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