1 #include "ev-pixbuf-cache.h"
2 #include "ev-job-queue.h"
3 #include "ev-page-cache.h"
4 #include "ev-selection.h"
5 #include "ev-document-images.h"
8 typedef struct _CacheJobInfo
13 /* Data we get from rendering */
17 GdkRegion *text_mapping;
20 * Selection_points are the coordinates encapsulated in selection.
21 * target_points is the target selection size. */
22 EvRectangle selection_points;
23 EvRectangle target_points;
27 GdkRegion *selection_region;
34 /* We keep a link to our containing view just for style information. */
40 /* preload_cache_size is the number of pages prior to the current
41 * visible area that we cache. It's normally 1, but could be 2 in the
44 int preload_cache_size;
45 CacheJobInfo *prev_job;
46 CacheJobInfo *job_list;
47 CacheJobInfo *next_job;
50 struct _EvPixbufCacheClass
52 GObjectClass parent_class;
54 void (* job_finished) (EvPixbufCache *pixbuf_cache);
64 static guint signals[N_SIGNALS] = {0, };
66 static void ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache);
67 static void ev_pixbuf_cache_class_init (EvPixbufCacheClass *pixbuf_cache);
68 static void ev_pixbuf_cache_finalize (GObject *object);
69 static void ev_pixbuf_cache_dispose (GObject *object);
70 static void job_finished_cb (EvJob *job,
71 EvPixbufCache *pixbuf_cache);
72 static CacheJobInfo *find_job_cache (EvPixbufCache *pixbuf_cache,
74 static void copy_job_to_job_info (EvJobRender *job_render,
75 CacheJobInfo *job_info,
76 EvPixbufCache *pixbuf_cache);
77 static gboolean new_selection_pixbuf_needed(EvPixbufCache *pixbuf_cache,
78 CacheJobInfo *job_info,
83 /* These are used for iterating through the prev and next arrays */
84 #define FIRST_VISABLE_PREV(pixbuf_cache) \
85 (MAX (0, pixbuf_cache->preload_cache_size + 1 - pixbuf_cache->start_page))
86 #define VISIBLE_NEXT_LEN(pixbuf_cache, page_cache) \
87 (MIN(pixbuf_cache->preload_cache_size, ev_page_cache_get_n_pages (page_cache) - (1 + pixbuf_cache->end_page)))
88 #define PAGE_CACHE_LEN(pixbuf_cache) \
89 ((pixbuf_cache->end_page - pixbuf_cache->start_page) + 1)
91 G_DEFINE_TYPE (EvPixbufCache, ev_pixbuf_cache, G_TYPE_OBJECT)
94 ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache)
96 pixbuf_cache->start_page = 0;
97 pixbuf_cache->end_page = 0;
98 pixbuf_cache->job_list = g_new0 (CacheJobInfo, PAGE_CACHE_LEN (pixbuf_cache));
100 pixbuf_cache->preload_cache_size = 2;
101 pixbuf_cache->prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
102 pixbuf_cache->next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
106 ev_pixbuf_cache_class_init (EvPixbufCacheClass *class)
108 GObjectClass *object_class;
110 object_class = G_OBJECT_CLASS (class);
112 object_class->finalize = ev_pixbuf_cache_finalize;
113 object_class->dispose = ev_pixbuf_cache_dispose;
115 signals[JOB_FINISHED] = g_signal_new ("job-finished",
116 G_OBJECT_CLASS_TYPE (object_class),
117 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
118 G_STRUCT_OFFSET (EvPixbufCacheClass, job_finished),
120 g_cclosure_marshal_VOID__VOID,
125 ev_pixbuf_cache_finalize (GObject *object)
127 EvPixbufCache *pixbuf_cache;
129 pixbuf_cache = EV_PIXBUF_CACHE (object);
131 g_free (pixbuf_cache->prev_job);
132 g_free (pixbuf_cache->job_list);
133 g_free (pixbuf_cache->next_job);
135 G_OBJECT_CLASS (ev_pixbuf_cache_parent_class)->finalize (object);
139 dispose_cache_job_info (CacheJobInfo *job_info,
