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-fonts.h"
  34 #include "ev-document-security.h"
  35 #include "ev-document-thumbnails.h"
  36 #include "ev-selection.h"
  37
  38 typedef struct {
  39         PdfDocument *document;
  40         char *text;
  41         GList **pages;
  42         guint idle;
  43         int start_page;
  44         int search_page;
  45 } PdfDocumentSearch;
  46
  47 struct _PdfDocumentClass
  48 {
  49         GObjectClass parent_class;
  50 };
  51
  52 struct _PdfDocument
  53 {
  54         GObject parent_instance;
  55
  56         PopplerDocument *document;
  57         PopplerPSFile *ps_file;
  58         gchar *password;
  59
  60         PopplerOrientation orientation;
  61         gboolean orientation_set;
  62
  63         PopplerFontInfo *font_info;
  64         PopplerFontsIter *fonts_iter;
  65         int fonts_scanned_pages;
  66
  67         PdfDocumentSearch *search;
  68 };
  69
  70 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
  71 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
  72 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  73 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
  74 static void pdf_document_document_fonts_iface_init      (EvDocumentFontsIface      *iface);
  75 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
  76 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  77 static void pdf_selection_iface_init                    (EvSelectionIface          *iface);
  78 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
  79                                                          gint                       page,
  80                                                          gint                       size,
  81                                                          gint                      *width,
  82                                                          gint                      *height);
  83 static EvLink * ev_link_from_action (PopplerAction *action);
  84
  85
  86 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  87                          {
  88                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  89                                                         pdf_document_document_iface_init);
  90                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  91                                                         pdf_document_security_iface_init);
  92                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  93                                                         pdf_document_document_thumbnails_iface_init);
  94                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  95                                                         pdf_document_document_links_iface_init);
  96                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
  97                                                         pdf_document_document_fonts_iface_init);
  98                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
  99                                                         pdf_document_find_iface_init);
 100                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
 101                                                         pdf_document_ps_exporter_iface_init);
 102                                  G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
 103                                                         pdf_selection_iface_init);
 104                          });
 105
 106 static void
 107 pdf_document_search_free (PdfDocumentSearch   *search)
 108 {
 109         PdfDocument *pdf_document = search->document;
 110         int n_pages;
 111         int i;
 112
 113         if (search->idle != 0)
 114                 g_source_remove (search->idle);
 115
 116         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 117         for (i = 0; i < n_pages; i++) {
 118                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 119                 g_list_free (search->pages[i]);
 120         }
 121
 122         g_free (search->text);
 123 }
 124
 125 static void
 126 pdf_document_dispose (GObject *object)
 127 {
 128         PdfDocument *pdf_document = PDF_DOCUMENT(object);
 129
 130         if (pdf_document->search) {
 131                 pdf_document_search_free (pdf_document->search);
 132                 pdf_document->search = NULL;
 133         }
 134
 135         if (pdf_document->document) {
 136                 g_object_unref (pdf_document->document);
 137         }
 138
 139         if (pdf_document->font_info) {
 140                 poppler_font_info_free (pdf_document->font_info);
 141         }
 142
 143         if (pdf_document->fonts_iter) {
 144                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 145         }
 146 }
 147
 148 static void
 149 pdf_document_class_init (PdfDocumentClass *klass)
 150 {
 151         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
 152
 153         g_object_class->dispose = pdf_document_dispose;
 154 }
 155
 156 static void
 157 pdf_document_init (PdfDocument *pdf_document)
 158 {
 159         pdf_document->password = NULL;
 160 }
 161
 162 static void
 163 convert_error (GError  *poppler_error,
 164                GError **error)
 165 {
 166         if (poppler_error == NULL)
 167                 return;
 168
 169         if (poppler_error->domain == POPPLER_ERROR) {
 170                 /* convert poppler errors into EvDocument errors */
 171                 gint code = EV_DOCUMENT_ERROR_INVALID;
 172                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 173                         code = EV_DOCUMENT_ERROR_INVALID;
 174                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 175                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 176
 177
 178                 g_set_error (error,
