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 #include <glib/gi18n.h>
  27
  28 #include "ev-poppler.h"
  29 #include "ev-ps-exporter.h"
  30 #include "ev-document-find.h"
  31 #include "ev-document-misc.h"
  32 #include "ev-document-links.h"
  33 #include "ev-document-security.h"
  34 #include "ev-document-thumbnails.h"
  35
  36 typedef struct {
  37         PdfDocument *document;
  38         char *text;
  39         GList **pages;
  40         guint idle;
  41         int start_page;
  42         int search_page;
  43 } PdfDocumentSearch;
  44
  45 struct _PdfDocumentClass
  46 {
  47         GObjectClass parent_class;
  48 };
  49
  50 struct _PdfDocument
  51 {
  52         GObject parent_instance;
  53
  54         PopplerDocument *document;
  55         PopplerPSFile *ps_file;
  56         gchar *password;
  57
  58         PdfDocumentSearch *search;
  59 };
  60
  61 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
  62 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
  63 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  64 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
  65 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
  66 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  67 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
  68                                                          gint                       page,
  69                                                          gint                       size,
  70                                                          gint                      *width,
  71                                                          gint                      *height);
  72 static EvLink * ev_link_from_action (PopplerAction *action);
  73
  74
  75 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  76                          {
  77                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  78                                                         pdf_document_document_iface_init);
  79                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  80                                                         pdf_document_security_iface_init);
  81                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  82                                                         pdf_document_document_thumbnails_iface_init);
  83                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  84                                                         pdf_document_document_links_iface_init);
  85                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
  86                                                         pdf_document_find_iface_init);
  87                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
  88                                                         pdf_document_ps_exporter_iface_init);
  89                          });
  90
  91 static void
  92 pdf_document_dispose (GObject *object)
  93 {
  94         PdfDocument *pdf_document = PDF_DOCUMENT(object);
  95
  96         if (pdf_document->document) {
  97                 g_object_unref (pdf_document->document);
  98         }
  99 }
 100
 101 static void
 102 pdf_document_class_init (PdfDocumentClass *klass)
 103 {
 104         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
 105
 106         g_object_class->dispose = pdf_document_dispose;
 107 }
 108
 109 static void
 110 pdf_document_init (PdfDocument *pdf_document)
 111 {
 112         pdf_document->password = NULL;
 113 }
 114
 115 static void
 116 convert_error (GError  *poppler_error,
 117                GError **error)
 118 {
 119         if (poppler_error == NULL)
 120                 return;
 121
 122         if (poppler_error->domain == POPPLER_ERROR) {
 123                 /* convert poppler errors into EvDocument errors */
 124                 gint code = EV_DOCUMENT_ERROR_INVALID;
 125                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 126                         code = EV_DOCUMENT_ERROR_INVALID;
 127                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 128                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 129
 130
 131                 g_set_error (error,
 132                              EV_DOCUMENT_ERROR,
 133                              code,
 134                              poppler_error->message,
 135                              NULL);
 136         } else {
 137                 g_propagate_error (error, poppler_error);
 138         }
 139 }
 140
 141
 142 /* EvDocument */
 143 static gboolean
 144 pdf_document_save (EvDocument  *document,
 145                    const char  *uri,
 146                    GError     **error)
 147 {
 148         gboolean retval;
 149         GError *poppler_error = NULL;
 150
 151         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 152                                         uri,
 153                                         &poppler_error);
 154         if (! retval)
 155                 convert_error (poppler_error, error);
 156
 157         return retval;
 158 }
 159
 160 static gboolean
 161 pdf_document_load (EvDocument   *document,
 162                    const char   *uri,
 163                    GError      **error)
 164 {
 165         GError *poppler_error = NULL;
 166         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 167
 168         pdf_document->document =
 169                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 170
 171         if (pdf_document->document == NULL) {
 172                 convert_error (poppler_error, error);
 173                 return FALSE;
 174         }
 175
 176         return TRUE;
 177 }
 178
 179 static int
 180 pdf_document_get_n_pages (EvDocument *document)
 181 {
 182         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 183 }
 184
 185 static void
 186 pdf_document_get_page_size (EvDocument   *document,
 187                             int           page,
