shell/ev-jobs.c

   1 #include "ev-jobs.h"
   2 #include "ev-job-queue.h"
   3 #include "ev-document-thumbnails.h"
   4 #include "ev-document-links.h"
   5 #include "ev-document-images.h"
   6 #include "ev-document-factory.h"
   7 #include "ev-file-helpers.h"
   8 #include "ev-document-fonts.h"
   9 #include "ev-selection.h"
  10 #include "ev-async-renderer.h"
  11 #include "ev-file-exporter.h"
  12 #include "ev-window.h"
  13
  14 #include <glib/gstdio.h>
  15 #include <unistd.h>
  16 #include <libgnomevfs/gnome-vfs-uri.h>
  17 #include <libgnomevfs/gnome-vfs-utils.h>
  18 #include <libgnomevfs/gnome-vfs-ops.h>
  19
  20 static void ev_job_init                 (EvJob               *job);
  21 static void ev_job_class_init           (EvJobClass          *class);
  22 static void ev_job_links_init           (EvJobLinks          *job);
  23 static void ev_job_links_class_init     (EvJobLinksClass     *class);
  24 static void ev_job_render_init          (EvJobRender         *job);
  25 static void ev_job_render_class_init    (EvJobRenderClass    *class);
  26 static void ev_job_thumbnail_init       (EvJobThumbnail      *job);
  27 static void ev_job_thumbnail_class_init (EvJobThumbnailClass *class);
  28 static void ev_job_load_init            (EvJobLoad           *job);
  29 static void ev_job_load_class_init      (EvJobLoadClass      *class);
  30 static void ev_job_print_init           (EvJobPrint          *job);
  31 static void ev_job_print_class_init     (EvJobPrintClass     *class);
  32
  33 enum
  34 {
  35         FINISHED,
  36         LAST_SIGNAL
  37 };
  38
  39 static guint job_signals[LAST_SIGNAL] = { 0 };
  40
  41 G_DEFINE_TYPE (EvJob, ev_job, G_TYPE_OBJECT)
  42 G_DEFINE_TYPE (EvJobLinks, ev_job_links, EV_TYPE_JOB)
  43 G_DEFINE_TYPE (EvJobRender, ev_job_render, EV_TYPE_JOB)
  44 G_DEFINE_TYPE (EvJobThumbnail, ev_job_thumbnail, EV_TYPE_JOB)
  45 G_DEFINE_TYPE (EvJobFonts, ev_job_fonts, EV_TYPE_JOB)
  46 G_DEFINE_TYPE (EvJobLoad, ev_job_load, EV_TYPE_JOB)
  47 G_DEFINE_TYPE (EvJobPrint, ev_job_print, EV_TYPE_JOB)
  48
  49 static void ev_job_init (EvJob *job) { /* Do Nothing */ }
  50
  51 static void
  52 ev_job_dispose (GObject *object)
  53 {
  54         EvJob *job;
  55
  56         job = EV_JOB (object);
  57
  58         if (job->document) {
  59                 g_object_unref (job->document);
  60                 job->document = NULL;
  61         }
  62
  63         (* G_OBJECT_CLASS (ev_job_parent_class)->dispose) (object);
  64 }
  65
  66 static void
  67 ev_job_class_init (EvJobClass *class)
  68 {
  69         GObjectClass *oclass;
  70
  71         oclass = G_OBJECT_CLASS (class);
  72
  73         oclass->dispose = ev_job_dispose;
  74
  75         job_signals [FINISHED] =
  76                 g_signal_new ("finished",
  77                               EV_TYPE_JOB,
  78                               G_SIGNAL_RUN_LAST,
  79                               G_STRUCT_OFFSET (EvJobClass, finished),
  80                               NULL, NULL,
  81                               g_cclosure_marshal_VOID__VOID,
  82                               G_TYPE_NONE, 0);
  83 }
  84
  85
  86 static void ev_job_links_init (EvJobLinks *job) { /* Do Nothing */ }
  87
  88 static void
  89 ev_job_links_dispose (GObject *object)
  90 {
  91         EvJobLinks *job;
  92
  93         job = EV_JOB_LINKS (object);
  94
  95         if (job->model) {
  96                 g_object_unref (job->model);
  97                 job->model = NULL;
  98         }
  99
 100         (* G_OBJECT_CLASS (ev_job_links_parent_class)->dispose) (object);
 101 }
 102
 103 static void
 104 ev_job_links_class_init (EvJobLinksClass *class)
 105 {
 106         GObjectClass *oclass;
 107
 108         oclass = G_OBJECT_CLASS (class);
 109
 110         oclass->dispose = ev_job_links_dispose;
 111 }
 112
 113
 114 static void ev_job_render_init (EvJobRender *job) { /* Do Nothing */ }
 115
 116 static void
 117 ev_job_render_dispose (GObject *object)
 118 {
 119         EvJobRender *job;
 120
