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 typedef struct {
  36         PdfDocument *document;
  37         char *text;
  38         GList **pages;
  39         guint idle;
  40         int start_page;
  41         int search_page;
  42 } PdfDocumentSearch;
  43
  44 struct _PdfDocumentClass
  45 {
  46         GObjectClass parent_class;
  47 };
  48
  49 struct _PdfDocument
  50 {
  51         GObject parent_instance;
  52
  53         PopplerDocument *document;
  54         PopplerPSFile *ps_file;
  55         gchar *password;
  56
  57         PdfDocumentSearch *search;
  58 };
  59
  60 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
  61 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
  62 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  63 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
  64 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
  65 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  66 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
  67                                                          gint                       page,
  68                                                          gint                       size,
  69                                                          gint                      *width,
  70                                                          gint                      *height);
  71 static EvLink * ev_link_from_action (PopplerAction *action);
  72
  73
  74 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  75                          {
  76                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  77                                                         pdf_document_document_iface_init);
  78                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  79                                                         pdf_document_security_iface_init);
  80                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  81                                                         pdf_document_document_thumbnails_iface_init);
  82                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  83                                                         pdf_document_document_links_iface_init);
  84                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
  85                                                         pdf_document_find_iface_init);
  86                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
  87                                                         pdf_document_ps_exporter_iface_init);
  88                          });
  89
  90 static void
  91 pdf_document_dispose (GObject *object)
  92 {
  93         PdfDocument *pdf_document = PDF_DOCUMENT(object);
  94
  95         if (pdf_document->document) {
  96                 g_object_unref (pdf_document->document);
  97         }
  98 }
  99
 100 static void
 101 pdf_document_class_init (PdfDocumentClass *klass)
 102 {
 103         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
 104
 105         g_object_class->dispose = pdf_document_dispose;
 106 }
 107
 108 static void
 109 pdf_document_init (PdfDocument *pdf_document)
 110 {
 111         pdf_document->password = NULL;
 112 }
 113
 114 static void
 115 convert_error (GError  *poppler_error,
 116                GError **error)
 117 {
 118         if (poppler_error == NULL)
 119                 return;
 120
 121         if (poppler_error->domain == POPPLER_ERROR) {
 122                 /* convert poppler errors into EvDocument errors */
 123                 gint code = EV_DOCUMENT_ERROR_INVALID;
 124                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 125                         code = EV_DOCUMENT_ERROR_INVALID;
 126                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 127                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 128
 129
 130                 g_set_error (error,
 131                              EV_DOCUMENT_ERROR,
 132                              code,
 133                              poppler_error->message,
 134                              NULL);
 135         } else {
 136                 g_propagate_error (error, poppler_error);
 137         }
 138 }
 139
 140
 141 /* EvDocument */
 142 static gboolean
 143 pdf_document_save (EvDocument  *document,
 144                    const char  *uri,
 145                    GError     **error)
 146 {
 147         gboolean retval;
 148         GError *poppler_error = NULL;
 149
 150         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 151                                         uri,
 152                                         &poppler_error);
 153         if (! retval)
 154                 convert_error (poppler_error, error);
 155
 156         return retval;
 157 }
 158
 159 static gboolean
 160 pdf_document_load (EvDocument   *document,
 161                    const char   *uri,
 162                    GError      **error)
 163 {
 164         GError *poppler_error = NULL;
 165         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 166
 167         pdf_document->document =
 168                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 169
 170         if (pdf_document->document == NULL) {
 171                 convert_error (poppler_error, error);
 172                 return FALSE;
 173         }
 174
 175         return TRUE;
 176 }
 177
 178 static int
 179 pdf_document_get_n_pages (EvDocument *document)
 180 {
 181         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 182 }
 183
 184 static void
 185 pdf_document_get_page_size (EvDocument   *document,
 186                             int           page,
 187                             double       *width,
