libview/ev-pixbuf-cache.c

   1 #include <config.h>
   2 #include "ev-pixbuf-cache.h"
   3 #include "ev-job-scheduler.h"
   4 #include "ev-page-cache.h"
   5 #include "ev-mapping.h"
   6 #include "ev-document-forms.h"
   7 #include "ev-document-images.h"
   8 #include "ev-document-annotations.h"
   9 #include "ev-view-private.h"
  10
  11 typedef struct _CacheJobInfo
  12 {
  13         EvJob *job;
  14         EvRenderContext *rc;
  15         gboolean page_ready;
  16
  17         /* Region of the page that needs to be drawn */
  18         GdkRegion *region;
  19
  20         /* Data we get from rendering */
  21         cairo_surface_t *surface;
  22         GList *link_mapping;
  23         GList *image_mapping;
  24         GList *form_field_mapping;
  25         GList *annots_mapping;
  26         GdkRegion *text_mapping;
  27
  28         /* Selection data.
  29          * Selection_points are the coordinates encapsulated in selection.
  30          * target_points is the target selection size. */
  31         EvRectangle      selection_points;
  32         EvRectangle      target_points;
  33         EvSelectionStyle selection_style;
  34         gboolean         points_set;
  35
  36         cairo_surface_t *selection;
  37         GdkRegion *selection_region;
  38 } CacheJobInfo;
  39
  40 struct _EvPixbufCache
  41 {
  42         GObject parent;
  43
  44         /* We keep a link to our containing view just for style information. */
  45         GtkWidget *view;
  46         EvDocument *document;
  47         int start_page;
  48         int end_page;
  49
  50         /* preload_cache_size is the number of pages prior to the current
  51          * visible area that we cache.  It's normally 1, but could be 2 in the
  52          * case of twin pages.
  53          */
  54         int preload_cache_size;
  55         CacheJobInfo *prev_job;
  56         CacheJobInfo *job_list;
  57         CacheJobInfo *next_job;
  58 };
  59
  60 struct _EvPixbufCacheClass
  61 {
  62         GObjectClass parent_class;
  63
  64         void (* job_finished) (EvPixbufCache *pixbuf_cache);
  65 };
  66
  67
  68 enum
  69 {
  70         JOB_FINISHED,
  71         N_SIGNALS,
  72 };
  73
  74 static guint signals[N_SIGNALS] = {0, };
  75
  76 static void          ev_pixbuf_cache_init       (EvPixbufCache      *pixbuf_cache);
  77 static void          ev_pixbuf_cache_class_init (EvPixbufCacheClass *pixbuf_cache);
  78 static void          ev_pixbuf_cache_finalize   (GObject            *object);
  79 static void          ev_pixbuf_cache_dispose    (GObject            *object);
  80 static void          job_page_ready_cb          (EvJob              *job,
  81                                                  EvPixbufCache      *pixbuf_cache);
  82 static void          job_finished_cb            (EvJob              *job,
  83                                                  EvPixbufCache      *pixbuf_cache);
  84 static CacheJobInfo *find_job_cache             (EvPixbufCache      *pixbuf_cache,
  85                                                  int                 page);
  86 static void          copy_job_to_job_info       (EvJobRender        *job_render,
  87                                                  CacheJobInfo       *job_info,
  88                                                  EvPixbufCache      *pixbuf_cache);
  89 static void          copy_job_page_and_selection_to_job_info (EvJobRender        *job_render,
  90                                                               CacheJobInfo       *job_info,
  91                                                               EvPixbufCache      *pixbuf_cache);
  92 static gboolean      new_selection_surface_needed(EvPixbufCache      *pixbuf_cache,
  93                                                   CacheJobInfo       *job_info,
  94                                                   gint                page,
  95                                                   gfloat              scale);
  96
  97
  98 /* These are used for iterating through the prev and next arrays */
  99 #define FIRST_VISIBLE_PREV(pixbuf_cache) \
 100         (MAX (0, pixbuf_cache->preload_cache_size - pixbuf_cache->start_page))
 101 #define VISIBLE_NEXT_LEN(pixbuf_cache) \
 102         (MIN(pixbuf_cache->preload_cache_size, ev_document_get_n_pages (pixbuf_cache->document) - (1 + pixbuf_cache->end_page)))
 103 #define PAGE_CACHE_LEN(pixbuf_cache) \
 104         ((pixbuf_cache->end_page - pixbuf_cache->start_page) + 1)
 105
 106 G_DEFINE_TYPE (EvPixbufCache, ev_pixbuf_cache, G_TYPE_OBJECT)
 107
 108 static void
 109 ev_pixbuf_cache_init (EvPixbufCache *pixbuf_cache)
 110 {
 111         pixbuf_cache->start_page = 0;
 112         pixbuf_cache->end_page = 0;
 113         pixbuf_cache->job_list = g_new0 (CacheJobInfo, PAGE_CACHE_LEN (pixbuf_cache));
 114
 115         pixbuf_cache->preload_cache_size = 2;
 116         pixbuf_cache->prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
 117         pixbuf_cache->next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
 118 }
 119
 120 static void
 121 ev_pixbuf_cache_class_init (EvPixbufCacheClass *class)
 122 {
 123         GObjectClass *object_class;
 124
 125         object_class = G_OBJECT_CLASS (class);
 126
 127         object_class->finalize = ev_pixbuf_cache_finalize;
 128         object_class->dispose = ev_pixbuf_cache_dispose;
 129
 130         signals[JOB_FINISHED] =
 131                 g_signal_new ("job-finished",
 132                               G_OBJECT_CLASS_TYPE (object_class),
 133                               G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 134                               G_STRUCT_OFFSET (EvPixbufCacheClass, job_finished),
 135                               NULL, NULL,
 136                               g_cclosure_marshal_VOID__POINTER,
 137                               G_TYPE_NONE, 1,
 138                               G_TYPE_POINTER);
 139 }
 140
 141 static void
