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authorPerberos <[email protected]>2011-11-09 18:17:43 -0300
committerPerberos <[email protected]>2011-11-09 18:17:43 -0300
commitf6ce926719943751cf65cacde7fae050593eb2d6 (patch)
tree9224d1751678cf2d1fbd0431f128b711311c0287 /libview/ev-view.c
downloadatril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.bz2
atril-f6ce926719943751cf65cacde7fae050593eb2d6.tar.xz
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
+/* this file is part of evince, a mate 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+
+#include <glib/gi18n-lib.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+
+#include "ev-mapping-list.h"
+#include "ev-document-forms.h"
+#include "ev-document-images.h"
+#include "ev-document-links.h"
+#include "ev-document-misc.h"
+#include "ev-pixbuf-cache.h"
+#include "ev-page-cache.h"
+#include "ev-view-marshal.h"
+#include "ev-document-annotations.h"
+#include "ev-annotation-window.h"
+#include "ev-loading-window.h"
+#include "ev-view.h"
+#include "ev-view-accessible.h"
+#include "ev-view-private.h"
+#include "ev-view-type-builtins.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 {
+ SIGNAL_BINDING_ACTIVATED,
+ SIGNAL_HANDLE_LINK,
+ SIGNAL_EXTERNAL_LINK,
+ SIGNAL_POPUP_MENU,
+ SIGNAL_SELECTION_CHANGED,
+ SIGNAL_SYNC_SOURCE,
+ SIGNAL_ANNOT_ADDED,
+ N_SIGNALS
+};
+
+enum {
+ TARGET_DND_URI,
+ TARGET_DND_TEXT,
+ TARGET_DND_IMAGE
+};
+
+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 SCROLL_TIME 150
+
+/*** Scrolling ***/
+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,
+ int *y_offset);
+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 gboolean get_dual_even_left (EvView *view);
+static void find_page_at_location (EvView *view,
+ gdouble x,
+ gdouble y,
+ gint *page,
+ gint *x_offset,
+ gint *y_offset);
+static void 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);
+
+/*** Annotations ***/
+static EvAnnotation *ev_view_get_annotation_at_location (EvView *view,
+ gdouble x,
+ gdouble y);
+static void show_annotation_windows (EvView *view,
+ gint page);
+static void hide_annotation_windows (EvView *view,
+ gint page);
+/*** 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 void highlight_find_results (EvView *view,
+ int page);
+static void highlight_forward_search_results (EvView *view,
+ int page);
+static void focus_annotation (EvView *view,
+ int page,
+ GdkRectangle *clip);
+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 show_loading_window (EvView *view);
+static void hide_loading_window (EvView *view);
+static void ev_view_reload_page (EvView *view,
+ gint page,
+ cairo_region_t *region);
+static void ev_view_loading_window_move (EvView *view);
+
+/*** Callbacks ***/
+static void ev_view_change_page (EvView *view,
+ gint new_page);
+static void job_finished_cb (EvPixbufCache *pixbuf_cache,
+ cairo_region_t *region,
+ EvView *view);
+static void ev_view_page_changed_cb (EvDocumentModel *model,
+ gint old_page,
+ gint 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_class_init (EvViewClass *class);
+static void ev_view_init (EvView *view);
+
+/*** Zoom and sizing ***/
+static double zoom_for_size_fit_width (gdouble doc_width,
+ gdouble doc_height,
+ int target_width,
+ int target_height);
+static double zoom_for_size_fit_height (gdouble doc_width,
+ gdouble doc_height,
+ int target_width,
+ int target_height);
+static double zoom_for_size_best_fit (gdouble doc_width,
+ gdouble doc_height,
+ int target_width,
+ int target_height);
+static void ev_view_zoom_for_size (EvView *view,
+ int width,
+ int height);
+static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
+ int width,
+ int height);
+static void ev_view_zoom_for_size_continuous (EvView *view,
+ int width,
+ int height);
+static void ev_view_zoom_for_size_dual_page (EvView *view,
+ int width,
+ int height);
+static void ev_view_zoom_for_size_single_page (EvView *view,
+ int width,
+ int height);
+/*** Cursors ***/
+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);
+
+G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
+
+/* HeightToPage cache */
+#define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache"
+
+static void
+build_height_to_page (EvHeightToPageCache *cache,
+ EvDocument *document,
+ gint rotation)
+{
+ gboolean swap, uniform, dual_even_left;
+ int i;
+ double uniform_height, page_height, next_page_height;
+ double saved_height;
+ gdouble u_width, u_height;
+ gint n_pages;
+
+ swap = (rotation == 90 || rotation == 270);
+
+ uniform = ev_document_is_page_size_uniform (document);
+ n_pages = ev_document_get_n_pages (document);
+ dual_even_left = (n_pages > 2);
+
+ g_free (cache->height_to_page);
+ g_free (cache->dual_height_to_page);
+
+ cache->rotation = rotation;
+ cache->height_to_page = g_new0 (gdouble, n_pages + 1);
+ cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2);
+
+ if (uniform)
+ ev_document_get_page_size (document, 0, &u_width, &u_height);
+
+ saved_height = 0;
+ for (i = 0; i <= n_pages; i++) {
+ if (uniform) {
+ uniform_height = swap ? u_width : u_height;
+ cache->height_to_page[i] = i * uniform_height;
+ } else {
+ if (i < n_pages) {
+ gdouble w, h;
+
+ ev_document_get_page_size (document, i, &w, &h);
+ page_height = swap ? w : h;
+ } else {
+ page_height = 0;
+ }
+ cache->height_to_page[i] = saved_height;
+ saved_height += page_height;
+ }
+ }
+
+ if (dual_even_left && !uniform) {
+ gdouble w, h;
+
+ ev_document_get_page_size (document, 0, &w, &h);
+ saved_height = swap ? w : h;
+ } else {
+ saved_height = 0;
+ }
+
+ for (i = dual_even_left; i < n_pages + 2; i += 2) {
+ if (uniform) {
+ uniform_height = swap ? u_width : u_height;
+ cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height;
+ if (i + 1 < n_pages + 2)
+ cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height;
+ } else {
+ if (i + 1 < n_pages) {
+ gdouble w, h;
+
+ ev_document_get_page_size (document, i + 1, &w, &h);
+ next_page_height = swap ? w : h;
+ } else {
+ next_page_height = 0;
+ }
+
+ if (i < n_pages) {
+ gdouble w, h;
+
+ ev_document_get_page_size (document, i, &w, &h);
+ page_height = swap ? w : h;
+ } else {
+ page_height = 0;
+ }
+
+ if (i + 1 < n_pages + 2) {
+ cache->dual_height_to_page[i] = saved_height;
+ cache->dual_height_to_page[i + 1] = saved_height;
+ saved_height += MAX(page_height, next_page_height);
+ } else {
+ cache->dual_height_to_page[i] = saved_height;
+ }
+ }
+ }
+}
+
+static void
+ev_height_to_page_cache_get_height (EvHeightToPageCache *cache,
+ EvDocument *document,
+ gint page,
+ gint rotation,
+ gdouble *height,
+ gdouble *dual_height)
+{
+ if (cache->rotation != rotation)
+ build_height_to_page (cache, document, rotation);
+
+ *height = cache->height_to_page[page];
+ *dual_height = cache->dual_height_to_page[page];
+}
+
+static void
+ev_height_to_page_cache_free (EvHeightToPageCache *cache)
+{
+ if (cache->height_to_page) {
+ g_free (cache->height_to_page);
+ cache->height_to_page = NULL;
+ }
+
+ if (cache->dual_height_to_page) {
+ g_free (cache->dual_height_to_page);
+ cache->dual_height_to_page = NULL;
+ }
+ g_free (cache);
+}
+
+static EvHeightToPageCache *
+ev_view_get_height_to_page_cache (EvView *view)
+{
+ EvHeightToPageCache *cache;
+
+ if (!view->document)
+ return NULL;
+
+ cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY);
+ if (!cache) {
+ cache = g_new0 (EvHeightToPageCache, 1);
+ build_height_to_page (cache, view->document, view->rotation);
+ g_object_set_data_full (G_OBJECT (view->document),
+ EV_HEIGHT_TO_PAGE_CACHE_KEY,
+ cache,
+ (GDestroyNotify)ev_height_to_page_cache_free);
+ }
+
+ return cache;
+}
+
+static void
+ev_view_get_height_to_page (EvView *view,
+ gint page,
+ gint *height,
+ gint *dual_height)
+{
+ gdouble h, dh;
+
+ if (!view->height_to_page_cache)
+ return;
+
+ ev_height_to_page_cache_get_height (view->height_to_page_cache,
+ view->document,
+ page,
+ view->rotation,
+ &h, &dh);
+ if (height)
+ *height = (gint)(h * view->scale + 0.5);
+
+ if (dual_height)
+ *dual_height = (gint)(dh * view->scale + 0.5);
+}
+
+static gint
+ev_view_get_scrollbar_size (EvView *view,
+ GtkOrientation orientation)
+{
+ GtkWidget *widget = GTK_WIDGET (view);
+ GtkWidget *sb;
+ GtkWidget *swindow = gtk_widget_get_parent (GTK_WIDGET (view));
+ GtkAllocation allocation;
+ GtkRequisition req;
+ gint spacing;
+
+ if (!GTK_IS_SCROLLED_WINDOW (swindow))
+ return 0;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ if (orientation == GTK_ORIENTATION_VERTICAL) {
+ if (allocation.height >= view->requisition.height)
+ sb = gtk_scrolled_window_get_vscrollbar (GTK_SCROLLED_WINDOW (swindow));
+ else
+ return 0;
+ } else {
+ if (allocation.width >= view->requisition.width)
+ sb = gtk_scrolled_window_get_hscrollbar (GTK_SCROLLED_WINDOW (swindow));
+ else
+ return 0;
+ }
+
+ gtk_widget_style_get (swindow, "scrollbar_spacing", &spacing, NULL);
+ gtk_widget_size_request (sb, &req);
+
+ return (orientation == GTK_ORIENTATION_VERTICAL ? req.width : req.height) + spacing;
+}
+
+static void
+scroll_to_point (EvView *view,
+ gdouble x,
+ gdouble y,
+ GtkOrientation orientation)
+{
+ gdouble page_size;
+ gdouble upper, lower;
+
+ if (orientation == GTK_ORIENTATION_VERTICAL) {
+ page_size = gtk_adjustment_get_page_size (view->vadjustment);
+ upper = gtk_adjustment_get_upper (view->vadjustment);
+ lower = gtk_adjustment_get_lower (view->vadjustment);
+
+ if (view->continuous) {
+ gtk_adjustment_clamp_page (view->vadjustment,
+ y - view->spacing / 2,
+ y + page_size);
+ } else {
+ gtk_adjustment_set_value (view->vadjustment,
+ CLAMP (y, lower, upper - page_size));
+ }
+ } else {
+ page_size = gtk_adjustment_get_page_size (view->hadjustment);
+ upper = gtk_adjustment_get_upper (view->hadjustment);
+ lower = gtk_adjustment_get_lower (view->hadjustment);
+
+ if (view->dual_page) {
+ gtk_adjustment_clamp_page (view->hadjustment, x,
+ x + page_size);
+ } else {
+ gtk_adjustment_set_value (view->hadjustment,
+ CLAMP (x, lower, upper - page_size));
+ }
+ }
+}
+
+static void
+ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation)
+{
+ gdouble x, y;
+
+ if (!view->document)
+ return;
+
+ if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) ||
+ (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) {
+ GdkRectangle page_area;
+ GtkBorder border;
+
+ ev_view_get_page_extents (view, view->current_page, &page_area, &border);
+ x = page_area.x;
+ y = page_area.y;
+ } else {
+ GdkPoint view_point;
+
+ doc_point_to_view_point (view, view->current_page,
+ &view->pending_point, &view_point);
+ x = view_point.x;
+ y = view_point.y;
+ }
+
+ scroll_to_point (view, x, y, orientation);
+}
+
+static void
+view_set_adjustment_values (EvView *view,
+ GtkOrientation orientation)
+{
+ GtkWidget *widget = GTK_WIDGET (view);
+ GtkAdjustment *adjustment;
+ GtkAllocation allocation;
+ int req_size;
+ int alloc_size;
+ gdouble page_size;
+ gdouble value;
+ gdouble upper;
+ double factor;
+ gint new_value;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL) {
+ req_size = view->requisition.width;
+ alloc_size = allocation.width;
+ adjustment = view->hadjustment;
+ } else {
+ req_size = view->requisition.height;
+ alloc_size = allocation.height;
+ adjustment = view->vadjustment;
+ }
+
+ if (!adjustment)
+ return;
+
+ factor = 1.0;
+ value = gtk_adjustment_get_value (adjustment);
+ upper = gtk_adjustment_get_upper (adjustment);
+ page_size = gtk_adjustment_get_page_size (adjustment);
+
+ switch (view->pending_scroll) {
+ case SCROLL_TO_KEEP_POSITION:
+ case SCROLL_TO_FIND_LOCATION:
+ factor = value / upper;
+ break;
+ case SCROLL_TO_PAGE_POSITION:
+ break;
+ case SCROLL_TO_CENTER:
+ factor = (value + page_size * 0.5) / upper;
+ break;
+ }
+
+ upper = MAX (alloc_size, req_size);
+ page_size = alloc_size;
+
+ gtk_adjustment_set_page_size (adjustment, page_size);
+ gtk_adjustment_set_step_increment (adjustment, alloc_size * 0.1);
+ gtk_adjustment_set_page_increment (adjustment, alloc_size * 0.9);
+ gtk_adjustment_set_lower (adjustment, 0);
+ gtk_adjustment_set_upper (adjustment, upper);
+
+ /*
+ * 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 (upper * factor + 0.5, 0, upper - page_size);
+ gtk_adjustment_set_value (adjustment, (int)new_value);
+ break;
+ case SCROLL_TO_PAGE_POSITION:
+ ev_view_scroll_to_page_position (view, orientation);
+ break;
+ case SCROLL_TO_CENTER:
+ new_value = CLAMP (upper * factor - page_size * 0.5 + 0.5,
+ 0, upper - 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 start = view->start_page;
+ gint end = view->end_page;
+
+ if (ev_document_get_n_pages (view->document) <= 0 ||
+ !ev_document_check_dimensions (view->document))
+ return;
+
+ if (view->continuous) {
+ GdkRectangle current_area, unused, page_area;
+ GtkBorder border;
+ gboolean found = FALSE;
+ gint area_max = -1, area;
+ gint best_current_page = -1;
+ int i, j = 0;
+
+ if (!(view->vadjustment && view->hadjustment))
+ return;
+
+ current_area.x = gtk_adjustment_get_value (view->hadjustment);
+ current_area.width = gtk_adjustment_get_page_size (view->hadjustment);
+ current_area.y = gtk_adjustment_get_value (view->vadjustment);
+ current_area.height = gtk_adjustment_get_page_size (view->vadjustment);
+
+ for (i = 0; i < ev_document_get_n_pages (view->document); i++) {
+
+ ev_view_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;
+ j = 0;
+ } else if (found && view->current_page <= view->end_page) {
+ if (view->dual_page && j < 1) {
+ /* In dual mode we stop searching
+ * after two consecutive non-visible pages.
