1 /* this file is part of atril, a mate 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 * Atril 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 * Atril 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 */
24
25 #ifdef HAVE_CONFIG_H
26 #include "config.h"
27 #endif
28
29 #include <string.h>
30
31 #include <glib/gi18n.h>
32 #include <gtk/gtk.h>
33
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"
39 #include "ev-utils.h"
40 #include "ev-window.h"
41
42 #define THUMBNAIL_WIDTH 100
43
44 /* The IconView doesn't scale nearly as well as the TreeView, so we arbitrarily
45 * limit its use */
46 #define MAX_ICON_VIEW_PAGE_COUNT 1500
47
48 typedef struct _EvThumbsSize
49 {
50 gint width;
51 gint height;
52 } EvThumbsSize;
53
54 typedef struct _EvThumbsSizeCache {
55 gboolean uniform;
56 gint uniform_width;
57 gint uniform_height;
58 EvThumbsSize *sizes;
59 } EvThumbsSizeCache;
60
61 struct _EvSidebarThumbnailsPrivate {
62 GtkWidget *swindow;
63 GtkWidget *icon_view;
64 GtkWidget *tree_view;
65 GtkAdjustment *vadjustment;
66 GtkListStore *list_store;
67 GHashTable *loading_icons;
68 EvDocument *document;
69 EvDocumentModel *model;
70 EvThumbsSizeCache *size_cache;
71 gint n_pages, pages_done;
72
73 int rotation;
74 gboolean inverted_colors;
75
76 /* Visible pages */
77 gint start_page, end_page;
78 };
79
80 enum {
81 COLUMN_PAGE_STRING,
82 COLUMN_PIXBUF,
83 COLUMN_THUMBNAIL_SET,
84 COLUMN_JOB,
85 NUM_COLUMNS
86 };
87
88 enum {
89 PROP_0,
90 PROP_WIDGET,
91 };
92
93 static void ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar);
94 static gboolean ev_sidebar_thumbnails_support_document (EvSidebarPage *sidebar_page,
95 EvDocument *document);
96 static void ev_sidebar_thumbnails_page_iface_init (EvSidebarPageInterface *iface);
97 static const gchar* ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page);
98 static void thumbnail_job_completed_callback (EvJobThumbnail *job,
99 EvSidebarThumbnails *sidebar_thumbnails);
100 static void adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails);
101
102 G_DEFINE_TYPE_EXTENDED (EvSidebarThumbnails,
103 ev_sidebar_thumbnails,
104 GTK_TYPE_BOX,
105 0,
106 G_ADD_PRIVATE (EvSidebarThumbnails)
107 G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
108 ev_sidebar_thumbnails_page_iface_init))
109
110 /* Thumbnails dimensions cache */
111 #define EV_THUMBNAILS_SIZE_CACHE_KEY "ev-thumbnails-size-cache"
112
113 static EvThumbsSizeCache *
ev_thumbnails_size_cache_new(EvDocument * document)114 ev_thumbnails_size_cache_new (EvDocument *document)
115 {
116 EvThumbsSizeCache *cache;
117 EvRenderContext *rc = NULL;
118 gint i, n_pages;
119 EvThumbsSize *thumb_size;
120
121 cache = g_new0 (EvThumbsSizeCache, 1);
122
123 n_pages = ev_document_get_n_pages (document);
124
125 /* Assume all pages are the same size until proven otherwise */
126 cache->uniform = TRUE;
127
128 for (i = 0; i < n_pages; i++) {
129 EvPage *page;
130 gdouble page_width, page_height;
131 gint thumb_width = 0;
132 gint thumb_height = 0;
133
134 page = ev_document_get_page (document, i);
135
136 if (document->iswebdocument == FALSE ) {
137 ev_document_get_page_size (document, i, &page_width, &page_height);
138 }
139 else {
140 /* Hardcoding these values to a large enough dimesnsion so as to achieve max content without loss in visibility*/
141 page_width = 800;
142 page_height = 1080;
143 }
144 if (!rc) {
145 rc = ev_render_context_new (page, 0, (gdouble)THUMBNAIL_WIDTH / page_width);
146 } else {
147 ev_render_context_set_page (rc, page);
148 ev_render_context_set_scale (rc, (gdouble)THUMBNAIL_WIDTH / page_width);
149 }
150
151 ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (document),
152 rc, &thumb_width, &thumb_height);
153
154 if (i == 0) {
155 cache->uniform_width = thumb_width;
156 cache->uniform_height = thumb_height;
157 } else if (cache->uniform &&
158 (cache->uniform_width != thumb_width ||
159 cache->uniform_height != thumb_height)) {
160 /* It's a different thumbnail size. Backfill the array. */
161 int j;
162
163 cache->sizes = g_new0 (EvThumbsSize, n_pages);
