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