+ */
+ j++;
+ continue;
+ }
+ break;
+ }
+ }
+
+ if (view->pending_scroll == SCROLL_TO_KEEP_POSITION) {
+ best_current_page = MAX (best_current_page, view->start_page);
+
+ if (view->current_page != best_current_page) {
+ view->current_page = best_current_page;
+ hide_loading_window (view);
+ ev_document_model_set_page (view->model, best_current_page);
+ }
+ }
+ } else if (view->dual_page) {
+ if (view->current_page % 2 == get_dual_even_left (view)) {
+ view->start_page = view->current_page;
+ if (view->current_page + 1 < ev_document_get_n_pages (view->document))
+ 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;
+ }
+
+ if (view->start_page == -1 || view->end_page == -1)
+ return;
+
+ if (start != view->start_page || end != view->end_page) {
+ gint i;
+
+ for (i = start; i < view->start_page && start != -1; i++) {
+ hide_annotation_windows (view, i);
+ }
+
+ for (i = end; i > view->end_page && end != -1; i--) {
+ hide_annotation_windows (view, i);
+ }
+ }
+
+ ev_page_cache_set_page_range (view->page_cache,
+ view->start_page,
+ view->end_page);
+ ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
+ view->start_page,
+ view->end_page,
+ view->selection_info.selections);
+
+ if (ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page))
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+}
+
+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);
+}
+
+static gdouble
+compute_scroll_increment (EvView *view,
+ GtkScrollType scroll)
+{
+ GtkWidget *widget = GTK_WIDGET (view);
+ GtkAdjustment *adjustment = view->vadjustment;
+ cairo_region_t *text_region, *region;
+ GtkAllocation allocation;
+ gint page;
+ GdkRectangle rect;
+ EvRectangle doc_rect;
+ GdkRectangle page_area;
+ GtkBorder border;
+ gdouble fraction = 1.0;
+
+ if (scroll != GTK_SCROLL_PAGE_BACKWARD && scroll != GTK_SCROLL_PAGE_FORWARD)
+ return gtk_adjustment_get_page_size (adjustment);
+
+ page = scroll == GTK_SCROLL_PAGE_BACKWARD ? view->start_page : view->end_page;
+
+ text_region = ev_page_cache_get_text_mapping (view->page_cache, page);
+ if (!text_region || cairo_region_is_empty (text_region))
+ return gtk_adjustment_get_page_size (adjustment);
+
+ gtk_widget_get_allocation (widget, &allocation);
+ ev_view_get_page_extents (view, page, &page_area, &border);
+ rect.x = page_area.x + view->scroll_x;
+ rect.y = view->scroll_y + (scroll == GTK_SCROLL_PAGE_BACKWARD ? 5 : allocation.height - 5);
+ rect.width = page_area.width;
+ rect.height = 1;
+ view_rect_to_doc_rect (view, &rect, &page_area, &doc_rect);
+
+ /* Convert the doc rectangle into a GdkRectangle */
+ rect.x = doc_rect.x1;
+ rect.y = doc_rect.y1;
+ rect.width = doc_rect.x2 - doc_rect.x1;
+ rect.height = MAX (1, doc_rect.y2 - doc_rect.y1);
+ region = cairo_region_create_rectangle (&rect);
+
+ cairo_region_intersect (region, text_region);
+ if (cairo_region_num_rectangles (region)) {
+ EvRenderContext *rc;
+ EvPage *ev_page;
+ cairo_region_t *sel_region;
+
+ cairo_region_get_rectangle (region, 0, &rect);
+ ev_page = ev_document_get_page (view->document, page);
+ rc = ev_render_context_new (ev_page, view->rotation, view->scale);
+ g_object_unref (ev_page);
+ /* Get the selection region to know the height of the line */
+ doc_rect.x1 = doc_rect.x2 = rect.x + 0.5;
+ doc_rect.y1 = doc_rect.y2 = rect.y + 0.5;
+
+ ev_document_doc_mutex_lock ();
+ sel_region = ev_selection_get_selection_region (EV_SELECTION (view->document),
+ rc, EV_SELECTION_STYLE_LINE,
+ &doc_rect);
+ ev_document_doc_mutex_unlock ();
+
+ g_object_unref (rc);
+
+ if (cairo_region_num_rectangles (sel_region) > 0) {
+ cairo_region_get_rectangle (sel_region, 0, &rect);
+ fraction = 1 - (rect.height / gtk_adjustment_get_page_size (adjustment));
+ }
+ cairo_region_destroy (sel_region);
+ }
+ cairo_region_destroy (region);
+
+ return gtk_adjustment_get_page_size (adjustment) * fraction;
+
+}
+
+void
+ev_view_scroll (EvView *view,
+ GtkScrollType scroll,
+ gboolean horizontal)
+{
+ GtkAdjustment *adjustment;
+ double value, increment;
+ gdouble upper, lower;
+ gdouble page_size;
+ gdouble step_increment;
+ gboolean first_page = FALSE;
+ gboolean last_page = FALSE;
+
+ view->jump_to_find_result = FALSE;
+
+ if (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;
+ value = gtk_adjustment_get_value (adjustment);
+ upper = gtk_adjustment_get_upper (adjustment);
+ lower = gtk_adjustment_get_lower (adjustment);
+ page_size = gtk_adjustment_get_page_size (adjustment);
+ step_increment = gtk_adjustment_get_step_increment (adjustment);
+
+ /* Assign boolean for first and last page */
+ if (view->current_page == 0)
+ first_page = TRUE;
+ if (view->current_page == ev_document_get_n_pages (view->document) - 1)
+ last_page = TRUE;
+
+ switch (scroll) {
+ case GTK_SCROLL_PAGE_BACKWARD:
+ /* Do not jump backwards if at the first page */
+ if (value == lower && first_page) {
+ /* Do nothing */
+ /* At the top of a page, assign the upper bound limit of previous page */
+ } else if (value == lower) {
+ value = upper - page_size;
+ ev_view_previous_page (view);
+ /* Jump to the top */
+ } else {
+ increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_BACKWARD);
+ value = MAX (value - increment, lower);
+ }
+ break;
+ case GTK_SCROLL_PAGE_FORWARD:
+ /* Do not jump forward if at the last page */
+ if (value == (upper - page_size) && last_page) {
+ /* Do nothing */
+ /* At the bottom of a page, assign the lower bound limit of next page */
+ } else if (value == (upper - page_size)) {
+ value = 0;
+ ev_view_next_page (view);
+ /* Jump to the bottom */
+ } else {
+ increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_FORWARD);
+ value = MIN (value + increment, upper - page_size);
+ }
+ break;
+ case GTK_SCROLL_STEP_BACKWARD:
+ value -= step_increment;
+ break;
+ case GTK_SCROLL_STEP_FORWARD:
+ value += step_increment;
+ break;
+ case GTK_SCROLL_STEP_DOWN:
+ value -= step_increment / 10;
+ break;
+ case GTK_SCROLL_STEP_UP:
+ value += step_increment / 10;
+ break;
+ default:
+ break;
+ }
+
+ value = CLAMP (value, lower, upper - 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;
+ GtkAllocation allocation;
+ gdouble adj_value;
+ int value;
+
+ view->pending_scroll = SCROLL_TO_FIND_LOCATION;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ adjustment = view->vadjustment;
+ adj_value = gtk_adjustment_get_value (adjustment);
+
+ if (rect->y < adj_value) {
+ value = MAX (gtk_adjustment_get_lower (adjustment), rect->y - MARGIN);
+ gtk_adjustment_set_value (view->vadjustment, value);
+ } else if (rect->y + rect->height > adj_value + allocation.height) {
+ value = MIN (gtk_adjustment_get_upper (adjustment), rect->y + rect->height -
+ allocation.height + MARGIN);
+ gtk_adjustment_set_value (view->vadjustment, value);
+ }
+
+ adjustment = view->hadjustment;
+ adj_value = gtk_adjustment_get_value (adjustment);
+
+ if (rect->x < adj_value) {
+ value = MAX (gtk_adjustment_get_lower (adjustment), rect->x - MARGIN);
+ gtk_adjustment_set_value (view->hadjustment, value);
+ } else if (rect->x + rect->height > adj_value + allocation.width) {
+ value = MIN (gtk_adjustment_get_upper (adjustment), rect->x + rect->width -
+ 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)
+{
+ ev_document_misc_get_page_border_size (width, height, border);
+}
+
+void
+_get_page_size_for_scale_and_rotation (EvDocument *document,
+ gint page,
+ gdouble scale,
+ gint rotation,
+ gint *page_width,
+ gint *page_height)
+{
+ gdouble w, h;
+ gint width, height;
+
+ ev_document_get_page_size (document, page, &w, &h);
+
+ width = (gint)(w * scale + 0.5);
+ height = (gint)(h * scale + 0.5);
+
+ if (page_width)
+ *page_width = (rotation == 0 || rotation == 180) ? width : height;
+ if (page_height)
+ *page_height = (rotation == 0 || rotation == 180) ? height : width;
+}
+
+static void
+ev_view_get_page_size (EvView *view,
+ gint page,
+ gint *page_width,
+ gint *page_height)
+{
+ _get_page_size_for_scale_and_rotation (view->document,
+ page,
+ view->scale,
+ view->rotation,
+ page_width,
+ page_height);
+}
+
+static void
+ev_view_get_max_page_size (EvView *view,
+ gint *max_width,
+ gint *max_height)
+{
+ double w, h;
+ gint width, height;
+
+ ev_document_get_max_page_size (view->document, &w, &h);
+
+ width = (gint)(w * view->scale + 0.5);
+ height = (gint)(h * view->scale + 0.5);
+
+ if (max_width)
+ *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height;
+ if (max_height)
+ *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width;
+}
+
+static void
+get_page_y_offset (EvView *view, int page, int *y_offset)
+{
+ int max_width, offset;
+ GtkBorder border;
+
+ g_return_if_fail (y_offset != NULL);
+
+ ev_view_get_max_page_size (view, &max_width, NULL);
+ compute_border (view, max_width, max_width, &border);
+
+ if (view->dual_page) {
+ ev_view_get_height_to_page (view, page, NULL, &offset);
+ offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing +
+ ((page + get_dual_even_left (view)) / 2 ) * (border.top + border.bottom);
+ } else {
+ ev_view_get_height_to_page (view, page, &offset, NULL);
+ offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
+ }
+
+ *y_offset = offset;
+ return;
+}
+
+gboolean
+ev_view_get_page_extents (EvView *view,
+ gint page,
+ GdkRectangle *page_area,
+ GtkBorder *border)
+{
+ GtkWidget *widget;
+ int width, height;
+ GtkAllocation allocation;
+
+ widget = GTK_WIDGET (view);
+ gtk_widget_get_allocation (widget, &allocation);
+
+ /* Get the size of the page */
+ ev_view_get_page_size (view, page, &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->continuous) {
+ gint max_width;
+ gint x, y;
+
+ ev_view_get_max_page_size (view, &max_width, NULL);
+ max_width = max_width + border->left + border->right;
+ /* Get the location of the bounding box */
+ if (view->dual_page) {
+ x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing);
+ x = x + MAX (0, allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
+ if (page % 2 == get_dual_even_left (view))
+ x = x + (max_width - width - border->left - border->right);
+ } else {
+ x = view->spacing;
+ x = x + MAX (0, allocation.width - (width + view->spacing * 2)) / 2;
+ }
+
+ get_page_y_offset (view, page, &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 == get_dual_even_left (view)) ? page + 1: page - 1;
+
+ /* First, we get the bounding box of the two pages */
+ if (other_page < ev_document_get_n_pages (view->document)
+ && (0 <= other_page)) {
+ ev_view_get_page_size (view, other_page,
+ &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 == get_dual_even_left (view))
+ 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, allocation.width -
+ ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
+ y = y + MAX (0, allocation.height - (height + view->spacing * 2))/2;
+ } else {
+ x = view->spacing;
+ y = view->spacing;
+
+ /* Adjust for extra allocation */
+ x = x + MAX (0, allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
+ y = y + MAX (0, allocation.height - (height + border->top + border->bottom + view->spacing * 2))/2;
+ }
+
+ page_area->x = x;
+ page_area->y = y;
+ }
+
+ return TRUE;
+}
+
+static void
+get_doc_page_size (EvView *view,
+ gint page,
+ gdouble *width,
+ gdouble *height)
+{
+ double w, h;
+
+ ev_document_get_page_size (view->document, page, &w, &h);
+ if (view->rotation == 0 || view->rotation == 180) {
+ if (width) *width = w;
+ if (height) *height = h;
+ } else {
+ if (width) *width = h;
+ if (height) *height = w;
+ }
+}
+
+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 void
+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;
+ gdouble width, height;
+
+ get_doc_page_size (view, page, &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 ();
+ }
+
+ ev_view_get_page_extents (view, page, &page_area, &border);
+
+ view_x = CLAMP (x * view->scale, 0, page_area.width);