164
165 for (j = 0; j < i; j++) {
166 thumb_size = &(cache->sizes[j]);
167 thumb_size->width = cache->uniform_width;
168 thumb_size->height = cache->uniform_height;
169 }
170 cache->uniform = FALSE;
171 }
172
173 if (! cache->uniform) {
174 thumb_size = &(cache->sizes[i]);
175
176 thumb_size->width = thumb_width;
177 thumb_size->height = thumb_height;
178 }
179
180 g_object_unref (page);
181 }
182
183 if (rc) {
184 g_object_unref (rc);
185 }
186
187 return cache;
188 }
189
190 static void
ev_thumbnails_size_cache_get_size(EvThumbsSizeCache * cache,gint page,gint rotation,gint * width,gint * height)191 ev_thumbnails_size_cache_get_size (EvThumbsSizeCache *cache,
192 gint page,
193 gint rotation,
194 gint *width,
195 gint *height)
196 {
197 gint w, h;
198
199 if (cache->uniform) {
200 w = cache->uniform_width;
201 h = cache->uniform_height;
202 } else {
203 EvThumbsSize *thumb_size;
204
205 thumb_size = &(cache->sizes[page]);
206
207 w = thumb_size->width;
208 h = thumb_size->height;
209 }
210
211 if (rotation == 0 || rotation == 180) {
212 if (width) *width = w;
213 if (height) *height = h;
214 } else {
215 if (width) *width = h;
216 if (height) *height = w;
217 }
218 }
219
220 static void
ev_thumbnails_size_cache_free(EvThumbsSizeCache * cache)221 ev_thumbnails_size_cache_free (EvThumbsSizeCache *cache)
222 {
223 if (cache->sizes) {
224 g_free (cache->sizes);
225 cache->sizes = NULL;
226 }
227
228 g_free (cache);
229 }
230
231 static EvThumbsSizeCache *
ev_thumbnails_size_cache_get(EvDocument * document)232 ev_thumbnails_size_cache_get (EvDocument *document)
233 {
234 EvThumbsSizeCache *cache;
235
236 cache = g_object_get_data (G_OBJECT (document), EV_THUMBNAILS_SIZE_CACHE_KEY);
237 if (!cache) {
238 cache = ev_thumbnails_size_cache_new (document);
239 g_object_set_data_full (G_OBJECT (document),
240 EV_THUMBNAILS_SIZE_CACHE_KEY,
241 cache,
242 (GDestroyNotify)ev_thumbnails_size_cache_free);
243 }
244
245 return cache;
246 }
247
248
249 static void
ev_sidebar_thumbnails_dispose(GObject * object)250 ev_sidebar_thumbnails_dispose (GObject *object)
251 {
252 EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object);
253
254 if (sidebar_thumbnails->priv->loading_icons) {
255 g_hash_table_destroy (sidebar_thumbnails->priv->loading_icons);
256 sidebar_thumbnails->priv->loading_icons = NULL;
257 }
258
259 if (sidebar_thumbnails->priv->list_store) {
260 ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
261 g_object_unref (sidebar_thumbnails->priv->list_store);
262 sidebar_thumbnails->priv->list_store = NULL;
263 }
264
265 G_OBJECT_CLASS (ev_sidebar_thumbnails_parent_class)->dispose (object);
266 }
267
268 static void
ev_sidebar_thumbnails_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)269 ev_sidebar_thumbnails_get_property (GObject *object,
270 guint prop_id,
271 GValue *value,
272 GParamSpec *pspec)
273 {
274 EvSidebarThumbnails *sidebar = EV_SIDEBAR_THUMBNAILS (object);
275
276 switch (prop_id) {
277 case PROP_WIDGET:
278 if (sidebar->priv->tree_view)
279 g_value_set_object (value, sidebar->priv->tree_view);
280 else
281 g_value_set_object (value, sidebar->priv->icon_view);
282 break;
283 default:
284 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
285 break;
286 }
287 }
288
289 static void
ev_sidebar_thumbnails_map(GtkWidget * widget)290 ev_sidebar_thumbnails_map (GtkWidget *widget)
291 {
292 EvSidebarThumbnails *sidebar;
293
294 sidebar = EV_SIDEBAR_THUMBNAILS (widget);
295
296 GTK_WIDGET_CLASS (ev_sidebar_thumbnails_parent_class)->map (widget);
297
298 adjustment_changed_cb (sidebar);
299 }
300
301 static void
ev_sidebar_fullscreen_cb(EvSidebarThumbnails * sidebar)302 ev_sidebar_fullscreen_cb (EvSidebarThumbnails *sidebar)
303 {
304 /* After activating or deactivating fullscreen mode, the sidebar
305 * window is automatically moved to its start, while scroll bar
306 * stays in its original position.
307 *
308 * The sidebar window move is unwanted and unsolicited, and it's
309 * most probably caused by GtkIconView or GtkScrolledWindow bug.
