libview/ev-pixbuf-cache.c

   1 #include <config.h>
   2 #include "ev-pixbuf-cache.h"
   3 #include "ev-job-scheduler.h"
   4 #include "ev-mapping.h"
   5 #include "ev-document-forms.h"
   6 #include "ev-document-images.h"
   7 #include "ev-document-annotations.h"
   8 #include "ev-view-private.h"
   9
  10 typedef struct _CacheJobInfo
  11 {
  12         EvJob *job;
  13         EvRenderContext *rc;
  14         gboolean page_ready;
  15
  16         /* Region of the page that needs to be drawn */
  17         GdkRegion *region;
  18
  19         /* Data we get from rendering */
  20         cairo_surface_t *surface;
  21         GList *link_mapping;
  22         GList *image_mapping;
  23         GList *form_field_mapping;
  24         GList *annots_mapping;
  25         GdkRegion *text_mapping;
  26
  27         /* Selection data.
  28          * Selection_points are the coordinates encapsulated in selection.
  29          * target_points is the target selection size. */
  30         EvRectangle      selection_points;
  31         EvRectangle      target_points;
  32         EvSelectionStyle selection_style;
  33         gboolean         points_set;
  34
  35         cairo_surface_t *selection;
  36         GdkRegion *selection_region;
  37 } CacheJobInfo;
  38
  39 struct _EvPixbufCache
  40 {
  41         GObject parent;
  42
  43         /* We keep a link to our containing view just for style information. */
  44         GtkWidget *view;
  45         EvDocument *document;
  46         int start_page;
  47         int end_page;
  48         gboolean inverted_colors;
  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                           gfloat         scale)
 296 {
 297         gint width, height;
 298
 299         g_assert (job_info);
 300
 301         if (job_info->job == NULL)
 302                 return;
 303
 304         _get_page_size_for_scale_and_rotation (job_info->job->document,
 305                                                EV_JOB_RENDER (job_info->job)->page,
 306                                                scale,
 307                                                EV_JOB_RENDER (job_info->job)->rotation,
 308                                                &width, &height);
 309         if (width == EV_JOB_RENDER (job_info->job)->target_width &&
 310             height == EV_JOB_RENDER (job_info->job)->target_height)
 311                 return;
 312
 313         g_signal_handlers_disconnect_by_func (job_info->job,
 314                                               G_CALLBACK (job_page_ready_cb),
 315                                               pixbuf_cache);
 316         g_signal_handlers_disconnect_by_func (job_info->job,
 317                                               G_CALLBACK (job_finished_cb),
 318                                               pixbuf_cache);
 319         ev_job_cancel (job_info->job);
 320         g_object_unref (job_info->job);
 321         job_info->job = NULL;
 322 }
 323
 324 /* Do all function that copies a job from an older cache to it's position in the
 325  * new cache.  It clears the old job if it doesn't have a place.
 326  */
 327 static void
 328 move_one_job (CacheJobInfo  *job_info,
 329               EvPixbufCache *pixbuf_cache,
 330               int            page,
 331               CacheJobInfo  *new_job_list,
 332               CacheJobInfo  *new_prev_job,
 333               CacheJobInfo  *new_next_job,
 334               int            start_page,
 335               int            end_page,
 336               gint           priority)
 337 {
 338         CacheJobInfo *target_page = NULL;
 339         int page_offset;
 340         gint new_priority;
 341
 342         if (page < (start_page - pixbuf_cache->preload_cache_size) ||
 343             page > (end_page + pixbuf_cache->preload_cache_size)) {
 344                 dispose_cache_job_info (job_info, pixbuf_cache);
 345                 return;
 346         }
 347
 348         /* find the target page to copy it over to. */
 349         if (page < start_page) {
 350                 page_offset = (page - (start_page - pixbuf_cache->preload_cache_size));
 351
 352                 g_assert (page_offset >= 0 &&
 353                           page_offset < pixbuf_cache->preload_cache_size);
 354                 target_page = new_prev_job + page_offset;
 355                 new_priority = EV_JOB_PRIORITY_LOW;
 356         } else if (page > end_page) {
 357                 page_offset = (page - (end_page + 1));
 358
 359                 g_assert (page_offset >= 0 &&
 360                           page_offset < pixbuf_cache->preload_cache_size);
 361                 target_page = new_next_job + page_offset;
 362                 new_priority = EV_JOB_PRIORITY_LOW;
 363         } else {
 364                 page_offset = page - start_page;
 365                 g_assert (page_offset >= 0 &&
 366                           page_offset <= ((end_page - start_page) + 1));
 367                 new_priority = EV_JOB_PRIORITY_URGENT;
 368                 target_page = new_job_list + page_offset;
 369         }
 370
 371         *target_page = *job_info;
 372         job_info->job = NULL;
 373         job_info->region = NULL;
 374         job_info->surface = NULL;
 375         job_info->link_mapping = NULL;
 376         job_info->image_mapping = NULL;
 377         job_info->form_field_mapping = NULL;
 378         job_info->annots_mapping = NULL;
 379
 380         if (new_priority != priority && target_page->job) {
 381                 ev_job_scheduler_update_job (target_page->job, new_priority);
 382         }
 383 }
 384
 385 static void
 386 ev_pixbuf_cache_update_range (EvPixbufCache *pixbuf_cache,