+ view_y = CLAMP (y * view->scale, 0, page_area.height);
+ view_point->x = view_x + page_area.x;
+ view_point->y = view_y + page_area.y;
+}
+
+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;
+ gdouble width, height;
+
+ get_doc_page_size (view, page, &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 ();
+ }
+
+ ev_view_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 gboolean
+get_dual_even_left (EvView *view)
+{
+ return (ev_document_get_n_pages (view->document) > 2);
+}
+
+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 >= 0 && i <= view->end_page; i++) {
+ GdkRectangle page_area;
+ GtkBorder border;
+
+ if (! ev_view_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)
+{
+ cairo_region_t *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_page_cache_get_text_mapping (view->page_cache, page);
+
+ if (region)
+ return cairo_region_contains_point (region, x_offset / view->scale, y_offset / view->scale);
+ else
+ return FALSE;
+}
+
+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 &&
+ cairo_region_contains_point (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)
+{
+ gdouble width, height;
+ double x, y;
+
+ get_doc_page_size (view, page, &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;
+}
+
+static gboolean
+get_doc_point_from_location (EvView *view,
+ gdouble x,
+ gdouble y,
+ gint *page,
+ gint *x_new,
+ gint *y_new)
+{
+ 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);
+ if (*page == -1)
+ return FALSE;
+
+ return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
+}
+
+static void
+ev_view_get_area_from_mapping (EvView *view,
+ guint page,
+ EvMappingList *mapping_list,
+ gconstpointer data,
+ GdkRectangle *area)
+{
+ EvMapping *mapping;
+
+ mapping = ev_mapping_list_find (mapping_list, data);
+ doc_rect_to_view_rect (view, page, &mapping->area, area);
+ area->x -= view->scroll_x;
+ area->y -= view->scroll_y;
+}
+
+
+/*** Hyperref ***/
+static EvLink *
+ev_view_get_link_at_location (EvView *view,
+ gdouble x,
+ gdouble y)
+{
+ gint page = -1;
+ gint x_new = 0, y_new = 0;
+ EvMappingList *link_mapping;
+
+ if (!EV_IS_DOCUMENT_LINKS (view->document))
+ return NULL;
+
+ if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
+ return NULL;
+
+ link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
+
+ if (link_mapping)
+ return ev_mapping_list_get_data (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;
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+
+ 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,
+ allocation.width,
+ allocation.height);
+
+ ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
+ ev_document_model_set_scale (view->model, zoom);
+
+ doc_point.x = change_left ? left : 0;
+ doc_point.y = change_top ? top : 0;
+ view->pending_point = doc_point;
+
+ ev_view_change_page (view, ev_link_dest_get_page (dest));
+}
+
+static void
+goto_fitv_dest (EvView *view, EvLinkDest *dest)
+{
+ EvPoint doc_point;
+ gdouble doc_width, doc_height;
+ gint page;
+ double zoom, left;
+ gboolean change_left;
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+
+ page = ev_link_dest_get_page (dest);
+ ev_document_get_page_size (view->document, page, &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,
+ allocation.width,
+ allocation.height);
+
+ ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
+ ev_document_model_set_scale (view->model, zoom);
+
+ view->pending_point = doc_point;
+
+ ev_view_change_page (view, page);
+}
+
+static void
+goto_fith_dest (EvView *view, EvLinkDest *dest)
+{
+ EvPoint doc_point;
+ gdouble doc_width, doc_height;
+ gint page;
+ gdouble zoom, top;
+ gboolean change_top;
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+
+ page = ev_link_dest_get_page (dest);
+ ev_document_get_page_size (view->document, page, &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,
+ allocation.width,
+ allocation.height);
+
+ ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_WIDTH);
+ ev_document_model_set_scale (view->model, zoom);
+
+ view->pending_point = doc_point;
+
+ ev_view_change_page (view, page);
+}
+
+static void
+goto_fit_dest (EvView *view, EvLinkDest *dest)
+{
+ double zoom;
+ gdouble doc_width, doc_height;
+ int page;
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+
+ page = ev_link_dest_get_page (dest);
+ ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
+
+ zoom = zoom_for_size_best_fit (doc_width, doc_height,
+ allocation.width,
+ allocation.height);
+
+ ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT);
+ ev_document_model_set_scale (view->model, zoom);
+
+ ev_view_change_page (view, page);
+}
+
+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_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
+ ev_document_model_set_scale (view->model, zoom);
+ }
+
+ 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->pending_point = doc_point;
+
+ ev_view_change_page (view, page);
+}
+
+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_document_get_n_pages (view->document);
+
+ 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_document_model_set_page (view->model, 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_document_model_set_page_by_label (view->model, ev_link_dest_get_page_label (dest));
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+
+ if (current_page != view->current_page)
+ ev_document_model_set_page (view->model, 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;
+ }
+}
+
+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_document_links_get_dest_page_label (EV_DOCUMENT_LINKS (view->document),
+ ev_link_action_get_dest (action));
+ if (page_label) {
+ msg = g_strdup_printf (_("Go to page %s"), page_label);
+ g_free (page_label);
+ }
+ break;
+ case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
+ if (title) {
+ msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
+ ev_link_action_get_filename (action));
+ } else {
+ msg = g_strdup_printf (_("Go to file “%s”"),
+ ev_link_action_get_filename (action));
+ }
+ break;
+ case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
+ msg = g_strdup (ev_link_action_get_uri (action));
+ break;
+ case EV_LINK_ACTION_TYPE_LAUNCH:
+ msg = g_strdup_printf (_("Launch %s"),
+ ev_link_action_get_filename (action));
+ break;
+ case EV_LINK_ACTION_TYPE_NAMED:
+ msg = tip_from_action_named (action);
+ break;
+ default:
+ if (title)
+ msg = g_strdup (title);
+ break;
+ }
+
+ return msg;
+}
+
+static void
+ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
+{
+ EvLink *link;
+ EvFormField *field;
+ EvAnnotation *annot = NULL;
+
+ if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
+ return;
+
+ if (view->adding_annot) {
+ if (view->cursor != EV_VIEW_CURSOR_ADD)
+ ev_view_set_cursor (view, EV_VIEW_CURSOR_ADD);
+ 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) {
+ 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 ((annot = ev_view_get_annotation_at_location (view, x, y))) {
+ 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 ||
+ view->cursor == EV_VIEW_CURSOR_ADD)
+ ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
+ }
+
+ if (link || annot)
+ g_object_set (view, "has-tooltip", TRUE, NULL);
+}
+
+/*** Images ***/
+static EvImage *
+ev_view_get_image_at_location (EvView *view,
+ gdouble x,
+ gdouble y)
+{
+ gint page = -1;
+ gint x_new = 0, y_new = 0;
+ EvMappingList *image_mapping;
+
+ if (!EV_IS_DOCUMENT_IMAGES (view->document))
+ return NULL;
+
+ if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
+ return NULL;
+
+ image_mapping = ev_page_cache_get_image_mapping (view->page_cache, page);
+
+ if (image_mapping)
+ return ev_mapping_list_get_data (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_new = 0, y_new = 0;
+ EvMappingList *forms_mapping;
+
+ if (!EV_IS_DOCUMENT_FORMS (view->document))
+ return NULL;
+
+ if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
+ return NULL;
+
+ forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, page);
+
+ if (forms_mapping)
+ return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
+ else
+ return NULL;
+}
+
+static cairo_region_t *
+ev_view_form_field_get_region (EvView *view,
+ EvFormField *field)
+{
+ GdkRectangle view_area;
+ EvMappingList *forms_mapping;
+
+ forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
+ field->page->index);
+ ev_view_get_area_from_mapping (view, field->page->index,
+ forms_mapping,
+ field, &view_area);
+
+ return cairo_region_create_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);
+ cairo_region_t *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;
+ EvMappingList *forms_mapping;
+ GList *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_page_cache_get_form_field_mapping (view->page_cache,
+ field->page->index);
+ for (l = ev_mapping_list_get_list (forms_mapping); l; l = g_list_next (l)) {
+ EvFormField *button = ((EvMapping *)(l->data))->data;
+ cairo_region_t *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);
+ cairo_region_union (field_region, button_region);
+ cairo_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);
+ cairo_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);
+ cairo_region_t *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);
+ cairo_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 (text, "changed",
+ G_CALLBACK (ev_view_form_field_text_changed),
+ field);
+ g_signal_connect_after (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 (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);
+ cairo_region_t *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);
+ cairo_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 (selection, "changed",
+ G_CALLBACK (ev_view_form_field_choice_changed),
+ field);
+ g_signal_connect_after (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 (choice, "changed",
+ G_CALLBACK (ev_view_form_field_choice_changed),
+ field);
+ g_signal_connect_after (gtk_bin_get_child (GTK_BIN (choice)),
+ "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 (choice, "changed",
+ G_CALLBACK (ev_view_form_field_choice_changed),
+ field);
+ g_signal_connect_after (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;
+ EvMappingList *form_field_mapping;
+ 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_page_cache_get_form_field_mapping (view->page_cache,
+ field->page->index);
+ ev_view_get_area_from_mapping (view, field->page->index,
+ form_field_mapping,
+ field, &view_area);
+
+ 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);
+}
+
+/* Annotations */
+static EvViewWindowChild *
+ev_view_get_window_child (EvView *view,
+ GtkWidget *window)
+{
+ GList *children = view->window_children;
+
+ while (children) {
+ EvViewWindowChild *child;
+
+ child = (EvViewWindowChild *)children->data;
+ children = children->next;
+
+ if (child->window == window)
+ return child;
+ }
+
+ return NULL;
+}
+
+static void
+ev_view_window_child_move (EvView *view,
+ EvViewWindowChild *child,
+ gint x,
+ gint y)
+{
+ GtkAllocation allocation;
+ gint width, height;
+
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+ gtk_window_get_size (GTK_WINDOW (child->window), &width, &height);
+
+ child->x = x;
+ child->y = y;
+ gtk_window_move (GTK_WINDOW (child->window),
+ CLAMP (x, child->parent_x,
+ child->parent_x + allocation.width - width),
+ CLAMP (y, child->parent_y,
+ child->parent_y + allocation.height - height));
+}
+
+static void
+ev_view_window_child_move_with_parent (EvView *view,
+ GtkWidget *window)
+{
+ EvViewWindowChild *child;
+ gint root_x, root_y;
+
+ child = ev_view_get_window_child (view, window);
+ gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
+ &root_x, &root_y);
+ if (root_x != child->parent_x || root_y != child->parent_y) {
+ gint dest_x, dest_y;
+