 188                             double       *height)
 189 {
 190         PopplerPage *poppler_page;
 191
 192         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 193                                                   page);
 194
 195         poppler_page_get_size (poppler_page, width, height);
 196 }
 197
 198 static char *
 199 pdf_document_get_page_label (EvDocument *document,
 200                              int         page)
 201 {
 202         PopplerPage *poppler_page;
 203         char *label = NULL;
 204
 205         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 206                                                   page);
 207
 208         g_object_get (G_OBJECT (poppler_page),
 209                       "label", &label,
 210                       NULL);
 211
 212         return label;
 213 }
 214
 215 static GList *
 216 pdf_document_get_links (EvDocument *document,
 217                         int         page)
 218 {
 219         PdfDocument *pdf_document;
 220         PopplerPage *poppler_page;
 221         GList *retval = NULL;
 222         GList *mapping_list;
 223         GList *list;
 224         double height;
 225
 226         pdf_document = PDF_DOCUMENT (document);
 227         poppler_page = poppler_document_get_page (pdf_document->document,
 228                                                   page);
 229         mapping_list = poppler_page_get_link_mapping (poppler_page);
 230         poppler_page_get_size (poppler_page, NULL, &height);
 231
 232         for (list = mapping_list; list; list = list->next) {
 233                 PopplerLinkMapping *link_mapping;
 234                 EvLinkMapping *ev_link_mapping;
 235
 236                 link_mapping = (PopplerLinkMapping *)list->data;
 237                 ev_link_mapping = g_new (EvLinkMapping, 1);
 238                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 239                 ev_link_mapping->x1 = link_mapping->area.x1;
 240                 ev_link_mapping->x2 = link_mapping->area.x2;
 241                 /* Invert this for X-style coordinates */
 242                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 243                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 244
 245                 retval = g_list_prepend (retval, ev_link_mapping);
 246         }
 247
 248         poppler_page_free_link_mapping (mapping_list);
 249
 250         return g_list_reverse (retval);
 251 }
 252
 253
 254 static GdkPixbuf *
 255 pdf_document_render_pixbuf (EvDocument   *document,
 256                             int           page,
 257                             double        scale)
 258 {
 259         PdfDocument *pdf_document;
 260         PopplerPage *poppler_page;
 261         GdkPixbuf *pixbuf;
 262         double width_points, height_points;
 263         gint width, height;
 264
 265         pdf_document = PDF_DOCUMENT (document);
 266         poppler_page = poppler_document_get_page (pdf_document->document,
 267                                                   page);
 268
 269         poppler_page_get_size (poppler_page, &width_points, &height_points);
 270         width = (int) ((width_points * scale) + 0.5);
 271         height = (int) ((height_points * scale) + 0.5);
 272
 273         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 274                                  FALSE, 8,
 275                                  width, height);
 276
 277         poppler_page_render_to_pixbuf (poppler_page,
 278                                        0, 0,
 279                                        width, height,
 280                                        scale,
 281                                        pixbuf,
 282                                        0, 0);
 283
 284         return pixbuf;
 285 }
 286
 287 /* EvDocumentSecurity */
 288
 289 static gboolean
 290 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 291 {
 292         /* FIXME: do we really need to have this? */
 293         return FALSE;
 294 }
 295
 296 static void
 297 pdf_document_set_password (EvDocumentSecurity *document_security,
 298                            const char         *password)
 299 {
 300         PdfDocument *document = PDF_DOCUMENT (document_security);
 301
 302         if (document->password)
 303                 g_free (document->password);
 304
 305         document->password = g_strdup (password);
 306 }
 307
 308 static gboolean
 309 pdf_document_can_get_text (EvDocument *document)
 310 {
 311         return TRUE;
 312 }
 313
 314 static EvDocumentInfo *
 315 pdf_document_get_info (EvDocument *document)
 316 {
 317         EvDocumentInfo *info;
 318         PopplerPageLayout layout;
 319         PopplerPageMode mode;
 320         PopplerViewerPreferences view_prefs;
 321         PopplerPermissions permissions;
 322
 323         info = g_new0 (EvDocumentInfo, 1);
 324
 325         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 326                             EV_DOCUMENT_INFO_FORMAT |
 327                             EV_DOCUMENT_INFO_AUTHOR |
 328                             EV_DOCUMENT_INFO_SUBJECT |
 329                             EV_DOCUMENT_INFO_KEYWORDS |
 330                             EV_DOCUMENT_INFO_LAYOUT |
 331                             EV_DOCUMENT_INFO_START_MODE |
 332                             /* Missing EV_DOCUMENT_INFO_CREATION_DATE | */
 333                             EV_DOCUMENT_INFO_PERMISSIONS |
 334                             EV_DOCUMENT_INFO_UI_HINTS;
 335
 336
 337         g_object_get (PDF_DOCUMENT (document)->document,
 338                       "title", &(info->title),
 339                       "format", &(info->format),
 340                       "author", &(info->author),
 341                       "subject", &(info->subject),
