From faace27fc6850ac153a41d47e51dfbd589dc1411 Mon Sep 17 00:00:00 2001 From: Carlos Garcia Campos Date: Wed, 08 Apr 2009 13:10:12 +0000 Subject: Add evince-previewer as a separate applicaton that implements the preview 2009-04-08 Carlos Garcia Campos * configure.ac: * Makefile.am: * data/Makefile.am: * previewer/Makefile.am: * previewer/ev-previewer-window.[ch]: * previewer/ev-previewer.c: Add evince-previewer as a separate applicaton that implements the preview mode. svn path=/trunk/; revision=3578 --- (limited to 'previewer/ev-previewer-window.c') diff --git a/previewer/ev-previewer-window.c b/previewer/ev-previewer-window.c new file mode 100644 index 0000000..cbddbd8 --- /dev/null +++ b/previewer/ev-previewer-window.c @@ -0,0 +1,572 @@ +/* ev-previewer-window.c: + * this file is part of evince, a gnome document viewer + * + * Copyright (C) 2009 Carlos Garcia Campos + * + * 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 + +#include +#include +#include +#include "ev-stock-icons.h" +#include "ev-page-action.h" + +#include "ev-previewer-window.h" + +struct _EvPreviewerWindow { + GtkWindow base_instance; + + EvDocument *document; + + GtkActionGroup *action_group; + GtkUIManager *ui_manager; + + GtkWidget *swindow; + EvView *view; + gdouble dpi; + + /* Printing */ + GtkPrintSettings *print_settings; + GtkPageSetup *print_page_setup; + GtkPrinter *printer; + gchar *print_job_title; + gchar *source_file; +}; + +struct _EvPreviewerWindowClass { + GtkWindowClass base_class; +}; + +G_DEFINE_TYPE (EvPreviewerWindow, ev_previewer_window, GTK_TYPE_WINDOW) + +static gdouble +get_screen_dpi (GtkWindow *window) +{ + GdkScreen *screen; + gdouble xdpi, ydpi; + + screen = gtk_window_get_screen (window); + + xdpi = 25.4 * gdk_screen_get_width (screen) / gdk_screen_get_width_mm (screen); + ydpi = 25.4 * gdk_screen_get_height (screen) / gdk_screen_get_height_mm (screen); + + return (xdpi + ydpi) / 2.0; +} + +static void +ev_previewer_window_set_view_size (EvPreviewerWindow *window) +{ + gint width, height; + GtkRequisition vsb_requisition; + GtkRequisition hsb_requisition; + gint scrollbar_spacing; + + if (!window->view) + return; + + /* Calculate the width available for the content */ + width = window->swindow->allocation.width; + height = window->swindow->allocation.height; + + if (gtk_scrolled_window_get_shadow_type (GTK_SCROLLED_WINDOW (window->swindow)) == GTK_SHADOW_IN) { + width -= 2 * GTK_WIDGET (window->view)->style->xthickness; + height -= 2 * GTK_WIDGET (window->view)->style->ythickness; + } + + gtk_widget_size_request (GTK_SCROLLED_WINDOW (window->swindow)->vscrollbar, + &vsb_requisition); + gtk_widget_size_request (GTK_SCROLLED_WINDOW (window->swindow)->hscrollbar, + &hsb_requisition); + gtk_widget_style_get (window->swindow, + "scrollbar_spacing", + &scrollbar_spacing, + NULL); + + ev_view_set_zoom_for_size (window->view, + MAX (1, width), + MAX (1, height), + vsb_requisition.width + scrollbar_spacing, + hsb_requisition.height + scrollbar_spacing); +} + +static void +ev_previewer_window_error_dialog_run (EvPreviewerWindow *window, + GError *error) +{ + GtkWidget *dialog; + + dialog = gtk_message_dialog_new (GTK_WINDOW (window), + GTK_DIALOG_MODAL | + GTK_DIALOG_DESTROY_WITH_PARENT, + GTK_MESSAGE_ERROR, + GTK_BUTTONS_CLOSE, + "%s", _("Failed to print document")); + gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog), + "%s", error->message); + gtk_dialog_run (GTK_DIALOG (dialog)); + gtk_widget_destroy (dialog); +} + +static void +ev_previewer_window_previous_page (GtkAction *action, + EvPreviewerWindow *window) +{ + ev_view_previous_page (window->view); +} + +static void +ev_previewer_window_next_page (GtkAction *action, + EvPreviewerWindow *window) +{ + ev_view_next_page (window->view); +} + +static void +ev_previewer_window_zoom_in (GtkAction *action, + EvPreviewerWindow *window) +{ + ev_view_set_sizing_mode (window->view, EV_SIZING_FREE); + ev_view_zoom_in (window->view); +} + +static void +ev_previewer_window_zoom_out (GtkAction *action, + EvPreviewerWindow *window) +{ + ev_view_set_sizing_mode (window->view, EV_SIZING_FREE); + ev_view_zoom_out (window->view); +} + +static void +ev_previewer_window_zoom_best_fit (GtkToggleAction *action, + EvPreviewerWindow *window) +{ + if (gtk_toggle_action_get_active (action)) { + ev_view_set_sizing_mode (window->view, EV_SIZING_BEST_FIT); + ev_previewer_window_set_view_size (window); + } else { + ev_view_set_sizing_mode (window->view, EV_SIZING_FREE); + } +} + +static void +ev_previewer_window_zoom_page_width (GtkToggleAction *action, + EvPreviewerWindow *window) +{ + if (gtk_toggle_action_get_active (action)) { + ev_view_set_sizing_mode (window->view, EV_SIZING_FIT_WIDTH); + ev_previewer_window_set_view_size (window); + } else { + ev_view_set_sizing_mode (window->view, EV_SIZING_FREE); + } +} + +static void +ev_previewer_window_action_page_activated (GtkAction *action, + EvLink *link, + EvPreviewerWindow *window) +{ + ev_view_handle_link (window->view, link); + gtk_widget_grab_focus (GTK_WIDGET (window->view)); +} + +static void +ev_previewer_window_print_finished (GtkPrintJob *print_job, + EvPreviewerWindow *window, + GError *error) +{ + if (error) { + ev_previewer_window_error_dialog_run (window, error); + } + + g_object_unref (print_job); + gtk_widget_destroy (GTK_WIDGET (window)); +} + +static void +ev_previewer_window_do_print (EvPreviewerWindow *window) +{ + GtkPrintJob *job; + GError *error = NULL; + + job = gtk_print_job_new (window->print_job_title ? + window->print_job_title : + window->source_file, + window->printer, + window->print_settings, + window->print_page_setup); + if (gtk_print_job_set_source_file (job, window->source_file, &error)) { + gtk_print_job_send (job, + (GtkPrintJobCompleteFunc)ev_previewer_window_print_finished, + window, NULL); + } else { + ev_previewer_window_error_dialog_run (window, error); + g_error_free (error); + } + + gtk_widget_hide (GTK_WIDGET (window)); +} + +static void +ev_previewer_window_enumerate_finished (EvPreviewerWindow *window) +{ + if (window->printer) { + ev_previewer_window_do_print (window); + } else { + GError *error = NULL; + + g_set_error (&error, + GTK_PRINT_ERROR, + GTK_PRINT_ERROR_GENERAL, + _("The selected printer '%s' could not be found"), + gtk_print_settings_get_printer (window->print_settings)); + + ev_previewer_window_error_dialog_run (window, error); + g_error_free (error); + } +} + +static gboolean +ev_previewer_window_enumerate_printers (GtkPrinter *printer, + EvPreviewerWindow *window) +{ + const gchar *printer_name; + + printer_name = gtk_print_settings_get_printer (window->print_settings); + if ((printer_name + && strcmp (printer_name, gtk_printer_get_name (printer)) == 0) || + (!printer_name && gtk_printer_is_default (printer))) { + if (window->printer) + g_object_unref (window->printer); + window->printer = g_object_ref (printer); + + return TRUE; /* we're done */ + } + + return FALSE; /* continue the enumeration */ +} + +static void +ev_previewer_window_print (GtkAction *action, + EvPreviewerWindow *window) +{ + if (!window->print_settings) + window->print_settings = gtk_print_settings_new (); + if (!window->print_page_setup) + window->print_page_setup = gtk_page_setup_new (); + gtk_enumerate_printers ((GtkPrinterFunc)ev_previewer_window_enumerate_printers, + window, + (GDestroyNotify)ev_previewer_window_enumerate_finished, + FALSE); +} + +static const GtkActionEntry action_entries[] = { + { "GoPreviousPage", GTK_STOCK_GO_UP, N_("_Previous Page"), "Page_Up", + N_("Go to the previous page"), + G_CALLBACK (ev_previewer_window_previous_page) }, + { "GoNextPage", GTK_STOCK_GO_DOWN, N_("_Next Page"), "Page_Down", + N_("Go to the next page"), + G_CALLBACK (ev_previewer_window_next_page) }, + { "ViewZoomIn", GTK_STOCK_ZOOM_IN, NULL, "plus", + N_("Enlarge the document"), + G_CALLBACK (ev_previewer_window_zoom_in) }, + { "ViewZoomOut", GTK_STOCK_ZOOM_OUT, NULL, "minus", + N_("Shrink the document"), + G_CALLBACK (ev_previewer_window_zoom_out) }, + { "PreviewPrint", GTK_STOCK_PRINT, N_("Print"), NULL, + N_("Print this document"), + G_CALLBACK (ev_previewer_window_print) } +}; + +static