+ dest_x = child->x + (root_x - child->parent_x);
+ dest_y = child->y + (root_y - child->parent_y);
+ child->parent_x = root_x;
+ child->parent_y = root_y;
+ ev_view_window_child_move (view, child, dest_x, dest_y);
+ }
+
+ if (child->visible && !gtk_widget_get_visible (window))
+ gtk_widget_show (window);
+}
+
+static void
+ev_view_window_child_put (EvView *view,
+ GtkWidget *window,
+ guint page,
+ gint x,
+ gint y,
+ gdouble orig_x,
+ gdouble orig_y)
+{
+ EvViewWindowChild *child;
+ gint root_x, root_y;
+
+ gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
+ &root_x, &root_y);
+
+ child = g_new0 (EvViewWindowChild, 1);
+ child->window = window;
+ child->page = page;
+ child->orig_x = orig_x;
+ child->orig_y = orig_y;
+ child->parent_x = root_x;
+ child->parent_y = root_y;
+ child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
+ ev_view_window_child_move (view, child, x + root_x, y + root_y);
+
+ if (child->visible)
+ gtk_widget_show (window);
+ else
+ gtk_widget_hide (window);
+
+ view->window_children = g_list_append (view->window_children, child);
+}
+
+static EvViewWindowChild *
+ev_view_find_window_child_for_annot (EvView *view,
+ guint page,
+ EvAnnotation *annot)
+{
+ GList *children = view->window_children;
+
+ while (children) {
+ EvViewWindowChild *child;
+ EvAnnotation *wannot;
+
+ child = (EvViewWindowChild *)children->data;
+ children = children->next;
+
+ if (child->page != page)
+ continue;
+
+ wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
+ if (ev_annotation_equal (wannot, annot))
+ return child;
+ }
+
+ return NULL;
+}
+
+static void
+ev_view_window_children_free (EvView *view)
+{
+ GList *l;
+
+ if (!view->window_children)
+ return;
+
+ for (l = view->window_children; l && l->data; l = g_list_next (l)) {
+ EvViewWindowChild *child;
+
+ child = (EvViewWindowChild *)l->data;
+ gtk_widget_destroy (GTK_WIDGET (child->window));
+ g_free (child);
+ }
+ g_list_free (view->window_children);
+ view->window_children = NULL;
+ view->window_child_focus = NULL;
+}
+
+static void
+annotation_window_grab_focus (GtkWidget *widget,
+ EvView *view)
+{
+ if (view->window_child_focus)
+ ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
+ view->window_child_focus = ev_view_get_window_child (view, widget);
+}
+
+static void
+annotation_window_closed (EvAnnotationWindow *window,
+ EvView *view)
+{
+ EvViewWindowChild *child;
+
+ child = ev_view_get_window_child (view, GTK_WIDGET (window));
+ child->visible = FALSE;
+}
+
+static void
+annotation_window_moved (EvAnnotationWindow *window,
+ gint x,
+ gint y,
+ EvView *view)
+{
+ EvViewWindowChild *child;
+ GdkRectangle page_area;
+ GtkBorder border;
+ GdkRectangle view_rect;
+ EvRectangle doc_rect;
+ gint width, height;
+
+ child = ev_view_get_window_child (view, GTK_WIDGET (window));
+ if (child->x == x && child->y == y)
+ return;
+
+ child->moved = TRUE;
+ child->x = x;
+ child->y = y;
+
+ /* Window has been moved by the user,
+ * we have to set a new origin in doc coords
+ */
+ gtk_window_get_size (GTK_WINDOW (window), &width, &height);
+ view_rect.x = (x - child->parent_x) + view->scroll_x;
+ view_rect.y = (y - child->parent_y) + view->scroll_y;
+ view_rect.width = width;
+ view_rect.height = height;
+
+ ev_view_get_page_extents (view, child->page, &page_area, &border);
+ view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
+ child->orig_x = doc_rect.x1;
+ child->orig_y = doc_rect.y1;
+}
+
+static void
+ev_view_annotation_save_contents (EvView *view,
+ GParamSpec *pspec,
+ EvAnnotation *annot)
+{
+ if (!view->document)
+ return;
+
+ ev_document_doc_mutex_lock ();
+ ev_document_annotations_save_annotation (EV_DOCUMENT_ANNOTATIONS (view->document),
+ annot, EV_ANNOTATIONS_SAVE_CONTENTS);
+ ev_document_doc_mutex_unlock ();
+}
+
+static GtkWidget *
+ev_view_create_annotation_window (EvView *view,
+ EvAnnotation *annot,
+ GtkWindow *parent)
+{
+ GtkWidget *window;
+ EvRectangle doc_rect;
+ GdkRectangle view_rect;
+ guint page;
+
+ window = ev_annotation_window_new (annot, parent);
+ g_signal_connect (window, "grab_focus",
+ G_CALLBACK (annotation_window_grab_focus),
+ view);
+ g_signal_connect (window, "closed",
+ G_CALLBACK (annotation_window_closed),
+ view);
+ g_signal_connect (window, "moved",
+ G_CALLBACK (annotation_window_moved),
+ view);
+ g_signal_connect_swapped (annot, "notify::contents",
+ G_CALLBACK (ev_view_annotation_save_contents),
+ view);
+ g_object_set_data (G_OBJECT (annot), "popup", window);
+
+ page = ev_annotation_get_page_index (annot);
+ ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window), &doc_rect);
+ doc_rect_to_view_rect (view, page, &doc_rect, &view_rect);
+ view_rect.x -= view->scroll_x;
+ view_rect.y -= view->scroll_y;
+
+ ev_view_window_child_put (view, window, page,
+ view_rect.x, view_rect.y,
+ doc_rect.x1, doc_rect.y1);
+
+ return window;
+}
+
+static void
+show_annotation_windows (EvView *view,
+ gint page)
+{
+ EvMappingList *annots;
+ GList *l;
+ GtkWindow *parent;
+
+ parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
+
+ annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
+
+ for (l = ev_mapping_list_get_list (annots); l && l->data; l = g_list_next (l)) {
+ EvAnnotation *annot;
+ EvViewWindowChild *child;
+ GtkWidget *window;
+
+ annot = ((EvMapping *)(l->data))->data;
+
+ if (!EV_IS_ANNOTATION_MARKUP (annot))
+ continue;
+
+ if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
+ continue;
+
+ window = g_object_get_data (G_OBJECT (annot), "popup");
+ if (window) {
+ ev_view_window_child_move_with_parent (view, window);
+ continue;
+ }
+
+ /* Look if we already have a popup for this annot */
+ child = ev_view_find_window_child_for_annot (view, page, annot);
+ window = child ? child->window : NULL;
+ if (window) {
+ ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
+ g_object_set_data (G_OBJECT (annot), "popup", window);
+ ev_view_window_child_move_with_parent (view, window);
+ } else {
+ ev_view_create_annotation_window (view, annot, parent);
+ }
+ }
+}
+
+static void
+hide_annotation_windows (EvView *view,
+ gint page)
+{
+ EvMappingList *annots;
+ GList *l;
+
+ annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
+
+ for (l = ev_mapping_list_get_list (annots); l && l->data; l = g_list_next (l)) {
+ EvAnnotation *annot;
+ GtkWidget *window;
+
+ annot = ((EvMapping *)(l->data))->data;
+
+ if (!EV_IS_ANNOTATION_MARKUP (annot))
+ continue;
+
+ window = g_object_get_data (G_OBJECT (annot), "popup");
+ if (window)
+ gtk_widget_hide (window);
+ }
+}
+
+static EvAnnotation *
+ev_view_get_annotation_at_location (EvView *view,
+ gdouble x,
+ gdouble y)
+{
+ gint page = -1;
+ gint x_new = 0, y_new = 0;
+ EvMappingList *annotations_mapping;
+
+ if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
+ return NULL;
+
+ if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
+ return NULL;
+
+ annotations_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
+
+ if (annotations_mapping)
+ return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
+ else
+ return NULL;
+}
+
+static void
+ev_view_annotation_show_popup_window (EvView *view,
+ GtkWidget *window)
+{
+ EvViewWindowChild *child;
+
+ if (!window)
+ return;
+
+ child = ev_view_get_window_child (view, window);
+ if (!child->visible) {
+ child->visible = TRUE;
+ ev_view_window_child_move (view, child, child->x, child->y);
+ gtk_widget_show (window);
+ }
+}
+
+static void
+ev_view_handle_annotation (EvView *view,
+ EvAnnotation *annot,
+ gdouble x,
+ gdouble y,
+ guint32 timestamp)
+{
+ if (EV_IS_ANNOTATION_MARKUP (annot)) {
+ GtkWidget *window;
+
+ window = g_object_get_data (G_OBJECT (annot), "popup");
+ ev_view_annotation_show_popup_window (view, window);
+ }
+
+ if (EV_IS_ANNOTATION_ATTACHMENT (annot)) {
+ EvAttachment *attachment;
+
+ attachment = ev_annotation_attachment_get_attachment (EV_ANNOTATION_ATTACHMENT (annot));
+ if (attachment) {
+ GError *error = NULL;
+
+ ev_attachment_open (attachment,
+ gtk_widget_get_screen (GTK_WIDGET (view)),
+ timestamp,
+ &error);
+
+ if (error) {
+ g_warning ("%s", error->message);
+ g_error_free (error);
+ }
+ }
+ }
+}
+
+static void
+ev_view_create_annotation (EvView *view,
+ EvAnnotationType annot_type,
+ gint x,
+ gint y)
+{
+ EvAnnotation *annot;
+ GdkPoint point;
+ GdkRectangle page_area;
+ GtkBorder border;
+ EvRectangle doc_rect, popup_rect;
+ EvPage *page;
+ GdkColor color = { 0, 65535, 65535, 0 };
+ GdkRectangle view_rect;
+ cairo_region_t *region;
+
+ point.x = x;
+ point.y = y;
+ ev_view_get_page_extents (view, view->current_page, &page_area, &border);
+ view_point_to_doc_point (view, &point, &page_area,
+ &doc_rect.x1, &doc_rect.y1);
+ doc_rect.x2 = doc_rect.x1 + 24;
+ doc_rect.y2 = doc_rect.y1 + 24;
+
+ ev_document_doc_mutex_lock ();
+ page = ev_document_get_page (view->document, view->current_page);
+ switch (annot_type) {
+ case EV_ANNOTATION_TYPE_TEXT:
+ annot = ev_annotation_text_new (page);
+ break;
+ case EV_ANNOTATION_TYPE_ATTACHMENT:
+ /* TODO */
+ g_object_unref (page);
+ ev_document_doc_mutex_unlock ();
+ return;
+ default:
+ g_assert_not_reached ();
+ }
+ g_object_unref (page);
+
+ ev_annotation_set_color (annot, &color);
+
+ if (EV_IS_ANNOTATION_MARKUP (annot)) {
+ popup_rect.x1 = doc_rect.x2;
+ popup_rect.x2 = popup_rect.x1 + 200;
+ popup_rect.y1 = doc_rect.y2;
+ popup_rect.y2 = popup_rect.y1 + 150;
+ g_object_set (annot,
+ "rectangle", &popup_rect,
+ "has_popup", TRUE,
+ "popup_is_open", FALSE,
+ "label", g_get_real_name (),
+ "opacity", 1.0,
+ NULL);
+ }
+ ev_document_annotations_add_annotation (EV_DOCUMENT_ANNOTATIONS (view->document),
+ annot, &doc_rect);
+ ev_document_doc_mutex_unlock ();
+
+ /* If the page didn't have annots, mark the cache as dirty */
+ if (!ev_page_cache_get_annot_mapping (view->page_cache, view->current_page))
+ ev_page_cache_mark_dirty (view->page_cache, view->current_page);
+
+ if (EV_IS_ANNOTATION_MARKUP (annot)) {
+ GtkWindow *parent;
+ GtkWidget *window;
+
+ parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
+ window = ev_view_create_annotation_window (view, annot, parent);
+
+ /* Show the annot window the first time */
+ ev_view_annotation_show_popup_window (view, window);
+ }
+
+ doc_rect_to_view_rect (view, view->current_page, &doc_rect, &view_rect);
+ view_rect.x -= view->scroll_x;
+ view_rect.y -= view->scroll_y;
+ region = cairo_region_create_rectangle (&view_rect);
+ ev_view_reload_page (view, view->current_page, region);
+ cairo_region_destroy (region);
+
+ g_signal_emit (view, signals[SIGNAL_ANNOT_ADDED], 0, annot);
+}
+
+void
+ev_view_focus_annotation (EvView *view,
+ EvMapping *annot_mapping)
+{
+ GdkRectangle view_rect;
+ EvAnnotation *annot;
+ guint page;
+
+ if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
+ return;
+
+ if (view->focus_annotation == annot_mapping)
+ return;
+
+ view->focus_annotation = annot_mapping;
+ annot = (EvAnnotation *)annot_mapping->data;
+
+ page = ev_annotation_get_page_index (annot);
+ ev_document_model_set_page (view->model, page);
+
+ doc_rect_to_view_rect (view, page,
+ &annot_mapping->area, &view_rect);
+ ensure_rectangle_is_visible (view, &view_rect);
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+}
+
+void
+ev_view_begin_add_annotation (EvView *view,
+ EvAnnotationType annot_type)
+{
+ if (annot_type == EV_ANNOTATION_TYPE_UNKNOWN)
+ return;
+
+ if (view->adding_annot)
+ return;
+
+ view->adding_annot = TRUE;
+ view->adding_annot_type = annot_type;
+ ev_view_set_cursor (view, EV_VIEW_CURSOR_ADD);
+}
+
+void
+ev_view_cancel_add_annotation (EvView *view)
+{
+ gint x, y;
+
+ if (!view->adding_annot)
+ return;
+
+ view->adding_annot = FALSE;
+ gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
+ ev_view_handle_cursor_over_xy (view, x, y);
+}
+
+static gboolean
