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 static char *
 332 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 333 {
 334         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 335         PopplerPage *poppler_page;
 336         PopplerRectangle r;
 337         double height;
 338
 339         poppler_page = poppler_document_get_page (pdf_document->document, page);
 340         g_return_val_if_fail (poppler_page != NULL, NULL);
 341
 342         poppler_page_get_size (poppler_page, NULL, &height);
 343         r.x1 = rect->x1;
 344         r.y1 = height - rect->y2;
 345         r.x2 = rect->x2;
 346         r.y2 = height - rect->y1;
 347
 348         g_print ("%f %f %f %f\n", r.x1, r.y1, r.x2, r.y2);
 349
 350         return poppler_page_get_text (poppler_page, &r);
 351 }
 352
 353 static void
 354 pdf_document_document_iface_init (EvDocumentIface *iface)
 355 {
 356         iface->save = pdf_document_save;
 357         iface->load = pdf_document_load;
 358         iface->get_n_pages = pdf_document_get_n_pages;
 359         iface->get_page_size = pdf_document_get_page_size;
 360         iface->get_page_label = pdf_document_get_page_label;
 361         iface->get_links = pdf_document_get_links;
 362         iface->render_pixbuf = pdf_document_render_pixbuf;
 363         iface->get_text = pdf_document_get_text;
 364 };
 365
 366 static void
 367 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 368 {
 369         iface->has_document_security = pdf_document_has_document_security;
 370         iface->set_password = pdf_document_set_password;
 371 }
 372
 373 static gboolean
 374 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 375 {
 376         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 377         PopplerIndexIter *iter;
 378
 379         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 380
 381         iter = poppler_index_iter_new (pdf_document->document);
 382         if (iter == NULL)
 383                 return FALSE;
 384         poppler_index_iter_free (iter);
 385
 386         return TRUE;
 387 }
 388
 389 static EvLink *
 390 ev_link_from_action (PopplerAction *action)
 391 {
 392         EvLink *link;
 393         const char *title;
 394
 395         title = action->any.title;
 396
 397         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 398                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 399         } else if (action->type == POPPLER_ACTION_URI) {
 400                 link = ev_link_new_external (title, action->uri.uri);
 401         } else {
 402                 link = ev_link_new_title (title);
 403         }
 404
 405         return link;
 406 }
 407
 408
 409 static void
 410 build_tree (PdfDocument      *pdf_document,
 411             GtkTreeModel     *model,
 412             GtkTreeIter      *parent,
 413             PopplerIndexIter *iter)
 414 {
 415
 416         do {
 417                 GtkTreeIter tree_iter;
 418                 PopplerIndexIter *child;
 419                 PopplerAction *action;
 420                 EvLink *link;
 421
 422                 action = poppler_index_iter_get_action (iter);
 423                 if (action) {
 424                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 425                         link = ev_link_from_action (action);
 426                         poppler_action_free (action);
 427
 428                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 429                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 430                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 431                                             -1);
 432                         child = poppler_index_iter_get_child (iter);
 433                         if (child)
 434                                 build_tree (pdf_document, model, &tree_iter, child);
 435                         poppler_index_iter_free (child);
 436                 }
 437         } while (poppler_index_iter_next (iter));
 438 }
 439
 440
 441 static GtkTreeModel *
 442 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 443 {
 444         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 445         GtkTreeModel *model = NULL;
 446         PopplerIndexIter *iter;
 447
 448         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 449
 450         iter = poppler_index_iter_new (pdf_document->document);
 451         /* Create the model iff we have items*/
 452         if (iter != NULL) {
 453                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 454                                                              G_TYPE_STRING,
 455                                                              G_TYPE_POINTER);
 456                 build_tree (pdf_document, model, NULL, iter);
 457                 poppler_index_iter_free (iter);
 458         }
 459
 460
 461         return model;
 462 }
 463
 464
 465 static void
 466 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 467 {
 468         iface->has_document_links = pdf_document_links_has_document_links;
 469         iface->get_links_model = pdf_document_links_get_links_model;
 470 }
 471
 472
 473 static GdkPixbuf *
 474 make_thumbnail_for_size (PdfDocument *pdf_document,
 475                          gint         page,
 476                          gint         size,
 477                          gboolean     border)
 478 {
 479         PopplerPage *poppler_page;
 480         GdkPixbuf *pixbuf;
 481         int width, height;
 482         int x_offset, y_offset;
 483         double scale;
 484         gdouble unscaled_width, unscaled_height;
 485
 486         poppler_page = poppler_document_get_page (pdf_document->document, page);
 487
 488         g_return_val_if_fail (poppler_page != NULL, NULL);
 489
