pdf/ev-poppler.cc

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* pdfdocument.h: Implementation of EvDocument for PDF
   3  * Copyright (C) 2004, Red Hat, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <math.h>
  21 #include <string.h>
  22 #include <gtk/gtk.h>
  23 #include <poppler.h>
  24 #include <poppler-document.h>
  25 #include <poppler-page.h>
  26 #include <glib/gi18n.h>
  27
  28 #include "ev-poppler.h"
  29 #include "ev-ps-exporter.h"
  30 #include "ev-document-find.h"
  31 #include "ev-document-misc.h"
  32 #include "ev-document-links.h"
  33 #include "ev-document-fonts.h"
  34 #include "ev-document-security.h"
  35 #include "ev-document-thumbnails.h"
  36 #include "ev-selection.h"
  37
  38 typedef struct {
  39         PdfDocument *document;
  40         char *text;
  41         GList **pages;
  42         guint idle;
  43         int start_page;
  44         int search_page;
  45 } PdfDocumentSearch;
  46
  47 struct _PdfDocumentClass
  48 {
  49         GObjectClass parent_class;
  50 };
  51
  52 struct _PdfDocument
  53 {
  54         GObject parent_instance;
  55
  56         PopplerDocument *document;
  57         PopplerPSFile *ps_file;
  58         gchar *password;
  59
  60         PopplerOrientation orientation;
  61         gboolean orientation_set;
  62
  63         PopplerFontInfo *font_info;
  64         PopplerFontsIter *fonts_iter;
  65         int fonts_scanned_pages;
  66
  67         PdfDocumentSearch *search;
  68 };
  69
  70 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
  71 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
  72 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  73 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
  74 static void pdf_document_document_fonts_iface_init      (EvDocumentFontsIface      *iface);
  75 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
  76 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  77 static void pdf_selection_iface_init                    (EvSelectionIface          *iface);
  78 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
  79                                                          gint                       page,
  80                                                          gint                       size,
  81                                                          gint                      *width,
  82                                                          gint                      *height);
  83 static int  pdf_document_get_n_pages                    (EvDocument                *document);
  84
  85 static EvLink * ev_link_from_action (PopplerAction *action);
  86 static void pdf_document_search_free (PdfDocumentSearch   *search);
  87
  88
  89 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  90                          {
  91                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  92                                                         pdf_document_document_iface_init);
  93                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  94                                                         pdf_document_security_iface_init);
  95                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  96                                                         pdf_document_document_thumbnails_iface_init);
  97                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  98                                                         pdf_document_document_links_iface_init);
  99                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
 100                                                         pdf_document_document_fonts_iface_init);
 101                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
 102                                                         pdf_document_find_iface_init);
 103                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
 104                                                         pdf_document_ps_exporter_iface_init);
 105                                  G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
 106                                                         pdf_selection_iface_init);
 107                          });
 108
 109 static void
 110 pdf_document_search_free (PdfDocumentSearch   *search)
 111 {
 112         PdfDocument *pdf_document = search->document;
 113         int n_pages;
 114         int i;
 115
 116         if (search->idle != 0)
 117                 g_source_remove (search->idle);
 118
 119         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 120         for (i = 0; i < n_pages; i++) {
 121                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 122                 g_list_free (search->pages[i]);
 123         }
 124
 125         g_free (search->text);
 126 }
 127
 128 static void
 129 pdf_document_dispose (GObject *object)
 130 {
 131         PdfDocument *pdf_document = PDF_DOCUMENT(object);
 132
 133         if (pdf_document->search) {
 134                 pdf_document_search_free (pdf_document->search);
 135                 pdf_document->search = NULL;
 136         }
 137
 138         if (pdf_document->document) {
 139                 g_object_unref (pdf_document->document);
 140         }
 141
 142         if (pdf_document->font_info) {
 143                 poppler_font_info_free (pdf_document->font_info);
 144         }
 145
 146         if (pdf_document->fonts_iter) {
 147                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 148         }