 142 ev_pixbuf_cache_finalize (GObject *object)
 143 {
 144         EvPixbufCache *pixbuf_cache;
 145
 146         pixbuf_cache = EV_PIXBUF_CACHE (object);
 147
 148         g_free (pixbuf_cache->prev_job);
 149         g_free (pixbuf_cache->job_list);
 150         g_free (pixbuf_cache->next_job);
 151
 152         G_OBJECT_CLASS (ev_pixbuf_cache_parent_class)->finalize (object);
 153 }
 154
 155 static void
 156 dispose_cache_job_info (CacheJobInfo *job_info,
 157                         gpointer      data)
 158 {
 159         if (job_info == NULL)
 160                 return;
 161         if (job_info->job) {
 162                 g_signal_handlers_disconnect_by_func (job_info->job,
 163                                                       G_CALLBACK (job_page_ready_cb),
 164                                                       data);
 165                 g_signal_handlers_disconnect_by_func (job_info->job,
 166                                                       G_CALLBACK (job_finished_cb),
 167                                                       data);
 168                 ev_job_cancel (job_info->job);
 169                 g_object_unref (job_info->job);
 170                 job_info->job = NULL;
 171         }
 172         if (job_info->surface) {
 173                 cairo_surface_destroy (job_info->surface);
 174                 job_info->surface = NULL;
 175         }
 176         if (job_info->region) {
 177                 gdk_region_destroy (job_info->region);
 178                 job_info->region = NULL;
 179         }
 180         if (job_info->link_mapping) {
 181                 ev_mapping_list_free (job_info->link_mapping, g_object_unref);
 182                 job_info->link_mapping = NULL;
 183         }
 184         if (job_info->image_mapping) {
 185                 ev_mapping_list_free (job_info->image_mapping, g_object_unref);
 186                 job_info->image_mapping = NULL;
 187         }
 188         if (job_info->form_field_mapping) {
 189                 ev_mapping_list_free (job_info->form_field_mapping, g_object_unref);
 190                 job_info->form_field_mapping = NULL;
 191         }
 192         if (job_info->annots_mapping) {
 193                 ev_mapping_list_free (job_info->annots_mapping, g_object_unref);
 194                 job_info->annots_mapping = NULL;
 195         }
 196         if (job_info->text_mapping) {
 197                 gdk_region_destroy (job_info->text_mapping);
 198                 job_info->text_mapping = NULL;
 199         }
 200         if (job_info->selection) {
 201                 cairo_surface_destroy (job_info->selection);
 202                 job_info->selection = NULL;
 203         }
 204         if (job_info->selection_region) {
 205                 gdk_region_destroy (job_info->selection_region);
 206                 job_info->selection_region = NULL;
 207         }
 208         if (job_info->rc) {
 209                 g_object_unref (G_OBJECT (job_info->rc));
 210                 job_info->rc = NULL;
 211         }
 212
 213         job_info->points_set = FALSE;
 214 }
 215
 216 static void
 217 ev_pixbuf_cache_dispose (GObject *object)
 218 {
 219         EvPixbufCache *pixbuf_cache;
 220         int i;
 221
 222         pixbuf_cache = EV_PIXBUF_CACHE (object);
 223
 224         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 225                 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
 226                 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
 227         }
 228
 229         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 230                 dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache);
 231         }
 232
 233         G_OBJECT_CLASS (ev_pixbuf_cache_parent_class)->dispose (object);
 234 }
 235
 236
 237 EvPixbufCache *
 238 ev_pixbuf_cache_new (GtkWidget  *view,
 239                      EvDocument *document)
 240 {
 241         EvPixbufCache *pixbuf_cache;
 242
 243         pixbuf_cache = (EvPixbufCache *) g_object_new (EV_TYPE_PIXBUF_CACHE, NULL);
 244         /* This is a backlink, so we don't ref this */
 245         pixbuf_cache->view = view;
 246         pixbuf_cache->document = document;
 247
 248         return pixbuf_cache;
 249 }
 250
 251 static void
 252 job_page_ready_cb (EvJob         *job,
 253                    EvPixbufCache *pixbuf_cache)
 254 {
 255         CacheJobInfo *job_info;
 256         EvJobRender *job_render = EV_JOB_RENDER (job);
 257
 258         /* If the job is outside of our interest, we silently discard it */
 259         if ((job_render->page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size)) ||
 260             (job_render->page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))) {
 261                 g_object_unref (job);
 262                 return;
 263         }
 264
 265         job_info = find_job_cache (pixbuf_cache, job_render->page);
 266
 267         copy_job_page_and_selection_to_job_info (job_render, job_info, pixbuf_cache);
 268         g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region);
 269 }
 270
 271 static void
 272 job_finished_cb (EvJob         *job,
 273                  EvPixbufCache *pixbuf_cache)
 274 {
 275         CacheJobInfo *job_info;
 276         EvJobRender *job_render = EV_JOB_RENDER (job);
 277
 278         /* If the job is outside of our interest, we silently discard it */
 279         if ((job_render->page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size)) ||
 280             (job_render->page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))) {
 281                 g_object_unref (job);
 282                 return;
 283         }
 284
 285         job_info = find_job_cache (pixbuf_cache, job_render->page);
 286         copy_job_to_job_info (job_render, job_info, pixbuf_cache);
 287 }
 288
 289 /* This checks a job to see if the job would generate the right sized pixbuf
 290  * given a scale.  If it won't, it removes the job and clears it to NULL.