 179                              EV_DOCUMENT_ERROR,
 180                              code,
 181                              poppler_error->message,
 182                              NULL);
 183         } else {
 184                 g_propagate_error (error, poppler_error);
 185         }
 186 }
 187
 188
 189 /* EvDocument */
 190 static gboolean
 191 pdf_document_save (EvDocument  *document,
 192                    const char  *uri,
 193                    GError     **error)
 194 {
 195         gboolean retval;
 196         GError *poppler_error = NULL;
 197
 198         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 199                                         uri,
 200                                         &poppler_error);
 201         if (! retval)
 202                 convert_error (poppler_error, error);
 203
 204         return retval;
 205 }
 206
 207 static PopplerOrientation
 208 get_document_orientation (PdfDocument *pdf_document)
 209 {
 210         PopplerOrientation orientation;
 211         PopplerPage *page;
 212
 213         /* Should prolly be smarter here and check more than first page */
 214         page = poppler_document_get_page (pdf_document->document, 0);
 215         if (page) {
 216                 orientation = poppler_page_get_orientation (page);
 217         } else {
 218                 orientation = POPPLER_ORIENTATION_PORTRAIT;
 219         }
 220         g_object_unref (page);
 221
 222         return orientation;
 223 }
 224
 225 static gboolean
 226 pdf_document_load (EvDocument   *document,
 227                    const char   *uri,
 228                    GError      **error)
 229 {
 230         GError *poppler_error = NULL;
 231         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 232
 233         pdf_document->document =
 234                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 235
 236         if (pdf_document->document == NULL) {
 237                 convert_error (poppler_error, error);
 238                 return FALSE;
 239         }
 240
 241         return TRUE;
 242 }
 243
 244 static int
 245 pdf_document_get_n_pages (EvDocument *document)
 246 {
 247         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 248 }
 249
 250 /* FIXME This should not be necessary, poppler should rember it */
 251 static void
 252 set_page_orientation (PdfDocument *pdf_document, PopplerPage *page)
 253 {
 254         if (pdf_document->orientation_set) {
 255                 poppler_page_set_orientation (page, pdf_document->orientation);
 256         }
 257 }
 258
 259 static void
 260 pdf_document_get_page_size (EvDocument   *document,
 261                             int           page,
 262                             double       *width,
 263                             double       *height)
 264 {
 265         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 266         PopplerPage *poppler_page;
 267
 268         poppler_page = poppler_document_get_page (pdf_document->document, page);
 269         set_page_orientation (pdf_document, poppler_page);
 270         poppler_page_get_size (poppler_page, width, height);
 271         g_object_unref (poppler_page);
 272 }
 273
 274 static char *
 275 pdf_document_get_page_label (EvDocument *document,
 276                              int         page)
 277 {
 278         PopplerPage *poppler_page;
 279         char *label = NULL;
 280
 281         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 282                                                   page);
 283
 284         g_object_get (G_OBJECT (poppler_page),
 285                       "label", &label,
 286                       NULL);
 287         g_object_unref (poppler_page);
 288
 289         return label;
 290 }
 291
 292 static GList *
 293 pdf_document_get_links (EvDocument *document,
 294                         int         page)
 295 {
 296         PdfDocument *pdf_document;
 297         PopplerPage *poppler_page;
 298         GList *retval = NULL;
 299         GList *mapping_list;
 300         GList *list;
 301         double height;
 302
 303         pdf_document = PDF_DOCUMENT (document);
 304         poppler_page = poppler_document_get_page (pdf_document->document,
 305                                                   page);
 306         mapping_list = poppler_page_get_link_mapping (poppler_page);
 307         poppler_page_get_size (poppler_page, NULL, &height);
 308
 309         for (list = mapping_list; list; list = list->next) {
 310                 PopplerLinkMapping *link_mapping;
 311                 EvLinkMapping *ev_link_mapping;
 312
 313                 link_mapping = (PopplerLinkMapping *)list->data;
 314                 ev_link_mapping = g_new (EvLinkMapping, 1);
 315                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 316                 ev_link_mapping->x1 = link_mapping->area.x1;
 317                 ev_link_mapping->x2 = link_mapping->area.x2;
 318                 /* Invert this for X-style coordinates */
 319                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 320                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 321
 322                 retval = g_list_prepend (retval, ev_link_mapping);
 323         }
 324
 325         poppler_page_free_link_mapping (mapping_list);
 326         g_object_unref (poppler_page);
 327
 328         return g_list_reverse (retval);
 329 }
 330
 331
 332 static GdkPixbuf *
 333 pdf_document_render_pixbuf (EvDocument   *document,
 334                             EvRenderContext *rc)
 335 {
 336         PdfDocument *pdf_document;
 337         PopplerPage *poppler_page;
 338         GdkPixbuf *pixbuf;
 339         double width_points, height_points;
 340         gint width, height;
 341
 342         pdf_document = PDF_DOCUMENT (document);
 343         poppler_page = poppler_document_get_page (pdf_document->document,
