diff options
Diffstat (limited to 'libview')
| -rw-r--r-- | libview/Makefile.am | 56 | ||||
| -rw-r--r-- | libview/ev-job-scheduler.c | 305 | ||||
| -rw-r--r-- | libview/ev-job-scheduler.h | 44 | ||||
| -rw-r--r-- | libview/ev-jobs.c | 1366 | ||||
| -rw-r--r-- | libview/ev-jobs.h | 420 | ||||
| -rw-r--r-- | libview/ev-page-cache.c | 714 | ||||
| -rw-r--r-- | libview/ev-page-cache.h | 85 | ||||
| -rw-r--r-- | libview/ev-pixbuf-cache.c | 1253 | ||||
| -rw-r--r-- | libview/ev-pixbuf-cache.h | 90 | ||||
| -rw-r--r-- | libview/ev-timeline.c | 450 | ||||
| -rw-r--r-- | libview/ev-timeline.h | 86 | ||||
| -rw-r--r-- | libview/ev-transition-animation.c | 682 | ||||
| -rw-r--r-- | libview/ev-transition-animation.h | 68 | ||||
| -rw-r--r-- | libview/ev-view-accessible.c | 563 | ||||
| -rw-r--r-- | libview/ev-view-accessible.h | 29 | ||||
| -rw-r--r-- | libview/ev-view-marshal.list | 1 | ||||
| -rw-r--r-- | libview/ev-view-private.h | 195 | ||||
| -rw-r--r-- | libview/ev-view.c | 5891 | ||||
| -rw-r--r-- | libview/ev-view.h | 145 |
19 files changed, 12443 insertions, 0 deletions
diff --git a/libview/Makefile.am b/libview/Makefile.am new file mode 100644 index 0000000..dfdb20e --- /dev/null +++ b/libview/Makefile.am @@ -0,0 +1,56 @@ +INCLUDES= \ + -DGNOMELOCALEDIR=\"$(datadir)/locale\" \ + -I$(top_srcdir)/libdocument \ + $(LIBVIEW_CFLAGS) \ + $(WARN_CFLAGS) \ + $(DISABLE_DEPRECATED) + +lib_LTLIBRARIES = libevview.la + +libevview_la_LDFLAGS = -export-dynamic +libevview_la_LIBADD = $(LIBVIEW_LIBS) + +NOINST_H_FILES = \ + ev-job-scheduler.h \ + ev-pixbuf-cache.h \ + ev-timeline.h \ + ev-transition-animation.h \ + ev-view-accessible.h \ + ev-view-marshal.h \ + ev-view-private.h + +INST_H_FILES = \ + ev-jobs.h \ + ev-page-cache.h \ + ev-view.h + +headerdir = $(prefix)/include/evince/@EV_API_VERSION@/ev-view +header_DATA = $(INST_H_FILES) + +libevview_la_SOURCES = \ + ev-jobs.c \ + ev-job-scheduler.c \ + ev-page-cache.c \ + ev-pixbuf-cache.c \ + ev-timeline.c \ + ev-transition-animation.c \ + ev-view.c \ + ev-view-accessible.c \ + ev-view-marshal.c \ + $(NOINST_H_FILES) \ + $(INST_H_FILES) + +BUILT_SOURCES = \ + ev-view-marshal.h \ + ev-view-marshal.c + +CLEANFILES = $(BUILT_SOURCES) + +ev-view-marshal.h: $(srcdir)/ev-view-marshal.list + $(GLIB_GENMARSHAL) --prefix=ev_view_marshal $(srcdir)/ev-view-marshal.list --header > $@ + +ev-view-marshal.c: $(srcdir)/ev-view-marshal.list + echo '#include "ev-view-marshal.h"' > ev-view-marshal.c + $(GLIB_GENMARSHAL) --prefix=ev_view_marshal $(srcdir)/ev-view-marshal.list --body >> $@ + +EXTRA_DIST = ev-view-marshal.list diff --git a/libview/ev-job-scheduler.c b/libview/ev-job-scheduler.c new file mode 100644 index 0000000..900714e --- /dev/null +++ b/libview/ev-job-scheduler.c @@ -0,0 +1,305 @@ +/* ev-job-scheduler.c + * this file is part of evince, a gnome document viewer + * + * Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org> + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#include "ev-debug.h" +#include "ev-job-scheduler.h" + +typedef struct _EvSchedulerJob { + EvJob *job; + EvJobPriority priority; + GSList *job_link; +} EvSchedulerJob; + +G_LOCK_DEFINE_STATIC(job_list); +static GSList *job_list = NULL; + +static gpointer ev_job_thread_proxy (gpointer data); +static void ev_scheduler_thread_job_cancelled (EvSchedulerJob *job, + GCancellable *cancellable); + +/* EvJobQueue */ +static GQueue queue_urgent = G_QUEUE_INIT; +static GQueue queue_high = G_QUEUE_INIT; +static GQueue queue_low = G_QUEUE_INIT; +static GQueue queue_none = G_QUEUE_INIT; + +static GCond *job_queue_cond = NULL; +static GMutex *job_queue_mutex = NULL; +static GQueue *job_queue[EV_JOB_N_PRIORITIES] = { + &queue_urgent, + &queue_high, + &queue_low, + &queue_none +}; + +static void +ev_job_queue_push (EvSchedulerJob *job, + EvJobPriority priority) +{ + ev_debug_message (DEBUG_JOBS, "%s priority %d", EV_GET_TYPE_NAME (job->job), priority); + + g_mutex_lock (job_queue_mutex); + + g_queue_push_tail (job_queue[priority], job); + g_cond_broadcast (job_queue_cond); + + g_mutex_unlock (job_queue_mutex); +} + +static EvSchedulerJob * +ev_job_queue_get_next_unlocked (void) +{ + gint i; + EvSchedulerJob *job = NULL; + + for (i = EV_JOB_PRIORITY_URGENT; i < EV_JOB_N_PRIORITIES; i++) { + job = (EvSchedulerJob *) g_queue_pop_head (job_queue[i]); + if (job) + break; + } + + ev_debug_message (DEBUG_JOBS, "%s", job ? EV_GET_TYPE_NAME (job->job) : "No jobs in queue"); + + return job; +} + +static gpointer +ev_job_scheduler_init (gpointer data) +{ + job_queue_cond = g_cond_new (); + job_queue_mutex = g_mutex_new (); + g_thread_create (ev_job_thread_proxy, NULL, FALSE, NULL); + + return NULL; +} + +static void +ev_scheduler_job_list_add (EvSchedulerJob *job) +{ + ev_debug_message (DEBUG_JOBS, "%s", EV_GET_TYPE_NAME (job->job)); + + G_LOCK (job_list); + + job_list = g_slist_prepend (job_list, job); + job->job_link = job_list; + + G_UNLOCK (job_list); +} + +static void +ev_scheduler_job_list_remove (EvSchedulerJob *job) +{ + ev_debug_message (DEBUG_JOBS, "%s", EV_GET_TYPE_NAME (job->job)); + + G_LOCK (job_list); + + job_list = g_slist_delete_link (job_list, job->job_link); + + G_UNLOCK (job_list); +} + +static void +ev_scheduler_job_free (EvSchedulerJob *job) +{ + if (!job) + return; + + g_object_unref (job->job); + g_free (job); +} + +static void +ev_scheduler_job_destroy (EvSchedulerJob *job) +{ + ev_debug_message (DEBUG_JOBS, "%s", EV_GET_TYPE_NAME (job->job)); + + if (job->job->run_mode == EV_JOB_RUN_MAIN_LOOP) { + g_signal_handlers_disconnect_by_func (job->job, + G_CALLBACK (ev_scheduler_job_destroy), + job); + } else { + g_signal_handlers_disconnect_by_func (job->job->cancellable, + G_CALLBACK (ev_scheduler_thread_job_cancelled), + job); + } + + ev_scheduler_job_list_remove (job); + ev_scheduler_job_free (job); +} + +static void +ev_scheduler_thread_job_cancelled (EvSchedulerJob *job, + GCancellable *cancellable) +{ + GList *list; + + ev_debug_message (DEBUG_JOBS, "%s", EV_GET_TYPE_NAME (job->job)); + + g_mutex_lock (job_queue_mutex); + + /* If the job is not still running, + * remove it from the job queue and job list. + * If the job is currently running, it will be + * destroyed as soon as it finishes. + */ + list = g_queue_find (job_queue[job->priority], job); + if (list) { + g_queue_delete_link (job_queue[job->priority], list); + g_mutex_unlock (job_queue_mutex); + ev_scheduler_job_destroy (job); + } else { + g_mutex_unlock (job_queue_mutex); + } +} + +static void +ev_job_thread (EvJob *job) +{ + gboolean result; + + ev_debug_message (DEBUG_JOBS, "%s", EV_GET_TYPE_NAME (job)); + + do { + if (g_cancellable_is_cancelled (job->cancellable)) + result = FALSE; + else + result = ev_job_run (job); + } while (result); +} + +static gboolean +ev_job_idle (EvJob *job) +{ + ev_debug_message (DEBUG_JOBS, "%s", EV_GET_TYPE_NAME (job)); + + if (g_cancellable_is_cancelled (job->cancellable)) + return FALSE; + + return ev_job_run (job); +} + +static gpointer +ev_job_thread_proxy (gpointer data) +{ + while (TRUE) { + EvSchedulerJob *job; + + g_mutex_lock (job_queue_mutex); + job = ev_job_queue_get_next_unlocked (); + if (!job) { + g_cond_wait (job_queue_cond, job_queue_mutex); + g_mutex_unlock (job_queue_mutex); + continue; + } + g_mutex_unlock (job_queue_mutex); + + ev_job_thread (job->job); + ev_scheduler_job_destroy (job); + } + + return NULL; +} + +void +ev_job_scheduler_push_job (EvJob *job, + EvJobPriority priority) +{ + static GOnce once_init = G_ONCE_INIT; + EvSchedulerJob *s_job; + + g_once (&once_init, ev_job_scheduler_init, NULL); + + ev_debug_message (DEBUG_JOBS, "%s pirority %d", EV_GET_TYPE_NAME (job), priority); + + s_job = g_new0 (EvSchedulerJob, 1); + s_job->job = g_object_ref (job); + s_job->priority = priority; + + ev_scheduler_job_list_add (s_job); + + switch (ev_job_get_run_mode (job)) { + case EV_JOB_RUN_THREAD: + g_signal_connect_swapped (job->cancellable, "cancelled", + G_CALLBACK (ev_scheduler_thread_job_cancelled), + s_job); + ev_job_queue_push (s_job, priority); + break; + case EV_JOB_RUN_MAIN_LOOP: + g_signal_connect_swapped (job, "finished", + G_CALLBACK (ev_scheduler_job_destroy), + s_job); + g_signal_connect_swapped (job, "cancelled", + G_CALLBACK (ev_scheduler_job_destroy), + s_job); + g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, + (GSourceFunc)ev_job_idle, + g_object_ref (job), + (GDestroyNotify)g_object_unref); + break; + default: + g_assert_not_reached (); + } +} + +void +ev_job_scheduler_update_job (EvJob *job, + EvJobPriority priority) +{ + GSList *l; + EvSchedulerJob *s_job = NULL; + gboolean need_resort = FALSE; + + /* Main loop jobs are scheduled inmediately */ + if (ev_job_get_run_mode (job) == EV_JOB_RUN_MAIN_LOOP) + return; + + ev_debug_message (DEBUG_JOBS, "%s pirority %d", EV_GET_TYPE_NAME (job), priority); + + G_LOCK (job_list); + + for (l = job_list; l; l = l->next) { + s_job = (EvSchedulerJob *)l->data; + + if (s_job->job == job) { + need_resort = (s_job->priority != priority); + break; + } + } + + G_UNLOCK (job_list); + + if (need_resort) { + GList *list; + + g_mutex_lock (job_queue_mutex); + + list = g_queue_find (job_queue[s_job->priority], s_job); + if (list) { + ev_debug_message (DEBUG_JOBS, "Moving job %s from pirority %d to %d", + EV_GET_TYPE_NAME (job), s_job->priority, priority); + g_queue_delete_link (job_queue[s_job->priority], list); + g_queue_push_tail (job_queue[priority], s_job); + g_cond_broadcast (job_queue_cond); + } + + g_mutex_unlock (job_queue_mutex); + } +} + diff --git a/libview/ev-job-scheduler.h b/libview/ev-job-scheduler.h new file mode 100644 index 0000000..66f9f80 --- /dev/null +++ b/libview/ev-job-scheduler.h @@ -0,0 +1,44 @@ +/* ev-job-scheduler.h + * this file is part of evince, a gnome document viewer + * + * Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org> + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef EV_JOB_SCHEDULER_H +#define EV_JOB_SCHEDULER_H + +#include <glib.h> +#include "ev-jobs.h" + +G_BEGIN_DECLS + +typedef enum { + EV_JOB_PRIORITY_URGENT, /* Rendering current page range */ + EV_JOB_PRIORITY_HIGH, /* Rendering current thumbnail range */ + EV_JOB_PRIORITY_LOW, /* Rendering pages not in current range */ + EV_JOB_PRIORITY_NONE, /* Any other job: load, save, print, ... */ + EV_JOB_N_PRIORITIES +} EvJobPriority; + +void ev_job_scheduler_push_job (EvJob *job, + EvJobPriority priority); +void ev_job_scheduler_update_job (EvJob *job, + EvJobPriority priority); + +G_END_DECLS + +#endif /* EV_JOB_SCHEDULER_H */ diff --git a/libview/ev-jobs.c b/libview/ev-jobs.c new file mode 100644 index 0000000..102cd90 --- /dev/null +++ b/libview/ev-jobs.c @@ -0,0 +1,1366 @@ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org> + * Copyright (C) 2005 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <config.h> + +#include "ev-jobs.h" +#include "ev-document-thumbnails.h" +#include "ev-document-links.h" +#include "ev-document-images.h" +#include "ev-document-forms.h" +#include "ev-file-exporter.h" +#include "ev-document-factory.h" +#include "ev-document-misc.h" +#include "ev-file-helpers.h" +#include "ev-document-fonts.h" +#include "ev-document-security.h" +#include "ev-document-find.h" +#include "ev-document-layers.h" +#include "ev-debug.h" + +#include <errno.h> +#include <glib/gstdio.h> +#include <glib/gi18n.h> +#include <unistd.h> + +static void ev_job_init (EvJob *job); +static void ev_job_class_init (EvJobClass *class); +static void ev_job_links_init (EvJobLinks *job); +static void ev_job_links_class_init (EvJobLinksClass *class); +static void ev_job_attachments_init (EvJobAttachments *job); +static void ev_job_attachments_class_init (EvJobAttachmentsClass *class); +static void ev_job_render_init (EvJobRender *job); +static void ev_job_render_class_init (EvJobRenderClass *class); +static void ev_job_thumbnail_init (EvJobThumbnail *job); +static void ev_job_thumbnail_class_init (EvJobThumbnailClass *class); +static void ev_job_load_init (EvJobLoad *job); +static void ev_job_load_class_init (EvJobLoadClass *class); +static void ev_job_save_init (EvJobSave *job); +static void ev_job_save_class_init (EvJobSaveClass *class); +static void ev_job_find_init (EvJobFind *job); +static void ev_job_find_class_init (EvJobFindClass *class); +static void ev_job_layers_init (EvJobLayers *job); +static void ev_job_layers_class_init (EvJobLayersClass *class); +static void ev_job_export_init (EvJobExport *job); +static void ev_job_export_class_init (EvJobExportClass *class); + +enum { + CANCELLED, + FINISHED, + LAST_SIGNAL +}; + +enum { + PAGE_READY, + RENDER_LAST_SIGNAL +}; + +enum { + FONTS_UPDATED, + FONTS_LAST_SIGNAL +}; + +enum { + FIND_UPDATED, + FIND_LAST_SIGNAL +}; + +static guint job_signals[LAST_SIGNAL] = { 0 }; +static guint job_render_signals[RENDER_LAST_SIGNAL] = { 0 }; +static guint job_fonts_signals[FONTS_LAST_SIGNAL] = { 0 }; +static guint job_find_signals[FIND_LAST_SIGNAL] = { 0 }; + +G_DEFINE_ABSTRACT_TYPE (EvJob, ev_job, G_TYPE_OBJECT) +G_DEFINE_TYPE (EvJobLinks, ev_job_links, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobAttachments, ev_job_attachments, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobRender, ev_job_render, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobThumbnail, ev_job_thumbnail, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobFonts, ev_job_fonts, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobLoad, ev_job_load, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobSave, ev_job_save, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobFind, ev_job_find, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobLayers, ev_job_layers, EV_TYPE_JOB) +G_DEFINE_TYPE (EvJobExport, ev_job_export, EV_TYPE_JOB) + +/* EvJob */ +static void +ev_job_init (EvJob *job) +{ + job->cancellable = g_cancellable_new (); +} + +static void +ev_job_dispose (GObject *object) +{ + EvJob *job; + + job = EV_JOB (object); + + if (job->document) { + g_object_unref (job->document); + job->document = NULL; + } + + if (job->cancellable) { + g_object_unref (job->cancellable); + job->cancellable = NULL; + } + + if (job->error) { + g_error_free (job->error); + job->error = NULL; + } + + (* G_OBJECT_CLASS (ev_job_parent_class)->dispose) (object); +} + +static void +ev_job_class_init (EvJobClass *class) +{ + GObjectClass *oclass; + + oclass = G_OBJECT_CLASS (class); + + oclass->dispose = ev_job_dispose; + + job_signals[CANCELLED] = + g_signal_new ("cancelled", + EV_TYPE_JOB, + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvJobClass, cancelled), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + job_signals [FINISHED] = + g_signal_new ("finished", + EV_TYPE_JOB, + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (EvJobClass, finished), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); +} + +static gboolean +emit_finished (EvJob *job) +{ + ev_debug_message (DEBUG_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + job->idle_finished_id = 0; + + if (job->cancelled) { + ev_debug_message (DEBUG_JOBS, "%s (%p) job was cancelled, do not emit finished", EV_GET_TYPE_NAME (job), job); + } else { + ev_profiler_stop (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + g_signal_emit (job, job_signals[FINISHED], 0); + } + + return FALSE; +} + +static void +ev_job_emit_finished (EvJob *job) +{ + ev_debug_message (DEBUG_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + if (g_cancellable_is_cancelled (job->cancellable)) { + ev_debug_message (DEBUG_JOBS, "%s (%p) job was cancelled, returning", EV_GET_TYPE_NAME (job), job); + return; + } + + job->finished = TRUE; + + if (job->run_mode == EV_JOB_RUN_THREAD) { + job->idle_finished_id = + g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, + (GSourceFunc)emit_finished, + g_object_ref (job), + (GDestroyNotify)g_object_unref); + } else { + ev_profiler_stop (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + g_signal_emit (job, job_signals[FINISHED], 0); + } +} + +gboolean +ev_job_run (EvJob *job) +{ + EvJobClass *class = EV_JOB_GET_CLASS (job); + + return class->run (job); +} + +void +ev_job_cancel (EvJob *job) +{ + if (job->cancelled || (job->finished && job->idle_finished_id == 0)) + return; + + ev_debug_message (DEBUG_JOBS, "job %s (%p) cancelled", EV_GET_TYPE_NAME (job), job); + ev_profiler_stop (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + /* This should never be called from a thread */ + job->cancelled = TRUE; + g_cancellable_cancel (job->cancellable); + g_signal_emit (job, job_signals[CANCELLED], 0); +} + +void +ev_job_failed (EvJob *job, + GQuark domain, + gint code, + const gchar *format, + ...) +{ + va_list args; + gchar *message; + + if (job->failed || job->finished) + return; + + ev_debug_message (DEBUG_JOBS, "job %s (%p) failed", EV_GET_TYPE_NAME (job), job); + + job->failed = TRUE; + + va_start (args, format); + message = g_strdup_vprintf (format, args); + va_end (args); + + job->error = g_error_new_literal (domain, code, message); + g_free (message); + + ev_job_emit_finished (job); +} + +void +ev_job_failed_from_error (EvJob *job, + GError *error) +{ + if (job->failed || job->finished) + return; + + ev_debug_message (DEBUG_JOBS, "job %s (%p) failed", EV_GET_TYPE_NAME (job), job); + + job->failed = TRUE; + job->error = g_error_copy (error); + + ev_job_emit_finished (job); +} + +void +ev_job_succeeded (EvJob *job) +{ + if (job->finished) + return; + + ev_debug_message (DEBUG_JOBS, "job %s (%p) succeeded", EV_GET_TYPE_NAME (job), job); + + job->failed = FALSE; + ev_job_emit_finished (job); +} + +gboolean +ev_job_is_finished (EvJob *job) +{ + return job->finished; +} + +gboolean +ev_job_is_failed (EvJob *job) +{ + return job->failed; +} + +EvJobRunMode +ev_job_get_run_mode (EvJob *job) +{ + return job->run_mode; +} + +void +ev_job_set_run_mode (EvJob *job, + EvJobRunMode run_mode) +{ + job->run_mode = run_mode; +} + +/* EvJobLinks */ +static void +ev_job_links_init (EvJobLinks *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; +} + +static void +ev_job_links_dispose (GObject *object) +{ + EvJobLinks *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = EV_JOB_LINKS (object); + + if (job->model) { + g_object_unref (job->model); + job->model = NULL; + } + + (* G_OBJECT_CLASS (ev_job_links_parent_class)->dispose) (object); +} + +static gboolean +ev_job_links_run (EvJob *job) +{ + EvJobLinks *job_links = EV_JOB_LINKS (job); + + ev_debug_message (DEBUG_JOBS, NULL); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + ev_document_doc_mutex_lock (); + job_links->model = ev_document_links_get_links_model (EV_DOCUMENT_LINKS (job->document)); + ev_document_doc_mutex_unlock (); + + ev_job_succeeded (job); + + return FALSE; +} + +static void +ev_job_links_class_init (EvJobLinksClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + oclass->dispose = ev_job_links_dispose; + job_class->run = ev_job_links_run; +} + +EvJob * +ev_job_links_new (EvDocument *document) +{ + EvJob *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = g_object_new (EV_TYPE_JOB_LINKS, NULL); + job->document = g_object_ref (document); + + return job; +} + +/* EvJobAttachments */ +static void +ev_job_attachments_init (EvJobAttachments *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; +} + +static void +ev_job_attachments_dispose (GObject *object) +{ + EvJobAttachments *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = EV_JOB_ATTACHMENTS (object); + + if (job->attachments) { + g_list_foreach (job->attachments, (GFunc)g_object_unref, NULL); + g_list_free (job->attachments); + job->attachments = NULL; + } + + (* G_OBJECT_CLASS (ev_job_attachments_parent_class)->dispose) (object); +} + +static gboolean +ev_job_attachments_run (EvJob *job) +{ + EvJobAttachments *job_attachments = EV_JOB_ATTACHMENTS (job); + + ev_debug_message (DEBUG_JOBS, NULL); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + ev_document_doc_mutex_lock (); + job_attachments->attachments = ev_document_get_attachments (job->document); + ev_document_doc_mutex_unlock (); + + ev_job_succeeded (job); + + return FALSE; +} + +static void +ev_job_attachments_class_init (EvJobAttachmentsClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + oclass->dispose = ev_job_attachments_dispose; + job_class->run = ev_job_attachments_run; +} + +EvJob * +ev_job_attachments_new (EvDocument *document) +{ + EvJob *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = g_object_new (EV_TYPE_JOB_ATTACHMENTS, NULL); + job->document = g_object_ref (document); + + return job; +} + +/* EvJobRender */ +static void +ev_job_render_init (EvJobRender *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; +} + +static void +ev_job_render_dispose (GObject *object) +{ + EvJobRender *job; + + job = EV_JOB_RENDER (object); + + if (job->ev_page) { + ev_debug_message (DEBUG_JOBS, "page: %d (%p)", job->ev_page->index, job); + g_object_unref (job->ev_page); + job->ev_page = NULL; + } + + if (job->surface) { + cairo_surface_destroy (job->surface); + job->surface = NULL; + } + + if (job->selection) { + cairo_surface_destroy (job->selection); + job->selection = NULL; + } + + if (job->selection_region) { + gdk_region_destroy (job->selection_region); + job->selection_region = NULL; + } + + (* G_OBJECT_CLASS (ev_job_render_parent_class)->dispose) (object); +} + +static gboolean +notify_page_ready (EvJobRender *job) +{ + ev_debug_message (DEBUG_JOBS, "%d (%p)", job->ev_page->index, job); + ev_profiler_stop (EV_PROFILE_JOBS, "Rendering page %d", job->ev_page->index); + + if (EV_JOB (job)->cancelled) { + ev_debug_message (DEBUG_JOBS, "%s (%p) job was cancelled, do not emit page_ready", EV_GET_TYPE_NAME (job), job); + } else { + g_signal_emit (job, job_render_signals[PAGE_READY], 0); + } + + return FALSE; +} + +static void +ev_job_render_page_ready (EvJobRender *job) +{ + ev_debug_message (DEBUG_JOBS, "%d (%p)", job->ev_page->index, job); + + job->page_ready = TRUE; + g_idle_add_full (G_PRIORITY_HIGH_IDLE, + (GSourceFunc)notify_page_ready, + g_object_ref (job), + (GDestroyNotify)g_object_unref); +} + +static gboolean +ev_job_render_run (EvJob *job) +{ + EvJobRender *job_render = EV_JOB_RENDER (job); + EvRenderContext *rc; + + ev_debug_message (DEBUG_JOBS, "page: %d (%p)", job_render->page, job); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + ev_document_doc_mutex_lock (); + + ev_profiler_start (EV_PROFILE_JOBS, "Rendering page %d", job_render->page); + + ev_document_fc_mutex_lock (); + + job_render->ev_page = ev_document_get_page (job->document, job_render->page); + rc = ev_render_context_new (job_render->ev_page, job_render->rotation, job_render->scale); + + job_render->surface = ev_document_render (job->document, rc); + /* If job was cancelled during the page rendering, + * we return now, so that the thread is finished ASAP + */ + if (g_cancellable_is_cancelled (job->cancellable)) { + ev_document_fc_mutex_unlock (); + ev_document_doc_mutex_unlock (); + g_object_unref (rc); + + return FALSE; + } + + if ((job_render->flags & EV_RENDER_INCLUDE_SELECTION) && EV_IS_SELECTION (job->document)) { + ev_selection_render_selection (EV_SELECTION (job->document), + rc, + &(job_render->selection), + &(job_render->selection_points), + NULL, + job_render->selection_style, + &(job_render->text), &(job_render->base)); + job_render->selection_region = + ev_selection_get_selection_region (EV_SELECTION (job->document), + rc, + job_render->selection_style, + &(job_render->selection_points)); + } + + ev_job_render_page_ready (job_render); + + ev_document_fc_mutex_unlock (); + + if ((job_render->flags & EV_RENDER_INCLUDE_TEXT) && EV_IS_SELECTION (job->document)) + job_render->text_mapping = + ev_selection_get_selection_map (EV_SELECTION (job->document), rc); + if ((job_render->flags & EV_RENDER_INCLUDE_LINKS) && EV_IS_DOCUMENT_LINKS (job->document)) + job_render->link_mapping = + ev_document_links_get_links (EV_DOCUMENT_LINKS (job->document), job_render->page); + if ((job_render->flags & EV_RENDER_INCLUDE_FORMS) && EV_IS_DOCUMENT_FORMS (job->document)) + job_render->form_field_mapping = + ev_document_forms_get_form_fields (EV_DOCUMENT_FORMS (job->document), + job_render->ev_page); + if ((job_render->flags & EV_RENDER_INCLUDE_IMAGES) && EV_IS_DOCUMENT_IMAGES (job->document)) + job_render->image_mapping = + ev_document_images_get_image_mapping (EV_DOCUMENT_IMAGES (job->document), + job_render->page); + g_object_unref (rc); + ev_document_doc_mutex_unlock (); + + ev_job_succeeded (job); + + return FALSE; +} + +static void +ev_job_render_class_init (EvJobRenderClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + job_render_signals [PAGE_READY] = + g_signal_new ("page-ready", + EV_TYPE_JOB_RENDER, + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvJobRenderClass, page_ready), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + oclass->dispose = ev_job_render_dispose; + job_class->run = ev_job_render_run; +} + +EvJob * +ev_job_render_new (EvDocument *document, + gint page, + gint rotation, + gdouble scale, + gint width, + gint height, + EvRenderFlags flags) +{ + EvJobRender *job; + + ev_debug_message (DEBUG_JOBS, "page: %d", page); + + job = g_object_new (EV_TYPE_JOB_RENDER, NULL); + + EV_JOB (job)->document = g_object_ref (document); + job->page = page; + job->rotation = rotation; + job->scale = scale; + job->target_width = width; + job->target_height = height; + job->flags = flags; + + return EV_JOB (job); +} + +void +ev_job_render_set_selection_info (EvJobRender *job, + EvRectangle *selection_points, + EvSelectionStyle selection_style, + GdkColor *text, + GdkColor *base) +{ + job->flags |= EV_RENDER_INCLUDE_SELECTION; + + job->selection_points = *selection_points; + job->selection_style = selection_style; + job->text = *text; + job->base = *base; +} + +/* EvJobThumbnail */ +static void +ev_job_thumbnail_init (EvJobThumbnail *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; +} + +static void +ev_job_thumbnail_dispose (GObject *object) +{ + EvJobThumbnail *job; + + job = EV_JOB_THUMBNAIL (object); + + ev_debug_message (DEBUG_JOBS, "%d (%p)", job->page, job); + + if (job->thumbnail) { + g_object_unref (job->thumbnail); + job->thumbnail = NULL; + } + + (* G_OBJECT_CLASS (ev_job_thumbnail_parent_class)->dispose) (object); +} + +static gboolean +ev_job_thumbnail_run (EvJob *job) +{ + EvJobThumbnail *job_thumb = EV_JOB_THUMBNAIL (job); + EvRenderContext *rc; + EvPage *page; + + ev_debug_message (DEBUG_JOBS, "%d (%p)", job_thumb->page, job); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + ev_document_doc_mutex_lock (); + + page = ev_document_get_page (job->document, job_thumb->page); + rc = ev_render_context_new (page, job_thumb->rotation, job_thumb->scale); + g_object_unref (page); + + job_thumb->thumbnail = ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (job->document), + rc, TRUE); + g_object_unref (rc); + ev_document_doc_mutex_unlock (); + + ev_job_succeeded (job); + + return FALSE; +} + +static void +ev_job_thumbnail_class_init (EvJobThumbnailClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + oclass->dispose = ev_job_thumbnail_dispose; + job_class->run = ev_job_thumbnail_run; +} + +EvJob * +ev_job_thumbnail_new (EvDocument *document, + gint page, + gint rotation, + gdouble scale) +{ + EvJobThumbnail *job; + + ev_debug_message (DEBUG_JOBS, "%d", page); + + job = g_object_new (EV_TYPE_JOB_THUMBNAIL, NULL); + + EV_JOB (job)->document = g_object_ref (document); + job->page = page; + job->rotation = rotation; + job->scale = scale; + + return EV_JOB (job); +} + +/* EvJobFonts */ +static void +ev_job_fonts_init (EvJobFonts *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_MAIN_LOOP; +} + +static gboolean +ev_job_fonts_run (EvJob *job) +{ + EvJobFonts *job_fonts = EV_JOB_FONTS (job); + EvDocumentFonts *fonts = EV_DOCUMENT_FONTS (job->document); + + ev_debug_message (DEBUG_JOBS, NULL); + + /* Do not block the main loop */ + if (!ev_document_doc_mutex_trylock ()) + return TRUE; + + if (!ev_document_fc_mutex_trylock ()) + return TRUE; + +#ifdef EV_ENABLE_DEBUG + /* We use the #ifdef in this case because of the if */ + if (ev_document_fonts_get_progress (fonts) == 0) + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); +#endif + + job_fonts->scan_completed = !ev_document_fonts_scan (fonts, 20); + g_signal_emit (job_fonts, job_fonts_signals[FONTS_UPDATED], 0, + ev_document_fonts_get_progress (fonts)); + + ev_document_fc_mutex_unlock (); + ev_document_doc_mutex_unlock (); + + if (job_fonts->scan_completed) + ev_job_succeeded (job); + + return !job_fonts->scan_completed; +} + +static void +ev_job_fonts_class_init (EvJobFontsClass *class) +{ + EvJobClass *job_class = EV_JOB_CLASS (class); + + job_class->run = ev_job_fonts_run; + + job_fonts_signals[FONTS_UPDATED] = + g_signal_new ("updated", + EV_TYPE_JOB_FONTS, + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvJobFontsClass, updated), + NULL, NULL, + g_cclosure_marshal_VOID__DOUBLE, + G_TYPE_NONE, + 1, G_TYPE_DOUBLE); +} + +EvJob * +ev_job_fonts_new (EvDocument *document) +{ + EvJobFonts *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = g_object_new (EV_TYPE_JOB_FONTS, NULL); + + EV_JOB (job)->document = g_object_ref (document); + + return EV_JOB (job); +} + +/* EvJobLoad */ +static void +ev_job_load_init (EvJobLoad *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; +} + +static void +ev_job_load_dispose (GObject *object) +{ + EvJobLoad *job = EV_JOB_LOAD (object); + + ev_debug_message (DEBUG_JOBS, "%s", job->uri); + + if (job->uri) { + g_free (job->uri); + job->uri = NULL; + } + + if (job->password) { + g_free (job->password); + job->password = NULL; + } + + (* G_OBJECT_CLASS (ev_job_load_parent_class)->dispose) (object); +} + +static gboolean +ev_job_load_run (EvJob *job) +{ + EvJobLoad *job_load = EV_JOB_LOAD (job); + GError *error = NULL; + + ev_debug_message (DEBUG_JOBS, "%s", job_load->uri); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + ev_document_fc_mutex_lock (); + + /* This job may already have a document even if the job didn't complete + because, e.g., a password is required - if so, just reload rather than + creating a new instance */ + if (job->document) { + if (job_load->password) { + ev_document_security_set_password (EV_DOCUMENT_SECURITY (job->document), + job_load->password); + } + + job->failed = FALSE; + job->finished = FALSE; + g_clear_error (&job->error); + + ev_document_load (job->document, + job_load->uri, + &error); + } else { + job->document = ev_document_factory_get_document (job_load->uri, + &error); + } + + ev_document_fc_mutex_unlock (); + + if (error) { + ev_job_failed_from_error (job, error); + g_error_free (error); + } else { + ev_job_succeeded (job); + } + + return FALSE; +} + +static void +ev_job_load_class_init (EvJobLoadClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + oclass->dispose = ev_job_load_dispose; + job_class->run = ev_job_load_run; +} + +EvJob * +ev_job_load_new (const gchar *uri) +{ + EvJobLoad *job; + + ev_debug_message (DEBUG_JOBS, "%s", uri); + + job = g_object_new (EV_TYPE_JOB_LOAD, NULL); + job->uri = g_strdup (uri); + + return EV_JOB (job); +} + +void +ev_job_load_set_uri (EvJobLoad *job, const gchar *uri) +{ + ev_debug_message (DEBUG_JOBS, "%s", uri); + + if (job->uri) + g_free (job->uri); + job->uri = g_strdup (uri); +} + +void +ev_job_load_set_password (EvJobLoad *job, const gchar *password) +{ + ev_debug_message (DEBUG_JOBS, NULL); + + if (job->password) + g_free (job->password); + job->password = password ? g_strdup (password) : NULL; +} + +/* EvJobSave */ +static void +ev_job_save_init (EvJobSave *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; +} + +static void +ev_job_save_dispose (GObject *object) +{ + EvJobSave *job = EV_JOB_SAVE (object); + + ev_debug_message (DEBUG_JOBS, "%s", job->uri); + + if (job->uri) { + g_free (job->uri); + job->uri = NULL; + } + + if (job->document_uri) { + g_free (job->document_uri); + job->document_uri = NULL; + } + + (* G_OBJECT_CLASS (ev_job_save_parent_class)->dispose) (object); +} + +static gboolean +ev_job_save_run (EvJob *job) +{ + EvJobSave *job_save = EV_JOB_SAVE (job); + gint fd; + gchar *filename; + gchar *tmp_filename; + gchar *local_uri; + GError *error = NULL; + + ev_debug_message (DEBUG_JOBS, "uri: %s, document_uri: %s", job_save->uri, job_save->document_uri); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + filename = ev_tmp_filename ("saveacopy"); + tmp_filename = g_strdup_printf ("%s.XXXXXX", filename); + g_free (filename); + + fd = g_mkstemp (tmp_filename); + if (fd == -1) { + gchar *display_name; + gint save_errno = errno; + + display_name = g_filename_display_name (tmp_filename); + ev_job_failed (job, + G_FILE_ERROR, + g_file_error_from_errno (save_errno), + _("Failed to create file “%s”: %s"), + display_name, g_strerror (save_errno)); + g_free (display_name); + g_free (tmp_filename); + + return FALSE; + } + + ev_document_doc_mutex_lock (); + + /* Save document to temp filename */ + local_uri = g_filename_to_uri (tmp_filename, NULL, NULL); + ev_document_save (job->document, local_uri, &error); + close (fd); + + ev_document_doc_mutex_unlock (); + + if (error) { + g_free (local_uri); + ev_job_failed_from_error (job, error); + g_error_free (error); + + return FALSE; + } + + /* If original document was compressed, + * compress it again before saving + */ + if (g_object_get_data (G_OBJECT (job->document), "uri-uncompressed")) { + EvCompressionType ctype = EV_COMPRESSION_NONE; + const gchar *ext; + gchar *uri_comp; + + ext = g_strrstr (job_save->document_uri, ".gz"); + if (ext && g_ascii_strcasecmp (ext, ".gz") == 0) + ctype = EV_COMPRESSION_GZIP; + + ext = g_strrstr (job_save->document_uri, ".bz2"); + if (ext && g_ascii_strcasecmp (ext, ".bz2") == 0) + ctype = EV_COMPRESSION_BZIP2; + + uri_comp = ev_file_compress (local_uri, ctype, &error); + g_free (local_uri); + ev_tmp_filename_unlink (tmp_filename); + + if (!uri_comp || error) { + local_uri = NULL; + } else { + local_uri = uri_comp; + } + } + + g_free (tmp_filename); + + if (error) { + g_free (local_uri); + ev_job_failed_from_error (job, error); + g_error_free (error); + + return FALSE; + } + + if (!local_uri) + return FALSE; + + ev_xfer_uri_simple (local_uri, job_save->uri, &error); + ev_tmp_uri_unlink (local_uri); + + if (error) { + ev_job_failed_from_error (job, error); + g_error_free (error); + } else { + ev_job_succeeded (job); + } + + return FALSE; +} + +static void +ev_job_save_class_init (EvJobSaveClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + oclass->dispose = ev_job_save_dispose; + job_class->run = ev_job_save_run; +} + +EvJob * +ev_job_save_new (EvDocument *document, + const gchar *uri, + const gchar *document_uri) +{ + EvJobSave *job; + + ev_debug_message (DEBUG_JOBS, "uri: %s, document_uri: %s", uri, document_uri); + + job = g_object_new (EV_TYPE_JOB_SAVE, NULL); + + EV_JOB (job)->document = g_object_ref (document); + job->uri = g_strdup (uri); + job->document_uri = g_strdup (document_uri); + + return EV_JOB (job); +} + +/* EvJobFind */ +static void +ev_job_find_init (EvJobFind *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_MAIN_LOOP; +} + +static void +ev_job_find_dispose (GObject *object) +{ + EvJobFind *job = EV_JOB_FIND (object); + + ev_debug_message (DEBUG_JOBS, NULL); + + if (job->text) { + g_free (job->text); + job->text = NULL; + } + + if (job->pages) { + gint i; + + for (i = 0; i < job->n_pages; i++) { + g_list_foreach (job->pages[i], (GFunc)g_free, NULL); + g_list_free (job->pages[i]); + } + + g_free (job->pages); + job->pages = NULL; + } + + (* G_OBJECT_CLASS (ev_job_find_parent_class)->dispose) (object); +} + +static gboolean +ev_job_find_run (EvJob *job) +{ + EvJobFind *job_find = EV_JOB_FIND (job); + EvDocumentFind *find = EV_DOCUMENT_FIND (job->document); + EvPage *ev_page; + GList *matches; + + ev_debug_message (DEBUG_JOBS, NULL); + + /* Do not block the main loop */ + if (!ev_document_doc_mutex_trylock ()) + return TRUE; + +#ifdef EV_ENABLE_DEBUG + /* We use the #ifdef in this case because of the if */ + if (job_find->current_page == job_find->start_page) + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); +#endif + + ev_page = ev_document_get_page (job->document, job_find->current_page); + matches = ev_document_find_find_text (find, ev_page, job_find->text, + job_find->case_sensitive); + g_object_unref (ev_page); + + ev_document_doc_mutex_unlock (); + + if (!job_find->has_results) + job_find->has_results = (matches != NULL); + + job_find->pages[job_find->current_page] = matches; + g_signal_emit (job_find, job_find_signals[FIND_UPDATED], 0, job_find->current_page); + + job_find->current_page = (job_find->current_page + 1) % job_find->n_pages; + if (job_find->current_page == job_find->start_page) { + ev_job_succeeded (job); + + return FALSE; + } + + return TRUE; +} + +static void +ev_job_find_class_init (EvJobFindClass *class) +{ + EvJobClass *job_class = EV_JOB_CLASS (class); + GObjectClass *gobject_class = G_OBJECT_CLASS (class); + + job_class->run = ev_job_find_run; + gobject_class->dispose = ev_job_find_dispose; + + job_find_signals[FIND_UPDATED] = + g_signal_new ("updated", + EV_TYPE_JOB_FIND, + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvJobFindClass, updated), + NULL, NULL, + g_cclosure_marshal_VOID__INT, + G_TYPE_NONE, + 1, G_TYPE_INT); +} + +EvJob * +ev_job_find_new (EvDocument *document, + gint start_page, + gint n_pages, + const gchar *text, + gboolean case_sensitive) +{ + EvJobFind *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = g_object_new (EV_TYPE_JOB_FIND, NULL); + + EV_JOB (job)->document = g_object_ref (document); + job->start_page = start_page; + job->current_page = start_page; + job->n_pages = n_pages; + job->pages = g_new0 (GList *, n_pages); + job->text = g_strdup (text); + job->case_sensitive = case_sensitive; + job->has_results = FALSE; + + return EV_JOB (job); +} + +gint +ev_job_find_get_n_results (EvJobFind *job, + gint page) +{ + return g_list_length (job->pages[page]); +} + +gdouble +ev_job_find_get_progress (EvJobFind *job) +{ + gint pages_done; + + if (ev_job_is_finished (EV_JOB (job))) + return 1.0; + + if (job->current_page > job->start_page) { + pages_done = job->current_page - job->start_page + 1; + } else if (job->current_page == job->start_page) { + pages_done = job->n_pages; + } else { + pages_done = job->n_pages - job->start_page + job->current_page; + } + + return pages_done / (gdouble) job->n_pages; +} + +gboolean +ev_job_find_has_results (EvJobFind *job) +{ + return job->has_results; +} + +GList ** +ev_job_find_get_results (EvJobFind *job) +{ + return job->pages; +} + +/* EvJobLayers */ +static void +ev_job_layers_init (EvJobLayers *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; +} + +static void +ev_job_layers_dispose (GObject *object) +{ + EvJobLayers *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = EV_JOB_LAYERS (object); + + if (job->model) { + g_object_unref (job->model); + job->model = NULL; + } + + (* G_OBJECT_CLASS (ev_job_layers_parent_class)->dispose) (object); +} + +static gboolean +ev_job_layers_run (EvJob *job) +{ + EvJobLayers *job_layers = EV_JOB_LAYERS (job); + + ev_debug_message (DEBUG_JOBS, NULL); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + ev_document_doc_mutex_lock (); + job_layers->model = ev_document_layers_get_layers (EV_DOCUMENT_LAYERS (job->document)); + ev_document_doc_mutex_unlock (); + + ev_job_succeeded (job); + + return FALSE; +} + +static void +ev_job_layers_class_init (EvJobLayersClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + oclass->dispose = ev_job_layers_dispose; + job_class->run = ev_job_layers_run; +} + +EvJob * +ev_job_layers_new (EvDocument *document) +{ + EvJob *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = g_object_new (EV_TYPE_JOB_LAYERS, NULL); + job->document = g_object_ref (document); + + return job; +} + +/* EvJobExport */ +static void +ev_job_export_init (EvJobExport *job) +{ + EV_JOB (job)->run_mode = EV_JOB_RUN_THREAD; + job->page = -1; +} + +static void +ev_job_export_dispose (GObject *object) +{ + EvJobExport *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = EV_JOB_EXPORT (object); + + if (job->rc) { + g_object_unref (job->rc); + job->rc = NULL; + } + + (* G_OBJECT_CLASS (ev_job_export_parent_class)->dispose) (object); +} + +static gboolean +ev_job_export_run (EvJob *job) +{ + EvJobExport *job_export = EV_JOB_EXPORT (job); + EvPage *ev_page; + + g_assert (job_export->page != -1); + + ev_debug_message (DEBUG_JOBS, NULL); + ev_profiler_start (EV_PROFILE_JOBS, "%s (%p)", EV_GET_TYPE_NAME (job), job); + + ev_document_doc_mutex_lock (); + + ev_page = ev_document_get_page (job->document, job_export->page); + if (job_export->rc) { + job->failed = FALSE; + job->finished = FALSE; + g_clear_error (&job->error); + + ev_render_context_set_page (job_export->rc, ev_page); + } else { + job_export->rc = ev_render_context_new (ev_page, 0, 1.0); + } + g_object_unref (ev_page); + + ev_file_exporter_do_page (EV_FILE_EXPORTER (job->document), job_export->rc); + + ev_document_doc_mutex_unlock (); + + ev_job_succeeded (job); + + return FALSE; +} + +static void +ev_job_export_class_init (EvJobExportClass *class) +{ + GObjectClass *oclass = G_OBJECT_CLASS (class); + EvJobClass *job_class = EV_JOB_CLASS (class); + + oclass->dispose = ev_job_export_dispose; + job_class->run = ev_job_export_run; +} + +EvJob * +ev_job_export_new (EvDocument *document) +{ + EvJob *job; + + ev_debug_message (DEBUG_JOBS, NULL); + + job = g_object_new (EV_TYPE_JOB_EXPORT, NULL); + job->document = g_object_ref (document); + + return job; +} + +void +ev_job_export_set_page (EvJobExport *job, + gint page) +{ + job->page = page; +} diff --git a/libview/ev-jobs.h b/libview/ev-jobs.h new file mode 100644 index 0000000..5915a28 --- /dev/null +++ b/libview/ev-jobs.h @@ -0,0 +1,420 @@ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org> + * Copyright (C) 2005 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef __EV_JOBS_H__ +#define __EV_JOBS_H__ + +#include <gio/gio.h> +#include <gtk/gtk.h> + +#include "ev-document.h" +#include "ev-selection.h" +#include "ev-render-context.h" + +G_BEGIN_DECLS + +typedef struct _EvJob EvJob; +typedef struct _EvJobClass EvJobClass; + +typedef struct _EvJobRender EvJobRender; +typedef struct _EvJobRenderClass EvJobRenderClass; + +typedef struct _EvJobThumbnail EvJobThumbnail; +typedef struct _EvJobThumbnailClass EvJobThumbnailClass; + +typedef struct _EvJobLinks EvJobLinks; +typedef struct _EvJobLinksClass EvJobLinksClass; + +typedef struct _EvJobAttachments EvJobAttachments; +typedef struct _EvJobAttachmentsClass EvJobAttachmentsClass; + +typedef struct _EvJobFonts EvJobFonts; +typedef struct _EvJobFontsClass EvJobFontsClass; + +typedef struct _EvJobLoad EvJobLoad; +typedef struct _EvJobLoadClass EvJobLoadClass; + +typedef struct _EvJobSave EvJobSave; +typedef struct _EvJobSaveClass EvJobSaveClass; + +typedef struct _EvJobFind EvJobFind; +typedef struct _EvJobFindClass EvJobFindClass; + +typedef struct _EvJobLayers EvJobLayers; +typedef struct _EvJobLayersClass EvJobLayersClass; + +typedef struct _EvJobExport EvJobExport; +typedef struct _EvJobExportClass EvJobExportClass; + +#define EV_TYPE_JOB (ev_job_get_type()) +#define EV_JOB(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB, EvJob)) +#define EV_JOB_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB, EvJobClass)) +#define EV_IS_JOB(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB)) +#define EV_JOB_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS((object), EV_TYPE_JOB, EvJobClass)) + +#define EV_TYPE_JOB_LINKS (ev_job_links_get_type()) +#define EV_JOB_LINKS(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_LINKS, EvJobLinks)) +#define EV_JOB_LINKS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_LINKS, EvJobLinksClass)) +#define EV_IS_JOB_LINKS(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_LINKS)) + +#define EV_TYPE_JOB_ATTACHMENTS (ev_job_attachments_get_type()) +#define EV_JOB_ATTACHMENTS(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_ATTACHMENTS, EvJobAttachments)) +#define EV_JOB_ATTACHMENTS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_ATTACHMENTS, EvJobAttachmentsClass)) +#define EV_IS_JOB_ATTACHMENTS(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_ATTACHMENTS)) + +#define EV_TYPE_JOB_RENDER (ev_job_render_get_type()) +#define EV_JOB_RENDER(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_RENDER, EvJobRender)) +#define EV_JOB_RENDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_RENDER, EvJobRenderClass)) +#define EV_IS_JOB_RENDER(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_RENDER)) + +#define EV_TYPE_JOB_THUMBNAIL (ev_job_thumbnail_get_type()) +#define EV_JOB_THUMBNAIL(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_THUMBNAIL, EvJobThumbnail)) +#define EV_JOB_THUMBNAIL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_THUMBNAIL, EvJobThumbnailClass)) +#define EV_IS_JOB_THUMBNAIL(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_THUMBNAIL)) + +#define EV_TYPE_JOB_FONTS (ev_job_fonts_get_type()) +#define EV_JOB_FONTS(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_FONTS, EvJobFonts)) +#define EV_JOB_FONTS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_FONTS, EvJobFontsClass)) +#define EV_IS_JOB_FONTS(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_FONTS)) + +#define EV_TYPE_JOB_LOAD (ev_job_load_get_type()) +#define EV_JOB_LOAD(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_LOAD, EvJobLoad)) +#define EV_JOB_LOAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_LOAD, EvJobLoadClass)) +#define EV_IS_JOB_LOAD(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_LOAD)) + +#define EV_TYPE_JOB_SAVE (ev_job_save_get_type()) +#define EV_JOB_SAVE(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_SAVE, EvJobSave)) +#define EV_JOB_SAVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_SAVE, EvJobSaveClass)) +#define EV_IS_JOB_SAVE(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_SAVE)) + +#define EV_TYPE_JOB_FIND (ev_job_find_get_type()) +#define EV_JOB_FIND(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_FIND, EvJobFind)) +#define EV_JOB_FIND_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_FIND, EvJobFindClass)) +#define EV_IS_JOB_FIND(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_FIND)) + +#define EV_TYPE_JOB_LAYERS (ev_job_layers_get_type()) +#define EV_JOB_LAYERS(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_LAYERS, EvJobLayers)) +#define EV_JOB_LAYERS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_LAYERS, EvJobLayersClass)) +#define EV_IS_JOB_LAYERS(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_LAYERS)) + +#define EV_TYPE_JOB_EXPORT (ev_job_export_get_type()) +#define EV_JOB_EXPORT(object) (G_TYPE_CHECK_INSTANCE_CAST((object), EV_TYPE_JOB_EXPORT, EvJobExport)) +#define EV_JOB_EXPORT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), EV_TYPE_JOB_EXPORT, EvJobExportClass)) +#define EV_IS_JOB_EXPORT(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), EV_TYPE_JOB_EXPORT)) + +typedef enum { + EV_JOB_RUN_THREAD, + EV_JOB_RUN_MAIN_LOOP +} EvJobRunMode; + +struct _EvJob +{ + GObject parent; + + EvDocument *document; + + EvJobRunMode run_mode; + + guint cancelled : 1; + guint finished : 1; + guint failed : 1; + + GError *error; + GCancellable *cancellable; + + guint idle_finished_id; + guint idle_cancelled_id; +}; + +struct _EvJobClass +{ + GObjectClass parent_class; + + gboolean (*run) (EvJob *job); + + /* Signals */ + void (* cancelled) (EvJob *job); + void (* finished) (EvJob *job); +}; + +struct _EvJobLinks +{ + EvJob parent; + + GtkTreeModel *model; +}; + +struct _EvJobLinksClass +{ + EvJobClass parent_class; +}; + +struct _EvJobAttachments +{ + EvJob parent; + + GList *attachments; +}; + +struct _EvJobAttachmentsClass +{ + EvJobClass parent_class; +}; + +typedef enum { + EV_RENDER_INCLUDE_NONE = 0, + EV_RENDER_INCLUDE_LINKS = 1 << 0, + EV_RENDER_INCLUDE_TEXT = 1 << 1, + EV_RENDER_INCLUDE_SELECTION = 1 << 2, + EV_RENDER_INCLUDE_IMAGES = 1 << 3, + EV_RENDER_INCLUDE_FORMS = 1 << 4, + EV_RENDER_INCLUDE_ALL = (1 << 5) - 1 +} EvRenderFlags; + +struct _EvJobRender +{ + EvJob parent; + + gint page; + gint rotation; + gdouble scale; + + EvPage *ev_page; + gboolean page_ready; + gint target_width; + gint target_height; + cairo_surface_t *surface; + + GList *link_mapping; + GdkRegion *text_mapping; + GList *image_mapping; + GList *form_field_mapping; + + cairo_surface_t *selection; + GdkRegion *selection_region; + EvRectangle selection_points; + EvSelectionStyle selection_style; + GdkColor base; + GdkColor text; + + EvRenderFlags flags; +}; + +struct _EvJobRenderClass +{ + EvJobClass parent_class; + + void (* page_ready) (EvJobRender *job); +}; + +struct _EvJobThumbnail +{ + EvJob parent; + + gint page; + gint rotation; + gdouble scale; + + GdkPixbuf *thumbnail; +}; + +struct _EvJobThumbnailClass +{ + EvJobClass parent_class; +}; + +struct _EvJobFonts +{ + EvJob parent; + gboolean scan_completed; +}; + +struct _EvJobFontsClass +{ + EvJobClass parent_class; + + /* Signals */ + void (* updated) (EvJobFonts *job, + gdouble progress); +}; + +struct _EvJobLoad +{ + EvJob parent; + + gchar *uri; + gchar *password; +}; + +struct _EvJobLoadClass +{ + EvJobClass parent_class; +}; + +struct _EvJobSave +{ + EvJob parent; + + gchar *uri; + gchar *document_uri; +}; + +struct _EvJobSaveClass +{ + EvJobClass parent_class; +}; + +struct _EvJobFind +{ + EvJob parent; + + gint start_page; + gint current_page; + gint n_pages; + GList **pages; + gchar *text; + gboolean case_sensitive; + gboolean has_results; +}; + +struct _EvJobFindClass +{ + EvJobClass parent_class; + + /* Signals */ + void (* updated) (EvJobFind *job, + gint page); +}; + +struct _EvJobLayers +{ + EvJob parent; + + GtkTreeModel *model; +}; + +struct _EvJobLayersClass +{ + EvJobClass parent_class; +}; + +struct _EvJobExport +{ + EvJob parent; + + gint page; + EvRenderContext *rc; +}; + +struct _EvJobExportClass +{ + EvJobClass parent_class; +}; + +/* Base job class */ +GType ev_job_get_type (void) G_GNUC_CONST; +gboolean ev_job_run (EvJob *job); +void ev_job_cancel (EvJob *job); +void ev_job_failed (EvJob *job, + GQuark domain, + gint code, + const gchar *format, + ...); +void ev_job_failed_from_error (EvJob *job, + GError *error); +void ev_job_succeeded (EvJob *job); +gboolean ev_job_is_cancelled (EvJob *job); +gboolean ev_job_is_finished (EvJob *job); +gboolean ev_job_is_failed (EvJob *job); +EvJobRunMode ev_job_get_run_mode (EvJob *job); +void ev_job_set_run_mode (EvJob *job, + EvJobRunMode run_mode); + +/* EvJobLinks */ +GType ev_job_links_get_type (void) G_GNUC_CONST; +EvJob *ev_job_links_new (EvDocument *document); + +/* EvJobAttachments */ +GType ev_job_attachments_get_type (void) G_GNUC_CONST; +EvJob *ev_job_attachments_new (EvDocument *document); + +/* EvJobRender */ +GType ev_job_render_get_type (void) G_GNUC_CONST; +EvJob *ev_job_render_new (EvDocument *document, + gint page, + gint rotation, + gdouble scale, + gint width, + gint height, + EvRenderFlags flags); +void ev_job_render_set_selection_info (EvJobRender *job, + EvRectangle *selection_points, + EvSelectionStyle selection_style, + GdkColor *text, + GdkColor *base); +/* EvJobThumbnail */ +GType ev_job_thumbnail_get_type (void) G_GNUC_CONST; +EvJob *ev_job_thumbnail_new (EvDocument *document, + gint page, + gint rotation, + gdouble scale); +/* EvJobFonts */ +GType ev_job_fonts_get_type (void) G_GNUC_CONST; +EvJob *ev_job_fonts_new (EvDocument *document); + +/* EvJobLoad */ +GType ev_job_load_get_type (void) G_GNUC_CONST; +EvJob *ev_job_load_new (const gchar *uri); +void ev_job_load_set_uri (EvJobLoad *load, + const gchar *uri); +void ev_job_load_set_password (EvJobLoad *job, + const gchar *password); + +/* EvJobSave */ +GType ev_job_save_get_type (void) G_GNUC_CONST; +EvJob *ev_job_save_new (EvDocument *document, + const gchar *uri, + const gchar *document_uri); +/* EvJobFind */ +GType ev_job_find_get_type (void) G_GNUC_CONST; +EvJob *ev_job_find_new (EvDocument *document, + gint start_page, + gint n_pages, + const gchar *text, + gboolean case_sensitive); +gint ev_job_find_get_n_results (EvJobFind *job, + gint pages); +gdouble ev_job_find_get_progress (EvJobFind *job); +gboolean ev_job_find_has_results (EvJobFind *job); +GList **ev_job_find_get_results (EvJobFind *job); + +/* EvJobLayers */ +GType ev_job_layers_get_type (void) G_GNUC_CONST; +EvJob *ev_job_layers_new (EvDocument *document); + +/* EvJobExport */ +GType ev_job_export_get_type (void) G_GNUC_CONST; +EvJob *ev_job_export_new (EvDocument *document); +void ev_job_export_set_page (EvJobExport *job, + gint page); + +G_END_DECLS + +#endif /* __EV_JOBS_H__ */ diff --git a/libview/ev-page-cache.c b/libview/ev-page-cache.c new file mode 100644 index 0000000..a8639ef --- /dev/null +++ b/libview/ev-page-cache.c @@ -0,0 +1,714 @@ +#include <config.h> +#include "ev-page-cache.h" +#include "ev-document-thumbnails.h" +#include "ev-page.h" +#include <stdlib.h> +#include <string.h> + +#define THUMBNAIL_WIDTH 100 + +typedef struct _EvPageCacheInfo +{ + double width; + double height; +} EvPageCacheInfo; + +typedef struct _EvPageThumbsInfo +{ + gint width; + gint height; +} EvPageThumbsInfo; + +struct _EvPageCache +{ + GObject parent; + + gint current_page; + int n_pages; + char *title; + char **page_labels; + + gint max_label_chars; + gboolean has_labels; + gboolean uniform; + gboolean dual_even_left; + + double uniform_width; + double uniform_height; + + double max_width; + double max_height; + + double* height_to_page; + double* dual_height_to_page; + + int rotation; + + EvPageCacheInfo *size_cache; + EvDocumentInfo *page_info; + + /* Thumbnail dimensions */ + gboolean thumbs_uniform; + gint thumbs_uniform_width; + gint thumbs_uniform_height; + gint thumbs_max_width; + gint thumbs_max_height; + EvPageThumbsInfo *thumbs_size_cache; +}; + +struct _EvPageCacheClass +{ + GObjectClass parent_class; + + void (* page_changed) (EvPageCache *page_cache, gint page); + void (* history_changed) (EvPageCache *page_cache, gint page); +}; + +enum +{ + PAGE_CHANGED, + HISTORY_CHANGED, + N_SIGNALS, +}; + +static guint signals[N_SIGNALS] = {0, }; + +static void ev_page_cache_init (EvPageCache *page_cache); +static void ev_page_cache_class_init (EvPageCacheClass *page_cache); +static void ev_page_cache_finalize (GObject *object); + +G_DEFINE_TYPE (EvPageCache, ev_page_cache, G_TYPE_OBJECT) + +static void +ev_page_cache_init (EvPageCache *page_cache) +{ + page_cache->current_page = -1; + page_cache->max_label_chars = 0; +} + +static void +ev_page_cache_class_init (EvPageCacheClass *class) +{ + GObjectClass *object_class; + + object_class = G_OBJECT_CLASS (class); + + object_class->finalize = ev_page_cache_finalize; + + signals [PAGE_CHANGED] = + g_signal_new ("page-changed", + EV_TYPE_PAGE_CACHE, + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvPageCacheClass, page_changed), + NULL, NULL, + g_cclosure_marshal_VOID__INT, + G_TYPE_NONE, 1, + G_TYPE_INT); + + signals [HISTORY_CHANGED] = + g_signal_new ("history-changed", + EV_TYPE_PAGE_CACHE, + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvPageCacheClass, history_changed), + NULL, NULL, + g_cclosure_marshal_VOID__INT, + G_TYPE_NONE, 1, + G_TYPE_INT); + +} + +static void +ev_page_cache_finalize (GObject *object) +{ + EvPageCache *page_cache; + + page_cache = EV_PAGE_CACHE (object); + + if (page_cache->title) { + g_free (page_cache->title); + page_cache->title = NULL; + } + + if (page_cache->size_cache) { + g_free (page_cache->size_cache); + page_cache->size_cache = NULL; + } + + if (page_cache->thumbs_size_cache) { + g_free (page_cache->thumbs_size_cache); + page_cache->thumbs_size_cache = NULL; + } + + if (page_cache->height_to_page) { + g_free (page_cache->height_to_page); + page_cache->height_to_page = NULL; + } + + if (page_cache->dual_height_to_page) { + g_free (page_cache->dual_height_to_page); + page_cache->dual_height_to_page = NULL; + } + + if (page_cache->page_labels) { + gint i; + + for (i = 0; i < page_cache->n_pages; i++) { + if (page_cache->page_labels[i]) + g_free (page_cache->page_labels[i]); + } + g_free (page_cache->page_labels); + page_cache->page_labels = NULL; + } + + if (page_cache->page_info) { + ev_document_info_free (page_cache->page_info); + page_cache->page_info = NULL; + } + + G_OBJECT_CLASS (ev_page_cache_parent_class)->finalize (object); +} + +static void +build_height_to_page (EvPageCache *page_cache) +{ + gboolean swap; + int i; + double uniform_height, page_height, next_page_height; + double saved_height; + + swap = (page_cache->rotation == 90 || + page_cache->rotation == 270); + + g_free (page_cache->height_to_page); + g_free (page_cache->dual_height_to_page); + + page_cache->height_to_page = g_new0(double, page_cache->n_pages + 1); + page_cache->dual_height_to_page = g_new0(double, page_cache->n_pages + 2); + + saved_height = 0; + for (i = 0; i <= page_cache->n_pages; i++) { + if (page_cache->uniform) { + if (!swap) { + uniform_height = page_cache->uniform_height; + } else { + uniform_height = page_cache->uniform_width; + } + page_cache->height_to_page [i] = i * uniform_height; + } else { + if (i < page_cache->n_pages) { + if (!swap) { + page_height = page_cache->size_cache [i].height; + } else { + page_height = page_cache->size_cache [i].width; + } + } else { + page_height = 0; + } + page_cache->height_to_page [i] = saved_height; + saved_height += page_height; + } + } + + if (page_cache->dual_even_left && !page_cache->uniform) { + if (!swap) { + saved_height = page_cache->size_cache [0].height; + } else { + saved_height = page_cache->size_cache [0].width; + } + } else { + saved_height = 0; + } + for (i = page_cache->dual_even_left; i < page_cache->n_pages + 2; i += 2) { + if (page_cache->uniform) { + if (!swap) { + uniform_height = page_cache->uniform_height; + } else { + uniform_height = page_cache->uniform_width; + } + page_cache->dual_height_to_page [i] = ((i + page_cache->dual_even_left) / 2) * uniform_height; + if (i + 1 < page_cache->n_pages + 2) + page_cache->dual_height_to_page [i + 1] = ((i + page_cache->dual_even_left) / 2) * uniform_height; + } else { + if (i + 1 < page_cache->n_pages) { + if (!swap) { + next_page_height = page_cache->size_cache [i + 1].height; + } else { + next_page_height = page_cache->size_cache [i + 1].width; + } + } else { + next_page_height = 0; + } + if (i < page_cache->n_pages) { + if (!swap) { + page_height = page_cache->size_cache [i].height; + } else { + page_height = page_cache->size_cache [i].width; + } + } else { + page_height = 0; + } + if (i + 1 < page_cache->n_pages + 2) { + page_cache->dual_height_to_page [i] = saved_height; + page_cache->dual_height_to_page [i + 1] = saved_height; + saved_height += MAX(page_height, next_page_height); + } else { + page_cache->dual_height_to_page [i] = saved_height; + } + } + } +} + +EvPageCache * +ev_page_cache_new (EvDocument *document) +{ + EvPageCache *page_cache; + EvPageCacheInfo *info; + EvPageThumbsInfo *thumb_info; + EvRenderContext *rc = NULL; + gboolean has_thumbs; + gint i; + + page_cache = (EvPageCache *) g_object_new (EV_TYPE_PAGE_CACHE, NULL); + + ev_document_doc_mutex_lock (); + + /* We read page information out of the document */ + + /* Assume all pages are the same size until proven otherwise */ + page_cache->uniform = TRUE; + page_cache->has_labels = FALSE; + page_cache->n_pages = ev_document_get_n_pages (document); + page_cache->dual_even_left = (page_cache->n_pages > 2); + page_cache->page_labels = g_new0 (char *, page_cache->n_pages); + page_cache->max_width = 0; + page_cache->max_height = 0; + page_cache->page_info = ev_document_get_info (document); + page_cache->thumbs_uniform = TRUE; + + if (page_cache->page_info->fields_mask & EV_DOCUMENT_INFO_TITLE) { + page_cache->title = g_strdup (page_cache->page_info->title); + } else { + page_cache->title = NULL; + } + + has_thumbs = EV_IS_DOCUMENT_THUMBNAILS (document); + + for (i = 0; i < page_cache->n_pages; i++) { + EvPage *page; + double page_width = 0; + double page_height = 0; + gint thumb_width = 0; + gint thumb_height = 0; + + page = ev_document_get_page (document, i); + + ev_document_get_page_size (document, page, &page_width, &page_height); + + page_cache->page_labels[i] = ev_document_get_page_label (document, page); + + if (page_cache->page_labels[i] != NULL) { + + page_cache->max_label_chars = MAX (page_cache->max_label_chars, + g_utf8_strlen (page_cache->page_labels[i], 256)); + if (!page_cache->has_labels) { + gchar *expected_label; + + expected_label = g_strdup_printf ("%d", i + 1); + if (strcmp (expected_label, page_cache->page_labels[i])) + page_cache->has_labels = TRUE; + g_free (expected_label); + } + } + + if (page_width > page_cache->max_width) { + page_cache->max_width = page_width; + } + + if (page_height > page_cache->max_height) { + page_cache->max_height = page_height; + } + + if (i == 0) { + page_cache->uniform_width = page_width; + page_cache->uniform_height = page_height; + } else if (page_cache->uniform && + (page_cache->uniform_width != page_width || + page_cache->uniform_height != page_height)) { + /* It's a different page size. Backfill the array. */ + int j; + + page_cache->size_cache = g_new0 (EvPageCacheInfo, page_cache->n_pages); + + for (j = 0; j < i; j++) { + info = &(page_cache->size_cache [j]); + info->width = page_cache->uniform_width; + info->height = page_cache->uniform_height; + } + page_cache->uniform = FALSE; + + } + + if (! page_cache->uniform) { + info = &(page_cache->size_cache [i]); + + info->width = page_width; + info->height = page_height; + } + + if (!has_thumbs) { + g_object_unref (page); + continue; + } + + if (!rc) { + rc = ev_render_context_new (page, 0, (gdouble)THUMBNAIL_WIDTH / page_width); + } else { + ev_render_context_set_page (rc, page); + ev_render_context_set_scale (rc, (gdouble)THUMBNAIL_WIDTH / page_width); + } + + ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (document), + rc, &thumb_width, &thumb_height); + + if (thumb_width > page_cache->thumbs_max_width) { + page_cache->thumbs_max_width = thumb_width; + } + + if (thumb_height > page_cache->thumbs_max_height) { + page_cache->thumbs_max_height = thumb_height; + } + + if (i == 0) { + page_cache->thumbs_uniform_width = thumb_width; + page_cache->thumbs_uniform_height = thumb_height; + } else if (page_cache->thumbs_uniform && + (page_cache->thumbs_uniform_width != thumb_width || + page_cache->thumbs_uniform_height != thumb_height)) { + /* It's a different thumbnail size. Backfill the array. */ + int j; + + page_cache->thumbs_size_cache = g_new0 (EvPageThumbsInfo, page_cache->n_pages); + + for (j = 0; j < i; j++) { + thumb_info = &(page_cache->thumbs_size_cache [j]); + thumb_info->width = page_cache->thumbs_uniform_width; + thumb_info->height = page_cache->thumbs_uniform_height; + } + page_cache->thumbs_uniform = FALSE; + } + + if (! page_cache->thumbs_uniform) { + thumb_info = &(page_cache->thumbs_size_cache [i]); + + thumb_info->width = thumb_width; + thumb_info->height = thumb_height; + } + + g_object_unref (page); + } + + if (rc) { + g_object_unref (rc); + } + + build_height_to_page (page_cache); + + /* make some sanity check assertions */ + if (! page_cache->uniform) + g_assert (page_cache->size_cache != NULL); + if (page_cache->uniform && page_cache->n_pages > 0) + g_assert (page_cache->uniform_width > 0 && page_cache->uniform_height > 0); + + ev_document_doc_mutex_unlock (); + + if (page_cache->n_pages > 0) + ev_page_cache_set_current_page (page_cache, 0); + + return page_cache; +} + +gint +ev_page_cache_get_n_pages (EvPageCache *page_cache) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0); + + return page_cache->n_pages; +} + +gint +ev_page_cache_get_current_page (EvPageCache *page_cache) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0); + + return page_cache->current_page; +} + +void +ev_page_cache_set_current_page (EvPageCache *page_cache, + int page) +{ + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + g_return_if_fail (page >= 0 || page < page_cache->n_pages); + + if (page == page_cache->current_page) + return; + + page_cache->current_page = page; + g_signal_emit (page_cache, signals[PAGE_CHANGED], 0, page); +} + +void +ev_page_cache_set_current_page_history (EvPageCache *page_cache, + int page) +{ + if (abs (page - page_cache->current_page) > 1) + g_signal_emit (page_cache, signals [HISTORY_CHANGED], 0, page); + + ev_page_cache_set_current_page (page_cache, page); +} + +gboolean +ev_page_cache_set_page_label (EvPageCache *page_cache, + const char *page_label) +{ + gint i, page; + long value; + char *endptr = NULL; + + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), FALSE); + g_return_val_if_fail (page_label != NULL, FALSE); + + /* First, look for a literal label match */ + for (i = 0; i < page_cache->n_pages; i ++) { + if (page_cache->page_labels[i] != NULL && + ! strcmp (page_label, page_cache->page_labels[i])) { + ev_page_cache_set_current_page (page_cache, i); + return TRUE; + } + } + + /* Second, look for a match with case insensitively */ + for (i = 0; i < page_cache->n_pages; i++) { + if (page_cache->page_labels[i] != NULL && + ! strcasecmp (page_label, page_cache->page_labels[i])) { + ev_page_cache_set_current_page (page_cache, i); + return TRUE; + } + } + + /* Next, parse the label, and see if the number fits */ + value = strtol (page_label, &endptr, 10); + if (endptr[0] == '\0') { + /* Page number is an integer */ + page = MIN (G_MAXINT, value); + + /* convert from a page label to a page offset */ + page --; + if (page >= 0 && + page < page_cache->n_pages) { + ev_page_cache_set_current_page (page_cache, page); + return TRUE; + } + } + + return FALSE; +} + +const char * +ev_page_cache_get_title (EvPageCache *page_cache) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), NULL); + + return page_cache->title; +} + +void +ev_page_cache_get_size (EvPageCache *page_cache, + gint page, + gint rotation, + gfloat scale, + gint *width, + gint *height) +{ + double w, h; + + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + g_return_if_fail (page >= 0 && page < page_cache->n_pages); + + if (page_cache->uniform) { + w = page_cache->uniform_width; + h = page_cache->uniform_height; + } else { + EvPageCacheInfo *info; + + info = &(page_cache->size_cache [page]); + + w = info->width; + h = info->height; + } + + w = w * scale + 0.5; + h = h * scale + 0.5; + + if (rotation == 0 || rotation == 180) { + if (width) *width = (int)w; + if (height) *height = (int)h; + } else { + if (width) *width = (int)h; + if (height) *height = (int)w; + } +} + +void +ev_page_cache_get_max_width (EvPageCache *page_cache, + gint rotation, + gfloat scale, + gint *width) +{ + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + + if (width) { + if (rotation == 0 || rotation == 180) { + *width = page_cache->max_width * scale; + } else { + *width = page_cache->max_height * scale; + } + } +} + +void +ev_page_cache_get_max_height (EvPageCache *page_cache, + gint rotation, + gfloat scale, + gint *height) +{ + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + + if (height) { + if (rotation == 0 || rotation == 180) { + *height = page_cache->max_height * scale; + } else { + *height = page_cache->max_width * scale; + } + } +} + +void +ev_page_cache_get_height_to_page (EvPageCache *page_cache, + gint page, + gint rotation, + gfloat scale, + gint *height, + gint *dual_height) +{ + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + g_return_if_fail (page >= 0); + g_return_if_fail (!height || page <= page_cache->n_pages); + g_return_if_fail (!dual_height || page <= page_cache->n_pages + 1); + + if (page_cache->rotation != rotation) { + page_cache->rotation = rotation; + build_height_to_page (page_cache); + } + + if (height) + *height = page_cache->height_to_page [page] * scale; + + if (dual_height) + *dual_height = page_cache->dual_height_to_page [page] * scale; +} + +void +ev_page_cache_get_thumbnail_size (EvPageCache *page_cache, + gint page, + gint rotation, + gint *width, + gint *height) +{ + gint w, h; + + g_return_if_fail (EV_IS_PAGE_CACHE (page_cache)); + g_return_if_fail (page >= 0 && page < page_cache->n_pages); + + if (page_cache->thumbs_uniform) { + w = page_cache->thumbs_uniform_width; + h = page_cache->thumbs_uniform_height; + } else { + EvPageThumbsInfo *info; + + info = &(page_cache->thumbs_size_cache [page]); + + w = info->width; + h = info->height; + } + + if (rotation == 0 || rotation == 180) { + if (width) *width = w; + if (height) *height = h; + } else { + if (width) *width = h; + if (height) *height = w; + } +} + +gint +ev_page_cache_get_max_label_chars (EvPageCache *page_cache) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0); + + return page_cache->max_label_chars; +} + +gboolean +ev_page_cache_get_dual_even_left (EvPageCache *page_cache) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), 0); + + return page_cache->dual_even_left; +} + +gchar * +ev_page_cache_get_page_label (EvPageCache *page_cache, + gint page) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), NULL); + g_return_val_if_fail (page >= 0 && page < page_cache->n_pages, NULL); + + if (page_cache->page_labels[page] == NULL) + return g_strdup_printf ("%d", page + 1); + + return g_strdup (page_cache->page_labels[page]); +} + +gboolean +ev_page_cache_has_nonnumeric_page_labels (EvPageCache *page_cache) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), FALSE); + return page_cache->has_labels; +} + +const EvDocumentInfo * +ev_page_cache_get_info (EvPageCache *page_cache) +{ + g_return_val_if_fail (EV_IS_PAGE_CACHE (page_cache), NULL); + + return page_cache->page_info; +} + +#define PAGE_CACHE_STRING "ev-page-cache" + +EvPageCache * +ev_page_cache_get (EvDocument *document) +{ + EvPageCache *page_cache; + + g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL); + + page_cache = g_object_get_data (G_OBJECT (document), PAGE_CACHE_STRING); + if (page_cache == NULL) { + page_cache = ev_page_cache_new (document); + g_object_set_data_full (G_OBJECT (document), PAGE_CACHE_STRING, page_cache, g_object_unref); + } + + return page_cache; +} diff --git a/libview/ev-page-cache.h b/libview/ev-page-cache.h new file mode 100644 index 0000000..43f4553 --- /dev/null +++ b/libview/ev-page-cache.h @@ -0,0 +1,85 @@ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2005 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef __EV_PAGE_CACHE_H__ +#define __EV_PAGE_CACHE_H__ + +#include <gtk/gtk.h> + +#include "ev-document.h" + +G_BEGIN_DECLS +#define EV_TYPE_PAGE_CACHE (ev_page_cache_get_type ()) +#define EV_PAGE_CACHE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_PAGE_CACHE, EvPageCache)) +#define EV_IS_PAGE_CACHE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EV_TYPE_PAGE_CACHE)) + +GType ev_page_cache_get_type (void) G_GNUC_CONST; + +/* Used by ev-document.c only */ +EvPageCache *ev_page_cache_new (EvDocument *document); +gint ev_page_cache_get_n_pages (EvPageCache *page_cache); +const char *ev_page_cache_get_title (EvPageCache *page_cache); +void ev_page_cache_get_size (EvPageCache *page_cache, + gint page, + gint rotation, + gfloat scale, + gint *width, + gint *height); +void ev_page_cache_get_max_width (EvPageCache *page_cache, + gint rotation, + gfloat scale, + gint *width); +void ev_page_cache_get_max_height (EvPageCache *page_cache, + gint rotation, + gfloat scale, + gint *height); +void ev_page_cache_get_height_to_page (EvPageCache *page_cache, + gint page, + gint rotation, + gfloat scale, + gint *height, + gint *dual_height); +void ev_page_cache_get_thumbnail_size (EvPageCache *page_cache, + gint page, + gint rotation, + gint *width, + gint *height); +gint ev_page_cache_get_max_label_chars (EvPageCache *page_cache); +char *ev_page_cache_get_page_label (EvPageCache *page_cache, + gint page); +gboolean ev_page_cache_has_nonnumeric_page_labels (EvPageCache *page_cache); +const EvDocumentInfo *ev_page_cache_get_info (EvPageCache *page_cache); + +gboolean ev_page_cache_get_dual_even_left (EvPageCache *page_cache); + +/* Navigation */ +gint ev_page_cache_get_current_page (EvPageCache *page_cache); +void ev_page_cache_set_current_page (EvPageCache *page_cache, + int page); +void ev_page_cache_set_current_page_history (EvPageCache *page_cache, + int page); +gboolean ev_page_cache_set_page_label (EvPageCache *page_cache, + const char *page_label); + +EvPageCache *ev_page_cache_get (EvDocument *document); + + +G_END_DECLS + +#endif /* __EV_PAGE_CACHE_H__ */ diff --git a/libview/ev-pixbuf-cache.c b/libview/ev-pixbuf-cache.c new file mode 100644 index 0000000..bcc5c02 --- /dev/null +++ b/libview/ev-pixbuf-cache.c @@ -0,0 +1,1253 @@ +#include <config.h> +#include "ev-pixbuf-cache.h" +#include "ev-job-scheduler.h" +#include "ev-page-cache.h" +#include "ev-document-images.h" +#include "ev-document-forms.h" +#include "ev-document-links.h" +#include "ev-image.h" +#include "ev-form-field.h" + +typedef struct _CacheJobInfo +{ + EvJob *job; + EvRenderContext *rc; + gboolean page_ready; + + /* Region of the page that needs to be drawn */ + GdkRegion *region; + + /* Data we get from rendering */ + cairo_surface_t *surface; + GList *link_mapping; + GList *image_mapping; + GList *form_field_mapping; + GdkRegion *text_mapping; + + /* Selection data. + * Selection_points are the coordinates encapsulated in selection. + * target_points is the target selection size. */ + EvRectangle selection_points; + EvRectangle target_points; + EvSelectionStyle selection_style; + gboolean points_set; + + cairo_surface_t *selection; + GdkRegion *selection_region; +} CacheJobInfo; + +struct _EvPixbufCache +{ + GObject parent; + + /* We keep a link to our containing view just for style information. */ + GtkWidget *view; + EvDocument *document; + int start_page; + int end_page; + + /* preload_cache_size is the number of pages prior to the current + * visible area that we cache. It's normally 1, but could be 2 in the + * case of twin pages. + */ + int preload_cache_size; + CacheJobInfo *prev_job; + CacheJobInfo *job_list; + CacheJobInfo *next_job; +}; + +struct _EvPixbufCacheClass +{ + GObjectClass parent_class; + + void (* job_finished) (EvPixbufCache *pixbuf_cache); +}; + + +enum +{ + JOB_FINISHED, + N_SIGNALS, +}; + +static guint signals[N_SIGNALS] = {0, }; + +static void ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache); +static void ev_pixbuf_cache_class_init (EvPixbufCacheClass *pixbuf_cache); +static void ev_pixbuf_cache_finalize (GObject *object); +static void ev_pixbuf_cache_dispose (GObject *object); +static void job_page_ready_cb (EvJob *job, + EvPixbufCache *pixbuf_cache); +static void job_finished_cb (EvJob *job, + EvPixbufCache *pixbuf_cache); +static CacheJobInfo *find_job_cache (EvPixbufCache *pixbuf_cache, + int page); +static void copy_job_to_job_info (EvJobRender *job_render, + CacheJobInfo *job_info, + EvPixbufCache *pixbuf_cache); +static void copy_job_page_and_selection_to_job_info (EvJobRender *job_render, + CacheJobInfo *job_info, + EvPixbufCache *pixbuf_cache); +static gboolean new_selection_surface_needed(EvPixbufCache *pixbuf_cache, + CacheJobInfo *job_info, + gint page, + gfloat scale); + + +/* These are used for iterating through the prev and next arrays */ +#define FIRST_VISIBLE_PREV(pixbuf_cache) \ + (MAX (0, pixbuf_cache->preload_cache_size - pixbuf_cache->start_page)) +#define VISIBLE_NEXT_LEN(pixbuf_cache, page_cache) \ + (MIN(pixbuf_cache->preload_cache_size, ev_page_cache_get_n_pages (page_cache) - (1 + pixbuf_cache->end_page))) +#define PAGE_CACHE_LEN(pixbuf_cache) \ + ((pixbuf_cache->end_page - pixbuf_cache->start_page) + 1) + +G_DEFINE_TYPE (EvPixbufCache, ev_pixbuf_cache, G_TYPE_OBJECT) + +static void +ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache) +{ + pixbuf_cache->start_page = 0; + pixbuf_cache->end_page = 0; + pixbuf_cache->job_list = g_new0 (CacheJobInfo, PAGE_CACHE_LEN (pixbuf_cache)); + + pixbuf_cache->preload_cache_size = 2; + pixbuf_cache->prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size); + pixbuf_cache->next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size); +} + +static void +ev_pixbuf_cache_class_init (EvPixbufCacheClass *class) +{ + GObjectClass *object_class; + + object_class = G_OBJECT_CLASS (class); + + object_class->finalize = ev_pixbuf_cache_finalize; + object_class->dispose = ev_pixbuf_cache_dispose; + + signals[JOB_FINISHED] = + g_signal_new ("job-finished", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvPixbufCacheClass, job_finished), + NULL, NULL, + g_cclosure_marshal_VOID__POINTER, + G_TYPE_NONE, 1, + G_TYPE_POINTER); +} + +static void +ev_pixbuf_cache_finalize (GObject *object) +{ + EvPixbufCache *pixbuf_cache; + + pixbuf_cache = EV_PIXBUF_CACHE (object); + + g_free (pixbuf_cache->prev_job); + g_free (pixbuf_cache->job_list); + g_free (pixbuf_cache->next_job); + + G_OBJECT_CLASS (ev_pixbuf_cache_parent_class)->finalize (object); +} + +static void +dispose_cache_job_info (CacheJobInfo *job_info, + gpointer data) +{ + if (job_info == NULL) + return; + if (job_info->job) { + g_signal_handlers_disconnect_by_func (job_info->job, + G_CALLBACK (job_page_ready_cb), + data); + g_signal_handlers_disconnect_by_func (job_info->job, + G_CALLBACK (job_finished_cb), + data); + ev_job_cancel (job_info->job); + g_object_unref (job_info->job); + job_info->job = NULL; + } + if (job_info->surface) { + cairo_surface_destroy (job_info->surface); + job_info->surface = NULL; + } + if (job_info->region) { + gdk_region_destroy (job_info->region); + job_info->region = NULL; + } + if (job_info->link_mapping) { + ev_link_mapping_free (job_info->link_mapping); + job_info->link_mapping = NULL; + } + if (job_info->image_mapping) { + ev_image_mapping_free (job_info->image_mapping); + job_info->image_mapping = NULL; + } + if (job_info->form_field_mapping) { + ev_form_field_mapping_free (job_info->form_field_mapping); + job_info->form_field_mapping = NULL; + } + if (job_info->text_mapping) { + gdk_region_destroy (job_info->text_mapping); + job_info->text_mapping = NULL; + } + if (job_info->selection) { + cairo_surface_destroy (job_info->selection); + job_info->selection = NULL; + } + if (job_info->selection_region) { + gdk_region_destroy (job_info->selection_region); + job_info->selection_region = NULL; + } + if (job_info->rc) { + g_object_unref (G_OBJECT (job_info->rc)); + job_info->rc = NULL; + } + + job_info->points_set = FALSE; +} + +static void +ev_pixbuf_cache_dispose (GObject *object) +{ + EvPixbufCache *pixbuf_cache; + int i; + + pixbuf_cache = EV_PIXBUF_CACHE (object); + + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache); + dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache); + } + + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache); + } + + G_OBJECT_CLASS (ev_pixbuf_cache_parent_class)->dispose (object); +} + + +EvPixbufCache * +ev_pixbuf_cache_new (GtkWidget *view, + EvDocument *document) +{ + EvPixbufCache *pixbuf_cache; + + pixbuf_cache = (EvPixbufCache *) g_object_new (EV_TYPE_PIXBUF_CACHE, NULL); + /* This is a backlink, so we don't ref this */ + pixbuf_cache->view = view; + pixbuf_cache->document = document; + + return pixbuf_cache; +} + +static void +job_page_ready_cb (EvJob *job, + EvPixbufCache *pixbuf_cache) +{ + CacheJobInfo *job_info; + EvJobRender *job_render = EV_JOB_RENDER (job); + + /* If the job is outside of our interest, we silently discard it */ + if ((job_render->page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size)) || + (job_render->page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))) { + g_object_unref (job); + return; + } + + job_info = find_job_cache (pixbuf_cache, job_render->page); + + copy_job_page_and_selection_to_job_info (job_render, job_info, pixbuf_cache); + g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region); +} + +static void +job_finished_cb (EvJob *job, + EvPixbufCache *pixbuf_cache) +{ + CacheJobInfo *job_info; + EvJobRender *job_render = EV_JOB_RENDER (job); + + /* If the job is outside of our interest, we silently discard it */ + if ((job_render->page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size)) || + (job_render->page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))) { + g_object_unref (job); + return; + } + + job_info = find_job_cache (pixbuf_cache, job_render->page); + copy_job_to_job_info (job_render, job_info, pixbuf_cache); +} + +/* This checks a job to see if the job would generate the right sized pixbuf + * given a scale. If it won't, it removes the job and clears it to NULL. + */ +static void +check_job_size_and_unref (EvPixbufCache *pixbuf_cache, + CacheJobInfo *job_info, + EvPageCache *page_cache, + gfloat scale) +{ + gint width; + gint height; + + g_assert (job_info); + + if (job_info->job == NULL) + return; + + ev_page_cache_get_size (page_cache, + EV_JOB_RENDER (job_info->job)->page, + EV_JOB_RENDER (job_info->job)->rotation, + scale, + &width, &height); + + if (width == EV_JOB_RENDER (job_info->job)->target_width && + height == EV_JOB_RENDER (job_info->job)->target_height) + return; + + g_signal_handlers_disconnect_by_func (job_info->job, + G_CALLBACK (job_page_ready_cb), + pixbuf_cache); + g_signal_handlers_disconnect_by_func (job_info->job, + G_CALLBACK (job_finished_cb), + pixbuf_cache); + ev_job_cancel (job_info->job); + g_object_unref (job_info->job); + job_info->job = NULL; +} + +/* Do all function that copies a job from an older cache to it's position in the + * new cache. It clears the old job if it doesn't have a place. + */ +static void +move_one_job (CacheJobInfo *job_info, + EvPixbufCache *pixbuf_cache, + int page, + CacheJobInfo *new_job_list, + CacheJobInfo *new_prev_job, + CacheJobInfo *new_next_job, + int start_page, + int end_page, + gint priority) +{ + CacheJobInfo *target_page = NULL; + int page_offset; + gint new_priority; + + if (page < (start_page - pixbuf_cache->preload_cache_size) || + page > (end_page + pixbuf_cache->preload_cache_size)) { + dispose_cache_job_info (job_info, pixbuf_cache); + return; + } + + /* find the target page to copy it over to. */ + if (page < start_page) { + page_offset = (page - (start_page - pixbuf_cache->preload_cache_size)); + + g_assert (page_offset >= 0 && + page_offset < pixbuf_cache->preload_cache_size); + target_page = new_prev_job + page_offset; + new_priority = EV_JOB_PRIORITY_LOW; + } else if (page > end_page) { + page_offset = (page - (end_page + 1)); + + g_assert (page_offset >= 0 && + page_offset < pixbuf_cache->preload_cache_size); + target_page = new_next_job + page_offset; + new_priority = EV_JOB_PRIORITY_LOW; + } else { + page_offset = page - start_page; + g_assert (page_offset >= 0 && + page_offset <= ((end_page - start_page) + 1)); + new_priority = EV_JOB_PRIORITY_URGENT; + target_page = new_job_list + page_offset; + } + + *target_page = *job_info; + job_info->job = NULL; + job_info->region = NULL; + job_info->surface = NULL; + job_info->link_mapping = NULL; + job_info->image_mapping = NULL; + job_info->form_field_mapping = NULL; + + if (new_priority != priority && target_page->job) { + ev_job_scheduler_update_job (target_page->job, new_priority); + } +} + +static void +ev_pixbuf_cache_update_range (EvPixbufCache *pixbuf_cache, + gint start_page, + gint end_page) +{ + CacheJobInfo *new_job_list; + CacheJobInfo *new_prev_job; + CacheJobInfo *new_next_job; + EvPageCache *page_cache; + int i, page; + + if (pixbuf_cache->start_page == start_page && + pixbuf_cache->end_page == end_page) + return; + + page_cache = ev_page_cache_get (pixbuf_cache->document); + + new_job_list = g_new0 (CacheJobInfo, (end_page - start_page) + 1); + new_prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size); + new_next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size); + + /* We go through each job in the old cache and either clear it or move + * it to a new location. */ + + /* Start with the prev cache. */ + page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size; + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + if (page < 0) { + dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache); + } else { + move_one_job (pixbuf_cache->prev_job + i, + pixbuf_cache, page, + new_job_list, new_prev_job, new_next_job, + start_page, end_page, EV_JOB_PRIORITY_LOW); + } + page ++; + } + + page = pixbuf_cache->start_page; + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + move_one_job (pixbuf_cache->job_list + i, + pixbuf_cache, page, + new_job_list, new_prev_job, new_next_job, + start_page, end_page, EV_JOB_PRIORITY_URGENT); + page ++; + } + + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + if (page >= ev_page_cache_get_n_pages (page_cache)) { + dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache); + } else { + move_one_job (pixbuf_cache->next_job + i, + pixbuf_cache, page, + new_job_list, new_prev_job, new_next_job, + start_page, end_page, EV_JOB_PRIORITY_LOW); + } + page ++; + } + + g_free (pixbuf_cache->job_list); + g_free (pixbuf_cache->prev_job); + g_free (pixbuf_cache->next_job); + + pixbuf_cache->job_list = new_job_list; + pixbuf_cache->prev_job = new_prev_job; + pixbuf_cache->next_job = new_next_job; + + pixbuf_cache->start_page = start_page; + pixbuf_cache->end_page = end_page; +} + +static void +copy_job_page_and_selection_to_job_info (EvJobRender *job_render, + CacheJobInfo *job_info, + EvPixbufCache *pixbuf_cache) +{ + if (job_info->rc == NULL) { + job_info->rc = ev_render_context_new (job_render->ev_page, + job_render->rotation, + job_render->scale); + } else { + ev_render_context_set_page (job_info->rc, job_render->ev_page); + ev_render_context_set_rotation (job_info->rc, job_render->rotation); + ev_render_context_set_scale (job_info->rc, job_render->scale); + } + + if (job_info->surface) { + cairo_surface_destroy (job_info->surface); + } + job_info->surface = cairo_surface_reference (job_render->surface); + + job_info->points_set = FALSE; + if (job_render->flags & EV_RENDER_INCLUDE_SELECTION) { + if (job_info->selection) { + cairo_surface_destroy (job_info->selection); + job_info->selection = NULL; + } + if (job_info->selection_region) { + gdk_region_destroy (job_info->selection_region); + job_info->selection_region = NULL; + } + + job_info->selection_points = job_render->selection_points; + job_info->selection_region = gdk_region_copy (job_render->selection_region); + job_info->selection = cairo_surface_reference (job_render->selection); + g_assert (job_info->selection_points.x1 >= 0); + job_info->points_set = TRUE; + } + + if (job_info->job) { + g_signal_handlers_disconnect_by_func (job_info->job, + G_CALLBACK (job_page_ready_cb), + pixbuf_cache); + } + + job_info->page_ready = TRUE; +} + +static void +copy_job_to_job_info (EvJobRender *job_render, + CacheJobInfo *job_info, + EvPixbufCache *pixbuf_cache) +{ + if (!job_info->page_ready) { + g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region); + copy_job_page_and_selection_to_job_info (job_render, + job_info, + pixbuf_cache); + } + + if (job_render->flags & EV_RENDER_INCLUDE_LINKS) { + if (job_info->link_mapping) + ev_link_mapping_free (job_info->link_mapping); + job_info->link_mapping = job_render->link_mapping; + } + + if (job_render->flags & EV_RENDER_INCLUDE_IMAGES) { + if (job_info->image_mapping) + ev_image_mapping_free (job_info->image_mapping); + job_info->image_mapping = job_render->image_mapping; + } + + if (job_render->flags & EV_RENDER_INCLUDE_FORMS) { + if (job_info->form_field_mapping) + ev_form_field_mapping_free (job_info->form_field_mapping); + job_info->form_field_mapping = job_render->form_field_mapping; + } + + if (job_render->flags & EV_RENDER_INCLUDE_TEXT) { + if (job_info->text_mapping) + gdk_region_destroy (job_info->text_mapping); + job_info->text_mapping = job_render->text_mapping; + } + + if (job_info->job) { + g_signal_handlers_disconnect_by_func (job_info->job, + G_CALLBACK (job_finished_cb), + pixbuf_cache); + ev_job_cancel (job_info->job); + g_object_unref (job_info->job); + job_info->job = NULL; + } +} + +static CacheJobInfo * +find_job_cache (EvPixbufCache *pixbuf_cache, + int page) +{ + int page_offset; + + if (page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size) || + page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size)) + return NULL; + + if (page < pixbuf_cache->start_page) { + page_offset = (page - (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size)); + + g_assert (page_offset >= 0 && + page_offset < pixbuf_cache->preload_cache_size); + return pixbuf_cache->prev_job + page_offset; + } + + if (page > pixbuf_cache->end_page) { + page_offset = (page - (pixbuf_cache->end_page + 1)); + + g_assert (page_offset >= 0 && + page_offset < pixbuf_cache->preload_cache_size); + return pixbuf_cache->next_job + page_offset; + } + + page_offset = page - pixbuf_cache->start_page; + g_assert (page_offset >= 0 && + page_offset <= PAGE_CACHE_LEN(pixbuf_cache)); + return pixbuf_cache->job_list + page_offset; +} + +static void +ev_pixbuf_cache_clear_job_sizes (EvPixbufCache *pixbuf_cache, + gfloat scale) +{ + EvPageCache *page_cache; + int i; + + page_cache = ev_page_cache_get (pixbuf_cache->document); + + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + check_job_size_and_unref (pixbuf_cache, pixbuf_cache->job_list + i, page_cache, scale); + } + + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + check_job_size_and_unref (pixbuf_cache, pixbuf_cache->prev_job + i, page_cache, scale); + check_job_size_and_unref (pixbuf_cache, pixbuf_cache->next_job + i, page_cache, scale); + } +} + +static void +get_selection_colors (GtkWidget *widget, GdkColor **text, GdkColor **base) +{ + if (GTK_WIDGET_HAS_FOCUS (widget)) { + *text = &widget->style->text [GTK_STATE_SELECTED]; + *base = &widget->style->base [GTK_STATE_SELECTED]; + } else { + *text = &widget->style->text [GTK_STATE_ACTIVE]; + *base = &widget->style->base [GTK_STATE_ACTIVE]; + } +} + +static void +add_job (EvPixbufCache *pixbuf_cache, + CacheJobInfo *job_info, + EvPageCache *page_cache, + GdkRegion *region, + gint width, + gint height, + gint page, + gint rotation, + gfloat scale, + EvJobPriority priority) +{ + EvRenderFlags flags = 0; + + job_info->page_ready = FALSE; + + if (job_info->region) + gdk_region_destroy (job_info->region); + job_info->region = region ? gdk_region_copy (region) : NULL; + + /* Figure out what else we need for this job */ + if (job_info->link_mapping == NULL) + flags |= EV_RENDER_INCLUDE_LINKS; + if (job_info->image_mapping == NULL) + flags |= EV_RENDER_INCLUDE_IMAGES; + if (job_info->form_field_mapping == NULL) + flags |= EV_RENDER_INCLUDE_FORMS; + if (job_info->text_mapping == NULL) + flags |= EV_RENDER_INCLUDE_TEXT; + + job_info->job = ev_job_render_new (pixbuf_cache->document, + page, rotation, scale, + width, height, + flags); + + if (new_selection_surface_needed (pixbuf_cache, job_info, page, scale)) { + GdkColor *text, *base; + + gtk_widget_ensure_style (pixbuf_cache->view); + get_selection_colors (pixbuf_cache->view, &text, &base); + ev_job_render_set_selection_info (EV_JOB_RENDER (job_info->job), + &(job_info->target_points), + job_info->selection_style, + text, base); + } + + g_signal_connect (G_OBJECT (job_info->job), "page-ready", + G_CALLBACK (job_page_ready_cb), + pixbuf_cache); + g_signal_connect (G_OBJECT (job_info->job), "finished", + G_CALLBACK (job_finished_cb), + pixbuf_cache); + ev_job_scheduler_push_job (job_info->job, priority); +} + +static void +add_job_if_needed (EvPixbufCache *pixbuf_cache, + CacheJobInfo *job_info, + EvPageCache *page_cache, + gint page, + gint rotation, + gfloat scale, + EvJobPriority priority) +{ + gint width, height; + + if (job_info->job) + return; + + ev_page_cache_get_size (page_cache, page, rotation, + scale, &width, &height); + + if (job_info->surface && + cairo_image_surface_get_width (job_info->surface) == width && + cairo_image_surface_get_height (job_info->surface) == height) + return; + + add_job (pixbuf_cache, job_info, page_cache, NULL, + width, height, page, rotation, scale, + priority); +} + +static void +ev_pixbuf_cache_add_jobs_if_needed (EvPixbufCache *pixbuf_cache, + gint rotation, + gfloat scale) +{ + EvPageCache *page_cache; + CacheJobInfo *job_info; + int page; + int i; + + page_cache = ev_page_cache_get (pixbuf_cache->document); + + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + job_info = (pixbuf_cache->job_list + i); + page = pixbuf_cache->start_page + i; + + add_job_if_needed (pixbuf_cache, job_info, + page_cache, page, rotation, scale, + EV_JOB_PRIORITY_URGENT); + } + + for (i = FIRST_VISIBLE_PREV(pixbuf_cache); i < pixbuf_cache->preload_cache_size; i++) { + job_info = (pixbuf_cache->prev_job + i); + page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size + i; + + add_job_if_needed (pixbuf_cache, job_info, + page_cache, page, rotation, scale, + EV_JOB_PRIORITY_LOW); + } + + for (i = 0; i < VISIBLE_NEXT_LEN(pixbuf_cache, page_cache); i++) { + job_info = (pixbuf_cache->next_job + i); + page = pixbuf_cache->end_page + 1 + i; + + add_job_if_needed (pixbuf_cache, job_info, + page_cache, page, rotation, scale, + EV_JOB_PRIORITY_LOW); + } + +} + +void +ev_pixbuf_cache_set_page_range (EvPixbufCache *pixbuf_cache, + gint start_page, + gint end_page, + gint rotation, + gfloat scale, + GList *selection_list) +{ + EvPageCache *page_cache; + + g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache)); + + page_cache = ev_page_cache_get (pixbuf_cache->document); + + g_return_if_fail (start_page >= 0 && start_page < ev_page_cache_get_n_pages (page_cache)); + g_return_if_fail (end_page >= 0 && end_page < ev_page_cache_get_n_pages (page_cache)); + g_return_if_fail (end_page >= start_page); + + /* First, resize the page_range as needed. We cull old pages + * mercilessly. */ + ev_pixbuf_cache_update_range (pixbuf_cache, start_page, end_page); + + /* Then, we update the current jobs to see if any of them are the wrong + * size, we remove them if we need to. */ + ev_pixbuf_cache_clear_job_sizes (pixbuf_cache, scale); + + /* Next, we update the target selection for our pages */ + ev_pixbuf_cache_set_selection_list (pixbuf_cache, selection_list); + + /* Finally, we add the new jobs for all the sizes that don't have a + * pixbuf */ + ev_pixbuf_cache_add_jobs_if_needed (pixbuf_cache, rotation, scale); +} + +cairo_surface_t * +ev_pixbuf_cache_get_surface (EvPixbufCache *pixbuf_cache, + gint page) +{ + CacheJobInfo *job_info; + + job_info = find_job_cache (pixbuf_cache, page); + if (job_info == NULL) + return NULL; + + if (job_info->page_ready) + return job_info->surface; + + /* We don't need to wait for the idle to handle the callback */ + if (job_info->job && + EV_JOB_RENDER (job_info->job)->page_ready) { + copy_job_page_and_selection_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache); + g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region); + } + + return job_info->surface; +} + +GList * +ev_pixbuf_cache_get_link_mapping (EvPixbufCache *pixbuf_cache, + gint page) +{ + CacheJobInfo *job_info; + + job_info = find_job_cache (pixbuf_cache, page); + if (job_info == NULL) + return NULL; + + /* We don't need to wait for the idle to handle the callback */ + if (job_info->job && + EV_JOB (job_info->job)->finished) { + copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache); + } + + return job_info->link_mapping; +} + +GList * +ev_pixbuf_cache_get_image_mapping (EvPixbufCache *pixbuf_cache, + gint page) +{ + CacheJobInfo *job_info; + + if (!EV_IS_DOCUMENT_IMAGES (pixbuf_cache->document)) + return NULL; + + job_info = find_job_cache (pixbuf_cache, page); + if (job_info == NULL) + return NULL; + + /* We don't need to wait for the idle to handle the callback */ + if (job_info->job && + EV_JOB (job_info->job)->finished) { + copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache); + } + + return job_info->image_mapping; +} + +GList * +ev_pixbuf_cache_get_form_field_mapping (EvPixbufCache *pixbuf_cache, + gint page) +{ + CacheJobInfo *job_info; + + if (!EV_IS_DOCUMENT_FORMS (pixbuf_cache->document)) + return NULL; + + job_info = find_job_cache (pixbuf_cache, page); + if (job_info == NULL) + return NULL; + + /* We don't need to wait for the idle to handle the callback */ + if (job_info->job && + EV_JOB (job_info->job)->finished) { + copy_job_to_job_info (EV_JOB_RENDER(job_info->job), job_info, pixbuf_cache); + } + + return job_info->form_field_mapping; +} + +static gboolean +new_selection_surface_needed (EvPixbufCache *pixbuf_cache, + CacheJobInfo *job_info, + gint page, + gfloat scale) +{ + EvPageCache *page_cache; + + if (job_info->selection && job_info->rc) { + gint width, height; + gint selection_width, selection_height; + + page_cache = ev_page_cache_get (pixbuf_cache->document); + ev_page_cache_get_size (page_cache, page, + job_info->rc->rotation, + scale, &width, &height); + + selection_width = cairo_image_surface_get_width (job_info->selection); + selection_height = cairo_image_surface_get_height (job_info->selection); + + if (width != selection_width || height != selection_height) + return TRUE; + } else { + if (job_info->points_set) + return TRUE; + } + + return FALSE; +} + +static void +clear_selection_if_needed (EvPixbufCache *pixbuf_cache, + CacheJobInfo *job_info, + gint page, + gfloat scale) +{ + if (new_selection_surface_needed (pixbuf_cache, job_info, page, scale)) { + if (job_info->selection) + cairo_surface_destroy (job_info->selection); + job_info->selection = NULL; + job_info->selection_points.x1 = -1; + } +} + +GdkRegion * +ev_pixbuf_cache_get_text_mapping (EvPixbufCache *pixbuf_cache, + gint page) +{ + CacheJobInfo *job_info; + + job_info = find_job_cache (pixbuf_cache, page); + if (job_info == NULL) + return NULL; + + /* We don't need to wait for the idle to handle the callback */ + if (job_info->job && + EV_JOB (job_info->job)->finished) { + copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache); + } + + return job_info->text_mapping; +} + +/* Clears the cache of jobs and pixbufs. + */ +void +ev_pixbuf_cache_clear (EvPixbufCache *pixbuf_cache) +{ + int i; + + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache); + dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache); + } + + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache); + } +} + + +void +ev_pixbuf_cache_style_changed (EvPixbufCache *pixbuf_cache) +{ + gint i; + + /* FIXME: doesn't update running jobs. */ + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + CacheJobInfo *job_info; + + job_info = pixbuf_cache->prev_job + i; + if (job_info->selection) { + cairo_surface_destroy (job_info->selection); + job_info->selection = NULL; + } + + job_info = pixbuf_cache->next_job + i; + if (job_info->selection) { + cairo_surface_destroy (job_info->selection); + job_info->selection = NULL; + } + } + + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + CacheJobInfo *job_info; + + job_info = pixbuf_cache->job_list + i; + if (job_info->selection) { + cairo_surface_destroy (job_info->selection); + job_info->selection = NULL; + } + } +} + +cairo_surface_t * +ev_pixbuf_cache_get_selection_surface (EvPixbufCache *pixbuf_cache, + gint page, + gfloat scale, + GdkRegion **region) +{ + CacheJobInfo *job_info; + + /* the document does not implement the selection interface */ + if (!EV_IS_SELECTION (pixbuf_cache->document)) + return NULL; + + job_info = find_job_cache (pixbuf_cache, page); + if (job_info == NULL) + return NULL; + + /* No selection on this page */ + if (!job_info->points_set) + return NULL; + + /* Create new render context if needed (selection + fast scrolling) */ + if (job_info->rc == NULL) { + EvPage *ev_page; + ev_page = ev_document_get_page (pixbuf_cache->document, page); + job_info->rc = ev_render_context_new (ev_page, 0, scale); + g_object_unref (ev_page); + } + + /* Update the rc */ + ev_render_context_set_scale (job_info->rc, scale); + + /* If we have a running job, we just return what we have under the + * assumption that it'll be updated later and we can scale it as need + * be */ + if (job_info->job && (EV_JOB_RENDER (job_info->job)->flags & EV_RENDER_INCLUDE_SELECTION)) + return job_info->selection; + + /* Now, lets see if we need to resize the image. If we do, we clear the + * old one. */ + clear_selection_if_needed (pixbuf_cache, job_info, page, scale); + + /* Finally, we see if the two scales are the same, and get a new pixbuf + * if needed. We do this synchronously for now. At some point, we + * _should_ be able to get rid of the doc_mutex, so the synchronicity + * doesn't kill us. Rendering a few glyphs should really be fast. + */ + if (ev_rect_cmp (&(job_info->target_points), &(job_info->selection_points))) { + EvRectangle *old_points; + GdkColor *text, *base; + + /* we need to get a new selection pixbuf */ + ev_document_doc_mutex_lock (); + if (job_info->selection_points.x1 < 0) { + g_assert (job_info->selection == NULL); + old_points = NULL; + } else { + g_assert (job_info->selection != NULL); + old_points = &(job_info->selection_points); + } + + if (job_info->selection_region) + gdk_region_destroy (job_info->selection_region); + job_info->selection_region = + ev_selection_get_selection_region (EV_SELECTION (pixbuf_cache->document), + job_info->rc, + job_info->selection_style, + &(job_info->target_points)); + + gtk_widget_ensure_style (pixbuf_cache->view); + + get_selection_colors (pixbuf_cache->view, &text, &base); + + ev_selection_render_selection (EV_SELECTION (pixbuf_cache->document), + job_info->rc, &(job_info->selection), + &(job_info->target_points), + old_points, + job_info->selection_style, + text, base); + job_info->selection_points = job_info->target_points; + ev_document_doc_mutex_unlock (); + } + if (region) + *region = job_info->selection_region; + return job_info->selection; +} + +static void +update_job_selection (CacheJobInfo *job_info, + EvViewSelection *selection) +{ + job_info->points_set = TRUE; + job_info->target_points = selection->rect; + job_info->selection_style = selection->style; +} + +static void +clear_job_selection (CacheJobInfo *job_info) +{ + job_info->points_set = FALSE; + job_info->selection_points.x1 = -1; + + if (job_info->selection) { + cairo_surface_destroy (job_info->selection); + job_info->selection = NULL; + } +} + +/* This function will reset the selection on pages that no longer have them, and + * will update the target_selection on those that need it. It will _not_ free + * the previous selection_list -- that's up to caller to do. + */ +void +ev_pixbuf_cache_set_selection_list (EvPixbufCache *pixbuf_cache, + GList *selection_list) +{ + EvPageCache *page_cache; + EvViewSelection *selection; + GList *list = selection_list; + int page; + int i; + + g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache)); + + if (!EV_IS_SELECTION (pixbuf_cache->document)) + return; + + page_cache = ev_page_cache_get (pixbuf_cache->document); + + /* We check each area to see what needs updating, and what needs freeing; */ + page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size; + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + if (page < 0) { + page ++; + continue; + } + + selection = NULL; + while (list) { + if (((EvViewSelection *)list->data)->page == page) { + selection = list->data; + break; + } else if (((EvViewSelection *)list->data)->page > page) + break; + list = list->next; + } + + if (selection) + update_job_selection (pixbuf_cache->prev_job + i, selection); + else + clear_job_selection (pixbuf_cache->prev_job + i); + page ++; + } + + page = pixbuf_cache->start_page; + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + selection = NULL; + while (list) { + if (((EvViewSelection *)list->data)->page == page) { + selection = list->data; + break; + } else if (((EvViewSelection *)list->data)->page > page) + break; + list = list->next; + } + + if (selection) + update_job_selection (pixbuf_cache->job_list + i, selection); + else + clear_job_selection (pixbuf_cache->job_list + i); + page ++; + } + + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + if (page >= ev_page_cache_get_n_pages (page_cache)) + break; + + selection = NULL; + while (list) { + if (((EvViewSelection *)list->data)->page == page) { + selection = list->data; + break; + } else if (((EvViewSelection *)list->data)->page > page) + break; + list = list->next; + } + + if (selection) + update_job_selection (pixbuf_cache->next_job + i, selection); + else + clear_job_selection (pixbuf_cache->next_job + i); + page ++; + } +} + + +/* Returns what the pixbuf cache thinks is */ + +GList * +ev_pixbuf_cache_get_selection_list (EvPixbufCache *pixbuf_cache) +{ + EvPageCache *page_cache; + EvViewSelection *selection; + GList *retval = NULL; + int page; + int i; + + g_return_val_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache), NULL); + + page_cache = ev_page_cache_get (pixbuf_cache->document); + + /* We check each area to see what needs updating, and what needs freeing; */ + page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size; + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + if (page < 0) { + page ++; + continue; + } + + if (pixbuf_cache->prev_job[i].selection_points.x1 != -1) { + selection = g_new0 (EvViewSelection, 1); + selection->page = page; + selection->rect = pixbuf_cache->prev_job[i].selection_points; + if (pixbuf_cache->prev_job[i].selection_region) + selection->covered_region = gdk_region_copy (pixbuf_cache->prev_job[i].selection_region); + retval = g_list_append (retval, selection); + } + + page ++; + } + + page = pixbuf_cache->start_page; + for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) { + if (pixbuf_cache->job_list[i].selection_points.x1 != -1) { + selection = g_new0 (EvViewSelection, 1); + selection->page = page; + selection->rect = pixbuf_cache->job_list[i].selection_points; + if (pixbuf_cache->job_list[i].selection_region) + selection->covered_region = gdk_region_copy (pixbuf_cache->job_list[i].selection_region); + retval = g_list_append (retval, selection); + } + + page ++; + } + + for (i = 0; i < pixbuf_cache->preload_cache_size; i++) { + if (page >= ev_page_cache_get_n_pages (page_cache)) + break; + + if (pixbuf_cache->next_job[i].selection_points.x1 != -1) { + selection = g_new0 (EvViewSelection, 1); + selection->page = page; + selection->rect = pixbuf_cache->next_job[i].selection_points; + if (pixbuf_cache->next_job[i].selection_region) + selection->covered_region = gdk_region_copy (pixbuf_cache->next_job[i].selection_region); + retval = g_list_append (retval, selection); + } + + page ++; + } + + return retval; +} + +void +ev_pixbuf_cache_reload_page (EvPixbufCache *pixbuf_cache, + GdkRegion *region, + gint page, + gint rotation, + gdouble scale) +{ + CacheJobInfo *job_info; + EvPageCache *page_cache; + gint width, height; + + job_info = find_job_cache (pixbuf_cache, page); + if (job_info == NULL) + return; + + page_cache = ev_page_cache_get (pixbuf_cache->document); + ev_page_cache_get_size (page_cache, page, rotation, scale, + &width, &height); + + add_job (pixbuf_cache, job_info, page_cache, region, + width, height, page, rotation, scale, + EV_JOB_PRIORITY_URGENT); +} + + diff --git a/libview/ev-pixbuf-cache.h b/libview/ev-pixbuf-cache.h new file mode 100644 index 0000000..5e48f28 --- /dev/null +++ b/libview/ev-pixbuf-cache.h @@ -0,0 +1,90 @@ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2005 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +/* This File is basically an extention of EvView, and is out here just to keep + * ev-view.c from exploding. + */ + +#ifndef __EV_PIXBUF_CACHE_H__ +#define __EV_PIXBUF_CACHE_H__ + +#include <gtk/gtk.h> + +#include "ev-document.h" +#include "ev-selection.h" + +G_BEGIN_DECLS + +#define EV_TYPE_PIXBUF_CACHE (ev_pixbuf_cache_get_type ()) +#define EV_PIXBUF_CACHE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_PIXBUF_CACHE, EvPixbufCache)) +#define EV_IS_PIXBUF_CACHE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EV_TYPE_PIXBUF_CACHE)) + + + +/* The coordinates in the rect here are at scale == 1.0, so that we can ignore + * resizings. There is one per page, maximum. + */ +typedef struct { + int page; + EvRectangle rect; + GdkRegion *covered_region; + EvSelectionStyle style; +} EvViewSelection; + +typedef struct _EvPixbufCache EvPixbufCache; +typedef struct _EvPixbufCacheClass EvPixbufCacheClass; + +GType ev_pixbuf_cache_get_type (void) G_GNUC_CONST; +EvPixbufCache *ev_pixbuf_cache_new (GtkWidget *view, + EvDocument *document); +void ev_pixbuf_cache_set_page_range (EvPixbufCache *pixbuf_cache, + gint start_page, + gint end_page, + gint rotation, + gfloat scale, + GList *selection_list); +cairo_surface_t *ev_pixbuf_cache_get_surface (EvPixbufCache *pixbuf_cache, + gint page); +GList *ev_pixbuf_cache_get_link_mapping (EvPixbufCache *pixbuf_cache, + gint page); +GList *ev_pixbuf_cache_get_image_mapping (EvPixbufCache *pixbuf_cache, + gint page); +GdkRegion *ev_pixbuf_cache_get_text_mapping (EvPixbufCache *pixbuf_cache, + gint page); +GList *ev_pixbuf_cache_get_form_field_mapping (EvPixbufCache *pixbuf_cache, + gint page); +void ev_pixbuf_cache_clear (EvPixbufCache *pixbuf_cache); +void ev_pixbuf_cache_style_changed (EvPixbufCache *pixbuf_cache); +void ev_pixbuf_cache_reload_page (EvPixbufCache *pixbuf_cache, + GdkRegion *region, + gint page, + gint rotation, + gdouble scale); +/* Selection */ +cairo_surface_t *ev_pixbuf_cache_get_selection_surface (EvPixbufCache *pixbuf_cache, + gint page, + gfloat scale, + GdkRegion **region); +void ev_pixbuf_cache_set_selection_list (EvPixbufCache *pixbuf_cache, + GList *selection_list); +GList *ev_pixbuf_cache_get_selection_list (EvPixbufCache *pixbuf_cache); + +G_END_DECLS + +#endif /* __EV_PIXBUF_CACHE_H__ */ diff --git a/libview/ev-timeline.c b/libview/ev-timeline.c new file mode 100644 index 0000000..1545dff --- /dev/null +++ b/libview/ev-timeline.c @@ -0,0 +1,450 @@ +/* ev-timeline.c + * this file is part of evince, a gnome document viewer + * + * Copyright (C) 2007 Carlos Garnacho <carlos@imendio.