pdf/ev-poppler.cc

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* pdfdocument.h: Implementation of EvDocument for PDF
   3  * Copyright (C) 2004, Red Hat, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <math.h>
  21 #include <string.h>
  22 #include <gtk/gtk.h>
  23 #include <poppler.h>
  24 #include <poppler-document.h>
  25 #include <poppler-page.h>
  26
  27 #include "ev-poppler.h"
  28 #include "ev-ps-exporter.h"
  29 #include "ev-document-find.h"
  30 #include "ev-document-misc.h"
  31 #include "ev-document-links.h"
  32 #include "ev-document-security.h"
  33 #include "ev-document-thumbnails.h"
  34
  35
  36 enum {
  37         PROP_0,
  38         PROP_TITLE
  39 };
  40
  41
  42 typedef struct {
  43         PdfDocument *document;
  44         char *text;
  45         GList **pages;
  46         guint idle;
  47         int start_page;
  48         int search_page;
  49 } PdfDocumentSearch;
  50
  51 struct _PdfDocumentClass
  52 {
  53         GObjectClass parent_class;
  54 };
  55
  56 struct _PdfDocument
  57 {
  58         GObject parent_instance;
  59
  60         PopplerDocument *document;
  61         PopplerPSFile *ps_file;
  62         gchar *password;
  63
  64         PdfDocumentSearch *search;
  65 };
  66
  67 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
  68 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
  69 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  70 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
  71 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
  72 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  73 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
  74                                                          gint                       page,
  75                                                          gint                       size,
  76                                                          gint                      *width,
  77                                                          gint                      *height);
  78 static EvLink * ev_link_from_action (PopplerAction *action);
  79
  80
  81 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  82                          {
  83                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  84                                                         pdf_document_document_iface_init);
  85                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  86                                                         pdf_document_security_iface_init);
  87                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  88                                                         pdf_document_document_thumbnails_iface_init);
  89                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  90                                                         pdf_document_document_links_iface_init);
  91                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
  92                                                         pdf_document_find_iface_init);
  93                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
  94                                                         pdf_document_ps_exporter_iface_init);
  95                          });
  96
  97
  98 static void
  99 pdf_document_get_property (GObject *object,
 100                            guint prop_id,
 101                            GValue *value,
 102                            GParamSpec *pspec)
 103 {
 104         PdfDocument *pdf_document = PDF_DOCUMENT (object);
 105
 106         switch (prop_id)
 107         {
 108                 case PROP_TITLE:
 109                         if (pdf_document->document == NULL)
 110                                 g_value_set_string (value, NULL);
 111                         else
 112                                 g_object_get_property (G_OBJECT (pdf_document->document), "title", value);
 113                         break;
 114         }
 115 }
 116
 117 static void
 118 pdf_document_class_init (PdfDocumentClass *klass)
 119 {
 120         GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 121
 122         gobject_class->get_property = pdf_document_get_property;
 123
 124         g_object_class_override_property (gobject_class, PROP_TITLE, "title");
 125 }
 126
 127 static void
 128 pdf_document_init (PdfDocument *pdf_document)
 129 {
 130         pdf_document->password = NULL;
 131 }
 132
 133 static void
 134 convert_error (GError  *poppler_error,
 135                GError **error)
 136 {
 137         if (poppler_error == NULL)
 138                 return;
 139
 140         if (poppler_error->domain == POPPLER_ERROR) {
 141                 /* convert poppler errors into EvDocument errors */
 142                 gint code = EV_DOCUMENT_ERROR_INVALID;
 143                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 144                         code = EV_DOCUMENT_ERROR_INVALID;
 145                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 146                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 147
 148
 149                 g_set_error (error,
 150                              EV_DOCUMENT_ERROR,
 151                              code,
 152                              poppler_error->message,
 153                              NULL);
 154         } else {
 155                 g_propagate_error (error, poppler_error);
 156         }
 157 }
 158
 159
 160 /* EvDocument */
 161 static gboolean
 162 pdf_document_save (EvDocument  *document,
 163                    const char  *uri,
 164                    GError     **error)
 165 {
 166         gboolean retval;
 167         GError *poppler_error = NULL;
 168
 169         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 170                                         uri,
 171                                         &poppler_error);
 172         if (! retval)
 173                 convert_error (poppler_error, error);
 174
 175         return retval;
 176 }
 177