 188                             double       *width,
 189                             double       *height)
 190 {
 191         PopplerPage *poppler_page;
 192
 193         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 194                                                   page);
 195
 196         poppler_page_get_size (poppler_page, width, height);
 197 }
 198
 199 static char *
 200 pdf_document_get_page_label (EvDocument *document,
 201                              int         page)
 202 {
 203         PopplerPage *poppler_page;
 204         char *label = NULL;
 205
 206         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 207                                                   page);
 208
 209         g_object_get (G_OBJECT (poppler_page),
 210                       "label", &label,
 211                       NULL);
 212
 213         return label;
 214 }
 215
 216 static GList *
 217 pdf_document_get_links (EvDocument *document,
 218                         int         page)
 219 {
 220         PdfDocument *pdf_document;
 221         PopplerPage *poppler_page;
 222         GList *retval = NULL;
 223         GList *mapping_list;
 224         GList *list;
 225         double height;
 226
 227         pdf_document = PDF_DOCUMENT (document);
 228         poppler_page = poppler_document_get_page (pdf_document->document,
 229                                                   page);
 230         mapping_list = poppler_page_get_link_mapping (poppler_page);
 231         poppler_page_get_size (poppler_page, NULL, &height);
 232
 233         for (list = mapping_list; list; list = list->next) {
 234                 PopplerLinkMapping *link_mapping;
 235                 EvLinkMapping *ev_link_mapping;
 236
 237                 link_mapping = (PopplerLinkMapping *)list->data;
 238                 ev_link_mapping = g_new (EvLinkMapping, 1);
 239                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 240                 ev_link_mapping->x1 = link_mapping->area.x1;
 241                 ev_link_mapping->x2 = link_mapping->area.x2;
 242                 /* Invert this for X-style coordinates */
 243                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 244                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 245
 246                 retval = g_list_prepend (retval, ev_link_mapping);
 247         }
 248
 249         poppler_page_free_link_mapping (mapping_list);
 250
 251         return g_list_reverse (retval);
 252 }
 253
 254
 255 static GdkPixbuf *
 256 pdf_document_render_pixbuf (EvDocument   *document,
 257                             int           page,
 258                             double        scale)
 259 {
 260         PdfDocument *pdf_document;
 261         PopplerPage *poppler_page;
 262         GdkPixbuf *pixbuf;
 263         double width_points, height_points;
 264         gint width, height;
 265
 266         pdf_document = PDF_DOCUMENT (document);
 267         poppler_page = poppler_document_get_page (pdf_document->document,
 268                                                   page);
 269
 270         poppler_page_get_size (poppler_page, &width_points, &height_points);
 271         width = (int) ((width_points * scale) + 0.5);
 272         height = (int) ((height_points * scale) + 0.5);
 273
 274         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 275                                  FALSE, 8,
 276                                  width, height);
 277
 278         poppler_page_render_to_pixbuf (poppler_page,
 279                                        0, 0,
 280                                        width, height,
 281                                        scale,
 282                                        pixbuf,
 283                                        0, 0);
 284
 285         return pixbuf;
 286 }
 287
 288 /* EvDocumentSecurity */
 289
 290 static gboolean
 291 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 292 {
 293         /* FIXME: do we really need to have this? */
 294         return FALSE;
 295 }
 296
 297 static void
 298 pdf_document_set_password (EvDocumentSecurity *document_security,
 299                            const char         *password)
 300 {
 301         PdfDocument *document = PDF_DOCUMENT (document_security);
 302
 303         if (document->password)
 304                 g_free (document->password);
 305
 306         document->password = g_strdup (password);
 307 }
 308
 309 static gboolean
 310 pdf_document_can_get_text (EvDocument *document)
 311 {
 312         return TRUE;
 313 }
 314
 315 static EvDocumentInfo *
 316 pdf_document_get_info (EvDocument *document)
 317 {
 318         EvDocumentInfo *info;
 319         PopplerPageLayout layout;
 320         PopplerPageMode mode;
 321         PopplerViewerPreferences view_prefs;
 322         PopplerPermissions permissions;
 323
 324         info = g_new0 (EvDocumentInfo, 1);
 325
 326         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 327                             EV_DOCUMENT_INFO_FORMAT |
 328                             EV_DOCUMENT_INFO_AUTHOR |
 329                             EV_DOCUMENT_INFO_SUBJECT |
 330                             EV_DOCUMENT_INFO_KEYWORDS |
 331                             EV_DOCUMENT_INFO_LAYOUT |
 332                             EV_DOCUMENT_INFO_START_MODE |
 333                             EV_DOCUMENT_INFO_PERMISSIONS |
 334                             EV_DOCUMENT_INFO_UI_HINTS |
 335                             EV_DOCUMENT_INFO_CREATOR |
 336                             EV_DOCUMENT_INFO_PRODUCER |
 337                             EV_DOCUMENT_INFO_CREATION_DATE |
 338                             EV_DOCUMENT_INFO_MOD_DATE |
 339                             EV_DOCUMENT_INFO_LINEARIZED |
 340                             EV_DOCUMENT_INFO_N_PAGES |
 341                             EV_DOCUMENT_INFO_SECURITY;
 342
 343
 344         g_object_get (PDF_DOCUMENT (document)->document,