 342                       "keywords", &(info->keywords),
 343                       "page-mode", &mode,
 344                       "page-layout", &layout,
 345                       "viewer-preferences", &view_prefs,
 346                       "permissions", &permissions,
 347                       NULL);
 348
 349         switch (layout) {
 350                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 351                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 352                         break;
 353                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 354                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 355                         break;
 356                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 357                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 358                         break;
 359                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 360                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 361                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 362                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 363                         break;
 364                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 365                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 366                         break;
 367                 default:
 368                         break;
 369         }
 370
 371         switch (mode) {
 372                 case POPPLER_PAGE_MODE_NONE:
 373                         info->mode = EV_DOCUMENT_MODE_NONE;
 374                         break;
 375                 case POPPLER_PAGE_MODE_USE_THUMBS:
 376                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 377                         break;
 378                 case POPPLER_PAGE_MODE_USE_OC:
 379                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 380                         break;
 381                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 382                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 383                         break;
 384                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 385                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 386                 default:
 387                         break;
 388         }
 389
 390         info->ui_hints = 0;
 391         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 392                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 393         }
 394         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 395                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 396         }
 397         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 398                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 399         }
 400         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 401                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 402         }
 403         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 404                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 405         }
 406         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 407                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 408         }
 409         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 410                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 411         }
 412
 413         info->permissions = 0;
 414         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 415                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 416         }
 417         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 418                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 419         }
 420         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 421                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 422         }
 423         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 424                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 425         }
 426         return info;
 427 }
 428
 429 static char *
 430 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 431 {
 432         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 433         PopplerPage *poppler_page;
 434         PopplerRectangle r;
 435         double height;
 436
 437         poppler_page = poppler_document_get_page (pdf_document->document, page);
 438         g_return_val_if_fail (poppler_page != NULL, NULL);
 439
 440         poppler_page_get_size (poppler_page, NULL, &height);
 441         r.x1 = rect->x1;
 442         r.y1 = height - rect->y2;
 443         r.x2 = rect->x2;
 444         r.y2 = height - rect->y1;
 445
 446         return poppler_page_get_text (poppler_page, &r);
 447 }
 448
 449 static void
 450 pdf_document_document_iface_init (EvDocumentIface *iface)
 451 {
 452         iface->save = pdf_document_save;
 453         iface->load = pdf_document_load;
 454         iface->get_n_pages = pdf_document_get_n_pages;
 455         iface->get_page_size = pdf_document_get_page_size;
 456         iface->get_page_label = pdf_document_get_page_label;
 457         iface->get_links = pdf_document_get_links;
 458         iface->render_pixbuf = pdf_document_render_pixbuf;
 459         iface->get_text = pdf_document_get_text;
 460         iface->can_get_text = pdf_document_can_get_text;
 461         iface->get_info = pdf_document_get_info;
 462 };
 463
 464 static void
 465 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 466 {
 467         iface->has_document_security = pdf_document_has_document_security;