 387                               gint           start_page,
 388                               gint           end_page)
 389 {
 390         CacheJobInfo *new_job_list;
 391         CacheJobInfo *new_prev_job;
 392         CacheJobInfo *new_next_job;
 393         int i, page;
 394
 395         if (pixbuf_cache->start_page == start_page &&
 396             pixbuf_cache->end_page == end_page)
 397                 return;
 398
 399         new_job_list = g_new0 (CacheJobInfo, (end_page - start_page) + 1);
 400         new_prev_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
 401         new_next_job = g_new0 (CacheJobInfo, pixbuf_cache->preload_cache_size);
 402
 403         /* We go through each job in the old cache and either clear it or move
 404          * it to a new location. */
 405
 406         /* Start with the prev cache. */
 407         page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
 408         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 409                 if (page < 0) {
 410                         dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
 411                 } else {
 412                         move_one_job (pixbuf_cache->prev_job + i,
 413                                       pixbuf_cache, page,
 414                                       new_job_list, new_prev_job, new_next_job,
 415                                       start_page, end_page, EV_JOB_PRIORITY_LOW);
 416                 }
 417                 page ++;
 418         }
 419
 420         page = pixbuf_cache->start_page;
 421         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 422                 move_one_job (pixbuf_cache->job_list + i,
 423                               pixbuf_cache, page,
 424                               new_job_list, new_prev_job, new_next_job,
 425                               start_page, end_page, EV_JOB_PRIORITY_URGENT);
 426                 page ++;
 427         }
 428
 429         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 430                 if (page >= ev_document_get_n_pages (pixbuf_cache->document)) {
 431                         dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
 432                 } else {
 433                         move_one_job (pixbuf_cache->next_job + i,
 434                                       pixbuf_cache, page,
 435                                       new_job_list, new_prev_job, new_next_job,
 436                                       start_page, end_page, EV_JOB_PRIORITY_LOW);
 437                 }
 438                 page ++;
 439         }
 440
 441         g_free (pixbuf_cache->job_list);
 442         g_free (pixbuf_cache->prev_job);
 443         g_free (pixbuf_cache->next_job);
 444
 445         pixbuf_cache->job_list = new_job_list;
 446         pixbuf_cache->prev_job = new_prev_job;
 447         pixbuf_cache->next_job = new_next_job;
 448
 449         pixbuf_cache->start_page = start_page;
 450         pixbuf_cache->end_page = end_page;
 451 }
 452
 453 static void
 454 copy_job_page_and_selection_to_job_info (EvJobRender   *job_render,
 455                                          CacheJobInfo  *job_info,
 456                                          EvPixbufCache *pixbuf_cache)
 457 {
 458         if (job_info->rc == NULL) {
 459                 job_info->rc = ev_render_context_new (job_render->ev_page,
 460                                                       job_render->rotation,
 461                                                       job_render->scale);
 462         } else {
 463                 ev_render_context_set_page (job_info->rc, job_render->ev_page);
 464                 ev_render_context_set_rotation (job_info->rc, job_render->rotation);
 465                 ev_render_context_set_scale (job_info->rc, job_render->scale);
 466         }
 467
 468         if (job_info->surface) {
 469                 cairo_surface_destroy (job_info->surface);
 470         }
 471         job_info->surface = cairo_surface_reference (job_render->surface);
 472         if (pixbuf_cache->inverted_colors) {
 473                 ev_document_misc_invert_surface (job_info->surface);
 474         }
 475
 476         job_info->points_set = FALSE;
 477         if (job_render->flags & EV_RENDER_INCLUDE_SELECTION) {
 478                 if (job_info->selection) {
 479                         cairo_surface_destroy (job_info->selection);
 480                         job_info->selection = NULL;
 481                 }
 482                 if (job_info->selection_region) {
 483                         gdk_region_destroy (job_info->selection_region);
 484                         job_info->selection_region = NULL;
 485                 }
 486
 487                 job_info->selection_points = job_render->selection_points;
 488                 job_info->selection_region = gdk_region_copy (job_render->selection_region);
 489                 job_info->selection = cairo_surface_reference (job_render->selection);
 490                 g_assert (job_info->selection_points.x1 >= 0);
 491                 job_info->points_set = TRUE;
 492         }
 493
 494         if (job_info->job) {
 495                 g_signal_handlers_disconnect_by_func (job_info->job,
 496                                                       G_CALLBACK (job_page_ready_cb),
 497                                                       pixbuf_cache);
 498         }
 499
 500         job_info->page_ready = TRUE;
 501 }
 502
 503 static void
 504 copy_job_to_job_info (EvJobRender   *job_render,
 505                       CacheJobInfo  *job_info,
 506                       EvPixbufCache *pixbuf_cache)
 507 {