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include <glib.h> +#include <math.h> +#include <gdk/gdk.h> +#include "ev-timeline.h" + +#define EV_TIMELINE_GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EV_TYPE_TIMELINE, EvTimelinePriv)) +#define MSECS_PER_SEC 1000 +#define FRAME_INTERVAL(nframes) (MSECS_PER_SEC / nframes) +#define DEFAULT_FPS 30 + +typedef struct EvTimelinePriv EvTimelinePriv; + +struct EvTimelinePriv { + guint duration; + guint fps; + guint source_id; + + GTimer *timer; + + guint loop : 1; +}; + +enum { + PROP_0, + PROP_FPS, + PROP_DURATION, + PROP_LOOP +}; + +enum { + STARTED, + PAUSED, + FINISHED, + FRAME, + LAST_SIGNAL +}; + +static guint signals [LAST_SIGNAL] = { 0, }; + + +G_DEFINE_TYPE (EvTimeline, ev_timeline, G_TYPE_OBJECT) + + +static void +ev_timeline_init (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + priv = EV_TIMELINE_GET_PRIV (timeline); + + priv->fps = DEFAULT_FPS; + priv->duration = 0; +} + +static void +ev_timeline_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + EvTimeline *timeline; + + timeline = EV_TIMELINE (object); + + switch (prop_id) { + case PROP_FPS: + ev_timeline_set_fps (timeline, g_value_get_uint (value)); + break; + case PROP_DURATION: + ev_timeline_set_duration (timeline, g_value_get_uint (value)); + break; + case PROP_LOOP: + ev_timeline_set_loop (timeline, g_value_get_boolean (value)); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static void +ev_timeline_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EvTimeline *timeline; + EvTimelinePriv *priv; + + timeline = EV_TIMELINE (object); + priv = EV_TIMELINE_GET_PRIV (timeline); + + switch (prop_id) { + case PROP_FPS: + g_value_set_uint (value, priv->fps); + break; + case PROP_DURATION: + g_value_set_uint (value, priv->duration); + break; + case PROP_LOOP: + g_value_set_boolean (value, priv->loop); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static void +ev_timeline_finalize (GObject *object) +{ + EvTimelinePriv *priv; + + priv = EV_TIMELINE_GET_PRIV (object); + + if (priv->source_id) { + g_source_remove (priv->source_id); + priv->source_id = 0; + } + + if (priv->timer) + g_timer_destroy (priv->timer); + + G_OBJECT_CLASS (ev_timeline_parent_class)->finalize (object); +} + +static gboolean +ev_timeline_run_frame (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + gdouble progress; + guint elapsed_time; + + GDK_THREADS_ENTER (); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + elapsed_time = (guint) (g_timer_elapsed (priv->timer, NULL) * 1000); + progress = (gdouble) elapsed_time / priv->duration; + progress = CLAMP (progress, 0., 1.); + + g_signal_emit (timeline, signals [FRAME], 0, progress); + + if (progress >= 1.0) { + if (!priv->loop) { + if (priv->source_id) { + g_source_remove (priv->source_id); + priv->source_id = 0; + } + + g_signal_emit (timeline, signals [FINISHED], 0); + return FALSE; + } else { + ev_timeline_rewind (timeline); + } + } + + GDK_THREADS_LEAVE (); + + return TRUE; +} + +static void +ev_timeline_real_start (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + priv = EV_TIMELINE_GET_PRIV (timeline); + + if (!priv->source_id) { + if (priv->timer) + g_timer_continue (priv->timer); + else + priv->timer = g_timer_new (); + + /* sanity check */ + g_assert (priv->fps > 0); + + g_signal_emit (timeline, signals [STARTED], 0); + + priv->source_id = g_timeout_add (FRAME_INTERVAL (priv->fps), + (GSourceFunc) ev_timeline_run_frame, + timeline); + } +} + +static void +ev_timeline_class_init (EvTimelineClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + + object_class->set_property = ev_timeline_set_property; + object_class->get_property = ev_timeline_get_property; + object_class->finalize = ev_timeline_finalize; + + class->start = ev_timeline_real_start; + + g_object_class_install_property (object_class, + PROP_FPS, + g_param_spec_uint ("fps", + "FPS", + "Frames per second for the timeline", + 1, + G_MAXUINT, + DEFAULT_FPS, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_DURATION, + g_param_spec_uint ("duration", + "Animation Duration", + "Animation Duration", + 0, + G_MAXUINT, + 0, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_LOOP, + g_param_spec_boolean ("loop", + "Loop", + "Whether the timeline loops or not", + FALSE, + G_PARAM_READWRITE)); + signals[STARTED] = + g_signal_new ("started", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvTimelineClass, started), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + signals[PAUSED] = + g_signal_new ("paused", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvTimelineClass, paused), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + signals[FINISHED] = + g_signal_new ("finished", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvTimelineClass, finished), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + signals[FRAME] = + g_signal_new ("frame", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EvTimelineClass, frame), + NULL, NULL, + g_cclosure_marshal_VOID__DOUBLE, + G_TYPE_NONE, 1, + G_TYPE_DOUBLE); + + g_type_class_add_private (class, sizeof (EvTimelinePriv)); +} + +EvTimeline * +ev_timeline_new (guint duration) +{ + return g_object_new (EV_TYPE_TIMELINE, + "duration", duration, + NULL); +} + +void +ev_timeline_start (EvTimeline *timeline) +{ + g_return_if_fail (EV_IS_TIMELINE (timeline)); + + EV_TIMELINE_GET_CLASS (timeline)->start (timeline); +} + +void +ev_timeline_pause (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + g_return_if_fail (EV_IS_TIMELINE (timeline)); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + if (priv->source_id) { + g_source_remove (priv->source_id); + priv->source_id = 0; + g_timer_stop (priv->timer); + g_signal_emit (timeline, signals [PAUSED], 0); + } +} + +void +ev_timeline_rewind (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + g_return_if_fail (EV_IS_TIMELINE (timeline)); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + /* destroy and re-create timer if neccesary */ + if (priv->timer) { + g_timer_destroy (priv->timer); + + if (ev_timeline_is_running (timeline)) + priv->timer = g_timer_new (); + else + priv->timer = NULL; + } +} + +gboolean +ev_timeline_is_running (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + g_return_val_if_fail (EV_IS_TIMELINE (timeline), FALSE); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + return (priv->source_id != 0); +} + +guint +ev_timeline_get_fps (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + g_return_val_if_fail (EV_IS_TIMELINE (timeline), 1); + + priv = EV_TIMELINE_GET_PRIV (timeline); + return priv->fps; +} + +void +ev_timeline_set_fps (EvTimeline *timeline, + guint fps) +{ + EvTimelinePriv *priv; + + g_return_if_fail (EV_IS_TIMELINE (timeline)); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + priv->fps = fps; + + if (ev_timeline_is_running (timeline)) { + g_source_remove (priv->source_id); + priv->source_id = g_timeout_add (FRAME_INTERVAL (priv->fps), + (GSourceFunc) ev_timeline_run_frame, + timeline); + } + + g_object_notify (G_OBJECT (timeline), "fps"); +} + +gboolean +ev_timeline_get_loop (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + g_return_val_if_fail (EV_IS_TIMELINE (timeline), FALSE); + + priv = EV_TIMELINE_GET_PRIV (timeline); + return priv->loop; +} + +void +ev_timeline_set_loop (EvTimeline *timeline, + gboolean loop) +{ + EvTimelinePriv *priv; + + g_return_if_fail (EV_IS_TIMELINE (timeline)); + + priv = EV_TIMELINE_GET_PRIV (timeline); + priv->loop = loop; + + g_object_notify (G_OBJECT (timeline), "loop"); +} + +void +ev_timeline_set_duration (EvTimeline *timeline, + guint duration) +{ + EvTimelinePriv *priv; + + g_return_if_fail (EV_IS_TIMELINE (timeline)); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + priv->duration = duration; + + g_object_notify (G_OBJECT (timeline), "duration"); +} + +guint +ev_timeline_get_duration (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + + g_return_val_if_fail (EV_IS_TIMELINE (timeline), 0); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + return priv->duration; +} + +gdouble +ev_timeline_get_progress (EvTimeline *timeline) +{ + EvTimelinePriv *priv; + gdouble progress; + guint elapsed_time; + + g_return_val_if_fail (EV_IS_TIMELINE (timeline), 0.0); + + priv = EV_TIMELINE_GET_PRIV (timeline); + + if (!priv->timer) + return 0.; + + elapsed_time = (guint) (g_timer_elapsed (priv->timer, NULL) * 1000); + progress = (gdouble) elapsed_time / priv->duration; + + return CLAMP (progress, 0., 1.); +} diff --git a/libview/ev-timeline.h b/libview/ev-timeline.h new file mode 100644 index 0000000..534e48a --- /dev/null +++ b/libview/ev-timeline.h @@ -0,0 +1,86 @@ +/* ev-timeline.h + * this file is part of evince, a gnome document viewer + * + * Copyright (C) 2007 Carlos Garnacho <carlos@imendio.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __EV_TIMELINE_H__ +#define __EV_TIMELINE_H__ + +#include <glib-object.h> + +G_BEGIN_DECLS + +#define EV_TYPE_TIMELINE (ev_timeline_get_type ()) +#define EV_TIMELINE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_TIMELINE, EvTimeline)) +#define EV_TIMELINE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_TIMELINE, EvTimelineClass)) +#define EV_IS_TIMELINE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EV_TYPE_TIMELINE)) +#define EV_IS_TIMELINE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_TIMELINE)) +#define EV_TIMELINE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_TIMELINE, EvTimelineClass)) + +typedef struct EvTimeline EvTimeline; +typedef struct EvTimelineClass EvTimelineClass; + +struct EvTimeline { + GObject parent_instance; +}; + +struct EvTimelineClass { + GObjectClass parent_class; + + /* vmethods */ + void (* start) (EvTimeline *timeline); + + /* signals */ + void (* started) (EvTimeline *timeline); + void (* finished) (EvTimeline *timeline); + void (* paused) (EvTimeline *timeline); + + void (* frame) (EvTimeline *timeline, + gdouble progress); +}; + + +GType ev_timeline_get_type (void) G_GNUC_CONST; + +EvTimeline *ev_timeline_new (guint duration); + +void ev_timeline_start (EvTimeline *timeline); +void ev_timeline_pause (EvTimeline *timeline); +void ev_timeline_rewind (EvTimeline *timeline); + +gboolean ev_timeline_is_running (EvTimeline *timeline); + +guint ev_timeline_get_fps (EvTimeline *timeline); +void ev_timeline_set_fps (EvTimeline *timeline, + guint fps); + +gboolean ev_timeline_get_loop (EvTimeline *timeline); +void ev_timeline_set_loop (EvTimeline *timeline, + gboolean loop); + +guint ev_timeline_get_duration (EvTimeline *timeline); +void ev_timeline_set_duration (EvTimeline *timeline, + guint duration); + +gdouble ev_timeline_get_progress (EvTimeline *timeline); + + +G_END_DECLS + +#endif /* __EV_TIMELINE_H__ */ diff --git a/libview/ev-transition-animation.c b/libview/ev-transition-animation.c new file mode 100644 index 0000000..148b4c7 --- /dev/null +++ b/libview/ev-transition-animation.c @@ -0,0 +1,682 @@ +/* ev-transition-animation.c + * this file is part of evince, a gnome document viewer + * + * Copyright (C) 2007 Carlos Garnacho <carlos@imendio.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include <cairo.h> +#include <gdk/gdk.h> +#include "ev-transition-animation.h" +#include "ev-timeline.h" + +#define EV_TRANSITION_ANIMATION_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EV_TYPE_TRANSITION_ANIMATION, EvTransitionAnimationPriv)) +#define N_BLINDS 6 + +typedef struct EvTransitionAnimationPriv EvTransitionAnimationPriv; + +struct EvTransitionAnimationPriv { + EvTransitionEffect *effect; + cairo_surface_t *origin_surface; + cairo_surface_t *dest_surface; +}; + +enum { + PROP_0, + PROP_EFFECT, + PROP_ORIGIN_SURFACE, + PROP_DEST_SURFACE +}; + + +G_DEFINE_TYPE (EvTransitionAnimation, ev_transition_animation, EV_TYPE_TIMELINE) + + +static void +ev_transition_animation_init (EvTransitionAnimation *animation) +{ +} + +static void +ev_transition_animation_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + EvTransitionAnimationPriv *priv; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_EFFECT: + if (priv->effect) + g_object_unref (priv->effect); + + priv->effect = g_value_dup_object (value); + break; + case PROP_ORIGIN_SURFACE: + ev_transition_animation_set_origin_surface (EV_TRANSITION_ANIMATION (object), + g_value_get_pointer (value)); + break; + case PROP_DEST_SURFACE: + ev_transition_animation_set_dest_surface (EV_TRANSITION_ANIMATION (object), + g_value_get_pointer (value)); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static void +ev_transition_animation_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EvTransitionAnimationPriv *priv; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (object); + + switch (prop_id) { + case PROP_EFFECT: + g_value_set_object (value, priv->effect); + break; + case PROP_ORIGIN_SURFACE: + g_value_set_pointer (value, priv->origin_surface); + break; + case PROP_DEST_SURFACE: + g_value_set_pointer (value, priv->dest_surface); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static void +ev_transition_animation_finalize (GObject *object) +{ + EvTransitionAnimationPriv *priv; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (object); + + if (priv->effect) + g_object_unref (priv->effect); + + if (priv->origin_surface) + cairo_surface_destroy (priv->origin_surface); + + if (priv->dest_surface) + cairo_surface_destroy (priv->dest_surface); + + G_OBJECT_CLASS (ev_transition_animation_parent_class)->finalize (object); +} + +static GObject * +ev_transition_animation_constructor (GType type, + guint n_construct_properties, + GObjectConstructParam *construct_params) +{ + GObject *object; + EvTransitionAnimationPriv *priv; + EvTransitionEffect *effect; + gint duration; + + object = G_OBJECT_CLASS (ev_transition_animation_parent_class)->constructor (type, + n_construct_properties, + construct_params); + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (object); + effect = priv->effect; + + g_object_get (effect, "duration", &duration, NULL); + ev_timeline_set_duration (EV_TIMELINE (object), duration * 1000); + + return object; +} + +static void +ev_transition_animation_class_init (EvTransitionAnimationClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->set_property = ev_transition_animation_set_property; + object_class->get_property = ev_transition_animation_get_property; + object_class->finalize = ev_transition_animation_finalize; + object_class->constructor = ev_transition_animation_constructor; + + g_object_class_install_property (object_class, + PROP_EFFECT, + g_param_spec_object ("effect", + "Effect", + "Transition effect description", + EV_TYPE_TRANSITION_EFFECT, + G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_ORIGIN_SURFACE, + g_param_spec_pointer ("origin-surface", + "Origin surface", + "Cairo surface from which the animation will happen", + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_DEST_SURFACE, + g_param_spec_pointer ("dest-surface", + "Destination surface", + "Cairo surface to which the animation will happen", + G_PARAM_READWRITE)); + + g_type_class_add_private (klass, sizeof (EvTransitionAnimationPriv)); +} + +static void +paint_surface (cairo_t *cr, + cairo_surface_t *surface, + gdouble x_offset, + gdouble y_offset, + gdouble alpha, + GdkRectangle page_area) +{ + gint width, height; + + gdk_cairo_rectangle (cr, &page_area); + cairo_clip (cr); + + width = cairo_image_surface_get_width (surface); + height = cairo_image_surface_get_height (surface); + + cairo_save (cr); + + if (width != page_area.width || height != page_area.height) { + cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_FAST); + cairo_scale (cr, + (gdouble) page_area.width / width, + (gdouble) page_area.height / height); + } + + cairo_surface_set_device_offset (surface, x_offset, y_offset); + cairo_set_source_surface (cr, surface, 0, 0); + + if (alpha == 0.) + cairo_paint (cr); + else + cairo_paint_with_alpha (cr, alpha); + + cairo_restore (cr); +} + +/* animations */ +static void +ev_transition_animation_split (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + EvTransitionEffectAlignment alignment; + EvTransitionEffectDirection direction; + gint width, height; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + width = page_area.width; + height = page_area.height; + + g_object_get (effect, + "alignment", &alignment, + "direction", &direction, + NULL); + + if (direction == EV_TRANSITION_DIRECTION_INWARD) { + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + + if (alignment == EV_TRANSITION_ALIGNMENT_HORIZONTAL) { + cairo_rectangle (cr, + 0, + height * progress / 2, + width, + height * (1 - progress)); + } else { + cairo_rectangle (cr, + width * progress / 2, + 0, + width * (1 - progress), + height); + } + + cairo_clip (cr); + + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + } else { + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + + if (alignment == EV_TRANSITION_ALIGNMENT_HORIZONTAL) { + cairo_rectangle (cr, + 0, + (height / 2) - (height * progress / 2), + width, + height * progress); + } else { + cairo_rectangle (cr, + (width / 2) - (width * progress / 2), + 0, + width * progress, + height); + } + + cairo_clip (cr); + + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + } +} + +static void +ev_transition_animation_blinds (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + EvTransitionEffectAlignment alignment; + gint width, height, i; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + width = page_area.width; + height = page_area.height; + + g_object_get (effect, + "alignment", &alignment, + NULL); + + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + + for (i = 0; i < N_BLINDS; i++) { + cairo_save (cr); + + if (alignment == EV_TRANSITION_ALIGNMENT_HORIZONTAL) { + cairo_rectangle (cr, + 0, + height / N_BLINDS * i, + width, + height / N_BLINDS * progress); + } else { + cairo_rectangle (cr, + width / N_BLINDS * i, + 0, + width / N_BLINDS * progress, + height); + } + + cairo_clip (cr); + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + cairo_restore (cr); + } +} + +static void +ev_transition_animation_box (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + EvTransitionEffectDirection direction; + gint width, height; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + width = page_area.width; + height = page_area.height; + + g_object_get (effect, + "direction", &direction, + NULL); + + if (direction == EV_TRANSITION_DIRECTION_INWARD) { + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + + cairo_rectangle (cr, + width * progress / 2, + height * progress / 2, + width * (1 - progress), + height * (1 - progress)); + cairo_clip (cr); + + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + } else { + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + + cairo_rectangle (cr, + (width / 2) - (width * progress / 2), + (height / 2) - (height * progress / 2), + width * progress, + height * progress); + cairo_clip (cr); + + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + } +} + +static void +ev_transition_animation_wipe (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + gint width, height; + gint angle; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + width = page_area.width; + height = page_area.height; + + g_object_get (effect, + "angle", &angle, + NULL); + + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + + if (angle == 0) { + /* left to right */ + cairo_rectangle (cr, + 0, 0, + width * progress, + height); + } else if (angle <= 90) { + /* bottom to top */ + cairo_rectangle (cr, + 0, + height * (1 - progress), + width, + height * progress); + } else if (angle <= 180) { + /* right to left */ + cairo_rectangle (cr, + width * (1 - progress), + 0, + width * progress, + height); + } else if (angle <= 270) { + /* top to bottom */ + cairo_rectangle (cr, + 0, 0, + width, + height * progress); + } + + cairo_clip (cr); + + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); +} + +static void +ev_transition_animation_dissolve (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + paint_surface (cr, priv->origin_surface, 0, 0, 1 - progress, page_area); +} + +static void +ev_transition_animation_push (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + gint width, height; + gint angle; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + width = page_area.width; + height = page_area.height; + + g_object_get (effect, + "angle", &angle, + NULL); + + if (angle == 0) { + /* left to right */ + paint_surface (cr, priv->origin_surface, - (width * progress), 0, 0, page_area); + paint_surface (cr, priv->dest_surface, width * (1 - progress), 0, 0, page_area); + } else { + /* top to bottom */ + paint_surface (cr, priv->origin_surface, 0, - (height * progress), 0, page_area); + paint_surface (cr, priv->dest_surface, 0, height * (1 - progress), 0, page_area); + } +} + +static void +ev_transition_animation_cover (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + gint width, height; + gint angle; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + width = page_area.width; + height = page_area.height; + + g_object_get (effect, + "angle", &angle, + NULL); + + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + + if (angle == 0) { + /* left to right */ + paint_surface (cr, priv->dest_surface, width * (1 - progress), 0, 0, page_area); + } else { + /* top to bottom */ + paint_surface (cr, priv->dest_surface, 0, height * (1 - progress), 0, page_area); + } +} + +static void +ev_transition_animation_uncover (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + gint width, height; + gint angle; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + width = page_area.width; + height = page_area.height; + + g_object_get (effect, + "angle", &angle, + NULL); + + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + + if (angle == 0) { + /* left to right */ + paint_surface (cr, priv->origin_surface, - (width * progress), 0, 0, page_area); + } else { + /* top to bottom */ + paint_surface (cr, priv->origin_surface, 0, - (height * progress), 0, page_area); + } +} + +static void +ev_transition_animation_fade (cairo_t *cr, + EvTransitionAnimation *animation, + EvTransitionEffect *effect, + gdouble progress, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + paint_surface (cr, priv->dest_surface, 0, 0, progress, page_area); +} + +void +ev_transition_animation_paint (EvTransitionAnimation *animation, + cairo_t *cr, + GdkRectangle page_area) +{ + EvTransitionAnimationPriv *priv; + EvTransitionEffectType type; + gdouble progress; + + g_return_if_fail (EV_IS_TRANSITION_ANIMATION (animation)); + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + g_object_get (priv->effect, "type", &type, NULL); + progress = ev_timeline_get_progress (EV_TIMELINE (animation)); + + if (!priv->dest_surface) { + /* animation is still not ready, paint the origin surface */ + paint_surface (cr, priv->origin_surface, 0, 0, 0, page_area); + return; + } + + switch (type) { + case EV_TRANSITION_EFFECT_REPLACE: + /* just paint the destination slide */ + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + break; + case EV_TRANSITION_EFFECT_SPLIT: + ev_transition_animation_split (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_BLINDS: + ev_transition_animation_blinds (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_BOX: + ev_transition_animation_box (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_WIPE: + ev_transition_animation_wipe (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_DISSOLVE: + ev_transition_animation_dissolve (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_PUSH: + ev_transition_animation_push (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_COVER: + ev_transition_animation_cover (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_UNCOVER: + ev_transition_animation_uncover (cr, animation, priv->effect, progress, page_area); + break; + case EV_TRANSITION_EFFECT_FADE: + ev_transition_animation_fade (cr, animation, priv->effect, progress, page_area); + break; + default: { + GEnumValue *enum_value; + + enum_value = g_enum_get_value (g_type_class_peek (EV_TYPE_TRANSITION_EFFECT_TYPE), type); + + g_warning ("Unimplemented transition animation: '%s', " + "please post a bug report in Evince bugzilla " + "(http://bugzilla.gnome.org) with a testcase.", + enum_value->value_nick); + + /* just paint the destination slide */ + paint_surface (cr, priv->dest_surface, 0, 0, 0, page_area); + } + } +} + +EvTransitionAnimation * +ev_transition_animation_new (EvTransitionEffect *effect) +{ + g_return_val_if_fail (EV_IS_TRANSITION_EFFECT (effect), NULL); + + return g_object_new (EV_TYPE_TRANSITION_ANIMATION, + "effect", effect, + NULL); +} + +void +ev_transition_animation_set_origin_surface (EvTransitionAnimation *animation, + cairo_surface_t *origin_surface) +{ + EvTransitionAnimationPriv *priv; + cairo_surface_t *surface; + + g_return_if_fail (EV_IS_TRANSITION_ANIMATION (animation)); + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + + surface = cairo_surface_reference (origin_surface); + + if (priv->origin_surface) + cairo_surface_destroy (priv->origin_surface); + + priv->origin_surface = surface; + g_object_notify (G_OBJECT (animation), "origin-surface"); + + if (priv->origin_surface && priv->dest_surface) + ev_timeline_start (EV_TIMELINE (animation)); +} + +void +ev_transition_animation_set_dest_surface (EvTransitionAnimation *animation, + cairo_surface_t *dest_surface) +{ + EvTransitionAnimationPriv *priv; + cairo_surface_t *surface; + + g_return_if_fail (EV_IS_TRANSITION_ANIMATION (animation)); + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + + surface = cairo_surface_reference (dest_surface); + + if (priv->dest_surface) + cairo_surface_destroy (priv->dest_surface); + + priv->dest_surface = surface; + g_object_notify (G_OBJECT (animation), "dest-surface"); + + if (priv->origin_surface && priv->dest_surface) + ev_timeline_start (EV_TIMELINE (animation)); +} + +gboolean +ev_transition_animation_ready (EvTransitionAnimation *animation) +{ + EvTransitionAnimationPriv *priv; + + g_return_val_if_fail (EV_IS_TRANSITION_ANIMATION (animation), FALSE); + + priv = EV_TRANSITION_ANIMATION_GET_PRIVATE (animation); + + return (priv->origin_surface && priv->dest_surface); +} diff --git a/libview/ev-transition-animation.h b/libview/ev-transition-animation.h new file mode 100644 index 0000000..522caf2 --- /dev/null +++ b/libview/ev-transition-animation.h @@ -0,0 +1,68 @@ +/* ev-transition-animation.h + * this file is part of evince, a gnome document viewer + * + * Copyright (C) 2007 Carlos Garnacho <carlos@imendio.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __EV_TRANSITION_ANIMATION_H__ +#define __EV_TRANSITION_ANIMATION_H__ + +#include "ev-timeline.h" +#include "ev-transition-effect.h" + +G_BEGIN_DECLS + +#define EV_TYPE_TRANSITION_ANIMATION (ev_transition_animation_get_type ()) +#define EV_TRANSITION_ANIMATION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_TRANSITION_ANIMATION, EvTransitionAnimation)) +#define EV_TRANSITION_ANIMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_TRANSITION_ANIMATION, EvTransitionAnimationClass)) +#define EV_IS_TRANSITION_ANIMATION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EV_TYPE_TRANSITION_ANIMATION)) +#define EV_IS_TRANSITION_ANIMATION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_TRANSITION_ANIMATION)) +#define EV_TRANSITION_ANIMATION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_TRANSITION_ANIMATION, EvTransitionAnimationClass)) + +typedef struct EvTransitionAnimation EvTransitionAnimation; +typedef struct EvTransitionAnimationClass EvTransitionAnimationClass; + +struct EvTransitionAnimation { + EvTimeline parent_instance; +}; + +struct EvTransitionAnimationClass { + EvTimelineClass parent_class; +}; + + +GType ev_transition_animation_get_type (void) G_GNUC_CONST; + +EvTransitionAnimation * ev_transition_animation_new (EvTransitionEffect *effect); + +void ev_transition_animation_set_origin_surface (EvTransitionAnimation *animation, + cairo_surface_t *origin_surface); +void ev_transition_animation_set_dest_surface (EvTransitionAnimation *animation, + cairo_surface_t *origin_surface); +gint ev_transition_animation_get_page_from (EvTransitionAnimation *animation); +gint ev_transition_animation_get_page_to (EvTransitionAnimation *animation); + +void ev_transition_animation_paint (EvTransitionAnimation *animation, + cairo_t *cr, + GdkRectangle page_area); +gboolean ev_transition_animation_ready (EvTransitionAnimation *animation); + + +G_END_DECLS + +#endif /* __EV_TRANSITION_ANIMATION_H__ */ diff --git a/libview/ev-view-accessible.c b/libview/ev-view-accessible.c new file mode 100644 index 0000000..3bf28d9 --- /dev/null +++ b/libview/ev-view-accessible.c @@ -0,0 +1,563 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2004 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <config.h> +#include <glib/gi18n.h> + +#include "ev-view-accessible.h" +#include "ev-view-private.h" + +#define EV_TYPE_VIEW_ACCESSIBLE (ev_view_accessible_get_type ()) +#define EV_VIEW_ACCESSIBLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_VIEW_ACCESSIBLE, EvViewAccessible)) +#define EV_IS_VIEW_ACCESSIBLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EV_TYPE_VIEW_ACCESSIBLE)) + +static GType ev_view_accessible_get_type (void); + +enum { + ACTION_SCROLL_UP, + ACTION_SCROLL_DOWN, + LAST_ACTION +}; + +static const gchar *const ev_view_accessible_action_names[] = +{ + N_("Scroll Up"), + N_("Scroll Down"), + NULL +}; + +static const gchar *const ev_view_accessible_action_descriptions[] = +{ + N_("Scroll View Up"), + N_("Scroll View Down"), + NULL +}; + +typedef struct { + /* Action */ + gchar *action_descriptions[LAST_ACTION]; + guint action_idle_handler; + GtkScrollType idle_scroll; +} EvViewAccessiblePriv; + +typedef GtkAccessibleClass EvViewAccessibleClass; + +#define EV_VIEW_ACCESSIBLE_GET_PRIVATE(inst) (G_TYPE_INSTANCE_GET_PRIVATE ((inst), EV_TYPE_VIEW_ACCESSIBLE, EvViewAccessiblePriv)) + +static void +ev_view_accessible_finalize (GObject *object) +{ + EvViewAccessiblePriv *priv = EV_VIEW_ACCESSIBLE_GET_PRIVATE (object); + int i; + + if (priv->action_idle_handler) + g_source_remove (priv->action_idle_handler); + for (i = 0; i < LAST_ACTION; i++) + g_free (priv->action_descriptions [i]); +} + +static void ev_view_accessible_class_init (EvViewAccessibleClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->finalize = ev_view_accessible_finalize; + + g_type_class_add_private (klass, sizeof (EvViewAccessiblePriv)); +} + +static gchar* +ev_view_accessible_get_text (AtkText *text, + gint start_pos, + gint end_pos) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return NULL; + + return NULL; +} + +static gunichar +ev_view_accessible_get_character_at_offset (AtkText *text, + gint offset) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return '\0'; + + return '\0'; +} + +static gchar* +ev_view_accessible_get_text_before_offset (AtkText *text, + gint offset, + AtkTextBoundary boundary_type, + gint *start_offset, + gint *end_offset) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return NULL; + + return NULL; +} + +static gchar* +ev_view_accessible_get_text_at_offset (AtkText *text, + gint offset, + AtkTextBoundary boundary_type, + gint *start_offset, + gint *end_offset) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return NULL; + + return NULL; +} + +static gchar* +ev_view_accessible_get_text_after_offset (AtkText *text, + gint offset, + AtkTextBoundary boundary_type, + gint *start_offset, + gint *end_offset) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return NULL; + + return NULL; +} + +static gint +ev_view_accessible_get_character_count (AtkText *text) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return 0; + + return 0; +} + +static gint +ev_view_accessible_get_caret_offset (AtkText *text) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return 0; + + return 0; +} + +static gboolean +ev_view_accessible_set_caret_offset (AtkText *text, gint offset) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return FALSE; + + return FALSE; +} + +static AtkAttributeSet* +ev_view_accessible_get_run_attributes (AtkText *text, + gint offset, + gint *start_offset, + gint *end_offset) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return NULL; + + return NULL; +} + +static AtkAttributeSet* +ev_view_accessible_get_default_attributes (AtkText *text) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return NULL; + + return NULL; +} + +static void +ev_view_accessible_get_character_extents (AtkText *text, + gint offset, + gint *x, + gint *y, + gint *width, + gint *height, + AtkCoordType coords) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return; + + return; +} + +static gint +ev_view_accessible_get_offset_at_point (AtkText *text, + gint x, + gint y, + AtkCoordType coords) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return -1; + + return -1; +} + +static gint +ev_view_accessible_get_n_selections (AtkText *text) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return -1; + + return -1; +} + +static gchar* +ev_view_accessible_get_selection (AtkText *text, + gint selection_num, + gint *start_pos, + gint *end_pos) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return NULL; + + return NULL; +} + +static gboolean +ev_view_accessible_add_selection (AtkText *text, + gint start_pos, + gint end_pos) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return FALSE; + + return FALSE; +} + +static gboolean +ev_view_accessible_remove_selection (AtkText *text, + gint selection_num) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return FALSE; + + return FALSE; +} + +static gboolean +ev_view_accessible_set_selection (AtkText *text, + gint selection_num, + gint start_pos, + gint end_pos) +{ + GtkWidget *widget; + + widget = GTK_ACCESSIBLE (text)->widget; + if (widget == NULL) + /* State is defunct */ + return FALSE; + + return FALSE; +} + + +static void ev_view_accessible_text_iface_init (AtkTextIface * iface) +{ + g_return_if_fail (iface != NULL); + + iface->get_text = ev_view_accessible_get_text; + iface->get_character_at_offset = ev_view_accessible_get_character_at_offset; + iface->get_text_before_offset = ev_view_accessible_get_text_before_offset; + iface->get_text_at_offset = ev_view_accessible_get_text_at_offset; + iface->get_text_after_offset = ev_view_accessible_get_text_after_offset; + iface->get_caret_offset = ev_view_accessible_get_caret_offset; + iface->set_caret_offset = ev_view_accessible_set_caret_offset; + iface->get_character_count = ev_view_accessible_get_character_count; + iface->get_n_selections = ev_view_accessible_get_n_selections; + iface->get_selection = ev_view_accessible_get_selection; + iface->add_selection = ev_view_accessible_add_selection; + iface->remove_selection = ev_view_accessible_remove_selection; + iface->set_selection = ev_view_accessible_set_selection; + iface->get_run_attributes = ev_view_accessible_get_run_attributes; + iface->get_default_attributes = ev_view_accessible_get_default_attributes; + iface->get_character_extents = ev_view_accessible_get_character_extents; + iface->get_offset_at_point = ev_view_accessible_get_offset_at_point; + return; +} + +static gboolean +ev_view_accessible_idle_do_action (gpointer data) +{ + EvViewAccessiblePriv* priv = EV_VIEW_ACCESSIBLE_GET_PRIVATE (data); + + ev_view_scroll (EV_VIEW (GTK_ACCESSIBLE (data)->widget), + priv->idle_scroll, + FALSE); + priv->action_idle_handler = 0; + return FALSE; +} + +static gboolean +ev_view_accessible_action_do_action (AtkAction *action, + gint i) +{ + EvViewAccessiblePriv* priv = EV_VIEW_ACCESSIBLE_GET_PRIVATE (action); + + if (GTK_ACCESSIBLE (action)->widget == NULL) + return FALSE; + + if (priv->action_idle_handler) + return FALSE; + + switch (i) { + case ACTION_SCROLL_UP: + priv->idle_scroll = GTK_SCROLL_PAGE_BACKWARD; + break; + case ACTION_SCROLL_DOWN: + priv->idle_scroll = GTK_SCROLL_PAGE_FORWARD; + break; + default: + return FALSE; + } + priv->action_idle_handler = g_idle_add (ev_view_accessible_idle_do_action, + action); + return TRUE; +} + +static gint +ev_view_accessible_action_get_n_actions (AtkAction *action) +{ + return LAST_ACTION; +} + +static const gchar * +ev_view_accessible_action_get_description (AtkAction *action, + gint i) +{ + EvViewAccessiblePriv* priv = EV_VIEW_ACCESSIBLE_GET_PRIVATE (action); + + if (i < 0 || i >= LAST_ACTION) + return NULL; + + if (priv->action_descriptions[i]) + return priv->action_descriptions[i]; + else + return ev_view_accessible_action_descriptions[i]; +} + +static const gchar * +ev_view_accessible_action_get_name (AtkAction *action, + gint i) +{ + if (i < 0 || i >= LAST_ACTION) + return NULL; + + return ev_view_accessible_action_names[i]; +} + +static gboolean +ev_view_accessible_action_set_description (AtkAction *action, + gint i, + const gchar *description) +{ + EvViewAccessiblePriv* priv = EV_VIEW_ACCESSIBLE_GET_PRIVATE (action); + gchar *old_description; + + if (i < 0 || i >= LAST_ACTION) + return FALSE; + + old_description = priv->action_descriptions[i]; + priv->action_descriptions[i] = g_strdup (description); + g_free (old_description); + + return TRUE; +} + +static void ev_view_accessible_action_iface_init (AtkActionIface * iface) +{ + iface->do_action = ev_view_accessible_action_do_action; + iface->get_n_actions = ev_view_accessible_action_get_n_actions; + iface->get_description = ev_view_accessible_action_get_description; + iface->get_name = ev_view_accessible_action_get_name; + iface->set_description = ev_view_accessible_action_set_description; +} + +GType ev_view_accessible_get_type (void) +{ + static GType type = 0; + + if (G_UNLIKELY (type == 0)) { + GTypeInfo tinfo = { + 0, /* class size */ + (GBaseInitFunc) NULL, /* base init */ + (GBaseFinalizeFunc) NULL, /* base finalize */ + (GClassInitFunc) ev_view_accessible_class_init, /* class init */ + (GClassFinalizeFunc) NULL, /* class finalize */ + NULL, /* class data */ + 0, /* instance size */ + 0, /* nb preallocs */ + (GInstanceInitFunc) NULL, /* instance init */ + NULL /* value table */ + }; + + const GInterfaceInfo atk_text_info = { + (GInterfaceInitFunc) + ev_view_accessible_text_iface_init, + (GInterfaceFinalizeFunc) NULL, + NULL + }; + + const GInterfaceInfo atk_action_info = { + (GInterfaceInitFunc) + ev_view_accessible_action_iface_init, + (GInterfaceFinalizeFunc) NULL, + NULL + }; + /* + * Figure out the size of the class and instance + * we are deriving from + */ + AtkObjectFactory *factory; + GType derived_type; + GTypeQuery query; + GType derived_atk_type; + + derived_type = g_type_parent (EV_TYPE_VIEW); + factory = atk_registry_get_factory (atk_get_default_registry (), + derived_type); + derived_atk_type = atk_object_factory_get_accessible_type (factory); + + g_type_query (derived_atk_type, &query); + tinfo.class_size = query.class_size; + tinfo.instance_size = query.instance_size; + + type = g_type_register_static (derived_atk_type, "EvViewAccessible", + &tinfo, 0); + g_type_add_interface_static (type, ATK_TYPE_TEXT, + &atk_text_info); + g_type_add_interface_static (type, ATK_TYPE_ACTION, + &atk_action_info); + } + + return type; +} + +static AtkObject *ev_view_accessible_new(GObject * obj) +{ + AtkObject *accessible; + + g_return_val_if_fail(EV_IS_VIEW (obj), NULL); + + accessible = g_object_new (ev_view_accessible_get_type (), NULL); + atk_object_initialize (accessible, obj); + + atk_object_set_name (ATK_OBJECT (accessible), _("Document View")); + atk_object_set_role (ATK_OBJECT (accessible), ATK_ROLE_UNKNOWN); + + return accessible; +} + +typedef AtkObjectFactory EvViewAccessibleFactory; +typedef AtkObjectFactoryClass EvViewAccessibleFactoryClass; + +static void ev_view_accessible_factory_init (EvViewAccessibleFactory *factory) +{ +} + +static GType ev_view_accessible_factory_get_accessible_type(void) +{ + return ev_view_accessible_get_type(); +} + +static AtkObject *ev_view_accessible_factory_create_accessible (GObject * obj) +{ + return ev_view_accessible_new(obj); +} + +static void ev_view_accessible_factory_class_init (AtkObjectFactoryClass * klass) +{ + klass->create_accessible = ev_view_accessible_factory_create_accessible; + klass->get_accessible_type = + ev_view_accessible_factory_get_accessible_type; +} + +G_DEFINE_TYPE (EvViewAccessibleFactory, ev_view_accessible_factory, ATK_TYPE_OBJECT_FACTORY) diff --git a/libview/ev-view-accessible.h b/libview/ev-view-accessible.h new file mode 100644 index 0000000..c29c471 --- /dev/null +++ b/libview/ev-view-accessible.h @@ -0,0 +1,29 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2004 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef __EV_VIEW_ACCESSIBLE_H__ +#define __EV_VIEW_ACCESSIBLE_H__ + +#include "ev-view.h" + +GType ev_view_accessible_factory_get_type (void); + +#endif /* __EV_VIEW_ACCESSIBLE_H__ */ + diff --git a/libview/ev-view-marshal.list b/libview/ev-view-marshal.list new file mode 100644 index 0000000..4c54a3f --- /dev/null +++ b/libview/ev-view-marshal.list @@ -0,0 +1 @@ +VOID:ENUM,BOOLEAN diff --git a/libview/ev-view-private.h b/libview/ev-view-private.h new file mode 100644 index 0000000..c894440 --- /dev/null +++ b/libview/ev-view-private.h @@ -0,0 +1,195 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2004 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef __EV_VIEW_PRIVATE_H__ +#define __EV_VIEW_PRIVATE_H__ + +#include "ev-view.h" +#include "ev-pixbuf-cache.h" +#include "ev-page-cache.h" +#include "ev-jobs.h" +#include "ev-image.h" +#include "ev-form-field.h" +#include "ev-selection.h" +#include "ev-transition-animation.h" + +#define DRAG_HISTORY 10 + +/* Information for middle clicking and moving around the doc */ +typedef struct { + gboolean in_drag; + GdkPoint start; + gdouble hadj; + gdouble vadj; + guint drag_timeout_id; + guint release_timeout_id; + GdkPoint buffer[DRAG_HISTORY]; + GdkPoint momentum; +} DragInfo; + +/* Autoscrolling */ +typedef struct { + gboolean autoscrolling; + guint last_y; + guint start_y; + guint timeout_id; +} AutoScrollInfo; + +/* Information for handling selection */ +typedef struct { + gboolean in_drag; + GdkPoint start; + gboolean in_selection; + GList *selections; + EvSelectionStyle style; +} SelectionInfo; + +/* Information for handling images DND */ +typedef struct { + gboolean in_drag; + GdkPoint start; + EvImage *image; +} ImageDNDInfo; + +typedef enum { + SCROLL_TO_KEEP_POSITION, + SCROLL_TO_PAGE_POSITION, + SCROLL_TO_CENTER, + SCROLL_TO_FIND_LOCATION, +} PendingScroll; + +typedef