1 #include "ev-pixbuf-cache.h"
2 #include "ev-job-queue.h"
3 #include "ev-page-cache.h"
4 #include "ev-selection.h"
6 typedef struct _CacheJobInfo
12 GdkRegion *text_mapping;
14 /* Selection info. If the *_points structs are unset, we put -1 in x1.
15 * selection_points are the coordinates encapsulated in selection.
16 * new_points is the target selection size. */
17 EvRectangle selection_points;
19 GdkRegion *selection_region;
20 EvRectangle new_points;
27 /* We keep a link to our containing view just for style information. */
33 /* preload_cache_size is the number of pages prior to the current
34 * visible area that we cache. It's normally 1, but could be 2 in the
37 int preload_cache_size;
38 CacheJobInfo *prev_job;
39 CacheJobInfo *job_list;
40 CacheJobInfo *next_job;
43 struct _EvPixbufCacheClass
45 GObjectClass parent_class;
47 void (* job_finished) (EvPixbufCache *pixbuf_cache);
57 static guint signals[N_SIGNALS] = {0, };
59 static void ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache);
60 static void ev_pixbuf_cache_class_init (EvPixbufCacheClass *pixbuf_cache);
61 static void ev_pixbuf_cache_finalize (GObject *object);
62 static void ev_pixbuf_cache_dispose (GObject *object);
63 static void job_finished_cb (EvJob *job,
64 EvPixbufCache *pixbuf_cache);
65 static CacheJobInfo *find_job_cache (EvPixbufCache *pixbuf_cache,
67 static void copy_job_to_job_info (EvJobRender *job_render,
68 CacheJobInfo *job_info,
69 EvPixbufCache *pixbuf_cache);
70 static gboolean new_selection_pixbuf_needed(EvPixbufCache *pixbuf_cache,
71 CacheJobInfo *job_info,
76 /* These are used for iterating through the prev and next arrays */
77 #define FIRST_VISABLE_PREV(pixbuf_cache) \
78 (MAX (0, pixbuf_cache->preload_cache_size + 1 - pixbuf_cache->start_page))
79 #define VISIBLE_NEXT_LEN(pixbuf_cache, page_cache) \
80 (MIN(pixbuf_cache->preload_cache_size, ev_page_cache_get_n_pages (page_cache) - (1 + pixbuf_cache->end_page)))
81 #define PAGE_CACHE_LEN(pixbuf_cache) \
82 ((pixbuf_cache->end_page - pixbuf_cache->start_page) + 1)
84 G_DEFINE_TYPE (EvPixbufCache, ev_pixbuf_cache, G_TYPE_OBJECT)
87 ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache)
89 pixbuf_cache->start_page = 0;
90 pixbuf_cache->end_page = 0;
91 pixbuf_cache->job_list = g_new0 (CacheJobInfo, PAGE_CACHE_LEN (pixbuf_cache));
93 pixbuf_cache->preload_cache_size = 2;
94 pixbuf_cache->prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
95 pixbuf_cache->next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
99 ev_pixbuf_cache_class_init (EvPixbufCacheClass *class)
101 GObjectClass *object_class;
103 object_class = G_OBJECT_CLASS (class);
105 object_class->finalize = ev_pixbuf_cache_finalize;
106 object_class->dispose = ev_pixbuf_cache_dispose;
108 signals[JOB_FINISHED] = g_signal_new ("job-finished",
109 G_OBJECT_CLASS_TYPE (object_class),
110 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
111 G_STRUCT_OFFSET (EvPixbufCacheClass, job_finished),
113 g_cclosure_marshal_VOID__VOID,
118 ev_pixbuf_cache_finalize (GObject *object)
120 EvPixbufCache *pixbuf_cache;
122 pixbuf_cache = EV_PIXBUF_CACHE (object);
124 g_free (pixbuf_cache->prev_job);
125 g_free (pixbuf_cache->job_list);
126 g_free (pixbuf_cache->next_job);
130 dispose_cache_job_info (CacheJobInfo *job_info,
133 if (job_info == NULL)
136 g_signal_handlers_disconnect_by_func (job_info->job,
137 G_CALLBACK (job_finished_cb),
139 ev_job_queue_remove_job (job_info->job);
140 g_object_unref (G_OBJECT (job_info->job));
141 job_info->job = NULL;
143 if (job_info->pixbuf) {
144 g_object_unref (G_OBJECT (job_info->pixbuf));
145 job_info->pixbuf = NULL;
147 if (job_info->link_mapping) {
148 ev_link_mapping_free (job_info->link_mapping);
149 job_info->link_mapping = NULL;