142 if (job_info == NULL)
145 g_signal_handlers_disconnect_by_func (job_info->job,
146 G_CALLBACK (job_finished_cb),
148 ev_job_queue_remove_job (job_info->job);
149 g_object_unref (G_OBJECT (job_info->job));
150 job_info->job = NULL;
152 if (job_info->pixbuf) {
153 g_object_unref (G_OBJECT (job_info->pixbuf));
154 job_info->pixbuf = NULL;
156 if (job_info->link_mapping) {
157 ev_link_mapping_free (job_info->link_mapping);
158 job_info->link_mapping = NULL;
160 if (job_info->image_mapping) {
161 ev_image_mapping_free (job_info->image_mapping);
162 job_info->image_mapping = NULL;
164 if (job_info->text_mapping) {
165 gdk_region_destroy (job_info->text_mapping);
166 job_info->text_mapping = NULL;
168 if (job_info->selection) {
169 g_object_unref (G_OBJECT (job_info->selection));
170 job_info->selection = NULL;
172 if (job_info->selection_region) {
173 gdk_region_destroy (job_info->selection_region);
174 job_info->selection_region = NULL;
177 g_object_unref (G_OBJECT (job_info->rc));
181 job_info->points_set = FALSE;
185 ev_pixbuf_cache_dispose (GObject *object)
187 EvPixbufCache *pixbuf_cache;
190 pixbuf_cache = EV_PIXBUF_CACHE (object);
192 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
193 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
194 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
197 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
198 dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache);
201 G_OBJECT_CLASS (ev_pixbuf_cache_parent_class)->dispose (object);
206 ev_pixbuf_cache_new (GtkWidget *view,
207 EvDocument *document)
209 EvPixbufCache *pixbuf_cache;
211 pixbuf_cache = (EvPixbufCache *) g_object_new (EV_TYPE_PIXBUF_CACHE, NULL);
212 /* This is a backlink, so we don't ref this */
213 pixbuf_cache->view = view;
214 pixbuf_cache->document = document;
220 job_finished_cb (EvJob *job,
221 EvPixbufCache *pixbuf_cache)
223 CacheJobInfo *job_info;
224 EvJobRender *job_render = EV_JOB_RENDER (job);
226 /* If the job is outside of our interest, we silently discard it */
227 if ((job_render->rc->page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size)) ||
228 (job_render->rc->page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))) {
229 g_object_unref (job);
233 job_info = find_job_cache (pixbuf_cache, job_render->rc->page);
235 copy_job_to_job_info (job_render, job_info, pixbuf_cache);
237 g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0);
240 /* This checks a job to see if the job would generate the right sized pixbuf
241 * given a scale. If it won't, it removes the job and clears it to NULL.
244 check_job_size_and_unref (EvPixbufCache *pixbuf_cache,
245 CacheJobInfo *job_info,
246 EvPageCache *page_cache,
254 if (job_info->job == NULL)
257 ev_page_cache_get_size (page_cache,
258 EV_JOB_RENDER (job_info->job)->rc->page,
259 EV_JOB_RENDER (job_info->job)->rc->rotation,
263 if (width == EV_JOB_RENDER (job_info->job)->target_width &&
264 height == EV_JOB_RENDER (job_info->job)->target_height)
267 g_signal_handlers_disconnect_by_func (job_info->job,
268 G_CALLBACK (job_finished_cb),
270 ev_job_queue_remove_job (job_info->job);
271 g_object_unref (job_info->job);
272 job_info->job = NULL;
275 /* Do all function that copies a job from an older cache to it's position in the
276 * new cache. It clears the old job if it doesn't have a place.