 490         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 491         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 492         scale = width / unscaled_width;
 493
 494         if (border) {
 495                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 496                 x_offset = 1;
 497                 y_offset = 1;
 498         } else {
 499                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 500                                          width, height);
 501                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 502                 x_offset = 0;
 503                 y_offset = 0;
 504         }
 505
 506         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 507                                        width, height,
 508                                        scale, pixbuf,
 509                                        x_offset, y_offset);
 510
 511         return pixbuf;
 512 }
 513
 514 static GdkPixbuf *
 515 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 516                                        gint                  page,
 517                                        gint                  size,
 518                                        gboolean              border)
 519 {
 520         PdfDocument *pdf_document;
 521         PopplerPage *poppler_page;
 522         GdkPixbuf *pixbuf;
 523
 524         pdf_document = PDF_DOCUMENT (document_thumbnails);
 525
 526         poppler_page = poppler_document_get_page (pdf_document->document, page);
 527         g_return_val_if_fail (poppler_page != NULL, NULL);
 528
 529         pixbuf = poppler_page_get_thumbnail (poppler_page);
 530         if (pixbuf != NULL) {
 531                 /* The document provides its own thumbnails. */
 532                 if (border) {
 533                         GdkPixbuf *real_pixbuf;
 534
 535                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 536                         g_object_unref (pixbuf);
 537                         pixbuf = real_pixbuf;
 538                 }
 539         } else {
 540                 /* There is no provided thumbnail.  We need to make one. */
 541                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 542         }
 543         return pixbuf;
 544 }
 545
 546 static void
 547 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 548                                         gint                  page,
 549                                         gint                  size,
 550                                         gint                 *width,
 551                                         gint                 *height)
 552 {
 553         PdfDocument *pdf_document;
 554         PopplerPage *poppler_page;
 555         gint has_thumb;
 556
 557         pdf_document = PDF_DOCUMENT (document_thumbnails);
 558         poppler_page = poppler_document_get_page (pdf_document->document, page);
 559
 560         g_return_if_fail (width != NULL);
 561         g_return_if_fail (height != NULL);
 562         g_return_if_fail (poppler_page != NULL);
 563
 564         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 565
 566         if (!has_thumb) {
 567                 double page_width, page_height;
 568
 569                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 570                 if (page_width > page_height) {
 571                         *width = size;
 572                         *height = (int) (size * page_height / page_width);
 573                 } else {
 574                         *width = (int) (size * page_width / page_height);
 575                         *height = size;
 576                 }
 577         }
 578 }
 579
 580 static void
 581 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 582 {
 583         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 584         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 585 }
 586
 587
 588 static gboolean
 589 pdf_document_search_idle_callback (void *data)
 590 {
 591         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 592         PdfDocument *pdf_document = search->document;
 593         int n_pages, changed_page;
 594         GList *matches;
 595         PopplerPage *page;
 596
 597         page = poppler_document_get_page (search->document->document,
 598                                           search->search_page);
 599
 600         g_mutex_lock (EV_DOC_MUTEX);
 601         matches = poppler_page_find_text (page, search->text);
 602         g_mutex_unlock (EV_DOC_MUTEX);
 603
 604         search->pages[search->search_page] = matches;
 605         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 606
 607         changed_page = search->search_page;
 608         search->search_page += 1;
 609         if (search->search_page == n_pages) {
 610                 /* wrap around */
 611                 search->search_page = 0;
 612         }
 613
 614         if (search->search_page != search->start_page) {
 615                 ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 616                                           changed_page);
 617                 return TRUE;
 618         }
 619
 620         /* We're done. */
 621         search->idle = 0; /* will return FALSE to remove */
 622         return FALSE;
 623 }
 624
 625
 626 static PdfDocumentSearch *
 627 pdf_document_search_new (PdfDocument *pdf_document,
 628                          int          start_page,
 629                          const char  *text)
 630 {
 631         PdfDocumentSearch *search;
 632         int n_pages;
 633         int i;
 634
 635         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 636
 637         search = g_new0 (PdfDocumentSearch, 1);
 638
 639         search->text = g_strdup (text);
 640         search->pages = g_new0 (GList *, n_pages);
 641         for (i = 0; i < n_pages; i++) {
