1 /* this file is part of evince, a gnome document viewer
3 * Copyright (C) 2004 Red Hat, Inc.
4 * Copyright (C) 2004, 2005 Anders Carlsson <andersca@gnome.org>
7 * Jonathan Blandford <jrb@alum.mit.edu>
8 * Anders Carlsson <andersca@gnome.org>
10 * Evince is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Evince is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
31 #include <glib/gi18n.h>
34 #include "ev-document-misc.h"
35 #include "ev-document-thumbnails.h"
36 #include "ev-job-scheduler.h"
37 #include "ev-sidebar-page.h"
38 #include "ev-sidebar-thumbnails.h"
40 #include "ev-window.h"
42 #define THUMBNAIL_WIDTH 100
44 /* The IconView doesn't scale nearly as well as the TreeView, so we arbitrarily
46 #define MAX_ICON_VIEW_PAGE_COUNT 1500
49 struct _EvSidebarThumbnailsPrivate {
53 GtkAdjustment *vadjustment;
54 GtkListStore *list_store;
55 GHashTable *loading_icons;
57 EvPageCache *page_cache;
59 gint n_pages, pages_done;
64 gint start_page, end_page;
80 static void ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar);
81 static gboolean ev_sidebar_thumbnails_support_document (EvSidebarPage *sidebar_page,
82 EvDocument *document);
83 static void ev_sidebar_thumbnails_page_iface_init (EvSidebarPageIface *iface);
84 static void ev_sidebar_thumbnails_set_document (EvSidebarPage *sidebar_page,
85 EvDocument *document);
86 static const gchar* ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page);
87 static void thumbnail_job_completed_callback (EvJobThumbnail *job,
88 EvSidebarThumbnails *sidebar_thumbnails);
89 static void adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails);
91 G_DEFINE_TYPE_EXTENDED (EvSidebarThumbnails,
92 ev_sidebar_thumbnails,
95 G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
96 ev_sidebar_thumbnails_page_iface_init))
98 #define EV_SIDEBAR_THUMBNAILS_GET_PRIVATE(object) \
99 (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_THUMBNAILS, EvSidebarThumbnailsPrivate));
103 ev_sidebar_thumbnails_dispose (GObject *object)
105 EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object);
107 if (sidebar_thumbnails->priv->loading_icons) {
108 g_hash_table_destroy (sidebar_thumbnails->priv->loading_icons);
109 sidebar_thumbnails->priv->loading_icons = NULL;
112 if (sidebar_thumbnails->priv->list_store) {
113 ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
114 g_object_unref (sidebar_thumbnails->priv->list_store);
115 sidebar_thumbnails->priv->list_store = NULL;
118 G_OBJECT_CLASS (ev_sidebar_thumbnails_parent_class)->dispose (object);
122 ev_sidebar_thumbnails_get_property (GObject *object,
127 EvSidebarThumbnails *sidebar = EV_SIDEBAR_THUMBNAILS (object);
131 if (sidebar->priv->tree_view)
132 g_value_set_object (value, sidebar->priv->tree_view);
134 g_value_set_object (value, sidebar->priv->icon_view);
137 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
143 ev_sidebar_thumbnails_map (GtkWidget *widget)
145 EvSidebarThumbnails *sidebar;
147 sidebar = EV_SIDEBAR_THUMBNAILS (widget);
149 GTK_WIDGET_CLASS (ev_sidebar_thumbnails_parent_class)->map (widget);
151 adjustment_changed_cb (sidebar);
155 ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class)
157 GObjectClass *g_object_class;
158 GtkObjectClass *gtk_object_class;
159 GtkWidgetClass *widget_class;
161 g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class);
162 gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_thumbnails_class);
163 widget_class = GTK_WIDGET_CLASS (ev_sidebar_thumbnails_class);
165 g_object_class->dispose = ev_sidebar_thumbnails_dispose;
166 g_object_class->get_property = ev_sidebar_thumbnails_get_property;
167 widget_class->map = ev_sidebar_thumbnails_map;
169 g_object_class_override_property (g_object_class,