151 if (job_info->text_mapping) {
152 gdk_region_destroy (job_info->text_mapping);
153 job_info->text_mapping = NULL;
155 if (job_info->selection) {
156 g_object_unref (G_OBJECT (job_info->selection));
157 job_info->selection = NULL;
159 if (job_info->selection_region) {
160 gdk_region_destroy (job_info->selection_region);
161 job_info->selection_region = NULL;
164 job_info->selection_points.x1 = -1;
165 job_info->new_points.x1 = -1;
169 ev_pixbuf_cache_dispose (GObject *object)
171 EvPixbufCache *pixbuf_cache;
174 pixbuf_cache = EV_PIXBUF_CACHE (object);
176 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
177 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
178 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
181 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
182 dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache);
188 ev_pixbuf_cache_new (GtkWidget *view,
189 EvDocument *document)
191 EvPixbufCache *pixbuf_cache;
193 pixbuf_cache = (EvPixbufCache *) g_object_new (EV_TYPE_PIXBUF_CACHE, NULL);
194 /* This is a backlink, so we don't ref this */
195 pixbuf_cache->view = view;
196 pixbuf_cache->document = document;
202 job_finished_cb (EvJob *job,
203 EvPixbufCache *pixbuf_cache)
205 CacheJobInfo *job_info;
206 EvJobRender *job_render = EV_JOB_RENDER (job);
209 /* If the job is outside of our interest, we silently discard it */
210 if ((job_render->rc->page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size)) ||
211 (job_render->rc->page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))) {
212 g_object_unref (job);
216 job_info = find_job_cache (pixbuf_cache, job_render->rc->page);
218 pixbuf = g_object_ref (job_render->pixbuf);
219 if (job_info->pixbuf)
220 g_object_unref (job_info->pixbuf);
221 job_info->pixbuf = pixbuf;
223 if (job_render->link_mapping) {
224 if (job_info->link_mapping)
225 ev_link_mapping_free (job_info->link_mapping);
226 job_info->link_mapping = job_render->link_mapping;
229 if (job_render->text_mapping) {
230 if (job_info->text_mapping)
231 gdk_region_destroy (job_info->text_mapping);
232 job_info->text_mapping = job_render->text_mapping;
235 if (job_render->include_selection) {
236 pixbuf = g_object_ref (job_render->selection);
237 if (job_info->selection)
238 g_object_unref (job_info->selection);
239 if (job_info->selection_region)
240 gdk_region_destroy (job_info->selection_region);
241 job_info->selection_points = job_render->selection_points;
242 job_info->selection_region = gdk_region_copy (job_render->selection_region);
243 job_info->selection = pixbuf;
244 g_assert (job_info->selection_points.x1 >= 0);
247 if (job_info->job == job)
248 job_info->job = NULL;
249 g_object_unref (job);
251 g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0);
254 /* This checks a job to see if the job would generate the right sized pixbuf
255 * given a scale. If it won't, it removes the job and clears it to NULL.
258 check_job_size_and_unref (CacheJobInfo *job_info,
259 EvPageCache *page_cache,
267 if (job_info->job == NULL)
270 ev_page_cache_get_size (page_cache,
271 EV_JOB_RENDER (job_info->job)->rc->page,
272 EV_JOB_RENDER (job_info->job)->rc->rotation,
276 if (width == EV_JOB_RENDER (job_info->job)->target_width &&
277 height == EV_JOB_RENDER (job_info->job)->target_height)
280 /* Try to remove the job. If we can't, then the thread has already
281 * picked it up and we are going get a signal when it's done. If we
282 * can, then the job is fully dead and will never rnu.. */
283 if (ev_job_queue_remove_job (job_info->job))
284 g_object_unref (job_info->job);
286 job_info->job = NULL;
289 /* Do all function that copies a job from an older cache to it's position in the
290 * new cache. It clears the old job if it doesn't have a place.