 121         job = EV_JOB_RENDER (object);
 122
 123         if (job->pixbuf) {
 124                 g_object_unref (job->pixbuf);
 125                 job->pixbuf = NULL;
 126         }
 127
 128         if (job->rc) {
 129                 g_object_unref (job->rc);
 130                 job->rc = NULL;
 131         }
 132
 133         if (job->selection) {
 134                 g_object_unref (job->selection);
 135                 job->selection = NULL;
 136         }
 137
 138         if (job->selection_region) {
 139                 gdk_region_destroy (job->selection_region);
 140                 job->selection_region = NULL;
 141         }
 142
 143         (* G_OBJECT_CLASS (ev_job_render_parent_class)->dispose) (object);
 144 }
 145
 146 static void
 147 ev_job_render_class_init (EvJobRenderClass *class)
 148 {
 149         GObjectClass *oclass;
 150
 151         oclass = G_OBJECT_CLASS (class);
 152
 153         oclass->dispose = ev_job_render_dispose;
 154 }
 155
 156 static void ev_job_thumbnail_init (EvJobThumbnail *job) { /* Do Nothing */ }
 157
 158 static void
 159 ev_job_thumbnail_dispose (GObject *object)
 160 {
 161         EvJobThumbnail *job;
 162
 163         job = EV_JOB_THUMBNAIL (object);
 164
 165         if (job->thumbnail) {
 166                 g_object_unref (job->thumbnail);
 167                 job->thumbnail = NULL;
 168         }
 169
 170         (* G_OBJECT_CLASS (ev_job_thumbnail_parent_class)->dispose) (object);
 171 }
 172
 173 static void
 174 ev_job_thumbnail_class_init (EvJobThumbnailClass *class)
 175 {
 176         GObjectClass *oclass;
 177
 178         oclass = G_OBJECT_CLASS (class);
 179
 180         oclass->dispose = ev_job_thumbnail_dispose;
 181 }
 182
 183 static void ev_job_print_init (EvJobPrint *job) { /* Do Nothing */ }
 184
 185 static void
 186 ev_job_print_dispose (GObject *object)
 187 {
 188         EvJobPrint *job;
 189
 190         job = EV_JOB_PRINT (object);
 191
 192         if (job->temp_file) {
 193                 g_unlink (job->temp_file);
 194                 g_free (job->temp_file);
 195                 job->temp_file = NULL;
 196         }
 197
 198         if (job->error) {
 199                 g_error_free (job->error);
 200                 job->error = NULL;
 201         }
 202
 203         if (job->ranges) {
 204                 g_free (job->ranges);
 205                 job->ranges = NULL;
 206                 job->n_ranges = 0;
 207         }
 208
 209         (* G_OBJECT_CLASS (ev_job_print_parent_class)->dispose) (object);
 210 }
 211
 212 static void
 213 ev_job_print_class_init (EvJobPrintClass *class)
 214 {
 215         GObjectClass *oclass;
 216
 217         oclass = G_OBJECT_CLASS (class);
 218
 219         oclass->dispose = ev_job_print_dispose;
 220 }
 221
 222 /* Public functions */
 223 void
 224 ev_job_finished (EvJob *job)
 225 {
 226         g_return_if_fail (EV_IS_JOB (job));
 227
 228         g_signal_emit (job, job_signals[FINISHED], 0);
 229 }
 230
 231 EvJob *
 232 ev_job_links_new (EvDocument *document)
 233 {
 234         EvJob *job;
 235
 236         job = g_object_new (EV_TYPE_JOB_LINKS, NULL);
 237         job->document = g_object_ref (document);
 238
 239         return job;
 240 }
 241
 242 void
 243 ev_job_links_run (EvJobLinks *job)
 244 {
 245         g_return_if_fail (EV_IS_JOB_LINKS (job));
 246
 247         ev_document_doc_mutex_lock ();
 248         job->model = ev_document_links_get_links_model (EV_DOCUMENT_LINKS (EV_JOB (job)->document));
 249         EV_JOB (job)->finished = TRUE;
 250         ev_document_doc_mutex_unlock ();
 251 }
 252
 253
 254 EvJob *
 255 ev_job_render_new (EvDocument      *document,
 256                    EvRenderContext *rc,
 257                    gint             width,
 258                    gint             height,
 259                    EvRectangle     *selection_points,
 260                    GdkColor        *text,
 261                    GdkColor        *base,
 262                    gboolean         include_links,
 263                    gboolean         include_images,