 291  */
 292 static void
 293 check_job_size_and_unref (EvPixbufCache *pixbuf_cache,
 294                           CacheJobInfo *job_info,
 295                           EvPageCache  *page_cache,
 296                           gfloat        scale)
 297 {
 298         gint width, height;
 299
 300         g_assert (job_info);
 301
 302         if (job_info->job == NULL)
 303                 return;
 304
 305         _get_page_size_for_scale_and_rotation (job_info->job->document,
 306                                                EV_JOB_RENDER (job_info->job)->page,
 307                                                scale,
 308                                                EV_JOB_RENDER (job_info->job)->rotation,
 309                                                &width, &height);
 310         if (width == EV_JOB_RENDER (job_info->job)->target_width &&
 311             height == EV_JOB_RENDER (job_info->job)->target_height)
 312                 return;
 313
 314         g_signal_handlers_disconnect_by_func (job_info->job,
 315                                               G_CALLBACK (job_page_ready_cb),
 316                                               pixbuf_cache);
 317         g_signal_handlers_disconnect_by_func (job_info->job,
 318                                               G_CALLBACK (job_finished_cb),
 319                                               pixbuf_cache);
 320         ev_job_cancel (job_info->job);
 321         g_object_unref (job_info->job);
 322         job_info->job = NULL;
 323 }
 324
 325 /* Do all function that copies a job from an older cache to it's position in the
 326  * new cache.  It clears the old job if it doesn't have a place.
 327  */
 328 static void
 329 move_one_job (CacheJobInfo  *job_info,
 330               EvPixbufCache *pixbuf_cache,
 331               int            page,
 332               CacheJobInfo  *new_job_list,
 333               CacheJobInfo  *new_prev_job,
 334               CacheJobInfo  *new_next_job,
 335               int            start_page,
 336               int            end_page,
 337               gint           priority)
 338 {
 339         CacheJobInfo *target_page = NULL;
 340         int page_offset;
 341         gint new_priority;
 342
 343         if (page < (start_page - pixbuf_cache->preload_cache_size) ||
 344             page > (end_page + pixbuf_cache->preload_cache_size)) {
 345                 dispose_cache_job_info (job_info, pixbuf_cache);
 346                 return;
 347         }
 348
 349         /* find the target page to copy it over to. */
 350         if (page < start_page) {
 351                 page_offset = (page - (start_page - pixbuf_cache->preload_cache_size));
 352
 353                 g_assert (page_offset >= 0 &&
 354                           page_offset < pixbuf_cache->preload_cache_size);
 355                 target_page = new_prev_job + page_offset;
 356                 new_priority = EV_JOB_PRIORITY_LOW;
 357         } else if (page > end_page) {
 358                 page_offset = (page - (end_page + 1));
 359
 360                 g_assert (page_offset >= 0 &&
 361                           page_offset < pixbuf_cache->preload_cache_size);
 362                 target_page = new_next_job + page_offset;
 363                 new_priority = EV_JOB_PRIORITY_LOW;
 364         } else {
 365                 page_offset = page - start_page;
 366                 g_assert (page_offset >= 0 &&
 367                           page_offset <= ((end_page - start_page) + 1));
 368                 new_priority = EV_JOB_PRIORITY_URGENT;
 369                 target_page = new_job_list + page_offset;
 370         }
 371
 372         *target_page = *job_info;
 373         job_info->job = NULL;
 374         job_info->region = NULL;
 375         job_info->surface = NULL;
 376         job_info->link_mapping = NULL;
 377         job_info->image_mapping = NULL;
 378         job_info->form_field_mapping = NULL;
 379         job_info->annots_mapping = NULL;
 380
 381         if (new_priority != priority && target_page->job) {
 382                 ev_job_scheduler_update_job (target_page->job, new_priority);
 383         }
 384 }
 385
 386 static void
 387 ev_pixbuf_cache_update_range (EvPixbufCache *pixbuf_cache,
 388                               gint           start_page,
 389                               gint           end_page)
 390 {
 391         CacheJobInfo *new_job_list;
 392         CacheJobInfo *new_prev_job;
 393         CacheJobInfo *new_next_job;
 394         int i, page;
 395
 396         if (pixbuf_cache->start_page == start_page &&
 397             pixbuf_cache->end_page == end_page)
 398                 return;
 399
 400         new_job_list = g_new0 (CacheJobInfo, (end_page - start_page) + 1);
 401         new_prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
 402         new_next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
 403
 404         /* We go through each job in the old cache and either clear it or move
 405          * it to a new location. */
 406
 407         /* Start with the prev cache. */
 408         page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
 409         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 410                 if (page < 0) {
 411                         dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
 412                 } else {
 413                         move_one_job (pixbuf_cache->prev_job + i,
 414                                       pixbuf_cache, page,
 415                                       new_job_list, new_prev_job, new_next_job,
 416                                       start_page, end_page, EV_JOB_PRIORITY_LOW);
 417                 }
 418                 page ++;
 419         }
 420
 421         page = pixbuf_cache->start_page;
 422         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 423                 move_one_job (pixbuf_cache->job_list + i,
 424                               pixbuf_cache, page,
 425                               new_job_list, new_prev_job, new_next_job,
 426                               start_page, end_page, EV_JOB_PRIORITY_URGENT);
 427                 page ++;
 428         }
 429
 430         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 431                 if (page >= ev_document_get_n_pages (pixbuf_cache->document)) {
 432                         dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
 433                 } else {
 434                         move_one_job (pixbuf_cache->next_job + i,
 435                                       pixbuf_cache, page,
 436                                       new_job_list, new_prev_job, new_next_job,
 437                                       start_page, end_page, EV_JOB_PRIORITY_LOW);
 438                 }
 439                 page ++;
 440         }
 441
 442         g_free (pixbuf_cache->job_list);
 443         g_free (pixbuf_cache->prev_job);