310 *
311 * Workaround this by having the sidebar sync its window with the
312 * current scroll position after a fullscreen operation, do that by
313 * just emitting a "value-changed" on the current scroll adjustment.
314 * Fixes https://bugzilla.gnome.org/show_bug.cgi?id=783404 */
315 g_signal_emit_by_name (sidebar->priv->vadjustment, "value-changed");
316 }
317
318 static void
ev_sidebar_thumbnails_class_init(EvSidebarThumbnailsClass * ev_sidebar_thumbnails_class)319 ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class)
320 {
321 GObjectClass *g_object_class;
322 GtkWidgetClass *widget_class;
323
324 g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class);
325 widget_class = GTK_WIDGET_CLASS (ev_sidebar_thumbnails_class);
326
327 g_object_class->dispose = ev_sidebar_thumbnails_dispose;
328 g_object_class->get_property = ev_sidebar_thumbnails_get_property;
329 widget_class->map = ev_sidebar_thumbnails_map;
330
331 g_object_class_override_property (g_object_class,
332 PROP_WIDGET,
333 "main-widget");
334 }
335
336 GtkWidget *
ev_sidebar_thumbnails_new(void)337 ev_sidebar_thumbnails_new (void)
338 {
339 GtkWidget *ev_sidebar_thumbnails;
340
341 ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
342
343 return ev_sidebar_thumbnails;
344 }
345
346 static GdkPixbuf *
ev_sidebar_thumbnails_get_loading_icon(EvSidebarThumbnails * sidebar_thumbnails,gint width,gint height)347 ev_sidebar_thumbnails_get_loading_icon (EvSidebarThumbnails *sidebar_thumbnails,
348 gint width,
349 gint height)
350 {
351 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
352 GdkPixbuf *icon;
353 gchar *key;
354
355 key = g_strdup_printf ("%dx%d", width, height);
356 icon = g_hash_table_lookup (priv->loading_icons, key);
357 if (!icon) {
358 gboolean inverted_colors;
359
360 inverted_colors = ev_document_model_get_inverted_colors (priv->model);
361 icon = ev_document_misc_get_loading_thumbnail (width, height, inverted_colors);
362 g_hash_table_insert (priv->loading_icons, key, icon);
363 } else {
364 g_free (key);
365 }
366
367 return icon;
368 }
369
370 static void
cancel_running_jobs(EvSidebarThumbnails * sidebar_thumbnails,gint start_page,gint end_page)371 cancel_running_jobs (EvSidebarThumbnails *sidebar_thumbnails,
372 gint start_page,
373 gint end_page)
374 {
375 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
376 GtkTreePath *path;
377 GtkTreeIter iter;
378 gboolean result;
379
380 g_assert (start_page <= end_page);
381
382 path = gtk_tree_path_new_from_indices (start_page, -1);
383 for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
384 result && start_page <= end_page;
385 result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), start_page ++) {
386 EvJobThumbnail *job;
387 gboolean thumbnail_set;
388
389 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store),
390 &iter,
391 COLUMN_JOB, &job,
392 COLUMN_THUMBNAIL_SET, &thumbnail_set,
393 -1);
394
395 if (thumbnail_set) {
396 g_assert (job == NULL);
397 continue;
398 }
399
400 if (job) {
401 g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, sidebar_thumbnails);
402 ev_job_cancel (EV_JOB (job));
403 g_object_unref (job);
404 }
405
406 gtk_list_store_set (priv->list_store, &iter,
407 COLUMN_JOB, NULL,
408 COLUMN_THUMBNAIL_SET, FALSE,
409 -1);
410 }
411 gtk_tree_path_free (path);
412 }
413
414 static gdouble
get_scale_for_page(EvSidebarThumbnails * sidebar_thumbnails,gint page)415 get_scale_for_page (EvSidebarThumbnails *sidebar_thumbnails,
416 gint page)
417 {
418 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
419 gdouble width;
420 if (priv->document->iswebdocument == TRUE ) {
421 /* Hardcoded for epub documents*/
422 width = 800;
423 } else {
424 ev_document_get_page_size (priv->document, page, &width, NULL);
425 }
426 return (gdouble)THUMBNAIL_WIDTH / width;
427 }
428
429 static void
add_range(EvSidebarThumbnails * sidebar_thumbnails,gint start_page,gint end_page)430 add_range (EvSidebarThumbnails *sidebar_thumbnails,
431 gint start_page,
432 gint end_page)
433 {
434 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
435 GtkTreePath *path;
436 GtkTreeIter iter;
437 gboolean result;
438 gint page = start_page;
439
440 g_assert (start_page <= end_page);
441
442 path = gtk_tree_path_new_from_indices (start_page, -1);