 344                                                   rc->page);
 345         set_page_orientation (pdf_document, poppler_page);
 346
 347         poppler_page_get_size (poppler_page, &width_points, &height_points);
 348         width = (int) ((width_points * rc->scale) + 0.5);
 349         height = (int) ((height_points * rc->scale) + 0.5);
 350
 351         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 352                                  FALSE, 8,
 353                                  width, height);
 354
 355         poppler_page_render_to_pixbuf (poppler_page,
 356                                        0, 0,
 357                                        width, height,
 358                                        rc->scale,
 359                                        pixbuf,
 360                                        0, 0);
 361
 362         g_object_unref (poppler_page);
 363
 364         return pixbuf;
 365 }
 366
 367 /* EvDocumentSecurity */
 368
 369 static gboolean
 370 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 371 {
 372         /* FIXME: do we really need to have this? */
 373         return FALSE;
 374 }
 375
 376 static void
 377 pdf_document_set_password (EvDocumentSecurity *document_security,
 378                            const char         *password)
 379 {
 380         PdfDocument *document = PDF_DOCUMENT (document_security);
 381
 382         if (document->password)
 383                 g_free (document->password);
 384
 385         document->password = g_strdup (password);
 386 }
 387
 388 static gboolean
 389 pdf_document_can_get_text (EvDocument *document)
 390 {
 391         return TRUE;
 392 }
 393
 394 static EvDocumentInfo *
 395 pdf_document_get_info (EvDocument *document)
 396 {
 397         EvDocumentInfo *info;
 398         PopplerPageLayout layout;
 399         PopplerPageMode mode;
 400         PopplerViewerPreferences view_prefs;
 401         PopplerPermissions permissions;
 402
 403         info = g_new0 (EvDocumentInfo, 1);
 404
 405         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 406                             EV_DOCUMENT_INFO_FORMAT |
 407                             EV_DOCUMENT_INFO_AUTHOR |
 408                             EV_DOCUMENT_INFO_SUBJECT |
 409                             EV_DOCUMENT_INFO_KEYWORDS |
 410                             EV_DOCUMENT_INFO_LAYOUT |
 411                             EV_DOCUMENT_INFO_START_MODE |
 412                             EV_DOCUMENT_INFO_PERMISSIONS |
 413                             EV_DOCUMENT_INFO_UI_HINTS |
 414                             EV_DOCUMENT_INFO_CREATOR |
 415                             EV_DOCUMENT_INFO_PRODUCER |
 416                             EV_DOCUMENT_INFO_CREATION_DATE |
 417                             EV_DOCUMENT_INFO_MOD_DATE |
 418                             EV_DOCUMENT_INFO_LINEARIZED |
 419                             EV_DOCUMENT_INFO_N_PAGES |
 420                             EV_DOCUMENT_INFO_SECURITY;
 421
 422
 423         g_object_get (PDF_DOCUMENT (document)->document,
 424                       "title", &(info->title),
 425                       "format", &(info->format),
 426                       "author", &(info->author),
 427                       "subject", &(info->subject),
 428                       "keywords", &(info->keywords),
 429                       "page-mode", &mode,
 430                       "page-layout", &layout,
 431                       "viewer-preferences", &view_prefs,
 432                       "permissions", &permissions,
 433                       "creator", &(info->creator),
 434                       "producer", &(info->producer),
 435                       "creation-date", &(info->creation_date),
 436                       "mod-date", &(info->modified_date),
 437                       "linearized", &(info->linearized),
 438                       NULL);
 439
 440         switch (layout) {
 441                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 442                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 443                         break;
 444                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 445                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 446                         break;
 447                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 448                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 449                         break;
 450                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 451                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 452                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 453                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 454                         break;
 455                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 456                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 457                         break;
 458                 default:
 459                         break;
 460         }
 461
 462         switch (mode) {
 463                 case POPPLER_PAGE_MODE_NONE:
 464                         info->mode = EV_DOCUMENT_MODE_NONE;
 465                         break;
 466                 case POPPLER_PAGE_MODE_USE_THUMBS:
 467                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 468                         break;
 469                 case POPPLER_PAGE_MODE_USE_OC:
 470                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 471                         break;
 472                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 473                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 474                         break;
 475                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 476                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 477                 default:
 478                         break;
 479         }
 480
 481         info->ui_hints = 0;
 482         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 483                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 484         }
 485         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 486                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 487         }
 488         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 489                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 490         }
 491         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 492                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 493         }
 494         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 495                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 496         }
 497         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 498                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 499         }
 500         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 501                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 502         }
 503
 504         info->permissions = 0;
 505         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 506                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 507         }
 508         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 509                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 510         }
 511         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 512                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 513         }
 514         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 515                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 516         }
 517
 518         info->n_pages = ev_document_get_n_pages (document);
 519
 520         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
 521                 /* translators: this is the document security state */
 522                 info->security = g_strdup (_("Yes"));
 523         } else {
 524                 /* translators: this is the document security state */
 525                 info->security = g_strdup (_("No"));
 526         }
 527
 528         return info;
 529 }
 530
 531 static char *
 532 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 533 {
 534         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 535         PopplerPage *poppler_page;
 536         PopplerRectangle r;
 537         double height;
 538         char *text;
 539
 540         poppler_page = poppler_document_get_page (pdf_document->document, page);
 541         set_page_orientation (pdf_document, poppler_page);
 542         g_return_val_if_fail (poppler_page != NULL, NULL);
 543
 544         poppler_page_get_size (poppler_page, NULL, &height);
 545         r.x1 = rect->x1;
 546         r.y1 = height - rect->y2;
 547         r.x2 = rect->x2;
 548         r.y2 = height - rect->y1;
 549
 550         text = poppler_page_get_text (poppler_page, &r);
 551
 552         g_object_unref (poppler_page);
 553
 554         return text;
 555 }
 556
 557 static EvOrientation
 558 pdf_document_get_orientation (EvDocument *document)
 559 {
 560         EvOrientation result;
 561         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 562
 563         if (!pdf_document->orientation_set) {
 564                 pdf_document->orientation = get_document_orientation (pdf_document);
 565         }
 566
 567         switch (pdf_document->orientation) {
 568         case POPPLER_ORIENTATION_PORTRAIT:
 569                 result = EV_ORIENTATION_PORTRAIT;
 570                 break;
 571         case POPPLER_ORIENTATION_LANDSCAPE:
 572                 result = EV_ORIENTATION_LANDSCAPE;
 573                 break;
 574         case POPPLER_ORIENTATION_UPSIDEDOWN:
 575                 result = EV_ORIENTATION_UPSIDEDOWN;
 576                 break;
 577         case POPPLER_ORIENTATION_SEASCAPE:
 578                 result = EV_ORIENTATION_SEASCAPE;
 579                 break;
 580         default:
 581                 g_assert_not_reached ();
 582         }
 583
 584         return result;
 585 }
 586
 587 static void
 588 pdf_document_set_orientation (EvDocument *document, EvOrientation orientation)
 589 {
 590         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 591         PopplerOrientation poppler_orientation;
 592
 593         switch (orientation) {
 594         case EV_ORIENTATION_PORTRAIT:
 595                 poppler_orientation = POPPLER_ORIENTATION_PORTRAIT;
 596                 break;
 597         case EV_ORIENTATION_LANDSCAPE:
 598                 poppler_orientation = POPPLER_ORIENTATION_LANDSCAPE;
 599                 break;
 600         case EV_ORIENTATION_UPSIDEDOWN:
 601                 poppler_orientation = POPPLER_ORIENTATION_UPSIDEDOWN;
 602                 break;
 603         case EV_ORIENTATION_SEASCAPE:
 604                 poppler_orientation = POPPLER_ORIENTATION_SEASCAPE;
 605                 break;
 606         default:
 607                 g_assert_not_reached ();
 608         }
 609
 610         pdf_document->orientation = poppler_orientation;
 611         pdf_document->orientation_set = TRUE;
 612 }
 613
 614 static void
 615 pdf_document_document_iface_init (EvDocumentIface *iface)
 616 {
 617         iface->save = pdf_document_save;
 618         iface->load = pdf_document_load;
 619         iface->get_n_pages = pdf_document_get_n_pages;
 620         iface->get_page_size = pdf_document_get_page_size;
 621         iface->get_page_label = pdf_document_get_page_label;
 622         iface->get_links = pdf_document_get_links;
 623         iface->render_pixbuf = pdf_document_render_pixbuf;