 444         g_free (pixbuf_cache->next_job);
 445
 446         pixbuf_cache->job_list = new_job_list;
 447         pixbuf_cache->prev_job = new_prev_job;
 448         pixbuf_cache->next_job = new_next_job;
 449
 450         pixbuf_cache->start_page = start_page;
 451         pixbuf_cache->end_page = end_page;
 452 }
 453
 454 static void
 455 copy_job_page_and_selection_to_job_info (EvJobRender   *job_render,
 456                                          CacheJobInfo  *job_info,
 457                                          EvPixbufCache *pixbuf_cache)
 458 {
 459         if (job_info->rc == NULL) {
 460                 job_info->rc = ev_render_context_new (job_render->ev_page,
 461                                                       job_render->rotation,
 462                                                       job_render->scale);
 463         } else {
 464                 ev_render_context_set_page (job_info->rc, job_render->ev_page);
 465                 ev_render_context_set_rotation (job_info->rc, job_render->rotation);
 466                 ev_render_context_set_scale (job_info->rc, job_render->scale);
 467         }
 468
 469         if (job_info->surface) {
 470                 cairo_surface_destroy (job_info->surface);
 471         }
 472         job_info->surface = cairo_surface_reference (job_render->surface);
 473
 474         job_info->points_set = FALSE;
 475         if (job_render->flags & EV_RENDER_INCLUDE_SELECTION) {
 476                 if (job_info->selection) {
 477                         cairo_surface_destroy (job_info->selection);
 478                         job_info->selection = NULL;
 479                 }
 480                 if (job_info->selection_region) {
 481                         gdk_region_destroy (job_info->selection_region);
 482                         job_info->selection_region = NULL;
 483                 }
 484
 485                 job_info->selection_points = job_render->selection_points;
 486                 job_info->selection_region = gdk_region_copy (job_render->selection_region);
 487                 job_info->selection = cairo_surface_reference (job_render->selection);
 488                 g_assert (job_info->selection_points.x1 >= 0);
 489                 job_info->points_set = TRUE;
 490         }
 491
 492         if (job_info->job) {
 493                 g_signal_handlers_disconnect_by_func (job_info->job,
 494                                                       G_CALLBACK (job_page_ready_cb),
 495                                                       pixbuf_cache);
 496         }
 497
 498         job_info->page_ready = TRUE;
 499 }
 500
 501 static void
 502 copy_job_to_job_info (EvJobRender   *job_render,
 503                       CacheJobInfo  *job_info,
 504                       EvPixbufCache *pixbuf_cache)
 505 {
 506         if (!job_info->page_ready) {
 507                 g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region);
 508                 copy_job_page_and_selection_to_job_info (job_render,
 509                                                          job_info,
 510                                                          pixbuf_cache);
 511         }
 512
 513         if (job_render->flags & EV_RENDER_INCLUDE_LINKS) {
 514                 if (job_info->link_mapping)
 515                         ev_mapping_list_free (job_info->link_mapping, g_object_unref);
 516                 job_info->link_mapping = job_render->link_mapping;
 517         }
 518
 519         if (job_render->flags & EV_RENDER_INCLUDE_IMAGES) {
 520                 if (job_info->image_mapping)
 521                         ev_mapping_list_free (job_info->image_mapping, g_object_unref);
 522                 job_info->image_mapping = job_render->image_mapping;
 523         }
 524
 525         if (job_render->flags & EV_RENDER_INCLUDE_FORMS) {
 526                 if (job_info->form_field_mapping)
 527                         ev_mapping_list_free (job_info->form_field_mapping, g_object_unref);
 528                 job_info->form_field_mapping = job_render->form_field_mapping;
 529         }
 530
 531         if (job_render->flags & EV_RENDER_INCLUDE_ANNOTS) {
 532                 if (job_info->annots_mapping)
 533                         ev_mapping_list_free (job_info->annots_mapping, g_object_unref);
 534                 job_info->annots_mapping = job_render->annots_mapping;
 535         }
 536
 537         if (job_render->flags & EV_RENDER_INCLUDE_TEXT) {
 538                 if (job_info->text_mapping)
 539                         gdk_region_destroy (job_info->text_mapping);
 540                 job_info->text_mapping = job_render->text_mapping;
 541         }
 542
 543         if (job_info->job) {
 544                 g_signal_handlers_disconnect_by_func (job_info->job,
 545                                                       G_CALLBACK (job_finished_cb),
 546                                                       pixbuf_cache);
 547                 ev_job_cancel (job_info->job);
 548                 g_object_unref (job_info->job);
 549                 job_info->job = NULL;
 550         }
 551 }
 552
 553 static CacheJobInfo *
 554 find_job_cache (EvPixbufCache *pixbuf_cache,
 555                 int            page)
 556 {
 557         int page_offset;
 558
 559         if (page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size) ||
 560             page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))
 561                 return NULL;
 562
 563         if (page < pixbuf_cache->start_page) {
 564                 page_offset = (page - (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size));
 565
 566                 g_assert (page_offset >= 0 &&
 567                           page_offset < pixbuf_cache->preload_cache_size);
 568                 return pixbuf_cache->prev_job + page_offset;
 569         }
 570
 571         if (page > pixbuf_cache->end_page) {
 572                 page_offset = (page - (pixbuf_cache->end_page + 1));
 573
 574                 g_assert (page_offset >= 0 &&
 575                           page_offset < pixbuf_cache->preload_cache_size);
 576                 return pixbuf_cache->next_job + page_offset;
 577         }
 578
 579         page_offset = page - pixbuf_cache->start_page;
 580         g_assert (page_offset >= 0 &&
 581                   page_offset <= PAGE_CACHE_LEN(pixbuf_cache));
 582         return pixbuf_cache->job_list + page_offset;
 583 }
 584
 585 static void
 586 ev_pixbuf_cache_clear_job_sizes (EvPixbufCache *pixbuf_cache,
 587                                  gfloat         scale)
 588 {
 589         EvPageCache *page_cache;
 590         int i;
 591
 592         page_cache = ev_page_cache_get (pixbuf_cache->document);
 593
 594         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 595                 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->job_list + i, page_cache, scale);