173 g_type_class_add_private (g_object_class, sizeof (EvSidebarThumbnailsPrivate));
177 ev_sidebar_thumbnails_new (void)
179 GtkWidget *ev_sidebar_thumbnails;
181 ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
183 return ev_sidebar_thumbnails;
187 ev_sidebar_thumbnails_get_loading_icon (EvSidebarThumbnails *sidebar_thumbnails,
194 key = g_strdup_printf ("%dx%d", width, height);
195 icon = g_hash_table_lookup (sidebar_thumbnails->priv->loading_icons, key);
197 icon = ev_document_misc_get_thumbnail_frame (width, height, NULL);
198 g_hash_table_insert (sidebar_thumbnails->priv->loading_icons,
208 clear_range (EvSidebarThumbnails *sidebar_thumbnails,
212 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
216 gint prev_width = -1;
217 gint prev_height = -1;
219 g_assert (start_page <= end_page);
221 path = gtk_tree_path_new_from_indices (start_page, -1);
222 for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
223 result && start_page <= end_page;
224 result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), start_page ++) {
226 GdkPixbuf *loading_icon = NULL;
229 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store),
235 g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, sidebar_thumbnails);
236 ev_job_cancel (EV_JOB (job));
237 g_object_unref (job);
240 ev_page_cache_get_thumbnail_size (priv->page_cache, start_page,
243 if (!loading_icon || (width != prev_width && height != prev_height)) {
245 ev_sidebar_thumbnails_get_loading_icon (sidebar_thumbnails,
250 prev_height = height;
252 gtk_list_store_set (priv->list_store, &iter,
254 COLUMN_THUMBNAIL_SET, FALSE,
255 COLUMN_PIXBUF, loading_icon,
258 gtk_tree_path_free (path);
262 get_scale_for_page (EvSidebarThumbnails *sidebar_thumbnails,
265 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
268 ev_page_cache_get_size (priv->page_cache,
270 1.0, &width, &height);
272 return (gdouble)THUMBNAIL_WIDTH / (gdouble)width;
276 add_range (EvSidebarThumbnails *sidebar_thumbnails,
280 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
284 gint page = start_page;
286 g_assert (start_page <= end_page);
288 path = gtk_tree_path_new_from_indices (start_page, -1);
289 for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
290 result && page <= end_page;
291 result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), page ++) {
293 gboolean thumbnail_set;
295 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), &iter,
297 COLUMN_THUMBNAIL_SET, &thumbnail_set,
300 if (job == NULL && !thumbnail_set) {
301 job = ev_job_thumbnail_new (priv->document,
302 page, priv->rotation,
303 get_scale_for_page (sidebar_thumbnails, page));
304 ev_job_scheduler_push_job (EV_JOB (job), EV_JOB_PRIORITY_HIGH);
306 g_object_set_data_full (G_OBJECT (job), "tree_iter",
307 gtk_tree_iter_copy (&iter),
308 (GDestroyNotify) gtk_tree_iter_free);
309 g_signal_connect (job, "finished",
310 G_CALLBACK (thumbnail_job_completed_callback),
312 gtk_list_store_set (priv->list_store, &iter,
316 /* The queue and the list own a ref to the job now */
317 g_object_unref (job);
319 g_object_unref (job);
322 gtk_tree_path_free (path);
325 /* This modifies start */
327 update_visible_range (EvSidebarThumbnails *sidebar_thumbnails,
331 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
332 int old_start_page, old_end_page;
334 old_start_page = priv->start_page;
335 old_end_page = priv->end_page;
337 if (start_page == old_start_page &&
338 end_page == old_end_page)
341 /* Clear the areas we no longer display */
342 if (old_start_page >= 0 && old_start_page < start_page)
343 clear_range (sidebar_thumbnails, old_start_page, MIN (start_page - 1, old_end_page));
345 if (old_end_page > 0 && old_end_page > end_page)
