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-factory.h"
   6 #include "ev-file-helpers.h"
   7 #include "ev-document-fonts.h"
   8 #include "ev-selection.h"
   9 #include "ev-async-renderer.h"
  10 #include "ev-ps-exporter.h"
  11 #include "ev-window.h"
  12
  13 #include <glib/gstdio.h>
  14 #include <unistd.h>
  15 #include <libgnomevfs/gnome-vfs-uri.h>
  16 #include <libgnomevfs/gnome-vfs-utils.h>
  17 #include <libgnomevfs/gnome-vfs-ops.h>
  18 #include <libgnomevfs/gnome-vfs-xfer.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_xfer_init            (EvJobXfer           *job);
  29 static void ev_job_xfer_class_init      (EvJobXferClass      *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 (EvJobXfer, ev_job_xfer, 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_text,
 264                    gboolean         include_selection)
 265 {
 266         EvJobRender *job;
 267
 268         g_return_val_if_fail (EV_IS_RENDER_CONTEXT (rc), NULL);
 269         if (include_selection)
 270                 g_return_val_if_fail (selection_points != NULL, NULL);
 271
 272         job = g_object_new (EV_TYPE_JOB_RENDER, NULL);
 273
 274         EV_JOB (job)->document = g_object_ref (document);
 275         job->rc = g_object_ref (rc);
 276         job->target_width = width;
 277         job->target_height = height;
 278         job->text = *text;
 279         job->base = *base;
 280         job->include_links = include_links;
 281         job->include_text = include_text;
 282         job->include_selection = include_selection;
 283
 284         if (include_selection)
 285                 job->selection_points = *selection_points;
 286
 287         if (EV_IS_ASYNC_RENDERER (document)) {
 288                 EV_JOB (job)->async = TRUE;
 289         }
 290
 291         return EV_JOB (job);
 292 }
 293
 294 static void
 295 render_finished_cb (EvDocument *document, GdkPixbuf *pixbuf, EvJobRender *job)
 296 {
 297         g_signal_handlers_disconnect_by_func (EV_JOB (job)->document,
 298                                               render_finished_cb, job);
 299
 300         EV_JOB (job)->finished = TRUE;
 301         job->pixbuf = g_object_ref (pixbuf);
 302         ev_job_finished (EV_JOB (job));
 303 }
 304
 305 void
 306 ev_job_render_run (EvJobRender *job)
 307 {
 308         g_return_if_fail (EV_IS_JOB_RENDER (job));
 309
 310         ev_document_doc_mutex_lock ();
 311
 312         if (EV_JOB (job)->async) {
 313                 EvAsyncRenderer *renderer = EV_ASYNC_RENDERER (EV_JOB (job)->document);
 314                 ev_async_renderer_render_pixbuf (renderer, job->rc->page, job->rc->scale,
 315                                                  job->rc->rotation);
 316                 g_signal_connect (EV_JOB (job)->document, "render_finished",
 317                                   G_CALLBACK (render_finished_cb), job);
 318         } else {
 319                 job->pixbuf = ev_document_render_pixbuf (EV_JOB (job)->document, job->rc);
 320                 if (job->include_links && EV_IS_DOCUMENT_LINKS (EV_JOB (job)->document))
 321                         job->link_mapping =
 322                                 ev_document_links_get_links (EV_DOCUMENT_LINKS (EV_JOB (job)->document),
 323                                                              job->rc->page);
 324                 if (job->include_text && EV_IS_SELECTION (EV_JOB (job)->document))
 325                         job->text_mapping =
 326                                 ev_selection_get_selection_map (EV_SELECTION (EV_JOB (job)->document),
 327                                                                 job->rc);
 328                 if (job->include_selection && EV_IS_SELECTION (EV_JOB (job)->document)) {
 329                         ev_selection_render_selection (EV_SELECTION (EV_JOB (job)->document),
 330                                                        job->rc,
 331                                                        &(job->selection),
 332                                                        &(job->selection_points),
 333                                                        NULL,
 334                                                        &(job->text), &(job->base));
 335                         job->selection_region =
 336                                 ev_selection_get_selection_region (EV_SELECTION (EV_JOB (job)->document),
 337                                                                    job->rc,
 338                                                                    &(job->selection_points));