 178 static gboolean
 179 pdf_document_load (EvDocument   *document,
 180                    const char   *uri,
 181                    GError      **error)
 182 {
 183         GError *poppler_error = NULL;
 184         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 185
 186         pdf_document->document =
 187                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 188
 189         if (pdf_document->document == NULL) {
 190                 convert_error (poppler_error, error);
 191                 return FALSE;
 192         }
 193
 194         return TRUE;
 195 }
 196
 197 static int
 198 pdf_document_get_n_pages (EvDocument *document)
 199 {
 200         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 201 }
 202
 203 static void
 204 pdf_document_get_page_size (EvDocument   *document,
 205                             int           page,
 206                             double       *width,
 207                             double       *height)
 208 {
 209         PopplerPage *poppler_page;
 210
 211         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 212                                                   page);
 213
 214         poppler_page_get_size (poppler_page, width, height);
 215 }
 216
 217 static char *
 218 pdf_document_get_page_label (EvDocument *document,
 219                              int         page)
 220 {
 221         PopplerPage *poppler_page;
 222         char *label = NULL;
 223
 224         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 225                                                   page);
 226
 227         g_object_get (poppler_page,
 228                       "label", &label,
 229                       NULL);
 230
 231         return label;
 232 }
 233
 234 static GList *
 235 pdf_document_get_links (EvDocument *document,
 236                         int         page)
 237 {
 238         PdfDocument *pdf_document;
 239         PopplerPage *poppler_page;
 240         GList *retval = NULL;
 241         GList *mapping_list;
 242         GList *list;
 243         double height;
 244
 245         pdf_document = PDF_DOCUMENT (document);
 246         poppler_page = poppler_document_get_page (pdf_document->document,
 247                                                   page);
 248         mapping_list = poppler_page_get_link_mapping (poppler_page);
 249         poppler_page_get_size (poppler_page, NULL, &height);
 250
 251         for (list = mapping_list; list; list = list->next) {
 252                 PopplerLinkMapping *link_mapping;
 253                 EvLinkMapping *ev_link_mapping;
 254
 255                 link_mapping = (PopplerLinkMapping *)list->data;
 256                 ev_link_mapping = g_new (EvLinkMapping, 1);
 257                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 258                 ev_link_mapping->x1 = link_mapping->area.x1;
 259                 ev_link_mapping->x2 = link_mapping->area.x2;
 260                 /* Invert this for X-style coordinates */
 261                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 262                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 263
 264                 retval = g_list_prepend (retval, ev_link_mapping);
 265         }
 266
 267         poppler_page_free_link_mapping (mapping_list);
 268
 269         return g_list_reverse (retval);
 270 }
 271
 272
 273 static GdkPixbuf *
 274 pdf_document_render_pixbuf (EvDocument   *document,
 275                             int           page,
 276                             double        scale)
 277 {
 278         PdfDocument *pdf_document;
 279         PopplerPage *poppler_page;
 280         GdkPixbuf *pixbuf;
 281         double width_points, height_points;
 282         gint width, height;
 283
 284         pdf_document = PDF_DOCUMENT (document);
 285         poppler_page = poppler_document_get_page (pdf_document->document,
 286                                                   page);
 287
 288         poppler_page_get_size (poppler_page, &width_points, &height_points);
 289         width = (int) ceil (width_points * scale);
 290         height = (int) ceil (height_points * scale);
 291
 292         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 293                                  FALSE, 8,
 294                                  width, height);
 295
 296         poppler_page_render_to_pixbuf (poppler_page,
 297                                        0, 0,
 298                                        width, height,
 299                                        scale,
 300                                        pixbuf,
 301                                        0, 0);
 302
 303         return pixbuf;
 304 }
 305
 306 /* EvDocumentSecurity */
 307
 308 static gboolean
 309 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 310 {
 311         /* FIXME: do we really need to have this? */
 312         return FALSE;
 313 }
 314
 315 static void
 316 pdf_document_set_password (EvDocumentSecurity *document_security,
 317                            const char         *password)
 318 {
 319         PdfDocument *document = PDF_DOCUMENT (document_security);
 320
 321         if (document->password)
 322                 g_free (document->password);
 323
 324         document->password = g_strdup (password);
 325 }
 326
 327 static char *
 328 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 329 {
 330         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 331         PopplerPage *poppler_page;
 332         PopplerRectangle r;
 333         double height;
 334
 335         poppler_page = poppler_document_get_page (pdf_document->document, page);
 336         g_return_val_if_fail (poppler_page != NULL, NULL);
 337
 338         poppler_page_get_size (poppler_page, NULL, &height);
 339         r.x1 = rect->x1;
 340         r.y1 = height - rect->y2;
 341         r.x2 = rect->x2;
 342         r.y2 = height - rect->y1;
 343
 344         g_print ("%f %f %f %f\n", r.x1, r.y1, r.x2, r.y2);
 345
 346         return poppler_page_get_text (poppler_page, &r);