443 for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
444 result && page <= end_page;
445 result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), page ++) {
446 EvJob *job;
447 gboolean thumbnail_set;
448
449 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), &iter,
450 COLUMN_JOB, &job,
451 COLUMN_THUMBNAIL_SET, &thumbnail_set,
452 -1);
453
454 if (job == NULL && !thumbnail_set) {
455 job = ev_job_thumbnail_new (priv->document,
456 page, priv->rotation,
457 get_scale_for_page (sidebar_thumbnails, page));
458
459 if (priv->document->iswebdocument) {
460 ev_job_set_run_mode(job, EV_JOB_RUN_MAIN_LOOP);
461 }
462
463 g_object_set_data_full (G_OBJECT (job), "tree_iter",
464 gtk_tree_iter_copy (&iter),
465 (GDestroyNotify) gtk_tree_iter_free);
466 g_signal_connect (job, "finished",
467 G_CALLBACK (thumbnail_job_completed_callback),
468 sidebar_thumbnails);
469 gtk_list_store_set (priv->list_store, &iter,
470 COLUMN_JOB, job,
471 -1);
472
473 ev_job_scheduler_push_job (EV_JOB (job), EV_JOB_PRIORITY_HIGH);
474
475 /* The queue and the list own a ref to the job now */
476 g_object_unref (job);
477 } else if (job) {
478 g_object_unref (job);
479 }
480 }
481 gtk_tree_path_free (path);
482 }
483
484 /* This modifies start */
485 static void
update_visible_range(EvSidebarThumbnails * sidebar_thumbnails,gint start_page,gint end_page)486 update_visible_range (EvSidebarThumbnails *sidebar_thumbnails,
487 gint start_page,
488 gint end_page)
489 {
490 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
491 int old_start_page, old_end_page;
492 int n_pages_in_visible_range;
493
494 /* Preload before and after current visible scrolling range, the same amount of
495 * thumbs in it, to help prevent thumbnail creation happening in the user's sight.
496 * https://bugzilla.gnome.org/show_bug.cgi?id=342110#c15 */
497 n_pages_in_visible_range = (end_page - start_page) + 1;
498 start_page = MAX (0, start_page - n_pages_in_visible_range);
499 end_page = MIN (priv->n_pages - 1, end_page + n_pages_in_visible_range);
500
501 old_start_page = priv->start_page;
502 old_end_page = priv->end_page;
503
504 if (start_page == old_start_page &&
505 end_page == old_end_page)
506 return;
507
508 /* Clear the areas we no longer display */
509 if (old_start_page >= 0 && old_start_page < start_page)
510 cancel_running_jobs (sidebar_thumbnails, old_start_page, MIN (start_page - 1, old_end_page));
511
512 if (old_end_page > 0 && old_end_page > end_page)
513 cancel_running_jobs (sidebar_thumbnails, MAX (end_page + 1, old_start_page), old_end_page);
514
515 add_range (sidebar_thumbnails, start_page, end_page);
516
517 priv->start_page = start_page;
518 priv->end_page = end_page;
519 }
520
521 static void
adjustment_changed_cb(EvSidebarThumbnails * sidebar_thumbnails)522 adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails)
523 {
524 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
525 GtkTreePath *path = NULL;
526 GtkTreePath *path2 = NULL;
527 gdouble page_size;
528 gdouble value;
529 gint wy1;
530 gint wy2;
531
532 /* Widget is not currently visible */
533 if (!gtk_widget_get_mapped (GTK_WIDGET (sidebar_thumbnails)))
534 return;
535
536 page_size = gtk_adjustment_get_page_size (priv->vadjustment);
537
538 if (page_size == 0)
539 return;
540
541 value = gtk_adjustment_get_value (priv->vadjustment);
542
543 if (priv->tree_view) {
544 if (! gtk_widget_get_realized (priv->tree_view))
545 return;
546
547 gtk_tree_view_convert_tree_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view),
548 0, (int) value,
549 NULL, &wy1);
550 gtk_tree_view_convert_tree_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view),
551 0, (int) (value + page_size),
552 NULL, &wy2);
553 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
554 1, wy1 + 1, &path,
555 NULL, NULL, NULL);
556 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
557 1, wy2 -1, &path2,
558 NULL, NULL, NULL);
559 } else if (priv->icon_view) {
560 if (! gtk_widget_get_realized (priv->icon_view))
561 return;
562 if (! gtk_icon_view_get_visible_range (GTK_ICON_VIEW (priv->icon_view), &path, &path2))
563 return;
564 } else {
565 return;
566 }
567
568 if (path && path2) {
569 update_visible_range (sidebar_thumbnails,
570 gtk_tree_path_get_indices (path)[0],
