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                             EV_DOCUMENT_INFO_PERMISSIONS |
 333                             EV_DOCUMENT_INFO_UI_HINTS |
 334                             EV_DOCUMENT_INFO_CREATOR |
 335                             EV_DOCUMENT_INFO_PRODUCER |
 336                             EV_DOCUMENT_INFO_CREATION_DATE |
 337                             EV_DOCUMENT_INFO_MOD_DATE |
 338                             EV_DOCUMENT_INFO_LINEARIZED;
 339
 340
 341         g_object_get (PDF_DOCUMENT (document)->document,
 342                       "title", &(info->title),
 343                       "format", &(info->format),
 344                       "author", &(info->author),
 345                       "subject", &(info->subject),
 346                       "keywords", &(info->keywords),
 347                       "page-mode", &mode,
 348                       "page-layout", &layout,
 349                       "viewer-preferences", &view_prefs,
 350                       "permissions", &permissions,
 351                       "creator", &(info->creator),
 352                       "producer", &(info->producer),
 353                       "creation-date", &(info->creation_date),
 354                       "mod-date", &(info->modified_date),
 355                       "linearized", &(info->linearized),
 356                       NULL);
 357
 358         switch (layout) {
 359                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 360                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 361                         break;
 362                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 363                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 364                         break;
 365                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 366                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 367                         break;
 368                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 369                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 370                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 371                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 372                         break;
 373                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 374                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 375                         break;
 376                 default:
 377                         break;
 378         }
 379
 380         switch (mode) {
 381                 case POPPLER_PAGE_MODE_NONE:
 382                         info->mode = EV_DOCUMENT_MODE_NONE;
 383                         break;
 384                 case POPPLER_PAGE_MODE_USE_THUMBS:
 385                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 386                         break;
 387                 case POPPLER_PAGE_MODE_USE_OC:
 388                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 389                         break;
 390                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 391                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 392                         break;
 393                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 394                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 395                 default:
 396                         break;
 397         }
 398
 399         info->ui_hints = 0;
 400         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 401                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 402         }
 403         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 404                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 405         }
 406         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 407                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 408         }
 409         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 410                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 411         }
 412         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 413                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 414         }
 415         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 416                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 417         }
 418         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 419                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 420         }
 421
 422         info->permissions = 0;
 423         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 424                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 425         }
 426         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 427                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 428         }
 429         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 430                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 431         }
 432         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 433                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 434         }
 435         return info;
 436 }
 437
 438 static char *
 439 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 440 {
 441         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 442         PopplerPage *poppler_page;
 443         PopplerRectangle r;
 444         double height;
 445
 446         poppler_page = poppler_document_get_page (pdf_document->document, page);
 447         g_return_val_if_fail (poppler_page != NULL, NULL);
 448
 449         poppler_page_get_size (poppler_page, NULL, &height);
 450         r.x1 = rect->x1;
 451         r.y1 = height - rect->y2;
 452         r.x2 = rect->x2;
 453         r.y2 = height - rect->y1;
 454
 455         return poppler_page_get_text (poppler_page, &r);
 456 }
 457
 458 static void
 459 pdf_document_document_iface_init (EvDocumentIface *iface)