293 move_one_job (CacheJobInfo *job_info,
294 EvPixbufCache *pixbuf_cache,
296 CacheJobInfo *new_job_list,
297 CacheJobInfo *new_prev_job,
298 CacheJobInfo *new_next_job,
301 EvJobPriority priority)
303 CacheJobInfo *target_page = NULL;
305 EvJobPriority new_priority;
307 if (page < (start_page - pixbuf_cache->preload_cache_size) ||
308 page > (end_page + pixbuf_cache->preload_cache_size)) {
309 dispose_cache_job_info (job_info, pixbuf_cache);
313 /* find the target page to copy it over to. */
314 if (page < start_page) {
315 page_offset = (page - (start_page - pixbuf_cache->preload_cache_size));
317 g_assert (page_offset >= 0 &&
318 page_offset < pixbuf_cache->preload_cache_size);
319 target_page = new_prev_job + page_offset;
320 new_priority = EV_JOB_PRIORITY_LOW;
321 } else if (page > end_page) {
322 page_offset = (page - (end_page + 1));
324 g_assert (page_offset >= 0 &&
325 page_offset < pixbuf_cache->preload_cache_size);
326 target_page = new_next_job + page_offset;
327 new_priority = EV_JOB_PRIORITY_LOW;
329 page_offset = page - start_page;
330 g_assert (page_offset >= 0 &&
331 page_offset <= ((end_page - start_page) + 1));
332 new_priority = EV_JOB_PRIORITY_HIGH;
333 target_page = new_job_list + page_offset;
336 *target_page = *job_info;
337 job_info->job = NULL;
338 job_info->pixbuf = NULL;
339 job_info->link_mapping = NULL;
341 if (new_priority != priority && target_page->job) {
342 ev_job_queue_update_job (target_page->job, new_priority);
349 ev_pixbuf_cache_update_range (EvPixbufCache *pixbuf_cache,
353 CacheJobInfo *new_job_list;
354 CacheJobInfo *new_prev_job;
355 CacheJobInfo *new_next_job;
356 EvPageCache *page_cache;
359 if (pixbuf_cache->start_page == start_page &&
360 pixbuf_cache->end_page == end_page)
363 page_cache = ev_page_cache_get (pixbuf_cache->document);
365 new_job_list = g_new0 (CacheJobInfo, (end_page - start_page) + 1);
366 new_prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
367 new_next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
369 /* We go through each job in the old cache and either clear it or move
370 * it to a new location. */
372 /* Start with the prev cache. */
373 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
374 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
376 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
378 move_one_job (pixbuf_cache->prev_job + i,
380 new_job_list, new_prev_job, new_next_job,
381 start_page, end_page, EV_JOB_PRIORITY_LOW);
386 page = pixbuf_cache->start_page;
387 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
388 move_one_job (pixbuf_cache->job_list + i,
390 new_job_list, new_prev_job, new_next_job,
391 start_page, end_page, EV_JOB_PRIORITY_HIGH);
395 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
396 if (page >= ev_page_cache_get_n_pages (page_cache)) {
397 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
399 move_one_job (pixbuf_cache->next_job + i,
401 new_job_list, new_prev_job, new_next_job,
402 start_page, end_page, EV_JOB_PRIORITY_LOW);
407 g_free (pixbuf_cache->job_list);
408 g_free (pixbuf_cache->prev_job);
409 g_free (pixbuf_cache->next_job);
411 pixbuf_cache->job_list = new_job_list;
412 pixbuf_cache->prev_job = new_prev_job;
413 pixbuf_cache->next_job = new_next_job;
415 pixbuf_cache->start_page = start_page;
416 pixbuf_cache->end_page = end_page;
420 copy_job_to_job_info (EvJobRender *job_render,
421 CacheJobInfo *job_info,
422 EvPixbufCache *pixbuf_cache)
426 pixbuf = g_object_ref (job_render->pixbuf);
428 dispose_cache_job_info (job_info, pixbuf_cache);
430 job_info->pixbuf = pixbuf;
431 if (job_render->link_mapping)
432 job_info->link_mapping = job_render->link_mapping;