571 gtk_tree_path_get_indices (path2)[0]);
572 }
573
574 gtk_tree_path_free (path);
575 gtk_tree_path_free (path2);
576 }
577
578 static void
ev_sidebar_thumbnails_fill_model(EvSidebarThumbnails * sidebar_thumbnails)579 ev_sidebar_thumbnails_fill_model (EvSidebarThumbnails *sidebar_thumbnails)
580 {
581 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
582 GtkTreeIter iter;
583 int i;
584
585 for (i = 0; i < sidebar_thumbnails->priv->n_pages; i++) {
586 gchar *page_label;
587 gchar *page_string;
588 GdkPixbuf *loading_icon = NULL;
589 gint width, height;
590
591 page_label = ev_document_get_page_label (priv->document, i);
592 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
593 ev_thumbnails_size_cache_get_size (sidebar_thumbnails->priv->size_cache, i,
594 sidebar_thumbnails->priv->rotation,
595 &width, &height);
596
597 loading_icon = ev_sidebar_thumbnails_get_loading_icon (sidebar_thumbnails,
598 width, height);
599
600 gtk_list_store_append (priv->list_store, &iter);
601 gtk_list_store_set (priv->list_store, &iter,
602 COLUMN_PAGE_STRING, page_string,
603 COLUMN_PIXBUF, loading_icon,
604 COLUMN_THUMBNAIL_SET, FALSE,
605 -1);
606 g_free (page_label);
607 g_free (page_string);
608 }
609 }
610
611 static void
ev_sidebar_tree_selection_changed(GtkTreeSelection * selection,EvSidebarThumbnails * ev_sidebar_thumbnails)612 ev_sidebar_tree_selection_changed (GtkTreeSelection *selection,
613 EvSidebarThumbnails *ev_sidebar_thumbnails)
614 {
615 EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
616 GtkTreePath *path;
617 GtkTreeIter iter;
618 int page;
619
620 if (!gtk_tree_selection_get_selected (selection, NULL, &iter))
621 return;
622
623 path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->list_store),
624 &iter);
625 page = gtk_tree_path_get_indices (path)[0];
626 gtk_tree_path_free (path);
627
628 ev_document_model_set_page (priv->model, page);
629 }
630
631 static void
ev_sidebar_icon_selection_changed(GtkIconView * icon_view,EvSidebarThumbnails * ev_sidebar_thumbnails)632 ev_sidebar_icon_selection_changed (GtkIconView *icon_view,
633 EvSidebarThumbnails *ev_sidebar_thumbnails)
634 {
635 EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
636 GtkTreePath *path;
637 GList *selected;
638 int page;
639
640 selected = gtk_icon_view_get_selected_items (icon_view);
641 if (selected == NULL)
642 return;
643
644 /* We don't handle or expect multiple selection. */
645 g_assert (selected->next == NULL);
646
647 path = selected->data;
648 page = gtk_tree_path_get_indices (path)[0];
649
650 gtk_tree_path_free (path);
651 g_list_free (selected);
652
653 ev_document_model_set_page (priv->model, page);
654 }
655
656 static void
ev_sidebar_init_tree_view(EvSidebarThumbnails * ev_sidebar_thumbnails)657 ev_sidebar_init_tree_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
658 {
659 EvSidebarThumbnailsPrivate *priv;
660 GtkTreeSelection *selection;
661 GtkCellRenderer *renderer;
662
663 gtk_orientable_set_orientation (GTK_ORIENTABLE (ev_sidebar_thumbnails), GTK_ORIENTATION_VERTICAL);
664
665 priv = ev_sidebar_thumbnails->priv;
666 priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
667
668 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
669 g_signal_connect (selection, "changed",
670 G_CALLBACK (ev_sidebar_tree_selection_changed), ev_sidebar_thumbnails);
671 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
672 renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
673 "xpad", 2,
674 "ypad", 2,
675 NULL);
676 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
677 NULL, renderer,
678 "pixbuf", 1,
679 NULL);
680 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
681 NULL, gtk_cell_renderer_text_new (),
682 "markup", 0, NULL);
683 gtk_container_add (GTK_CONTAINER (priv->swindow), priv->tree_view);
684 gtk_widget_show (priv->tree_view);
685 }
686
687 static void
ev_sidebar_init_icon_view(EvSidebarThumbnails * ev_sidebar_thumbnails)688 ev_sidebar_init_icon_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
689 {
690 EvSidebarThumbnailsPrivate *priv;
691 GtkCellRenderer *renderer;
692
693 priv = ev_sidebar_thumbnails->priv;
694 priv->icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
695
696 renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
697 "xalign", 0.5,
698 "yalign", 1.0,