 508         if (!job_info->page_ready) {
 509                 g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region);
 510                 copy_job_page_and_selection_to_job_info (job_render,
 511                                                          job_info,
 512                                                          pixbuf_cache);
 513         }
 514
 515         if (job_render->flags & EV_RENDER_INCLUDE_LINKS) {
 516                 if (job_info->link_mapping)
 517                         ev_mapping_list_free (job_info->link_mapping, g_object_unref);
 518                 job_info->link_mapping = job_render->link_mapping;
 519         }
 520
 521         if (job_render->flags & EV_RENDER_INCLUDE_IMAGES) {
 522                 if (job_info->image_mapping)
 523                         ev_mapping_list_free (job_info->image_mapping, g_object_unref);
 524                 job_info->image_mapping = job_render->image_mapping;
 525         }
 526
 527         if (job_render->flags & EV_RENDER_INCLUDE_FORMS) {
 528                 if (job_info->form_field_mapping)
 529                         ev_mapping_list_free (job_info->form_field_mapping, g_object_unref);
 530                 job_info->form_field_mapping = job_render->form_field_mapping;
 531         }
 532
 533         if (job_render->flags & EV_RENDER_INCLUDE_ANNOTS) {
 534                 if (job_info->annots_mapping)
 535                         ev_mapping_list_free (job_info->annots_mapping, g_object_unref);
 536                 job_info->annots_mapping = job_render->annots_mapping;
 537         }
 538
 539         if (job_render->flags & EV_RENDER_INCLUDE_TEXT) {
 540                 if (job_info->text_mapping)
 541                         gdk_region_destroy (job_info->text_mapping);
 542                 job_info->text_mapping = job_render->text_mapping;
 543         }
 544
 545         if (job_info->job) {
 546                 g_signal_handlers_disconnect_by_func (job_info->job,
 547                                                       G_CALLBACK (job_finished_cb),
 548                                                       pixbuf_cache);
 549                 ev_job_cancel (job_info->job);
 550                 g_object_unref (job_info->job);
 551                 job_info->job = NULL;
 552         }
 553 }
 554
 555 static CacheJobInfo *
 556 find_job_cache (EvPixbufCache *pixbuf_cache,
 557                 int            page)
 558 {
 559         int page_offset;
 560
 561         if (page < (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size) ||
 562             page > (pixbuf_cache->end_page + pixbuf_cache->preload_cache_size))
 563                 return NULL;
 564
 565         if (page < pixbuf_cache->start_page) {
 566                 page_offset = (page - (pixbuf_cache->start_page - pixbuf_cache->preload_cache_size));
 567
 568                 g_assert (page_offset >= 0 &&
 569                           page_offset < pixbuf_cache->preload_cache_size);
 570                 return pixbuf_cache->prev_job + page_offset;
 571         }
 572
 573         if (page > pixbuf_cache->end_page) {
 574                 page_offset = (page - (pixbuf_cache->end_page + 1));
 575
 576                 g_assert (page_offset >= 0 &&
 577                           page_offset < pixbuf_cache->preload_cache_size);
 578                 return pixbuf_cache->next_job + page_offset;
 579         }
 580
 581         page_offset = page - pixbuf_cache->start_page;
 582         g_assert (page_offset >= 0 &&
 583                   page_offset <= PAGE_CACHE_LEN(pixbuf_cache));
 584         return pixbuf_cache->job_list + page_offset;
 585 }
 586
 587 static void
 588 ev_pixbuf_cache_clear_job_sizes (EvPixbufCache *pixbuf_cache,
 589                                  gfloat         scale)
 590 {
 591         int i;
 592
 593         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 594                 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->job_list + i, scale);
 595         }
 596
 597         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 598                 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->prev_job + i, scale);
 599                 check_job_size_and_unref (pixbuf_cache, pixbuf_cache->next_job + i, scale);
 600         }
 601 }
 602
 603 static void
 604 get_selection_colors (GtkWidget *widget, GdkColor **text, GdkColor **base)
 605 {
 606     if (GTK_WIDGET_HAS_FOCUS (widget)) {
 607         *text = &widget->style->text [GTK_STATE_SELECTED];
 608         *base = &widget->style->base [GTK_STATE_SELECTED];
 609     } else {
 610         *text = &widget->style->text [GTK_STATE_ACTIVE];
 611         *base = &widget->style->base [GTK_STATE_ACTIVE];
 612     }
 613 }
 614
 615 static void
 616 add_job (EvPixbufCache *pixbuf_cache,
 617          CacheJobInfo  *job_info,
 618          GdkRegion     *region,
 619          gint           width,
 620          gint           height,
 621          gint           page,
 622          gint           rotation,
 623          gfloat         scale,
 624          EvJobPriority  priority)
 625 {
 626         EvRenderFlags flags = 0;
 627
 628         job_info->page_ready = FALSE;
 629
 630         if (job_info->region)
 631                 gdk_region_destroy (job_info->region);
 632         job_info->region = region ? gdk_region_copy (region) : NULL;
 633
 634         /* Figure out what else we need for this job */
 635         if (job_info->link_mapping == NULL)
 636                 flags |= EV_RENDER_INCLUDE_LINKS;
 637         if (job_info->image_mapping == NULL)
 638                 flags |= EV_RENDER_INCLUDE_IMAGES;
 639         if (job_info->form_field_mapping == NULL)