 339                 }
 340
 341                 EV_JOB (job)->finished = TRUE;
 342         }
 343
 344         ev_document_doc_mutex_unlock ();
 345 }
 346
 347 EvJob *
 348 ev_job_thumbnail_new (EvDocument   *document,
 349                       gint          page,
 350                       int           rotation,
 351                       gint          requested_width)
 352 {
 353         EvJobThumbnail *job;
 354
 355         job = g_object_new (EV_TYPE_JOB_THUMBNAIL, NULL);
 356
 357         EV_JOB (job)->document = g_object_ref (document);
 358         job->page = page;
 359         job->rotation = rotation;
 360         job->requested_width = requested_width;
 361
 362         return EV_JOB (job);
 363 }
 364
 365 void
 366 ev_job_thumbnail_run (EvJobThumbnail *job)
 367 {
 368         g_return_if_fail (EV_IS_JOB_THUMBNAIL (job));
 369
 370         ev_document_doc_mutex_lock ();
 371
 372         job->thumbnail =
 373                 ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (EV_JOB (job)->document),
 374                                                       job->page,
 375                                                       job->rotation,
 376                                                       job->requested_width,
 377                                                       TRUE);
 378         EV_JOB (job)->finished = TRUE;
 379
 380         ev_document_doc_mutex_unlock ();
 381 }
 382
 383 static void ev_job_fonts_init (EvJobFonts *job) { /* Do Nothing */ }
 384
 385 static void ev_job_fonts_class_init (EvJobFontsClass *class) { /* Do Nothing */ }
 386
 387 EvJob *
 388 ev_job_fonts_new (EvDocument *document)
 389 {
 390         EvJobFonts *job;
 391
 392         job = g_object_new (EV_TYPE_JOB_FONTS, NULL);
 393
 394         EV_JOB (job)->document = g_object_ref (document);
 395
 396         return EV_JOB (job);
 397 }
 398
 399 void
 400 ev_job_fonts_run (EvJobFonts *job)
 401 {
 402         EvDocumentFonts *fonts;
 403
 404         g_return_if_fail (EV_IS_JOB_FONTS (job));
 405
 406         ev_document_doc_mutex_lock ();
 407
 408         fonts = EV_DOCUMENT_FONTS (EV_JOB (job)->document);
 409         job->scan_completed = !ev_document_fonts_scan (fonts, 20);
 410
 411         EV_JOB (job)->finished = TRUE;
 412
 413         ev_document_doc_mutex_unlock ();
 414 }
 415
 416 static void ev_job_xfer_init (EvJobXfer *job) { /* Do Nothing */ }
 417
 418 static void
 419 ev_job_xfer_dispose (GObject *object)
 420 {
 421         EvJobXfer *job = EV_JOB_XFER (object);
 422
 423         if (job->uri) {
 424                 g_free (job->uri);
 425                 job->uri = NULL;
 426         }
 427
 428         if (job->local_uri) {
 429                 g_free (job->local_uri);
 430                 job->local_uri = NULL;
 431         }
 432
 433         if (job->error) {
 434                 g_error_free (job->error);
 435                 job->error = NULL;
 436         }
 437
 438         if (job->dest) {
 439                 g_object_unref (job->dest);
 440                 job->dest = NULL;
 441         }
 442
 443         (* G_OBJECT_CLASS (ev_job_xfer_parent_class)->dispose) (object);
 444 }
 445
 446 static void
 447 ev_job_xfer_class_init (EvJobXferClass *class)
 448 {
 449         GObjectClass *oclass;
 450
 451         oclass = G_OBJECT_CLASS (class);
 452
 453         oclass->dispose = ev_job_xfer_dispose;
 454 }
 455
 456
 457 EvJob *
 458 ev_job_xfer_new (const gchar *uri, EvLinkDest *dest, EvWindowRunMode mode)
 459 {
 460         EvJobXfer *job;
 461
 462         job = g_object_new (EV_TYPE_JOB_XFER, NULL);
 463
 464         job->uri = g_strdup (uri);
 465         if (dest)
 466                 job->dest = g_object_ref (dest);
 467
 468         job->mode = mode;
 469
 470         return EV_JOB (job);
 471 }
 472
 473 void
 474 ev_job_xfer_run (EvJobXfer *job)
 475 {
 476         GnomeVFSURI *source_uri;
 477         GnomeVFSURI *target_uri;
 478
 479         g_return_if_fail (EV_IS_JOB_XFER (job));
 480
 481         if (job->error) {
 482                 g_error_free (job->error);
 483                 job->error = NULL;
 484         }
 485
 486         /* This job may already have a document even if the job didn't complete
 487            because, e.g., a password is required - if so, just reload rather than
 488            creating a new instance */
 489         if (EV_JOB (job)->document) {
 490                 ev_document_load (EV_JOB (job)->document,