+ev_view_synctex_backward_search (EvView *view,
+ gdouble x,
+ gdouble y)
+{
+ gint page = -1;
+ gint x_new = 0, y_new = 0;
+ EvSourceLink *link;
+
+ if (!ev_document_has_synctex (view->document))
+ return FALSE;
+
+ if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
+ return FALSE;
+
+ link = ev_document_synctex_backward_search (view->document, page, x_new, y_new);
+ if (link) {
+ g_signal_emit (view, signals[SIGNAL_SYNC_SOURCE], 0, link);
+ g_free (link);
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/*** GtkWidget implementation ***/
+
+static void
+ev_view_size_request_continuous_dual_page (EvView *view,
+ GtkRequisition *requisition)
+{
+ gint n_pages;
+
+ n_pages = ev_document_get_n_pages (view->document) + 1;
+ get_page_y_offset (view, n_pages, &requisition->height);
+
+ switch (view->sizing_mode) {
+ case EV_SIZING_FIT_WIDTH:
+ case EV_SIZING_BEST_FIT:
+ requisition->width = 1;
+
+ break;
+ case EV_SIZING_FREE: {
+ gint max_width;
+ GtkBorder border;
+
+ ev_view_get_max_page_size (view, &max_width, NULL);
+ compute_border (view, max_width, max_width, &border);
+ requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+static void
+ev_view_size_request_continuous (EvView *view,
+ GtkRequisition *requisition)
+{
+ gint n_pages;
+
+ n_pages = ev_document_get_n_pages (view->document);
+ get_page_y_offset (view, n_pages, &requisition->height);
+
+ switch (view->sizing_mode) {
+ case EV_SIZING_FIT_WIDTH:
+ case EV_SIZING_BEST_FIT:
+ requisition->width = 1;
+
+ break;
+ case EV_SIZING_FREE: {
+ gint max_width;
+ GtkBorder border;
+
+ ev_view_get_max_page_size (view, &max_width, NULL);
+ compute_border (view, max_width, max_width, &border);
+ requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+static void
+ev_view_size_request_dual_page (EvView *view,
+ GtkRequisition *requisition)
+{
+ GtkBorder border;
+ gint width, height;
+
+ if (view->sizing_mode == EV_SIZING_BEST_FIT) {
+ requisition->width = 1;
+ requisition->height = 1;
+
+ return;
+ }
+
+ /* Find the largest of the two. */
+ ev_view_get_page_size (view,
+ view->current_page,
+ &width, &height);
+ if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
+ gint width_2, height_2;
+ ev_view_get_page_size (view,
+ view->current_page + 1,
+ &width_2, &height_2);
+ if (width_2 > width) {
+ width = width_2;
+ height = height_2;
+ }
+ }
+ compute_border (view, width, height, &border);
+
+ requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
+ ((width + border.left + border.right) * 2) + (view->spacing * 3);
+ requisition->height = (height + border.top + border.bottom) + (view->spacing * 2);
+}
+
+static void
+ev_view_size_request_single_page (EvView *view,
+ GtkRequisition *requisition)
+{
+ GtkBorder border;
+ gint width, height;
+
+ if (view->sizing_mode == EV_SIZING_BEST_FIT) {
+ requisition->width = 1;
+ requisition->height = 1;
+
+ return;
+ }
+
+ ev_view_get_page_size (view, view->current_page, &width, &height);
+ compute_border (view, width, height, &border);
+
+ requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
+ width + border.left + border.right + (2 * view->spacing);
+ requisition->height = height + border.top + border.bottom + (2 * view->spacing);
+}
+
+static void
+ev_view_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ EvView *view = EV_VIEW (widget);
+
+ if (view->document == NULL) {
+ view->requisition.width = 1;
+ view->requisition.height = 1;
+
+ *requisition = view->requisition;
+
+ return;
+ }
+
+ /* Get zoom for size here when not called from
+ * ev_view_size_allocate()
+ */
+ if (!view->internal_size_request &&
+ (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
+ view->sizing_mode == EV_SIZING_BEST_FIT)) {
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (widget, &allocation);
+ ev_view_zoom_for_size (view,
+ allocation.width,
+ allocation.height);
+ }
+
+ if (view->continuous && view->dual_page)
+ ev_view_size_request_continuous_dual_page (view, &view->requisition);
+ else if (view->continuous)
+ ev_view_size_request_continuous (view, &view->requisition);
+ else if (view->dual_page)
+ ev_view_size_request_dual_page (view, &view->requisition);
+ else
+ ev_view_size_request_single_page (view, &view->requisition);
+
+ *requisition = view->requisition;
+}
+
+static void
+ev_view_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ EvView *view = EV_VIEW (widget);
+ GList *children, *l;
+ gint root_x, root_y;
+
+ GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
+
+ if (!view->document)
+ return;
+
+ if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
+ view->sizing_mode == EV_SIZING_BEST_FIT) {
+ GtkRequisition req;
+
+ ev_view_zoom_for_size (view,
+ allocation->width,
+ allocation->height);
+ view->internal_size_request = TRUE;
+ ev_view_size_request (widget, &req);
+ view->internal_size_request = FALSE;
+ }
+
+ 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;
+ view->pending_point.x = 0;
+ view->pending_point.y = 0;
+
+ children = gtk_container_get_children (GTK_CONTAINER (widget));
+ for (l = children; l && l->data; l = g_list_next (l)) {
+ EvFormField *field;
+ GdkRectangle view_area;
+ EvMappingList *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_page_cache_get_form_field_mapping (view->page_cache,
+ field->page->index);
+ ev_view_get_area_from_mapping (view, field->page->index,
+ form_field_mapping,
+ field, &view_area);
+
+ 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);
+
+ if (view->window_children)
+ gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
+ &root_x, &root_y);
+
+ for (l = view->window_children; l && l->data; l = g_list_next (l)) {
+ EvViewWindowChild *child;
+ EvRectangle doc_rect;
+ GdkRectangle view_rect;
+
+ child = (EvViewWindowChild *)l->data;
+
+ ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window), &doc_rect);
+ if (child->moved) {
+ doc_rect.x1 = child->orig_x;
+ doc_rect.y1 = child->orig_y;
+ }
+ doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
+ view_rect.x -= view->scroll_x;
+ view_rect.y -= view->scroll_y;
+
+ if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
+ child->parent_x = root_x;
+ child->parent_y = root_y;
+ ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
+ }
+ }
+}
+
+static void
+ev_view_realize (GtkWidget *widget)
+{
+ EvView *view = EV_VIEW (widget);
+ GdkWindow *bin_window;
+ GtkStyle *style;
+
+ if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
+ (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+ gdk_window_set_events (bin_window,
+ (gdk_window_get_events (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));
+
+ style = gtk_widget_get_style (widget);
+ gdk_window_set_background (bin_window, &style->mid[GTK_STATE_NORMAL]);
+
+ on_adjustment_value_changed (NULL, view);
+}
+
+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) {
+ ev_document_model_set_sizing_mode (view->model, 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->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous) {
+ 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 gboolean
+ev_view_expose_event (GtkWidget *widget,
+ GdkEventExpose *event)
+{
+ EvView *view = EV_VIEW (widget);
+ GdkWindow *bin_window;
+ cairo_t *cr;
+ gint i;
+
+ if (view->loading) {
+ show_loading_window (view);
+ } else if (view->loading_window &&
+ gtk_widget_get_visible (view->loading_window)) {
+ ev_view_loading_window_move (view);
+ }
+
+ if (view->document == NULL)
+ return FALSE;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+ cr = gdk_cairo_create (bin_window);
+
+ for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
+ GdkRectangle page_area;
+ GtkBorder border;
+ gboolean page_ready = TRUE;
+
+ if (!ev_view_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);
+ if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
+ show_annotation_windows (view, i);
+ if (page_ready && view->focus_annotation)
+ focus_annotation (view, i, &event->area);
+ if (page_ready && view->synctex_result)
+ highlight_forward_search_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)
+{
+ GList *items = NULL;
+ EvLink *link;
+ EvImage *image;
+ EvAnnotation *annot;
+
+ image = ev_view_get_image_at_location (view, x, y);
+ if (image)
+ items = g_list_prepend (items, image);
+
+ link = ev_view_get_link_at_location (view, x, y);
+ if (link)
+ items = g_list_prepend (items, link);
+
+ annot = ev_view_get_annotation_at_location (view, x, y);
+ if (annot)
+ items = g_list_prepend (items, annot);
+
+ g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, items);
+
+ g_list_free (items);
+
+ 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)
+{
+ EvMappingList *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_page_cache_get_link_mapping (view->page_cache, page);
+ ev_view_get_area_from_mapping (view, page,
+ link_mapping,
+ link, area);
+}
+
+static void
+get_annot_area (EvView *view,
+ gint x,
+ gint y,
+ EvAnnotation *annot,
+ GdkRectangle *area)
+{
+ EvMappingList *annot_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);
+
+ annot_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
+ ev_view_get_area_from_mapping (view, page,
+ annot_mapping,
+ annot, area);
+}
+
+static gboolean
+ev_view_query_tooltip (GtkWidget *widget,
+ gint x,
+ gint y,
+ gboolean keyboard_tip,
+ GtkTooltip *tooltip)
+{
+ EvView *view = EV_VIEW (widget);
+ EvLink *link;
+ EvAnnotation *annot;
+ gchar *text;
+
+ annot = ev_view_get_annotation_at_location (view, x, y);
+ if (annot) {
+ const gchar *contents;
+
+ if ((contents = ev_annotation_get_contents (annot))) {
+ GdkRectangle annot_area;
+
+ get_annot_area (view, x, y, annot, &annot_area);
+ gtk_tooltip_set_text (tooltip, contents);
+ gtk_tooltip_set_tip_area (tooltip, &annot_area);
+
+ return TRUE;
+ }
+ }
+
+ 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)
+{
+ 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:
+ view->selection_info.style = EV_SELECTION_STYLE_WORD;
+ break;
+ case GDK_3BUTTON_PRESS:
+ view->selection_info.style = EV_SELECTION_STYLE_LINE;
+ break;
+ default:
+ view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
+ return;
+ }
+
+ /* In case of WORD or LINE, compute selections now */
+ compute_selections (view,
+ view->selection_info.style,
+ &(view->selection_info.start),
+ &(view->selection_info.start));
+}
+
+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);
+ }
+
+ if (view->window_child_focus) {
+ EvAnnotationWindow *window;
+ EvAnnotation *annot;
+
+ window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
+ annot = ev_annotation_window_get_annotation (window);
+ ev_annotation_window_ungrab_focus (window);
+ view->window_child_focus = NULL;
+ }
+
+ view->pressed_button = event->button;
+ view->selection_info.in_drag = FALSE;
+
+ if (view->adding_annot)
+ return FALSE;
+
+ if (view->scroll_info.autoscrolling)
+ return TRUE;
+
+ switch (event->button) {
+ case 1: {
+ EvImage *image;
+ EvAnnotation *annot;
+ EvFormField *field;
+
+ if (event->state & GDK_CONTROL_MASK)
+ return ev_view_synctex_backward_search (view, event->x , event->y);
+
+ 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 ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
+ ev_view_handle_annotation (view, annot, event->x, event->y, event->time);
+ } 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 (view->synctex_result) {
+ g_free (view->synctex_result);
+ view->synctex_result = NULL;
+ gtk_widget_queue_draw (widget);
+ }
+
+ if (view->focus_annotation)
+ view->focus_annotation = NULL;
+
+ 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[2];
+
+ 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[0] = (gchar *)tmp_uri;
+ uris[1] = NULL;
+ gtk_selection_data_set_uris (selection_data, 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, gdk_drag_context_get_suggested_action (context), 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);