433 if (job_render->text_mapping)
434 job_info->text_mapping = job_render->text_mapping;
437 static CacheJobInfo *
438 find_job_cache (EvPixbufCache *pixbuf_cache,
443 if (page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size) ||
444 page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))
447 if (page < pixbuf_cache->start_page) {
448 page_offset = (page - (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size));
450 g_assert (page_offset >= 0 &&
451 page_offset < pixbuf_cache->preload_cache_size);
452 return pixbuf_cache->prev_job + page_offset;
455 if (page > pixbuf_cache->end_page) {
456 page_offset = (page - (pixbuf_cache->end_page + 1));
458 g_assert (page_offset >= 0 &&
459 page_offset < pixbuf_cache->preload_cache_size);
460 return pixbuf_cache->next_job + page_offset;
463 page_offset = page - pixbuf_cache->start_page;
464 g_assert (page_offset >= 0 &&
465 page_offset <= PAGE_CACHE_LEN(pixbuf_cache));
466 return pixbuf_cache->job_list + page_offset;
470 ev_pixbuf_cache_clear_job_sizes (EvPixbufCache *pixbuf_cache,
473 EvPageCache *page_cache;
476 page_cache = ev_page_cache_get (pixbuf_cache->document);
478 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
479 check_job_size_and_unref (pixbuf_cache->job_list + i, page_cache, scale);
482 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
483 check_job_size_and_unref (pixbuf_cache->prev_job + i, page_cache, scale);
484 check_job_size_and_unref (pixbuf_cache->next_job + i, page_cache, scale);
488 #define FIRST_VISABLE_PREV(pixbuf_cache) \
489 (MAX (0, pixbuf_cache->preload_cache_size + 1 - pixbuf_cache->start_page))
492 get_selection_colors (GtkWidget *widget, GdkColor **text, GdkColor **base)
494 if (GTK_WIDGET_HAS_FOCUS (widget)) {
495 *text = &widget->style->text [GTK_STATE_SELECTED];
496 *base = &widget->style->base [GTK_STATE_SELECTED];
498 *text = &widget->style->text [GTK_STATE_ACTIVE];
499 *base = &widget->style->base [GTK_STATE_ACTIVE];
504 add_job_if_needed (EvPixbufCache *pixbuf_cache,
505 CacheJobInfo *job_info,
506 EvPageCache *page_cache,
510 EvJobPriority priority)
512 gboolean include_links = FALSE;
513 gboolean include_text = FALSE;
514 gboolean include_selection = FALSE;
516 GdkColor *text, *base;
521 ev_page_cache_get_size (page_cache, page, rotation,
522 scale, &width, &height);
524 if (job_info->pixbuf &&
525 gdk_pixbuf_get_width (job_info->pixbuf) == width &&
526 gdk_pixbuf_get_height (job_info->pixbuf) == height)
529 /* make a new job now */
530 if (job_info->rc == NULL) {
531 job_info->rc = ev_render_context_new (rotation, page, scale);
533 ev_render_context_set_rotation (job_info->rc, rotation);
534 ev_render_context_set_page (job_info->rc, page);
535 ev_render_context_set_scale (job_info->rc, scale);
538 /* Figure out what else we need for this job */
539 if (job_info->link_mapping == NULL)
540 include_links = TRUE;
541 if (job_info->text_mapping == NULL)
543 if (new_selection_pixbuf_needed (pixbuf_cache, job_info, page, scale)) {
544 include_selection = TRUE;
547 gtk_widget_ensure_style (pixbuf_cache->view);
549 get_selection_colors (pixbuf_cache->view, &text, &base);
551 job_info->job = ev_job_render_new (pixbuf_cache->document,
554 &(job_info->new_points),
559 ev_job_queue_add_job (job_info->job, priority);
560 g_signal_connect (job_info->job, "finished", G_CALLBACK (job_finished_cb), pixbuf_cache);
565 ev_pixbuf_cache_add_jobs_if_needed (EvPixbufCache *pixbuf_cache,
569 EvPageCache *page_cache;
570 CacheJobInfo *job_info;
574 page_cache = ev_page_cache_get (pixbuf_cache->document);
576 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
577 job_info = (pixbuf_cache->job_list + i);
578 page = pixbuf_cache->start_page + i;