 640                 flags |= EV_RENDER_INCLUDE_FORMS;
 641         if (job_info->annots_mapping == NULL)
 642                 flags |= EV_RENDER_INCLUDE_ANNOTS;
 643         if (job_info->text_mapping == NULL)
 644                 flags |= EV_RENDER_INCLUDE_TEXT;
 645
 646         job_info->job = ev_job_render_new (pixbuf_cache->document,
 647                                            page, rotation, scale,
 648                                            width, height,
 649                                            flags);
 650
 651         if (new_selection_surface_needed (pixbuf_cache, job_info, page, scale)) {
 652                 GdkColor *text, *base;
 653
 654                 gtk_widget_ensure_style (pixbuf_cache->view);
 655                 get_selection_colors (pixbuf_cache->view, &text, &base);
 656                 ev_job_render_set_selection_info (EV_JOB_RENDER (job_info->job),
 657                                                   &(job_info->target_points),
 658                                                   job_info->selection_style,
 659                                                   text, base);
 660         }
 661
 662         g_signal_connect (job_info->job, "page-ready",
 663                           G_CALLBACK (job_page_ready_cb),
 664                           pixbuf_cache);
 665         g_signal_connect (job_info->job, "finished",
 666                           G_CALLBACK (job_finished_cb),
 667                           pixbuf_cache);
 668         ev_job_scheduler_push_job (job_info->job, priority);
 669 }
 670
 671 static void
 672 add_job_if_needed (EvPixbufCache *pixbuf_cache,
 673                    CacheJobInfo  *job_info,
 674                    gint           page,
 675                    gint           rotation,
 676                    gfloat         scale,
 677                    EvJobPriority  priority)
 678 {
 679         gint width, height;
 680
 681         if (job_info->job)
 682                 return;
 683
 684         _get_page_size_for_scale_and_rotation (pixbuf_cache->document,
 685                                                page, scale, rotation,
 686                                                &width, &height);
 687
 688         if (job_info->surface &&
 689             cairo_image_surface_get_width (job_info->surface) == width &&
 690             cairo_image_surface_get_height (job_info->surface) == height)
 691                 return;
 692
 693         add_job (pixbuf_cache, job_info, NULL,
 694                  width, height, page, rotation, scale,
 695                  priority);
 696 }
 697
 698 static void
 699 ev_pixbuf_cache_add_jobs_if_needed (EvPixbufCache *pixbuf_cache,
 700                                     gint           rotation,
 701                                     gfloat         scale)
 702 {
 703         CacheJobInfo *job_info;
 704         int page;
 705         int i;
 706
 707         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 708                 job_info = (pixbuf_cache->job_list + i);
 709                 page = pixbuf_cache->start_page + i;
 710
 711                 add_job_if_needed (pixbuf_cache, job_info,
 712                                    page, rotation, scale,
 713                                    EV_JOB_PRIORITY_URGENT);
 714         }
 715
 716         for (i = FIRST_VISIBLE_PREV(pixbuf_cache); i < pixbuf_cache->preload_cache_size; i++) {
 717                 job_info = (pixbuf_cache->prev_job + i);
 718                 page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size + i;
 719
 720                 add_job_if_needed (pixbuf_cache, job_info,
 721                                    page, rotation, scale,
 722                                    EV_JOB_PRIORITY_LOW);
 723         }
 724
 725         for (i = 0; i < VISIBLE_NEXT_LEN(pixbuf_cache); i++) {
 726                 job_info = (pixbuf_cache->next_job + i);
 727                 page = pixbuf_cache->end_page + 1 + i;
 728
 729                 add_job_if_needed (pixbuf_cache, job_info,
 730                                    page, rotation, scale,
 731                                    EV_JOB_PRIORITY_LOW);
 732         }
 733
 734 }
 735
 736 void
 737 ev_pixbuf_cache_set_page_range (EvPixbufCache  *pixbuf_cache,
 738                                 gint            start_page,
 739                                 gint            end_page,
 740                                 gint            rotation,
 741                                 gfloat          scale,
 742                                 GList          *selection_list)
 743 {
 744         g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
 745
 746         g_return_if_fail (start_page >= 0 && start_page < ev_document_get_n_pages (pixbuf_cache->document));
 747         g_return_if_fail (end_page >= 0 && end_page < ev_document_get_n_pages (pixbuf_cache->document));
 748         g_return_if_fail (end_page >= start_page);
 749
 750         /* First, resize the page_range as needed.  We cull old pages
 751          * mercilessly. */
 752         ev_pixbuf_cache_update_range (pixbuf_cache, start_page, end_page);
 753
 754         /* Then, we update the current jobs to see if any of them are the wrong
 755          * size, we remove them if we need to. */
 756         ev_pixbuf_cache_clear_job_sizes (pixbuf_cache, scale);
 757
 758         /* Next, we update the target selection for our pages */
 759         ev_pixbuf_cache_set_selection_list (pixbuf_cache, selection_list);
 760
 761         /* Finally, we add the new jobs for all the sizes that don't have a
 762          * pixbuf */
 763         ev_pixbuf_cache_add_jobs_if_needed (pixbuf_cache, rotation, scale);
 764 }