 347 }
 348
 349 static void
 350 pdf_document_document_iface_init (EvDocumentIface *iface)
 351 {
 352         iface->save = pdf_document_save;
 353         iface->load = pdf_document_load;
 354         iface->get_n_pages = pdf_document_get_n_pages;
 355         iface->get_page_size = pdf_document_get_page_size;
 356         iface->get_page_label = pdf_document_get_page_label;
 357         iface->get_links = pdf_document_get_links;
 358         iface->render_pixbuf = pdf_document_render_pixbuf;
 359         iface->get_text = pdf_document_get_text;
 360 };
 361
 362 static void
 363 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 364 {
 365         iface->has_document_security = pdf_document_has_document_security;
 366         iface->set_password = pdf_document_set_password;
 367 }
 368
 369 static gboolean
 370 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 371 {
 372         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 373         PopplerIndexIter *iter;
 374
 375         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 376
 377         iter = poppler_index_iter_new (pdf_document->document);
 378         if (iter == NULL)
 379                 return FALSE;
 380         poppler_index_iter_free (iter);
 381
 382         return TRUE;
 383 }
 384
 385 static EvLink *
 386 ev_link_from_action (PopplerAction *action)
 387 {
 388         EvLink *link;
 389         const char *title;
 390
 391         title = action->any.title;
 392
 393         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 394                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 395         } else if (action->type == POPPLER_ACTION_URI) {
 396                 link = ev_link_new_external (title, action->uri.uri);
 397         } else {
 398                 link = ev_link_new_title (title);
 399         }
 400
 401         return link;
 402 }
 403
 404
 405 static void
 406 build_tree (PdfDocument      *pdf_document,
 407             GtkTreeModel     *model,
 408             GtkTreeIter      *parent,
 409             PopplerIndexIter *iter)
 410 {
 411
 412         do {
 413                 GtkTreeIter tree_iter;
 414                 PopplerIndexIter *child;
 415                 PopplerAction *action;
 416                 EvLink *link;
 417
 418                 action = poppler_index_iter_get_action (iter);
 419                 if (action) {
 420                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 421                         link = ev_link_from_action (action);
 422                         poppler_action_free (action);
 423
 424                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 425                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 426                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 427                                             -1);
 428                         child = poppler_index_iter_get_child (iter);
 429                         if (child)
 430                                 build_tree (pdf_document, model, &tree_iter, child);
 431                         poppler_index_iter_free (child);
 432                 }
 433         } while (poppler_index_iter_next (iter));
 434 }
 435
 436
 437 static GtkTreeModel *
 438 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 439 {
 440         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 441         GtkTreeModel *model = NULL;
 442         PopplerIndexIter *iter;
 443
 444         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 445
 446         iter = poppler_index_iter_new (pdf_document->document);
 447         /* Create the model iff we have items*/
 448         if (iter != NULL) {
 449                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 450                                                              G_TYPE_STRING,
 451                                                              G_TYPE_POINTER);
 452                 build_tree (pdf_document, model, NULL, iter);
 453                 poppler_index_iter_free (iter);
 454         }
 455
 456
 457         return model;
 458 }
 459
 460
 461 static void
 462 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 463 {
 464         iface->has_document_links = pdf_document_links_has_document_links;
 465         iface->get_links_model = pdf_document_links_get_links_model;
 466 }
 467
 468
 469 static GdkPixbuf *
 470 make_thumbnail_for_size (PdfDocument *pdf_document,
 471                          gint         page,
 472                          gint         size,
 473                          gboolean     border)
 474 {
 475         PopplerPage *poppler_page;
 476         GdkPixbuf *pixbuf;
 477         int width, height;
 478         int x_offset, y_offset;
 479         double scale;
 480         gdouble unscaled_width, unscaled_height;
 481
 482         poppler_page = poppler_document_get_page (pdf_document->document, page);
 483
 484         g_return_val_if_fail (poppler_page != NULL, NULL);
 485
 486         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 487         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 488         scale = width / unscaled_width;
 489
 490         if (border) {
 491                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 492                 x_offset = 1;
 493                 y_offset = 1;
 494         } else {
 495                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 496                                          width, height);
 497                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 498                 x_offset = 0;
 499                 y_offset = 0;
 500         }
 501
 502         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 503                                        width, height,
 504                                        scale, pixbuf,
 505                                        x_offset, y_offset);
 506
 507         return pixbuf;
 508 }
 509
 510 static GdkPixbuf *