const GtkToggleActionEntry toggle_action_entries[] = { + { "ViewBestFit", EV_STOCK_ZOOM_PAGE, N_("_Best Fit"), NULL, + N_("Make the current document fill the window"), + G_CALLBACK (ev_previewer_window_zoom_best_fit) }, + { "ViewPageWidth", EV_STOCK_ZOOM_WIDTH, N_("Fit Page _Width"), NULL, + N_("Make the current document fill the window width"), + G_CALLBACK (ev_previewer_window_zoom_page_width) } +}; + +/* EvView callbacks */ +static void +view_sizing_mode_changed (EvView *view, + GParamSpec *pspec, + EvPreviewerWindow *window) +{ + EvSizingMode sizing_mode; + GtkAction *action; + + if (!window->view) + return; + + g_object_get (window->view, + "sizing_mode", &sizing_mode, + NULL); + + action = gtk_action_group_get_action (window->action_group, "ViewBestFit"); + g_signal_handlers_block_by_func (action, + G_CALLBACK (ev_previewer_window_zoom_best_fit), + window); + gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), + sizing_mode == EV_SIZING_BEST_FIT); + g_signal_handlers_unblock_by_func (action, + G_CALLBACK (ev_previewer_window_zoom_best_fit), + window); + + action = gtk_action_group_get_action (window->action_group, "ViewPageWidth"); + g_signal_handlers_block_by_func (action, + G_CALLBACK (ev_previewer_window_zoom_page_width), + window); + gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), + sizing_mode == EV_SIZING_FIT_WIDTH); + g_signal_handlers_unblock_by_func (action, + G_CALLBACK (ev_previewer_window_zoom_page_width), + window); +} + +static void +ev_previewer_window_dispose (GObject *object) +{ + EvPreviewerWindow *window = EV_PREVIEWER_WINDOW (object); + + if (window->document) { + g_object_unref (window->document); + window->document = NULL; + } + + if (window->action_group) { + g_object_unref (window->action_group); + window->action_group = NULL; + } + + if (window->ui_manager) { + g_object_unref (window->ui_manager); + window->ui_manager = NULL; + } + + if (window->print_settings) { + g_object_unref (window->print_settings); + window->print_settings = NULL; + } + + if (window->print_page_setup) { + g_object_unref (window->print_page_setup); + window->print_page_setup = NULL; + } + + if (window->printer) { + g_object_unref (window->printer); + window->printer = NULL; + } + + if (window->print_job_title) { + g_free (window->print_job_title); + window->print_job_title = NULL; + } + + if (window->source_file) { + g_free (window->source_file); + window->source_file = NULL; + } + + G_OBJECT_CLASS (ev_previewer_window_parent_class)->dispose (object); +} + +static void +ev_previewer_window_init (EvPreviewerWindow *window) +{ + GtkWidget *vbox; + GtkWidget *toolbar; + GtkAction *action; + GError *error = NULL; + + gtk_window_set_default_size (GTK_WINDOW (window), 600, 600); + + window->action_group = gtk_action_group_new ("PreviewerActions"); + gtk_action_group_set_translation_domain (window->action_group, NULL); + gtk_action_group_add_actions (window->action_group, action_entries, + G_N_ELEMENTS (action_entries), + window); + gtk_action_group_add_toggle_actions (window->action_group, toggle_action_entries, + G_N_ELEMENTS (toggle_action_entries), + window); + gtk_action_group_set_sensitive (window->action_group, FALSE); + + action = g_object_new (EV_TYPE_PAGE_ACTION, + "name", "PageSelector", + "label", _("Page"), + "tooltip", _("Select Page"), + "icon_name", "text-x-generic", + "visible_overflown", FALSE, + NULL); + g_signal_connect (action, "activate_link", + G_CALLBACK (ev_previewer_window_action_page_activated), + window); + gtk_action_group_add_action (window->action_group, action); + g_object_unref (action); + + window->ui_manager = gtk_ui_manager_new (); + gtk_ui_manager_insert_action_group (window->ui_manager, + window->action_group, 0); + gtk_window_add_accel_group (GTK_WINDOW (window), + gtk_ui_manager_get_accel_group (window->ui_manager)); + if (!gtk_ui_manager_add_ui_from_file (window->ui_manager, + DATADIR"/evince-previewer-ui.xml", + &error)) { + g_warning ("Failed to load ui from evince-previewer-ui.xml: %s", error->message); + g_error_free (error); + } + + vbox = gtk_vbox_new (FALSE, 0); + + toolbar = gtk_ui_manager_get_widget (window->ui_manager, "/PreviewToolbar"); + gtk_box_pack_start (GTK_BOX (vbox), toolbar, FALSE, FALSE, 0); + gtk_widget_show (toolbar); + + window->swindow = gtk_scrolled_window_new (NULL, NULL); + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (window->swindow), + GTK_POLICY_AUTOMATIC, + GTK_POLICY_AUTOMATIC); + + window->view = EV_VIEW (ev_view_new ()); + g_signal_connect (window->view, "notify::sizing-mode", + G_CALLBACK (view_sizing_mode_changed), + window); + g_signal_connect_swapped (window->view, "zoom_invalid", + G_CALLBACK (ev_previewer_window_set_view_size), + window); + + ev_view_set_screen_dpi (window->view, get_screen_dpi (GTK_WINDOW (window))); + ev_view_set_continuous (window->view, FALSE); + ev_view_set_sizing_mode (window->view, EV_SIZING_FIT_WIDTH); + ev_view_set_loading (window->view, TRUE); + view_sizing_mode_changed (window->view, NULL, window); + + gtk_container_add (GTK_CONTAINER (window->swindow), GTK_WIDGET (window->view)); + gtk_widget_show (GTK_WIDGET (window->view)); + + gtk_box_pack_start (GTK_BOX (vbox), window->swindow, TRUE, TRUE, 0); + gtk_widget_show (window->swindow); + + gtk_container_add (GTK_CONTAINER (window), vbox); + gtk_widget_show (vbox); +} + +static void +ev_previewer_window_class_init (EvPreviewerWindowClass *klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + + gobject_class->dispose = ev_previewer_window_dispose; +} + +/* Public methods */ +GtkWidget * +ev_previewer_window_new (void) +{ + return GTK_WIDGET (g_object_new (EV_TYPE_PREVIEWER_WINDOW, NULL)); +} + +void +ev_previewer_window_set_document (EvPreviewerWindow *window, + EvDocument *document) +{ + GtkAction *action; + + g_return_if_fail (EV_IS_PREVIEWER_WINDOW (window)); + g_return_if_fail (EV_IS_DOCUMENT (document)); + + if (window->document) + return; + + action = gtk_action_group_get_action (window->action_group, "PageSelector"); + ev_page_action_set_document (EV_PAGE_ACTION (action), document); + gtk_action_group_set_sensitive (window->action_group, TRUE); + + window->document = g_object_ref (document); + ev_view_set_document (window->view, document); + ev_view_set_zoom (window->view, + get_screen_dpi (GTK_WINDOW (window)) / 72.0, + FALSE); + ev_view_set_loading (window->view, FALSE); +} + +void +ev_previewer_window_set_print_settings (EvPreviewerWindow *window, + const gchar *print_settings) +{ + if (window->print_settings) + g_object_unref (window->print_settings); + if (window->print_page_setup) + g_object_unref (window->print_page_setup); + if (window->print_job_title) + g_free (window->print_job_title); + + if (print_settings && g_file_test (print_settings, G_FILE_TEST_IS_REGULAR)) { + GKeyFile *key_file; + GError *error = NULL; + + key_file = g_key_file_new (); + g_key_file_load_from_file (key_file, + print_settings, + G_KEY_FILE_KEEP_COMMENTS | + G_KEY_FILE_KEEP_TRANSLATIONS, + &error); + if (!error) { + GtkPrintSettings *psettings; + GtkPageSetup *psetup; + gchar *job_name; + + psettings = gtk_print_settings_new_from_key_file (key_file, + "Print Settings", + NULL); + window->print_settings = psettings ? psettings : gtk_print_settings_new (); + + psetup = gtk_page_setup_new_from_key_file (key_file, + "Page Setup", + NULL); + window->print_page_setup = psetup ? psetup : gtk_page_setup_new (); + + job_name = g_key_file_get_string (key_file, + "Print Job", "title", + NULL); + if (job_name) { + window->print_job_title = job_name; + gtk_window_set_title (GTK_WINDOW (window), job_name); + } + } else { + window->print_settings = gtk_print_settings_new (); + window->print_page_setup = gtk_page_setup_new (); + g_error_free (error); + } + + g_key_file_free (key_file); + } else { + window->print_settings = gtk_print_settings_new (); + window->print_page_setup = gtk_page_setup_new (); + } +} + +void +ev_previewer_window_set_source_file (EvPreviewerWindow *window, + const gchar *source_file) +{ + if (window->source_file) + g_free (window->source_file); + window->source_file = g_strdup (source_file); +} -- cgit v0.9.1