 468         iface->set_password = pdf_document_set_password;
 469 }
 470
 471 static gboolean
 472 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 473 {
 474         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 475         PopplerIndexIter *iter;
 476
 477         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 478
 479         iter = poppler_index_iter_new (pdf_document->document);
 480         if (iter == NULL)
 481                 return FALSE;
 482         poppler_index_iter_free (iter);
 483
 484         return TRUE;
 485 }
 486
 487 static EvLink *
 488 ev_link_from_action (PopplerAction *action)
 489 {
 490         EvLink *link;
 491         const char *title;
 492
 493         title = action->any.title;
 494
 495         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 496                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 497         } else if (action->type == POPPLER_ACTION_URI) {
 498                 link = ev_link_new_external (title, action->uri.uri);
 499         } else {
 500                 link = ev_link_new_title (title);
 501         }
 502
 503         return link;
 504 }
 505
 506
 507 static void
 508 build_tree (PdfDocument      *pdf_document,
 509             GtkTreeModel     *model,
 510             GtkTreeIter      *parent,
 511             PopplerIndexIter *iter)
 512 {
 513
 514         do {
 515                 GtkTreeIter tree_iter;
 516                 PopplerIndexIter *child;
 517                 PopplerAction *action;
 518                 EvLink *link;
 519
 520                 action = poppler_index_iter_get_action (iter);
 521                 if (action) {
 522                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 523                         link = ev_link_from_action (action);
 524                         poppler_action_free (action);
 525
 526                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 527                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 528                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 529                                             -1);
 530                         child = poppler_index_iter_get_child (iter);
 531                         if (child)
 532                                 build_tree (pdf_document, model, &tree_iter, child);
 533                         poppler_index_iter_free (child);
 534                 }
 535         } while (poppler_index_iter_next (iter));
 536 }
 537
 538
 539 static GtkTreeModel *
 540 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 541 {
 542         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 543         GtkTreeModel *model = NULL;
 544         PopplerIndexIter *iter;
 545
 546         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 547
 548         iter = poppler_index_iter_new (pdf_document->document);
 549         /* Create the model iff we have items*/
 550         if (iter != NULL) {
 551                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 552                                                              G_TYPE_STRING,
 553                                                              G_TYPE_POINTER);
 554                 build_tree (pdf_document, model, NULL, iter);
 555                 poppler_index_iter_free (iter);
 556         }
 557
 558
 559         return model;
 560 }
 561
 562
 563 static void
 564 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 565 {
 566         iface->has_document_links = pdf_document_links_has_document_links;
 567         iface->get_links_model = pdf_document_links_get_links_model;
 568 }
 569
 570
 571 static GdkPixbuf *
 572 make_thumbnail_for_size (PdfDocument *pdf_document,
 573                          gint         page,
 574                          gint         size,
 575                          gboolean     border)
 576 {
 577         PopplerPage *poppler_page;
 578         GdkPixbuf *pixbuf;
 579         int width, height;
 580         int x_offset, y_offset;
 581         double scale;
 582         gdouble unscaled_width, unscaled_height;
 583
 584         poppler_page = poppler_document_get_page (pdf_document->document, page);
 585
 586         g_return_val_if_fail (poppler_page != NULL, NULL);
 587
 588         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 589         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 590         scale = width / unscaled_width;
 591
 592         if (border) {
 593                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 594                 x_offset = 1;
 595                 y_offset = 1;
 596         } else {
 597                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 598                                          width, height);
 599                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 600                 x_offset = 0;
 601                 y_offset = 0;
 602         }
 603
 604         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 605                                        width, height,
 606                                        scale, pixbuf,
 607                                        x_offset, y_offset);
 608
 609         return pixbuf;
 610 }
 611
 612 static GdkPixbuf *
 613 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 614                                        gint                  page,
 615                                        gint                  size,
 616                                        gboolean              border)
 617 {
 618         PdfDocument *pdf_document;
 619         PopplerPage *poppler_page;
 620         GdkPixbuf *pixbuf;
 621
 622         pdf_document = PDF_DOCUMENT (document_thumbnails);
 623
 624         poppler_page = poppler_document_get_page (pdf_document->document, page);