580 add_job_if_needed (pixbuf_cache, job_info,
581 page_cache, page, rotation, scale,
582 EV_JOB_PRIORITY_HIGH);
585 for (i = FIRST_VISABLE_PREV(pixbuf_cache); i < pixbuf_cache->preload_cache_size; i++) {
586 job_info = (pixbuf_cache->prev_job + i);
587 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size + i;
589 add_job_if_needed (pixbuf_cache, job_info,
590 page_cache, page, rotation, scale,
591 EV_JOB_PRIORITY_LOW);
594 for (i = 0; i < VISIBLE_NEXT_LEN(pixbuf_cache, page_cache); i++) {
595 job_info = (pixbuf_cache->next_job + i);
596 page = pixbuf_cache->end_page + 1 + i;
598 add_job_if_needed (pixbuf_cache, job_info,
599 page_cache, page, rotation, scale,
600 EV_JOB_PRIORITY_LOW);
606 ev_pixbuf_cache_set_page_range (EvPixbufCache *pixbuf_cache,
611 GList *selection_list)
613 EvPageCache *page_cache;
615 g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
617 page_cache = ev_page_cache_get (pixbuf_cache->document);
619 g_return_if_fail (start_page >= 0 && start_page < ev_page_cache_get_n_pages (page_cache));
620 g_return_if_fail (end_page >= 0 && end_page < ev_page_cache_get_n_pages (page_cache));
621 g_return_if_fail (end_page >= start_page);
623 /* First, resize the page_range as needed. We cull old pages
625 ev_pixbuf_cache_update_range (pixbuf_cache, start_page, end_page);
627 /* Then, we update the current jobs to see if any of them are the wrong
628 * size, we remove them if we need to. */
629 ev_pixbuf_cache_clear_job_sizes (pixbuf_cache, scale);
631 /* Next, we update the target selection for our pages */
632 ev_pixbuf_cache_set_selection_list (pixbuf_cache, selection_list);
634 /* Finally, we add the new jobs for all the sizes that don't have a
636 ev_pixbuf_cache_add_jobs_if_needed (pixbuf_cache, rotation, scale);
640 ev_pixbuf_cache_get_pixbuf (EvPixbufCache *pixbuf_cache,
643 CacheJobInfo *job_info;
645 job_info = find_job_cache (pixbuf_cache, page);
646 if (job_info == NULL)
649 /* We don't need to wait for the idle to handle the callback */
651 EV_JOB (job_info->job)->finished) {
652 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
655 return job_info->pixbuf;
659 ev_pixbuf_cache_get_link_mapping (EvPixbufCache *pixbuf_cache,
662 CacheJobInfo *job_info;
664 job_info = find_job_cache (pixbuf_cache, page);
665 if (job_info == NULL)
668 /* We don't need to wait for the idle to handle the callback */
670 EV_JOB (job_info->job)->finished) {
671 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
674 return job_info->link_mapping;
678 new_selection_pixbuf_needed (EvPixbufCache *pixbuf_cache,
679 CacheJobInfo *job_info,
683 EvPageCache *page_cache;
686 if (job_info->selection) {
687 page_cache = ev_page_cache_get (pixbuf_cache->document);
688 ev_page_cache_get_size (page_cache, page, job_info->rc->rotation,
689 scale, &width, &height);
691 if (width != gdk_pixbuf_get_width (job_info->selection) ||
692 height != gdk_pixbuf_get_height (job_info->selection))
695 if (job_info->new_points.x1 >= 0)
702 clear_selection_if_needed (EvPixbufCache *pixbuf_cache,
703 CacheJobInfo *job_info,
707 if (new_selection_pixbuf_needed (pixbuf_cache, job_info, page, scale)) {
708 if (job_info->selection)
709 g_object_unref (job_info->selection);
710 job_info->selection = NULL;
711 job_info->selection_points.x1 = -1;
716 ev_pixbuf_cache_get_text_mapping (EvPixbufCache *pixbuf_cache,
719 CacheJobInfo *job_info;
721 job_info = find_job_cache (pixbuf_cache, page);
722 if (job_info == NULL)
725 /* We don't need to wait for the idle to handle the callback */
727 EV_JOB (job_info->job)->finished) {
728 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
731 return job_info->text_mapping;
734 /* Clears the cache of jobs and pixbufs.