 642                 search->pages[i] = NULL;
 643         }
 644
 645         search->document = pdf_document;
 646
 647         /* We add at low priority so the progress bar repaints */
 648         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 649                                         pdf_document_search_idle_callback,
 650                                         search,
 651                                         NULL);
 652
 653         search->start_page = start_page;
 654         search->search_page = start_page;
 655
 656         return search;
 657 }
 658
 659 static void
 660 pdf_document_search_free (PdfDocumentSearch   *search)
 661 {
 662         PdfDocument *pdf_document = search->document;
 663         int n_pages;
 664         int i;
 665
 666         if (search->idle != 0)
 667                 g_source_remove (search->idle);
 668
 669         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 670         for (i = 0; i < n_pages; i++) {
 671                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 672                 g_list_free (search->pages[i]);
 673         }
 674
 675         g_free (search->text);
 676 }
 677
 678 static void
 679 pdf_document_find_begin (EvDocumentFind   *document,
 680                          int               page,
 681                          const char       *search_string,
 682                          gboolean          case_sensitive)
 683 {
 684         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 685
 686         /* FIXME handle case_sensitive (right now XPDF
 687          * code is always case insensitive for ASCII
 688          * and case sensitive for all other languaages)
 689          */
 690
 691         if (pdf_document->search &&
 692             strcmp (search_string, pdf_document->search->text) == 0)
 693                 return;
 694
 695         if (pdf_document->search)
 696                 pdf_document_search_free (pdf_document->search);
 697
 698         pdf_document->search = pdf_document_search_new (pdf_document,
 699                                                         page,
 700                                                         search_string);
 701 }
 702
 703 int
 704 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
 705 {
 706         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 707         int current_page;
 708
 709         if (search) {
 710                 return g_list_length (search->pages[page]);
 711         } else {
 712                 return 0;
 713         }
 714 }
 715
 716 gboolean
 717 pdf_document_find_get_result (EvDocumentFind *document_find,
 718                               int             page,
 719                               int             n_result,
 720                               EvRectangle    *rectangle)
 721 {
 722         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
 723         PdfDocumentSearch *search = pdf_document->search;
 724         PopplerPage *poppler_page;
 725         PopplerRectangle *r;
 726         int current_page;
 727         double height;
 728
 729         if (search == NULL)
 730                 return FALSE;
 731
 732         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
 733                                                   n_result);
 734         if (r == NULL)
 735                 return FALSE;
 736
 737         poppler_page = poppler_document_get_page (pdf_document->document, page);
 738         poppler_page_get_size (poppler_page, NULL, &height);
 739         rectangle->x1 = r->x1;
 740         rectangle->y1 = height - r->y2;
 741         rectangle->x2 = r->x2;
 742         rectangle->y2 = height - r->y1;
 743
 744         return TRUE;
 745 }
 746
 747 int
 748 pdf_document_find_page_has_results (EvDocumentFind *document_find,
 749                                     int             page)
 750 {
 751         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 752
 753         g_return_val_if_fail (search != NULL, FALSE);
 754
 755         return search->pages[page] != NULL;
 756 }
 757
 758 double
 759 pdf_document_find_get_progress (EvDocumentFind *document_find)
 760 {
 761         PdfDocumentSearch *search;
 762         int n_pages, pages_done;
 763
 764         search = PDF_DOCUMENT (document_find)->search;
 765
 766         if (search == NULL) {
 767                 return 0;
 768         }
 769
 770         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
 771         if (search->search_page > search->start_page) {
 772                 pages_done = search->search_page - search->start_page + 1;
 773         } else if (search->search_page == search->start_page) {
 774                 pages_done = n_pages;
 775         } else {
 776                 pages_done = n_pages - search->start_page + search->search_page;
 777         }
 778
 779         return pages_done / (double) n_pages;
 780 }
 781
 782 static void
 783 pdf_document_find_cancel (EvDocumentFind *document)
 784 {
 785         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 786
 787         if (pdf_document->search) {
 788                 pdf_document_search_free (pdf_document->search);
 789                 pdf_document->search = NULL;
 790         }
 791 }
 792
 793 static void
 794 pdf_document_find_iface_init (EvDocumentFindIface *iface)
 795 {
 796         iface->begin = pdf_document_find_begin;
 797         iface->get_n_results = pdf_document_find_get_n_results;
 798         iface->get_result = pdf_document_find_get_result;
 799         iface->page_has_results = pdf_document_find_page_has_results;
 800         iface->get_progress = pdf_document_find_get_progress;
 801         iface->cancel = pdf_document_find_cancel;
 802 }
 803
 804
 805 PdfDocument *
 806 pdf_document_new (void)
 807 {
 808         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
 809 }