 491                                   job->local_uri ? job->local_uri : job->uri,
 492                                   &job->error);
 493                 EV_JOB (job)->finished = TRUE;
 494                 return;
 495         }
 496
 497         source_uri = gnome_vfs_uri_new (job->uri);
 498         if (!gnome_vfs_uri_is_local (source_uri) && !job->local_uri) {
 499                 char *tmp_name;
 500                 char *base_name;
 501
 502                 /* We'd like to keep extension of source uri since
 503                  * it helps to resolve some mime types, say cbz */
 504
 505                 tmp_name = ev_tmp_filename ();
 506                 base_name = gnome_vfs_uri_extract_short_name (source_uri);
 507                 job->local_uri = g_strconcat ("file:", tmp_name, "-", base_name, NULL);
 508                 g_free (base_name);
 509                 g_free (tmp_name);
 510
 511                 target_uri = gnome_vfs_uri_new (job->local_uri);
 512
 513                 gnome_vfs_xfer_uri (source_uri, target_uri,
 514                                     GNOME_VFS_XFER_DEFAULT | GNOME_VFS_XFER_FOLLOW_LINKS,
 515                                     GNOME_VFS_XFER_ERROR_MODE_ABORT,
 516                                     GNOME_VFS_XFER_OVERWRITE_MODE_REPLACE,
 517                                     NULL,
 518                                     job);
 519                 gnome_vfs_uri_unref (target_uri);
 520         }
 521         gnome_vfs_uri_unref (source_uri);
 522
 523         EV_JOB(job)->document = ev_document_factory_get_document (job->local_uri ? job->local_uri : job->uri, &job->error);
 524         EV_JOB (job)->finished = TRUE;
 525
 526         return;
 527 }
 528
 529 EvJob *
 530 ev_job_print_new (EvDocument   *document,
 531                   EvPrintRange *ranges,
 532                   gint          n_ranges,
 533                   gdouble       width,
 534                   gdouble       height)
 535 {
 536         EvJobPrint *job;
 537
 538         job = g_object_new (EV_TYPE_JOB_PRINT, NULL);
 539
 540         EV_JOB (job)->document = g_object_ref (document);
 541
 542         job->temp_file = NULL;
 543         job->error = NULL;
 544
 545         job->ranges = ranges;
 546         job->n_ranges = n_ranges;
 547
 548         job->width = width;
 549         job->height = height;
 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 (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 void
 607 ev_job_print_run (EvJobPrint *job)
 608 {
 609         EvDocument *document = EV_JOB (job)->document;
 610         gint        fd;
 611         gint        last_page;
 612         gint        first_page;
 613         gint        i;
 614
 615         g_return_if_fail (EV_IS_JOB_PRINT (job));
 616
 617         if (job->temp_file)
 618                 g_free (job->temp_file);
 619         job->temp_file = NULL;
 620
 621         if (job->error)
 622                 g_error_free (job->error);
 623         job->error = NULL;
 624
 625         fd = g_file_open_tmp ("evince_print.ps.XXXXXX", &job->temp_file, &job->error);
 626         if (fd <= -1) {
 627                 EV_JOB (job)->finished = TRUE;
 628                 return;
 629         }
 630
 631         first_page = ev_print_job_get_first_page (job);
 632         last_page = ev_print_job_get_last_page (job);
 633
 634         ev_document_doc_mutex_lock ();
 635         ev_ps_exporter_begin (EV_PS_EXPORTER (document),
 636                               job->temp_file,
 637                               MIN (first_page, last_page),
 638                               MAX (first_page, last_page),
 639                               job->width, job->height, FALSE);
 640         ev_document_doc_mutex_unlock ();
 641
 642         for (i = first_page; i <= last_page; i++) {
 643                 EvRenderContext *rc;
 644
 645                 if (job->n_ranges > 0 &&
 646                     !ev_print_job_print_page (job, i))
 647                         continue;
 648
 649                 rc = ev_render_context_new (0, i, 1.0);
 650
 651                 ev_document_doc_mutex_lock ();
 652                 ev_ps_exporter_do_page (EV_PS_EXPORTER (document), rc);
 653                 ev_document_doc_mutex_unlock ();
 654
 655                 g_object_unref (rc);
 656         }
 657
 658         ev_document_doc_mutex_lock ();
 659         ev_ps_exporter_end (EV_PS_EXPORTER (document));
 660         ev_document_doc_mutex_unlock ();
 661
 662         close (fd);
 663
 664         EV_JOB (job)->finished = TRUE;
 665 }