 624         iface->get_text = pdf_document_get_text;
 625         iface->can_get_text = pdf_document_can_get_text;
 626         iface->get_info = pdf_document_get_info;
 627         iface->set_orientation = pdf_document_set_orientation;
 628         iface->get_orientation = pdf_document_get_orientation;
 629 };
 630
 631 static void
 632 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 633 {
 634         iface->has_document_security = pdf_document_has_document_security;
 635         iface->set_password = pdf_document_set_password;
 636 }
 637
 638 static gdouble
 639 pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
 640 {
 641         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 642         int n_pages;
 643
 644         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 645
 646         return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
 647 }
 648
 649 static gboolean
 650 pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
 651                          int              n_pages)
 652 {
 653         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 654         gboolean result;
 655
 656         g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);
 657
 658         if (pdf_document->font_info == NULL) {
 659                 pdf_document->font_info = poppler_font_info_new (pdf_document->document);
 660         }
 661
 662         if (pdf_document->fonts_iter) {
 663                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 664         }
 665
 666         pdf_document->fonts_scanned_pages += n_pages;
 667
 668         result = poppler_font_info_scan (pdf_document->font_info, n_pages,
 669                                          &pdf_document->fonts_iter);
 670         if (!result) {
 671                 pdf_document->fonts_scanned_pages = 0;
 672                 poppler_font_info_free (pdf_document->font_info);
 673                 pdf_document->font_info = NULL;
 674         }
 675
 676         return result;
 677 }
 678
 679 static void
 680 pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
 681                                GtkTreeModel    *model)
 682 {
 683         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 684         PopplerFontsIter *iter = pdf_document->fonts_iter;
 685
 686         g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));
 687
 688         if (iter) {
 689                 do {
 690                         GtkTreeIter list_iter;
 691                         const char *name;
 692
 693                         name = poppler_fonts_iter_get_name (iter);
 694                         if (name == NULL) {
 695                                 name = _("No name");
 696                         }
 697
 698                         gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
 699                         gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
 700                                             EV_DOCUMENT_FONTS_COLUMN_NAME, name,
 701                                             -1);
 702                 } while (poppler_fonts_iter_next (iter));
 703         }
 704 }
 705
 706 static void
 707 pdf_document_document_fonts_iface_init (EvDocumentFontsIface *iface)
 708 {
 709         iface->fill_model = pdf_document_fonts_fill_model;
 710         iface->scan = pdf_document_fonts_scan;
 711         iface->get_progress = pdf_document_fonts_get_progress;
 712 }
 713
 714 static gboolean
 715 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 716 {
 717         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 718         PopplerIndexIter *iter;
 719
 720         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 721
 722         iter = poppler_index_iter_new (pdf_document->document);
 723         if (iter == NULL)
 724                 return FALSE;
 725         poppler_index_iter_free (iter);
 726
 727         return TRUE;
 728 }
 729
 730 static EvLink *
 731 ev_link_from_action (PopplerAction *action)
 732 {
 733         EvLink *link;
 734         const char *title;
 735
 736         title = action->any.title;
 737
 738         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 739                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 740         } else if (action->type == POPPLER_ACTION_URI) {
 741                 link = ev_link_new_external (title, action->uri.uri);
 742         } else {
 743                 link = ev_link_new_title (title);
 744         }
 745
 746         return link;
 747 }
 748
 749 static void
 750 build_tree (PdfDocument      *pdf_document,
 751             GtkTreeModel     *model,
 752             GtkTreeIter      *parent,
 753             PopplerIndexIter *iter)
 754 {
 755
 756         do {
 757                 GtkTreeIter tree_iter;
 758                 PopplerIndexIter *child;
 759                 PopplerAction *action;
 760                 EvLink *link;
 761                 gboolean expand;
 762
 763                 action = poppler_index_iter_get_action (iter);
 764                 expand = poppler_index_iter_is_open (iter);
 765                 if (action) {
 766                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 767                         link = ev_link_from_action (action);
 768                         poppler_action_free (action);
 769
 770                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 771                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 772                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 773                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
 774                                             -1);
 775                         g_object_unref (link);
 776                         child = poppler_index_iter_get_child (iter);
 777                         if (child)
 778                                 build_tree (pdf_document, model, &tree_iter, child);