279 move_one_job (CacheJobInfo *job_info,
280 EvPixbufCache *pixbuf_cache,
282 CacheJobInfo *new_job_list,
283 CacheJobInfo *new_prev_job,
284 CacheJobInfo *new_next_job,
287 EvJobPriority priority)
289 CacheJobInfo *target_page = NULL;
291 EvJobPriority new_priority;
293 if (page < (start_page - pixbuf_cache->preload_cache_size) ||
294 page > (end_page + pixbuf_cache->preload_cache_size)) {
295 dispose_cache_job_info (job_info, pixbuf_cache);
299 /* find the target page to copy it over to. */
300 if (page < start_page) {
301 page_offset = (page - (start_page - pixbuf_cache->preload_cache_size));
303 g_assert (page_offset >= 0 &&
304 page_offset < pixbuf_cache->preload_cache_size);
305 target_page = new_prev_job + page_offset;
306 new_priority = EV_JOB_PRIORITY_LOW;
307 } else if (page > end_page) {
308 page_offset = (page - (end_page + 1));
310 g_assert (page_offset >= 0 &&
311 page_offset < pixbuf_cache->preload_cache_size);
312 target_page = new_next_job + page_offset;
313 new_priority = EV_JOB_PRIORITY_LOW;
315 page_offset = page - start_page;
316 g_assert (page_offset >= 0 &&
317 page_offset <= ((end_page - start_page) + 1));
318 new_priority = EV_JOB_PRIORITY_HIGH;
319 target_page = new_job_list + page_offset;
322 *target_page = *job_info;
323 job_info->job = NULL;
324 job_info->pixbuf = NULL;
325 job_info->link_mapping = NULL;
326 job_info->image_mapping = NULL;
328 if (new_priority != priority && target_page->job) {
329 ev_job_queue_update_job (target_page->job, new_priority);
336 ev_pixbuf_cache_update_range (EvPixbufCache *pixbuf_cache,
340 CacheJobInfo *new_job_list;
341 CacheJobInfo *new_prev_job;
342 CacheJobInfo *new_next_job;
343 EvPageCache *page_cache;
346 if (pixbuf_cache->start_page == start_page &&
347 pixbuf_cache->end_page == end_page)
350 page_cache = ev_page_cache_get (pixbuf_cache->document);
352 new_job_list = g_new0 (CacheJobInfo, (end_page - start_page) + 1);
353 new_prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
354 new_next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
356 /* We go through each job in the old cache and either clear it or move
357 * it to a new location. */
359 /* Start with the prev cache. */
360 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
361 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
363 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
365 move_one_job (pixbuf_cache->prev_job + i,
367 new_job_list, new_prev_job, new_next_job,
368 start_page, end_page, EV_JOB_PRIORITY_LOW);
373 page = pixbuf_cache->start_page;
374 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
375 move_one_job (pixbuf_cache->job_list + i,
377 new_job_list, new_prev_job, new_next_job,
378 start_page, end_page, EV_JOB_PRIORITY_HIGH);
382 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
383 if (page >= ev_page_cache_get_n_pages (page_cache)) {
384 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
386 move_one_job (pixbuf_cache->next_job + i,
388 new_job_list, new_prev_job, new_next_job,
389 start_page, end_page, EV_JOB_PRIORITY_LOW);
394 g_free (pixbuf_cache->job_list);
395 g_free (pixbuf_cache->prev_job);
396 g_free (pixbuf_cache->next_job);
398 pixbuf_cache->job_list = new_job_list;
399 pixbuf_cache->prev_job = new_prev_job;
400 pixbuf_cache->next_job = new_next_job;
402 pixbuf_cache->start_page = start_page;
403 pixbuf_cache->end_page = end_page;
407 copy_job_to_job_info (EvJobRender *job_render,
408 CacheJobInfo *job_info,
409 EvPixbufCache *pixbuf_cache)
412 job_info->points_set = FALSE;
414 if (job_info->pixbuf) {
415 g_object_unref (G_OBJECT (job_info->pixbuf));
417 job_info->pixbuf = g_object_ref (job_render->pixbuf);
420 g_object_unref (G_OBJECT (job_info->rc));
422 job_info->rc = g_object_ref (job_render->rc);
424 if (job_render->include_links) {
425 if (job_info->link_mapping)
426 ev_link_mapping_free (job_info->link_mapping);
427 job_info->link_mapping = job_render->link_mapping;
430 if (job_render->include_images) {
431 if (job_info->image_mapping)
432 ev_image_mapping_free (job_info->image_mapping);
433 job_info->image_mapping = job_render->image_mapping;
436 if (job_render->include_text) {
437 if (job_info->text_mapping)
438 gdk_region_destroy (job_info->text_mapping);
439 job_info->text_mapping = job_render->text_mapping;
442 if (job_render->include_selection) {