 460 {
 461         iface->save = pdf_document_save;
 462         iface->load = pdf_document_load;
 463         iface->get_n_pages = pdf_document_get_n_pages;
 464         iface->get_page_size = pdf_document_get_page_size;
 465         iface->get_page_label = pdf_document_get_page_label;
 466         iface->get_links = pdf_document_get_links;
 467         iface->render_pixbuf = pdf_document_render_pixbuf;
 468         iface->get_text = pdf_document_get_text;
 469         iface->can_get_text = pdf_document_can_get_text;
 470         iface->get_info = pdf_document_get_info;
 471 };
 472
 473 static void
 474 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 475 {
 476         iface->has_document_security = pdf_document_has_document_security;
 477         iface->set_password = pdf_document_set_password;
 478 }
 479
 480 static gboolean
 481 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 482 {
 483         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 484         PopplerIndexIter *iter;
 485
 486         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 487
 488         iter = poppler_index_iter_new (pdf_document->document);
 489         if (iter == NULL)
 490                 return FALSE;
 491         poppler_index_iter_free (iter);
 492
 493         return TRUE;
 494 }
 495
 496 static EvLink *
 497 ev_link_from_action (PopplerAction *action)
 498 {
 499         EvLink *link;
 500         const char *title;
 501
 502         title = action->any.title;
 503
 504         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 505                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 506         } else if (action->type == POPPLER_ACTION_URI) {
 507                 link = ev_link_new_external (title, action->uri.uri);
 508         } else {
 509                 link = ev_link_new_title (title);
 510         }
 511
 512         return link;
 513 }
 514
 515
 516 static void
 517 build_tree (PdfDocument      *pdf_document,
 518             GtkTreeModel     *model,
 519             GtkTreeIter      *parent,
 520             PopplerIndexIter *iter)
 521 {
 522
 523         do {
 524                 GtkTreeIter tree_iter;
 525                 PopplerIndexIter *child;
 526                 PopplerAction *action;
 527                 EvLink *link;
 528
 529                 action = poppler_index_iter_get_action (iter);
 530                 if (action) {
 531                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 532                         link = ev_link_from_action (action);
 533                         poppler_action_free (action);
 534
 535                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 536                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 537                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 538                                             -1);
 539                         child = poppler_index_iter_get_child (iter);
 540                         if (child)
 541                                 build_tree (pdf_document, model, &tree_iter, child);
 542                         poppler_index_iter_free (child);
 543                 }
 544         } while (poppler_index_iter_next (iter));
 545 }
 546
 547
 548 static GtkTreeModel *
 549 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 550 {
 551         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 552         GtkTreeModel *model = NULL;
 553         PopplerIndexIter *iter;
 554
 555         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 556
 557         iter = poppler_index_iter_new (pdf_document->document);
 558         /* Create the model iff we have items*/
 559         if (iter != NULL) {
 560                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 561                                                              G_TYPE_STRING,
 562                                                              G_TYPE_POINTER);
 563                 build_tree (pdf_document, model, NULL, iter);
 564                 poppler_index_iter_free (iter);
 565         }
 566
 567
 568         return model;
 569 }
 570
 571
 572 static void
 573 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 574 {
 575         iface->has_document_links = pdf_document_links_has_document_links;
 576         iface->get_links_model = pdf_document_links_get_links_model;
 577 }
 578
 579
 580 static GdkPixbuf *
 581 make_thumbnail_for_size (PdfDocument *pdf_document,
 582                          gint         page,
 583                          gint         size,
 584                          gboolean     border)
 585 {
 586         PopplerPage *poppler_page;
 587         GdkPixbuf *pixbuf;
 588         int width, height;
 589         int x_offset, y_offset;
 590         double scale;
 591         gdouble unscaled_width, unscaled_height;
 592
 593         poppler_page = poppler_document_get_page (pdf_document->document, page);
 594
 595         g_return_val_if_fail (poppler_page != NULL, NULL);
 596
 597         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 598         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 599         scale = width / unscaled_width;
 600
 601         if (border) {
 602                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 603                 x_offset = 1;
 604                 y_offset = 1;
 605         } else {
 606                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 607                                          width, height);
 608                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 609                 x_offset = 0;
 610                 y_offset = 0;
 611         }
 612
 613         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 614                                        width, height,
 615                                        scale, pixbuf,
 616                                        x_offset, y_offset);
 617
 618         return pixbuf;
 619 }
 620
 621 static GdkPixbuf *