 765
 766 void
 767 ev_pixbuf_cache_set_inverted_colors (EvPixbufCache *pixbuf_cache,
 768                                      gboolean       inverted_colors)
 769 {
 770         gint i;
 771
 772         if (pixbuf_cache->inverted_colors == inverted_colors)
 773                 return;
 774
 775         pixbuf_cache->inverted_colors = inverted_colors;
 776
 777         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 778                 CacheJobInfo *job_info;
 779
 780                 job_info = pixbuf_cache->prev_job + i;
 781                 if (job_info->surface)
 782                         ev_document_misc_invert_surface (job_info->surface);
 783
 784                 job_info = pixbuf_cache->next_job + i;
 785                 if (job_info->surface)
 786                         ev_document_misc_invert_surface (job_info->surface);
 787         }
 788
 789         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 790                 CacheJobInfo *job_info;
 791
 792                 job_info = pixbuf_cache->job_list + i;
 793                 if (job_info->surface)
 794                         ev_document_misc_invert_surface (job_info->surface);
 795         }
 796 }
 797
 798 cairo_surface_t *
 799 ev_pixbuf_cache_get_surface (EvPixbufCache *pixbuf_cache,
 800                              gint           page)
 801 {
 802         CacheJobInfo *job_info;
 803
 804         job_info = find_job_cache (pixbuf_cache, page);
 805         if (job_info == NULL)
 806                 return NULL;
 807
 808         if (job_info->page_ready)
 809                 return job_info->surface;
 810
 811         /* We don't need to wait for the idle to handle the callback */
 812         if (job_info->job &&
 813             EV_JOB_RENDER (job_info->job)->page_ready) {
 814                 copy_job_page_and_selection_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 815                 g_signal_emit (pixbuf_cache, signals[JOB_FINISHED], 0, job_info->region);
 816         }
 817
 818         return job_info->surface;
 819 }
 820
 821 GList *
 822 ev_pixbuf_cache_get_link_mapping (EvPixbufCache *pixbuf_cache,
 823                                   gint           page)
 824 {
 825         CacheJobInfo *job_info;
 826
 827         job_info = find_job_cache (pixbuf_cache, page);
 828         if (job_info == NULL)
 829                 return NULL;
 830
 831         /* We don't need to wait for the idle to handle the callback */
 832         if (job_info->job &&
 833             EV_JOB (job_info->job)->finished) {
 834                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 835         }
 836
 837         return job_info->link_mapping;
 838 }
 839
 840 GList *
 841 ev_pixbuf_cache_get_image_mapping (EvPixbufCache *pixbuf_cache,
 842                                    gint           page)
 843 {
 844         CacheJobInfo *job_info;
 845
 846         if (!EV_IS_DOCUMENT_IMAGES (pixbuf_cache->document))
 847                 return NULL;
 848
 849         job_info = find_job_cache (pixbuf_cache, page);
 850         if (job_info == NULL)
 851                 return NULL;
 852
 853         /* We don't need to wait for the idle to handle the callback */
 854         if (job_info->job &&
 855             EV_JOB (job_info->job)->finished) {
 856                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 857         }
 858
 859         return job_info->image_mapping;
 860 }
 861
 862 GList *
 863 ev_pixbuf_cache_get_form_field_mapping (EvPixbufCache *pixbuf_cache,
 864                                         gint           page)
 865 {
 866         CacheJobInfo *job_info;
 867
 868         if (!EV_IS_DOCUMENT_FORMS (pixbuf_cache->document))
 869                 return NULL;
 870
 871         job_info = find_job_cache (pixbuf_cache, page);
 872         if (job_info == NULL)
 873                 return NULL;
 874
 875         /* We don't need to wait for the idle to handle the callback */
 876         if (job_info->job &&
 877            EV_JOB (job_info->job)->finished) {
 878                 copy_job_to_job_info (EV_JOB_RENDER(job_info->job), job_info, pixbuf_cache);
 879         }
 880
 881         return job_info->form_field_mapping;
 882 }
 883
 884 GList *
 885 ev_pixbuf_cache_get_annots_mapping (EvPixbufCache *pixbuf_cache,
 886                                     gint           page)
 887 {
 888         CacheJobInfo *job_info;
 889
 890         if (!EV_IS_DOCUMENT_ANNOTATIONS (pixbuf_cache->document))
 891                 return NULL;
 892
 893         job_info = find_job_cache (pixbuf_cache, page);
 894         if (job_info == NULL)
 895                 return NULL;
 896
 897         /* We don't need to wait for the idle to handle the callback */
 898         if (job_info->job &&
 899            EV_JOB (job_info->job)->finished) {
 900                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 901         }
 902
 903         return job_info->annots_mapping;
 904 }
 905
 906 static gboolean
 907 new_selection_surface_needed (EvPixbufCache *pixbuf_cache,
 908                               CacheJobInfo  *job_info,
 909                               gint           page,
 910                               gfloat         scale)
 911 {
 912         if (job_info->selection && job_info->rc) {
 913                 gint width, height;
 914                 gint selection_width, selection_height;
 915
 916                 _get_page_size_for_scale_and_rotation (pixbuf_cache->document,
 917                                                        page, scale, job_info->rc->rotation,
 918                                                        &width, &height);
 919