443 if (job_info->selection) {
444 g_object_unref (G_OBJECT (job_info->selection));
445 job_info->selection = NULL;
447 if (job_info->selection_region) {
448 gdk_region_destroy (job_info->selection_region);
449 job_info->selection_region = NULL;
452 job_info->selection_points = job_render->selection_points;
453 job_info->selection_region = gdk_region_copy (job_render->selection_region);
454 job_info->selection = g_object_ref (job_render->selection);
455 g_assert (job_info->selection_points.x1 >= 0);
456 job_info->points_set = TRUE;
460 g_signal_handlers_disconnect_by_func (job_info->job,
461 G_CALLBACK (job_finished_cb),
463 ev_job_queue_remove_job (job_info->job);
464 g_object_unref (G_OBJECT (job_info->job));
465 job_info->job = NULL;
469 static CacheJobInfo *
470 find_job_cache (EvPixbufCache *pixbuf_cache,
475 if (page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size) ||
476 page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))
479 if (page < pixbuf_cache->start_page) {
480 page_offset = (page - (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size));
482 g_assert (page_offset >= 0 &&
483 page_offset < pixbuf_cache->preload_cache_size);
484 return pixbuf_cache->prev_job + page_offset;
487 if (page > pixbuf_cache->end_page) {
488 page_offset = (page - (pixbuf_cache->end_page + 1));
490 g_assert (page_offset >= 0 &&
491 page_offset < pixbuf_cache->preload_cache_size);
492 return pixbuf_cache->next_job + page_offset;
495 page_offset = page - pixbuf_cache->start_page;
496 g_assert (page_offset >= 0 &&
497 page_offset <= PAGE_CACHE_LEN(pixbuf_cache));
498 return pixbuf_cache->job_list + page_offset;
502 ev_pixbuf_cache_clear_job_sizes (EvPixbufCache *pixbuf_cache,
505 EvPageCache *page_cache;
508 page_cache = ev_page_cache_get (pixbuf_cache->document);
510 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
511 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->job_list + i, page_cache, scale);
514 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
515 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->prev_job + i, page_cache, scale);
516 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->next_job + i, page_cache, scale);
520 #define FIRST_VISABLE_PREV(pixbuf_cache) \
521 (MAX (0, pixbuf_cache->preload_cache_size + 1 - pixbuf_cache->start_page))
524 get_selection_colors (GtkWidget *widget, GdkColor **text, GdkColor **base)
526 if (GTK_WIDGET_HAS_FOCUS (widget)) {
527 *text = &widget->style->text [GTK_STATE_SELECTED];
528 *base = &widget->style->base [GTK_STATE_SELECTED];
530 *text = &widget->style->text [GTK_STATE_ACTIVE];
531 *base = &widget->style->base [GTK_STATE_ACTIVE];
536 add_job_if_needed (EvPixbufCache *pixbuf_cache,
537 CacheJobInfo *job_info,
538 EvPageCache *page_cache,
542 EvJobPriority priority)
544 gboolean include_links = FALSE;
545 gboolean include_text = FALSE;
546 gboolean include_selection = FALSE;
547 gboolean include_images = FALSE;
549 GdkColor *text, *base;
554 ev_page_cache_get_size (page_cache, page, rotation,
555 scale, &width, &height);
557 if (job_info->pixbuf &&
558 gdk_pixbuf_get_width (job_info->pixbuf) == width &&
559 gdk_pixbuf_get_height (job_info->pixbuf) == height)
562 /* make a new job now */
563 if (job_info->rc == NULL) {
564 job_info->rc = ev_render_context_new (rotation, page, scale);
566 ev_render_context_set_rotation (job_info->rc, rotation);
567 ev_render_context_set_page (job_info->rc, page);
568 ev_render_context_set_scale (job_info->rc, scale);
571 /* Figure out what else we need for this job */
572 if (job_info->link_mapping == NULL)
573 include_links = TRUE;
574 if (job_info->image_mapping == NULL)
575 include_images = TRUE;
576 if (job_info->text_mapping == NULL)
578 if (new_selection_pixbuf_needed (pixbuf_cache, job_info, page, scale)) {
579 include_selection = TRUE;
582 gtk_widget_ensure_style (pixbuf_cache->view);
584 get_selection_colors (pixbuf_cache->view, &text, &base);
586 job_info->job = ev_job_render_new (pixbuf_cache->document,
589 &(job_info->target_points),
595 ev_job_queue_add_job (job_info->job, priority);
596 g_signal_connect (job_info->job, "finished", G_CALLBACK (job_finished_cb), pixbuf_cache);
601 ev_pixbuf_cache_add_jobs_if_needed (EvPixbufCache *pixbuf_cache,
605 EvPageCache *page_cache;
606 CacheJobInfo *job_info;