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (widget, &allocation);
+ gtk_widget_get_pointer (widget, &x, &y);
+
+ if (y > allocation.height) {
+ shift = (y - allocation.height) / 2;
+ } else if (y < 0) {
+ shift = y / 2;
+ }
+
+ if (shift)
+ gtk_adjustment_set_value (view->vadjustment,
+ CLAMP (gtk_adjustment_get_value (view->vadjustment) + shift,
+ gtk_adjustment_get_lower (view->vadjustment),
+ gtk_adjustment_get_upper (view->vadjustment) -
+ gtk_adjustment_get_page_size (view->vadjustment)));
+
+ if (x > allocation.width) {
+ shift = (x - allocation.width) / 2;
+ } else if (x < 0) {
+ shift = x / 2;
+ }
+
+ if (shift)
+ gtk_adjustment_set_value (view->hadjustment,
+ CLAMP (gtk_adjustment_get_value (view->hadjustment) + shift,
+ gtk_adjustment_get_lower (view->hadjustment),
+ gtk_adjustment_get_upper (view->hadjustment) -
+ gtk_adjustment_get_page_size (view->hadjustment)));
+
+ 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;
+ gdouble h_page_size, v_page_size;
+ gdouble h_upper, v_upper;
+ GtkAllocation allocation;
+
+ view->drag_info.momentum.x /= 1.2;
+ view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
+
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+
+ h_page_size = gtk_adjustment_get_page_size (view->hadjustment);
+ v_page_size = gtk_adjustment_get_page_size (view->vadjustment);
+
+ dhadj_value = h_page_size *
+ (gdouble)view->drag_info.momentum.x / allocation.width;
+ dvadj_value = v_page_size *
+ (gdouble)view->drag_info.momentum.y / allocation.height;
+
+ oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
+ oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
+
+ h_upper = gtk_adjustment_get_upper (view->hadjustment);
+ v_upper = gtk_adjustment_get_upper (view->vadjustment);
+
+ /* When we reach the edges, we need either to absorb some momentum and bounce by
+ * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
+ if (((oldhadjustment + dhadj_value) > (h_upper - h_page_size)) ||
+ ((oldhadjustment + dhadj_value) < 0))
+ view->drag_info.momentum.x = 0;
+ if (((oldvadjustment + dvadj_value) > (v_upper - v_page_size)) ||
+ ((oldvadjustment + dvadj_value) < 0))
+ view->drag_info.momentum.y = 0;
+
+ gtk_adjustment_set_value (view->hadjustment,
+ MIN (oldhadjustment + dhadj_value,
+ h_upper - h_page_size));
+ gtk_adjustment_set_value (view->vadjustment,
+ MIN (oldvadjustment + dvadj_value,
+ v_upper - v_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);
+ GdkWindow *bin_window;
+ gint x, y;
+
+ if (!view->document)
+ return FALSE;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+
+ if (event->is_hint || event->window != 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;
+ GtkAllocation allocation;
+
+ 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;
+
+ gtk_widget_get_allocation (widget, &allocation);
+
+ dhadj_value = gtk_adjustment_get_page_size (view->hadjustment) *
+ (gdouble)dx / allocation.width;
+ dvadj_value = gtk_adjustment_get_page_size (view->vadjustment) *
+ (gdouble)dy / allocation.height;
+
+ /* clamp scrolling to visible area */
+ gtk_adjustment_set_value (view->hadjustment,
+ MIN (view->drag_info.hadj - dhadj_value,
+ gtk_adjustment_get_upper (view->hadjustment) -
+ gtk_adjustment_get_page_size (view->hadjustment)));
+ gtk_adjustment_set_value (view->vadjustment,
+ MIN (view->drag_info.vadj - dvadj_value,
+ gtk_adjustment_get_upper (view->vadjustment) -
+ gtk_adjustment_get_page_size (view->vadjustment)));
+
+ 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->pressed_button == 1 && event->state & GDK_CONTROL_MASK) {
+ 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->adding_annot && view->pressed_button == 1) {
+ view->adding_annot = FALSE;
+ ev_view_handle_cursor_over_xy (view, event->x, event->y);
+ view->pressed_button = -1;
+
+ ev_view_create_annotation (view,
+ view->adding_annot_type,
+ event->x + view->scroll_x,
+ event->y + view->scroll_y);
+
+ return 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.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);
+ }
+ }
+
+ return FALSE;
+}
+
+static gboolean
+ev_view_key_press_event (GtkWidget *widget,
+ GdkEventKey *event)
+{
+ EvView *view = EV_VIEW (widget);
+
+ if (!view->document)
+ return FALSE;
+
+ if (!gtk_widget_has_focus (widget)) {
+ /* Forward key events to current focused window child */
+ if (view->window_child_focus) {
+ GdkEventKey *new_event;
+ gboolean handled;
+
+ new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
+ g_object_unref (new_event->window);
+ new_event->window = gtk_widget_get_window (view->window_child_focus->window);
+ if (new_event->window)
+ g_object_ref (new_event->window);
+ gtk_widget_realize (view->window_child_focus->window);
+ handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
+ gdk_event_free ((GdkEvent *)new_event);
+
+ return handled;
+ }
+
+ return FALSE;
+ }
+
+ return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
+}
+
+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)->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 void
+draw_rubberband (EvView *view,
+ GdkWindow *window,
+ const GdkRectangle *rect,
+ gdouble alpha)
+{
+ GtkStyle *style;
+ GdkColor *fill_color_gdk;
+ gdouble r, g, b;
+ cairo_t *cr;
+
+ style = gtk_widget_get_style (GTK_WIDGET (view));
+ fill_color_gdk = gdk_color_copy (&style->base[GTK_STATE_SELECTED]);
+ r = fill_color_gdk->red / 65535.;
+ g = fill_color_gdk->green / 65535.;
+ b = fill_color_gdk->blue / 65535.;
+
+ cr = gdk_cairo_create (window);
+
+ cairo_set_source_rgba (cr, r, g, b, alpha);
+ cairo_rectangle (cr,
+ rect->x - view->scroll_x,
+ rect->y - view->scroll_y,
+ rect->width, rect->height);
+ cairo_fill_preserve (cr);
+
+ cairo_set_line_width (cr, 0.5);
+ cairo_set_source_rgb (cr, r, g, b);
+ cairo_stroke (cr);
+
+ cairo_destroy (cr);
+
+ gdk_color_free (fill_color_gdk);
+}
+
+
+static void
+highlight_find_results (EvView *view, int page)
+{
+ gint i, n_results = 0;
+ GdkWindow *bin_window;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+
+ n_results = ev_view_find_get_n_results (view, page);
+
+ for (i = 0; i < n_results; i++) {
+ EvRectangle *rectangle;
+ GdkRectangle view_rectangle;
+ gdouble alpha;
+
+ if (i == view->find_result && page == view->current_page) {
+ alpha = 0.6;
+ } else {
+ alpha = 0.3;
+ }
+
+ rectangle = ev_view_find_get_result (view, page, i);
+ doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
+ draw_rubberband (view, bin_window, &view_rectangle, alpha);
+ }
+}
+
+static void
+highlight_forward_search_results (EvView *view, int page)
+{
+ GdkWindow *bin_window;
+ GdkRectangle rect;
+ cairo_t *cr;
+ EvMapping *mapping = view->synctex_result;
+
+ if (GPOINTER_TO_INT (mapping->data) != page)
+ return;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+ doc_rect_to_view_rect (view, page, &mapping->area, &rect);
+
+ cr = gdk_cairo_create (bin_window);
+ cairo_set_source_rgb (cr, 1., 0., 0.);
+ cairo_rectangle (cr,
+ rect.x - view->scroll_x,
+ rect.y - view->scroll_y,
+ rect.width, rect.height);
+ cairo_stroke (cr);
+ cairo_destroy (cr);
+}
+
+static void
+focus_annotation (EvView *view,
+ gint page,
+ GdkRectangle *clip)
+{
+ GtkWidget *widget = GTK_WIDGET (view);
+ GdkRectangle rect;
+ EvMapping *mapping = view->focus_annotation;
+ EvAnnotation *annot = (EvAnnotation *)mapping->data;
+
+ if (ev_annotation_get_page_index (annot) != page)
+ return;
+
+ doc_rect_to_view_rect (view, page, &mapping->area, &rect);
+ gtk_paint_focus (gtk_widget_get_style (widget),
+ gtk_layout_get_bin_window (GTK_LAYOUT (view)),
+ gtk_widget_get_state (widget),
+ NULL, widget, NULL,
+ rect.x - view->scroll_x,
+ rect.y - view->scroll_y,
+ rect.width + 1, rect.height + 1);
+}
+
+static void
+ev_view_loading_window_move (EvView *view)
+{
+ GtkWidget *widget = GTK_WIDGET (view);
+ EvLoadingWindow *window = EV_LOADING_WINDOW (view->loading_window);
+ gint root_x, root_y;
+ gint window_width;
+ GtkAllocation allocation;
+
+ gtk_widget_get_allocation (widget, &allocation);
+ gdk_window_get_origin (gtk_widget_get_window (widget), &root_x, &root_y);
+ ev_loading_window_get_size (window, &window_width, NULL);
+
+ root_x += allocation.width - window_width - 10;
+ root_y += 10;
+
+ ev_loading_window_move (window, root_x, root_y);
+}
+
+static gboolean
+show_loading_window_cb (EvView *view)
+{
+ if (!view->loading_window) {
+ GtkWindow *parent;
+ GdkScreen *screen;
+
+ parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
+ view->loading_window = ev_loading_window_new (parent);
+
+ /* Show the window off screen to get a valid size asap */
+ screen = gtk_widget_get_screen (GTK_WIDGET (view));
+ gtk_window_move (GTK_WINDOW (view->loading_window),
+ gdk_screen_get_width (screen) + 1,
+ gdk_screen_get_height (screen) + 1);
+ gtk_widget_show (view->loading_window);
+ }
+
+ ev_view_loading_window_move (view);
+
+ gtk_widget_show (view->loading_window);
+
+ view->loading_timeout = 0;
+
+ return FALSE;
+}
+
+static void
+show_loading_window (EvView *view)
+{
+ if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
+ ev_view_loading_window_move (view);
+ return;
+ }
+
+ if (!view->loading_timeout) {
+ view->loading_timeout =
+ g_timeout_add_full (G_PRIORITY_LOW,
+ 0.5, (GSourceFunc)show_loading_window_cb,
+ view, NULL);
+ }
+}
+
+static void
+hide_loading_window (EvView *view)
+{
+ if (view->loading_timeout) {
+ g_source_remove (view->loading_timeout);
+ view->loading_timeout = 0;
+ }
+
+ if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
+ gtk_widget_hide (view->loading_window);
+ }
+}
+
+static void
+draw_one_page (EvView *view,
+ gint page,
+ cairo_t *cr,
+ GdkRectangle *page_area,
+ GtkBorder *border,
+ GdkRectangle *expose_area,
+ gboolean *page_ready)
+{
+ GdkWindow *bin_window;
+ GdkRectangle overlap;
+ GdkRectangle real_page_area;
+ gint current_page;
+ gboolean inverted_colors;
+
+ 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;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+ current_page = ev_document_model_get_page (view->model);
+ inverted_colors = ev_document_model_get_inverted_colors (view->model);
+ ev_document_misc_paint_one_page (cr,
+ GTK_WIDGET (view),
+ page_area, border,
+ page == current_page,
+ inverted_colors);
+
+ 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 (page == current_page)
+ show_loading_window (view);
+
+ *page_ready = FALSE;
+
+ return;
+ }
+
+ if (page == current_page)
+ hide_loading_window (view);
+
+ ev_view_get_page_size (view, page, &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->synctex_result) {
+ g_free (view->synctex_result);
+ view->synctex_result = NULL;
+ }
+
+ 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->model) {
+ g_object_unref (view->model);
+ view->model = NULL;
+ }
+
+ if (view->pixbuf_cache) {
+ g_object_unref (view->pixbuf_cache);
+ view->pixbuf_cache = NULL;
+ }
+
+ if (view->document) {
+ g_object_unref (view->document);
+ view->document = NULL;
+ }
+
+ if (view->page_cache) {
+ g_object_unref (view->page_cache);
+ view->page_cache = NULL;
+ }
+
+ ev_view_window_children_free (view);
+
+ 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->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;
+ }
+
+ if (view->loading_timeout) {
+ g_source_remove (view->loading_timeout);
+ view->loading_timeout = 0;
+ }
+
+ ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
+
+ GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
+}
+
+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 ());
+ EV_VIEW (widget)->a11y_enabled = TRUE;
+ }
+ first_time = FALSE;
+ }
+ return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
+}
+
+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;
+