 625         g_return_val_if_fail (poppler_page != NULL, NULL);
 626
 627         pixbuf = poppler_page_get_thumbnail (poppler_page);
 628         if (pixbuf != NULL) {
 629                 /* The document provides its own thumbnails. */
 630                 if (border) {
 631                         GdkPixbuf *real_pixbuf;
 632
 633                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 634                         g_object_unref (pixbuf);
 635                         pixbuf = real_pixbuf;
 636                 }
 637         } else {
 638                 /* There is no provided thumbnail.  We need to make one. */
 639                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 640         }
 641         return pixbuf;
 642 }
 643
 644 static void
 645 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 646                                         gint                  page,
 647                                         gint                  size,
 648                                         gint                 *width,
 649                                         gint                 *height)
 650 {
 651         PdfDocument *pdf_document;
 652         PopplerPage *poppler_page;
 653         gint has_thumb;
 654
 655         pdf_document = PDF_DOCUMENT (document_thumbnails);
 656         poppler_page = poppler_document_get_page (pdf_document->document, page);
 657
 658         g_return_if_fail (width != NULL);
 659         g_return_if_fail (height != NULL);
 660         g_return_if_fail (poppler_page != NULL);
 661
 662         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 663
 664         if (!has_thumb) {
 665                 double page_width, page_height;
 666
 667                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 668                 if (page_width > page_height) {
 669                         *width = size;
 670                         *height = (int) (size * page_height / page_width);
 671                 } else {
 672                         *width = (int) (size * page_width / page_height);
 673                         *height = size;
 674                 }
 675         }
 676 }
 677
 678 static void
 679 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 680 {
 681         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 682         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 683 }
 684
 685
 686 static gboolean
 687 pdf_document_search_idle_callback (void *data)
 688 {
 689         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 690         PdfDocument *pdf_document = search->document;
 691         int n_pages;
 692         GList *matches;
 693         PopplerPage *page;
 694
 695         page = poppler_document_get_page (search->document->document,
 696                                           search->search_page);
 697
 698         ev_document_doc_mutex_lock ();
 699         matches = poppler_page_find_text (page, search->text);
 700         ev_document_doc_mutex_unlock ();
 701
 702         search->pages[search->search_page] = matches;
 703         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 704                                   search->search_page);
 705
 706         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 707         search->search_page += 1;
 708         if (search->search_page == n_pages) {
 709                 /* wrap around */
 710                 search->search_page = 0;
 711         }
 712
 713         if (search->search_page != search->start_page) {
 714                 return TRUE;
 715         }
 716
 717         /* We're done. */
 718         search->idle = 0; /* will return FALSE to remove */
 719         return FALSE;
 720 }
 721
 722
 723 static PdfDocumentSearch *
 724 pdf_document_search_new (PdfDocument *pdf_document,
 725                          int          start_page,
 726                          const char  *text)
 727 {
 728         PdfDocumentSearch *search;
 729         int n_pages;
 730         int i;
 731
 732         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 733
 734         search = g_new0 (PdfDocumentSearch, 1);
 735
 736         search->text = g_strdup (text);
 737         search->pages = g_new0 (GList *, n_pages);
 738         for (i = 0; i < n_pages; i++) {
 739                 search->pages[i] = NULL;
 740         }
 741
 742         search->document = pdf_document;
 743
 744         /* We add at low priority so the progress bar repaints */
 745         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 746                                         pdf_document_search_idle_callback,
 747                                         search,
 748                                         NULL);
 749
 750         search->start_page = start_page;
 751         search->search_page = start_page;
 752
 753         return search;
 754 }
 755
 756 static void
 757 pdf_document_search_free (PdfDocumentSearch   *search)
 758 {
 759         PdfDocument *pdf_document = search->document;
 760         int n_pages;
 761         int i;
 762
 763         if (search->idle != 0)
 764                 g_source_remove (search->idle);
 765
 766         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 767         for (i = 0; i < n_pages; i++) {
 768                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 769                 g_list_free (search->pages[i]);
 770         }
 771
 772         g_free (search->text);
 773 }
 774
 775 static void
 776 pdf_document_find_begin (EvDocumentFind   *document,
 777                          int               page,
 778                          const char       *search_string,
 779                          gboolean          case_sensitive)
 780 {