 264                    gboolean         include_text,
 265                    gboolean         include_selection)
 266 {
 267         EvJobRender *job;
 268
 269         g_return_val_if_fail (EV_IS_RENDER_CONTEXT (rc), NULL);
 270         if (include_selection)
 271                 g_return_val_if_fail (selection_points != NULL, NULL);
 272
 273         job = g_object_new (EV_TYPE_JOB_RENDER, NULL);
 274
 275         EV_JOB (job)->document = g_object_ref (document);
 276         job->rc = g_object_ref (rc);
 277         job->target_width = width;
 278         job->target_height = height;
 279         job->text = *text;
 280         job->base = *base;
 281         job->include_links = include_links;
 282         job->include_images = include_images;
 283         job->include_text = include_text;
 284         job->include_selection = include_selection;
 285
 286         if (include_selection)
 287                 job->selection_points = *selection_points;
 288
 289         if (EV_IS_ASYNC_RENDERER (document)) {
 290                 EV_JOB (job)->async = TRUE;
 291         }
 292
 293         return EV_JOB (job);
 294 }
 295
 296 static void
 297 render_finished_cb (EvDocument *document, GdkPixbuf *pixbuf, EvJobRender *job)
 298 {
 299         g_signal_handlers_disconnect_by_func (EV_JOB (job)->document,
 300                                               render_finished_cb, job);
 301
 302         EV_JOB (job)->finished = TRUE;
 303         job->pixbuf = g_object_ref (pixbuf);
 304         ev_job_finished (EV_JOB (job));
 305 }
 306
 307 void
 308 ev_job_render_run (EvJobRender *job)
 309 {
 310         g_return_if_fail (EV_IS_JOB_RENDER (job));
 311
 312         ev_document_doc_mutex_lock ();
 313
 314         if (EV_JOB (job)->async) {
 315                 EvAsyncRenderer *renderer = EV_ASYNC_RENDERER (EV_JOB (job)->document);
 316                 ev_async_renderer_render_pixbuf (renderer, job->rc->page, job->rc->scale,
 317                                                  job->rc->rotation);
 318                 g_signal_connect (EV_JOB (job)->document, "render_finished",
 319                                   G_CALLBACK (render_finished_cb), job);
 320         } else {
 321                 ev_document_fc_mutex_lock ();
 322
 323                 job->pixbuf = ev_document_render_pixbuf (EV_JOB (job)->document, job->rc);
 324                 if (job->include_links && EV_IS_DOCUMENT_LINKS (EV_JOB (job)->document))
 325                         job->link_mapping =
 326                                 ev_document_links_get_links (EV_DOCUMENT_LINKS (EV_JOB (job)->document),
 327                                                              job->rc->page);
 328                 if (job->include_images && EV_IS_DOCUMENT_IMAGES (EV_JOB (job)->document))
 329                         job->image_mapping =
 330                                 ev_document_images_get_images (EV_DOCUMENT_IMAGES (EV_JOB (job)->document),
 331                                                                job->rc->page);
 332                 if (job->include_text && EV_IS_SELECTION (EV_JOB (job)->document))
 333                         job->text_mapping =
 334                                 ev_selection_get_selection_map (EV_SELECTION (EV_JOB (job)->document),
 335                                                                 job->rc);
 336                 if (job->include_selection && EV_IS_SELECTION (EV_JOB (job)->document)) {
 337                         ev_selection_render_selection (EV_SELECTION (EV_JOB (job)->document),
 338                                                        job->rc,
 339                                                        &(job->selection),
 340                                                        &(job->selection_points),
 341                                                        NULL,
 342                                                        &(job->text), &(job->base));
 343                         job->selection_region =