enum { + EV_VIEW_CURSOR_NORMAL, + EV_VIEW_CURSOR_IBEAM, + EV_VIEW_CURSOR_LINK, + EV_VIEW_CURSOR_WAIT, + EV_VIEW_CURSOR_HIDDEN, + EV_VIEW_CURSOR_DRAG, + EV_VIEW_CURSOR_AUTOSCROLL, +} EvViewCursor; + +typedef enum { + EV_PRESENTATION_NORMAL, + EV_PRESENTATION_BLACK, + EV_PRESENTATION_WHITE, + EV_PRESENTATION_END +} EvPresentationState; + +struct _EvView { + GtkLayout layout; + + EvDocument *document; + + /* Find */ + GList **find_pages; + gint find_result; + gboolean jump_to_find_result; + gboolean highlight_find_results; + + EvPageCache *page_cache; + EvPixbufCache *pixbuf_cache; + EvViewCursor cursor; + EvJobRender *current_job; + + /* Scrolling */ + GtkAdjustment *hadjustment; + GtkAdjustment *vadjustment; + + gint scroll_x; + gint scroll_y; + + PendingScroll pending_scroll; + gboolean pending_resize; + EvPoint pending_point; + + /* Current geometry */ + + gint start_page; + gint end_page; + gint current_page; + + gint rotation; + gdouble scale; + gint spacing; + gdouble dpi; + gdouble max_scale; + gdouble min_scale; + + gboolean loading; + gboolean continuous; + gboolean dual_page; + gboolean fullscreen; + gboolean presentation; + EvSizingMode sizing_mode; + cairo_surface_t *loading_text; + + /* Presentation */ + EvPresentationState presentation_state; + EvSizingMode sizing_mode_saved; + double scale_saved; + guint trans_timeout_id; + + /* Common for button press handling */ + int pressed_button; + + /* Information for middle clicking and dragging around. */ + DragInfo drag_info; + + /* Autoscrolling */ + AutoScrollInfo scroll_info; + + /* Selection */ + GdkPoint motion; + guint selection_update_id; + guint selection_scroll_id; + + EvViewSelectionMode selection_mode; + SelectionInfo selection_info; + + /* Copy link address selection */ + EvLinkAction *link_selected; + + /* Image DND */ + ImageDNDInfo image_dnd_info; + + /* Goto Popup */ + GtkWidget *goto_window; + GtkWidget *goto_entry; + + EvTransitionAnimation *animation; +}; + +struct _EvViewClass { + GtkLayoutClass parent_class; + + void (*binding_activated) (EvView *view, + GtkScrollType scroll, + gboolean horizontal); + void (*zoom_invalid) (EvView *view); + void (*handle_link) (EvView *view, + EvLink *link); + void (*external_link) (EvView *view, + EvLinkAction *action); + void (*popup_menu) (EvView *view, + EvLink *link); +}; + +#endif /* __EV_VIEW_PRIVATE_H__ */ + diff --git a/libview/ev-view.c b/libview/ev-view.c new file mode 100644 index 0000000..e6fb3ce --- /dev/null +++ b/libview/ev-view.c @@ -0,0 +1,5891 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2004 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#include "config.h" + +#include <stdlib.h> +#include <math.h> +#include <string.h> + +#include <glib/gi18n.h> +#include <gtk/gtk.h> +#include <gdk/gdkkeysyms.h> + +#include "ev-document-forms.h" +#include "ev-document-images.h" +#include "ev-document-links.h" +#include "ev-document-misc.h" +#include "ev-document-transition.h" +#include "ev-page-cache.h" +#include "ev-pixbuf-cache.h" +#include "ev-transition-animation.h" +#include "ev-view-marshal.h" +#include "ev-view.h" +#include "ev-view-accessible.h" +#include "ev-view-private.h" + +#define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass)) +#define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW)) +#define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass)) + +enum { + PROP_0, + PROP_CONTINUOUS, + PROP_DUAL_PAGE, + PROP_FULLSCREEN, + PROP_PRESENTATION, + PROP_SIZING_MODE, + PROP_ZOOM, + PROP_ROTATION, + PROP_HAS_SELECTION, +}; + +enum { + SIGNAL_BINDING_ACTIVATED, + SIGNAL_ZOOM_INVALID, + SIGNAL_HANDLE_LINK, + SIGNAL_EXTERNAL_LINK, + SIGNAL_POPUP_MENU, + N_SIGNALS, +}; + +enum { + TARGET_DND_URI, + TARGET_DND_TEXT, + TARGET_DND_IMAGE +}; + +enum { + TARGET_STRING, + TARGET_TEXT, + TARGET_COMPOUND_TEXT, + TARGET_UTF8_STRING, + TARGET_TEXT_BUFFER_CONTENTS +}; + +static const GtkTargetEntry clipboard_targets[] = { + { "STRING", 0, TARGET_STRING }, + { "TEXT", 0, TARGET_TEXT }, + { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT }, + { "UTF8_STRING", 0, TARGET_UTF8_STRING }, +}; + +static guint signals[N_SIGNALS]; + +typedef enum { + EV_VIEW_FIND_NEXT, + EV_VIEW_FIND_PREV +} EvViewFindDirection; + +#define ZOOM_IN_FACTOR 1.2 +#define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) + +#define MIN_SCALE 0.05409 +#define MAX_SCALE 4.0 + +#define SCROLL_TIME 150 + +/*** Scrolling ***/ +static void scroll_to_current_page (EvView *view, + GtkOrientation orientation); +static void ev_view_set_scroll_adjustments (GtkLayout *layout, + GtkAdjustment *hadjustment, + GtkAdjustment *vadjustment); +static void view_update_range_and_current_page (EvView *view); +static void set_scroll_adjustment (EvView *view, + GtkOrientation orientation, + GtkAdjustment *adjustment); +static void add_scroll_binding_keypad (GtkBindingSet *binding_set, + guint keyval, + GdkModifierType modifiers, + GtkScrollType scroll, + gboolean horizontal); +static void ensure_rectangle_is_visible (EvView *view, + GdkRectangle *rect); + +/*** Geometry computations ***/ +static void compute_border (EvView *view, + int width, + int height, + GtkBorder *border); +static void get_page_y_offset (EvView *view, + int page, + double zoom, + int *y_offset); +static gboolean get_page_extents (EvView *view, + gint page, + GdkRectangle *page_area, + GtkBorder *border); +static void view_rect_to_doc_rect (EvView *view, + GdkRectangle *view_rect, + GdkRectangle *page_area, + EvRectangle *doc_rect); +static void doc_rect_to_view_rect (EvView *view, + int page, + EvRectangle *doc_rect, + GdkRectangle *view_rect); +static void find_page_at_location (EvView *view, + gdouble x, + gdouble y, + gint *page, + gint *x_offset, + gint *y_offset); +static gboolean doc_point_to_view_point (EvView *view, + int page, + EvPoint *doc_point, + GdkPoint *view_point); +/*** Hyperrefs ***/ +static EvLink * ev_view_get_link_at_location (EvView *view, + gdouble x, + gdouble y); +static char* tip_from_link (EvView *view, + EvLink *link); +/*** Forms ***/ +static EvFormField *ev_view_get_form_field_at_location (EvView *view, + gdouble x, + gdouble y); + +/*** GtkWidget implementation ***/ +static void ev_view_size_request_continuous_dual_page (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request_continuous (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request_dual_page (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request_single_page (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request (GtkWidget *widget, + GtkRequisition *requisition); +static void ev_view_size_allocate (GtkWidget *widget, + GtkAllocation *allocation); +static void ev_view_realize (GtkWidget *widget); +static gboolean ev_view_scroll_event (GtkWidget *widget, + GdkEventScroll *event); +static gboolean ev_view_expose_event (GtkWidget *widget, + GdkEventExpose *event); +static gboolean ev_view_popup_menu (GtkWidget *widget); +static gboolean ev_view_button_press_event (GtkWidget *widget, + GdkEventButton *event); +static gboolean ev_view_motion_notify_event (GtkWidget *widget, + GdkEventMotion *event); +static gboolean ev_view_button_release_event (GtkWidget *widget, + GdkEventButton *event); +static gboolean ev_view_enter_notify_event (GtkWidget *widget, + GdkEventCrossing *event); +static gboolean ev_view_leave_notify_event (GtkWidget *widget, + GdkEventCrossing *event); +static void ev_view_style_set (GtkWidget *widget, + GtkStyle *old_style); +static void ev_view_remove_all (EvView *view); + +static AtkObject *ev_view_get_accessible (GtkWidget *widget); + +/*** Drawing ***/ +static guint32 ev_gdk_color_to_rgb (const GdkColor *color); +static void draw_rubberband (GtkWidget *widget, + GdkWindow *window, + const GdkRectangle *rect, + guchar alpha); +static void highlight_find_results (EvView *view, + int page); +static void draw_one_page (EvView *view, + gint page, + cairo_t *cr, + GdkRectangle *page_area, + GtkBorder *border, + GdkRectangle *expose_area, + gboolean *page_ready); +static void draw_loading_text (EvView *view, + GdkRectangle *page_area, + GdkRectangle *expose_area); +static void ev_view_reload_page (EvView *view, + gint page, + GdkRegion *region); + +/*** Callbacks ***/ +static void job_finished_cb (EvPixbufCache *pixbuf_cache, + GdkRegion *region, + EvView *view); +static void page_changed_cb (EvPageCache *page_cache, + int new_page, + EvView *view); +static void on_adjustment_value_changed (GtkAdjustment *adjustment, + EvView *view); + +/*** GObject ***/ +static void ev_view_finalize (GObject *object); +static void ev_view_destroy (GtkObject *object); +static void ev_view_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec); +static void ev_view_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec); +static void ev_view_class_init (EvViewClass *class); +static void ev_view_init (EvView *view); + +/*** Zoom and sizing ***/ +static double zoom_for_size_fit_width (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width); +static double zoom_for_size_fit_height (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_height); +static double zoom_for_size_best_fit (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width, + int hsb_width); +static void ev_view_zoom_for_size_presentation (EvView *view, + int width, + int height); +static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +static void ev_view_zoom_for_size_continuous (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +static void ev_view_zoom_for_size_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +static void ev_view_zoom_for_size_single_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +/*** Cursors ***/ +static GdkCursor* ev_view_create_invisible_cursor (void); +static void ev_view_set_cursor (EvView *view, + EvViewCursor new_cursor); +static void ev_view_handle_cursor_over_xy (EvView *view, + gint x, + gint y); + +/*** Find ***/ +static gint ev_view_find_get_n_results (EvView *view, + gint page); +static EvRectangle *ev_view_find_get_result (EvView *view, + gint page, + gint result); +static void jump_to_find_result (EvView *view); +static void jump_to_find_page (EvView *view, + EvViewFindDirection direction, + gint shift); + +/*** Selection ***/ +static void compute_selections (EvView *view, + EvSelectionStyle style, + GdkPoint *start, + GdkPoint *stop); +static void clear_selection (EvView *view); +static void clear_link_selected (EvView *view); +static void selection_free (EvViewSelection *selection); +static char* get_selected_text (EvView *ev_view); +static void ev_view_primary_get_cb (GtkClipboard *clipboard, + GtkSelectionData *selection_data, + guint info, + gpointer data); +static void ev_view_primary_clear_cb (GtkClipboard *clipboard, + gpointer data); +static void ev_view_update_primary_selection (EvView *ev_view); + +/*** Presentation ***/ +static void ev_view_presentation_transition_start (EvView *ev_view); +static void ev_view_presentation_transition_stop (EvView *ev_view); + + +G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT) + +static void +scroll_to_current_page (EvView *view, GtkOrientation orientation) +{ + GdkPoint view_point; + + if (view->document == NULL) { + return; + } + + doc_point_to_view_point (view, view->current_page, &view->pending_point, &view_point); + + if (orientation == GTK_ORIENTATION_VERTICAL) { + view->pending_point.y = 0; + } else { + view->pending_point.x = 0; + } + + if (orientation == GTK_ORIENTATION_VERTICAL) { + if (view->continuous) { + gtk_adjustment_clamp_page (view->vadjustment, + view_point.y - view->spacing / 2, + view_point.y + view->vadjustment->page_size); + } else { + gtk_adjustment_set_value (view->vadjustment, + CLAMP (view_point.y, + view->vadjustment->lower, + view->vadjustment->upper - + view->vadjustment->page_size)); + } + } else { + if (view->dual_page) { + gtk_adjustment_clamp_page (view->hadjustment, + view_point.x, + view_point.x + view->hadjustment->page_size); + } else { + gtk_adjustment_set_value (view->hadjustment, + CLAMP (view_point.x, + view->hadjustment->lower, + view->hadjustment->upper - + view->hadjustment->page_size)); + } + } +} + +static void +view_set_adjustment_values (EvView *view, + GtkOrientation orientation) +{ + GtkWidget *widget = GTK_WIDGET (view); + GtkAdjustment *adjustment; + int requisition; + int allocation; + + double factor; + gint new_value; + + if (orientation == GTK_ORIENTATION_HORIZONTAL) { + requisition = widget->requisition.width; + allocation = widget->allocation.width; + adjustment = view->hadjustment; + } else { + requisition = widget->requisition.height; + allocation = widget->allocation.height; + adjustment = view->vadjustment; + } + + if (!adjustment) + return; + + factor = 1.0; + switch (view->pending_scroll) { + case SCROLL_TO_KEEP_POSITION: + case SCROLL_TO_FIND_LOCATION: + factor = (adjustment->value) / adjustment->upper; + break; + case SCROLL_TO_PAGE_POSITION: + break; + case SCROLL_TO_CENTER: + factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper; + break; + } + + adjustment->page_size = allocation; + adjustment->step_increment = allocation * 0.1; + adjustment->page_increment = allocation * 0.9; + adjustment->lower = 0; + adjustment->upper = MAX (allocation, requisition); + + /* + * We add 0.5 to the values before to average out our rounding errors. + */ + switch (view->pending_scroll) { + case SCROLL_TO_KEEP_POSITION: + case SCROLL_TO_FIND_LOCATION: + new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size); + gtk_adjustment_set_value (adjustment, (int)new_value); + break; + case SCROLL_TO_PAGE_POSITION: + scroll_to_current_page (view, orientation); + break; + case SCROLL_TO_CENTER: + new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5, + 0, adjustment->upper - adjustment->page_size); + gtk_adjustment_set_value (adjustment, (int)new_value); + break; + } + + gtk_adjustment_changed (adjustment); +} + +static void +view_update_range_and_current_page (EvView *view) +{ + gint current_page; + gint best_current_page = -1; + + /* Presentation trumps all other modes */ + if (view->presentation) { + view->start_page = view->current_page; + view->end_page = view->current_page; + } else if (view->continuous) { + GdkRectangle current_area, unused, page_area; + GtkBorder border; + gboolean found = FALSE; + gint area_max = -1, area; + int i; + + if (!(view->vadjustment && view->hadjustment)) + return; + + current_area.x = view->hadjustment->value; + current_area.width = view->hadjustment->upper; + current_area.y = view->vadjustment->value; + current_area.height = view->vadjustment->page_size; + + for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) { + + get_page_extents (view, i, &page_area, &border); + + if (gdk_rectangle_intersect (¤t_area, &page_area, &unused)) { + area = unused.width * unused.height; + + if (!found) { + area_max = area; + view->start_page = i; + found = TRUE; + best_current_page = i; + } + if (area > area_max) { + best_current_page = (area == area_max) ? MIN (i, best_current_page) : i; + area_max = area; + } + + view->end_page = i; + } else if (found && view->current_page <= view->end_page) { + break; + } + } + + } else if (view->dual_page) { + if (view->current_page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) { + view->start_page = view->current_page; + if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) + view->end_page = view->start_page + 1; + else + view->end_page = view->start_page; + } else { + if (view->current_page < 1) + view->start_page = view->current_page; + else + view->start_page = view->current_page - 1; + view->end_page = view->current_page; + } + } else { + view->start_page = view->current_page; + view->end_page = view->current_page; + } + + best_current_page = MAX (best_current_page, view->start_page); + current_page = ev_page_cache_get_current_page (view->page_cache); + + if ((current_page != best_current_page) && (view->pending_scroll == SCROLL_TO_KEEP_POSITION)) { + view->current_page = best_current_page; + ev_page_cache_set_current_page (view->page_cache, best_current_page); + } + + ev_pixbuf_cache_set_page_range (view->pixbuf_cache, + view->start_page, + view->end_page, + view->rotation, + view->scale, + view->selection_info.selections); +} + +static void +set_scroll_adjustment (EvView *view, + GtkOrientation orientation, + GtkAdjustment *adjustment) +{ + GtkAdjustment **to_set; + + if (orientation == GTK_ORIENTATION_HORIZONTAL) + to_set = &view->hadjustment; + else + to_set = &view->vadjustment; + + if (*to_set != adjustment) { + if (*to_set) { + g_signal_handlers_disconnect_by_func (*to_set, + (gpointer) on_adjustment_value_changed, + view); + g_object_unref (*to_set); + } + + *to_set = adjustment; + view_set_adjustment_values (view, orientation); + + if (*to_set) { + g_object_ref (*to_set); + g_signal_connect (*to_set, "value_changed", + G_CALLBACK (on_adjustment_value_changed), view); + } + } +} + +static void +ev_view_set_scroll_adjustments (GtkLayout *layout, + GtkAdjustment *hadjustment, + GtkAdjustment *vadjustment) +{ + EvView *view = EV_VIEW (layout); + + set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment); + set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment); + + on_adjustment_value_changed (NULL, view); +} + +static void +add_scroll_binding_keypad (GtkBindingSet *binding_set, + guint keyval, + GdkModifierType modifiers, + GtkScrollType scroll, + gboolean horizontal) +{ + guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left; + + gtk_binding_entry_add_signal (binding_set, keyval, modifiers, + "binding_activated", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + G_TYPE_BOOLEAN, horizontal); + gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers, + "binding_activated", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + G_TYPE_BOOLEAN, horizontal); +} + +void +ev_view_scroll (EvView *view, + GtkScrollType scroll, + gboolean horizontal) +{ + GtkAdjustment *adjustment; + double value, increment; + gboolean first_page = FALSE; + gboolean last_page = FALSE; + + view->jump_to_find_result = FALSE; + + if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) { + switch (scroll) { + case GTK_SCROLL_PAGE_BACKWARD: + case GTK_SCROLL_STEP_BACKWARD: + ev_view_previous_page (view); + break; + case GTK_SCROLL_PAGE_FORWARD: + case GTK_SCROLL_STEP_FORWARD: + ev_view_next_page (view); + break; + default: + break; + } + return; + } + + /* Assign values for increment and vertical adjustment */ + adjustment = horizontal ? view->hadjustment : view->vadjustment; + increment = adjustment->page_size * 0.75; + value = adjustment->value; + + /* Assign boolean for first and last page */ + if (view->current_page == 0) + first_page = TRUE; + if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1) + last_page = TRUE; + + switch (scroll) { + case GTK_SCROLL_PAGE_BACKWARD: + /* Do not jump backwards if at the first page */ + if (value == (adjustment->lower) && first_page) { + /* Do nothing */ + /* At the top of a page, assign the upper bound limit of previous page */ + } else if (value == (adjustment->lower)) { + value = adjustment->upper - adjustment->page_size; + ev_view_previous_page (view); + /* Jump to the top */ + } else { + value = MAX (value - increment, adjustment->lower); + } + break; + case GTK_SCROLL_PAGE_FORWARD: + /* Do not jump forward if at the last page */ + if (value == (adjustment->upper - adjustment->page_size) && last_page) { + /* Do nothing */ + /* At the bottom of a page, assign the lower bound limit of next page */ + } else if (value == (adjustment->upper - adjustment->page_size)) { + value = 0; + ev_view_next_page (view); + /* Jump to the bottom */ + } else { + value = MIN (value + increment, adjustment->upper - adjustment->page_size); + } + break; + case GTK_SCROLL_STEP_BACKWARD: + value -= adjustment->step_increment; + break; + case GTK_SCROLL_STEP_FORWARD: + value += adjustment->step_increment; + break; + case GTK_SCROLL_STEP_DOWN: + value -= adjustment->step_increment / 10; + break; + case GTK_SCROLL_STEP_UP: + value += adjustment->step_increment / 10; + break; + default: + break; + } + + value = CLAMP (value, adjustment->lower, + adjustment->upper - adjustment->page_size); + + gtk_adjustment_set_value (adjustment, value); +} + +#define MARGIN 5 + +static void +ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) +{ + GtkWidget *widget = GTK_WIDGET (view); + GtkAdjustment *adjustment; + int value; + + view->pending_scroll = SCROLL_TO_FIND_LOCATION; + + adjustment = view->vadjustment; + + if (rect->y < adjustment->value) { + value = MAX (adjustment->lower, rect->y - MARGIN); + gtk_adjustment_set_value (view->vadjustment, value); + } else if (rect->y + rect->height > + adjustment->value + widget->allocation.height) { + value = MIN (adjustment->upper, rect->y + rect->height - + widget->allocation.height + MARGIN); + gtk_adjustment_set_value (view->vadjustment, value); + } + + adjustment = view->hadjustment; + + if (rect->x < adjustment->value) { + value = MAX (adjustment->lower, rect->x - MARGIN); + gtk_adjustment_set_value (view->hadjustment, value); + } else if (rect->x + rect->height > + adjustment->value + widget->allocation.width) { + value = MIN (adjustment->upper, rect->x + rect->width - + widget->allocation.width + MARGIN); + gtk_adjustment_set_value (view->hadjustment, value); + } + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +/*** Geometry computations ***/ + +static void +compute_border (EvView *view, int width, int height, GtkBorder *border) +{ + if (view->presentation) { + border->left = 0; + border->right = 0; + border->top = 0; + border->bottom = 0; + } else { + ev_document_misc_get_page_border_size (width, height, border); + } +} + +static void +get_page_y_offset (EvView *view, int page, double zoom, int *y_offset) +{ + int max_width, offset; + GtkBorder border; + + g_return_if_fail (y_offset != NULL); + + ev_page_cache_get_max_width (view->page_cache, view->rotation, zoom, &max_width); + + compute_border (view, max_width, max_width, &border); + + if (view->dual_page) { + ev_page_cache_get_height_to_page (view->page_cache, page, + view->rotation, zoom, NULL, &offset); + offset += ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 + 1) * view->spacing + ((page + ev_page_cache_get_dual_even_left (view->page_cache)) / 2 ) * (border.top + border.bottom); + } else { + ev_page_cache_get_height_to_page (view->page_cache, page, + view->rotation, zoom, &offset, NULL); + offset += (page + 1) * view->spacing + page * (border.top + border.bottom); + } + + *y_offset = offset; + return; +} + +static gboolean +get_page_extents (EvView *view, + gint page, + GdkRectangle *page_area, + GtkBorder *border) +{ + GtkWidget *widget; + int width, height; + + widget = GTK_WIDGET (view); + + /* Get the size of the page */ + ev_page_cache_get_size (view->page_cache, page, + view->rotation, + view->scale, + &width, &height); + compute_border (view, width, height, border); + page_area->width = width + border->left + border->right; + page_area->height = height + border->top + border->bottom; + + if (view->presentation) { + page_area->x = (MAX (0, widget->allocation.width - width))/2; + page_area->y = (MAX (0, widget->allocation.height - height))/2; + } else if (view->continuous) { + gint max_width; + gint x, y; + + ev_page_cache_get_max_width (view->page_cache, view->rotation, + view->scale, &max_width); + max_width = max_width + border->left + border->right; + /* Get the location of the bounding box */ + if (view->dual_page) { + x = view->spacing + ((page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? 0 : 1) * (max_width + view->spacing); + x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2; + if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) + x = x + (max_width - width - border->left - border->right); + } else { + x = view->spacing; + x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2; + } + + get_page_y_offset (view, page, view->scale, &y); + + page_area->x = x; + page_area->y = y; + } else { + gint x, y; + if (view->dual_page) { + gint width_2, height_2; + gint max_width = width; + gint max_height = height; + GtkBorder overall_border; + gint other_page; + + other_page = (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) ? page + 1: page - 1; + + /* First, we get the bounding box of the two pages */ + if (other_page < ev_page_cache_get_n_pages (view->page_cache) + && (0 <= other_page)) { + ev_page_cache_get_size (view->page_cache, + other_page, + view->rotation, + view->scale, + &width_2, &height_2); + if (width_2 > width) + max_width = width_2; + if (height_2 > height) + max_height = height_2; + } + compute_border (view, max_width, max_height, &overall_border); + + /* Find the offsets */ + x = view->spacing; + y = view->spacing; + + /* Adjust for being the left or right page */ + if (page % 2 == ev_page_cache_get_dual_even_left (view->page_cache)) + x = x + max_width - width; + else + x = x + (max_width + overall_border.left + overall_border.right) + view->spacing; + + y = y + (max_height - height)/2; + + /* Adjust for extra allocation */ + x = x + MAX (0, widget->allocation.width - + ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2; + y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2; + } else { + x = view->spacing; + y = view->spacing; + + /* Adjust for extra allocation */ + x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2; + y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom + view->spacing * 2))/2; + } + + page_area->x = x; + page_area->y = y; + } + + return TRUE; +} + +static void +view_point_to_doc_point (EvView *view, + GdkPoint *view_point, + GdkRectangle *page_area, + double *doc_point_x, + double *doc_point_y) +{ + *doc_point_x = (double) (view_point->x - page_area->x) / view->scale; + *doc_point_y = (double) (view_point->y - page_area->y) / view->scale; +} + +static void +view_rect_to_doc_rect (EvView *view, + GdkRectangle *view_rect, + GdkRectangle *page_area, + EvRectangle *doc_rect) +{ + doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale; + doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale; + doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale; + doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale; +} + +static gboolean +doc_point_to_view_point (EvView *view, + int page, + EvPoint *doc_point, + GdkPoint *view_point) +{ + GdkRectangle page_area; + GtkBorder border; + double x, y, view_x, view_y; + int width, height; + + ev_page_cache_get_size (view->page_cache, page, + view->rotation, + 1.0, + &width, &height); + + if (view->rotation == 0) { + x = doc_point->x; + y = doc_point->y; + } else if (view->rotation == 90) { + x = width - doc_point->y; + y = doc_point->x; + } else if (view->rotation == 180) { + x = width - doc_point->x; + y = height - doc_point->y; + } else if (view->rotation == 270) { + x = doc_point->y; + y = height - doc_point->x; + } else { + g_assert_not_reached (); + } + + get_page_extents (view, page, &page_area, &border); + + view_x = x * view->scale; + view_y = y * view->scale; + view_point->x = view_x + page_area.x; + view_point->y = view_y + page_area.y; + + return (view_x > 0 && view_x <= page_area.width && + view_y > 0 && view_y <= page_area.height); +} + +static void +doc_rect_to_view_rect (EvView *view, + int page, + EvRectangle *doc_rect, + GdkRectangle *view_rect) +{ + GdkRectangle page_area; + GtkBorder border; + double x, y, w, h; + int width, height; + + ev_page_cache_get_size (view->page_cache, page, + view->rotation, + 1.0, + &width, &height); + + if (view->rotation == 0) { + x = doc_rect->x1; + y = doc_rect->y1; + w = doc_rect->x2 - doc_rect->x1; + h = doc_rect->y2 - doc_rect->y1; + } else if (view->rotation == 90) { + x = width - doc_rect->y2; + y = doc_rect->x1; + w = doc_rect->y2 - doc_rect->y1; + h = doc_rect->x2 - doc_rect->x1; + } else if (view->rotation == 180) { + x = width - doc_rect->x2; + y = height - doc_rect->y2; + w = doc_rect->x2 - doc_rect->x1; + h = doc_rect->y2 - doc_rect->y1; + } else if (view->rotation == 270) { + x = doc_rect->y1; + y = height - doc_rect->x2; + w = doc_rect->y2 - doc_rect->y1; + h = doc_rect->x2 - doc_rect->x1; + } else { + g_assert_not_reached (); + } + + get_page_extents (view, page, &page_area, &border); + + view_rect->x = x * view->scale + page_area.x; + view_rect->y = y * view->scale + page_area.y; + view_rect->width = w * view->scale; + view_rect->height = h * view->scale; +} + +static void +find_page_at_location (EvView *view, + gdouble x, + gdouble y, + gint *page, + gint *x_offset, + gint *y_offset) +{ + int i; + + if (view->document == NULL) + return; + + g_assert (page); + g_assert (x_offset); + g_assert (y_offset); + + for (i = view->start_page; i <= view->end_page; i++) { + GdkRectangle page_area; + GtkBorder border; + + if (! get_page_extents (view, i, &page_area, &border)) + continue; + + if ((x >= page_area.x + border.left) && + (x < page_area.x + page_area.width - border.right) && + (y >= page_area.y + border.top) && + (y < page_area.y + page_area.height - border.bottom)) { + *page = i; + *x_offset = x - (page_area.x + border.left); + *y_offset = y - (page_area.y + border.top); + return; + } + } + + *page = -1; +} + +static gboolean +location_in_text (EvView *view, + gdouble x, + gdouble y) +{ + GdkRegion *region; + gint page = -1; + gint x_offset = 0, y_offset = 0; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + + if (page == -1) + return FALSE; + + region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page); + + if (region) + return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale); + else + return FALSE; +} + +static int +ev_view_get_width (EvView *view) +{ + return GTK_WIDGET (view)->allocation.width; +} + +static int +ev_view_get_height (EvView *view) +{ + return GTK_WIDGET (view)->allocation.height; +} + +static gboolean +location_in_selected_text (EvView *view, + gdouble x, + gdouble y) +{ + gint page = -1; + gint x_offset = 0, y_offset = 0; + EvViewSelection *selection; + GList *l = NULL; + + for (l = view->selection_info.selections; l != NULL; l = l->next) { + selection = (EvViewSelection *)l->data; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + + if (page != selection->page) + continue; + + if (selection->covered_region && + gdk_region_point_in (selection->covered_region, x_offset, y_offset)) + return TRUE; + } + + return FALSE; +} + +static gboolean +get_doc_point_from_offset (EvView *view, + gint page, + gint x_offset, + gint y_offset, + gint *x_new, + gint *y_new) +{ + int width, height; + double x, y; + + ev_page_cache_get_size (view->page_cache, page, + view->rotation, + 1.0, + &width, &height); + + x_offset = x_offset / view->scale; + y_offset = y_offset / view->scale; + + if (view->rotation == 0) { + x = x_offset; + y = y_offset; + } else if (view->rotation == 90) { + x = y_offset; + y = width - x_offset; + } else if (view->rotation == 180) { + x = width - x_offset; + y = height - y_offset; + } else if (view->rotation == 270) { + x = height - y_offset; + y = x_offset; + } else { + g_assert_not_reached (); + } + + *x_new = x; + *y_new = y; + + return TRUE; +} + +/*** Hyperref ***/ +static EvLink * +ev_view_get_link_at_location (EvView *view, + gdouble x, + gdouble y) +{ + gint page = -1; + gint x_offset = 0, y_offset = 0; + gint x_new = 0, y_new = 0; + GList *link_mapping; + + if (!EV_IS_DOCUMENT_LINKS (view->document)) + return NULL; + + x += view->scroll_x; + y += view->scroll_y; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + + if (page == -1) + return NULL; + + + if (get_doc_point_from_offset (view, page, x_offset, + y_offset, &x_new, &y_new) == FALSE) + return NULL; + + link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page); + + if (link_mapping) + return ev_link_mapping_find (link_mapping, x_new, y_new); + else + return NULL; +} + +static void +goto_fitr_dest (EvView *view, EvLinkDest *dest) +{ + EvPoint doc_point; + gdouble zoom, left, top; + gboolean change_left, change_top; + + left = ev_link_dest_get_left (dest, &change_left); + top = ev_link_dest_get_top (dest, &change_top); + + zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left, + ev_link_dest_get_bottom (dest) - top, + ev_view_get_width (view), + ev_view_get_height (view), 0, 0); + + ev_view_set_sizing_mode (view, EV_SIZING_FREE); + ev_view_set_zoom (view, zoom, FALSE); + + doc_point.x = change_left ? left : 0; + doc_point.y = change_top ? top : 0; + + view->current_page = ev_link_dest_get_page (dest); + if (change_left || change_top) + view->pending_point = doc_point; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +static void +goto_fitv_dest (EvView *view, EvLinkDest *dest) +{ + EvPoint doc_point; + int doc_width, doc_height, page; + double zoom, left; + gboolean change_left; + + page = ev_link_dest_get_page (dest); + ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height); + + left = ev_link_dest_get_left (dest, &change_left); + doc_point.x = change_left ? left : 0; + doc_point.y = 0; + + zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height, + ev_view_get_width (view), + ev_view_get_height (view), 0); + + ev_view_set_sizing_mode (view, EV_SIZING_FREE); + ev_view_set_zoom (view, zoom, FALSE); + + view->current_page = page; + if (change_left) + view->pending_point = doc_point; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +static void +goto_fith_dest (EvView *view, EvLinkDest *dest) +{ + EvPoint doc_point; + int doc_width, doc_height, page; + gdouble zoom, top; + gboolean change_top; + + page = ev_link_dest_get_page (dest); + ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height); + + top = ev_link_dest_get_top (dest, &change_top); + + doc_point.x = 0; + doc_point.y = change_top ? top : 0; + + zoom = zoom_for_size_fit_width (doc_width, top, + ev_view_get_width (view), + ev_view_get_height (view), 0); + + ev_view_set_sizing_mode (view, EV_SIZING_FIT_WIDTH); + ev_view_set_zoom (view, zoom, FALSE); + + view->current_page = page; + if (change_top) + view->pending_point = doc_point; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +static void +goto_fit_dest (EvView *view, EvLinkDest *dest) +{ + double zoom; + int doc_width, doc_height; + int page; + + page = ev_link_dest_get_page (dest); + ev_page_cache_get_size (view->page_cache, page, 0, 1.0, &doc_width, &doc_height); + + zoom = zoom_for_size_best_fit (doc_width, doc_height, ev_view_get_width (view), + ev_view_get_height (view), 0, 0); + + ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT); + ev_view_set_zoom (view, zoom, FALSE); + + view->current_page = page; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +static void +goto_xyz_dest (EvView *view, EvLinkDest *dest) +{ + EvPoint doc_point; + gint page; + gdouble zoom, left, top; + gboolean change_zoom, change_left, change_top; + + zoom = ev_link_dest_get_zoom (dest, &change_zoom); + page = ev_link_dest_get_page (dest); + + if (change_zoom && zoom > 1) { + ev_view_set_sizing_mode (view, EV_SIZING_FREE); + ev_view_set_zoom (view, zoom, FALSE); + } + + left = ev_link_dest_get_left (dest, &change_left); + top = ev_link_dest_get_top (dest, &change_top); + + doc_point.x = change_left ? left : 0; + doc_point.y = change_top ? top : 0; + + view->current_page = page; + if (change_left || change_top) + view->pending_point = doc_point; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +static void +goto_dest (EvView *view, EvLinkDest *dest) +{ + EvLinkDestType type; + int page, n_pages, current_page; + + page = ev_link_dest_get_page (dest); + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + if (page < 0 || page >= n_pages) + return; + + current_page = view->current_page; + + type = ev_link_dest_get_dest_type (dest); + + switch (type) { + case EV_LINK_DEST_TYPE_PAGE: + ev_page_cache_set_current_page (view->page_cache, page); + break; + case EV_LINK_DEST_TYPE_FIT: + goto_fit_dest (view, dest); + break; + case EV_LINK_DEST_TYPE_FITH: + goto_fith_dest (view, dest); + break; + case EV_LINK_DEST_TYPE_FITV: + goto_fitv_dest (view, dest); + break; + case EV_LINK_DEST_TYPE_FITR: + goto_fitr_dest (view, dest); + break; + case EV_LINK_DEST_TYPE_XYZ: + goto_xyz_dest (view, dest); + break; + case EV_LINK_DEST_TYPE_PAGE_LABEL: + ev_page_cache_set_page_label (view->page_cache, ev_link_dest_get_page_label (dest)); + break; + default: + g_assert_not_reached (); + } + + if (current_page != view->current_page) + ev_page_cache_set_current_page (view->page_cache, + view->current_page); +} + +static void +ev_view_goto_dest (EvView *view, EvLinkDest *dest) +{ + EvLinkDestType type; + + type = ev_link_dest_get_dest_type (dest); + + if (type == EV_LINK_DEST_TYPE_NAMED) { + EvLinkDest *dest2; + const gchar *named_dest; + + named_dest = ev_link_dest_get_named_dest (dest); + dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document), + named_dest); + if (dest2) { + goto_dest (view, dest2); + g_object_unref (dest2); + } + + return; + } + + goto_dest (view, dest); +} + +void +ev_view_handle_link (EvView *view, EvLink *link) +{ + EvLinkAction *action = NULL; + EvLinkActionType type; + + action = ev_link_get_action (link); + if (!action) + return; + + type = ev_link_action_get_action_type (action); + + switch (type) { + case EV_LINK_ACTION_TYPE_GOTO_DEST: { + EvLinkDest *dest; + + g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link); + + dest = ev_link_action_get_dest (action); + ev_view_goto_dest (view, dest); + } + break; + case EV_LINK_ACTION_TYPE_GOTO_REMOTE: + case EV_LINK_ACTION_TYPE_EXTERNAL_URI: + case EV_LINK_ACTION_TYPE_LAUNCH: + case EV_LINK_ACTION_TYPE_NAMED: + g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action); + break; + } +} + +gchar * +ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest) +{ + EvLinkDestType type; + gchar *msg = NULL; + + type = ev_link_dest_get_dest_type (dest); + + switch (type) { + case EV_LINK_DEST_TYPE_NAMED: { + EvLinkDest *dest2; + const gchar *named_dest; + + named_dest = ev_link_dest_get_named_dest (dest); + dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document), + named_dest); + if (dest2) { + msg = ev_page_cache_get_page_label (view->page_cache, + ev_link_dest_get_page (dest2)); + g_object_unref (dest2); + } + } + + break; + case EV_LINK_DEST_TYPE_PAGE_LABEL: { + msg = g_strdup (ev_link_dest_get_page_label (dest)); + } + break; + default: + msg = ev_page_cache_get_page_label (view->page_cache, + ev_link_dest_get_page (dest)); + } + + return msg; +} + +static char * +tip_from_action_named (EvLinkAction *action) +{ + const gchar *name = ev_link_action_get_name (action); + + if (g_ascii_strcasecmp (name, "FirstPage") == 0) { + return g_strdup (_("Go to first page")); + } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) { + return g_strdup (_("Go to previous page")); + } else if (g_ascii_strcasecmp (name, "NextPage") == 0) { + return g_strdup (_("Go to next page")); + } else if (g_ascii_strcasecmp (name, "LastPage") == 0) { + return g_strdup (_("Go to last page")); + } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) { + return g_strdup (_("Go to page")); + } else if (g_ascii_strcasecmp (name, "Find") == 0) { + return g_strdup (_("Find")); + } + + return NULL; +} + +static char * +tip_from_link (EvView *view, EvLink *link) +{ + EvLinkAction *action; + EvLinkActionType type; + char *msg = NULL; + char *page_label; + const char *title; + + action = ev_link_get_action (link); + title = ev_link_get_title (link); + + if (!action) + return title ? g_strdup (title) : NULL; + + type = ev_link_action_get_action_type (action); + + switch (type) { + case EV_LINK_ACTION_TYPE_GOTO_DEST: + page_label = ev_view_page_label_from_dest (view, + ev_link_action_get_dest (action)); + if (page_label) { + msg = g_strdup_printf (_("Go to page %s"), page_label); + g_free (page_label); + } + break; + case EV_LINK_ACTION_TYPE_GOTO_REMOTE: + if (title) { + msg = g_strdup_printf (_("Go to %s on file “%s”"), title, + ev_link_action_get_filename (action)); + } else { + msg = g_strdup_printf (_("Go to file “%s”"), + ev_link_action_get_filename (action)); + } + break; + case EV_LINK_ACTION_TYPE_EXTERNAL_URI: + msg = g_strdup (ev_link_action_get_uri (action)); + break; + case EV_LINK_ACTION_TYPE_LAUNCH: + msg = g_strdup_printf (_("Launch %s"), + ev_link_action_get_filename (action)); + break; + case EV_LINK_ACTION_TYPE_NAMED: + msg = tip_from_action_named (action); + break; + default: + if (title) + msg = g_strdup (title); + break; + } + + return msg; +} + +static void +ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y) +{ + EvLink *link; + EvFormField *field; + + if (view->cursor == EV_VIEW_CURSOR_HIDDEN) + return; + + if (view->drag_info.in_drag) { + if (view->cursor != EV_VIEW_CURSOR_DRAG) + ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG); + return; + } + + if (view->scroll_info.autoscrolling) { + if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL) + ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL); + return; + } + + link = ev_view_get_link_at_location (view, x, y); + if (link) { + g_object_set (view, "has-tooltip", TRUE, NULL); + ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); + } else if ((field = ev_view_get_form_field_at_location (view, x, y))) { + if (field->is_read_only) { + if (view->cursor == EV_VIEW_CURSOR_LINK || + view->cursor == EV_VIEW_CURSOR_IBEAM || + view->cursor == EV_VIEW_CURSOR_DRAG) + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); + } else if (EV_IS_FORM_FIELD_TEXT (field)) { + ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM); + } else { + ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); + } + } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) { + ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM); + } else { + if (view->cursor == EV_VIEW_CURSOR_LINK || + view->cursor == EV_VIEW_CURSOR_IBEAM || + view->cursor == EV_VIEW_CURSOR_DRAG || + view->cursor == EV_VIEW_CURSOR_AUTOSCROLL) + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); + } +} + +/*** Images ***/ +static EvImage * +ev_view_get_image_at_location (EvView *view, + gdouble x, + gdouble y) +{ + gint page = -1; + gint x_offset = 0, y_offset = 0; + gint x_new = 0, y_new = 0; + GList *image_mapping; + + if (!EV_IS_DOCUMENT_IMAGES (view->document)) + return NULL; + + x += view->scroll_x; + y += view->scroll_y; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + + if (page == -1) + return NULL; + + if (get_doc_point_from_offset (view, page, x_offset, + y_offset, &x_new, &y_new) == FALSE) + return NULL; + + image_mapping = ev_pixbuf_cache_get_image_mapping (view->pixbuf_cache, page); + + if (image_mapping) + return ev_image_mapping_find (image_mapping, x_new, y_new); + else + return NULL; +} + +/*** Forms ***/ +static EvFormField * +ev_view_get_form_field_at_location (EvView *view, + gdouble x, + gdouble y) +{ + gint page = -1; + gint x_offset = 0, y_offset = 0; + gint x_new = 0, y_new = 0; + GList *forms_mapping; + + if (!EV_IS_DOCUMENT_FORMS (view->document)) + return NULL; + + x += view->scroll_x; + y += view->scroll_y; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + + if (page == -1) + return NULL; + + if (get_doc_point_from_offset (view, page, x_offset, + y_offset, &x_new, &y_new) == FALSE) + return NULL; + + forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, page); + + if (forms_mapping) + return ev_form_field_mapping_find (forms_mapping, x_new, y_new); + else + return NULL; +} + +static GdkRegion * +ev_view_form_field_get_region (EvView *view, + EvFormField *field) +{ + EvRectangle field_area; + GdkRectangle view_area; + GList *forms_mapping; + + forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, + field->page->index); + ev_form_field_mapping_get_area (forms_mapping, field, &field_area); + doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area); + view_area.x -= view->scroll_x; + view_area.y -= view->scroll_y; + + return gdk_region_rectangle (&view_area); +} + +static gboolean +ev_view_forms_remove_widgets (EvView *view) +{ + ev_view_remove_all (view); + + return FALSE; +} + +static void +ev_view_form_field_destroy (GtkWidget *widget, + EvView *view) +{ + g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view); +} + +static GtkWidget * +ev_view_form_field_button_create_widget (EvView *view, + EvFormField *field) +{ + EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field); + GdkRegion *field_region = NULL; + + switch (field_button->type) { + case EV_FORM_FIELD_BUTTON_PUSH: + return NULL; + case EV_FORM_FIELD_BUTTON_CHECK: + case EV_FORM_FIELD_BUTTON_RADIO: { + gboolean state; + GList *forms_mapping, *l; + + state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document), + field); + + /* FIXME: it actually depends on NoToggleToOff flags */ + if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO && + state && field_button->state) + return NULL; + + field_region = ev_view_form_field_get_region (view, field); + + /* For radio buttons and checkbox buttons that are in a set + * we need to update also the region for the current selected item + */ + forms_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, + field->page->index); + for (l = forms_mapping; l; l = g_list_next (l)) { + EvFormField *button = ((EvFormFieldMapping *)(l->data))->field; + GdkRegion *button_region; + + if (button->id == field->id) + continue; + + /* FIXME: only buttons in the same group should be updated */ + if (!EV_IS_FORM_FIELD_BUTTON (button) || + EV_FORM_FIELD_BUTTON (button)->type != field_button->type || + EV_FORM_FIELD_BUTTON (button)->state != TRUE) + continue; + + button_region = ev_view_form_field_get_region (view, button); + gdk_region_union (field_region, button_region); + gdk_region_destroy (button_region); + } + + ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document), + field, !state); + field_button->state = !state; + } + break; + } + + ev_view_reload_page (view, field->page->index, field_region); + gdk_region_destroy (field_region); + + return NULL; +} + +static void +ev_view_form_field_text_save (EvView *view, + GtkWidget *widget) +{ + EvFormField *field; + + if (!view->document) + return; + + field = g_object_get_data (G_OBJECT (widget), "form-field"); + + if (field->changed) { + EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); + GdkRegion *field_region; + + field_region = ev_view_form_field_get_region (view, field); + + ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document), + field, field_text->text); + field->changed = FALSE; + ev_view_reload_page (view, field->page->index, field_region); + gdk_region_destroy (field_region); + } +} + +static void +ev_view_form_field_text_changed (GtkWidget *widget, + EvFormField *field) +{ + EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); + gchar *text = NULL; + + if (GTK_IS_ENTRY (widget)) { + text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget))); + } else if (GTK_IS_TEXT_BUFFER (widget)) { + GtkTextIter start, end; + + gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end); + text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget), + &start, &end, FALSE); + } + + if (!field_text->text || + (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) { + g_free (field_text->text); + field_text->text = text; + field->changed = TRUE; + } +} + +static GtkWidget * +ev_view_form_field_text_create_widget (EvView *view, + EvFormField *field) +{ + EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field); + GtkWidget *text = NULL; + gchar *txt; + + txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document), + field); + + switch (field_text->type) { + case EV_FORM_FIELD_TEXT_FILE_SELECT: + /* TODO */ + case EV_FORM_FIELD_TEXT_NORMAL: + text = gtk_entry_new (); + gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE); + gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len); + gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password); + + if (txt) { + gtk_entry_set_text (GTK_ENTRY (text), txt); + g_free (txt); + } + + g_signal_connect (G_OBJECT (text), "changed", + G_CALLBACK (ev_view_form_field_text_changed), + field); + g_signal_connect_after (G_OBJECT (text), "activate", + G_CALLBACK (ev_view_form_field_destroy), + view); + break; + case EV_FORM_FIELD_TEXT_MULTILINE: { + GtkTextBuffer *buffer; + + text = gtk_text_view_new (); + buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text)); + + if (txt) { + gtk_text_buffer_set_text (buffer, txt, -1); + g_free (txt); + } + + g_signal_connect (G_OBJECT (buffer), "changed", + G_CALLBACK (ev_view_form_field_text_changed), + field); + } + break; + } + + g_object_weak_ref (G_OBJECT (text), + (GWeakNotify)ev_view_form_field_text_save, + view); + + return text; +} + +static void +ev_view_form_field_choice_save (EvView *view, + GtkWidget *widget) +{ + EvFormField *field; + + if (!view->document) + return; + + field = g_object_get_data (G_OBJECT (widget), "form-field"); + + if (field->changed) { + GList *l; + EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); + GdkRegion *field_region; + + field_region = ev_view_form_field_get_region (view, field); + + if (field_choice->is_editable) { + ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document), + field, field_choice->text); + } else { + ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field); + for (l = field_choice->selected_items; l; l = g_list_next (l)) { + ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document), + field, + GPOINTER_TO_INT (l->data)); + } + } + field->changed = FALSE; + ev_view_reload_page (view, field->page->index, field_region); + gdk_region_destroy (field_region); + } +} + +static void +ev_view_form_field_choice_changed (GtkWidget *widget, + EvFormField *field) +{ + EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); + + if (GTK_IS_COMBO_BOX (widget)) { + gint item; + + item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget)); + if (!field_choice->selected_items || + GPOINTER_TO_INT (field_choice->selected_items->data) != item) { + g_list_free (field_choice->selected_items); + field_choice->selected_items = NULL; + field_choice->selected_items = g_list_prepend (field_choice->selected_items, + GINT_TO_POINTER (item)); + field->changed = TRUE; + } + + if (GTK_IS_COMBO_BOX_ENTRY (widget)) { + gchar *text; + + text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget)); + if (!field_choice->text || + (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) { + g_free (field_choice->text); + field_choice->text = text; + field->changed = TRUE; + } + } + } else if (GTK_IS_TREE_SELECTION (widget)) { + GtkTreeSelection *selection = GTK_TREE_SELECTION (widget); + GtkTreeModel *model; + GList *items, *l; + + items = gtk_tree_selection_get_selected_rows (selection, &model); + g_list_free (field_choice->selected_items); + field_choice->selected_items = NULL; + + for (l = items; l && l->data; l = g_list_next (l)) { + GtkTreeIter iter; + GtkTreePath *path = (GtkTreePath *)l->data; + gint item; + + gtk_tree_model_get_iter (model, &iter, path); + gtk_tree_model_get (model, &iter, 1, &item, -1); + + field_choice->selected_items = g_list_prepend (field_choice->selected_items, + GINT_TO_POINTER (item)); + + gtk_tree_path_free (path); + } + + g_list_free (items); + + field->changed = TRUE; + } +} + +static GtkWidget * +ev_view_form_field_choice_create_widget (EvView *view, + EvFormField *field) +{ + EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field); + GtkWidget *choice; + GtkTreeModel *model; + gint n_items, i; + gint selected_item = 0; + + n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document), + field); + model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT)); + for (i = 0; i < n_items; i++) { + GtkTreeIter iter; + gchar *item; + + item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document), + field, i); + if (ev_document_forms_form_field_choice_is_item_selected ( + EV_DOCUMENT_FORMS (view->document), field, i)) { + selected_item = i; + /* FIXME: we need a get_selected_items function in poppler */ + field_choice->selected_items = g_list_prepend (field_choice->selected_items, + GINT_TO_POINTER (i)); + } + + if (item) { + gtk_list_store_append (GTK_LIST_STORE (model), &iter); + gtk_list_store_set (GTK_LIST_STORE (model), &iter, + 0, item, + 1, i, + -1); + g_free (item); + } + } + + if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) { + GtkCellRenderer *renderer; + GtkWidget *tree_view; + GtkTreeSelection *selection; + + tree_view = gtk_tree_view_new_with_model (model); + gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE); + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view)); + if (field_choice->multi_select) { + gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE); + } + + /* TODO: set selected items */ + + renderer = gtk_cell_renderer_text_new (); + gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view), + 0, + "choix", renderer, + "text", 0, + NULL); + + choice = gtk_scrolled_window_new (NULL, NULL); + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice), + GTK_POLICY_AUTOMATIC, + GTK_POLICY_AUTOMATIC); + gtk_container_add (GTK_CONTAINER (choice), tree_view); + gtk_widget_show (tree_view); + + g_signal_connect (G_OBJECT (selection), "changed", + G_CALLBACK (ev_view_form_field_choice_changed), + field); + g_signal_connect_after (G_OBJECT (selection), "changed", + G_CALLBACK (ev_view_form_field_destroy), + view); + } else if (field_choice->is_editable) { /* ComboBoxEntry */ + gchar *text; + + choice = gtk_combo_box_entry_new_with_model (model, 0); + text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field); + if (text) { + gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text); + g_free (text); + } + + g_signal_connect (G_OBJECT (choice), "changed", + G_CALLBACK (ev_view_form_field_choice_changed), + field); + g_signal_connect_after (G_OBJECT (GTK_BIN (choice)->child), "activate", + G_CALLBACK (ev_view_form_field_destroy), + view); + } else { /* ComboBoxText */ + GtkCellRenderer *renderer; + + choice = gtk_combo_box_new_with_model (model); + renderer = gtk_cell_renderer_text_new (); + gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice), + renderer, TRUE); + gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice), + renderer, + "text", 0, + NULL); + gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item); + gtk_combo_box_popup (GTK_COMBO_BOX (choice)); + + g_signal_connect (G_OBJECT (choice), "changed", + G_CALLBACK (ev_view_form_field_choice_changed), + field); + g_signal_connect_after (G_OBJECT (choice), "changed", + G_CALLBACK (ev_view_form_field_destroy), + view); + } + + g_object_unref (model); + + g_object_weak_ref (G_OBJECT (choice), + (GWeakNotify)ev_view_form_field_choice_save, + view); + + return choice; +} + +static void +ev_view_handle_form_field (EvView *view, + EvFormField *field, + gdouble x, + gdouble y) +{ + GtkWidget *field_widget = NULL; + GList *form_field_mapping; + EvRectangle field_area; + GdkRectangle view_area; + + if (field->is_read_only) + return; + + if (EV_IS_FORM_FIELD_BUTTON (field)) { + field_widget = ev_view_form_field_button_create_widget (view, field); + } else if (EV_IS_FORM_FIELD_TEXT (field)) { + field_widget = ev_view_form_field_text_create_widget (view, field); + } else if (EV_IS_FORM_FIELD_CHOICE (field)) { + field_widget = ev_view_form_field_choice_create_widget (view, field); + } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) { + /* TODO */ + } + + /* Form field doesn't require a widget */ + if (!field_widget) + return; + + g_object_set_data_full (G_OBJECT (field_widget), "form-field", + g_object_ref (field), + (GDestroyNotify)g_object_unref); + + form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, field->page->index); + ev_form_field_mapping_get_area (form_field_mapping, field, &field_area); + + doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area); + view_area.x -= view->scroll_x; + view_area.y -= view->scroll_y; + + gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y); + gtk_widget_show (field_widget); + gtk_widget_grab_focus (field_widget); +} + +/*** GtkWidget implementation ***/ + +static void +ev_view_size_request_continuous_dual_page (EvView *view, + GtkRequisition *requisition) +{ + int max_width; + gint n_pages; + GtkBorder border; + + ev_page_cache_get_max_width (view->page_cache, view->rotation, + view->scale, &max_width); + compute_border (view, max_width, max_width, &border); + + n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1; + + requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3); + get_page_y_offset (view, n_pages, view->scale, &requisition->height); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + /* FIXME: This could actually be set on one page docs or docs + * with a strange aspect ratio. */ + /* requisition->height = 1;*/ + } +} + +static void +ev_view_size_request_continuous (EvView *view, + GtkRequisition *requisition) +{ + int max_width; + int n_pages; + GtkBorder border; + + + ev_page_cache_get_max_width (view->page_cache, view->rotation, + view->scale, &max_width); + n_pages = ev_page_cache_get_n_pages (view->page_cache); + compute_border (view, max_width, max_width, &border); + + requisition->width = max_width + (view->spacing * 2) + border.left + border.right; + get_page_y_offset (view, n_pages, view->scale, &requisition->height); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + /* FIXME: This could actually be set on one page docs or docs + * with a strange aspect ratio. */ + /* requisition->height = 1;*/ + } +} + +static void +ev_view_size_request_dual_page (EvView *view, + GtkRequisition *requisition) +{ + GtkBorder border; + gint width, height; + + /* Find the largest of the two. */ + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->rotation, + view->scale, + &width, &height); + if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) { + gint width_2, height_2; + ev_page_cache_get_size (view->page_cache, + view->current_page + 1, + view->rotation, + view->scale, + &width_2, &height_2); + if (width_2 > width) { + width = width_2; + height = height_2; + } + } + compute_border (view, width, height, &border); + + requisition->width = ((width + border.left + border.right) * 2) + + (view->spacing * 3); + requisition->height = (height + border.top + border.bottom) + + (view->spacing * 2); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + requisition->height = 1; + } +} + +static void +ev_view_size_request_single_page (EvView *view, + GtkRequisition *requisition) +{ + GtkBorder border; + gint width, height; + + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->rotation, + view->scale, + &width, &height); + compute_border (view, width, height, &border); + + requisition->width = width + border.left + border.right + (2 * view->spacing); + requisition->height = height + border.top + border.bottom + (2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + requisition->height = height + border.top + border.bottom + (2 * view->spacing); + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + requisition->height = 1; + } +} + +static void +ev_view_size_request (GtkWidget *widget, + GtkRequisition *requisition) +{ + EvView *view = EV_VIEW (widget); + + if (view->document == NULL) { + requisition->width = 1; + requisition->height = 1; + return; + } + + if (view->presentation) { + requisition->width = 1; + requisition->height = 1; + return; + } + + if (view->continuous && view->dual_page) + ev_view_size_request_continuous_dual_page (view, requisition); + else if (view->continuous) + ev_view_size_request_continuous (view, requisition); + else if (view->dual_page) + ev_view_size_request_dual_page (view, requisition); + else + ev_view_size_request_single_page (view, requisition); +} + +static void +ev_view_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) +{ + EvView *view = EV_VIEW (widget); + GList *children, *l; + + GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH || + view->sizing_mode == EV_SIZING_BEST_FIT) { + + g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0); + + ev_view_size_request (widget, &widget->requisition); + } + + view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL); + view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL); + + if (view->document) + view_update_range_and_current_page (view); + + view->pending_scroll = SCROLL_TO_KEEP_POSITION; + view->pending_resize = FALSE; + + children = gtk_container_get_children (GTK_CONTAINER (widget)); + for (l = children; l && l->data; l = g_list_next (l)) { + EvFormField *field; + EvRectangle field_area; + GdkRectangle view_area; + GList *form_field_mapping; + GtkAllocation child_allocation; + GtkRequisition child_requisition; + GtkWidget *child = (GtkWidget *)l->data; + + field = g_object_get_data (G_OBJECT (child), "form-field"); + if (!field) + continue; + + form_field_mapping = ev_pixbuf_cache_get_form_field_mapping (view->pixbuf_cache, + field->page->index); + ev_form_field_mapping_get_area (form_field_mapping, field, &field_area); + + doc_rect_to_view_rect (view, field->page->index, &field_area, &view_area); + view_area.x -= view->scroll_x; + view_area.y -= view->scroll_y; + + gtk_widget_size_request (child, &child_requisition); + if (child_requisition.width != view_area.width || + child_requisition.height != view_area.height) + gtk_widget_set_size_request (child, view_area.width, view_area.height); + + gtk_container_child_get (GTK_CONTAINER (widget), + child, + "x", &child_allocation.x, + "y", &child_allocation.y, + NULL); + if (child_allocation.x != view_area.x || + child_allocation.y != view_area.y) { + gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y); + } + } + g_list_free (children); +} + +static void +ev_view_realize (GtkWidget *widget) +{ + EvView *view = EV_VIEW (widget); + + if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize) + (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget); + + gdk_window_set_events (view->layout.bin_window, + (gdk_window_get_events (view->layout.bin_window) | + GDK_EXPOSURE_MASK | + GDK_BUTTON_PRESS_MASK | + GDK_BUTTON_RELEASE_MASK | + GDK_SCROLL_MASK | + GDK_KEY_PRESS_MASK | + GDK_POINTER_MOTION_MASK | + GDK_POINTER_MOTION_HINT_MASK | + GDK_ENTER_NOTIFY_MASK | + GDK_LEAVE_NOTIFY_MASK)); + + if (view->presentation) + gdk_window_set_background (view->layout.bin_window, &widget->style->black); + else + gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]); +} + +static gboolean +ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event) +{ + EvView *view = EV_VIEW (widget); + guint state; + + state = event->state & gtk_accelerator_get_default_mod_mask (); + + if (state == GDK_CONTROL_MASK && view->presentation == FALSE) { + ev_view_set_sizing_mode (view, EV_SIZING_FREE); + + if (event->direction == GDK_SCROLL_UP || + event->direction == GDK_SCROLL_LEFT) { + if (ev_view_can_zoom_in (view)) { + ev_view_zoom_in (view); + } + } else { + if (ev_view_can_zoom_out (view)) { + ev_view_zoom_out (view); + } + } + + return TRUE; + } + + view->jump_to_find_result = FALSE; + + /* Shift+Wheel scrolls the in the perpendicular direction */ + if (state & GDK_SHIFT_MASK) { + if (event->direction == GDK_SCROLL_UP) + event->direction = GDK_SCROLL_LEFT; + else if (event->direction == GDK_SCROLL_LEFT) + event->direction = GDK_SCROLL_UP; + else if (event->direction == GDK_SCROLL_DOWN) + event->direction = GDK_SCROLL_RIGHT; + else if (event->direction == GDK_SCROLL_RIGHT) + event->direction = GDK_SCROLL_DOWN; + + event->state &= ~GDK_SHIFT_MASK; + state &= ~GDK_SHIFT_MASK; + } + + if (state == 0 && view->presentation) { + switch (event->direction) { + case GDK_SCROLL_DOWN: + case GDK_SCROLL_RIGHT: + ev_view_next_page (view); + break; + case GDK_SCROLL_UP: + case GDK_SCROLL_LEFT: + ev_view_previous_page (view); + break; + } + + return TRUE; + } + + return FALSE; +} + +static EvViewSelection * +find_selection_for_page (EvView *view, + gint page) +{ + GList *list; + + for (list = view->selection_info.selections; list != NULL; list = list->next) { + EvViewSelection *selection; + + selection = (EvViewSelection *) list->data; + + if (selection->page == page) + return selection; + } + + return NULL; +} + +static void +draw_end_presentation_page (EvView *view, + GdkRectangle *page_area) +{ + PangoLayout *layout; + PangoFontDescription *font_desc; + gchar *markup; + const gchar *text = _("End of presentation. Press Escape to exit."); + + if (view->presentation_state != EV_PRESENTATION_END) + return; + + layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL); + markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text); + pango_layout_set_markup (layout, markup, -1); + g_free (markup); + + font_desc = pango_font_description_new (); + pango_font_description_set_size (font_desc, 16 * PANGO_SCALE); + pango_layout_set_font_description (layout, font_desc); + + gtk_paint_layout (GTK_WIDGET (view)->style, + view->layout.bin_window, + GTK_WIDGET_STATE (view), + FALSE, + page_area, + GTK_WIDGET (view), + NULL, + page_area->x + 15, + page_area->y + 15, + layout); + + pango_font_description_free (font_desc); + g_object_unref (layout); +} + +static gboolean +ev_view_expose_event (GtkWidget *widget, + GdkEventExpose *event) +{ + EvView *view = EV_VIEW (widget); + cairo_t *cr; + gint i; + + if (view->animation && ev_transition_animation_ready (view->animation)) { + GdkRectangle page_area; + GtkBorder border; + + if (get_page_extents (view, view->current_page, &page_area, &border)) { + cr = gdk_cairo_create (view->layout.bin_window); + + /* normalize to x=0, y=0 */ + cairo_translate (cr, page_area.x, page_area.y); + page_area.x = page_area.y = 0; + + ev_transition_animation_paint (view->animation, cr, page_area); + cairo_destroy (cr); + } + + return TRUE; + } + + if (view->presentation) { + switch (view->presentation_state) { + case EV_PRESENTATION_END: { + GdkRectangle area = {0}; + + area.width = widget->allocation.width; + area.height = widget->allocation.height; + + draw_end_presentation_page (view, &area); + } + return FALSE; + case EV_PRESENTATION_BLACK: + case EV_PRESENTATION_WHITE: + return FALSE; + case EV_PRESENTATION_NORMAL: + default: + break; + } + } else if (view->loading) { + GdkRectangle area = {0}; + + area.width = widget->allocation.width; + area.height = widget->allocation.height; + + draw_loading_text (view, + &area, + &(event->area)); + } + + if (view->document == NULL) + return FALSE; + + cr = gdk_cairo_create (view->layout.bin_window); + + for (i = view->start_page; i <= view->end_page; i++) { + GdkRectangle page_area; + GtkBorder border; + gboolean page_ready = TRUE; + + if (!get_page_extents (view, i, &page_area, &border)) + continue; + + page_area.x -= view->scroll_x; + page_area.y -= view->scroll_y; + + draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready); + + if (page_ready && view->find_pages && view->highlight_find_results) + highlight_find_results (view, i); + } + + cairo_destroy (cr); + + if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) + (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event); + + return FALSE; +} + +static gboolean +ev_view_do_popup_menu (EvView *view, + gdouble x, + gdouble y) +{ + EvLink *link; + EvImage *image; + + image = ev_view_get_image_at_location (view, x, y); + if (image) { + g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image); + return TRUE; + } + + link = ev_view_get_link_at_location (view, x, y); + if (link) { + g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link); + return TRUE; + } + + g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL); + + return TRUE; +} + +static gboolean +ev_view_popup_menu (GtkWidget *widget) +{ + gint x, y; + + gtk_widget_get_pointer (widget, &x, &y); + return ev_view_do_popup_menu (EV_VIEW (widget), x, y); +} + +static void +get_link_area (EvView *view, + gint x, + gint y, + EvLink *link, + GdkRectangle *area) +{ + EvRectangle ev_rect; + GList *link_mapping; + gint page; + gint x_offset = 0, y_offset = 0; + + x += view->scroll_x; + y += view->scroll_y; + + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); + + link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page); + ev_link_mapping_get_area (link_mapping, link, &ev_rect); + + doc_rect_to_view_rect (view, page, &ev_rect, area); + area->y -= view->scroll_y ; +} + +static gboolean +ev_view_query_tooltip (GtkWidget *widget, + gint x, + gint y, + gboolean keyboard_tip, + GtkTooltip *tooltip) +{ + EvView *view = EV_VIEW (widget); + EvLink *link; + gchar *text; + + link = ev_view_get_link_at_location (view, x, y); + if (!link) + return FALSE; + + text = tip_from_link (view, link); + if (text && g_utf8_validate (text, -1, NULL)) { + GdkRectangle link_area; + + get_link_area (view, x, y, link, &link_area); + gtk_tooltip_set_text (tooltip, text); + gtk_tooltip_set_tip_area (tooltip, &link_area); + } + g_free (text); + + return TRUE; +} + +static void +start_selection_for_event (EvView *view, + GdkEventButton *event) +{ + EvSelectionStyle style; + + clear_selection (view); + + view->selection_info.start.x = event->x + view->scroll_x; + view->selection_info.start.y = event->y + view->scroll_y; + + switch (event->type) { + case GDK_2BUTTON_PRESS: + style = EV_SELECTION_STYLE_WORD; + break; + case GDK_3BUTTON_PRESS: + style = EV_SELECTION_STYLE_LINE; + break; + default: + style = EV_SELECTION_STYLE_GLYPH; + break; + } + + view->selection_info.style = style; +} + +static gboolean +ev_view_button_press_event (GtkWidget *widget, + GdkEventButton *event) +{ + EvView *view = EV_VIEW (widget); + + if (!view->document) + return FALSE; + + if (!GTK_WIDGET_HAS_FOCUS (widget)) { + gtk_widget_grab_focus (widget); + } + + view->pressed_button = event->button; + view->selection_info.in_drag = FALSE; + + if (view->scroll_info.autoscrolling) + return TRUE; + + switch (event->button) { + case 1: { + EvImage *image; + EvFormField *field; + + if (EV_IS_SELECTION (view->document) && view->selection_info.selections) { + if (event->type == GDK_3BUTTON_PRESS) { + start_selection_for_event (view, event); + } else if (location_in_selected_text (view, + event->x + view->scroll_x, + event->y + view->scroll_y)) { + view->selection_info.in_drag = TRUE; + } else { + start_selection_for_event (view, event); + } + + gtk_widget_queue_draw (widget); + } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) { + ev_view_remove_all (view); + ev_view_handle_form_field (view, field, event->x, event->y); + } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) && + (image = ev_view_get_image_at_location (view, event->x, event->y))) { + if (view->image_dnd_info.image) + g_object_unref (view->image_dnd_info.image); + view->image_dnd_info.image = g_object_ref (image); + view->image_dnd_info.in_drag = TRUE; + + view->image_dnd_info.start.x = event->x + view->scroll_x; + view->image_dnd_info.start.y = event->y + view->scroll_y; + } else { + ev_view_remove_all (view); + + if (EV_IS_SELECTION (view->document)) + start_selection_for_event (view, event); + } + } + return TRUE; + case 2: + /* use root coordinates as reference point because + * scrolling changes window relative coordinates */ + view->drag_info.start.x = event->x_root; + view->drag_info.start.y = event->y_root; + view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment); + view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment); + + ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG); + + return TRUE; + case 3: + view->scroll_info.start_y = event->y; + return ev_view_do_popup_menu (view, event->x, event->y); + } + + return FALSE; +} + +static void +ev_view_remove_all (EvView *view) +{ + GList *children, *child; + + children = gtk_container_get_children (GTK_CONTAINER (view)); + for (child = children; child && child->data; child = g_list_next (child)) { + gtk_container_remove (GTK_CONTAINER (view), + GTK_WIDGET (child->data)); + } + g_list_free (children); +} + +/*** Drag and Drop ***/ +static void +ev_view_drag_data_get (GtkWidget *widget, + GdkDragContext *context, + GtkSelectionData *selection_data, + guint info, + guint time) +{ + EvView *view = EV_VIEW (widget); + + switch (info) { + case TARGET_DND_TEXT: + if (EV_IS_SELECTION (view->document) && + view->selection_info.selections) { + gchar *text; + + text = get_selected_text (view); + gtk_selection_data_set_text (selection_data, + text, + strlen (text)); + g_free (text); + } + break; + case TARGET_DND_IMAGE: + if (view->image_dnd_info.image) { + GdkPixbuf *pixbuf; + + ev_document_doc_mutex_lock (); + pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document), + view->image_dnd_info.image); + ev_document_doc_mutex_unlock (); + + gtk_selection_data_set_pixbuf (selection_data, pixbuf); + g_object_unref (pixbuf); + } + break; + case TARGET_DND_URI: + if (view->image_dnd_info.image) { + GdkPixbuf *pixbuf; + const gchar *tmp_uri; + gchar **uris; + + ev_document_doc_mutex_lock (); + pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document), + view->image_dnd_info.image); + ev_document_doc_mutex_unlock (); + + tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf); + g_object_unref (pixbuf); + + uris = g_new0 (gchar *, 2); + uris[0] = (gchar *)tmp_uri; + + gtk_selection_data_set_uris (selection_data, uris); + + /* g_free instead of g_strfreev since tmp_uri is const */ + g_free (uris); + } + } +} + +static gboolean +ev_view_drag_motion (GtkWidget *widget, + GdkDragContext *context, + gint x, + gint y, + guint time) +{ + if (gtk_drag_get_source_widget (context) == widget) + gdk_drag_status (context, 0, time); + else + gdk_drag_status (context, context->suggested_action, time); + + return TRUE; +} + +static gboolean +selection_update_idle_cb (EvView *view) +{ + compute_selections (view, + view->selection_info.style, + &view->selection_info.start, + &view->motion); + view->selection_update_id = 0; + return FALSE; +} + +static gboolean +selection_scroll_timeout_cb (EvView *view) +{ + gint x, y, shift = 0; + GtkWidget *widget = GTK_WIDGET (view); + + gtk_widget_get_pointer (widget, &x, &y); + + if (y > widget->allocation.height) { + shift = (y - widget->allocation.height) / 2; + } else if (y < 0) { + shift = y / 2; + } + + if (shift) + gtk_adjustment_set_value (view->vadjustment, + CLAMP (view->vadjustment->value + shift, + view->vadjustment->lower, + view->vadjustment->upper - + view->vadjustment->page_size)); + + if (x > widget->allocation.width) { + shift = (x - widget->allocation.width) / 2; + } else if (x < 0) { + shift = x / 2; + } + + if (shift) + gtk_adjustment_set_value (view->hadjustment, + CLAMP (view->hadjustment->value + shift, + view->hadjustment->lower, + view->hadjustment->upper - + view->hadjustment->page_size)); + + return TRUE; +} + +static gboolean +ev_view_drag_update_momentum (EvView *view) +{ + int i; + if (!view->drag_info.in_drag) + return FALSE; + + for (i = DRAG_HISTORY - 1; i > 0; i--) { + view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x; + view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y; + } + + /* Momentum is a moving average of 10ms granularity over + * the last 100ms with each 10ms stored in buffer. + */ + + view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x); + view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y); + + return TRUE; +} + +static gboolean +ev_view_scroll_drag_release (EvView *view) +{ + gdouble dhadj_value, dvadj_value; + gdouble oldhadjustment, oldvadjustment; + + view->drag_info.momentum.x /= 1.2; + view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */ + + dhadj_value = view->hadjustment->page_size * + (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width; + dvadj_value = view->vadjustment->page_size * + (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height; + + oldhadjustment = gtk_adjustment_get_value (view->hadjustment); + oldvadjustment = gtk_adjustment_get_value (view->vadjustment); + + if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) || + ((oldhadjustment + dhadj_value) < 0)) + view->drag_info.momentum.x *= -0.5; /* 0.5 rather than 1 means the edges absorb some momentum */ + if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) || + ((oldvadjustment + dvadj_value) < 0)) + view->drag_info.momentum.y *= -0.5; + + gtk_adjustment_set_value (view->hadjustment, + MIN (oldhadjustment + dhadj_value, + view->hadjustment->upper - view->hadjustment->page_size)); + gtk_adjustment_set_value (view->vadjustment, + MIN (oldvadjustment + dvadj_value, + view->vadjustment->upper - view->vadjustment->page_size)); + + if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) && + ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1))) + return FALSE; + else + return TRUE; +} + +static gboolean +ev_view_motion_notify_event (GtkWidget *widget, + GdkEventMotion *event) +{ + EvView *view = EV_VIEW (widget); + gint x, y; + + if (!view->document) + return FALSE; + + + if (event->is_hint || event->window != view->layout.bin_window) { + gtk_widget_get_pointer (widget, &x, &y); + } else { + x = event->x; + y = event->y; + } + + if (view->scroll_info.autoscrolling) { + view->scroll_info.last_y = y; + return TRUE; + } + + if (view->selection_info.in_drag) { + if (gtk_drag_check_threshold (widget, + view->selection_info.start.x, + view->selection_info.start.y, + x, y)) { + GtkTargetList *target_list = gtk_target_list_new (NULL, 0); + + gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT); + + gtk_drag_begin (widget, target_list, + GDK_ACTION_COPY, + 1, (GdkEvent *)event); + + view->selection_info.in_drag = FALSE; + + gtk_target_list_unref (target_list); + + return TRUE; + } + } else if (view->image_dnd_info.in_drag) { + if (gtk_drag_check_threshold (widget, + view->selection_info.start.x, + view->selection_info.start.y, + x, y)) { + GtkTargetList *target_list = gtk_target_list_new (NULL, 0); + + gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI); + gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE); + + gtk_drag_begin (widget, target_list, + GDK_ACTION_COPY, + 1, (GdkEvent *)event); + + view->image_dnd_info.in_drag = FALSE; + + gtk_target_list_unref (target_list); + + return TRUE; + } + } + + switch (view->pressed_button) { + case 1: + /* For the Evince 0.4.x release, we limit selection to un-rotated + * documents only. + */ + if (view->rotation != 0) + return FALSE; + + /* Schedule timeout to scroll during selection and additionally + * scroll once to allow arbitrary speed. */ + if (!view->selection_scroll_id) + view->selection_scroll_id = g_timeout_add (SCROLL_TIME, + (GSourceFunc)selection_scroll_timeout_cb, + view); + else + selection_scroll_timeout_cb (view); + + view->selection_info.in_selection = TRUE; + view->motion.x = x + view->scroll_x; + view->motion.y = y + view->scroll_y; + + /* Queue an idle to handle the motion. We do this because + * handling any selection events in the motion could be slower + * than new motion events reach us. We always put it in the + * idle to make sure we catch up and don't visibly lag the + * mouse. */ + if (!view->selection_update_id) + view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view); + + return TRUE; + case 2: + if (!view->drag_info.in_drag) { + gboolean start; + int i; + + start = gtk_drag_check_threshold (widget, + view->drag_info.start.x, + view->drag_info.start.y, + event->x_root, + event->y_root); + view->drag_info.in_drag = start; + view->drag_info.drag_timeout_id = g_timeout_add (10, + (GSourceFunc)ev_view_drag_update_momentum, view); + /* Set 100 to choose how long it takes to build up momentum */ + /* Clear out previous momentum info: */ + for (i = 0; i < DRAG_HISTORY; i++) { + view->drag_info.buffer[i].x = event->x; + view->drag_info.buffer[i].y = event->y; + } + view->drag_info.momentum.x = 0; + view->drag_info.momentum.y = 0; + } + + if (view->drag_info.in_drag) { + int dx, dy; + gdouble dhadj_value, dvadj_value; + + view->drag_info.buffer[0].x = event->x; + view->drag_info.buffer[0].y = event->y; + + dx = event->x_root - view->drag_info.start.x; + dy = event->y_root - view->drag_info.start.y; + + dhadj_value = view->hadjustment->page_size * + (gdouble)dx / widget->allocation.width; + dvadj_value = view->vadjustment->page_size * + (gdouble)dy / widget->allocation.height; + + /* clamp scrolling to visible area */ + gtk_adjustment_set_value (view->hadjustment, + MIN(view->drag_info.hadj - dhadj_value, + view->hadjustment->upper - + view->hadjustment->page_size)); + gtk_adjustment_set_value (view->vadjustment, + MIN(view->drag_info.vadj - dvadj_value, + view->vadjustment->upper - + view->vadjustment->page_size)); + + return TRUE; + } + + break; + default: + ev_view_handle_cursor_over_xy (view, x, y); + } + + return FALSE; +} + +static gboolean +ev_view_button_release_event (GtkWidget *widget, + GdkEventButton *event) +{ + EvView *view = EV_VIEW (widget); + EvLink *link = NULL; + + view->image_dnd_info.in_drag = FALSE; + + if (view->scroll_info.autoscrolling) { + ev_view_autoscroll_stop (view); + view->pressed_button = -1; + + return TRUE; + } + + if (view->drag_info.in_drag) { + view->drag_info.release_timeout_id = + g_timeout_add (20, + (GSourceFunc)ev_view_scroll_drag_release, view); + } + + if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) { + link = ev_view_get_link_at_location (view, event->x, event->y); + } + + view->drag_info.in_drag = FALSE; + + if (view->pressed_button == 2) { + ev_view_handle_cursor_over_xy (view, event->x, event->y); + } + + view->pressed_button = -1; + + if (view->selection_scroll_id) { + g_source_remove (view->selection_scroll_id); + view->selection_scroll_id = 0; + } + if (view->selection_update_id) { + g_source_remove (view->selection_update_id); + view->selection_update_id = 0; + } + + if (!view->selection_info.in_selection && + view->selection_info.style != EV_SELECTION_STYLE_GLYPH) { + compute_selections (view, + view->selection_info.style, + &(view->selection_info.start), + &(view->selection_info.start)); + } + + if (view->selection_info.selections) { + clear_link_selected (view); + ev_view_update_primary_selection (view); + + if (view->selection_info.in_drag) { + clear_selection (view); + gtk_widget_queue_draw (widget); + } + + view->selection_info.in_drag = FALSE; + } else if (link) { + if (event->button == 2) { + EvLinkAction *action; + EvLinkActionType type; + + action = ev_link_get_action (link); + if (!action) + return FALSE; + + type = ev_link_action_get_action_type (action); + if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) { + g_signal_emit (view, + signals[SIGNAL_EXTERNAL_LINK], + 0, action); + } + } else { + ev_view_handle_link (view, link); + } + } else if (view->presentation) { + switch (event->button) { + case 1: + ev_view_next_page (view); + return TRUE; + case 3: + ev_view_previous_page (view); + return TRUE; + } + } + + return FALSE; +} + +/* Goto Window */ +/* Cut and paste from gtkwindow.c */ +static void +send_focus_change (GtkWidget *widget, + gboolean in) +{ + GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE); + + g_object_ref (widget); + + if (in) + GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS); + else + GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS); + + fevent->focus_change.type = GDK_FOCUS_CHANGE; + fevent->focus_change.window = g_object_ref (widget->window); + fevent->focus_change.in = in; + + gtk_widget_event (widget, fevent); + + g_object_notify (G_OBJECT (widget), "has-focus"); + + g_object_unref (widget); + gdk_event_free (fevent); +} + +static void +ev_view_goto_window_hide (EvView *view) +{ + /* send focus-in event */ + send_focus_change (view->goto_entry, FALSE); + gtk_widget_hide (view->goto_window); + gtk_entry_set_text (GTK_ENTRY (view->goto_entry), ""); +} + +static gboolean +ev_view_goto_window_delete_event (GtkWidget *widget, + GdkEventAny *event, + EvView *view) +{ + ev_view_goto_window_hide (view); + + return TRUE; +} + +static gboolean +key_is_numeric (guint keyval) +{ + return ((keyval >= GDK_0 && keyval <= GDK_9) || + (keyval >= GDK_KP_0 && keyval <= GDK_KP_9)); +} + +static gboolean +ev_view_goto_window_key_press_event (GtkWidget *widget, + GdkEventKey *event, + EvView *view) +{ + switch (event->keyval) { + case GDK_Escape: + case GDK_Tab: + case GDK_KP_Tab: + case GDK_ISO_Left_Tab: + ev_view_goto_window_hide (view); + return TRUE; + case GDK_Return: + case GDK_KP_Enter: + case GDK_ISO_Enter: + case GDK_BackSpace: + case GDK_Delete: + return FALSE; + default: + if (!key_is_numeric (event->keyval)) + return TRUE; + } + + return FALSE; +} + +static gboolean +ev_view_goto_window_button_press_event (GtkWidget *widget, + GdkEventButton *event, + EvView *view) +{ + ev_view_goto_window_hide (view); + + return TRUE; +} + +static void +ev_view_goto_entry_activate (GtkEntry *entry, + EvView *view) +{ + const gchar *text; + gint page; + + text = gtk_entry_get_text (entry); + page = atoi (text) - 1; + + ev_view_goto_window_hide (view); + + if (page >= 0 && + page < ev_page_cache_get_n_pages (view->page_cache)) + ev_page_cache_set_current_page (view->page_cache, page); +} + +static void +ev_view_goto_window_create (EvView *view) +{ + GtkWidget *frame, *hbox, *toplevel, *label; + + toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view)); + + if (view->goto_window) { + if (GTK_WINDOW (toplevel)->group) + gtk_window_group_add_window (GTK_WINDOW (toplevel)->group, + GTK_WINDOW (view->goto_window)); + else if (GTK_WINDOW (view->goto_window)->group) + gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group, + GTK_WINDOW (view->goto_window)); + return; + } + + view->goto_window = gtk_window_new (GTK_WINDOW_POPUP); + + if (GTK_WINDOW (toplevel)->group) + gtk_window_group_add_window (GTK_WINDOW (toplevel)->group, + GTK_WINDOW (view->goto_window)); + + gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE); + + g_signal_connect (view->goto_window, "delete_event", + G_CALLBACK (ev_view_goto_window_delete_event), + view); + g_signal_connect (view->goto_window, "key_press_event", + G_CALLBACK (ev_view_goto_window_key_press_event), + view); + g_signal_connect (view->goto_window, "button_press_event", + G_CALLBACK (ev_view_goto_window_button_press_event), + view); + + frame = gtk_frame_new (NULL); + gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN); + gtk_container_add (GTK_CONTAINER (view->goto_window), frame); + gtk_widget_show (frame); + + hbox = gtk_hbox_new (FALSE, 0); + gtk_container_set_border_width (GTK_CONTAINER (hbox), 3); + gtk_container_add (GTK_CONTAINER (frame), hbox); + gtk_widget_show (hbox); + + label = gtk_label_new(_("Jump to page:")); + gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3); + gtk_widget_show (label); + gtk_widget_realize (label); + + view->goto_entry = gtk_entry_new (); + g_signal_connect (view->goto_entry, "activate", + G_CALLBACK (ev_view_goto_entry_activate), + view); + gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0); + gtk_widget_show (view->goto_entry); + gtk_widget_realize (view->goto_entry); +} + +static void +ev_view_goto_entry_grab_focus (EvView *view) +{ + GtkWidgetClass *entry_parent_class; + + entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry)); + (entry_parent_class->grab_focus) (view->goto_entry); + + send_focus_change (view->goto_entry, TRUE); +} + +static void +ev_view_goto_window_send_key_event (EvView *view, + GdkEvent *event) +{ + GdkEventKey *new_event; + GdkScreen *screen; + + /* Move goto window off screen */ + screen = gtk_widget_get_screen (GTK_WIDGET (view)); + gtk_window_move (GTK_WINDOW (view->goto_window), + gdk_screen_get_width (screen) + 1, + gdk_screen_get_height (screen) + 1); + gtk_widget_show (view->goto_window); + + new_event = (GdkEventKey *) gdk_event_copy (event); + g_object_unref (new_event->window); + new_event->window = g_object_ref (view->goto_window->window); + gtk_widget_realize (view->goto_window); + + gtk_widget_event (view->goto_window, (GdkEvent *)new_event); + gdk_event_free ((GdkEvent *)new_event); + gtk_widget_hide (view->goto_window); +} + +static gboolean +ev_view_key_press_event (GtkWidget *widget, + GdkEventKey *event) +{ + EvView *view = EV_VIEW (widget); + EvPresentationState current; + + if (!view->document) + return FALSE; + + if (!view->presentation || + view->presentation_state == EV_PRESENTATION_END) + return gtk_bindings_activate_event (GTK_OBJECT (widget), event); + + + current = view->presentation_state; + + switch (event->keyval) { + case GDK_b: + case GDK_B: + case GDK_period: + case GDK_KP_Decimal: + view->presentation_state = + (view->presentation_state == EV_PRESENTATION_BLACK) ? + EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK; + break; + case GDK_w: + case GDK_W: + view->presentation_state = + (view->presentation_state == EV_PRESENTATION_WHITE) ? + EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE; + break; + default: + if (view->presentation_state == EV_PRESENTATION_BLACK || + view->presentation_state == EV_PRESENTATION_WHITE) { + view->presentation_state = EV_PRESENTATION_NORMAL; + } + } + + if (current == view->presentation_state) { + if (ev_page_cache_get_n_pages (view->page_cache) > 1 && + key_is_numeric (event->keyval)) { + gint x, y; + + ev_view_goto_window_create (view); + ev_view_goto_window_send_key_event (view, (GdkEvent *)event); + gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); + gtk_window_move (GTK_WINDOW (view->goto_window), x, y); + gtk_widget_show (view->goto_window); + ev_view_goto_entry_grab_focus (view); + + return TRUE; + } + + return gtk_bindings_activate_event (GTK_OBJECT (widget), event); + } + + switch (view->presentation_state) { + case EV_PRESENTATION_NORMAL: + case EV_PRESENTATION_BLACK: + gdk_window_set_background (view->layout.bin_window, + &widget->style->black); + break; + case EV_PRESENTATION_WHITE: + gdk_window_set_background (view->layout.bin_window, + &widget->style->white); + break; + default: + return gtk_bindings_activate_event (GTK_OBJECT (widget), event); + } + + gtk_widget_queue_draw (widget); + return TRUE; +} + +static gint +ev_view_focus_in (GtkWidget *widget, + GdkEventFocus *event) +{ + if (EV_VIEW (widget)->pixbuf_cache) + ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); + gtk_widget_queue_draw (widget); + + return FALSE; +} + +static gint +ev_view_focus_out (GtkWidget *widget, + GdkEventFocus *event) +{ + if (EV_VIEW (widget)->goto_window) + ev_view_goto_window_hide (EV_VIEW (widget)); + + if (EV_VIEW (widget)->pixbuf_cache) + ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); + gtk_widget_queue_draw (widget); + + return FALSE; +} + +static gboolean +ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing *event) +{ + EvView *view = EV_VIEW (widget); + + if (view->cursor != EV_VIEW_CURSOR_NORMAL) + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); + + return FALSE; +} + +static gboolean +ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing *event) +{ + EvView *view = EV_VIEW (widget); + + ev_view_handle_cursor_over_xy (view, event->x, event->y); + + return FALSE; +} + +static void +ev_view_style_set (GtkWidget *widget, + GtkStyle *old_style) +{ + if (EV_VIEW (widget)->pixbuf_cache) + ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache); + + GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style); +} + +/*** Drawing ***/ + +static guint32 +ev_gdk_color_to_rgb (const GdkColor *color) +{ + guint32 result; + result = (0xff0000 | (color->red & 0xff00)); + result <<= 8; + result |= ((color->green & 0xff00) | (color->blue >> 8)); + return result; +} + +static void +draw_rubberband (GtkWidget *widget, GdkWindow *window, + const GdkRectangle *rect, guchar alpha) +{ + GdkGC *gc; + GdkPixbuf *pixbuf; + GdkColor *fill_color_gdk; + guint fill_color; + + fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]); + fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha; + + pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, + rect->width, rect->height); + gdk_pixbuf_fill (pixbuf, fill_color); + + gdk_draw_pixbuf (window, NULL, pixbuf, + 0, 0, + rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y, + rect->width, rect->height, + GDK_RGB_DITHER_NONE, + 0, 0); + + g_object_unref (pixbuf); + + gc = gdk_gc_new (window); + gdk_gc_set_rgb_fg_color (gc, fill_color_gdk); + gdk_draw_rectangle (window, gc, FALSE, + rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y, + rect->width - 1, + rect->height - 1); + g_object_unref (gc); + + gdk_color_free (fill_color_gdk); +} + + +static void +highlight_find_results (EvView *view, int page) +{ + gint i, n_results = 0; + + n_results = ev_view_find_get_n_results (view, page); + + for (i = 0; i < n_results; i++) { + EvRectangle *rectangle; + GdkRectangle view_rectangle; + guchar alpha; + + if (i == view->find_result && page == view->current_page) { + alpha = 0x90; + } else { + alpha = 0x20; + } + + rectangle = ev_view_find_get_result (view, page, i); + doc_rect_to_view_rect (view, page, rectangle, &view_rectangle); + draw_rubberband (GTK_WIDGET (view), view->layout.bin_window, + &view_rectangle, alpha); + } +} + +static void +draw_loading_text (EvView *view, + GdkRectangle *page_area, + GdkRectangle *expose_area) +{ + cairo_t *cr; + gint width, height; + + if (!view->loading_text) { + const gchar *loading_text = _("Loading..."); + PangoLayout *layout; + PangoFontDescription *font_desc; + PangoRectangle logical_rect; + gint target_width; + gdouble real_scale; + + ev_document_fc_mutex_lock (); + + layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text); + + font_desc = pango_font_description_new (); + + /* We set the font to be 10 points, get the size, and scale appropriately */ + pango_font_description_set_size (font_desc, 10 * PANGO_SCALE); + pango_layout_set_font_description (layout, font_desc); + pango_layout_get_pixel_extents (layout, NULL, &logical_rect); + + target_width = MAX (page_area->width / 2, 1); + real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10); + pango_font_description_set_size (font_desc, (int)real_scale); + pango_layout_set_font_description (layout, font_desc); + pango_layout_get_pixel_extents (layout, NULL, &logical_rect); + + view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, + logical_rect.width, + logical_rect.height); + cr = cairo_create (view->loading_text); + cairo_set_source_rgb (cr, + 155 / (double)255, + 155 / (double)255, + 155 / (double)255); + pango_cairo_show_layout (cr, layout); + cairo_destroy (cr); + + pango_font_description_free (font_desc); + g_object_unref (layout); + + ev_document_fc_mutex_unlock (); + } + + width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2; + height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2; + + cr = gdk_cairo_create (view->layout.bin_window); + cairo_translate (cr, + page_area->x + width, + page_area->y + height); + cairo_set_source_surface (cr, view->loading_text, 0, 0); + cairo_paint (cr); + cairo_destroy (cr); +} + +static void +draw_one_page (EvView *view, + gint page, + cairo_t *cr, + GdkRectangle *page_area, + GtkBorder *border, + GdkRectangle *expose_area, + gboolean *page_ready) +{ + GdkRectangle overlap; + GdkRectangle real_page_area; + + g_assert (view->document); + + if (! gdk_rectangle_intersect (page_area, expose_area, &overlap)) + return; + + /* Render the document itself */ + real_page_area = *page_area; + + real_page_area.x += border->left; + real_page_area.y += border->top; + real_page_area.width -= (border->left + border->right); + real_page_area.height -= (border->top + border->bottom); + *page_ready = TRUE; + + if (!view->presentation) { + gint current_page; + + current_page = ev_page_cache_get_current_page (view->page_cache); + ev_document_misc_paint_one_page (view->layout.bin_window, + GTK_WIDGET (view), + page_area, border, + page == current_page); + } + + if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) { + gint width, height; + gint page_width, page_height; + cairo_surface_t *page_surface = NULL; + gint selection_width, selection_height; + cairo_surface_t *selection_surface = NULL; + + page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page); + + if (!page_surface) { + if (!view->presentation) { + draw_loading_text (view, + &real_page_area, + expose_area); + } + + *page_ready = FALSE; + + return; + } + + ev_page_cache_get_size (view->page_cache, + page, view->rotation, + view->scale, + &width, &height); + + page_width = cairo_image_surface_get_width (page_surface); + page_height = cairo_image_surface_get_height (page_surface); + + cairo_save (cr); + cairo_translate (cr, overlap.x, overlap.y); + + if (width != page_width || height != page_height) { + cairo_pattern_set_filter (cairo_get_source (cr), + CAIRO_FILTER_FAST); + cairo_scale (cr, + (gdouble)width / page_width, + (gdouble)height / page_height); + } + + cairo_surface_set_device_offset (page_surface, + overlap.x - real_page_area.x, + overlap.y - real_page_area.y); + cairo_set_source_surface (cr, page_surface, 0, 0); + cairo_paint (cr); + cairo_restore (cr); + + /* Get the selection pixbuf iff we have something to draw */ + if (find_selection_for_page (view, page) && + view->selection_mode == EV_VIEW_SELECTION_TEXT) { + selection_surface = + ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache, + page, + view->scale, + NULL); + } + + if (!selection_surface) { + return; + } + + selection_width = cairo_image_surface_get_width (selection_surface); + selection_height = cairo_image_surface_get_height (selection_surface); + + cairo_save (cr); + cairo_translate (cr, overlap.x, overlap.y); + + if (width != selection_width || height != selection_height) { + cairo_pattern_set_filter (cairo_get_source (cr), + CAIRO_FILTER_FAST); + cairo_scale (cr, + (gdouble)width / selection_width, + (gdouble)height / selection_height); + } + + cairo_surface_set_device_offset (selection_surface, + overlap.x - real_page_area.x, + overlap.y - real_page_area.y); + cairo_set_source_surface (cr, selection_surface, 0, 0); + cairo_paint (cr); + cairo_restore (cr); + } +} + +/*** GObject functions ***/ + +static void +ev_view_finalize (GObject *object) +{ + EvView *view = EV_VIEW (object); + + clear_selection (view); + clear_link_selected (view); + + if (view->image_dnd_info.image) + g_object_unref (view->image_dnd_info.image); + view->image_dnd_info.image = NULL; + + G_OBJECT_CLASS (ev_view_parent_class)->finalize (object); +} + +static void +ev_view_destroy (GtkObject *object) +{ + EvView *view = EV_VIEW (object); + + if (view->document) { + g_object_unref (view->document); + view->document = NULL; + } + + if (view->pixbuf_cache) { + g_object_unref (view->pixbuf_cache); + view->pixbuf_cache = NULL; + } + + if (view->goto_window) { + gtk_widget_destroy (view->goto_window); + view->goto_window = NULL; + view->goto_entry = NULL; + } + + if (view->selection_scroll_id) { + g_source_remove (view->selection_scroll_id); + view->selection_scroll_id = 0; + } + + if (view->selection_update_id) { + g_source_remove (view->selection_update_id); + view->selection_update_id = 0; + } + + if (view->loading_text) { + cairo_surface_destroy (view->loading_text); + view->loading_text = NULL; + } + + if (view->scroll_info.timeout_id) { + g_source_remove (view->scroll_info.timeout_id); + view->scroll_info.timeout_id = 0; + } + + if (view->drag_info.drag_timeout_id) { + g_source_remove (view->drag_info.drag_timeout_id); + view->drag_info.drag_timeout_id = 0; + } + + if (view->drag_info.release_timeout_id) { + g_source_remove (view->drag_info.release_timeout_id); + view->drag_info.release_timeout_id = 0; + } + + ev_view_presentation_transition_stop (view); + + ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL); + + GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object); +} + +static void +ev_view_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + EvView *view = EV_VIEW (object); + + switch (prop_id) { + case PROP_CONTINUOUS: + ev_view_set_continuous (view, g_value_get_boolean (value)); + break; + case PROP_DUAL_PAGE: + ev_view_set_dual_page (view, g_value_get_boolean (value)); + break; + case PROP_FULLSCREEN: + ev_view_set_fullscreen (view, g_value_get_boolean (value)); + break; + case PROP_PRESENTATION: + ev_view_set_presentation (view, g_value_get_boolean (value)); + break; + case PROP_SIZING_MODE: + ev_view_set_sizing_mode (view, g_value_get_enum (value)); + break; + case PROP_ZOOM: + ev_view_set_zoom (view, g_value_get_double (value), FALSE); + break; + case PROP_ROTATION: + ev_view_set_rotation (view, g_value_get_int (value)); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static AtkObject * +ev_view_get_accessible (GtkWidget *widget) +{ + static gboolean first_time = TRUE; + + if (first_time) { + AtkObjectFactory *factory; + AtkRegistry *registry; + GType derived_type; + GType derived_atk_type; + + /* + * Figure out whether accessibility is enabled by looking at the + * type of the accessible object which would be created for + * the parent type of EvView. + */ + derived_type = g_type_parent (EV_TYPE_VIEW); + + registry = atk_get_default_registry (); + factory = atk_registry_get_factory (registry, + derived_type); + derived_atk_type = atk_object_factory_get_accessible_type (factory); + if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE)) + atk_registry_set_factory_type (registry, + EV_TYPE_VIEW, + ev_view_accessible_factory_get_type ()); + first_time = FALSE; + } + return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget); +} + +static void +ev_view_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EvView *view = EV_VIEW (object); + + switch (prop_id) { + case PROP_CONTINUOUS: + g_value_set_boolean (value, view->continuous); + break; + case PROP_DUAL_PAGE: + g_value_set_boolean (value, view->dual_page); + break; + case PROP_FULLSCREEN: + g_value_set_boolean (value, view->fullscreen); + break; + case PROP_PRESENTATION: + g_value_set_boolean (value, view->presentation); + break; + case PROP_SIZING_MODE: + g_value_set_enum (value, view->sizing_mode); + break; + case PROP_ZOOM: + g_value_set_double (value, view->scale); + break; + case PROP_ROTATION: + g_value_set_int (value, view->rotation); + break; + case PROP_HAS_SELECTION: + g_value_set_boolean (value, + view->selection_info.selections != NULL); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static void +ev_view_class_init (EvViewClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class); + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); + GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class); + GtkBindingSet *binding_set; + + object_class->finalize = ev_view_finalize; + object_class->set_property = ev_view_set_property; + object_class->get_property = ev_view_get_property; + + widget_class->expose_event = ev_view_expose_event; + widget_class->button_press_event = ev_view_button_press_event; + widget_class->motion_notify_event = ev_view_motion_notify_event; + widget_class->button_release_event = ev_view_button_release_event; + widget_class->key_press_event = ev_view_key_press_event; + widget_class->focus_in_event = ev_view_focus_in; + widget_class->focus_out_event = ev_view_focus_out; + widget_class->get_accessible = ev_view_get_accessible; + widget_class->size_request = ev_view_size_request; + widget_class->size_allocate = ev_view_size_allocate; + widget_class->realize = ev_view_realize; + widget_class->scroll_event = ev_view_scroll_event; + widget_class->enter_notify_event = ev_view_enter_notify_event; + widget_class->leave_notify_event = ev_view_leave_notify_event; + widget_class->style_set = ev_view_style_set; + widget_class->drag_data_get = ev_view_drag_data_get; + widget_class->drag_motion = ev_view_drag_motion; + widget_class->popup_menu = ev_view_popup_menu; + widget_class->query_tooltip = ev_view_query_tooltip; + + gtk_object_class->destroy = ev_view_destroy; + + layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments; + + class->binding_activated = ev_view_scroll; + + signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, binding_activated), + NULL, NULL, + ev_view_marshal_VOID__ENUM_BOOLEAN, + G_TYPE_NONE, 2, + GTK_TYPE_SCROLL_TYPE, + G_TYPE_BOOLEAN); + + signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, zoom_invalid), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0, G_TYPE_NONE); + signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, handle_link), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + G_TYPE_OBJECT); + signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, external_link), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + G_TYPE_OBJECT); + signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, popup_menu), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + G_TYPE_OBJECT); + + + g_object_class_install_property (object_class, + PROP_CONTINUOUS, + g_param_spec_boolean ("continuous", + "Continuous", + "Continuous scrolling mode", + TRUE, + G_PARAM_READWRITE)); + + g_object_class_install_property (object_class, + PROP_DUAL_PAGE, + g_param_spec_boolean ("dual-page", + "Dual Page", + "Two pages visible at once", + FALSE, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_FULLSCREEN, + g_param_spec_boolean ("fullscreen", + "Full Screen", + "Draw page in a fullscreen fashion", + FALSE, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_PRESENTATION, + g_param_spec_boolean ("presentation", + "Presentation", + "Draw page in presentation mode", + TRUE, + G_PARAM_READWRITE)); + + g_object_class_install_property (object_class, + PROP_SIZING_MODE, + g_param_spec_enum ("sizing-mode", + "Sizing Mode", + "Sizing Mode", + EV_TYPE_SIZING_MODE, + EV_SIZING_FIT_WIDTH, + G_PARAM_READWRITE)); + + g_object_class_install_property (object_class, + PROP_ZOOM, + g_param_spec_double ("zoom", + "Zoom factor", + "Zoom factor", + 0, + G_MAXDOUBLE, + 1.0, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_ROTATION, + g_param_spec_double ("rotation", + "Rotation", + "Rotation", + 0, + 360, + 0, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_HAS_SELECTION, + g_param_spec_boolean ("has-selection", + "Has selection", + "The view has selections", + FALSE, + G_PARAM_READABLE)); + + binding_set = gtk_binding_set_by_class (class); + + add_scroll_binding_keypad (binding_set, GDK_Left, 0, GTK_SCROLL_STEP_BACKWARD, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Left, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Up, 0, GTK_SCROLL_STEP_BACKWARD, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Down, 0, GTK_SCROLL_STEP_FORWARD, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Up, GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Down, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP, FALSE); + gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE); + gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE); + gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE); + gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE, + GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE); + +} + +static void +ev_view_init (EvView *view) +{ + GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); + + view->spacing = 5; + view->scale = 1.0; + view->current_page = 0; + view->pressed_button = -1; + view->cursor = EV_VIEW_CURSOR_NORMAL; + view->drag_info.in_drag = FALSE; + view->scroll_info.autoscrolling = FALSE; + view->selection_info.selections = NULL; + view->selection_info.in_selection = FALSE; + view->selection_info.in_drag = FALSE; + view->selection_mode = EV_VIEW_SELECTION_TEXT; + view->continuous = TRUE; + view->dual_page = FALSE; + view->presentation = FALSE; + view->presentation_state = EV_PRESENTATION_NORMAL; + view->fullscreen = FALSE; + view->sizing_mode = EV_SIZING_FIT_WIDTH; + view->pending_scroll = SCROLL_TO_KEEP_POSITION; + view->jump_to_find_result = TRUE; + view->highlight_find_results = FALSE; + + gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL); + gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL); +} + +/*** Callbacks ***/ + +static void +ev_view_change_page (EvView *view, + gint new_page, + gboolean start_transition) +{ + gint x, y; + + view->current_page = new_page; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + + if (view->presentation && start_transition) + ev_view_presentation_transition_start (view); + + gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); + ev_view_handle_cursor_over_xy (view, x, y); + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +static void +ev_view_transition_animation_finish (EvTransitionAnimation *animation, + EvView *view) +{ + g_object_unref (view->animation); + view->animation = NULL; + ev_view_change_page (view, view->current_page, TRUE); +} + +/** + * ev_view_transition_animation_cancel: + * @animation: Animation to finish + * @view: An EvView + * + * Does almost the same as cancel, but without scheduling the transition. + */ + +static void +ev_view_transition_animation_cancel (EvTransitionAnimation *animation, + EvView *view) +{ + g_object_unref (view->animation); + view->animation = NULL; + ev_view_change_page (view, view->current_page, FALSE); +} + +static void +ev_view_transition_animation_frame (EvTransitionAnimation *animation, + gdouble progress, + EvView *view) +{ + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +static void +ev_view_presentation_animation_start (EvView *view, + int new_page) +{ + EvTransitionEffect *effect = NULL; + cairo_surface_t *surface; + + if (EV_IS_DOCUMENT_TRANSITION (view->document)) + effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document), + view->current_page); + if (!effect) + return; + + surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page); + view->animation = ev_transition_animation_new (effect); + ev_transition_animation_set_origin_surface (view->animation, surface); + + g_signal_connect (view->animation, "frame", + G_CALLBACK (ev_view_transition_animation_frame), view); + g_signal_connect (view->animation, "finished", + G_CALLBACK (ev_view_transition_animation_finish), view); +} + +static void +job_finished_cb (EvPixbufCache *pixbuf_cache, + GdkRegion *region, + EvView *view) +{ + if (view->animation) { + cairo_surface_t *surface; + + surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page); + ev_transition_animation_set_dest_surface (view->animation, surface); + } + + if (region) { + gdk_window_invalidate_region (view->layout.bin_window, + region, TRUE); + } else { + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} + +static void +page_changed_cb (EvPageCache *page_cache, + int new_page, + EvView *view) +{ + if (view->current_page != new_page) { + if (view->presentation) + ev_view_presentation_animation_start (view, new_page); + + ev_view_change_page (view, new_page, TRUE); + } else { + gtk_widget_queue_draw (GTK_WIDGET (view)); + } + + view->find_result = 0; +} + +static void +on_adjustment_value_changed (GtkAdjustment *adjustment, + EvView *view) +{ + int dx = 0, dy = 0; + gint x, y; + GList *children, *l; + + if (! GTK_WIDGET_REALIZED (view)) + return; + + if (view->hadjustment) { + dx = view->scroll_x - (int) view->hadjustment->value; + view->scroll_x = (int) view->hadjustment->value; + } else { + view->scroll_x = 0; + } + + if (view->vadjustment) { + dy = view->scroll_y - (int) view->vadjustment->value; + view->scroll_y = (int) view->vadjustment->value; + } else { + view->scroll_y = 0; + } + + children = gtk_container_get_children (GTK_CONTAINER (view)); + for (l = children; l && l->data; l = g_list_next (l)) { + gint child_x, child_y; + GtkWidget *child = (GtkWidget *)l->data; + + gtk_container_child_get (GTK_CONTAINER (view), + child, + "x", &child_x, + "y", &child_y, + NULL); + gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy); + } + g_list_free (children); + + if (view->pending_resize) + gtk_widget_queue_draw (GTK_WIDGET (view)); + else + gdk_window_scroll (view->layout.bin_window, dx, dy); + + gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); + ev_view_handle_cursor_over_xy (view, x, y); + + if (view->document) + view_update_range_and_current_page (view); +} + +GtkWidget* +ev_view_new (void) +{ + GtkWidget *view; + + view = g_object_new (EV_TYPE_VIEW, NULL); + + return view; +} + +static void +setup_caches (EvView *view) +{ + view->page_cache = ev_page_cache_get (view->document); + g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view); + view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document); + g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view); + page_changed_cb (view->page_cache, + ev_page_cache_get_current_page (view->page_cache), + view); +} + +static void +clear_caches (EvView *view) +{ + if (view->pixbuf_cache) { + g_object_unref (view->pixbuf_cache); + view->pixbuf_cache = NULL; + } + + if (view->page_cache) { + view->page_cache = NULL; + } +} + +void +ev_view_set_loading (EvView *view, + gboolean loading) +{ + view->loading = loading; + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +static gboolean +ev_view_autoscroll_cb (EvView *view) +{ + gdouble speed, value; + + /* If the user stops autoscrolling, autoscrolling will be + * set to false but the timeout will continue; stop the timeout: */ + if (!view->scroll_info.autoscrolling) { + view->scroll_info.timeout_id = 0; + return FALSE; + } + + if (view->scroll_info.last_y > view->scroll_info.start_y && + (view->scroll_info.last_y < view->scroll_info.start_y)) + return TRUE; + + /* Replace 100 with your speed of choice: The lower the faster. + * Replace 3 with another speed of choice: The higher, the faster it accelerated + * based on the distance of the starting point from the mouse + * (All also effected by the timeout interval of this callback) */ + + if (view->scroll_info.start_y > view->scroll_info.last_y) + speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3); + else + speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3); + + value = gtk_adjustment_get_value (view->vadjustment); + value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size); + gtk_adjustment_set_value (view->vadjustment, value); + + return TRUE; + +} + +void +ev_view_autoscroll_start (EvView *view) +{ + gint x, y; + + g_return_if_fail (EV_IS_VIEW (view)); + + if (view->scroll_info.autoscrolling) + return; + + view->scroll_info.autoscrolling = TRUE; + view->scroll_info.timeout_id = + g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb, + view); + + gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); + ev_view_handle_cursor_over_xy (view, x, y); +} + +void +ev_view_autoscroll_stop (EvView *view) +{ + gint x, y; + + g_return_if_fail (EV_IS_VIEW (view)); + + if (!view->scroll_info.autoscrolling) + return; + + view->scroll_info.autoscrolling = FALSE; + if (view->scroll_info.timeout_id) { + g_source_remove (view->scroll_info.timeout_id); + view->scroll_info.timeout_id = 0; + } + + gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y); + ev_view_handle_cursor_over_xy (view, x, y); +} + +void +ev_view_set_document (EvView *view, + EvDocument *document) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + view->loading = FALSE; + + if (document != view->document) { + clear_caches (view); + + if (view->document) { + g_object_unref (view->document); + view->page_cache = NULL; + } + + view->document = document; + view->find_result = 0; + + if (view->document) { + g_object_ref (view->document); + setup_caches (view); + } + + gtk_widget_queue_resize (GTK_WIDGET (view)); + } +} + +static void +ev_view_reload_page (EvView *view, + gint page, + GdkRegion *region) +{ + ev_pixbuf_cache_reload_page (view->pixbuf_cache, + region, + page, + view->rotation, + view->scale); +} + +void +ev_view_reload (EvView *view) +{ + ev_pixbuf_cache_clear (view->pixbuf_cache); + view_update_range_and_current_page (view); +} + +/*** Zoom and sizing mode ***/ + +#define EPSILON 0.0000001 +void +ev_view_set_zoom (EvView *view, + double factor, + gboolean relative) +{ + double scale; + + if (relative) + scale = view->scale * factor; + else + scale = factor; + + scale = CLAMP (scale, + view->sizing_mode == EV_SIZING_FREE ? view->min_scale : 0, + view->max_scale); + + if (ABS (view->scale - scale) < EPSILON) + return; + + if (view->loading_text) { + cairo_surface_destroy (view->loading_text); + view->loading_text = NULL; + } + + view->scale = scale; + view->pending_resize = TRUE; + + gtk_widget_queue_resize (GTK_WIDGET (view)); + + g_object_notify (G_OBJECT (view), "zoom"); +} + +double +ev_view_get_zoom (EvView *view) +{ + return view->scale; +} + +void +ev_view_set_screen_dpi (EvView *view, + gdouble dpi) +{ + g_return_if_fail (EV_IS_VIEW (view)); + g_return_if_fail (dpi > 0); + + view->dpi = dpi; + view->min_scale = MIN_SCALE * dpi / 72.0; + view->max_scale = MAX_SCALE * dpi / 72.0; +} + +gboolean +ev_view_get_continuous (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + return view->continuous; +} + +void +ev_view_set_continuous (EvView *view, + gboolean continuous) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + continuous = continuous != FALSE; + + if (view->continuous != continuous) { + view->continuous = continuous; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + gtk_widget_queue_resize (GTK_WIDGET (view)); + } + + g_object_notify (G_OBJECT (view), "continuous"); +} + +gboolean +ev_view_get_dual_page (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + return view->dual_page; +} + +void +ev_view_set_dual_page (EvView *view, + gboolean dual_page) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + dual_page = dual_page != FALSE; + + if (view->dual_page == dual_page) + return; + + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + view->dual_page = dual_page; + /* FIXME: if we're keeping the pixbuf cache around, we should extend the + * preload_cache_size to be 2 if dual_page is set. + */ + gtk_widget_queue_resize (GTK_WIDGET (view)); + + g_object_notify (G_OBJECT (view), "dual-page"); +} + +void +ev_view_set_fullscreen (EvView *view, + gboolean fullscreen) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + fullscreen = fullscreen != FALSE; + + if (view->fullscreen == fullscreen) + return; + + view->fullscreen = fullscreen; + gtk_widget_queue_resize (GTK_WIDGET (view)); + + g_object_notify (G_OBJECT (view), "fullscreen"); +} + +gboolean +ev_view_get_fullscreen (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + return view->fullscreen; +} + +void +ev_view_set_presentation (EvView *view, + gboolean presentation) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + presentation = presentation != FALSE; + + if (view->presentation == presentation) + return; + + if (!presentation) + view->presentation_state = EV_PRESENTATION_NORMAL; + + view->presentation = presentation; + view->pending_scroll = SCROLL_TO_PAGE_POSITION; + + if (presentation) { + view->sizing_mode_saved = view->sizing_mode; + view->scale_saved = view->scale; + ev_view_set_sizing_mode (view, EV_SIZING_BEST_FIT); + } else { + ev_view_set_sizing_mode (view, view->sizing_mode_saved); + ev_view_set_zoom (view, view->scale_saved, FALSE); + } + + gtk_widget_queue_resize (GTK_WIDGET (view)); + + if (presentation) + ev_view_presentation_transition_start (view); + else { + ev_view_presentation_transition_stop (view); + + if (view->animation) { + /* stop any running animation */ + ev_view_transition_animation_cancel (view->animation, view); + } + } + + if (GTK_WIDGET_REALIZED (view)) { + if (view->presentation) + gdk_window_set_background (view->layout.bin_window, + >K_WIDGET (view)->style->black); + else + gdk_window_set_background (view->layout.bin_window, + >K_WIDGET (view)->style->mid [GTK_STATE_NORMAL]); + } + + g_object_notify (G_OBJECT (view), "presentation"); +} + +gboolean +ev_view_get_presentation (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + return view->presentation; +} + +static gboolean +transition_next_page (EvView *view) +{ + ev_view_next_page (view); + + return FALSE; +} + +static void +ev_view_presentation_transition_stop (EvView *view) +{ + if (view->trans_timeout_id > 0) + g_source_remove (view->trans_timeout_id); + view->trans_timeout_id = 0; +} + +static void +ev_view_presentation_transition_start (EvView *view) +{ + gdouble duration; + + if (!EV_IS_DOCUMENT_TRANSITION (view->document)) + return; + + ev_view_presentation_transition_stop (view); + + duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document), + view->current_page); + if (duration > 0) { + view->trans_timeout_id = + g_timeout_add_seconds (duration, + (GSourceFunc) transition_next_page, + view); + } +} + +void +ev_view_set_sizing_mode (EvView *view, + EvSizingMode sizing_mode) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + if (view->sizing_mode == sizing_mode) + return; + + view->sizing_mode = sizing_mode; + gtk_widget_queue_resize (GTK_WIDGET (view)); + + g_object_notify (G_OBJECT (view), "sizing-mode"); +} + +EvSizingMode +ev_view_get_sizing_mode (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE); + + return view->sizing_mode; +} + +gboolean +ev_view_can_zoom_in (EvView *view) +{ + return view->scale * ZOOM_IN_FACTOR <= view->max_scale; +} + +gboolean +ev_view_can_zoom_out (EvView *view) +{ + return view->scale * ZOOM_OUT_FACTOR >= view->min_scale; +} + +void +ev_view_zoom_in (EvView *view) +{ + g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); + + if (view->presentation) + return; + + view->pending_scroll = SCROLL_TO_CENTER; + ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE); +} + +void +ev_view_zoom_out (EvView *view) +{ + g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); + + if (view->presentation) + return; + + view->pending_scroll = SCROLL_TO_CENTER; + ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE); +} + +void +ev_view_rotate_right (EvView *view) +{ + int rotation = view->rotation + 90; + + if (rotation >= 360) { + rotation -= 360; + } + + ev_view_set_rotation (view, rotation); +} + +void +ev_view_rotate_left (EvView *view) +{ + int rotation = view->rotation - 90; + + if (rotation < 0) { + rotation += 360; + } + + ev_view_set_rotation (view, rotation); +} + +void +ev_view_set_rotation (EvView *view, int rotation) +{ + view->rotation = rotation; + + if (view->pixbuf_cache) { + ev_pixbuf_cache_clear (view->pixbuf_cache); + gtk_widget_queue_resize (GTK_WIDGET (view)); + } + + if (rotation != 0) + clear_selection (view); + + g_object_notify (G_OBJECT (view), "rotation"); +} + +int +ev_view_get_rotation (EvView *view) +{ + return view->rotation; +} + +static double +zoom_for_size_fit_width (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width) +{ + double scale; + + scale = (double)target_width / doc_width; + + if (doc_height * scale > target_height) + scale = (double) (target_width - vsb_width) / doc_width; + + return scale; +} + +static double +zoom_for_size_fit_height (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_height) +{ + double scale; + + scale = (double)target_height / doc_height; + + if (doc_width * scale > target_width) + scale = (double) (target_height - vsb_height) / doc_height; + + return scale; +} + +static double +zoom_for_size_best_fit (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width, + int hsb_width) +{ + double w_scale; + double h_scale; + + w_scale = (double)target_width / doc_width; + h_scale = (double)target_height / doc_height; + + if (doc_height * w_scale > target_height) + w_scale = (double) (target_width - vsb_width) / doc_width; + if (doc_width * h_scale > target_width) + h_scale = (double) (target_height - hsb_width) / doc_height; + + return MIN (w_scale, h_scale); +} + + +static void +ev_view_zoom_for_size_presentation (EvView *view, + int width, + int height) +{ + int doc_width, doc_height; + gdouble scale; + + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->rotation, + 1.0, + &doc_width, + &doc_height); + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0); + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + int doc_width, doc_height; + GtkBorder border; + gdouble scale; + + ev_page_cache_get_max_width (view->page_cache, + view->rotation, + 1.0, + &doc_width); + ev_page_cache_get_max_height (view->page_cache, + view->rotation, + 1.0, + &doc_height); + compute_border (view, doc_width, doc_height, &border); + + doc_width = doc_width * 2; + width -= (2 * (border.left + border.right) + 3 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing - 1); + + /* FIXME: We really need to calculate the overall height here, not the + * page height. We assume there's always a vertical scrollbar for + * now. We need to fix this. */ + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_continuous (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + int doc_width, doc_height; + GtkBorder border; + gdouble scale; + + ev_page_cache_get_max_width (view->page_cache, + view->rotation, + 1.0, + &doc_width); + ev_page_cache_get_max_height (view->page_cache, + view->rotation, + 1.0, + &doc_height); + compute_border (view, doc_width, doc_height, &border); + + width -= (border.left + border.right + 2 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing - 1); + + /* FIXME: We really need to calculate the overall height here, not the + * page height. We assume there's always a vertical scrollbar for + * now. We need to fix this. */ + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + GtkBorder border; + gint doc_width, doc_height; + gdouble scale; + gint other_page; + + other_page = view->current_page ^ 1; + + /* Find the largest of the two. */ + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->rotation, + 1.0, + &doc_width, &doc_height); + + if (other_page < ev_page_cache_get_n_pages (view->page_cache)) { + gint width_2, height_2; + ev_page_cache_get_size (view->page_cache, + other_page, + view->rotation, + 1.0, + &width_2, &height_2); + if (width_2 > doc_width) + doc_width = width_2; + if (height_2 > doc_height) + doc_height = height_2; + } + compute_border (view, doc_width, doc_height, &border); + + doc_width = doc_width * 2; + width -= ((border.left + border.right)* 2 + 3 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_single_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + int doc_width, doc_height; + GtkBorder border; + gdouble scale; + + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->rotation, + 1.0, + &doc_width, + &doc_height); + /* Get an approximate border */ + compute_border (view, width, height, &border); + + width -= (border.left + border.right + 2 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +void +ev_view_set_zoom_for_size (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + g_return_if_fail (EV_IS_VIEW (view)); + g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH || + view->sizing_mode == EV_SIZING_BEST_FIT); + g_return_if_fail (width >= 0); + g_return_if_fail (height >= 0); + + if (view->document == NULL) + return; + + if (view->presentation) + ev_view_zoom_for_size_presentation (view, width, height); + else if (view->continuous && view->dual_page) + ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height); + else if (view->continuous) + ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height); + else if (view->dual_page) + ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height); + else + ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height); +} + +/*** Find ***/ +static gint +ev_view_find_get_n_results (EvView *view, gint page) +{ + return view->find_pages ? g_list_length (view->find_pages[page]) : 0; +} + +static EvRectangle * +ev_view_find_get_result (EvView *view, gint page, gint result) +{ + return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL; +} + +static void +jump_to_find_result (EvView *view) +{ + gint n_results; + gint page = view->current_page; + + n_results = ev_view_find_get_n_results (view, page); + + if (n_results > 0 && view->find_result < n_results) { + EvRectangle *rect; + GdkRectangle view_rect; + + rect = ev_view_find_get_result (view, page, view->find_result); + doc_rect_to_view_rect (view, page, rect, &view_rect); + ensure_rectangle_is_visible (view, &view_rect); + view->jump_to_find_result = FALSE; + } +} + +/** + * jump_to_find_page + * @view: #EvView instance + * @direction: Direction to look + * @shift: Shift from current page + * + * Jumps to the first page that has occurences of searched word. + * Uses a direction where to look and a shift from current page. + * + */ +static void +jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift) +{ + int n_pages, i; + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + for (i = 0; i < n_pages; i++) { + int page; + + if (direction == EV_VIEW_FIND_NEXT) + page = view->current_page + i; + else + page = view->current_page - i; + page += shift; + + if (page >= n_pages) { + page = page - n_pages; + } else if (page < 0) + page = page + n_pages; + + if (ev_view_find_get_n_results (view, page) > 0) { + ev_page_cache_set_current_page (view->page_cache, page); + break; + } + } +} + +void +ev_view_find_changed (EvView *view, GList **results, gint page) +{ + view->find_pages = results; + + if (view->jump_to_find_result == TRUE) { + jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0); + jump_to_find_result (view); + } + + if (view->current_page == page) + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +void +ev_view_find_next (EvView *view) +{ + gint n_results; + + n_results = ev_view_find_get_n_results (view, view->current_page); + view->find_result++; + + if (view->find_result >= n_results) { + view->find_result = 0; + jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1); + jump_to_find_result (view); + } else { + jump_to_find_result (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} + +void +ev_view_find_previous (EvView *view) +{ + view->find_result--; + + if (view->find_result < 0) { + jump_to_find_page (view, EV_VIEW_FIND_PREV, -1); + view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1); + jump_to_find_result (view); + } else { + jump_to_find_result (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} + +void +ev_view_find_search_changed (EvView *view) +{ + /* search string has changed, focus on new search result */ + view->jump_to_find_result = TRUE; + view->find_pages = NULL; +} + +void +ev_view_find_set_highlight_search (EvView *view, gboolean value) +{ + view->highlight_find_results = value; + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +void +ev_view_find_cancel (EvView *view) +{ + view->find_pages = NULL; +} + +/*** Selections ***/ + +/* compute_new_selection_rect/text calculates the area currently selected by + * view_rect. each handles a different mode; + */ +static GList * +compute_new_selection_rect (EvView *view, + GdkPoint *start, + GdkPoint *stop) +{ + GdkRectangle view_rect; + int n_pages, i; + GList *list = NULL; + + g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE); + + view_rect.x = MIN (start->x, stop->x); + view_rect.y = MIN (start->y, stop->y); + view_rect.width = MAX (start->x, stop->x) - view_rect.x; + view_rect.width = MAX (start->y, stop->y) - view_rect.y; + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + for (i = 0; i < n_pages; i++) { + GdkRectangle page_area; + GtkBorder border; + + if (get_page_extents (view, i, &page_area, &border)) { + GdkRectangle overlap; + + if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) { + EvViewSelection *selection; + + selection = g_new0 (EvViewSelection, 1); + selection->page = i; + view_rect_to_doc_rect (view, &overlap, &page_area, + &(selection->rect)); + + list = g_list_append (list, selection); + } + } + } + + return list; +} + +static gboolean +gdk_rectangle_point_in (GdkRectangle *rectangle, + GdkPoint *point) +{ + return rectangle->x <= point->x && + rectangle->y <= point->y && + point->x < rectangle->x + rectangle->width && + point->y < rectangle->y + rectangle->height; +} + +static GList * +compute_new_selection_text (EvView *view, + EvSelectionStyle style, + GdkPoint *start, + GdkPoint *stop) +{ + int n_pages, i, first, last; + GList *list = NULL; + EvViewSelection *selection; + gint width, height; + int start_page, end_page; + + g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT); + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + /* First figure out the range of pages the selection + * affects. */ + first = n_pages; + last = 0; + if (view->continuous) { + start_page = 0; + end_page = n_pages; + } else if (view->dual_page) { + start_page = view->start_page; + end_page = view->end_page + 1; + } else { + start_page = view->current_page; + end_page = view->current_page + 1; + } + + for (i = start_page; i < end_page; i++) { + GdkRectangle page_area; + GtkBorder border; + + get_page_extents (view, i, &page_area, &border); + if (gdk_rectangle_point_in (&page_area, start) || + gdk_rectangle_point_in (&page_area, stop)) { + if (first == n_pages) + first = i; + last = i; + } + + } + + /* Now create a list of EvViewSelection's for the affected + * pages. This could be an empty list, a list of just one + * page or a number of pages.*/ + for (i = first; i < last + 1; i++) { + GdkRectangle page_area; + GtkBorder border; + GdkPoint *point; + + ev_page_cache_get_size (view->page_cache, i, + view->rotation, + 1.0, &width, &height); + + selection = g_new0 (EvViewSelection, 1); + selection->page = i; + selection->style = style; + selection->rect.x1 = selection->rect.y1 = 0; + selection->rect.x2 = width; + selection->rect.y2 = height; + + get_page_extents (view, i, &page_area, &border); + + if (gdk_rectangle_point_in (&page_area, start)) + point = start; + else + point = stop; + + if (i == first) + view_point_to_doc_point (view, point, &page_area, + &selection->rect.x1, + &selection->rect.y1); + + /* If the selection is contained within just one page, + * make sure we don't write 'start' into both points + * in selection->rect. */ + if (first == last) + point = stop; + + if (i == last) + view_point_to_doc_point (view, point, &page_area, + &selection->rect.x2, + &selection->rect.y2); + + list = g_list_append (list, selection); + } + + return list; +} + +/* This function takes the newly calculated list, and figures out which regions + * have changed. It then queues a redraw approporiately. + */ +static void +merge_selection_region (EvView *view, + GList *new_list) +{ + GList *old_list; + GList *new_list_ptr, *old_list_ptr; + + /* Update the selection */ + old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache); + g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL); + g_list_free (view->selection_info.selections); + view->selection_info.selections = new_list; + ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list); + g_object_notify (G_OBJECT (view), "has-selection"); + + new_list_ptr = new_list; + old_list_ptr = old_list; + + while (new_list_ptr || old_list_ptr) { + EvViewSelection *old_sel, *new_sel; + int cur_page; + GdkRegion *region = NULL; + + new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL; + old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL; + + /* Assume that the lists are in order, and we run through them + * comparing them, one page at a time. We come out with the + * first page we see. */ + if (new_sel && old_sel) { + if (new_sel->page < old_sel->page) { + new_list_ptr = new_list_ptr->next; + old_sel = NULL; + } else if (new_sel->page > old_sel->page) { + old_list_ptr = old_list_ptr->next; + new_sel = NULL; + } else { + new_list_ptr = new_list_ptr->next; + old_list_ptr = old_list_ptr->next; + } + } else if (new_sel) { + new_list_ptr = new_list_ptr->next; + } else if (old_sel) { + old_list_ptr = old_list_ptr->next; + } + + g_assert (new_sel || old_sel); + + /* is the page we're looking at on the screen?*/ + cur_page = new_sel ? new_sel->page : old_sel->page; + if (cur_page < view->start_page || cur_page > view->end_page) + continue; + + /* seed the cache with a new page. We are going to need the new + * region too. */ + if (new_sel) { + GdkRegion *tmp_region = NULL; + + ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache, + cur_page, + view->scale, + &tmp_region); + + if (tmp_region) { + new_sel->covered_region = gdk_region_copy (tmp_region); + } + } + + /* Now we figure out what needs redrawing */ + if (old_sel && new_sel) { + if (old_sel->covered_region && new_sel->covered_region) { + /* We only want to redraw the areas that have + * changed, so we xor the old and new regions + * and redraw if it's different */ + region = gdk_region_copy (old_sel->covered_region); + gdk_region_xor (region, new_sel->covered_region); + if (gdk_region_empty (region)) { + gdk_region_destroy (region); + region = NULL; + } + } else if (old_sel->covered_region) { + region = gdk_region_copy (old_sel->covered_region); + } else if (new_sel->covered_region) { + region = gdk_region_copy (new_sel->covered_region); + } + } else if (old_sel && !new_sel) { + if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) { + region = gdk_region_copy (old_sel->covered_region); + } + } else if (!old_sel && new_sel) { + if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) { + region = gdk_region_copy (new_sel->covered_region); + } + } else { + g_assert_not_reached (); + } + + /* Redraw the damaged region! */ + if (region) { + GdkRectangle page_area; + GtkBorder border; + + /* I don't know why but the region is smaller + * than expected. This hack fixes it, I guess + * 10 pixels more won't hurt + */ + gdk_region_shrink (region, -5, -5); + + get_page_extents (view, cur_page, &page_area, &border); + gdk_region_offset (region, + page_area.x + border.left - view->scroll_x, + page_area.y + border.top - view->scroll_y); + gdk_window_invalidate_region (view->layout.bin_window, region, TRUE); + gdk_region_destroy (region); + } + } + + /* Free the old list, now that we're done with it. */ + g_list_foreach (old_list, (GFunc) selection_free, NULL); + g_list_free (old_list); +} + +static void +compute_selections (EvView *view, + EvSelectionStyle style, + GdkPoint *start, + GdkPoint *stop) +{ + GList *list; + + if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE) + list = compute_new_selection_rect (view, start, stop); + else + list = compute_new_selection_text (view, style, start, stop); + merge_selection_region (view, list); +} + +/* Free's the selection. It's up to the caller to queue redraws if needed. + */ +static void +selection_free (EvViewSelection *selection) +{ + if (selection->covered_region) + gdk_region_destroy (selection->covered_region); + g_free (selection); +} + +static void +clear_selection (EvView *view) +{ + g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL); + g_list_free (view->selection_info.selections); + view->selection_info.selections = NULL; + view->selection_info.in_selection = FALSE; + if (view->pixbuf_cache) + ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL); + g_object_notify (G_OBJECT (view), "has-selection"); +} + +void +ev_view_select_all (EvView *view) +{ + GList *selections = NULL; + int n_pages, i; + + /* Disable selection on rotated pages for the 0.4.0 series */ + if (view->rotation != 0) + return; + + clear_selection (view); + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + for (i = 0; i < n_pages; i++) { + int width, height; + EvViewSelection *selection; + + ev_page_cache_get_size (view->page_cache, + i, + view->rotation, + 1.0, &width, &height); + + selection = g_new0 (EvViewSelection, 1); + selection->page = i; + selection->style = EV_SELECTION_STYLE_GLYPH; + selection->rect.x1 = selection->rect.y1 = 0; + selection->rect.x2 = width; + selection->rect.y2 = height; + + selections = g_list_append (selections, selection); + } + + merge_selection_region (view, selections); + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +gboolean +ev_view_get_has_selection (EvView *view) +{ + return view->selection_info.selections != NULL; +} + +static char * +get_selected_text (EvView *view) +{ + GString *text; + GList *l; + gchar *normalized_text; + EvRenderContext *rc; + + text = g_string_new (NULL); + rc = ev_render_context_new (NULL, view->rotation, view->scale); + + ev_document_doc_mutex_lock (); + + for (l = view->selection_info.selections; l != NULL; l = l->next) { + EvViewSelection *selection = (EvViewSelection *)l->data; + EvPage *page; + gchar *tmp; + + page = ev_document_get_page (view->document, selection->page); + ev_render_context_set_page (rc, page); + g_object_unref (page); + + tmp = ev_selection_get_selected_text (EV_SELECTION (view->document), + rc, selection->style, + &(selection->rect)); + + g_string_append (text, tmp); + g_free (tmp); + } + + g_object_unref (rc); + + ev_document_doc_mutex_unlock (); + + normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC); + g_string_free (text, TRUE); + return normalized_text; +} + +static void +ev_view_clipboard_copy (EvView *view, + const gchar *text) +{ + GtkClipboard *clipboard; + + clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view), + GDK_SELECTION_CLIPBOARD); + gtk_clipboard_set_text (clipboard, text, -1); +} + +void +ev_view_copy (EvView *ev_view) +{ + char *text; + + if (!EV_IS_SELECTION (ev_view->document)) + return; + + text = get_selected_text (ev_view); + ev_view_clipboard_copy (ev_view, text); + g_free (text); +} + +static void +ev_view_primary_get_cb (GtkClipboard *clipboard, + GtkSelectionData *selection_data, + guint info, + gpointer data) +{ + EvView *ev_view = EV_VIEW (data); + + if (ev_view->link_selected) { + gtk_selection_data_set_text (selection_data, + ev_link_action_get_uri (ev_view->link_selected), + -1); + } else if (EV_IS_SELECTION (ev_view->document) && + ev_view->selection_info.selections) { + gchar *text; + + text = get_selected_text (ev_view); + if (text) { + gtk_selection_data_set_text (selection_data, text, -1); + g_free (text); + } + } +} + +static void +ev_view_primary_clear_cb (GtkClipboard *clipboard, + gpointer data) +{ + EvView *view = EV_VIEW (data); + + clear_selection (view); + clear_link_selected (view); +} + +static void +ev_view_update_primary_selection (EvView *ev_view) +{ + GtkClipboard *clipboard; + + clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), + GDK_SELECTION_PRIMARY); + + if (ev_view->selection_info.selections || ev_view->link_selected) { + if (!gtk_clipboard_set_with_owner (clipboard, + clipboard_targets, + G_N_ELEMENTS (clipboard_targets), + ev_view_primary_get_cb, + ev_view_primary_clear_cb, + G_OBJECT (ev_view))) + ev_view_primary_clear_cb (clipboard, ev_view); + } else { + if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view)) + gtk_clipboard_clear (clipboard); + } +} + +static void +clear_link_selected (EvView *view) +{ + if (view->link_selected) { + g_object_unref (view->link_selected); + view->link_selected = NULL; + } +} + +void +ev_view_copy_link_address (EvView *view, + EvLinkAction *action) +{ + clear_link_selected (view); + + ev_view_clipboard_copy (view, ev_link_action_get_uri (action)); + + view->link_selected = g_object_ref (action); + ev_view_update_primary_selection (view); +} + +/*** Cursor operations ***/ + +static GdkCursor * +ev_view_create_invisible_cursor(void) +{ + GdkBitmap *empty; + GdkColor black = { 0, 0, 0, 0 }; + static char bits[] = { 0x00 }; + + empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1); + + return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0); +} + +static void +ev_view_set_cursor (EvView *view, EvViewCursor new_cursor) +{ + GdkCursor *cursor = NULL; + GdkDisplay *display; + GtkWidget *widget; + + if (view->cursor == new_cursor) { + return; + } + + widget = gtk_widget_get_toplevel (GTK_WIDGET (view)); + display = gtk_widget_get_display (widget); + view->cursor = new_cursor; + + switch (new_cursor) { + case EV_VIEW_CURSOR_NORMAL: + gdk_window_set_cursor (view->layout.bin_window, NULL); + break; + case EV_VIEW_CURSOR_IBEAM: + cursor = gdk_cursor_new_for_display (display, GDK_XTERM); + break; + case EV_VIEW_CURSOR_LINK: + cursor = gdk_cursor_new_for_display (display, GDK_HAND2); + break; + case EV_VIEW_CURSOR_WAIT: + cursor = gdk_cursor_new_for_display (display, GDK_WATCH); + break; + case EV_VIEW_CURSOR_HIDDEN: + cursor = ev_view_create_invisible_cursor (); + break; + case EV_VIEW_CURSOR_DRAG: + cursor = gdk_cursor_new_for_display (display, GDK_FLEUR); + break; + case EV_VIEW_CURSOR_AUTOSCROLL: + cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW); + break; + } + + if (cursor) { + gdk_window_set_cursor (view->layout.bin_window, cursor); + gdk_cursor_unref (cursor); + gdk_flush(); + } +} + +void +ev_view_hide_cursor (EvView *view) +{ + ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN); +} + +void +ev_view_show_cursor (EvView *view) +{ + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); +} + +static void +ev_view_reset_presentation_state (EvView *view) +{ + if (!view->presentation || + view->presentation_state == EV_PRESENTATION_NORMAL) + return; + + view->presentation_state = EV_PRESENTATION_NORMAL; + gdk_window_set_background (view->layout.bin_window, + >K_WIDGET (view)->style->black); + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +gboolean +ev_view_next_page (EvView *view) +{ + int page, n_pages; + + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + if (!view->page_cache) + return FALSE; + + if (view->presentation && + (view->presentation_state == EV_PRESENTATION_BLACK || + view->presentation_state == EV_PRESENTATION_WHITE)) { + ev_view_reset_presentation_state (view); + return FALSE; + } + + if (view->animation) { + ev_view_transition_animation_cancel (view->animation, view); + } + + ev_view_presentation_transition_stop (view); + ev_view_reset_presentation_state (view); + + page = ev_page_cache_get_current_page (view->page_cache); + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + if (view->dual_page && !view->presentation) + page = page + 2; + else + page = page + 1; + + if (page < n_pages) { + ev_page_cache_set_current_page (view->page_cache, page); + return TRUE; + } else if (view->presentation && page == n_pages) { + view->presentation_state = EV_PRESENTATION_END; + gtk_widget_queue_draw (GTK_WIDGET (view)); + return TRUE; + } else if (view->dual_page && page == n_pages) { + ev_page_cache_set_current_page (view->page_cache, page - 1); + return TRUE; + } else { + return FALSE; + } +} + +gboolean +ev_view_previous_page (EvView *view) +{ + int page; + + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + if (!view->page_cache) + return FALSE; + + if (view->presentation && + view->presentation_state == EV_PRESENTATION_END) { + ev_view_reset_presentation_state (view); + return TRUE; + } + + if (view->presentation && + (view->presentation_state == EV_PRESENTATION_BLACK || + view->presentation_state == EV_PRESENTATION_WHITE)) { + ev_view_reset_presentation_state (view); + return FALSE; + } + + if (view->animation) { + ev_view_transition_animation_cancel (view->animation, view); + } + + ev_view_reset_presentation_state (view); + + page = ev_page_cache_get_current_page (view->page_cache); + + if (view->dual_page && !view->presentation) + page = page - 2; + else + page = page - 1; + + if (page >= 0) { + ev_page_cache_set_current_page (view->page_cache, page); + return TRUE; + } else if (ev_view_get_dual_page (view) && page == -1) { + ev_page_cache_set_current_page (view->page_cache, 0); + return TRUE; + } else { + return FALSE; + } +} + +/*** Enum description for usage in signal ***/ + +GType +ev_sizing_mode_get_type (void) +{ + static GType etype = 0; + if (etype == 0) { + static const GEnumValue values[] = { + { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" }, + { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" }, + { EV_SIZING_FREE, "EV_SIZING_FREE", "free" }, + { 0, NULL, NULL } + }; + etype = g_enum_register_static ("EvSizingMode", values); + } + return etype; +} + +void +ev_view_update_view_size (EvView *view, GtkScrolledWindow * scrolled_window) +{ + int width, height; + GtkRequisition vsb_requisition; + GtkRequisition hsb_requisition; + int scrollbar_spacing; + + /* Calculate the width available for the content */ + width = GTK_WIDGET (scrolled_window)->allocation.width; + height = GTK_WIDGET (scrolled_window)->allocation.height; + + if (gtk_scrolled_window_get_shadow_type (scrolled_window) == GTK_SHADOW_IN + && view) { + width -= 2 * GTK_WIDGET(view)->style->xthickness; + height -= 2 * GTK_WIDGET(view)->style->ythickness; + } + + gtk_widget_size_request (scrolled_window->vscrollbar, &vsb_requisition); + gtk_widget_size_request (scrolled_window->hscrollbar, &hsb_requisition); + gtk_widget_style_get (GTK_WIDGET (scrolled_window), + "scrollbar_spacing", + &scrollbar_spacing, + NULL); + + if (EV_IS_VIEW(view)) { + ev_view_set_zoom_for_size (EV_VIEW (view), + MAX (1, width), + MAX (1, height), + vsb_requisition.width + scrollbar_spacing, + hsb_requisition.height + scrollbar_spacing); + } +} diff --git a/libview/ev-view.h b/libview/ev-view.h new file mode 100644 index 0000000..af12baf --- /dev/null +++ b/libview/ev-view.h @@ -0,0 +1,145 @@ +/* this file is part of evince, a gnome document viewer + * + * Copyright (C) 2004 Red Hat, Inc + * + * Evince is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Evince is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef __EV_VIEW_H__ +#define __EV_VIEW_H__ + +#include <gtk/gtk.h> + +#include "ev-document.h" +#include "ev-link.h" + +G_BEGIN_DECLS + +#define EV_TYPE_VIEW (ev_view_get_type ()) +#define EV_VIEW(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_VIEW, EvView)) +#define EV_IS_VIEW(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EV_TYPE_VIEW)) + +#define EV_TYPE_SIZING_MODE (ev_sizing_mode_get_type()) +#define EV_SIZING_MODE_CLASS (g_type_class_peek (EV_TYPE_SIZING_MODE)) + +typedef struct _EvView EvView; +typedef struct _EvViewClass EvViewClass; + + +typedef enum { + EV_SIZING_BEST_FIT, + EV_SIZING_FIT_WIDTH, + EV_SIZING_FREE, +} EvSizingMode; + +typedef enum { + EV_VIEW_SELECTION_TEXT, + EV_VIEW_SELECTION_RECTANGLE, +} EvViewSelectionMode; + +GType ev_view_get_type (void) G_GNUC_CONST; +GType ev_sizing_mode_get_type (void) G_GNUC_CONST; + +GtkWidget* ev_view_new (void); +void ev_view_set_document (EvView *view, + EvDocument *document); +void ev_view_set_loading (EvView *view, + gboolean loading); +void ev_view_reload (EvView *view); + +/* Clipboard */ +void ev_view_copy (EvView *view); +void ev_view_copy_link_address (EvView *view, + EvLinkAction *action); +void ev_view_select_all (EvView *view); +gboolean ev_view_get_has_selection (EvView *view); + +/* sizing and behavior */ +/* These are all orthoganal to each other, except 'presentation' trumps all + * other behaviors + */ +gboolean ev_view_get_continuous (EvView *view); +void ev_view_set_continuous (EvView *view, + gboolean continuous); +gboolean ev_view_get_dual_page (EvView *view); +void ev_view_set_dual_page (EvView *view, + gboolean dual_page); +void ev_view_set_fullscreen (EvView *view, + gboolean fullscreen); +gboolean ev_view_get_fullscreen (EvView *view); +void ev_view_set_presentation (EvView *view, + gboolean presentation); +gboolean ev_view_get_presentation (EvView *view); +void ev_view_set_sizing_mode (EvView *view, + EvSizingMode mode); +EvSizingMode ev_view_get_sizing_mode (EvView *view); + + +/* Page size */ +gboolean ev_view_can_zoom_in (EvView *view); +void ev_view_zoom_in (EvView *view); +gboolean ev_view_can_zoom_out (EvView *view); +void ev_view_zoom_out (EvView *view); +void ev_view_set_zoom (EvView *view, + double factor, + gboolean relative); +void ev_view_set_zoom_for_size (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +double ev_view_get_zoom (EvView *view); +void ev_view_set_screen_dpi (EvView *view, + gdouble dpi); +void ev_view_rotate_left (EvView *view); +void ev_view_rotate_right (EvView *view); +void ev_view_set_rotation (EvView *view, + int rotation); +int ev_view_get_rotation (EvView *view); + +/* Find */ +void ev_view_find_next (EvView *view); +void ev_view_find_previous (EvView *view); +void ev_view_find_search_changed (EvView *view); +void ev_view_find_set_highlight_search (EvView *view, + gboolean value); +void ev_view_find_changed (EvView *view, + GList **results, + gint page); +void ev_view_find_cancel (EvView *view); + +/* Cursor */ +void ev_view_hide_cursor (EvView *view); +void ev_view_show_cursor (EvView *view); + +/* Navigation */ +void ev_view_scroll (EvView *view, + GtkScrollType scroll, + gboolean horizontal); +void ev_view_handle_link (EvView *view, + EvLink *link); +gboolean ev_view_next_page (EvView *view); +gboolean ev_view_previous_page (EvView *view); +gchar* ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest); + +void ev_view_update_view_size (EvView *view, + GtkScrolledWindow *scrolled_window); + +void ev_view_autoscroll_start (EvView *view); +void ev_view_autoscroll_stop (EvView *view); + +G_END_DECLS + +#endif /* __EV_VIEW_H__ */ |