 345                       "title", &(info->title),
 346                       "format", &(info->format),
 347                       "author", &(info->author),
 348                       "subject", &(info->subject),
 349                       "keywords", &(info->keywords),
 350                       "page-mode", &mode,
 351                       "page-layout", &layout,
 352                       "viewer-preferences", &view_prefs,
 353                       "permissions", &permissions,
 354                       "creator", &(info->creator),
 355                       "producer", &(info->producer),
 356                       "creation-date", &(info->creation_date),
 357                       "mod-date", &(info->modified_date),
 358                       "linearized", &(info->linearized),
 359                       NULL);
 360
 361         switch (layout) {
 362                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 363                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 364                         break;
 365                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 366                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 367                         break;
 368                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 369                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 370                         break;
 371                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 372                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 373                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 374                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 375                         break;
 376                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 377                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 378                         break;
 379                 default:
 380                         break;
 381         }
 382
 383         switch (mode) {
 384                 case POPPLER_PAGE_MODE_NONE:
 385                         info->mode = EV_DOCUMENT_MODE_NONE;
 386                         break;
 387                 case POPPLER_PAGE_MODE_USE_THUMBS:
 388                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 389                         break;
 390                 case POPPLER_PAGE_MODE_USE_OC:
 391                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 392                         break;
 393                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 394                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 395                         break;
 396                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 397                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 398                 default:
 399                         break;
 400         }
 401
 402         info->ui_hints = 0;
 403         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 404                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 405         }
 406         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 407                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 408         }
 409         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 410                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 411         }
 412         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 413                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 414         }
 415         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 416                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 417         }
 418         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 419                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 420         }
 421         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 422                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 423         }
 424
 425         info->permissions = 0;
 426         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 427                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 428         }
 429         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 430                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 431         }
 432         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 433                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 434         }
 435         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 436                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 437         }
 438
 439         info->n_pages = ev_document_get_n_pages (document);
 440
 441         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
 442                 /* translators: this is the document security state */
 443                 info->security = g_strdup (_("Yes"));
 444         } else {
 445                 /* translators: this is the document security state */
 446                 info->security = g_strdup (_("No"));
 447         }
 448
 449         return info;
 450 }
 451
 452 static char *
 453 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 454 {
 455         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 456         PopplerPage *poppler_page;
 457         PopplerRectangle r;
 458         double height;
 459
 460         poppler_page = poppler_document_get_page (pdf_document->document, page);
 461         g_return_val_if_fail (poppler_page != NULL, NULL);
 462
 463         poppler_page_get_size (poppler_page, NULL, &height);
 464         r.x1 = rect->x1;
 465         r.y1 = height - rect->y2;
 466         r.x2 = rect->x2;
 467         r.y2 = height - rect->y1;
 468
 469         return poppler_page_get_text (poppler_page, &r);
 470 }
 471
 472 static void
 473 pdf_document_document_iface_init (EvDocumentIface *iface)
 474 {
 475         iface->save = pdf_document_save;