 344                                 ev_selection_get_selection_region (EV_SELECTION (EV_JOB (job)->document),
 345                                                                    job->rc,
 346                                                                    &(job->selection_points));
 347                 }
 348
 349                 ev_document_fc_mutex_unlock ();
 350                 EV_JOB (job)->finished = TRUE;
 351         }
 352
 353         ev_document_doc_mutex_unlock ();
 354 }
 355
 356 EvJob *
 357 ev_job_thumbnail_new (EvDocument   *document,
 358                       gint          page,
 359                       int           rotation,
 360                       gint          requested_width)
 361 {
 362         EvJobThumbnail *job;
 363
 364         job = g_object_new (EV_TYPE_JOB_THUMBNAIL, NULL);
 365
 366         EV_JOB (job)->document = g_object_ref (document);
 367         job->page = page;
 368         job->rotation = rotation;
 369         job->requested_width = requested_width;
 370
 371         return EV_JOB (job);
 372 }
 373
 374 void
 375 ev_job_thumbnail_run (EvJobThumbnail *job)
 376 {
 377         g_return_if_fail (EV_IS_JOB_THUMBNAIL (job));
 378
 379         ev_document_doc_mutex_lock ();
 380
 381         job->thumbnail =
 382                 ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (EV_JOB (job)->document),
 383                                                       job->page,
 384                                                       job->rotation,
 385                                                       job->requested_width,
 386                                                       TRUE);
 387         EV_JOB (job)->finished = TRUE;
 388
 389         ev_document_doc_mutex_unlock ();
 390 }
 391
 392 static void ev_job_fonts_init (EvJobFonts *job) { /* Do Nothing */ }
 393
 394 static void ev_job_fonts_class_init (EvJobFontsClass *class) { /* Do Nothing */ }
 395
 396 EvJob *
 397 ev_job_fonts_new (EvDocument *document)
 398 {
 399         EvJobFonts *job;
 400
 401         job = g_object_new (EV_TYPE_JOB_FONTS, NULL);
 402
 403         EV_JOB (job)->document = g_object_ref (document);
 404
 405         return EV_JOB (job);
 406 }
 407
 408 void
 409 ev_job_fonts_run (EvJobFonts *job)
 410 {
 411         EvDocumentFonts *fonts;
 412
 413         g_return_if_fail (EV_IS_JOB_FONTS (job));
 414
 415         ev_document_doc_mutex_lock ();
 416
 417         fonts = EV_DOCUMENT_FONTS (EV_JOB (job)->document);
 418         ev_document_fc_mutex_lock ();
 419         job->scan_completed = !ev_document_fonts_scan (fonts, 20);
 420         ev_document_fc_mutex_unlock ();
 421
 422         EV_JOB (job)->finished = TRUE;
 423
 424         ev_document_doc_mutex_unlock ();
 425 }
 426
 427 static void ev_job_load_init (EvJobLoad *job) { /* Do Nothing */ }
 428
 429 static void
 430 ev_job_load_dispose (GObject *object)
 431 {
 432         EvJobLoad *job = EV_JOB_LOAD (object);
 433
 434         if (job->uri) {
 435                 g_free (job->uri);
 436                 job->uri = NULL;
 437         }
 438
 439         if (job->error) {
 440                 g_error_free (job->error);
 441                 job->error = NULL;
 442         }
 443
 444         if (job->dest) {
 445                 g_object_unref (job->dest);
 446                 job->dest = NULL;
 447         }
 448
 449         (* G_OBJECT_CLASS (ev_job_load_parent_class)->dispose) (object);
 450 }
 451
 452 static void
 453 ev_job_load_class_init (EvJobLoadClass *class)
 454 {
 455         GObjectClass *oclass;
 456
 457         oclass = G_OBJECT_CLASS (class);
 458
 459         oclass->dispose = ev_job_load_dispose;
 460 }
 461
 462
 463 EvJob *
 464 ev_job_load_new (const gchar *uri, EvLinkDest *dest, EvWindowRunMode mode)
 465 {
 466         EvJobLoad *job;
 467
 468         job = g_object_new (EV_TYPE_JOB_LOAD, NULL);
 469
 470         job->uri = g_strdup (uri);
 471         if (dest)
 472                 job->dest = g_object_ref (dest);
 473
 474         job->mode = mode;
 475
 476         return EV_JOB (job);
