shell/ev-sidebar-thumbnails.c

   1 /* this file is part of evince, a gnome document viewer
   2  *
   3  *  Copyright (C) 2004 Red Hat, Inc.
   4  *  Copyright (C) 2004, 2005 Anders Carlsson <andersca@gnome.org>
   5  *
   6  *  Authors:
   7  *    Jonathan Blandford <jrb@alum.mit.edu>
   8  *    Anders Carlsson <andersca@gnome.org>
   9  *
  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.
  14  *
  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.
  19  *
  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.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include <string.h>
  30 #include <gtk/gtk.h>
  31 #include <glib/gi18n.h>
  32
  33 #include "ev-sidebar-page.h"
  34 #include "ev-sidebar-thumbnails.h"
  35 #include "ev-document-thumbnails.h"
  36 #include "ev-document-misc.h"
  37 #include "ev-job-queue.h"
  38 #include "ev-window.h"
  39 #include "ev-utils.h"
  40
  41 #define THUMBNAIL_WIDTH 100
  42
  43 /* The IconView doesn't scale nearly as well as the TreeView, so we arbitrarily
  44  * limit its use */
  45 #define MAX_ICON_VIEW_PAGE_COUNT 1500
  46
  47
  48 struct _EvSidebarThumbnailsPrivate {
  49         GtkWidget *swindow;
  50         GtkWidget *icon_view;
  51         GtkWidget *tree_view;
  52         GtkAdjustment *vadjustment;
  53         GtkListStore *list_store;
  54         GdkPixbuf *loading_icon;
  55         EvDocument *document;
  56
  57         gint n_pages, pages_done;
  58
  59         /* Visible pages */
  60         gint start_page, end_page;
  61 };
  62
  63 enum {
  64         COLUMN_PAGE_STRING,
  65         COLUMN_PIXBUF,
  66         COLUMN_THUMBNAIL_SET,
  67         COLUMN_JOB,
  68         NUM_COLUMNS
  69 };
  70
  71 static void         ev_sidebar_thumbnails_clear_model      (EvSidebarThumbnails *sidebar);
  72 static gboolean     ev_sidebar_thumbnails_support_document (EvSidebarPage       *sidebar_page,
  73                                                             EvDocument          *document);
  74 static void         ev_sidebar_thumbnails_page_iface_init  (EvSidebarPageIface  *iface);
  75 static void         ev_sidebar_thumbnails_set_document     (EvSidebarPage       *sidebar_page,
  76                                                             EvDocument          *document);
  77 static const gchar* ev_sidebar_thumbnails_get_label        (EvSidebarPage       *sidebar_page);
  78 static void         thumbnail_job_completed_callback       (EvJobThumbnail      *job,
  79                                                             EvSidebarThumbnails *sidebar_thumbnails);
  80
  81 G_DEFINE_TYPE_EXTENDED (EvSidebarThumbnails,
  82                         ev_sidebar_thumbnails,
  83                         GTK_TYPE_VBOX,
  84                         0,
  85                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  86                                                ev_sidebar_thumbnails_page_iface_init))
  87
  88 #define EV_SIDEBAR_THUMBNAILS_GET_PRIVATE(object) \
  89         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_THUMBNAILS, EvSidebarThumbnailsPrivate));
  90
  91
  92 static void
  93 ev_sidebar_thumbnails_dispose (GObject *object)
  94 {
  95         EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object);
  96
  97         ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
  98         g_object_unref (sidebar_thumbnails->priv->loading_icon);
  99         g_object_unref (sidebar_thumbnails->priv->list_store);
 100
 101         G_OBJECT_CLASS (ev_sidebar_thumbnails_parent_class)->dispose (object);
 102 }
 103
 104 static void
 105 ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class)
 106 {
 107         GObjectClass *g_object_class;
 108         GtkObjectClass *gtk_object_class;
 109
 110         g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class);
 111         gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_thumbnails_class);
 112
 113         g_object_class->dispose = ev_sidebar_thumbnails_dispose;
 114
 115         g_type_class_add_private (g_object_class, sizeof (EvSidebarThumbnailsPrivate));
 116 }
 117
 118 GtkWidget *
 119 ev_sidebar_thumbnails_new (void)
 120 {
 121         GtkWidget *ev_sidebar_thumbnails;
 122
 123         ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
 124
 125         return ev_sidebar_thumbnails;
 126 }
 127
 128 static void
 129 clear_range (EvSidebarThumbnails *sidebar_thumbnails,
 130              gint                 start_page,
 131              gint                 end_page)
 132 {
 133         EvSidebarThumbnailsPrivate *priv;
 134         GtkTreePath *path;
 135         GtkTreeIter iter;
 136         gboolean result;
 137
 138         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 139
 140         g_assert (start_page <= end_page);
 141
 142         path = gtk_tree_path_new_from_indices (start_page, -1);
 143         for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 144              result && start_page <= end_page;
 145              result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), start_page ++) {