 920                 selection_width = cairo_image_surface_get_width (job_info->selection);
 921                 selection_height = cairo_image_surface_get_height (job_info->selection);
 922
 923                 if (width != selection_width || height != selection_height)
 924                         return TRUE;
 925         } else {
 926                 if (job_info->points_set)
 927                         return TRUE;
 928         }
 929
 930         return FALSE;
 931 }
 932
 933 static void
 934 clear_selection_if_needed (EvPixbufCache *pixbuf_cache,
 935                            CacheJobInfo  *job_info,
 936                            gint           page,
 937                            gfloat         scale)
 938 {
 939         if (new_selection_surface_needed (pixbuf_cache, job_info, page, scale)) {
 940                 if (job_info->selection)
 941                         cairo_surface_destroy (job_info->selection);
 942                 job_info->selection = NULL;
 943                 job_info->selection_points.x1 = -1;
 944         }
 945 }
 946
 947 GdkRegion *
 948 ev_pixbuf_cache_get_text_mapping (EvPixbufCache *pixbuf_cache,
 949                                   gint           page)
 950 {
 951         CacheJobInfo *job_info;
 952
 953         job_info = find_job_cache (pixbuf_cache, page);
 954         if (job_info == NULL)
 955                 return NULL;
 956
 957         /* We don't need to wait for the idle to handle the callback */
 958         if (job_info->job &&
 959             EV_JOB (job_info->job)->finished) {
 960                 copy_job_to_job_info (EV_JOB_RENDER (job_info->job), job_info, pixbuf_cache);
 961         }
 962
 963         return job_info->text_mapping;
 964 }
 965
 966 /* Clears the cache of jobs and pixbufs.
 967  */
 968 void
 969 ev_pixbuf_cache_clear (EvPixbufCache *pixbuf_cache)
 970 {
 971         int i;
 972
 973         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 974                 dispose_cache_job_info (pixbuf_cache->prev_job + i, pixbuf_cache);
 975                 dispose_cache_job_info (pixbuf_cache->next_job + i, pixbuf_cache);
 976         }
 977
 978         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
 979                 dispose_cache_job_info (pixbuf_cache->job_list + i, pixbuf_cache);
 980         }
 981 }
 982
 983
 984 void
 985 ev_pixbuf_cache_style_changed (EvPixbufCache *pixbuf_cache)
 986 {
 987         gint i;
 988
 989         /* FIXME: doesn't update running jobs. */
 990         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
 991                 CacheJobInfo *job_info;
 992
 993                 job_info = pixbuf_cache->prev_job + i;
 994                 if (job_info->selection) {
 995                         cairo_surface_destroy (job_info->selection);
 996                         job_info->selection = NULL;
 997                 }
 998
 999                 job_info = pixbuf_cache->next_job + i;
1000                 if (job_info->selection) {
1001                         cairo_surface_destroy (job_info->selection);
1002                         job_info->selection = NULL;
1003                 }
1004         }
1005
1006         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
1007                 CacheJobInfo *job_info;
1008
1009                 job_info = pixbuf_cache->job_list + i;
1010                 if (job_info->selection) {
1011                         cairo_surface_destroy (job_info->selection);
1012                         job_info->selection = NULL;
1013                 }
1014         }
1015 }
1016
1017 cairo_surface_t *
1018 ev_pixbuf_cache_get_selection_surface (EvPixbufCache  *pixbuf_cache,
1019                                        gint            page,
1020                                        gfloat          scale,
1021                                        GdkRegion     **region)
1022 {
1023         CacheJobInfo *job_info;
1024
1025         /* the document does not implement the selection interface */
1026         if (!EV_IS_SELECTION (pixbuf_cache->document))
1027                 return NULL;
1028
1029         job_info = find_job_cache (pixbuf_cache, page);
1030         if (job_info == NULL)
1031                 return NULL;
1032
1033         /* No selection on this page */
1034         if (!job_info->points_set)
1035                 return NULL;
1036
1037         /* Create new render context if needed (selection + fast scrolling) */
1038         if (job_info->rc == NULL) {
1039                 EvPage  *ev_page;
1040                 ev_page = ev_document_get_page (pixbuf_cache->document, page);
1041                 job_info->rc = ev_render_context_new (ev_page, 0, scale);
1042                 g_object_unref (ev_page);
1043         }
1044
1045         /* Update the rc */
1046         ev_render_context_set_scale (job_info->rc, scale);
1047
1048         /* If we have a running job, we just return what we have under the
1049          * assumption that it'll be updated later and we can scale it as need
1050          * be */
1051         if (job_info->job && (EV_JOB_RENDER (job_info->job)->flags & EV_RENDER_INCLUDE_SELECTION))
1052                 return job_info->selection;
1053
1054         /* Now, lets see if we need to resize the image.  If we do, we clear the
1055          * old one. */
1056         clear_selection_if_needed (pixbuf_cache, job_info, page, scale);
1057
1058         /* Finally, we see if the two scales are the same, and get a new pixbuf
1059          * if needed.  We do this synchronously for now.  At some point, we
1060          * _should_ be able to get rid of the doc_mutex, so the synchronicity
1061          * doesn't kill us.  Rendering a few glyphs should really be fast.