737 ev_pixbuf_cache_clear (EvPixbufCache *pixbuf_cache)
741 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
742 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
743 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
746 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
747 dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache);
753 ev_pixbuf_cache_style_changed (EvPixbufCache *pixbuf_cache)
757 /* FIXME: doesn't update running jobs. */
758 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
759 CacheJobInfo *job_info;
761 job_info = pixbuf_cache->prev_job + i;
762 if (job_info->selection) {
763 g_object_unref (G_OBJECT (job_info->selection));
764 job_info->selection = NULL;
767 job_info = pixbuf_cache->next_job + i;
768 if (job_info->selection) {
769 g_object_unref (G_OBJECT (job_info->selection));
770 job_info->selection = NULL;
774 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
775 CacheJobInfo *job_info;
777 job_info = pixbuf_cache->job_list + i;
778 if (job_info->selection) {
779 g_object_unref (G_OBJECT (job_info->selection));
780 job_info->selection = NULL;
786 ev_pixbuf_cache_get_selection_pixbuf (EvPixbufCache *pixbuf_cache,
791 CacheJobInfo *job_info;
793 /* the document does not implement the selection interface */
794 if (!EV_IS_SELECTION (pixbuf_cache->document))
797 job_info = find_job_cache (pixbuf_cache, page);
798 if (job_info == NULL)
801 /* No selection on this page */
802 if (job_info->new_points.x1 < 0)
806 g_assert (job_info->rc);
807 ev_render_context_set_scale (job_info->rc, scale);
809 /* If we have a running job, we just return what we have under the
810 * assumption that it'll be updated later and we can scale it as need
812 if (job_info->job && EV_JOB_RENDER (job_info->job)->include_selection)
813 return job_info->selection;
815 /* Now, lets see if we need to resize the image. If we do, we clear the
817 clear_selection_if_needed (pixbuf_cache, job_info, page, scale);
819 /* Finally, we see if the two scales are the same, and get a new pixbuf
820 * if needed. We do this synchronously for now. At some point, we
821 * _should_ be able to get rid of the doc_mutex, so the synchronicity
822 * doesn't kill us. Rendering a few glyphs should really be fast.
824 if (ev_rect_cmp (&(job_info->new_points), &(job_info->selection_points))) {
825 EvRectangle *old_points;
826 GdkColor *text, *base;
828 /* we need to get a new selection pixbuf */
829 ev_document_doc_mutex_lock ();
830 if (job_info->selection_points.x1 < 0) {
831 g_assert (job_info->selection == NULL);
834 g_assert (job_info->selection != NULL);
835 old_points = &(job_info->selection_points);
838 if (job_info->selection_region)
839 gdk_region_destroy (job_info->selection_region);
840 job_info->selection_region =
841 ev_selection_get_selection_region (EV_SELECTION (pixbuf_cache->document),
843 &(job_info->new_points));
845 gtk_widget_ensure_style (pixbuf_cache->view);
847 get_selection_colors (pixbuf_cache->view, &text, &base);
849 ev_selection_render_selection (EV_SELECTION (pixbuf_cache->document),
850 job_info->rc, &(job_info->selection),
851 &(job_info->new_points),
854 job_info->selection_points = job_info->new_points;
855 ev_document_doc_mutex_unlock ();
858 *region = job_info->selection_region;
859 return job_info->selection;
863 update_job_selection (CacheJobInfo *job_info,
864 EvViewSelection *selection)
866 if (job_info->selection == NULL)
867 job_info->selection_points.x1 = -1;
868 job_info->new_points = selection->rect;
872 clear_job_selection (CacheJobInfo *job_info)
874 job_info->selection_points.x1 = -1;
875 job_info->new_points.x1 = -1;
877 if (job_info->selection) {
878 g_object_unref (job_info->selection);
879 job_info->selection = NULL;
883 /* This function will reset the selection on pages that no longer have them, and
884 * will update the target_selection on those that need it. It will _not_ free
885 * the previous selection_list -- that's up to caller to do.