 476         iface->load = pdf_document_load;
 477         iface->get_n_pages = pdf_document_get_n_pages;
 478         iface->get_page_size = pdf_document_get_page_size;
 479         iface->get_page_label = pdf_document_get_page_label;
 480         iface->get_links = pdf_document_get_links;
 481         iface->render_pixbuf = pdf_document_render_pixbuf;
 482         iface->get_text = pdf_document_get_text;
 483         iface->can_get_text = pdf_document_can_get_text;
 484         iface->get_info = pdf_document_get_info;
 485 };
 486
 487 static void
 488 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 489 {
 490         iface->has_document_security = pdf_document_has_document_security;
 491         iface->set_password = pdf_document_set_password;
 492 }
 493
 494 static gboolean
 495 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 496 {
 497         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 498         PopplerIndexIter *iter;
 499
 500         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 501
 502         iter = poppler_index_iter_new (pdf_document->document);
 503         if (iter == NULL)
 504                 return FALSE;
 505         poppler_index_iter_free (iter);
 506
 507         return TRUE;
 508 }
 509
 510 static EvLink *
 511 ev_link_from_action (PopplerAction *action)
 512 {
 513         EvLink *link;
 514         const char *title;
 515
 516         title = action->any.title;
 517
 518         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 519                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 520         } else if (action->type == POPPLER_ACTION_URI) {
 521                 link = ev_link_new_external (title, action->uri.uri);
 522         } else {
 523                 link = ev_link_new_title (title);
 524         }
 525
 526         return link;
 527 }
 528
 529
 530 static void
 531 build_tree (PdfDocument      *pdf_document,
 532             GtkTreeModel     *model,
 533             GtkTreeIter      *parent,
 534             PopplerIndexIter *iter)
 535 {
 536
 537         do {
 538                 GtkTreeIter tree_iter;
 539                 PopplerIndexIter *child;
 540                 PopplerAction *action;
 541                 EvLink *link;
 542
 543                 action = poppler_index_iter_get_action (iter);
 544                 if (action) {
 545                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 546                         link = ev_link_from_action (action);
 547                         poppler_action_free (action);
 548
 549                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 550                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 551                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 552                                             -1);
 553                         child = poppler_index_iter_get_child (iter);
 554                         if (child)
 555                                 build_tree (pdf_document, model, &tree_iter, child);
 556                         poppler_index_iter_free (child);
 557                 }
 558         } while (poppler_index_iter_next (iter));
 559 }
 560
 561
 562 static GtkTreeModel *
 563 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 564 {
 565         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 566         GtkTreeModel *model = NULL;
 567         PopplerIndexIter *iter;
 568
 569         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 570
 571         iter = poppler_index_iter_new (pdf_document->document);
 572         /* Create the model iff we have items*/
 573         if (iter != NULL) {
 574                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 575                                                              G_TYPE_STRING,
 576                                                              G_TYPE_POINTER);
 577                 build_tree (pdf_document, model, NULL, iter);
 578                 poppler_index_iter_free (iter);
 579         }
 580
 581
 582         return model;
 583 }
 584
 585
 586 static void
 587 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 588 {
 589         iface->has_document_links = pdf_document_links_has_document_links;
 590         iface->get_links_model = pdf_document_links_get_links_model;
 591 }
 592
 593
 594 static GdkPixbuf *
 595 make_thumbnail_for_size (PdfDocument *pdf_document,
 596                          gint         page,
 597                          gint         size,
 598                          gboolean     border)
 599 {
 600         PopplerPage *poppler_page;
 601         GdkPixbuf *pixbuf;
 602         int width, height;
 603         int x_offset, y_offset;
 604         double scale;
 605         gdouble unscaled_width, unscaled_height;
 606
 607         poppler_page = poppler_document_get_page (pdf_document->document, page);
 608
 609         g_return_val_if_fail (poppler_page != NULL, NULL);
 610
 611         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 612         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 613         scale = width / unscaled_width;
 614
 615         if (border) {
 616                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 617                 x_offset = 1;
 618                 y_offset = 1;
 619         } else {
 620                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 621                                          width, height);
 622                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 623                 x_offset = 0;
 624                 y_offset = 0;
 625         }
 626
 627         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 628                                        width, height,
 629                                        scale, pixbuf,
 630                                        x_offset, y_offset);
 631
 632         return pixbuf;
 633 }
 634
 635 static GdkPixbuf *