 146                 EvJobThumbnail *job;
 147
 148                 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store),
 149                                     &iter,
 150                                     COLUMN_JOB, &job,
 151                                     -1);
 152
 153                 if (job) {
 154                         g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, sidebar_thumbnails);
 155                         ev_job_queue_remove_job (EV_JOB (job));
 156                         g_object_unref (job);
 157                 }
 158
 159                 gtk_list_store_set (priv->list_store, &iter,
 160                                     COLUMN_JOB, NULL,
 161                                     COLUMN_THUMBNAIL_SET, FALSE,
 162                                     COLUMN_PIXBUF, priv->loading_icon,
 163                                     -1);
 164         }
 165         gtk_tree_path_free (path);
 166 }
 167
 168 static void
 169 add_range (EvSidebarThumbnails *sidebar_thumbnails,
 170            gint                 start_page,
 171            gint                 end_page)
 172 {
 173         EvSidebarThumbnailsPrivate *priv;
 174         GtkTreePath *path;
 175         GtkTreeIter iter;
 176         gboolean result;
 177         gint page = start_page;
 178
 179         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 180
 181         g_assert (start_page <= end_page);
 182
 183         path = gtk_tree_path_new_from_indices (start_page, -1);
 184         for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 185              result && page <= end_page;
 186              result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), page ++) {
 187                 EvJobThumbnail *job;
 188                 gboolean thumbnail_set;
 189
 190                 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), &iter,
 191                                     COLUMN_JOB, &job,
 192                                     COLUMN_THUMBNAIL_SET, &thumbnail_set,
 193                                     -1);
 194
 195                 if (job == NULL && !thumbnail_set) {
 196                         job = (EvJobThumbnail *)ev_job_thumbnail_new (priv->document, page, THUMBNAIL_WIDTH);
 197                         ev_job_queue_add_job (EV_JOB (job), EV_JOB_PRIORITY_HIGH);
 198                         g_object_set_data_full (G_OBJECT (job), "tree_iter",
 199                                                 gtk_tree_iter_copy (&iter),
 200                                                 (GDestroyNotify) gtk_tree_iter_free);
 201                         g_signal_connect (job, "finished",
 202                                           G_CALLBACK (thumbnail_job_completed_callback),
 203                                           sidebar_thumbnails);
 204                         gtk_list_store_set (priv->list_store, &iter,
 205                                             COLUMN_JOB, job,
 206                                             -1);
 207                         /* The queue and the list own a ref to the job now */
 208                         g_object_unref (job);
 209                 } else if (job) {
 210                         g_object_unref (job);
 211                 }
 212         }
 213         gtk_tree_path_free (path);
 214 }
 215
 216 /* This modifies start */
 217 static void
 218 update_visible_range (EvSidebarThumbnails *sidebar_thumbnails,
 219                       gint                 start_page,
 220                       gint                 end_page)
 221 {
 222         EvSidebarThumbnailsPrivate *priv;
 223         int old_start_page, old_end_page;
 224
 225         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 226
 227         old_start_page = priv->start_page;
 228         old_end_page = priv->end_page;
 229
 230         if (start_page == old_start_page &&
 231             end_page == old_end_page)
 232                 return;
 233
 234         /* Clear the areas we no longer display */
 235         if (old_start_page < start_page)
 236                 clear_range (sidebar_thumbnails, old_start_page, MIN (start_page - 1, old_end_page));
 237
 238         if (old_end_page > end_page)
 239                 clear_range (sidebar_thumbnails, MAX (end_page + 1, old_start_page), old_end_page);
 240
 241         add_range (sidebar_thumbnails, start_page, end_page);
 242
 243         priv->start_page = start_page;
 244         priv->end_page = end_page;
 245 }
 246
 247 static void
 248 adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails)
 249 {
 250         EvSidebarThumbnailsPrivate *priv;
 251         GtkTreePath *path = NULL;
 252         GtkTreePath *path2 = NULL;
 253         gint wy1;
 254         gint wy2;
 255
 256         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 257
 258         if (priv->tree_view) {
 259                 if (! GTK_WIDGET_REALIZED (priv->tree_view))
 260                         return;
 261
 262                 gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
 263                                                      0, (int) priv->vadjustment->value,