699 NULL);
700 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (priv->icon_view), renderer, FALSE);
701 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (priv->icon_view),
702 renderer, "pixbuf", 1, NULL);
703
704 renderer = g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
705 "alignment", PANGO_ALIGN_CENTER,
706 "wrap-mode", PANGO_WRAP_WORD_CHAR,
707 "xalign", 0.5,
708 "yalign", 0.0,
709 "width", THUMBNAIL_WIDTH,
710 "wrap-width", THUMBNAIL_WIDTH,
711 NULL);
712 gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (priv->icon_view), renderer, FALSE);
713 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (priv->icon_view),
714 renderer, "markup", 0, NULL);
715
716 g_signal_connect (priv->icon_view, "selection-changed",
717 G_CALLBACK (ev_sidebar_icon_selection_changed), ev_sidebar_thumbnails);
718
719 gtk_container_add (GTK_CONTAINER (priv->swindow), priv->icon_view);
720 gtk_widget_show (priv->icon_view);
721 }
722
723 static gboolean
ev_sidebar_thumbnails_use_icon_view(EvSidebarThumbnails * sidebar_thumbnails)724 ev_sidebar_thumbnails_use_icon_view (EvSidebarThumbnails *sidebar_thumbnails)
725 {
726 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
727
728 return (ev_document_get_n_pages (priv->document) <= MAX_ICON_VIEW_PAGE_COUNT);
729 }
730
731 static void
ev_sidebar_thumbnails_row_changed(GtkTreeModel * model,GtkTreePath * path,GtkTreeIter * iter,gpointer data)732 ev_sidebar_thumbnails_row_changed (GtkTreeModel *model,
733 GtkTreePath *path,
734 GtkTreeIter *iter,
735 gpointer data)
736 {
737 guint signal_id;
738
739 signal_id = GPOINTER_TO_UINT (data);
740
741 /* PREVENT GtkIconView "row-changed" handler to be reached, as it will
742 * perform a full invalidate and relayout of all items, See bug:
743 * https://bugzilla.gnome.org/show_bug.cgi?id=691448#c9 */
744 g_signal_stop_emission (model, signal_id, 0);
745 }
746
747 static void
ev_sidebar_thumbnails_init(EvSidebarThumbnails * ev_sidebar_thumbnails)748 ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails)
749 {
750 EvSidebarThumbnailsPrivate *priv;
751 guint signal_id;
752
753 priv = ev_sidebar_thumbnails->priv = ev_sidebar_thumbnails_get_instance_private (ev_sidebar_thumbnails);
754
755 priv->list_store = gtk_list_store_new (NUM_COLUMNS,
756 G_TYPE_STRING,
757 GDK_TYPE_PIXBUF,
758 G_TYPE_BOOLEAN,
759 EV_TYPE_JOB_THUMBNAIL);
760
761 signal_id = g_signal_lookup ("row-changed", GTK_TYPE_TREE_MODEL);
762 g_signal_connect (GTK_TREE_MODEL (priv->list_store), "row-changed",
763 G_CALLBACK (ev_sidebar_thumbnails_row_changed),
764 GUINT_TO_POINTER (signal_id));
765
766 priv->swindow = gtk_scrolled_window_new (NULL, NULL);
767
768 /* We actually don't want GTK_POLICY_AUTOMATIC for horizontal scrollbar here
769 * it's just a workaround for bug #449462 (GTK2 only)
770 */
771 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->swindow),
772 GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
773 gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->swindow),
774 GTK_SHADOW_IN);
775 priv->vadjustment = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->swindow));
776 g_signal_connect_data (priv->vadjustment, "value-changed",
777 G_CALLBACK (adjustment_changed_cb),
778 ev_sidebar_thumbnails, NULL,
779 G_CONNECT_SWAPPED | G_CONNECT_AFTER);
780 g_signal_connect_swapped (priv->swindow, "size-allocate",
781 G_CALLBACK (adjustment_changed_cb),
782 ev_sidebar_thumbnails);
783 gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), priv->swindow, TRUE, TRUE, 0);
784
785 /* Put it all together */
786 gtk_widget_show_all (priv->swindow);
787 }
788
789 static void
ev_sidebar_thumbnails_set_current_page(EvSidebarThumbnails * sidebar,gint page)790 ev_sidebar_thumbnails_set_current_page (EvSidebarThumbnails *sidebar,
791 gint page)
792 {
793 GtkTreeView *tree_view;
794 GtkTreePath *path;
795
796 path = gtk_tree_path_new_from_indices (page, -1);
797
798 if (sidebar->priv->tree_view) {
799 tree_view = GTK_TREE_VIEW (sidebar->priv->tree_view);
800 gtk_tree_view_set_cursor (tree_view, path, NULL, FALSE);
801 gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
802 } else if (sidebar->priv->icon_view) {
803
804 g_signal_handlers_block_by_func
805 (sidebar->priv->icon_view,
806 G_CALLBACK (ev_sidebar_icon_selection_changed), sidebar);