346 clear_range (sidebar_thumbnails, MAX (end_page + 1, old_start_page), old_end_page);
348 add_range (sidebar_thumbnails, start_page, end_page);
350 priv->start_page = start_page;
351 priv->end_page = end_page;
355 adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails)
357 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
358 GtkTreePath *path = NULL;
359 GtkTreePath *path2 = NULL;
363 /* Widget is not currently visible */
364 if (!GTK_WIDGET_MAPPED (sidebar_thumbnails))
367 if (priv->vadjustment->page_size == 0)
370 if (priv->tree_view) {
371 if (! GTK_WIDGET_REALIZED (priv->tree_view))
374 gtk_tree_view_convert_tree_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view),
375 0, (int) priv->vadjustment->value,
377 gtk_tree_view_convert_tree_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view),
378 0, (int) (priv->vadjustment->value + priv->vadjustment->page_size),
380 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
383 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
386 } else if (priv->icon_view) {
387 if (! GTK_WIDGET_REALIZED (priv->icon_view))
389 if (! gtk_icon_view_get_visible_range (GTK_ICON_VIEW (priv->icon_view), &path, &path2))
396 update_visible_range (sidebar_thumbnails,
397 gtk_tree_path_get_indices (path)[0],
398 gtk_tree_path_get_indices (path2)[0]);
401 gtk_tree_path_free (path);
402 gtk_tree_path_free (path2);
406 ev_sidebar_thumbnails_fill_model (EvSidebarThumbnails *sidebar_thumbnails)
408 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
411 gint prev_width = -1;
412 gint prev_height = -1;
414 for (i = 0; i < sidebar_thumbnails->priv->n_pages; i++) {
417 GdkPixbuf *loading_icon = NULL;
420 page_label = ev_page_cache_get_page_label (priv->page_cache, i);
421 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
422 ev_page_cache_get_thumbnail_size (sidebar_thumbnails->priv->page_cache, i,
423 sidebar_thumbnails->priv->rotation,
425 if (!loading_icon || (width != prev_width && height != prev_height)) {
427 ev_sidebar_thumbnails_get_loading_icon (sidebar_thumbnails,
432 prev_height = height;
434 gtk_list_store_append (priv->list_store, &iter);
435 gtk_list_store_set (priv->list_store, &iter,
436 COLUMN_PAGE_STRING, page_string,
437 COLUMN_PIXBUF, loading_icon,
438 COLUMN_THUMBNAIL_SET, FALSE,
441 g_free (page_string);
446 refresh (EvSidebarThumbnails *sidebar_thumbnails)
448 adjustment_changed_cb (sidebar_thumbnails);
453 ev_sidebar_thumbnails_refresh (EvSidebarThumbnails *sidebar_thumbnails,
456 sidebar_thumbnails->priv->rotation = rotation;
457 if (sidebar_thumbnails->priv->loading_icons)
458 g_hash_table_remove_all (sidebar_thumbnails->priv->loading_icons);
460 if (sidebar_thumbnails->priv->document == NULL ||
461 sidebar_thumbnails->priv->n_pages <= 0)
464 ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
465 ev_sidebar_thumbnails_fill_model (sidebar_thumbnails);
467 /* Trigger a redraw */
468 sidebar_thumbnails->priv->start_page = -1;
469 sidebar_thumbnails->priv->end_page = -1;
470 g_idle_add ((GSourceFunc)refresh, sidebar_thumbnails);
474 ev_sidebar_tree_selection_changed (GtkTreeSelection *selection,
475 EvSidebarThumbnails *ev_sidebar_thumbnails)
477 EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
482 if (!gtk_tree_selection_get_selected (selection, NULL, &iter))
485 path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->list_store),
487 page = gtk_tree_path_get_indices (path)[0];
488 gtk_tree_path_free (path);
490 ev_page_cache_set_current_page_history (priv->page_cache, page);
494 ev_sidebar_icon_selection_changed (GtkIconView *icon_view,
495 EvSidebarThumbnails *ev_sidebar_thumbnails)
497 EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