 477 }
 478
 479 void
 480 ev_job_load_set_uri (EvJobLoad *job, const gchar *uri)
 481 {
 482         if (job->uri)
 483                 g_free (job->uri);
 484         job->uri = g_strdup (uri);
 485 }
 486
 487 void
 488 ev_job_load_run (EvJobLoad *job)
 489 {
 490         g_return_if_fail (EV_IS_JOB_LOAD (job));
 491
 492         if (job->error) {
 493                 g_error_free (job->error);
 494                 job->error = NULL;
 495         }
 496
 497         ev_document_fc_mutex_lock ();
 498
 499         /* This job may already have a document even if the job didn't complete
 500            because, e.g., a password is required - if so, just reload rather than
 501            creating a new instance */
 502         if (EV_JOB (job)->document) {
 503                 ev_document_load (EV_JOB (job)->document,
 504                                   job->uri,
 505                                   &job->error);
 506         } else {
 507                 EV_JOB(job)->document =
 508                         ev_document_factory_get_document (job->uri,
 509                                                           &job->error);
 510         }
 511
 512         ev_document_fc_mutex_unlock ();
 513         EV_JOB (job)->finished = TRUE;
 514 }
 515
 516 EvJob *
 517 ev_job_print_new (EvDocument    *document,
 518                   const gchar   *format,
 519                   gdouble        width,
 520                   gdouble        height,
 521                   EvPrintRange  *ranges,
 522                   gint           n_ranges,
 523                   EvPrintPageSet page_set,
 524                   gint           copies,
 525                   gdouble        collate,
 526                   gdouble        reverse)
 527 {
 528         EvJobPrint *job;
 529
 530         job = g_object_new (EV_TYPE_JOB_PRINT, NULL);
 531
 532         EV_JOB (job)->document = g_object_ref (document);
 533
 534         job->format = format;
 535
 536         job->temp_file = NULL;
 537         job->error = NULL;
 538
 539         job->width = width;
 540         job->height = height;
 541
 542         job->ranges = ranges;
 543         job->n_ranges = n_ranges;
 544
 545         job->page_set = page_set;
 546
 547         job->copies = copies;
 548         job->collate = collate;
 549         job->reverse = reverse;
 550
 551         return EV_JOB (job);
 552 }
 553
 554 static gint
 555 ev_print_job_get_first_page (EvJobPrint *job)
 556 {
 557         gint i;
 558         gint first_page = G_MAXINT;
 559
 560         if (job->n_ranges == 0)
 561                 return 0;
 562
 563         for (i = 0; i < job->n_ranges; i++) {
 564                 if (job->ranges[i].start < first_page)
 565                         first_page = job->ranges[i].start;
 566         }
 567
 568         return MAX (0, first_page);
 569 }
 570
 571 static gint
 572 ev_print_job_get_last_page (EvJobPrint *job)
 573 {
 574         gint i;
 575         gint last_page = G_MININT;
 576         gint max_page;
 577
 578         max_page = ev_document_get_n_pages (EV_JOB (job)->document) - 1;
 579
 580         if (job->n_ranges == 0)
 581                 return max_page;
 582
 583         for (i = 0; i < job->n_ranges; i++) {
 584                 if (job->ranges[i].end > last_page)
 585                         last_page = job->ranges[i].end;
 586         }
 587
 588         return MIN (max_page, last_page);
 589 }
 590
 591 static gboolean
 592 ev_print_job_print_page_in_range (EvJobPrint *job,
 593                                   gint        page)
 594 {
 595         gint i;
 596
 597         for (i = 0; i < job->n_ranges; i++) {
 598                 if (page >= job->ranges[i].start &&
 599                     page <= job->ranges[i].end)
 600                         return TRUE;
 601         }
 602
 603         return FALSE;
 604 }
 605
 606 static gboolean
 607 ev_print_job_print_page_in_set (EvJobPrint *job,
 608                                 gint        page)
 609 {
 610         switch (job->page_set) {