807
808 gtk_icon_view_select_path (GTK_ICON_VIEW (sidebar->priv->icon_view), path);
809
810 g_signal_handlers_unblock_by_func
811 (sidebar->priv->icon_view,
812 G_CALLBACK (ev_sidebar_icon_selection_changed), sidebar);
813
814 gtk_icon_view_scroll_to_path (GTK_ICON_VIEW (sidebar->priv->icon_view), path, FALSE, 0.0, 0.0);
815 }
816
817 gtk_tree_path_free (path);
818 }
819
820 static void
page_changed_cb(EvSidebarThumbnails * sidebar,gint old_page,gint new_page)821 page_changed_cb (EvSidebarThumbnails *sidebar,
822 gint old_page,
823 gint new_page)
824 {
825 ev_sidebar_thumbnails_set_current_page (sidebar, new_page);
826 }
827
828 static gboolean
refresh(EvSidebarThumbnails * sidebar_thumbnails)829 refresh (EvSidebarThumbnails *sidebar_thumbnails)
830 {
831 adjustment_changed_cb (sidebar_thumbnails);
832 return FALSE;
833 }
834
835 static void
ev_sidebar_thumbnails_reload(EvSidebarThumbnails * sidebar_thumbnails)836 ev_sidebar_thumbnails_reload (EvSidebarThumbnails *sidebar_thumbnails)
837 {
838 EvDocumentModel *model;
839
840 if (sidebar_thumbnails->priv->loading_icons)
841 g_hash_table_remove_all (sidebar_thumbnails->priv->loading_icons);
842
843 if (sidebar_thumbnails->priv->document == NULL ||
844 sidebar_thumbnails->priv->n_pages <= 0)
845 return;
846
847 model = sidebar_thumbnails->priv->model;
848
849 ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
850 ev_sidebar_thumbnails_fill_model (sidebar_thumbnails);
851
852 /* Trigger a redraw */
853 sidebar_thumbnails->priv->start_page = -1;
854 sidebar_thumbnails->priv->end_page = -1;
855 ev_sidebar_thumbnails_set_current_page (sidebar_thumbnails,
856 ev_document_model_get_page (model));
857 g_idle_add ((GSourceFunc)refresh, sidebar_thumbnails);
858 }
859
860 static void
ev_sidebar_thumbnails_rotation_changed_cb(EvDocumentModel * model,GParamSpec * pspec,EvSidebarThumbnails * sidebar_thumbnails)861 ev_sidebar_thumbnails_rotation_changed_cb (EvDocumentModel *model,
862 GParamSpec *pspec,
863 EvSidebarThumbnails *sidebar_thumbnails)
864 {
865 gint rotation = ev_document_model_get_rotation (model);
866
867 sidebar_thumbnails->priv->rotation = rotation;
868 ev_sidebar_thumbnails_reload (sidebar_thumbnails);
869 }
870
871 static void
ev_sidebar_thumbnails_inverted_colors_changed_cb(EvDocumentModel * model,GParamSpec * pspec,EvSidebarThumbnails * sidebar_thumbnails)872 ev_sidebar_thumbnails_inverted_colors_changed_cb (EvDocumentModel *model,
873 GParamSpec *pspec,
874 EvSidebarThumbnails *sidebar_thumbnails)
875 {
876 gboolean inverted_colors = ev_document_model_get_inverted_colors (model);
877
878 sidebar_thumbnails->priv->inverted_colors = inverted_colors;
879 ev_sidebar_thumbnails_reload (sidebar_thumbnails);
880 }
881
882 static void
thumbnail_job_completed_callback(EvJobThumbnail * job,EvSidebarThumbnails * sidebar_thumbnails)883 thumbnail_job_completed_callback (EvJobThumbnail *job,
884 EvSidebarThumbnails *sidebar_thumbnails)
885 {
886 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
887 GtkTreeIter *iter;
888
889 iter = (GtkTreeIter *) g_object_get_data (G_OBJECT (job), "tree_iter");
890 if (priv->inverted_colors && priv->document->iswebdocument == FALSE)
891 ev_document_misc_invert_pixbuf (job->thumbnail);
892 gtk_list_store_set (priv->list_store,
893 iter,
894 COLUMN_PIXBUF, job->thumbnail,
895 COLUMN_THUMBNAIL_SET, TRUE,
896 COLUMN_JOB, NULL,
897 -1);
898
899 gtk_widget_queue_draw (priv->icon_view);
900 }
901
902 static void
ev_sidebar_thumbnails_document_changed_cb(EvDocumentModel * model,GParamSpec * pspec,EvSidebarThumbnails * sidebar_thumbnails)903 ev_sidebar_thumbnails_document_changed_cb (EvDocumentModel *model,
904 GParamSpec *pspec,
905 EvSidebarThumbnails *sidebar_thumbnails)
906 {
907 EvDocument *document = ev_document_model_get_document (model);
908 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
909
910 if (!EV_IS_DOCUMENT_THUMBNAILS (document) ||
911 ev_document_get_n_pages (document) <= 0 ||
912 !ev_document_check_dimensions (document)) {
913 return;
914 }
915
916 priv->size_cache = ev_thumbnails_size_cache_get (document);
917 priv->document = document;
918 priv->n_pages = ev_document_get_n_pages (document);
919 priv->rotation = ev_document_model_get_rotation (model);
920 priv->inverted_colors = ev_document_model_get_inverted_colors (model);