502 selected = gtk_icon_view_get_selected_items (icon_view);
503 if (selected == NULL)
506 /* We don't handle or expect multiple selection. */
507 g_assert (selected->next == NULL);
509 path = selected->data;
510 page = gtk_tree_path_get_indices (path)[0];
512 gtk_tree_path_free (path);
513 g_list_free (selected);
515 ev_page_cache_set_current_page_history (priv->page_cache, page);
519 ev_sidebar_init_tree_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
521 EvSidebarThumbnailsPrivate *priv;
522 GtkTreeSelection *selection;
523 GtkCellRenderer *renderer;
525 priv = ev_sidebar_thumbnails->priv;
526 priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
528 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
529 g_signal_connect (selection, "changed",
530 G_CALLBACK (ev_sidebar_tree_selection_changed), ev_sidebar_thumbnails);
531 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
532 renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
536 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
540 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
541 NULL, gtk_cell_renderer_text_new (),
543 gtk_container_add (GTK_CONTAINER (priv->swindow), priv->tree_view);
544 gtk_widget_show (priv->tree_view);
548 ev_sidebar_init_icon_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
550 EvSidebarThumbnailsPrivate *priv;
552 priv = ev_sidebar_thumbnails->priv;
554 priv->icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
555 gtk_icon_view_set_markup_column (GTK_ICON_VIEW (priv->icon_view), 0);
556 gtk_icon_view_set_pixbuf_column (GTK_ICON_VIEW (priv->icon_view), 1);
557 g_signal_connect (priv->icon_view, "selection-changed",
558 G_CALLBACK (ev_sidebar_icon_selection_changed), ev_sidebar_thumbnails);
560 gtk_container_add (GTK_CONTAINER (priv->swindow), priv->icon_view);
561 gtk_widget_show (priv->icon_view);
565 ev_sidebar_thumbnails_use_icon_view (EvSidebarThumbnails *sidebar_thumbnails)
567 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
568 if (ev_page_cache_get_n_pages (priv->page_cache) > MAX_ICON_VIEW_PAGE_COUNT)
574 ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails)
576 EvSidebarThumbnailsPrivate *priv;
578 priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
580 priv->list_store = gtk_list_store_new (NUM_COLUMNS,
584 EV_TYPE_JOB_THUMBNAIL);
586 priv->swindow = gtk_scrolled_window_new (NULL, NULL);
588 /* We actually don't want GTK_POLICY_AUTOMATIC for horizontal scrollbar here
589 * it's just a workaround for bug #449462
591 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->swindow),
592 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
593 gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->swindow),
595 priv->vadjustment = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->swindow));
596 g_signal_connect_data (priv->vadjustment, "value-changed",
597 G_CALLBACK (adjustment_changed_cb),
598 ev_sidebar_thumbnails, NULL,
599 G_CONNECT_SWAPPED | G_CONNECT_AFTER);
600 g_signal_connect_swapped (priv->swindow, "size-allocate",
601 G_CALLBACK (adjustment_changed_cb),
602 ev_sidebar_thumbnails);
603 gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), priv->swindow, TRUE, TRUE, 0);
605 /* Put it all together */
606 gtk_widget_show_all (priv->swindow);
610 page_changed_cb (EvPageCache *page_cache,
612 EvSidebarThumbnails *sidebar)
614 GtkTreeView *tree_view;
617 path = gtk_tree_path_new_from_indices (page, -1);
619 if (sidebar->priv->tree_view) {
620 tree_view = GTK_TREE_VIEW (sidebar->priv->tree_view);
621 gtk_tree_view_set_cursor (tree_view, path, NULL, FALSE);
622 gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
623 } else if (sidebar->priv->icon_view) {