 636 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 637                                        gint                  page,
 638                                        gint                  size,
 639                                        gboolean              border)
 640 {
 641         PdfDocument *pdf_document;
 642         PopplerPage *poppler_page;
 643         GdkPixbuf *pixbuf;
 644
 645         pdf_document = PDF_DOCUMENT (document_thumbnails);
 646
 647         poppler_page = poppler_document_get_page (pdf_document->document, page);
 648         g_return_val_if_fail (poppler_page != NULL, NULL);
 649
 650         pixbuf = poppler_page_get_thumbnail (poppler_page);
 651         if (pixbuf != NULL) {
 652                 /* The document provides its own thumbnails. */
 653                 if (border) {
 654                         GdkPixbuf *real_pixbuf;
 655
 656                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 657                         g_object_unref (pixbuf);
 658                         pixbuf = real_pixbuf;
 659                 }
 660         } else {
 661                 /* There is no provided thumbnail.  We need to make one. */
 662                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 663         }
 664         return pixbuf;
 665 }
 666
 667 static void
 668 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 669                                         gint                  page,
 670                                         gint                  size,
 671                                         gint                 *width,
 672                                         gint                 *height)
 673 {
 674         PdfDocument *pdf_document;
 675         PopplerPage *poppler_page;
 676         gint has_thumb;
 677
 678         pdf_document = PDF_DOCUMENT (document_thumbnails);
 679         poppler_page = poppler_document_get_page (pdf_document->document, page);
 680
 681         g_return_if_fail (width != NULL);
 682         g_return_if_fail (height != NULL);
 683         g_return_if_fail (poppler_page != NULL);
 684
 685         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 686
 687         if (!has_thumb) {
 688                 double page_width, page_height;
 689
 690                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 691                 if (page_width > page_height) {
 692                         *width = size;
 693                         *height = (int) (size * page_height / page_width);
 694                 } else {
 695                         *width = (int) (size * page_width / page_height);
 696                         *height = size;
 697                 }
 698         }
 699 }
 700
 701 static void
 702 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 703 {
 704         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 705         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 706 }
 707
 708
 709 static gboolean
 710 pdf_document_search_idle_callback (void *data)
 711 {
 712         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 713         PdfDocument *pdf_document = search->document;
 714         int n_pages;
 715         GList *matches;
 716         PopplerPage *page;
 717
 718         page = poppler_document_get_page (search->document->document,
 719                                           search->search_page);
 720
 721         ev_document_doc_mutex_lock ();
 722         matches = poppler_page_find_text (page, search->text);
 723         ev_document_doc_mutex_unlock ();
 724
 725         search->pages[search->search_page] = matches;
 726         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 727                                   search->search_page);
 728
 729         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 730         search->search_page += 1;
 731         if (search->search_page == n_pages) {
 732                 /* wrap around */
 733                 search->search_page = 0;
 734         }
 735
 736         if (search->search_page != search->start_page) {
 737                 return TRUE;
 738         }
 739
 740         /* We're done. */
 741         search->idle = 0; /* will return FALSE to remove */
 742         return FALSE;
 743 }
 744
 745
 746 static PdfDocumentSearch *
 747 pdf_document_search_new (PdfDocument *pdf_document,
 748                          int          start_page,
 749                          const char  *text)
 750 {
 751         PdfDocumentSearch *search;
 752         int n_pages;
 753         int i;
 754
 755         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 756
 757         search = g_new0 (PdfDocumentSearch, 1);
 758
 759         search->text = g_strdup (text);
 760         search->pages = g_new0 (GList *, n_pages);
 761         for (i = 0; i < n_pages; i++) {
 762                 search->pages[i] = NULL;
 763         }
 764
 765         search->document = pdf_document;
 766
 767         /* We add at low priority so the progress bar repaints */
 768         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 769                                         pdf_document_search_idle_callback,
 770                                         search,
 771                                         NULL);
 772
 773         search->start_page = start_page;
 774         search->search_page = start_page;
 775
 776         return search;
 777 }
 778
 779 static void
 780 pdf_document_search_free (PdfDocumentSearch   *search)
 781 {
 782         PdfDocument *pdf_document = search->document;
 783         int n_pages;
 784         int i;
 785
 786         if (search->idle != 0)
 787                 g_source_remove (search->idle);
 788
 789         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 790         for (i = 0; i < n_pages; i++) {
 791                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 792                 g_list_free (search->pages[i]);
 793         }
 794
 795         g_free (search->text);
 796 }
 797
 798 static void