 596         }
 597
 598         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 599                 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->prev_job + i, page_cache, scale);
 600                 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->next_job + i, page_cache, scale);
 601         }
 602 }
 603
 604 static void
 605 get_selection_colors (GtkWidget *widget, GdkColor **text, GdkColor **base)
 606 {
 607     if (GTK_WIDGET_HAS_FOCUS (widget)) {
 608         *text = &widget->style->text [GTK_STATE_SELECTED];
 609         *base = &widget->style->base [GTK_STATE_SELECTED];
 610     } else {
 611         *text = &widget->style->text [GTK_STATE_ACTIVE];
 612         *base = &widget->style->base [GTK_STATE_ACTIVE];
 613     }
 614 }
 615
 616 static void
 617 add_job (EvPixbufCache *pixbuf_cache,
 618          CacheJobInfo  *job_info,
 619          GdkRegion     *region,
 620          gint           width,
 621          gint           height,
 622          gint           page,
 623          gint           rotation,
 624          gfloat         scale,
 625          EvJobPriority  priority)
 626 {
 627         EvRenderFlags flags = 0;
 628
 629         job_info->page_ready = FALSE;
 630
 631         if (job_info->region)
 632                 gdk_region_destroy (job_info->region);
 633         job_info->region = region ? gdk_region_copy (region) : NULL;
 634
 635         /* Figure out what else we need for this job */
 636         if (job_info->link_mapping == NULL)
 637                 flags |= EV_RENDER_INCLUDE_LINKS;
 638         if (job_info->image_mapping == NULL)
 639                 flags |= EV_RENDER_INCLUDE_IMAGES;
 640         if (job_info->form_field_mapping == NULL)
 641                 flags |= EV_RENDER_INCLUDE_FORMS;
 642         if (job_info->annots_mapping == NULL)
 643                 flags |= EV_RENDER_INCLUDE_ANNOTS;
 644         if (job_info->text_mapping == NULL)
 645                 flags |= EV_RENDER_INCLUDE_TEXT;
 646
 647         job_info->job = ev_job_render_new (pixbuf_cache->document,
 648                                            page, rotation, scale,
 649                                            width, height,
 650                                            flags);
 651
 652         if (new_selection_surface_needed (pixbuf_cache, job_info, page, scale)) {
 653                 GdkColor *text, *base;
 654
 655                 gtk_widget_ensure_style (pixbuf_cache->view);
 656                 get_selection_colors (pixbuf_cache->view, &text, &base);
 657                 ev_job_render_set_selection_info (EV_JOB_RENDER (job_info->job),
 658                                                   &(job_info->target_points),
 659                                                   job_info->selection_style,
 660                                                   text, base);
 661         }
 662
 663         g_signal_connect (job_info->job, "page-ready",
 664                           G_CALLBACK (job_page_ready_cb),
 665                           pixbuf_cache);
 666         g_signal_connect (job_info->job, "finished",
 667                           G_CALLBACK (job_finished_cb),
 668                           pixbuf_cache);
 669         ev_job_scheduler_push_job (job_info->job, priority);
 670 }
 671
 672 static void
 673 add_job_if_needed (EvPixbufCache *pixbuf_cache,
 674                    CacheJobInfo  *job_info,
 675                    EvPageCache   *page_cache,
 676                    gint           page,
 677                    gint           rotation,
 678                    gfloat         scale,
 679                    EvJobPriority  priority)
 680 {
 681         gint width, height;
 682
 683         if (job_info->job)
 684                 return;
 685
 686         _get_page_size_for_scale_and_rotation (pixbuf_cache->document,
 687                                                page, scale, rotation,
 688                                                &width, &height);
 689
 690         if (job_info->surface &&
 691             cairo_image_surface_get_width (job_info->surface) == width &&
 692             cairo_image_surface_get_height (job_info->surface) == height)
 693                 return;
 694
 695         add_job (pixbuf_cache, job_info, NULL,
 696                  width, height, page, rotation, scale,
 697                  priority);
 698 }
 699
 700 static void
 701 ev_pixbuf_cache_add_jobs_if_needed (EvPixbufCache *pixbuf_cache,
 702                                     gint           rotation,
 703                                     gfloat         scale)
 704 {
 705         EvPageCache *page_cache;
 706         CacheJobInfo *job_info;
 707         int page;
 708         int i;
 709
 710         page_cache = ev_page_cache_get (pixbuf_cache->document);
 711
 712         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 713                 job_info = (pixbuf_cache->job_list + i);
 714                 page = pixbuf_cache->start_page + i;
 715
 716                 add_job_if_needed (pixbuf_cache, job_info,
 717                                    page_cache, page, rotation, scale,
 718                                    EV_JOB_PRIORITY_URGENT);
 719         }
 720
 721         for (i = FIRST_VISIBLE_PREV(pixbuf_cache); i < pixbuf_cache->preload_cache_size; i++) {
 722                 job_info = (pixbuf_cache->prev_job + i);
 723                 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size + i;
 724
 725                 add_job_if_needed (pixbuf_cache, job_info,
 726                                    page_cache, page, rotation, scale,
 727                                    EV_JOB_PRIORITY_LOW);
 728         }
 729
 730         for (i = 0; i < VISIBLE_NEXT_LEN(pixbuf_cache); i++) {
 731                 job_info = (pixbuf_cache->next_job + i);
 732                 page = pixbuf_cache->end_page + 1 + i;
 733
 734                 add_job_if_needed (pixbuf_cache, job_info,
 735                                    page_cache, page, rotation, scale,
 736                                    EV_JOB_PRIORITY_LOW);
 737         }
 738
 739 }
 740
 741 void
 742 ev_pixbuf_cache_set_page_range (EvPixbufCache  *pixbuf_cache,
 743                                 gint            start_page,
 744                                 gint            end_page,
 745                                 gint            rotation,
 746                                 gfloat          scale,
 747                                 GList          *selection_list)
 748 {
 749         g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
 750
 751         g_return_if_fail (start_page >= 0 && start_page < ev_document_get_n_pages (pixbuf_cache->document));
 752         g_return_if_fail (end_page >= 0 && end_page < ev_document_get_n_pages (pixbuf_cache->document));
 753         g_return_if_fail (end_page >= start_page);
 754
 755         /* First, resize the page_range as needed.  We cull old pages