625 g_signal_handlers_block_by_func
626 (sidebar->priv->icon_view,
627 G_CALLBACK (ev_sidebar_icon_selection_changed), sidebar);
629 gtk_icon_view_select_path (GTK_ICON_VIEW (sidebar->priv->icon_view), path);
631 g_signal_handlers_unblock_by_func
632 (sidebar->priv->icon_view,
633 G_CALLBACK (ev_sidebar_icon_selection_changed), sidebar);
635 gtk_icon_view_set_cursor (GTK_ICON_VIEW (sidebar->priv->icon_view), path, NULL, FALSE);
638 gtk_tree_path_free (path);
642 thumbnail_job_completed_callback (EvJobThumbnail *job,
643 EvSidebarThumbnails *sidebar_thumbnails)
645 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
648 iter = (GtkTreeIter *) g_object_get_data (G_OBJECT (job), "tree_iter");
649 gtk_list_store_set (priv->list_store,
651 COLUMN_PIXBUF, job->thumbnail,
652 COLUMN_THUMBNAIL_SET, TRUE,
658 ev_sidebar_thumbnails_set_document (EvSidebarPage *sidebar_page,
659 EvDocument *document)
661 EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (sidebar_page);
663 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
665 priv->page_cache = ev_page_cache_get (document);
667 if (!EV_IS_DOCUMENT_THUMBNAILS (document) ||
668 ev_page_cache_get_n_pages (priv->page_cache) <= 0 ||
669 ev_page_cache_check_dimensions (priv->page_cache)) {
673 priv->document = document;
674 priv->n_pages = ev_page_cache_get_n_pages (priv->page_cache);
675 priv->loading_icons = g_hash_table_new_full (g_str_hash,
677 (GDestroyNotify)g_free,
678 (GDestroyNotify)g_object_unref);
680 ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
681 ev_sidebar_thumbnails_fill_model (sidebar_thumbnails);
683 /* Create the view widget, and remove the old one, if needed */
684 if (ev_sidebar_thumbnails_use_icon_view (sidebar_thumbnails)) {
685 if (priv->tree_view) {
686 gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->tree_view);
687 priv->tree_view = NULL;
690 if (! priv->icon_view) {
691 ev_sidebar_init_icon_view (sidebar_thumbnails);
692 g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
694 gtk_widget_queue_resize (priv->icon_view);
697 if (priv->icon_view) {
698 gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->icon_view);
699 priv->icon_view = NULL;
702 if (! priv->tree_view) {
703 ev_sidebar_init_tree_view (sidebar_thumbnails);
704 g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
708 /* Connect to the signal and trigger a fake callback */
709 g_signal_connect (priv->page_cache, "page-changed", G_CALLBACK (page_changed_cb), sidebar_thumbnails);
710 sidebar_thumbnails->priv->start_page = -1;
711 sidebar_thumbnails->priv->end_page = -1;
712 page_changed_cb (priv->page_cache,
713 ev_page_cache_get_current_page (priv->page_cache),
715 adjustment_changed_cb (sidebar_thumbnails);
719 ev_sidebar_thumbnails_clear_job (GtkTreeModel *model,
726 gtk_tree_model_get (model, iter, COLUMN_JOB, &job, -1);
730 g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, data);
731 g_object_unref (job);
738 ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar_thumbnails)
740 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
742 gtk_tree_model_foreach (GTK_TREE_MODEL (priv->list_store), ev_sidebar_thumbnails_clear_job, sidebar_thumbnails);
743 gtk_list_store_clear (priv->list_store);
747 ev_sidebar_thumbnails_support_document (EvSidebarPage *sidebar_page,
748 EvDocument *document)
750 return (EV_IS_DOCUMENT_THUMBNAILS (document));
754 ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page)
756 return _("Thumbnails");
760 ev_sidebar_thumbnails_page_iface_init (EvSidebarPageIface *iface)
762 iface->support_document = ev_sidebar_thumbnails_support_document;
763 iface->set_document = ev_sidebar_thumbnails_set_document;
764 iface->get_label = ev_sidebar_thumbnails_get_label;