1062          */
1063         if (ev_rect_cmp (&(job_info->target_points), &(job_info->selection_points))) {
1064                 EvRectangle *old_points;
1065                 GdkColor *text, *base;
1066
1067                 /* we need to get a new selection pixbuf */
1068                 ev_document_doc_mutex_lock ();
1069                 if (job_info->selection_points.x1 < 0) {
1070                         g_assert (job_info->selection == NULL);
1071                         old_points = NULL;
1072                 } else {
1073                         g_assert (job_info->selection != NULL);
1074                         old_points = &(job_info->selection_points);
1075                 }
1076
1077                 if (job_info->selection_region)
1078                         gdk_region_destroy (job_info->selection_region);
1079                 job_info->selection_region =
1080                         ev_selection_get_selection_region (EV_SELECTION (pixbuf_cache->document),
1081                                                            job_info->rc,
1082                                                            job_info->selection_style,
1083                                                            &(job_info->target_points));
1084
1085                 gtk_widget_ensure_style (pixbuf_cache->view);
1086
1087                 get_selection_colors (pixbuf_cache->view, &text, &base);
1088
1089                 ev_selection_render_selection (EV_SELECTION (pixbuf_cache->document),
1090                                                job_info->rc, &(job_info->selection),
1091                                                &(job_info->target_points),
1092                                                old_points,
1093                                                job_info->selection_style,
1094                                                text, base);
1095                 job_info->selection_points = job_info->target_points;
1096                 ev_document_doc_mutex_unlock ();
1097         }
1098         if (region)
1099                 *region = job_info->selection_region;
1100         return job_info->selection;
1101 }
1102
1103 static void
1104 update_job_selection (CacheJobInfo    *job_info,
1105                       EvViewSelection *selection)
1106 {
1107         job_info->points_set = TRUE;
1108         job_info->target_points = selection->rect;
1109         job_info->selection_style = selection->style;
1110 }
1111
1112 static void
1113 clear_job_selection (CacheJobInfo *job_info)
1114 {
1115         job_info->points_set = FALSE;
1116         job_info->selection_points.x1 = -1;
1117
1118         if (job_info->selection) {
1119                 cairo_surface_destroy (job_info->selection);
1120                 job_info->selection = NULL;
1121         }
1122 }
1123
1124 /* This function will reset the selection on pages that no longer have them, and
1125  * will update the target_selection on those that need it.  It will _not_ free
1126  * the previous selection_list -- that's up to caller to do.