 622 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 623                                        gint                  page,
 624                                        gint                  size,
 625                                        gboolean              border)
 626 {
 627         PdfDocument *pdf_document;
 628         PopplerPage *poppler_page;
 629         GdkPixbuf *pixbuf;
 630
 631         pdf_document = PDF_DOCUMENT (document_thumbnails);
 632
 633         poppler_page = poppler_document_get_page (pdf_document->document, page);
 634         g_return_val_if_fail (poppler_page != NULL, NULL);
 635
 636         pixbuf = poppler_page_get_thumbnail (poppler_page);
 637         if (pixbuf != NULL) {
 638                 /* The document provides its own thumbnails. */
 639                 if (border) {
 640                         GdkPixbuf *real_pixbuf;
 641
 642                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 643                         g_object_unref (pixbuf);
 644                         pixbuf = real_pixbuf;
 645                 }
 646         } else {
 647                 /* There is no provided thumbnail.  We need to make one. */
 648                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 649         }
 650         return pixbuf;
 651 }
 652
 653 static void
 654 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 655                                         gint                  page,
 656                                         gint                  size,
 657                                         gint                 *width,
 658                                         gint                 *height)
 659 {
 660         PdfDocument *pdf_document;
 661         PopplerPage *poppler_page;
 662         gint has_thumb;
 663
 664         pdf_document = PDF_DOCUMENT (document_thumbnails);
 665         poppler_page = poppler_document_get_page (pdf_document->document, page);
 666
 667         g_return_if_fail (width != NULL);
 668         g_return_if_fail (height != NULL);
 669         g_return_if_fail (poppler_page != NULL);
 670
 671         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 672
 673         if (!has_thumb) {
 674                 double page_width, page_height;
 675
 676                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 677                 if (page_width > page_height) {
 678                         *width = size;
 679                         *height = (int) (size * page_height / page_width);
 680                 } else {
 681                         *width = (int) (size * page_width / page_height);
 682                         *height = size;
 683                 }
 684         }
 685 }
 686
 687 static void
 688 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 689 {
 690         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 691         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 692 }
 693
 694
 695 static gboolean
 696 pdf_document_search_idle_callback (void *data)
 697 {
 698         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 699         PdfDocument *pdf_document = search->document;
 700         int n_pages;
 701         GList *matches;
 702         PopplerPage *page;
 703
 704         page = poppler_document_get_page (search->document->document,
 705                                           search->search_page);
 706
 707         ev_document_doc_mutex_lock ();
 708         matches = poppler_page_find_text (page, search->text);
 709         ev_document_doc_mutex_unlock ();
 710
 711         search->pages[search->search_page] = matches;
 712         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 713                                   search->search_page);
 714
 715         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 716         search->search_page += 1;
 717         if (search->search_page == n_pages) {
 718                 /* wrap around */
 719                 search->search_page = 0;
 720         }
 721
 722         if (search->search_page != search->start_page) {
 723                 return TRUE;
 724         }
 725
 726         /* We're done. */
 727         search->idle = 0; /* will return FALSE to remove */
 728         return FALSE;
 729 }
 730
 731
 732 static PdfDocumentSearch *
 733 pdf_document_search_new (PdfDocument *pdf_document,
 734                          int          start_page,
 735                          const char  *text)
 736 {
 737         PdfDocumentSearch *search;
 738         int n_pages;
 739         int i;
 740
 741         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 742
 743         search = g_new0 (PdfDocumentSearch, 1);
 744
 745         search->text = g_strdup (text);
 746         search->pages = g_new0 (GList *, n_pages);
 747         for (i = 0; i < n_pages; i++) {
 748                 search->pages[i] = NULL;
 749         }
 750
 751         search->document = pdf_document;
 752
 753         /* We add at low priority so the progress bar repaints */
 754         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 755                                         pdf_document_search_idle_callback,
 756                                         search,
 757                                         NULL);
 758
 759         search->start_page = start_page;
 760         search->search_page = start_page;
 761
 762         return search;
 763 }
 764
 765 static void
 766 pdf_document_search_free (PdfDocumentSearch   *search)
 767 {
 768         PdfDocument *pdf_document = search->document;
 769         int n_pages;
 770         int i;
 771
 772         if (search->idle != 0)
 773                 g_source_remove (search->idle);
 774
 775         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 776         for (i = 0; i < n_pages; i++) {
 777                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 778                 g_list_free (search->pages[i]);
 779         }
 780
 781         g_free (search->text);
 782 }
 783