 511 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 512                                        gint                  page,
 513                                        gint                  size,
 514                                        gboolean              border)
 515 {
 516         PdfDocument *pdf_document;
 517         PopplerPage *poppler_page;
 518         GdkPixbuf *pixbuf;
 519
 520         pdf_document = PDF_DOCUMENT (document_thumbnails);
 521
 522         poppler_page = poppler_document_get_page (pdf_document->document, page);
 523         g_return_val_if_fail (poppler_page != NULL, NULL);
 524
 525         pixbuf = poppler_page_get_thumbnail (poppler_page);
 526         if (pixbuf != NULL) {
 527                 /* The document provides its own thumbnails. */
 528                 if (border) {
 529                         GdkPixbuf *real_pixbuf;
 530
 531                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 532                         g_object_unref (pixbuf);
 533                         pixbuf = real_pixbuf;
 534                 }
 535         } else {
 536                 /* There is no provided thumbnail.  We need to make one. */
 537                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 538         }
 539         return pixbuf;
 540 }
 541
 542 static void
 543 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 544                                         gint                  page,
 545                                         gint                  size,
 546                                         gint                 *width,
 547                                         gint                 *height)
 548 {
 549         PdfDocument *pdf_document;
 550         PopplerPage *poppler_page;
 551         gint has_thumb;
 552
 553         pdf_document = PDF_DOCUMENT (document_thumbnails);
 554         poppler_page = poppler_document_get_page (pdf_document->document, page);
 555
 556         g_return_if_fail (width != NULL);
 557         g_return_if_fail (height != NULL);
 558         g_return_if_fail (poppler_page != NULL);
 559
 560         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 561
 562         if (!has_thumb) {
 563                 double page_width, page_height;
 564
 565                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 566                 if (page_width > page_height) {
 567                         *width = size;
 568                         *height = (int) (size * page_height / page_width);
 569                 } else {
 570                         *width = (int) (size * page_width / page_height);
 571                         *height = size;
 572                 }
 573         }
 574 }
 575
 576 static void
 577 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 578 {
 579         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 580         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 581 }
 582
 583
 584 static gboolean
 585 pdf_document_search_idle_callback (void *data)
 586 {
 587         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 588         PdfDocument *pdf_document = search->document;
 589         int n_pages, changed_page;
 590         GList *matches;
 591         PopplerPage *page;
 592
 593         page = poppler_document_get_page (search->document->document,
 594                                           search->search_page);
 595
 596         g_mutex_lock (EV_DOC_MUTEX);
 597         matches = poppler_page_find_text (page, search->text);
 598         g_mutex_unlock (EV_DOC_MUTEX);
 599
 600         search->pages[search->search_page] = matches;
 601         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 602
 603         changed_page = search->search_page;
 604         search->search_page += 1;
 605         if (search->search_page == n_pages) {
 606                 /* wrap around */
 607                 search->search_page = 0;
 608         }
 609
 610         if (search->search_page != search->start_page) {
 611                 ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 612                                           changed_page);
 613                 return TRUE;
 614         }
 615
 616         /* We're done. */
 617         search->idle = 0; /* will return FALSE to remove */
 618         return FALSE;
 619 }
 620
 621
 622 static PdfDocumentSearch *
 623 pdf_document_search_new (PdfDocument *pdf_document,
 624                          int          start_page,
 625                          const char  *text)
 626 {
 627         PdfDocumentSearch *search;
 628         int n_pages;
 629         int i;
 630
 631         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 632
 633         search = g_new0 (PdfDocumentSearch, 1);
 634
 635         search->text = g_strdup (text);
 636         search->pages = g_new0 (GList *, n_pages);
 637         for (i = 0; i < n_pages; i++) {
 638                 search->pages[i] = NULL;
 639         }
 640
 641         search->document = pdf_document;
 642
 643         /* We add at low priority so the progress bar repaints */
 644         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 645                                         pdf_document_search_idle_callback,
 646                                         search,
 647                                         NULL);
 648
 649         search->start_page = start_page;
 650         search->search_page = start_page;
 651
 652         return search;
 653 }
 654
 655 static void
 656 pdf_document_search_free (PdfDocumentSearch   *search)
 657 {
 658         PdfDocument *pdf_document = search->document;
 659         int n_pages;
 660         int i;
 661
 662         if (search->idle != 0)
 663                 g_source_remove (search->idle);
 664
 665         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 666         for (i = 0; i < n_pages; i++) {
 667                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 668                 g_list_free (search->pages[i]);
 669         }
 670
 671         g_free (search->text);
 672 }
 673
 674 static void