610 page_cache = ev_page_cache_get (pixbuf_cache->document);
612 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
613 job_info = (pixbuf_cache->job_list + i);
614 page = pixbuf_cache->start_page + i;
616 add_job_if_needed (pixbuf_cache, job_info,
617 page_cache, page, rotation, scale,
618 EV_JOB_PRIORITY_HIGH);
621 for (i = FIRST_VISABLE_PREV(pixbuf_cache); i < pixbuf_cache->preload_cache_size; i++) {
622 job_info = (pixbuf_cache->prev_job + i);
623 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size + i;
625 add_job_if_needed (pixbuf_cache, job_info,
626 page_cache, page, rotation, scale,
627 EV_JOB_PRIORITY_LOW);
630 for (i = 0; i < VISIBLE_NEXT_LEN(pixbuf_cache, page_cache); i++) {
631 job_info = (pixbuf_cache->next_job + i);
632 page = pixbuf_cache->end_page + 1 + i;
634 add_job_if_needed (pixbuf_cache, job_info,
635 page_cache, page, rotation, scale,
636 EV_JOB_PRIORITY_LOW);
642 ev_pixbuf_cache_set_page_range (EvPixbufCache *pixbuf_cache,
647 GList *selection_list)
649 EvPageCache *page_cache;
651 g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
653 page_cache = ev_page_cache_get (pixbuf_cache->document);
655 g_return_if_fail (start_page >= 0 && start_page < ev_page_cache_get_n_pages (page_cache));
656 g_return_if_fail (end_page >= 0 && end_page < ev_page_cache_get_n_pages (page_cache));
657 g_return_if_fail (end_page >= start_page);
659 /* First, resize the page_range as needed. We cull old pages
661 ev_pixbuf_cache_update_range (pixbuf_cache, start_page, end_page);
663 /* Then, we update the current jobs to see if any of them are the wrong
664 * size, we remove them if we need to. */
665 ev_pixbuf_cache_clear_job_sizes (pixbuf_cache, scale);
667 /* Next, we update the target selection for our pages */
668 ev_pixbuf_cache_set_selection_list (pixbuf_cache, selection_list);
670 /* Finally, we add the new jobs for all the sizes that don't have a
672 ev_pixbuf_cache_add_jobs_if_needed (pixbuf_cache, rotation, scale);
676 ev_pixbuf_cache_get_pixbuf (EvPixbufCache *pixbuf_cache,
679 CacheJobInfo *job_info;
681 job_info = find_job_cache (pixbuf_cache, page);
682 if (job_info == NULL)
685 /* We don't need to wait for the idle to handle the callback */
687 EV_JOB (job_info->job)->finished) {
688 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
691 return job_info->pixbuf;
695 ev_pixbuf_cache_get_link_mapping (EvPixbufCache *pixbuf_cache,
698 CacheJobInfo *job_info;
700 job_info = find_job_cache (pixbuf_cache, page);
701 if (job_info == NULL)
704 /* We don't need to wait for the idle to handle the callback */
706 EV_JOB (job_info->job)->finished) {
707 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
710 return job_info->link_mapping;
714 ev_pixbuf_cache_get_image_mapping (EvPixbufCache *pixbuf_cache,
717 CacheJobInfo *job_info;
719 if (!EV_IS_DOCUMENT_IMAGES (pixbuf_cache->document))
722 job_info = find_job_cache (pixbuf_cache, page);
723 if (job_info == NULL)
726 /* We don't need to wait for the idle to handle the callback */
728 EV_JOB (job_info->job)->finished) {
729 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
732 return job_info->image_mapping;
736 new_selection_pixbuf_needed (EvPixbufCache *pixbuf_cache,
737 CacheJobInfo *job_info,
741 EvPageCache *page_cache;
744 if (job_info->selection) {
745 page_cache = ev_page_cache_get (pixbuf_cache->document);
746 ev_page_cache_get_size (page_cache, page, job_info->rc->rotation,
747 scale, &width, &height);
749 if (width != gdk_pixbuf_get_width (job_info->selection) ||
750 height != gdk_pixbuf_get_height (job_info->selection))
753 if (job_info->points_set)
760 clear_selection_if_needed (EvPixbufCache *pixbuf_cache,
761 CacheJobInfo *job_info,
765 if (new_selection_pixbuf_needed (pixbuf_cache, job_info, page, scale)) {
766 if (job_info->selection)
767 g_object_unref (job_info->selection);
768 job_info->selection = NULL;
769 job_info->selection_points.x1 = -1;
774 ev_pixbuf_cache_get_text_mapping (EvPixbufCache *pixbuf_cache,
777 CacheJobInfo *job_info;
779 job_info = find_job_cache (pixbuf_cache, page);
780 if (job_info == NULL)
783 /* We don't need to wait for the idle to handle the callback */
785 EV_JOB (job_info->job)->finished) {
786 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
789 return job_info->text_mapping;
792 /* Clears the cache of jobs and pixbufs.