 756          * mercilessly. */
 757         ev_pixbuf_cache_update_range (pixbuf_cache, start_page, end_page);
 758
 759         /* Then, we update the current jobs to see if any of them are the wrong
 760          * size, we remove them if we need to. */
 761         ev_pixbuf_cache_clear_job_sizes (pixbuf_cache, scale);
 762
 763         /* Next, we update the target selection for our pages */
 764         ev_pixbuf_cache_set_selection_list (pixbuf_cache, selection_list);
 765
 766         /* Finally, we add the new jobs for all the sizes that don't have a
 767          * pixbuf */
 768         ev_pixbuf_cache_add_jobs_if_needed (pixbuf_cache, rotation, scale);
 769 }
 770
 771 cairo_surface_t *
 772 ev_pixbuf_cache_get_surface (EvPixbufCache *pixbuf_cache,
 773                              gint           page)
 774 {
 775         CacheJobInfo *job_info;
 776
 777         job_info = find_job_cache (pixbuf_cache, page);
 778         if (job_info == NULL)
 779                 return NULL;
 780
 781         if (job_info->page_ready)
 782                 return job_info->surface;
 783
 784         /* We don't need to wait for the idle to handle the callback */
 785         if (job_info->job &&
 786             EV_JOB_RENDER (job_info->job)->page_ready) {
 787                 copy_job_page_and_selection_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 788                 g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region);
 789         }
 790
 791         return job_info->surface;
 792 }
 793
 794 GList *
 795 ev_pixbuf_cache_get_link_mapping (EvPixbufCache *pixbuf_cache,
 796                                   gint           page)
 797 {
 798         CacheJobInfo *job_info;
 799
 800         job_info = find_job_cache (pixbuf_cache, page);
 801         if (job_info == NULL)
 802                 return NULL;
 803
 804         /* We don't need to wait for the idle to handle the callback */
 805         if (job_info->job &&
 806             EV_JOB (job_info->job)->finished) {
 807                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 808         }
 809
 810         return job_info->link_mapping;
 811 }
 812
 813 GList *
 814 ev_pixbuf_cache_get_image_mapping (EvPixbufCache *pixbuf_cache,
 815                                    gint           page)
 816 {
 817         CacheJobInfo *job_info;
 818
 819         if (!EV_IS_DOCUMENT_IMAGES (pixbuf_cache->document))
 820                 return NULL;
 821
 822         job_info = find_job_cache (pixbuf_cache, page);
 823         if (job_info == NULL)
 824                 return NULL;
 825
 826         /* We don't need to wait for the idle to handle the callback */
 827         if (job_info->job &&
 828             EV_JOB (job_info->job)->finished) {
 829                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 830         }
 831
 832         return job_info->image_mapping;
 833 }
 834
 835 GList *
 836 ev_pixbuf_cache_get_form_field_mapping (EvPixbufCache *pixbuf_cache,
 837                                         gint           page)
 838 {
 839         CacheJobInfo *job_info;
 840
 841         if (!EV_IS_DOCUMENT_FORMS (pixbuf_cache->document))
 842                 return NULL;
 843
 844         job_info = find_job_cache (pixbuf_cache, page);
 845         if (job_info == NULL)
 846                 return NULL;
 847
 848         /* We don't need to wait for the idle to handle the callback */
 849         if (job_info->job &&
 850            EV_JOB (job_info->job)->finished) {
 851                 copy_job_to_job_info (EV_JOB_RENDER(job_info->job), job_info, pixbuf_cache);
 852         }
 853
 854         return job_info->form_field_mapping;
 855 }
 856
 857 GList *
 858 ev_pixbuf_cache_get_annots_mapping (EvPixbufCache *pixbuf_cache,
 859                                     gint           page)
 860 {
 861         CacheJobInfo *job_info;
 862
 863         if (!EV_IS_DOCUMENT_ANNOTATIONS (pixbuf_cache->document))
 864                 return NULL;
 865
 866         job_info = find_job_cache (pixbuf_cache, page);
 867         if (job_info == NULL)
 868                 return NULL;
 869
 870         /* We don't need to wait for the idle to handle the callback */
 871         if (job_info->job &&
 872            EV_JOB (job_info->job)->finished) {
 873                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 874         }
 875
 876         return job_info->annots_mapping;
 877 }
 878
 879 static gboolean
 880 new_selection_surface_needed (EvPixbufCache *pixbuf_cache,
 881                               CacheJobInfo  *job_info,
 882                               gint           page,
 883                               gfloat         scale)
 884 {
 885         if (job_info->selection && job_info->rc) {
 886                 gint width, height;
 887                 gint selection_width, selection_height;
 888
 889                 _get_page_size_for_scale_and_rotation (pixbuf_cache->document,
 890                                                        page, scale, job_info->rc->rotation,
 891                                                        &width, &height);
 892
 893                 selection_width = cairo_image_surface_get_width (job_info->selection);
 894                 selection_height = cairo_image_surface_get_height (job_info->selection);
 895
 896                 if (width != selection_width || height != selection_height)
 897                         return TRUE;
 898         } else {
 899                 if (job_info->points_set)
 900                         return TRUE;
 901         }
 902
 903         return FALSE;
 904 }
 905
 906 static void
 907 clear_selection_if_needed (EvPixbufCache *pixbuf_cache,
 908                            CacheJobInfo  *job_info,
 909                            gint           page,
 910                            gfloat         scale)
 911 {
 912         if (new_selection_surface_needed (pixbuf_cache, job_info, page, scale)) {
 913                 if (job_info->selection)
 914                         cairo_surface_destroy (job_info->selection);
 915                 job_info->selection = NULL;
 916                 job_info->selection_points.x1 = -1;
 917         }
 918 }
 919
 920 GdkRegion *
 921 ev_pixbuf_cache_get_text_mapping (EvPixbufCache *pixbuf_cache,
 922                                   gint           page)
 923 {
 924         CacheJobInfo *job_info;
 925
 926         job_info = find_job_cache (pixbuf_cache, page);
 927         if (job_info == NULL)
 928                 return NULL;
 929
 930         /* We don't need to wait for the idle to handle the callback */
 931         if (job_info->job &&
 932             EV_JOB (job_info->job)->finished) {
 933                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 934         }
 935
 936         return job_info->text_mapping;
 937 }
 938
 939 /* Clears the cache of jobs and pixbufs.