 264                                                      NULL, &wy1);
 265                 gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
 266                                                      0, (int) (priv->vadjustment->value + priv->vadjustment->page_size),
 267                                                      NULL, &wy2);
 268                 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
 269                                                1, wy1 + 1, &path,
 270                                                NULL, NULL, NULL);
 271                 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
 272                                                1, wy2 -1, &path2,
 273                                                NULL, NULL, NULL);
 274         } else if (priv->icon_view) {
 275 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 276                 if (! GTK_WIDGET_REALIZED (priv->icon_view))
 277                         return;
 278                 gtk_icon_view_get_visible_range (GTK_ICON_VIEW (priv->icon_view), &path, &path2);
 279 #else
 280                 g_assert_not_reached ();
 281 #endif
 282         } else {
 283                 return;
 284         }
 285
 286         if (path == NULL)
 287                 path = gtk_tree_path_new_first ();
 288         if (path2 == NULL)
 289                 path2 = gtk_tree_path_new_from_indices (priv->n_pages,
 290                                                         -1);
 291         update_visible_range (sidebar_thumbnails,
 292                               gtk_tree_path_get_indices (path)[0],
 293                               gtk_tree_path_get_indices (path2)[0]);
 294
 295         gtk_tree_path_free (path);
 296         gtk_tree_path_free (path2);
 297 }
 298
 299 static void
 300 ev_sidebar_tree_selection_changed (GtkTreeSelection *selection,
 301                                    EvSidebarThumbnails *ev_sidebar_thumbnails)
 302 {
 303         EvSidebarThumbnailsPrivate *priv;
 304         EvPageCache *page_cache;
 305         GtkTreePath *path;
 306         GtkTreeIter iter;
 307         int page;
 308
 309         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 310
 311         if (!gtk_tree_selection_get_selected (selection, NULL, &iter))
 312                 return;
 313
 314         path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->list_store),
 315                                         &iter);
 316         page = gtk_tree_path_get_indices (path)[0];
 317         gtk_tree_path_free (path);
 318
 319         page_cache = ev_page_cache_get (priv->document);
 320         ev_page_cache_set_current_page (page_cache, page);
 321 }
 322
 323 static void
 324 ev_sidebar_icon_selection_changed (GtkIconView         *icon_view,
 325                                    EvSidebarThumbnails *ev_sidebar_thumbnails)
 326 {
 327         EvSidebarThumbnailsPrivate *priv;
 328         EvPageCache *page_cache;
 329         GtkTreePath *path;
 330         GList *selected;
 331         int page;
 332
 333         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 334
 335         selected = gtk_icon_view_get_selected_items (icon_view);
 336         if (selected == NULL)
 337                 return;
 338
 339         /* We don't handle or expect multiple selection. */
 340         g_assert (selected->next == NULL);
 341
 342         path = selected->data;
 343         page = gtk_tree_path_get_indices (path)[0];
 344
 345         gtk_tree_path_free (path);
 346         g_list_free (selected);
 347
 348         page_cache = ev_page_cache_get (priv->document);
 349         ev_page_cache_set_current_page (page_cache, page);
 350 }
 351
 352 GtkWidget *
 353 ev_sidebar_thumbnails_get_treeview (EvSidebarThumbnails *sidebar)
 354 {
 355         if (sidebar->priv->tree_view)
 356                 return sidebar->priv->tree_view;
 357         else
 358                 return sidebar->priv->icon_view;
 359 }
 360
 361
 362 static void
 363 ev_sidebar_init_tree_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
 364 {
 365         EvSidebarThumbnailsPrivate *priv;
 366         GtkTreeSelection *selection;
 367         GtkCellRenderer *renderer;
 368
 369         priv = ev_sidebar_thumbnails->priv;
 370         priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 371
 372         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 373         g_signal_connect (selection, "changed",
 374                           G_CALLBACK (ev_sidebar_tree_selection_changed), ev_sidebar_thumbnails);
 375         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 376         renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
 377                                  "xpad", 2,
 378                                  "ypad", 2,
 379                                  NULL);
 380         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 381                                                      NULL, renderer,
 382                                                      "pixbuf", 1,
 383                                                      NULL);
