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authorCarlos Garcia Campos <carlosgc@gnome.org>2009-01-18 11:53:54 (GMT)
committer Carlos Garcia Campos <carlosgc@src.gnome.org>2009-01-18 11:53:54 (GMT)
commit68d0fc3c59185065d9694ba3f8cb2665b984eb9f (patch)
tree1c3495114d26e1b9d201c557c351d5cf3996f925 /libview/ev-view.c
parent51e1ae36121928f84940b8e8dcb317f87157933b (diff)
Move EvView specific code to a libeviview library so that it can be
2009-01-18 Carlos Garcia Campos <carlosgc@gnome.org> * configure.ac: * Makefile.am: * libdocument/Makefile.am: * libview/Makefile.am: * libview/ev-job-scheduler.[ch]: * libview/ev-jobs.[ch]: * libview/ev-page-cache.[ch]: * libview/ev-pixbuf-cache.[ch]: * libview/ev-timeline.[ch]: * libview/ev-transition-animation.[ch]: * libview/ev-view-accessible.[ch]: * libview/ev-view-marshal.list: * libview/ev-view.[ch]: * shell/Makefile.am: Move EvView specific code to a libeviview library so that it can be embbeded in other applications. Based on patches by Tomeu Vizoso. Fixes bug #567751. svn path=/trunk/; revision=3348
Diffstat (limited to 'libview/ev-view.c')
-rw-r--r--libview/ev-view.c5891
1 files changed, 5891 insertions, 0 deletions
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 (&current_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 ā€œ%sā€"), title,
+ ev_link_action_get_filename (action));
+ } else {
+ msg = g_strdup_printf (_("Go to file ā€œ%sā€"),
+ 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 (&GTK_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,
+ &GTK_WIDGET (view)->style->black);
+ else
+ gdk_window_set_background (view->layout.bin_window,
+ &GTK_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,
+ &GTK_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);
+ }
+}