 940  */
 941 void
 942 ev_pixbuf_cache_clear (EvPixbufCache *pixbuf_cache)
 943 {
 944         int i;
 945
 946         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 947                 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
 948                 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
 949         }
 950
 951         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 952                 dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache);
 953         }
 954 }
 955
 956
 957 void
 958 ev_pixbuf_cache_style_changed (EvPixbufCache *pixbuf_cache)
 959 {
 960         gint i;
 961
 962         /* FIXME: doesn't update running jobs. */
 963         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 964                 CacheJobInfo *job_info;
 965
 966                 job_info = pixbuf_cache->prev_job + i;
 967                 if (job_info->selection) {
 968                         cairo_surface_destroy (job_info->selection);
 969                         job_info->selection = NULL;
 970                 }
 971
 972                 job_info = pixbuf_cache->next_job + i;
 973                 if (job_info->selection) {
 974                         cairo_surface_destroy (job_info->selection);
 975                         job_info->selection = NULL;
 976                 }
 977         }
 978
 979         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 980                 CacheJobInfo *job_info;
 981
 982                 job_info = pixbuf_cache->job_list + i;
 983                 if (job_info->selection) {
 984                         cairo_surface_destroy (job_info->selection);
 985                         job_info->selection = NULL;
 986                 }
 987         }
 988 }
 989
 990 cairo_surface_t *
 991 ev_pixbuf_cache_get_selection_surface (EvPixbufCache  *pixbuf_cache,
 992                                        gint            page,
 993                                        gfloat          scale,
 994                                        GdkRegion     **region)
 995 {
 996         CacheJobInfo *job_info;
 997
 998         /* the document does not implement the selection interface */
 999         if (!EV_IS_SELECTION (pixbuf_cache->document))
1000                 return NULL;
1001
1002         job_info = find_job_cache (pixbuf_cache, page);
1003         if (job_info == NULL)
1004                 return NULL;
1005
1006         /* No selection on this page */
1007         if (!job_info->points_set)
1008                 return NULL;
1009
1010         /* Create new render context if needed (selection + fast scrolling) */
1011         if (job_info->rc == NULL) {
1012                 EvPage  *ev_page;
1013                 ev_page = ev_document_get_page (pixbuf_cache->document, page);
1014                 job_info->rc = ev_render_context_new (ev_page, 0, scale);
1015                 g_object_unref (ev_page);
1016         }
1017
1018         /* Update the rc */
1019         ev_render_context_set_scale (job_info->rc, scale);
1020
1021         /* If we have a running job, we just return what we have under the
1022          * assumption that it'll be updated later and we can scale it as need
1023          * be */
1024         if (job_info->job && (EV_JOB_RENDER (job_info->job)->flags & EV_RENDER_INCLUDE_SELECTION))
1025                 return job_info->selection;
1026
1027         /* Now, lets see if we need to resize the image.  If we do, we clear the
1028          * old one. */
1029         clear_selection_if_needed (pixbuf_cache, job_info, page, scale);
1030
1031         /* Finally, we see if the two scales are the same, and get a new pixbuf
1032          * if needed.  We do this synchronously for now.  At some point, we
1033          * _should_ be able to get rid of the doc_mutex, so the synchronicity
1034          * doesn't kill us.  Rendering a few glyphs should really be fast.
1035          */
1036         if (ev_rect_cmp (&(job_info->target_points), &(job_info->selection_points))) {
1037                 EvRectangle *old_points;
1038                 GdkColor *text, *base;
1039
1040                 /* we need to get a new selection pixbuf */
1041                 ev_document_doc_mutex_lock ();
1042                 if (job_info->selection_points.x1 < 0) {
1043                         g_assert (job_info->selection == NULL);
1044                         old_points = NULL;
1045                 } else {
1046                         g_assert (job_info->selection != NULL);
1047                         old_points = &(job_info->selection_points);
1048                 }
1049
1050                 if (job_info->selection_region)
1051                         gdk_region_destroy (job_info->selection_region);
1052                 job_info->selection_region =
1053                         ev_selection_get_selection_region (EV_SELECTION (pixbuf_cache->document),
1054                                                            job_info->rc,
1055                                                            job_info->selection_style,
1056                                                            &(job_info->target_points));
1057
1058                 gtk_widget_ensure_style (pixbuf_cache->view);
1059
1060                 get_selection_colors (pixbuf_cache->view, &text, &base);
1061
1062                 ev_selection_render_selection (EV_SELECTION (pixbuf_cache->document),
1063                                                job_info->rc, &(job_info->selection),
1064                                                &(job_info->target_points),
1065                                                old_points,
1066                                                job_info->selection_style,
1067                                                text, base);
1068                 job_info->selection_points = job_info->target_points;
1069                 ev_document_doc_mutex_unlock ();
1070         }
1071         if (region)
1072                 *region = job_info->selection_region;
1073         return job_info->selection;
1074 }
1075
1076 static void
1077 update_job_selection (CacheJobInfo    *job_info,
1078                       EvViewSelection *selection)
1079 {
1080         job_info->points_set = TRUE;
1081         job_info->target_points = selection->rect;
1082         job_info->selection_style = selection->style;
1083 }
1084
1085 static void
1086 clear_job_selection (CacheJobInfo *job_info)
1087 {
1088         job_info->points_set = FALSE;
1089         job_info->selection_points.x1 = -1;
1090
1091         if (job_info->selection) {
1092                 cairo_surface_destroy (job_info->selection);
1093                 job_info->selection = NULL;
1094         }
1095 }
1096
1097 /* This function will reset the selection on pages that no longer have them, and
1098  * will update the target_selection on those that need it.  It will _not_ free
1099  * the previous selection_list -- that's up to caller to do.