 675 pdf_document_find_begin (EvDocumentFind   *document,
 676                          int               page,
 677                          const char       *search_string,
 678                          gboolean          case_sensitive)
 679 {
 680         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 681
 682         /* FIXME handle case_sensitive (right now XPDF
 683          * code is always case insensitive for ASCII
 684          * and case sensitive for all other languaages)
 685          */
 686
 687         if (pdf_document->search &&
 688             strcmp (search_string, pdf_document->search->text) == 0)
 689                 return;
 690
 691         if (pdf_document->search)
 692                 pdf_document_search_free (pdf_document->search);
 693
 694         pdf_document->search = pdf_document_search_new (pdf_document,
 695                                                         page,
 696                                                         search_string);
 697 }
 698
 699 int
 700 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
 701 {
 702         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 703         int current_page;
 704
 705         if (search) {
 706                 return g_list_length (search->pages[page]);
 707         } else {
 708                 return 0;
 709         }
 710 }
 711
 712 gboolean
 713 pdf_document_find_get_result (EvDocumentFind *document_find,
 714                               int             page,
 715                               int             n_result,
 716                               EvRectangle    *rectangle)
 717 {
 718         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
 719         PdfDocumentSearch *search = pdf_document->search;
 720         PopplerPage *poppler_page;
 721         PopplerRectangle *r;
 722         int current_page;
 723         double height;
 724
 725         if (search == NULL)
 726                 return FALSE;
 727
 728         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
 729                                                   n_result);
 730         if (r == NULL)
 731                 return FALSE;
 732
 733         poppler_page = poppler_document_get_page (pdf_document->document, page);
 734         poppler_page_get_size (poppler_page, NULL, &height);
 735         rectangle->x1 = r->x1;
 736         rectangle->y1 = height - r->y2;
 737         rectangle->x2 = r->x2;
 738         rectangle->y2 = height - r->y1;
 739
 740         return TRUE;
 741 }
 742
 743 int
 744 pdf_document_find_page_has_results (EvDocumentFind *document_find,
 745                                     int             page)
 746 {
 747         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 748
 749         g_return_val_if_fail (search != NULL, FALSE);
 750
 751         return search->pages[page] != NULL;
 752 }
 753
 754 double
 755 pdf_document_find_get_progress (EvDocumentFind *document_find)
 756 {
 757         PdfDocumentSearch *search;
 758         int n_pages, pages_done;
 759
 760         search = PDF_DOCUMENT (document_find)->search;
 761
 762         if (search == NULL) {
 763                 return 0;
 764         }
 765
 766         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
 767         if (search->search_page > search->start_page) {
 768                 pages_done = search->search_page - search->start_page + 1;
 769         } else if (search->search_page == search->start_page) {
 770                 pages_done = n_pages;
 771         } else {
 772                 pages_done = n_pages - search->start_page + search->search_page;
 773         }
 774
 775         return pages_done / (double) n_pages;
 776 }
 777
 778 static void
 779 pdf_document_find_cancel (EvDocumentFind *document)
 780 {
 781         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 782
 783         if (pdf_document->search) {
 784                 pdf_document_search_free (pdf_document->search);
 785                 pdf_document->search = NULL;
 786         }
 787 }
 788
 789 static void
 790 pdf_document_find_iface_init (EvDocumentFindIface *iface)
 791 {
 792         iface->begin = pdf_document_find_begin;
 793         iface->get_n_results = pdf_document_find_get_n_results;
 794         iface->get_result = pdf_document_find_get_result;
 795         iface->page_has_results = pdf_document_find_page_has_results;
 796         iface->get_progress = pdf_document_find_get_progress;
 797         iface->cancel = pdf_document_find_cancel;
 798 }
 799
 800 static void
 801 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename)
 802 {
 803         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 804         int n_pages;
 805
 806         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (exporter));
 807         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document,
 808                                                      filename, n_pages);
 809 }
 810
 811 static void
 812 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
 813 {
 814         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 815         PopplerPage *poppler_page;
 816
 817         g_return_if_fail (pdf_document->ps_file != NULL);
 818
 819         poppler_page = poppler_document_get_page (pdf_document->document, page);
 820         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
 821 }
 822
 823 static void
 824 pdf_document_ps_exporter_end (EvPSExporter *exporter)
 825 {
 826         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 827
 828         poppler_ps_file_free (pdf_document->ps_file);
 829         pdf_document->ps_file = NULL;
 830 }
 831
 832 static void
 833 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
 834 {
 835         iface->begin = pdf_document_ps_exporter_begin;
 836         iface->do_page = pdf_document_ps_exporter_do_page;
 837         iface->end = pdf_document_ps_exporter_end;
 838 }
 839
 840 PdfDocument *
 841 pdf_document_new (void)
 842 {
 843         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
 844 }