 781         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 782
 783         /* FIXME handle case_sensitive (right now XPDF
 784          * code is always case insensitive for ASCII
 785          * and case sensitive for all other languaages)
 786          */
 787
 788         if (pdf_document->search &&
 789             strcmp (search_string, pdf_document->search->text) == 0)
 790                 return;
 791
 792         if (pdf_document->search)
 793                 pdf_document_search_free (pdf_document->search);
 794
 795         pdf_document->search = pdf_document_search_new (pdf_document,
 796                                                         page,
 797                                                         search_string);
 798 }
 799
 800 int
 801 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
 802 {
 803         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 804
 805         if (search) {
 806                 return g_list_length (search->pages[page]);
 807         } else {
 808                 return 0;
 809         }
 810 }
 811
 812 gboolean
 813 pdf_document_find_get_result (EvDocumentFind *document_find,
 814                               int             page,
 815                               int             n_result,
 816                               EvRectangle    *rectangle)
 817 {
 818         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
 819         PdfDocumentSearch *search = pdf_document->search;
 820         PopplerPage *poppler_page;
 821         PopplerRectangle *r;
 822         double height;
 823
 824         if (search == NULL)
 825                 return FALSE;
 826
 827         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
 828                                                   n_result);
 829         if (r == NULL)
 830                 return FALSE;
 831
 832         poppler_page = poppler_document_get_page (pdf_document->document, page);
 833         poppler_page_get_size (poppler_page, NULL, &height);
 834         rectangle->x1 = r->x1;
 835         rectangle->y1 = height - r->y2;
 836         rectangle->x2 = r->x2;
 837         rectangle->y2 = height - r->y1;
 838
 839         return TRUE;
 840 }
 841
 842 int
 843 pdf_document_find_page_has_results (EvDocumentFind *document_find,
 844                                     int             page)
 845 {
 846         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 847
 848         g_return_val_if_fail (search != NULL, FALSE);
 849
 850         return search->pages[page] != NULL;
 851 }
 852
 853 double
 854 pdf_document_find_get_progress (EvDocumentFind *document_find)
 855 {
 856         PdfDocumentSearch *search;
 857         int n_pages, pages_done;
 858
 859         search = PDF_DOCUMENT (document_find)->search;
 860
 861         if (search == NULL) {
 862                 return 0;
 863         }
 864
 865         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
 866         if (search->search_page > search->start_page) {
 867                 pages_done = search->search_page - search->start_page + 1;
 868         } else if (search->search_page == search->start_page) {
 869                 pages_done = n_pages;
 870         } else {
 871                 pages_done = n_pages - search->start_page + search->search_page;
 872         }
 873
 874         return pages_done / (double) n_pages;
 875 }
 876
 877 static void
 878 pdf_document_find_cancel (EvDocumentFind *document)
 879 {
 880         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 881
 882         if (pdf_document->search) {
 883                 pdf_document_search_free (pdf_document->search);
 884                 pdf_document->search = NULL;
 885         }
 886 }
 887
 888 static void
 889 pdf_document_find_iface_init (EvDocumentFindIface *iface)
 890 {
 891         iface->begin = pdf_document_find_begin;
 892         iface->get_n_results = pdf_document_find_get_n_results;
 893         iface->get_result = pdf_document_find_get_result;
 894         iface->page_has_results = pdf_document_find_page_has_results;
 895         iface->get_progress = pdf_document_find_get_progress;
 896         iface->cancel = pdf_document_find_cancel;
 897 }
 898
 899 static void
 900 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
 901                                 int first_page, int last_page)
 902 {
 903         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 904
 905         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
 906                                                      first_page,
 907                                                      last_page - first_page + 1);
 908 }
 909
 910 static void
 911 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
 912 {
 913         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 914         PopplerPage *poppler_page;
 915
 916         g_return_if_fail (pdf_document->ps_file != NULL);
 917
 918         poppler_page = poppler_document_get_page (pdf_document->document, page);
 919         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
 920 }
 921
 922 static void
 923 pdf_document_ps_exporter_end (EvPSExporter *exporter)
 924 {
 925         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 926
 927         poppler_ps_file_free (pdf_document->ps_file);
 928         pdf_document->ps_file = NULL;
 929 }
 930
 931 static void
 932 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
 933 {
 934         iface->begin = pdf_document_ps_exporter_begin;
 935         iface->do_page = pdf_document_ps_exporter_do_page;
 936         iface->end = pdf_document_ps_exporter_end;
 937 }
 938
 939 PdfDocument *
 940 pdf_document_new (void)
 941 {
 942         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
 943 }