 611                 case EV_PRINT_PAGE_SET_EVEN:
 612                         return page % 2 == 0;
 613                 case EV_PRINT_PAGE_SET_ODD:
 614                         return page % 2 != 0;
 615                 case EV_PRINT_PAGE_SET_ALL:
 616                         return TRUE;
 617         }
 618
 619         return FALSE;
 620 }
 621
 622 static void
 623 ev_job_print_do_page (EvJobPrint *job, gint page)
 624 {
 625         EvDocument      *document = EV_JOB (job)->document;
 626         EvRenderContext *rc;
 627
 628         rc = ev_render_context_new (0, page, 1.0);
 629         ev_file_exporter_do_page (EV_FILE_EXPORTER (document), rc);
 630         g_object_unref (rc);
 631 }
 632
 633 void
 634 ev_job_print_run (EvJobPrint *job)
 635 {
 636         EvDocument *document = EV_JOB (job)->document;
 637         gint        fd;
 638         gint        last_page;
 639         gint        first_page;
 640         gint        i;
 641         gchar      *filename;
 642
 643         g_return_if_fail (EV_IS_JOB_PRINT (job));
 644
 645         if (job->temp_file)
 646                 g_free (job->temp_file);
 647         job->temp_file = NULL;
 648
 649         if (job->error)
 650                 g_error_free (job->error);
 651         job->error = NULL;
 652
 653         filename = g_strdup_printf ("evince_print.%s.XXXXXX", job->format);
 654         fd = g_file_open_tmp (filename, &job->temp_file, &job->error);
 655         g_free (filename);
 656         if (fd <= -1) {
 657                 EV_JOB (job)->finished = TRUE;
 658                 return;
 659         }
 660
 661         first_page = ev_print_job_get_first_page (job);
 662         last_page = ev_print_job_get_last_page (job);
 663
 664         ev_document_doc_mutex_lock ();
 665         ev_file_exporter_begin (EV_FILE_EXPORTER (document),
 666                                 g_ascii_strcasecmp (job->format, "pdf") == 0 ?
 667                                 EV_FILE_FORMAT_PDF : EV_FILE_FORMAT_PS,
 668                                 job->temp_file,
 669                                 MIN (first_page, last_page),
 670                                 MAX (first_page, last_page),
 671                                 job->width, job->height, FALSE);
 672         ev_document_doc_mutex_unlock ();
 673
 674         for (i = 0; i < job->copies; i++) {
 675                 gint page, step;
 676
 677                 step = job->reverse ? -1 : 1;
 678                 page = job->reverse ? last_page : first_page;
 679
 680                 while ((job->reverse && (page >= first_page)) ||
 681                        (!job->reverse && (page <= last_page))) {
 682                         gint n_pages = 1;
 683                         gint j;
 684
 685                         if (job->n_ranges > 0 &&
 686                             !ev_print_job_print_page_in_range (job, page)) {
 687                                 page += step;
 688                                 continue;
 689                         }
 690
 691                         if (!ev_print_job_print_page_in_set (job, page + 1)) {
 692                                 page += step;
 693                                 continue;
 694                         }
 695
 696                         if (job->collate)
 697                                 n_pages = job->copies;
 698
 699                         for (j = 0; j < n_pages; j++) {
 700                                 ev_document_doc_mutex_lock ();
 701                                 ev_job_print_do_page (job, page);
 702                                 ev_document_doc_mutex_unlock ();
 703                         }
 704
 705                         page += step;
 706                 }
 707
 708                 if (job->collate)
 709                         break;
 710         }
 711
 712         ev_document_doc_mutex_lock ();
 713         ev_file_exporter_end (EV_FILE_EXPORTER (document));
 714         ev_document_doc_mutex_unlock ();
 715
 716         close (fd);
 717
 718         EV_JOB (job)->finished = TRUE;
 719 }