 384         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 385                                                      NULL, gtk_cell_renderer_text_new (),
 386                                                      "markup", 0, NULL);
 387         gtk_container_add (GTK_CONTAINER (priv->swindow), priv->tree_view);
 388         gtk_widget_show (priv->tree_view);
 389 }
 390
 391 static void
 392 ev_sidebar_init_icon_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
 393 {
 394         EvSidebarThumbnailsPrivate *priv;
 395
 396         priv = ev_sidebar_thumbnails->priv;
 397
 398         priv->icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 399         gtk_icon_view_set_markup_column (GTK_ICON_VIEW (priv->icon_view), 0);
 400         gtk_icon_view_set_pixbuf_column (GTK_ICON_VIEW (priv->icon_view), 1);
 401         g_signal_connect (priv->icon_view, "selection-changed",
 402                           G_CALLBACK (ev_sidebar_icon_selection_changed), ev_sidebar_thumbnails);
 403
 404         gtk_container_add (GTK_CONTAINER (priv->swindow), priv->icon_view);
 405         gtk_widget_show (priv->icon_view);
 406 }
 407
 408 static gboolean
 409 ev_sidebar_thumbnails_use_icon_view (EvSidebarThumbnails *sidebar_thumbnails)
 410 {
 411 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 412         EvPageCache *page_cache;
 413
 414         page_cache = ev_page_cache_get (sidebar_thumbnails->priv->document);
 415
 416         if (ev_page_cache_get_n_pages (page_cache) > MAX_ICON_VIEW_PAGE_COUNT)
 417                 return FALSE;
 418         return TRUE;
 419 #else
 420         return FALSE;
 421 #endif
 422 }
 423
 424 static void
 425 ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails)
 426 {
 427         EvSidebarThumbnailsPrivate *priv;
 428
 429         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 430
 431         priv->list_store = gtk_list_store_new (NUM_COLUMNS,
 432                                                G_TYPE_STRING,
 433                                                GDK_TYPE_PIXBUF,
 434                                                G_TYPE_BOOLEAN,
 435                                                EV_TYPE_JOB_THUMBNAIL);
 436
 437         priv->swindow = gtk_scrolled_window_new (NULL, NULL);
 438         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->swindow),
 439                                         GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 440         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->swindow),
 441                                              GTK_SHADOW_IN);
 442         priv->vadjustment = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->swindow));
 443         g_signal_connect_data (G_OBJECT (priv->vadjustment), "value-changed",
 444                                G_CALLBACK (adjustment_changed_cb),
 445                                ev_sidebar_thumbnails, NULL,
 446                                G_CONNECT_SWAPPED | G_CONNECT_AFTER);
 447         g_signal_connect_swapped (G_OBJECT (priv->swindow), "size-allocate",
 448                                   G_CALLBACK (adjustment_changed_cb),
 449                                   ev_sidebar_thumbnails);
 450         gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), priv->swindow, TRUE, TRUE, 0);
 451
 452         /* Put it all together */
 453         gtk_widget_show_all (priv->swindow);
 454 }
 455
 456 static void
 457 page_changed_cb (EvPageCache         *page_cache,
 458                  int                  page,
 459                  EvSidebarThumbnails *sidebar)
 460 {
 461         GtkTreeView *tree_view;
 462         GtkTreePath *path;
 463
 464         path = gtk_tree_path_new_from_indices (page, -1);
 465
 466         if (sidebar->priv->tree_view) {
 467                 tree_view = GTK_TREE_VIEW (sidebar->priv->tree_view);
 468                 gtk_tree_view_set_cursor (tree_view, path, NULL, FALSE);
 469                 gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
 470         } else if (sidebar->priv->icon_view) {
 471                 /* Guard against gtk-2.6 */
 472 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 473                 gtk_icon_view_select_path (GTK_ICON_VIEW (sidebar->priv->icon_view), path);
 474                 gtk_icon_view_set_cursor (GTK_ICON_VIEW (sidebar->priv->icon_view), path, NULL, FALSE);
 475 #endif
 476         }
 477
 478         gtk_tree_path_free (path);
 479 }
 480
 481 static void
 482 thumbnail_job_completed_callback (EvJobThumbnail      *job,
 483                                   EvSidebarThumbnails *sidebar_thumbnails)
 484 {
 485         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 486         GtkTreeIter *iter;
 487
 488         iter = (GtkTreeIter *) g_object_get_data (G_OBJECT (job), "tree_iter");
 489         gtk_list_store_set (priv->list_store,
 490                             iter,
 491                             COLUMN_PIXBUF, job->thumbnail,
 492                             COLUMN_THUMBNAIL_SET, TRUE,
 493                             COLUMN_JOB, NULL,