888 ev_pixbuf_cache_set_selection_list (EvPixbufCache *pixbuf_cache,
889 GList *selection_list)
891 EvPageCache *page_cache;
892 EvViewSelection *selection;
893 GList *list = selection_list;
897 g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
899 page_cache = ev_page_cache_get (pixbuf_cache->document);
901 /* We check each area to see what needs updating, and what needs freeing; */
902 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
903 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
911 if (((EvViewSelection *)list->data)->page == page) {
912 selection = list->data;
914 } else if (((EvViewSelection *)list->data)->page > page)
920 update_job_selection (pixbuf_cache->prev_job + i, selection);
922 clear_job_selection (pixbuf_cache->prev_job + i);
926 page = pixbuf_cache->start_page;
927 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
930 if (((EvViewSelection *)list->data)->page == page) {
931 selection = list->data;
933 } else if (((EvViewSelection *)list->data)->page > page)
939 update_job_selection (pixbuf_cache->job_list + i, selection);
941 clear_job_selection (pixbuf_cache->job_list + i);
945 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
946 if (page >= ev_page_cache_get_n_pages (page_cache))
951 if (((EvViewSelection *)list->data)->page == page) {
952 selection = list->data;
954 } else if (((EvViewSelection *)list->data)->page > page)
960 update_job_selection (pixbuf_cache->next_job + i, selection);
962 clear_job_selection (pixbuf_cache->next_job + i);
968 /* Returns what the pixbuf cache thinks is */
971 ev_pixbuf_cache_get_selection_list (EvPixbufCache *pixbuf_cache)
973 EvPageCache *page_cache;
974 EvViewSelection *selection;
975 GList *retval = NULL;
979 g_return_val_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache), NULL);
981 page_cache = ev_page_cache_get (pixbuf_cache->document);
983 /* We check each area to see what needs updating, and what needs freeing; */
984 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
985 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
991 if (pixbuf_cache->prev_job[i].selection_points.x1 != -1) {
992 selection = g_new0 (EvViewSelection, 1);
993 selection->page = page;
994 selection->rect = pixbuf_cache->prev_job[i].selection_points;
995 if (pixbuf_cache->prev_job[i].selection_region)
996 selection->covered_region = gdk_region_copy (pixbuf_cache->prev_job[i].selection_region);
997 retval = g_list_append (retval, selection);
1003 page = pixbuf_cache->start_page;
1004 for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
1005 if (pixbuf_cache->job_list[i].selection_points.x1 != -1) {
1006 selection = g_new0 (EvViewSelection, 1);
1007 selection->page = page;
1008 selection->rect = pixbuf_cache->job_list[i].selection_points;
1009 if (pixbuf_cache->job_list[i].selection_region)
1010 selection->covered_region = gdk_region_copy (pixbuf_cache->job_list[i].selection_region);
1011 retval = g_list_append (retval, selection);
1017 for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1018 if (page >= ev_page_cache_get_n_pages (page_cache))
1021 if (pixbuf_cache->next_job[i].selection_points.x1 != -1) {
1022 selection = g_new0 (EvViewSelection, 1);
1023 selection->page = page;
1024 selection->rect = pixbuf_cache->next_job[i].selection_points;
1025 if (pixbuf_cache->next_job[i].selection_region)
1026 selection->covered_region = gdk_region_copy (pixbuf_cache->next_job[i].selection_region);
1027 retval = g_list_append (retval, selection);