1127  */
1128 void
1129 ev_pixbuf_cache_set_selection_list (EvPixbufCache *pixbuf_cache,
1130                                     GList         *selection_list)
1131 {
1132         EvViewSelection *selection;
1133         GList *list = selection_list;
1134         int page;
1135         int i;
1136
1137         g_return_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache));
1138
1139         if (!EV_IS_SELECTION (pixbuf_cache->document))
1140                 return;
1141
1142         /* We check each area to see what needs updating, and what needs freeing; */
1143         page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
1144         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1145                 if (page < 0) {
1146                         page ++;
1147                         continue;
1148                 }
1149
1150                 selection = NULL;
1151                 while (list) {
1152                         if (((EvViewSelection *)list->data)->page == page) {
1153                                 selection = list->data;
1154                                 break;
1155                         } else if (((EvViewSelection *)list->data)->page > page)
1156                                 break;
1157                         list = list->next;
1158                 }
1159
1160                 if (selection)
1161                         update_job_selection (pixbuf_cache->prev_job + i, selection);
1162                 else
1163                         clear_job_selection (pixbuf_cache->prev_job + i);
1164                 page ++;
1165         }
1166
1167         page = pixbuf_cache->start_page;
1168         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
1169                 selection = NULL;
1170                 while (list) {
1171                         if (((EvViewSelection *)list->data)->page == page) {
1172                                 selection = list->data;
1173                                 break;
1174                         } else if (((EvViewSelection *)list->data)->page > page)
1175                                 break;
1176                         list = list->next;
1177                 }
1178
1179                 if (selection)
1180                         update_job_selection (pixbuf_cache->job_list + i, selection);
1181                 else
1182                         clear_job_selection (pixbuf_cache->job_list + i);
1183                 page ++;
1184         }
1185
1186         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1187                 if (page >= ev_document_get_n_pages (pixbuf_cache->document))
1188                         break;
1189
1190                 selection = NULL;
1191                 while (list) {
1192                         if (((EvViewSelection *)list->data)->page == page) {
1193                                 selection = list->data;
1194                                 break;
1195                         } else if (((EvViewSelection *)list->data)->page > page)
1196                                 break;
1197                         list = list->next;
1198                 }
1199
1200                 if (selection)
1201                         update_job_selection (pixbuf_cache->next_job + i, selection);
1202                 else
1203                         clear_job_selection (pixbuf_cache->next_job + i);
1204                 page ++;
1205         }
1206 }
1207
1208
1209 /* Returns what the pixbuf cache thinks is */
1210
1211 GList *
1212 ev_pixbuf_cache_get_selection_list (EvPixbufCache *pixbuf_cache)
1213 {
1214         EvViewSelection *selection;
1215         GList *retval = NULL;
1216         int page;
1217         int i;
1218
1219         g_return_val_if_fail (EV_IS_PIXBUF_CACHE (pixbuf_cache), NULL);
1220
1221         /* We check each area to see what needs updating, and what needs freeing; */
1222         page = pixbuf_cache->start_page - pixbuf_cache->preload_cache_size;
1223         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1224                 if (page < 0) {
1225                         page ++;
1226                         continue;
1227                 }
1228
1229                 if (pixbuf_cache->prev_job[i].selection_points.x1 != -1) {
1230                         selection = g_new0 (EvViewSelection, 1);
1231                         selection->page = page;
1232                         selection->rect = pixbuf_cache->prev_job[i].selection_points;
1233                         if (pixbuf_cache->prev_job[i].selection_region)
1234                                 selection->covered_region = gdk_region_copy (pixbuf_cache->prev_job[i].selection_region);
1235                         retval = g_list_append (retval, selection);
1236                 }
1237
1238                 page ++;
1239         }
1240
1241         page = pixbuf_cache->start_page;
1242         for (i = 0; i < PAGE_CACHE_LEN (pixbuf_cache); i++) {
1243                 if (pixbuf_cache->job_list[i].selection_points.x1 != -1) {
1244                         selection = g_new0 (EvViewSelection, 1);
1245                         selection->page = page;
1246                         selection->rect = pixbuf_cache->job_list[i].selection_points;
1247                         if (pixbuf_cache->job_list[i].selection_region)
1248                                 selection->covered_region = gdk_region_copy (pixbuf_cache->job_list[i].selection_region);
1249                         retval = g_list_append (retval, selection);
1250                 }
1251
1252                 page ++;
1253         }
1254
1255         for (i = 0; i < pixbuf_cache->preload_cache_size; i++) {
1256                 if (page >= ev_document_get_n_pages (pixbuf_cache->document))
1257                         break;
1258
1259                 if (pixbuf_cache->next_job[i].selection_points.x1 != -1) {
1260                         selection = g_new0 (EvViewSelection, 1);
1261                         selection->page = page;
1262                         selection->rect = pixbuf_cache->next_job[i].selection_points;
1263                         if (pixbuf_cache->next_job[i].selection_region)
1264                                 selection->covered_region = gdk_region_copy (pixbuf_cache->next_job[i].selection_region);
1265                         retval = g_list_append (retval, selection);
1266                 }
1267
1268                 page ++;
1269         }
1270
1271         return retval;
1272 }
1273
1274 void
1275 ev_pixbuf_cache_reload_page (EvPixbufCache *pixbuf_cache,
1276                              GdkRegion     *region,
1277                              gint           page,
1278                              gint           rotation,
1279                              gdouble        scale)
1280 {
1281         CacheJobInfo *job_info;
1282         gint width, height;
1283
1284         job_info = find_job_cache (pixbuf_cache, page);
1285         if (job_info == NULL)
1286                 return;
1287
1288         _get_page_size_for_scale_and_rotation (pixbuf_cache->document,
1289                                                page, scale, rotation,
1290                                                &width, &height);
1291         add_job (pixbuf_cache, job_info, region,
1292                  width, height, page, rotation, scale,
1293                  EV_JOB_PRIORITY_URGENT);
1294 }
1295
1296