 779                         poppler_index_iter_free (child);
 780                 }
 781         } while (poppler_index_iter_next (iter));
 782 }
 783
 784
 785 static GtkTreeModel *
 786 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 787 {
 788         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 789         GtkTreeModel *model = NULL;
 790         PopplerIndexIter *iter;
 791
 792         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 793
 794         iter = poppler_index_iter_new (pdf_document->document);
 795         /* Create the model if we have items*/
 796         if (iter != NULL) {
 797                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 798                                                              G_TYPE_STRING,
 799                                                              G_TYPE_OBJECT,
 800                                                              G_TYPE_BOOLEAN);
 801                 build_tree (pdf_document, model, NULL, iter);
 802                 poppler_index_iter_free (iter);
 803         }
 804
 805         return model;
 806 }
 807
 808 static void
 809 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 810 {
 811         iface->has_document_links = pdf_document_links_has_document_links;
 812         iface->get_links_model = pdf_document_links_get_links_model;
 813 }
 814
 815 static GdkPixbuf *
 816 make_thumbnail_for_size (PdfDocument *pdf_document,
 817                          gint         page,
 818                          gint         size,
 819                          gboolean     border)
 820 {
 821         PopplerPage *poppler_page;
 822         GdkPixbuf *pixbuf;
 823         int width, height;
 824         int x_offset, y_offset;
 825         double scale;
 826         gdouble unscaled_width, unscaled_height;
 827
 828         poppler_page = poppler_document_get_page (pdf_document->document, page);
 829         set_page_orientation (pdf_document, poppler_page);
 830         g_return_val_if_fail (poppler_page != NULL, NULL);
 831
 832         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 833         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 834         scale = width / unscaled_width;
 835
 836         if (border) {
 837                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 838                 x_offset = 1;
 839                 y_offset = 1;
 840         } else {
 841                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 842                                          width, height);
 843                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 844                 x_offset = 0;
 845                 y_offset = 0;
 846         }
 847
 848         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 849                                        width, height,
 850                                        scale, pixbuf,
 851                                        x_offset, y_offset);
 852
 853         g_object_unref (poppler_page);
 854         return pixbuf;
 855 }
 856
 857 static GdkPixbuf *
 858 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 859                                        gint                  page,
 860                                        gint                  size,
 861                                        gboolean              border)
 862 {
 863         PdfDocument *pdf_document;
 864         PopplerPage *poppler_page;
 865         GdkPixbuf *pixbuf;
 866
 867         pdf_document = PDF_DOCUMENT (document_thumbnails);
 868
 869         poppler_page = poppler_document_get_page (pdf_document->document, page);
 870         set_page_orientation (pdf_document, poppler_page);
 871         g_return_val_if_fail (poppler_page != NULL, NULL);
 872
 873         pixbuf = poppler_page_get_thumbnail (poppler_page);
 874
 875         if (pixbuf != NULL) {
 876                 /* The document provides its own thumbnails. */
 877                 if (border) {
 878                         GdkPixbuf *real_pixbuf;
 879
 880                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 881                         g_object_unref (pixbuf);
 882                         pixbuf = real_pixbuf;
 883                 }
 884         } else {
 885                 /* There is no provided thumbnail.  We need to make one. */
 886                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 887         }
 888
 889         g_object_unref (poppler_page);
 890
 891         return pixbuf;
 892 }
 893
 894 static void
 895 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 896                                         gint                  page,
 897                                         gint                  size,
 898                                         gint                 *width,
 899                                         gint                 *height)
 900 {
 901         PdfDocument *pdf_document;
 902         PopplerPage *poppler_page;
 903         gint has_thumb;
 904
 905         pdf_document = PDF_DOCUMENT (document_thumbnails);
 906         poppler_page = poppler_document_get_page (pdf_document->document, page);
 907         set_page_orientation (pdf_document, poppler_page);
 908
 909         g_return_if_fail (width != NULL);
 910         g_return_if_fail (height != NULL);
 911         g_return_if_fail (poppler_page != NULL);
 912
 913         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 914
 915         if (!has_thumb) {
 916                 double page_width, page_height;
 917
 918                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 919                 if (page_width > page_height) {
 920                         *width = size;
 921                         *height = (int) (size * page_height / page_width);
 922                 } else {
 923                         *width = (int) (size * page_width / page_height);
