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