795 ev_pixbuf_cache_clear (EvPixbufCache *pixbuf_cache)
799 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
800 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
801 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
804 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
805 dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache);
811 ev_pixbuf_cache_style_changed (EvPixbufCache *pixbuf_cache)
815 /* FIXME: doesn't update running jobs. */
816 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
817 CacheJobInfo *job_info;
819 job_info = pixbuf_cache->prev_job + i;
820 if (job_info->selection) {
821 g_object_unref (G_OBJECT (job_info->selection));
822 job_info->selection = NULL;
825 job_info = pixbuf_cache->next_job + i;
826 if (job_info->selection) {
827 g_object_unref (G_OBJECT (job_info->selection));
828 job_info->selection = NULL;
832 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
833 CacheJobInfo *job_info;
835 job_info = pixbuf_cache->job_list + i;
836 if (job_info->selection) {
837 g_object_unref (G_OBJECT (job_info->selection));
838 job_info->selection = NULL;
844 ev_pixbuf_cache_get_selection_pixbuf (EvPixbufCache *pixbuf_cache,
849 CacheJobInfo *job_info;
851 /* the document does not implement the selection interface */
852 if (!EV_IS_SELECTION (pixbuf_cache->document))
855 job_info = find_job_cache (pixbuf_cache, page);
856 if (job_info == NULL)
859 /* No selection on this page */
860 if (!job_info->points_set)
864 g_assert (job_info->rc);
865 ev_render_context_set_scale (job_info->rc, scale);
867 /* If we have a running job, we just return what we have under the
868 * assumption that it'll be updated later and we can scale it as need
870 if (job_info->job && EV_JOB_RENDER (job_info->job)->include_selection)
871 return job_info->selection;
873 /* Now, lets see if we need to resize the image. If we do, we clear the
875 clear_selection_if_needed (pixbuf_cache, job_info, page, scale);
877 /* Finally, we see if the two scales are the same, and get a new pixbuf
878 * if needed. We do this synchronously for now. At some point, we
879 * _should_ be able to get rid of the doc_mutex, so the synchronicity
880 * doesn't kill us. Rendering a few glyphs should really be fast.
882 if (ev_rect_cmp (&(job_info->target_points), &(job_info->selection_points))) {
883 EvRectangle *old_points;
884 GdkColor *text, *base;
886 /* we need to get a new selection pixbuf */
887 ev_document_doc_mutex_lock ();
888 if (job_info->selection_points.x1 < 0) {
889 g_assert (job_info->selection == NULL);
892 g_assert (job_info->selection != NULL);
893 old_points = &(job_info->selection_points);
896 if (job_info->selection_region)
897 gdk_region_destroy (job_info->selection_region);
898 job_info->selection_region =
899 ev_selection_get_selection_region (EV_SELECTION (pixbuf_cache->document),
901 &(job_info->target_points));
903 gtk_widget_ensure_style (pixbuf_cache->view);
905 get_selection_colors (pixbuf_cache->view, &text, &base);
907 ev_selection_render_selection (EV_SELECTION (pixbuf_cache->document),
908 job_info->rc, &(job_info->selection),
909 &(job_info->target_points),
912 job_info->selection_points = job_info->target_points;
913 ev_document_doc_mutex_unlock ();
916 *region = job_info->selection_region;
917 return job_info->selection;
921 update_job_selection (CacheJobInfo *job_info,
922 EvViewSelection *selection)
924 job_info->points_set = TRUE;
925 job_info->target_points = selection->rect;
929 clear_job_selection (CacheJobInfo *job_info)
931 job_info->points_set = FALSE;
932 job_info->selection_points.x1 = -1;
934 if (job_info->selection) {
935 g_object_unref (job_info->selection);
936 job_info->selection = NULL;
940 /* This function will reset the selection on pages that no longer have them, and
941 * will update the target_selection on those that need it. It will _not_ free
942 * the previous selection_list -- that's up to caller to do.