+ 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_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__POINTER,
+ G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
+ signals[SIGNAL_SELECTION_CHANGED] = g_signal_new ("selection-changed",
+ G_TYPE_FROM_CLASS (object_class),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (EvViewClass, selection_changed),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0,
+ G_TYPE_NONE);
+ signals[SIGNAL_SYNC_SOURCE] = g_signal_new ("sync-source",
+ G_TYPE_FROM_CLASS (object_class),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (EvViewClass, sync_source),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
+ signals[SIGNAL_ANNOT_ADDED] = g_signal_new ("annot-added",
+ G_TYPE_FROM_CLASS (object_class),
+ G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+ G_STRUCT_OFFSET (EvViewClass, annot_added),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE, 1,
+ EV_TYPE_ANNOTATION);
+
+ 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_can_focus (GTK_WIDGET (view), TRUE);
+
+ view->start_page = -1;
+ view->end_page = -1;
+ 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->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)
+{
+ gint x, y;
+
+ view->current_page = new_page;
+ view->pending_scroll = SCROLL_TO_PAGE_POSITION;
+
+ hide_loading_window (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
+job_finished_cb (EvPixbufCache *pixbuf_cache,
+ cairo_region_t *region,
+ EvView *view)
+{
+ if (region) {
+ GdkWindow *bin_window;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+#if GTK_CHECK_VERSION(2, 90, 5)
+ gdk_window_invalidate_region (bin_window, region, TRUE);
+#else
+ {
+ GdkRegion *gdk_region = gdk_region_new ();
+ guint n_recs = cairo_region_num_rectangles (region);
+ guint i;
+
+ for (i = 0; i < n_recs; i++) {
+ cairo_rectangle_int_t rect;
+
+ cairo_region_get_rectangle (region, i, &rect);
+ gdk_region_union_with_rect (gdk_region, (GdkRectangle *)&rect);
+ }
+ gdk_window_invalidate_region (bin_window, gdk_region, TRUE);
+ gdk_region_destroy (gdk_region);
+ }
+#endif
+ } else {
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+ }
+}
+
+static void
+ev_view_page_changed_cb (EvDocumentModel *model,
+ gint old_page,
+ gint new_page,
+ EvView *view)
+{
+ if (!view->document)
+ return;
+
+ if (view->current_page != new_page) {
+ ev_view_change_page (view, new_page);
+ } 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;
+ gint value;
+ GList *children, *l;
+
+ if (!gtk_widget_get_realized (GTK_WIDGET (view)))
+ return;
+
+ if (view->hadjustment) {
+ value = (gint) gtk_adjustment_get_value (view->hadjustment);
+ dx = view->scroll_x - value;
+ view->scroll_x = value;
+ } else {
+ view->scroll_x = 0;
+ }
+
+ if (view->vadjustment) {
+ value = (gint) gtk_adjustment_get_value (view->vadjustment);
+ dy = view->scroll_y - value;
+ view->scroll_y = 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);
+
+ for (l = view->window_children; l && l->data; l = g_list_next (l)) {
+ EvViewWindowChild *child;
+
+ child = (EvViewWindowChild *)l->data;
+
+ ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
+ }
+
+ if (view->pending_resize) {
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+ } else {
+ GdkWindow *bin_window;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+ gdk_window_scroll (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)
+{
+ gboolean inverted_colors;
+
+ view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
+ view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->model, view->pixbuf_cache_size);
+ view->page_cache = ev_page_cache_new (view->document);
+ if (view->a11y_enabled) {
+ EvJobPageDataFlags flags = ev_page_cache_get_flags (view->page_cache);
+
+ ev_page_cache_set_flags (view->page_cache,
+ flags |
+ EV_PAGE_DATA_INCLUDE_TEXT_LAYOUT |
+ EV_PAGE_DATA_INCLUDE_TEXT);
+ }
+ inverted_colors = ev_document_model_get_inverted_colors (view->model);
+ ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
+ g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), 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) {
+ g_object_unref (view->page_cache);
+ view->page_cache = NULL;
+ }
+}
+
+/**
+ * ev_view_set_page_cache_size:
+ * @view:
+ * @cache_size:
+ *
+ * Sets the maximum size in bytes that will be used to cache
+ * rendered pages. Use 0 to disable caching rendered pages.
+ *
+ * Note that this limit doesn't affect the current visible page range,
+ * which will always be rendered. In order to limit the total memory used
+ * you have to use ev_document_model_set_max_scale() too.
+ *
+ */
+void
+ev_view_set_page_cache_size (EvView *view,
+ gsize cache_size)
+{
+ if (view->pixbuf_cache_size == cache_size)
+ return;
+
+ view->pixbuf_cache_size = cache_size;
+ if (view->pixbuf_cache)
+ ev_pixbuf_cache_set_max_size (view->pixbuf_cache, cache_size);
+}
+
+void
+ev_view_set_loading (EvView *view,
+ gboolean loading)
+{
+ if (view->loading && !loading)
+ hide_loading_window (view);
+ 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,
+ gtk_adjustment_get_upper (view->vadjustment) -
+ gtk_adjustment_get_page_size (view->vadjustment));
+ 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);
+}
+
+static void
+ev_view_document_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ EvDocument *document = ev_document_model_get_document (model);
+
+ if (document != view->document) {
+ gint current_page;
+
+ clear_caches (view);
+
+ if (view->document) {
+ g_object_unref (view->document);
+ }
+
+ view->document = document;
+ view->find_result = 0;
+
+ if (view->document) {
+ view->loading = FALSE;
+ g_object_ref (view->document);
+ setup_caches (view);
+ }
+
+ current_page = ev_document_model_get_page (model);
+ if (view->current_page != current_page) {
+ ev_view_change_page (view, current_page);
+ } else {
+ view->pending_scroll = SCROLL_TO_KEEP_POSITION;
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+ }
+ }
+}
+
+static void
+ev_view_rotation_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ gint rotation = ev_document_model_get_rotation (model);
+
+ view->rotation = rotation;
+
+ if (view->pixbuf_cache) {
+ ev_pixbuf_cache_clear (view->pixbuf_cache);
+ if (!ev_document_is_page_size_uniform (view->document))
+ view->pending_scroll = SCROLL_TO_PAGE_POSITION;
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+ }
+
+ ev_view_remove_all (view);
+
+ if (rotation != 0)
+ clear_selection (view);
+}
+
+static void
+ev_view_inverted_colors_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ if (view->pixbuf_cache) {
+ gboolean inverted_colors;
+
+ inverted_colors = ev_document_model_get_inverted_colors (model);
+ ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+ }
+}
+
+static void
+ev_view_sizing_mode_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ EvSizingMode mode = ev_document_model_get_sizing_mode (model);
+
+ view->sizing_mode = mode;
+ if (mode != EV_SIZING_FREE)
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+}
+
+#define EPSILON 0.0000001
+static void
+ev_view_scale_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ gdouble scale = ev_document_model_get_scale (model);
+
+ if (ABS (view->scale - scale) < EPSILON)
+ return;
+
+ view->scale = scale;
+
+ view->pending_resize = TRUE;
+ if (view->sizing_mode == EV_SIZING_FREE)
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+}
+
+static void
+ev_view_continuous_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ gboolean continuous = ev_document_model_get_continuous (model);
+
+ view->continuous = continuous;
+ view->pending_scroll = SCROLL_TO_PAGE_POSITION;
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+}
+
+static void
+ev_view_dual_page_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ gboolean dual_page = ev_document_model_get_dual_page (model);
+
+ view->dual_page = dual_page;
+ view->pending_scroll = SCROLL_TO_PAGE_POSITION;
+ /* 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));
+}
+
+static void
+ev_view_fullscreen_changed_cb (EvDocumentModel *model,
+ GParamSpec *pspec,
+ EvView *view)
+{
+ gboolean fullscreen = ev_document_model_get_fullscreen (model);
+
+ view->fullscreen = fullscreen;
+ gtk_widget_queue_resize (GTK_WIDGET (view));
+}
+
+void
+ev_view_set_model (EvView *view,
+ EvDocumentModel *model)
+{
+ g_return_if_fail (EV_IS_VIEW (view));
+ g_return_if_fail (EV_IS_DOCUMENT_MODEL (model));
+
+ if (model == view->model)
+ return;
+
+ if (view->model) {
+ g_signal_handlers_disconnect_by_func (view->model,
+ ev_view_document_changed_cb,
+ view);
+ g_signal_handlers_disconnect_by_func (view->model,
+ ev_view_page_changed_cb,
+ view);
+ g_object_unref (view->model);
+ }
+ view->model = g_object_ref (model);
+
+ /* Initialize view from model */
+ view->rotation = ev_document_model_get_rotation (view->model);
+ view->sizing_mode = ev_document_model_get_sizing_mode (view->model);
+ view->scale = ev_document_model_get_scale (view->model);
+ view->continuous = ev_document_model_get_continuous (view->model);
+ view->dual_page = ev_document_model_get_dual_page (view->model);
+ view->fullscreen = ev_document_model_get_fullscreen (view->model);
+ ev_view_document_changed_cb (view->model, NULL, view);
+
+ g_signal_connect (view->model, "notify::document",
+ G_CALLBACK (ev_view_document_changed_cb),
+ view);
+ g_signal_connect (view->model, "notify::rotation",
+ G_CALLBACK (ev_view_rotation_changed_cb),
+ view);
+ g_signal_connect (view->model, "notify::inverted-colors",
+ G_CALLBACK (ev_view_inverted_colors_changed_cb),
+ view);
+ g_signal_connect (view->model, "notify::sizing-mode",
+ G_CALLBACK (ev_view_sizing_mode_changed_cb),
+ view);
+ g_signal_connect (view->model, "notify::scale",
+ G_CALLBACK (ev_view_scale_changed_cb),
+ view);
+ g_signal_connect (view->model, "notify::continuous",
+ G_CALLBACK (ev_view_continuous_changed_cb),
+ view);
+ g_signal_connect (view->model, "notify::dual-page",
+ G_CALLBACK (ev_view_dual_page_changed_cb),
+ view);
+ g_signal_connect (view->model, "notify::fullscreen",
+ G_CALLBACK (ev_view_fullscreen_changed_cb),
+ view);
+ g_signal_connect (view->model, "page-changed",
+ G_CALLBACK (ev_view_page_changed_cb),
+ view);
+}
+
+static void
+ev_view_reload_page (EvView *view,
+ gint page,
+ cairo_region_t *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 ***/
+
+gboolean
+ev_view_can_zoom_in (EvView *view)
+{
+ return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model);
+}
+
+gboolean
+ev_view_can_zoom_out (EvView *view)
+{
+ return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model);
+}
+
+void
+ev_view_zoom_in (EvView *view)
+{
+ gdouble scale;
+
+ g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
+
+ view->pending_scroll = SCROLL_TO_CENTER;
+ scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR;
+ ev_document_model_set_scale (view->model, scale);
+}
+
+void
+ev_view_zoom_out (EvView *view)
+{
+ gdouble scale;
+
+ g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
+
+ view->pending_scroll = SCROLL_TO_CENTER;
+ scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR;
+ ev_document_model_set_scale (view->model, scale);
+}
+
+static double
+zoom_for_size_fit_width (gdouble doc_width,
+ gdouble doc_height,
+ int target_width,
+ int target_height)
+{
+ return (double)target_width / doc_width;
+}
+
+static double
+zoom_for_size_fit_height (gdouble doc_width,
+ gdouble doc_height,
+ int target_width,
+ int target_height)
+{
+ return (double)target_height / doc_height;
+}
+
+static double
+zoom_for_size_best_fit (gdouble doc_width,
+ gdouble doc_height,
+ int target_width,
+ int target_height)
+{
+ double w_scale;
+ double h_scale;
+
+ w_scale = (double)target_width / doc_width;
+ h_scale = (double)target_height / doc_height;
+
+ return MIN (w_scale, h_scale);
+}
+
+static void
+ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
+ int width,
+ int height)
+{
+ gdouble doc_width, doc_height;
+ GtkBorder border;
+ gdouble scale;
+ gint sb_size;
+
+ ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
+ if (view->rotation == 90 || view->rotation == 270) {
+ gdouble tmp;
+
+ tmp = doc_width;
+ doc_width = doc_height;
+ doc_height = tmp;
+ }
+
+ compute_border (view, doc_width, doc_height, &border);
+
+ doc_width *= 2;
+ width -= (2 * (border.left + border.right) + 3 * view->spacing);
+ height -= (border.top + border.bottom + 2 * view->spacing - 1);
+
+ sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
+
+ if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
+ scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
+ } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
+ scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
+ else
+ g_assert_not_reached ();
+
+ ev_document_model_set_scale (view->model, scale);
+}
+
+static void
+ev_view_zoom_for_size_continuous (EvView *view,
+ int width,
+ int height)
+{
+ gdouble doc_width, doc_height;
+ GtkBorder border;
+ gdouble scale;
+ gint sb_size;
+
+ ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
+ if (view->rotation == 90 || view->rotation == 270) {
+ gdouble tmp;
+
+ tmp = doc_width;
+ doc_width = doc_height;
+ doc_height = tmp;
+ }
+
+ 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);
+
+ sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
+
+ if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
+ scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
+ } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
+ scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
+ else
+ g_assert_not_reached ();
+
+ ev_document_model_set_scale (view->model, scale);
+}
+
+static void
+ev_view_zoom_for_size_dual_page (EvView *view,
+ int width,
+ int height)
+{
+ GtkBorder border;
+ gdouble doc_width, doc_height;
+ gdouble scale;
+ gint other_page;
+
+ other_page = view->current_page ^ 1;
+
+ /* Find the largest of the two. */
+ get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
+ if (other_page < ev_document_get_n_pages (view->document)) {
+ gdouble width_2, height_2;
+
+ get_doc_page_size (view, other_page, &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, width, 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) {
+ gint sb_size;
+
+ sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
+ scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
+ } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
+ scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
+ else
+ g_assert_not_reached ();
+
+ ev_document_model_set_scale (view->model, scale);
+}
+
+static void
+ev_view_zoom_for_size_single_page (EvView *view,
+ int width,
+ int height)
+{
+ gdouble doc_width, doc_height;
+ GtkBorder border;
+ gdouble scale;
+
+ get_doc_page_size (view, view->current_page, &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) {
+ gint sb_size;
+
+ sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
+ scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
+ } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
+ scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
+ else
+ g_assert_not_reached ();
+
+ ev_document_model_set_scale (view->model, scale);
+}
+
+static void
+ev_view_zoom_for_size (EvView *view,
+ int width,
+ int 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->continuous && view->dual_page)
+ ev_view_zoom_for_size_continuous_and_dual_page (view, width, height);
+ else if (view->continuous)
+ ev_view_zoom_for_size_continuous (view, width, height);
+ else if (view->dual_page)
+ ev_view_zoom_for_size_dual_page (view, width, height);
+ else
+ ev_view_zoom_for_size_single_page (view, width, 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_document_get_n_pages (view->document);
+
+ 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_document_model_set_page (view->model, 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;
+}
+
+/*** Synctex ***/
+void
+ev_view_highlight_forward_search (EvView *view,
+ EvSourceLink *link)
+{
+ EvMapping *mapping;
+ gint page;
+ GdkRectangle view_rect;
+
+ if (!ev_document_has_synctex (view->document))
+ return;
+
+ mapping = ev_document_synctex_forward_search (view->document, link);
+ if (!mapping)
+ return;
+
+ if (view->synctex_result)
+ g_free (view->synctex_result);
+ view->synctex_result = mapping;
+
+ page = GPOINTER_TO_INT (mapping->data);
+ ev_document_model_set_page (view->model, page);
+
+ doc_rect_to_view_rect (view, page, &mapping->area, &view_rect);
+ ensure_rectangle_is_visible (view, &view_rect);
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+}
+
+/*** 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_document_get_n_pages (view->document);
+
+ for (i = 0; i < n_pages; i++) {
+ GdkRectangle page_area;
+ GtkBorder border;
+
+ if (ev_view_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;
+ gdouble width, height;
+ int start_page, end_page;
+
+ g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
+
+ n_pages = ev_document_get_n_pages (view->document);
+
+ /* 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;
+
+ ev_view_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;
+
+ get_doc_page_size (view, i, &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;
+
+ ev_view_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_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
+
+ 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;
+ cairo_region_t *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) {
+ cairo_region_t *tmp_region = NULL;
+
+ ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
+ cur_page,
+ view->scale,
+ &tmp_region);
+
+ if (tmp_region && !cairo_region_is_empty (tmp_region)) {
+ new_sel->covered_region = cairo_region_reference (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 = cairo_region_copy (old_sel->covered_region);
+#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 9, 12)
+ cairo_region_xor (region, new_sel->covered_region);
+#else
+ cairo_region_t *tbr;
+ tbr = cairo_region_copy (new_sel->covered_region);
+
+ /* xor old_sel, new_sel*/
+ cairo_region_subtract (tbr, region);
+ cairo_region_subtract (region, new_sel->covered_region);
+ cairo_region_union (region, tbr);
+ cairo_region_destroy (tbr);
+#endif
+
+ if (cairo_region_is_empty (region)) {
+ cairo_region_destroy (region);
+ region = NULL;
+ } else {
+ gint num_rectangles = cairo_region_num_rectangles (region);
+ GdkRectangle r;
+
+ /* We need to make the damage region a little bigger
+ * because the edges of the old selection might change
+ */
+ cairo_region_get_rectangle (region, 0, &r);
+ r.x -= 5;
+ r.width = 5;
+ cairo_region_union_rectangle (region, &r);
+
+ cairo_region_get_rectangle (region, num_rectangles - 1, &r);
+ r.x += r.width;
+ r.width = 5;
+ cairo_region_union_rectangle (region, &r);
+ }
+ } else if (old_sel->covered_region) {
+ region = cairo_region_copy (old_sel->covered_region);
+ } else if (new_sel->covered_region) {
+ region = cairo_region_copy (new_sel->covered_region);
+ }
+ } else if (old_sel && !new_sel) {
+ if (old_sel->covered_region && !cairo_region_is_empty (old_sel->covered_region)) {
+ region = cairo_region_copy (old_sel->covered_region);
+ }
+ } else if (!old_sel && new_sel) {
+ if (new_sel->covered_region && !cairo_region_is_empty (new_sel->covered_region)) {
+ region = cairo_region_copy (new_sel->covered_region);
+ }
+ } else {
+ g_assert_not_reached ();
+ }
+
+ /* Redraw the damaged region! */
+ if (region) {
+ GdkWindow *bin_window;
+ GdkRectangle page_area;
+ GtkBorder border;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+ ev_view_get_page_extents (view, cur_page, &page_area, &border);
+ cairo_region_translate (region,
+ page_area.x + border.left - view->scroll_x,
+ page_area.y + border.top - view->scroll_y);
+#if GTK_CHECK_VERSION(2, 90, 5)
+ gdk_window_invalidate_region (bin_window, region, TRUE);
+#else
+ {
+ GdkRegion *gdk_region = gdk_region_new ();
+ guint n_recs = cairo_region_num_rectangles (region);
+ guint i;
+
+ for (i = 0; i < n_recs; i++) {
+ cairo_rectangle_int_t rect;
+
+ cairo_region_get_rectangle (region, i, &rect);
+ gdk_region_union_with_rect (gdk_region, (GdkRectangle *)&rect);
+ }
+ gdk_window_invalidate_region (bin_window, gdk_region, TRUE);
+ gdk_region_destroy (gdk_region);
+ }
+#endif
+ cairo_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)
+ cairo_region_destroy (selection->covered_region);
+ g_free (selection);
+}
+
+static void
+clear_selection (EvView *view)
+{
+ if (view->selection_info.selections) {
+ g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
+ g_list_free (view->selection_info.selections);
+ view->selection_info.selections = NULL;
+
+ g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
+ }
+ view->selection_info.in_selection = FALSE;
+ if (view->pixbuf_cache)
+ ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
+}
+
+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_document_get_n_pages (view->document);
+ for (i = 0; i < n_pages; i++) {
+ gdouble width, height;
+ EvViewSelection *selection;
+
+ get_doc_page_size (view, i, &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;
+
+ text = g_string_new (NULL);
+
+ 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);
+ tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
+ page, selection->style,
+ &(selection->rect));
+ g_object_unref (page);
+ g_string_append (text, tmp);
+ g_free (tmp);
+ }
+
+ 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) {
+ GtkTargetList *target_list;
+ GtkTargetEntry *targets;
+ int n_targets;
+
+ target_list = gtk_target_list_new (NULL, 0);
+ gtk_target_list_add_text_targets (target_list, 0);
+ targets = gtk_target_table_new_from_list (target_list, &n_targets);
+ gtk_target_list_unref (target_list);
+
+ if (!gtk_clipboard_set_with_owner (clipboard,
+ targets, n_targets,
+ ev_view_primary_get_cb,
+ ev_view_primary_clear_cb,
+ G_OBJECT (ev_view)))
+ ev_view_primary_clear_cb (clipboard, ev_view);
+
+ gtk_target_table_free (targets, n_targets);
+ } 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 void
+ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
+{
+ GdkCursor *cursor = NULL;
+ GtkWidget *widget;
+ GdkWindow *bin_window;
+
+ if (view->cursor == new_cursor) {
+ return;
+ }
+
+ view->cursor = new_cursor;
+
+ bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
+ widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
+ cursor = ev_view_cursor_new (gtk_widget_get_display (widget), new_cursor);
+ gdk_window_set_cursor (bin_window, cursor);
+ gdk_flush ();
+ if (cursor)
+ gdk_cursor_unref (cursor);
+}
+
+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);
+}
+
+gboolean
+ev_view_next_page (EvView *view)
+{
+ int page, n_pages;
+
+ g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
+
+ if (!view->document)
+ return FALSE;
+
+ page = ev_document_model_get_page (view->model);
+ n_pages = ev_document_get_n_pages (view->document);
+
+ if (view->dual_page)
+ page = page + 2;
+ else
+ page = page + 1;
+
+ if (page < n_pages) {
+ ev_document_model_set_page (view->model, page);
+ return TRUE;
+ } else if (view->dual_page && page == n_pages) {
+ ev_document_model_set_page (view->model, 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->document)
+ return FALSE;
+
+ page = ev_document_model_get_page (view->model);
+
+ if (view->dual_page)
+ page = page - 2;
+ else
+ page = page - 1;
+
+ if (page >= 0) {
+ ev_document_model_set_page (view->model, page);
+ return TRUE;
+ } else if (view->dual_page && page == -1) {
+ ev_document_model_set_page (view->model, 0);
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-02 16:03:54 +0000