1100  */
1101 void
1102 ev_pixbuf_cache_set_selection_list (EvPixbufCache *pixbuf_cache,
1103                                     GList         *selection_list)
1104 {
1105         EvViewSelection *selection;
1106         GList *list = selection_list;
1107         int page;
1108         int i;
1109
1110         g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
1111
1112         if (!EV_IS_SELECTION (pixbuf_cache->document))
1113                 return;
1114
1115         /* We check each area to see what needs updating, and what needs freeing; */
1116         page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
1117         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1118                 if (page < 0) {
1119                         page ++;
1120                         continue;
1121                 }
1122
1123                 selection = NULL;
1124                 while (list) {
1125                         if (((EvViewSelection *)list->data)->page == page) {
1126                                 selection = list->data;
1127                                 break;
1128                         } else if (((EvViewSelection *)list->data)->page > page)
1129                                 break;
1130                         list = list->next;
1131                 }
1132
1133                 if (selection)
1134                         update_job_selection (pixbuf_cache->prev_job + i, selection);
1135                 else
1136                         clear_job_selection (pixbuf_cache->prev_job + i);
1137                 page ++;
1138         }
1139
1140         page = pixbuf_cache->start_page;
1141         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
1142                 selection = NULL;
1143                 while (list) {
1144                         if (((EvViewSelection *)list->data)->page == page) {
1145                                 selection = list->data;
1146                                 break;
1147                         } else if (((EvViewSelection *)list->data)->page > page)
1148                                 break;
1149                         list = list->next;
1150                 }
1151
1152                 if (selection)
1153                         update_job_selection (pixbuf_cache->job_list + i, selection);
1154                 else
1155                         clear_job_selection (pixbuf_cache->job_list + i);
1156                 page ++;
1157         }
1158
1159         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1160                 if (page >= ev_document_get_n_pages (pixbuf_cache->document))
1161                         break;
1162
1163                 selection = NULL;
1164                 while (list) {
1165                         if (((EvViewSelection *)list->data)->page == page) {
1166                                 selection = list->data;
1167                                 break;
1168                         } else if (((EvViewSelection *)list->data)->page > page)
1169                                 break;
1170                         list = list->next;
1171                 }
1172
1173                 if (selection)
1174                         update_job_selection (pixbuf_cache->next_job + i, selection);
1175                 else
1176                         clear_job_selection (pixbuf_cache->next_job + i);
1177                 page ++;
1178         }
1179 }
1180
1181
1182 /* Returns what the pixbuf cache thinks is */
1183
1184 GList *
1185 ev_pixbuf_cache_get_selection_list (EvPixbufCache *pixbuf_cache)
1186 {
1187         EvViewSelection *selection;
1188         GList *retval = NULL;
1189         int page;
1190         int i;
1191
1192         g_return_val_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache), NULL);
1193
1194         /* We check each area to see what needs updating, and what needs freeing; */
1195         page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
1196         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1197                 if (page < 0) {
1198                         page ++;
1199                         continue;
1200                 }
1201
1202                 if (pixbuf_cache->prev_job[i].selection_points.x1 != -1) {
1203                         selection = g_new0 (EvViewSelection, 1);
1204                         selection->page = page;
1205                         selection->rect = pixbuf_cache->prev_job[i].selection_points;
1206                         if (pixbuf_cache->prev_job[i].selection_region)
1207                                 selection->covered_region = gdk_region_copy (pixbuf_cache->prev_job[i].selection_region);
1208                         retval = g_list_append (retval, selection);
1209                 }
1210
1211                 page ++;
1212         }
1213
1214         page = pixbuf_cache->start_page;
1215         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
1216                 if (pixbuf_cache->job_list[i].selection_points.x1 != -1) {
1217                         selection = g_new0 (EvViewSelection, 1);
1218                         selection->page = page;
1219                         selection->rect = pixbuf_cache->job_list[i].selection_points;
1220                         if (pixbuf_cache->job_list[i].selection_region)
1221                                 selection->covered_region = gdk_region_copy (pixbuf_cache->job_list[i].selection_region);
1222                         retval = g_list_append (retval, selection);
1223                 }
1224
1225                 page ++;
1226         }
1227
1228         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1229                 if (page >= ev_document_get_n_pages (pixbuf_cache->document))
1230                         break;
1231
1232                 if (pixbuf_cache->next_job[i].selection_points.x1 != -1) {
1233                         selection = g_new0 (EvViewSelection, 1);
1234                         selection->page = page;
1235                         selection->rect = pixbuf_cache->next_job[i].selection_points;
1236                         if (pixbuf_cache->next_job[i].selection_region)
1237                                 selection->covered_region = gdk_region_copy (pixbuf_cache->next_job[i].selection_region);
1238                         retval = g_list_append (retval, selection);
1239                 }
1240
1241                 page ++;
1242         }
1243
1244         return retval;
1245 }
1246
1247 void
1248 ev_pixbuf_cache_reload_page (EvPixbufCache *pixbuf_cache,
1249                              GdkRegion     *region,
1250                              gint           page,
1251                              gint           rotation,
1252                              gdouble        scale)
1253 {
1254         CacheJobInfo *job_info;
1255         gint width, height;
1256
1257         job_info = find_job_cache (pixbuf_cache, page);
1258         if (job_info == NULL)
1259                 return;
1260
1261         _get_page_size_for_scale_and_rotation (pixbuf_cache->document,
1262                                                page, scale, rotation,
1263                                                &width, &height);
1264         add_job (pixbuf_cache, job_info, region,
1265                  width, height, page, rotation, scale,
1266                  EV_JOB_PRIORITY_URGENT);
1267 }
1268
1269