 494                             -1);
 495 }
 496
 497 static void
 498 ev_sidebar_thumbnails_set_document (EvSidebarPage       *sidebar_page,
 499                                     EvDocument          *document)
 500 {
 501         EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (sidebar_page);
 502         gint i, n_pages;
 503         GtkTreeIter iter;
 504         gint width = THUMBNAIL_WIDTH;
 505         gint height = THUMBNAIL_WIDTH;
 506         EvPageCache *page_cache;
 507
 508         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 509
 510         g_return_if_fail (EV_IS_DOCUMENT_THUMBNAILS (document));
 511
 512         page_cache = ev_page_cache_get (document);
 513         n_pages = ev_page_cache_get_n_pages (page_cache);
 514
 515         priv->document = document;
 516         priv->n_pages = n_pages;
 517
 518         /* We get the dimensions of the first doc so that we can make a blank
 519          * icon.  */
 520         ev_document_doc_mutex_lock ();
 521         ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (priv->document),
 522                                                0, THUMBNAIL_WIDTH, &width, &height);
 523         ev_document_doc_mutex_unlock ();
 524
 525         if (priv->loading_icon)
 526                 g_object_unref (priv->loading_icon);
 527         priv->loading_icon = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 528
 529         ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
 530         for (i = 0; i < n_pages; i++) {
 531                 gchar *page_label;
 532                 gchar *page_string;
 533
 534                 page_label = ev_page_cache_get_page_label (page_cache, i);
 535                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 536
 537                 gtk_list_store_append (priv->list_store, &iter);
 538                 gtk_list_store_set (priv->list_store, &iter,
 539                                     COLUMN_PAGE_STRING, page_string,
 540                                     COLUMN_PIXBUF, priv->loading_icon,
 541                                     COLUMN_THUMBNAIL_SET, FALSE,
 542                                     -1);
 543                 g_free (page_label);
 544                 g_free (page_string);
 545         }
 546
 547
 548         /* Create the view widget, and remove the old one, if needed */
 549         if (ev_sidebar_thumbnails_use_icon_view (sidebar_thumbnails)) {
 550                 if (priv->tree_view) {
 551                         gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->tree_view);
 552                         priv->tree_view = NULL;
 553                 }
 554
 555                 if (! priv->icon_view)
 556                         ev_sidebar_init_icon_view (sidebar_thumbnails);
 557         } else {
 558                 if (priv->icon_view) {
 559                         gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->icon_view);
 560                         priv->icon_view = NULL;
 561                 }
 562
 563                 if (! priv->tree_view)
 564                         ev_sidebar_init_tree_view (sidebar_thumbnails);
 565         }
 566
 567
 568         /* Connect to the signal and trigger a fake callback */
 569         g_signal_connect (page_cache, "page-changed", G_CALLBACK (page_changed_cb), sidebar_thumbnails);
 570         adjustment_changed_cb (sidebar_thumbnails);
 571 }
 572
 573 static gboolean
 574 ev_sidebar_thumbnails_clear_job (GtkTreeModel *model,
 575                                  GtkTreePath *path,
 576                                  GtkTreeIter *iter,
 577                                  gpointer data)
 578 {
 579     EvJob *job;
 580
 581     gtk_tree_model_get (model, iter, COLUMN_JOB, &job, -1);
 582
 583     if (job != NULL) {
 584         ev_job_queue_remove_job (job);
 585         g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, data);
 586         g_object_unref (job);
 587     }
 588
 589     return FALSE;
 590 }
 591
 592 static void
 593 ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar_thumbnails)
 594 {
 595     EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 596
 597     gtk_tree_model_foreach (GTK_TREE_MODEL (priv->list_store), ev_sidebar_thumbnails_clear_job, sidebar_thumbnails);
 598     gtk_list_store_clear (priv->list_store);
 599 }
 600
 601 static gboolean
 602 ev_sidebar_thumbnails_support_document (EvSidebarPage   *sidebar_page,
 603                                         EvDocument *document)
 604 {
 605         return (EV_IS_DOCUMENT_THUMBNAILS (document) &&
 606                     (ev_document_get_n_pages (document) > 1));
 607 }
 608
 609 static const gchar*
 610 ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page)
 611 {
 612     return _("Thumbnails");
 613 }
 614
 615 static void
 616 ev_sidebar_thumbnails_page_iface_init (EvSidebarPageIface *iface)
 617 {
 618         iface->support_document = ev_sidebar_thumbnails_support_document;
 619         iface->set_document = ev_sidebar_thumbnails_set_document;
 620         iface->get_label = ev_sidebar_thumbnails_get_label;
 621 }
 622