921 priv->loading_icons = g_hash_table_new_full (g_str_hash,
922 g_str_equal,
923 (GDestroyNotify)g_free,
924 (GDestroyNotify)g_object_unref);
925
926 ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
927 ev_sidebar_thumbnails_fill_model (sidebar_thumbnails);
928
929 /* Create the view widget, and remove the old one, if needed */
930 if (ev_sidebar_thumbnails_use_icon_view (sidebar_thumbnails)) {
931 if (priv->tree_view) {
932 gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->tree_view);
933 priv->tree_view = NULL;
934 }
935
936 if (! priv->icon_view) {
937 ev_sidebar_init_icon_view (sidebar_thumbnails);
938 g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
939 } else {
940 gtk_widget_queue_resize (priv->icon_view);
941 }
942 } else {
943 if (priv->icon_view) {
944 gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->icon_view);
945 priv->icon_view = NULL;
946 }
947
948 if (! priv->tree_view) {
949 ev_sidebar_init_tree_view (sidebar_thumbnails);
950 g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
951 }
952 }
953
954 /* Connect to the signal and trigger a fake callback */
955 g_signal_connect_swapped (priv->model, "page-changed",
956 G_CALLBACK (page_changed_cb),
957 sidebar_thumbnails);
958 g_signal_connect (priv->model, "notify::rotation",
959 G_CALLBACK (ev_sidebar_thumbnails_rotation_changed_cb),
960 sidebar_thumbnails);
961 g_signal_connect (priv->model, "notify::inverted-colors",
962 G_CALLBACK (ev_sidebar_thumbnails_inverted_colors_changed_cb),
963 sidebar_thumbnails);
964 g_signal_connect_swapped (priv->model, "notify::fullscreen",
965 G_CALLBACK (ev_sidebar_fullscreen_cb),
966 sidebar_thumbnails);
967 sidebar_thumbnails->priv->start_page = -1;
968 sidebar_thumbnails->priv->end_page = -1;
969 ev_sidebar_thumbnails_set_current_page (sidebar_thumbnails,
970 ev_document_model_get_page (model));
971 adjustment_changed_cb (sidebar_thumbnails);
972 }
973
974 static void
ev_sidebar_thumbnails_set_model(EvSidebarPage * sidebar_page,EvDocumentModel * model)975 ev_sidebar_thumbnails_set_model (EvSidebarPage *sidebar_page,
976 EvDocumentModel *model)
977 {
978 EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (sidebar_page);
979 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
980
981 if (priv->model == model)
982 return;
983
984 priv->model = model;
985 g_signal_connect (model, "notify::document",
986 G_CALLBACK (ev_sidebar_thumbnails_document_changed_cb),
987 sidebar_page);
988 }
989
990 static gboolean
ev_sidebar_thumbnails_clear_job(GtkTreeModel * model,GtkTreePath * path,GtkTreeIter * iter,gpointer data)991 ev_sidebar_thumbnails_clear_job (GtkTreeModel *model,
992 GtkTreePath *path,
993 GtkTreeIter *iter,
994 gpointer data)
995 {
996 EvJob *job;
997
998 gtk_tree_model_get (model, iter, COLUMN_JOB, &job, -1);
999
1000 if (job != NULL) {
1001 ev_job_cancel (job);
1002 g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, data);
1003 g_object_unref (job);
1004 }
1005
1006 return FALSE;
1007 }
1008
1009 static void
ev_sidebar_thumbnails_clear_model(EvSidebarThumbnails * sidebar_thumbnails)1010 ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar_thumbnails)
1011 {
1012 EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
1013
1014 gtk_tree_model_foreach (GTK_TREE_MODEL (priv->list_store), ev_sidebar_thumbnails_clear_job, sidebar_thumbnails);
1015 gtk_list_store_clear (priv->list_store);
1016 }
1017
1018 static gboolean
ev_sidebar_thumbnails_support_document(EvSidebarPage * sidebar_page,EvDocument * document)1019 ev_sidebar_thumbnails_support_document (EvSidebarPage *sidebar_page,
1020 EvDocument *document)
1021 {
1022 return (EV_IS_DOCUMENT_THUMBNAILS (document));
1023 }
1024
1025 static const gchar*
ev_sidebar_thumbnails_get_label(EvSidebarPage * sidebar_page)1026 ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page)
1027 {
1028 return _("Thumbnails");
1029 }
1030
1031 static void
ev_sidebar_thumbnails_page_iface_init(EvSidebarPageInterface * iface)1032 ev_sidebar_thumbnails_page_iface_init (EvSidebarPageInterface *iface)
1033 {
1034 iface->support_document = ev_sidebar_thumbnails_support_document;
1035 iface->set_model = ev_sidebar_thumbnails_set_model;
1036 iface->get_label = ev_sidebar_thumbnails_get_label;
1037 }
1038