945 ev_pixbuf_cache_set_selection_list (EvPixbufCache *pixbuf_cache,
946 GList *selection_list)
948 EvPageCache *page_cache;
949 EvViewSelection *selection;
950 GList *list = selection_list;
954 g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
956 if (!EV_IS_SELECTION (pixbuf_cache->document))
959 page_cache = ev_page_cache_get (pixbuf_cache->document);
961 /* We check each area to see what needs updating, and what needs freeing; */
962 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
963 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
971 if (((EvViewSelection *)list->data)->page == page) {
972 selection = list->data;
974 } else if (((EvViewSelection *)list->data)->page > page)
980 update_job_selection (pixbuf_cache->prev_job + i, selection);
982 clear_job_selection (pixbuf_cache->prev_job + i);
986 page = pixbuf_cache->start_page;
987 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
990 if (((EvViewSelection *)list->data)->page == page) {
991 selection = list->data;
993 } else if (((EvViewSelection *)list->data)->page > page)
999 update_job_selection (pixbuf_cache->job_list + i, selection);
1001 clear_job_selection (pixbuf_cache->job_list + i);
1005 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1006 if (page >= ev_page_cache_get_n_pages (page_cache))
1011 if (((EvViewSelection *)list->data)->page == page) {
1012 selection = list->data;
1014 } else if (((EvViewSelection *)list->data)->page > page)
1020 update_job_selection (pixbuf_cache->next_job + i, selection);
1022 clear_job_selection (pixbuf_cache->next_job + i);
1028 /* Returns what the pixbuf cache thinks is */
1031 ev_pixbuf_cache_get_selection_list (EvPixbufCache *pixbuf_cache)
1033 EvPageCache *page_cache;
1034 EvViewSelection *selection;
1035 GList *retval = NULL;
1039 g_return_val_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache), NULL);
1041 page_cache = ev_page_cache_get (pixbuf_cache->document);
1043 /* We check each area to see what needs updating, and what needs freeing; */
1044 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
1045 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1051 if (pixbuf_cache->prev_job[i].selection_points.x1 != -1) {
1052 selection = g_new0 (EvViewSelection, 1);
1053 selection->page = page;
1054 selection->rect = pixbuf_cache->prev_job[i].selection_points;
1055 if (pixbuf_cache->prev_job[i].selection_region)
1056 selection->covered_region = gdk_region_copy (pixbuf_cache->prev_job[i].selection_region);
1057 retval = g_list_append (retval, selection);
1063 page = pixbuf_cache->start_page;
1064 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
1065 if (pixbuf_cache->job_list[i].selection_points.x1 != -1) {
1066 selection = g_new0 (EvViewSelection, 1);
1067 selection->page = page;
1068 selection->rect = pixbuf_cache->job_list[i].selection_points;
1069 if (pixbuf_cache->job_list[i].selection_region)
1070 selection->covered_region = gdk_region_copy (pixbuf_cache->job_list[i].selection_region);
1071 retval = g_list_append (retval, selection);
1077 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1078 if (page >= ev_page_cache_get_n_pages (page_cache))
1081 if (pixbuf_cache->next_job[i].selection_points.x1 != -1) {
1082 selection = g_new0 (EvViewSelection, 1);
1083 selection->page = page;
1084 selection->rect = pixbuf_cache->next_job[i].selection_points;
1085 if (pixbuf_cache->next_job[i].selection_region)
1086 selection->covered_region = gdk_region_copy (pixbuf_cache->next_job[i].selection_region);
1087 retval = g_list_append (retval, selection);