 784 static void
 785 pdf_document_find_begin (EvDocumentFind   *document,
 786                          int               page,
 787                          const char       *search_string,
 788                          gboolean          case_sensitive)
 789 {
 790         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 791
 792         /* FIXME handle case_sensitive (right now XPDF
 793          * code is always case insensitive for ASCII
 794          * and case sensitive for all other languaages)
 795          */
 796
 797         if (pdf_document->search &&
 798             strcmp (search_string, pdf_document->search->text) == 0)
 799                 return;
 800
 801         if (pdf_document->search)
 802                 pdf_document_search_free (pdf_document->search);
 803
 804         pdf_document->search = pdf_document_search_new (pdf_document,
 805                                                         page,
 806                                                         search_string);
 807 }
 808
 809 int
 810 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
 811 {
 812         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 813
 814         if (search) {
 815                 return g_list_length (search->pages[page]);
 816         } else {
 817                 return 0;
 818         }
 819 }
 820
 821 gboolean
 822 pdf_document_find_get_result (EvDocumentFind *document_find,
 823                               int             page,
 824                               int             n_result,
 825                               EvRectangle    *rectangle)
 826 {
 827         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
 828         PdfDocumentSearch *search = pdf_document->search;
 829         PopplerPage *poppler_page;
 830         PopplerRectangle *r;
 831         double height;
 832
 833         if (search == NULL)
 834                 return FALSE;
 835
 836         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
 837                                                   n_result);
 838         if (r == NULL)
 839                 return FALSE;
 840
 841         poppler_page = poppler_document_get_page (pdf_document->document, page);
 842         poppler_page_get_size (poppler_page, NULL, &height);
 843         rectangle->x1 = r->x1;
 844         rectangle->y1 = height - r->y2;
 845         rectangle->x2 = r->x2;
 846         rectangle->y2 = height - r->y1;
 847
 848         return TRUE;
 849 }
 850
 851 int
 852 pdf_document_find_page_has_results (EvDocumentFind *document_find,
 853                                     int             page)
 854 {
 855         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 856
 857         g_return_val_if_fail (search != NULL, FALSE);
 858
 859         return search->pages[page] != NULL;
 860 }
 861
 862 double
 863 pdf_document_find_get_progress (EvDocumentFind *document_find)
 864 {
 865         PdfDocumentSearch *search;
 866         int n_pages, pages_done;
 867
 868         search = PDF_DOCUMENT (document_find)->search;
 869
 870         if (search == NULL) {
 871                 return 0;
 872         }
 873
 874         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
 875         if (search->search_page > search->start_page) {
 876                 pages_done = search->search_page - search->start_page + 1;
 877         } else if (search->search_page == search->start_page) {
 878                 pages_done = n_pages;
 879         } else {
 880                 pages_done = n_pages - search->start_page + search->search_page;
 881         }
 882
 883         return pages_done / (double) n_pages;
 884 }
 885
 886 static void
 887 pdf_document_find_cancel (EvDocumentFind *document)
 888 {
 889         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 890
 891         if (pdf_document->search) {
 892                 pdf_document_search_free (pdf_document->search);
 893                 pdf_document->search = NULL;
 894         }
 895 }
 896
 897 static void
 898 pdf_document_find_iface_init (EvDocumentFindIface *iface)
 899 {
 900         iface->begin = pdf_document_find_begin;
 901         iface->get_n_results = pdf_document_find_get_n_results;
 902         iface->get_result = pdf_document_find_get_result;
 903         iface->page_has_results = pdf_document_find_page_has_results;
 904         iface->get_progress = pdf_document_find_get_progress;
 905         iface->cancel = pdf_document_find_cancel;
 906 }
 907
 908 static void
 909 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
 910                                 int first_page, int last_page)
 911 {
 912         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 913
 914         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
 915                                                      first_page,
 916                                                      last_page - first_page + 1);
 917 }
 918
 919 static void
 920 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
 921 {
 922         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 923         PopplerPage *poppler_page;
 924
 925         g_return_if_fail (pdf_document->ps_file != NULL);
 926
 927         poppler_page = poppler_document_get_page (pdf_document->document, page);
 928         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
 929 }
 930
 931 static void
 932 pdf_document_ps_exporter_end (EvPSExporter *exporter)
 933 {
 934         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 935
 936         poppler_ps_file_free (pdf_document->ps_file);
 937         pdf_document->ps_file = NULL;
 938 }
 939
 940 static void
 941 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
 942 {
 943         iface->begin = pdf_document_ps_exporter_begin;
 944         iface->do_page = pdf_document_ps_exporter_do_page;
 945         iface->end = pdf_document_ps_exporter_end;
 946 }
 947
 948 PdfDocument *
 949 pdf_document_new (void)
 950 {
 951         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
 952 }