 924                         *height = size;
 925                 }
 926         }
 927         g_object_unref (poppler_page);
 928 }
 929
 930 static void
 931 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 932 {
 933         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 934         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 935 }
 936
 937
 938 static gboolean
 939 pdf_document_search_idle_callback (void *data)
 940 {
 941         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 942         PdfDocument *pdf_document = search->document;
 943         int n_pages;
 944         GList *matches;
 945         PopplerPage *page;
 946
 947         page = poppler_document_get_page (search->document->document,
 948                                           search->search_page);
 949         set_page_orientation (pdf_document, page);
 950
 951         ev_document_doc_mutex_lock ();
 952         matches = poppler_page_find_text (page, search->text);
 953         ev_document_doc_mutex_unlock ();
 954
 955         g_object_unref (page);
 956
 957         search->pages[search->search_page] = matches;
 958         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 959                                   search->search_page);
 960
 961         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 962         search->search_page += 1;
 963         if (search->search_page == n_pages) {
 964                 /* wrap around */
 965                 search->search_page = 0;
 966         }
 967
 968         if (search->search_page != search->start_page) {
 969                 return TRUE;
 970         }
 971
 972         /* We're done. */
 973         search->idle = 0; /* will return FALSE to remove */
 974         return FALSE;
 975 }
 976
 977
 978 static PdfDocumentSearch *
 979 pdf_document_search_new (PdfDocument *pdf_document,
 980                          int          start_page,
 981                          const char  *text)
 982 {
 983         PdfDocumentSearch *search;
 984         int n_pages;
 985         int i;
 986
 987         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 988
 989         search = g_new0 (PdfDocumentSearch, 1);
 990
 991         search->text = g_strdup (text);
 992         search->pages = g_new0 (GList *, n_pages);
 993         for (i = 0; i < n_pages; i++) {
 994                 search->pages[i] = NULL;
 995         }
 996
 997         search->document = pdf_document;
 998
 999         /* We add at low priority so the progress bar repaints */
1000         search->idle = g_idle_add_full (G_PRIORITY_LOW,
1001                                         pdf_document_search_idle_callback,
1002                                         search,
1003                                         NULL);
1004
1005         search->start_page = start_page;
1006         search->search_page = start_page;
1007
1008         return search;
1009 }
1010
1011 static void
1012 pdf_document_find_begin (EvDocumentFind   *document,
1013                          int               page,
1014                          const char       *search_string,
1015                          gboolean          case_sensitive)
1016 {
1017         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1018
1019         /* FIXME handle case_sensitive (right now XPDF
1020          * code is always case insensitive for ASCII
1021          * and case sensitive for all other languaages)
1022          */
1023
1024         if (pdf_document->search &&
1025             strcmp (search_string, pdf_document->search->text) == 0)
1026                 return;
1027
1028         if (pdf_document->search)
1029                 pdf_document_search_free (pdf_document->search);
1030
1031         pdf_document->search = pdf_document_search_new (pdf_document,
1032                                                         page,
1033                                                         search_string);
1034 }
1035
1036 int
1037 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
1038 {
1039         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1040
1041         if (search) {
1042                 return g_list_length (search->pages[page]);
1043         } else {
1044                 return 0;
1045         }
1046 }
1047
1048 gboolean
1049 pdf_document_find_get_result (EvDocumentFind *document_find,
1050                               int             page,
1051                               int             n_result,
1052                               EvRectangle    *rectangle)
1053 {
1054         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1055         PdfDocumentSearch *search = pdf_document->search;
1056         PopplerPage *poppler_page;
1057         PopplerRectangle *r;
1058         double height;
1059
1060         if (search == NULL)
1061                 return FALSE;
1062
1063         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1064                                                   n_result);
1065         if (r == NULL)
1066                 return FALSE;
1067
1068         poppler_page = poppler_document_get_page (pdf_document->document, page);
1069         set_page_orientation (pdf_document, poppler_page);
1070         poppler_page_get_size (poppler_page, NULL, &height);
1071         rectangle->x1 = r->x1;
1072         rectangle->y1 = height - r->y2;
1073         rectangle->x2 = r->x2;
1074         rectangle->y2 = height - r->y1;
1075         g_object_unref (poppler_page);
1076
1077         return TRUE;
1078 }
1079
1080 int
1081 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1082                                     int             page)
1083 {
1084         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1085
1086         g_return_val_if_fail (search != NULL, FALSE);
1087
1088         return search->pages[page] != NULL;
1089 }
1090
1091 double