 799 pdf_document_find_begin (EvDocumentFind   *document,
 800                          int               page,
 801                          const char       *search_string,
 802                          gboolean          case_sensitive)
 803 {
 804         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 805
 806         /* FIXME handle case_sensitive (right now XPDF
 807          * code is always case insensitive for ASCII
 808          * and case sensitive for all other languaages)
 809          */
 810
 811         if (pdf_document->search &&
 812             strcmp (search_string, pdf_document->search->text) == 0)
 813                 return;
 814
 815         if (pdf_document->search)
 816                 pdf_document_search_free (pdf_document->search);
 817
 818         pdf_document->search = pdf_document_search_new (pdf_document,
 819                                                         page,
 820                                                         search_string);
 821 }
 822
 823 int
 824 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
 825 {
 826         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 827
 828         if (search) {
 829                 return g_list_length (search->pages[page]);
 830         } else {
 831                 return 0;
 832         }
 833 }
 834
 835 gboolean
 836 pdf_document_find_get_result (EvDocumentFind *document_find,
 837                               int             page,
 838                               int             n_result,
 839                               EvRectangle    *rectangle)
 840 {
 841         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
 842         PdfDocumentSearch *search = pdf_document->search;
 843         PopplerPage *poppler_page;
 844         PopplerRectangle *r;
 845         double height;
 846
 847         if (search == NULL)
 848                 return FALSE;
 849
 850         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
 851                                                   n_result);
 852         if (r == NULL)
 853                 return FALSE;
 854
 855         poppler_page = poppler_document_get_page (pdf_document->document, page);
 856         poppler_page_get_size (poppler_page, NULL, &height);
 857         rectangle->x1 = r->x1;
 858         rectangle->y1 = height - r->y2;
 859         rectangle->x2 = r->x2;
 860         rectangle->y2 = height - r->y1;
 861
 862         return TRUE;
 863 }
 864
 865 int
 866 pdf_document_find_page_has_results (EvDocumentFind *document_find,
 867                                     int             page)
 868 {
 869         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 870
 871         g_return_val_if_fail (search != NULL, FALSE);
 872
 873         return search->pages[page] != NULL;
 874 }
 875
 876 double
 877 pdf_document_find_get_progress (EvDocumentFind *document_find)
 878 {
 879         PdfDocumentSearch *search;
 880         int n_pages, pages_done;
 881
 882         search = PDF_DOCUMENT (document_find)->search;
 883
 884         if (search == NULL) {
 885                 return 0;
 886         }
 887
 888         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
 889         if (search->search_page > search->start_page) {
 890                 pages_done = search->search_page - search->start_page + 1;
 891         } else if (search->search_page == search->start_page) {
 892                 pages_done = n_pages;
 893         } else {
 894                 pages_done = n_pages - search->start_page + search->search_page;
 895         }
 896
 897         return pages_done / (double) n_pages;
 898 }
 899
 900 static void
 901 pdf_document_find_cancel (EvDocumentFind *document)
 902 {
 903         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 904
 905         if (pdf_document->search) {
 906                 pdf_document_search_free (pdf_document->search);
 907                 pdf_document->search = NULL;
 908         }
 909 }
 910
 911 static void
 912 pdf_document_find_iface_init (EvDocumentFindIface *iface)
 913 {
 914         iface->begin = pdf_document_find_begin;
 915         iface->get_n_results = pdf_document_find_get_n_results;
 916         iface->get_result = pdf_document_find_get_result;
 917         iface->page_has_results = pdf_document_find_page_has_results;
 918         iface->get_progress = pdf_document_find_get_progress;
 919         iface->cancel = pdf_document_find_cancel;
 920 }
 921
 922 static void
 923 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
 924                                 int first_page, int last_page)
 925 {
 926         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 927
 928         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
 929                                                      first_page,
 930                                                      last_page - first_page + 1);
 931 }
 932
 933 static void
 934 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
 935 {
 936         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 937         PopplerPage *poppler_page;
 938
 939         g_return_if_fail (pdf_document->ps_file != NULL);
 940
 941         poppler_page = poppler_document_get_page (pdf_document->document, page);
 942         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
 943 }
 944
 945 static void
 946 pdf_document_ps_exporter_end (EvPSExporter *exporter)
 947 {
 948         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 949
 950         poppler_ps_file_free (pdf_document->ps_file);
 951         pdf_document->ps_file = NULL;
 952 }
 953
 954 static void
 955 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
 956 {
 957         iface->begin = pdf_document_ps_exporter_begin;
 958         iface->do_page = pdf_document_ps_exporter_do_page;
 959         iface->end = pdf_document_ps_exporter_end;
 960 }
 961
 962 PdfDocument *
 963 pdf_document_new (void)
 964 {
 965         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
 966 }