1092 pdf_document_find_get_progress (EvDocumentFind *document_find)
1093 {
1094         PdfDocumentSearch *search;
1095         int n_pages, pages_done;
1096
1097         search = PDF_DOCUMENT (document_find)->search;
1098
1099         if (search == NULL) {
1100                 return 0;
1101         }
1102
1103         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1104         if (search->search_page > search->start_page) {
1105                 pages_done = search->search_page - search->start_page + 1;
1106         } else if (search->search_page == search->start_page) {
1107                 pages_done = n_pages;
1108         } else {
1109                 pages_done = n_pages - search->start_page + search->search_page;
1110         }
1111
1112         return pages_done / (double) n_pages;
1113 }
1114
1115 static void
1116 pdf_document_find_cancel (EvDocumentFind *document)
1117 {
1118         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1119
1120         if (pdf_document->search) {
1121                 pdf_document_search_free (pdf_document->search);
1122                 pdf_document->search = NULL;
1123         }
1124 }
1125
1126 static void
1127 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1128 {
1129         iface->begin = pdf_document_find_begin;
1130         iface->get_n_results = pdf_document_find_get_n_results;
1131         iface->get_result = pdf_document_find_get_result;
1132         iface->page_has_results = pdf_document_find_page_has_results;
1133         iface->get_progress = pdf_document_find_get_progress;
1134         iface->cancel = pdf_document_find_cancel;
1135 }
1136
1137 static void
1138 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1139                                 int first_page, int last_page)
1140 {
1141         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1142
1143         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1144                                                      first_page,
1145                                                      last_page - first_page + 1);
1146 }
1147
1148 static void
1149 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
1150 {
1151         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1152         PopplerPage *poppler_page;
1153
1154         g_return_if_fail (pdf_document->ps_file != NULL);
1155
1156         poppler_page = poppler_document_get_page (pdf_document->document, page);
1157         set_page_orientation (pdf_document, poppler_page);
1158         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1159         g_object_unref (poppler_page);
1160 }
1161
1162 static void
1163 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1164 {
1165         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1166
1167         poppler_ps_file_free (pdf_document->ps_file);
1168         pdf_document->ps_file = NULL;
1169 }
1170
1171 static void
1172 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1173 {
1174         iface->begin = pdf_document_ps_exporter_begin;
1175         iface->do_page = pdf_document_ps_exporter_do_page;
1176         iface->end = pdf_document_ps_exporter_end;
1177 }
1178
1179
1180 void
1181 pdf_selection_render_selection (EvSelection      *selection,
1182                                 EvRenderContext  *rc,
1183                                 GdkPixbuf       **pixbuf,
1184                                 EvRectangle      *points,
1185                                 EvRectangle      *old_points)
1186 {
1187         PdfDocument *pdf_document;
1188         PopplerPage *poppler_page;
1189         double width_points, height_points;
1190         gint width, height;
1191
1192         pdf_document = PDF_DOCUMENT (selection);
1193         poppler_page = poppler_document_get_page (pdf_document->document,
1194                                                   rc->page);
1195         set_page_orientation (pdf_document, poppler_page);
1196
1197         poppler_page_get_size (poppler_page, &width_points, &height_points);
1198         width = (int) ((width_points * rc->scale) + 0.5);
1199         height = (int) ((height_points * rc->scale) + 0.5);
1200
1201         if (*pixbuf == NULL) {
1202                 * pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
1203                                            TRUE, 8,
1204                                            width, height);
1205         }
1206
1207         poppler_page_render_selection (poppler_page,
1208                                        rc->scale, *pixbuf,
1209                                        (PopplerRectangle *)points,
1210                                        (PopplerRectangle *)old_points);
1211         g_object_unref (poppler_page);
1212
1213 }
1214
1215
1216 GdkRegion *
1217 pdf_selection_get_selection_region (EvSelection     *selection,
1218                                     EvRenderContext *rc,
1219                                     EvRectangle     *points)
1220 {
1221         PdfDocument *pdf_document;
1222         PopplerPage *poppler_page;
1223         GdkRegion *retval;
1224
1225         pdf_document = PDF_DOCUMENT (selection);
1226         poppler_page = poppler_document_get_page (pdf_document->document,
1227                                                   rc->page);
1228         set_page_orientation (pdf_document, poppler_page);
1229
1230         retval = poppler_page_get_selection_region (poppler_page, rc->scale, (PopplerRectangle *) points);
1231         g_object_unref (poppler_page);
1232
1233         return retval;
1234 }
1235
1236 static void
1237 pdf_selection_iface_init (EvSelectionIface *iface)
1238 {
1239         iface->render_selection = pdf_selection_render_selection;
1240         iface->get_selection_region = pdf_selection_get_selection_region;
1241 }
1242
1243 PdfDocument *
1244 pdf_document_new (void)
1245 {
1246         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1247 }