 149 }
 150
 151 static void
 152 pdf_document_class_init (PdfDocumentClass *klass)
 153 {
 154         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
 155
 156         g_object_class->dispose = pdf_document_dispose;
 157 }
 158
 159 static void
 160 pdf_document_init (PdfDocument *pdf_document)
 161 {
 162         pdf_document->password = NULL;
 163 }
 164
 165 static void
 166 convert_error (GError  *poppler_error,
 167                GError **error)
 168 {
 169         if (poppler_error == NULL)
 170                 return;
 171
 172         if (poppler_error->domain == POPPLER_ERROR) {
 173                 /* convert poppler errors into EvDocument errors */
 174                 gint code = EV_DOCUMENT_ERROR_INVALID;
 175                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 176                         code = EV_DOCUMENT_ERROR_INVALID;
 177                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 178                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 179
 180
 181                 g_set_error (error,
 182                              EV_DOCUMENT_ERROR,
 183                              code,
 184                              poppler_error->message,
 185                              NULL);
 186         } else {
 187                 g_propagate_error (error, poppler_error);
 188         }
 189 }
 190
 191
 192 /* EvDocument */
 193 static gboolean
 194 pdf_document_save (EvDocument  *document,
 195                    const char  *uri,
 196                    GError     **error)
 197 {
 198         gboolean retval;
 199         GError *poppler_error = NULL;
 200
 201         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 202                                         uri,
 203                                         &poppler_error);
 204         if (! retval)
 205                 convert_error (poppler_error, error);
 206
 207         return retval;
 208 }
 209
 210 static PopplerOrientation
 211 get_document_orientation (PdfDocument *pdf_document)
 212 {
 213         PopplerOrientation orientation;
 214         PopplerPage *page;
 215
 216         /* Should prolly be smarter here and check more than first page */
 217         page = poppler_document_get_page (pdf_document->document, 0);
 218         if (page) {
 219                 orientation = poppler_page_get_orientation (page);
 220         } else {
 221                 orientation = POPPLER_ORIENTATION_PORTRAIT;
 222         }
 223         g_object_unref (page);
 224
 225         return orientation;
 226 }
 227
 228 static gboolean
 229 pdf_document_load (EvDocument   *document,
 230                    const char   *uri,
 231                    GError      **error)
 232 {
 233         GError *poppler_error = NULL;
 234         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 235
 236         pdf_document->document =
 237                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 238
 239         if (pdf_document->document == NULL) {
 240                 convert_error (poppler_error, error);
 241                 return FALSE;
 242         }
 243
 244         return TRUE;
 245 }
 246
 247 static int
 248 pdf_document_get_n_pages (EvDocument *document)
 249 {
 250         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 251 }
 252
 253 /* FIXME This should not be necessary, poppler should rember it */
 254 static void
 255 set_page_orientation (PdfDocument *pdf_document, PopplerPage *page)
 256 {
 257         if (pdf_document->orientation_set) {
 258                 poppler_page_set_orientation (page, pdf_document->orientation);
 259         }
 260 }
 261
 262 static void
 263 pdf_document_get_page_size (EvDocument   *document,
 264                             int           page,
 265                             double       *width,
 266                             double       *height)
 267 {
 268         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 269         PopplerPage *poppler_page;
 270
 271         poppler_page = poppler_document_get_page (pdf_document->document, page);
 272         set_page_orientation (pdf_document, poppler_page);
 273         poppler_page_get_size (poppler_page, width, height);
 274         g_object_unref (poppler_page);
 275 }
 276
 277 static char *
 278 pdf_document_get_page_label (EvDocument *document,
 279                              int         page)
 280 {
 281         PopplerPage *poppler_page;
 282         char *label = NULL;
 283
 284         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 285                                                   page);
 286
 287         g_object_get (G_OBJECT (poppler_page),
 288                       "label", &label,
 289                       NULL);
 290         g_object_unref (poppler_page);
 291
 292         return label;
 293 }
 294
 295 static GList *
 296 pdf_document_get_links (EvDocument *document,
 297                         int         page)
 298 {
 299         PdfDocument *pdf_document;
 300         PopplerPage *poppler_page;
 301         GList *retval = NULL;
 302         GList *mapping_list;
 303         GList *list;
 304         double height;
 305
 306         pdf_document = PDF_DOCUMENT (document);
 307         poppler_page = poppler_document_get_page (pdf_document->document,
 308                                                   page);
 309         mapping_list = poppler_page_get_link_mapping (poppler_page);
 310         poppler_page_get_size (poppler_page, NULL, &height);
 311
 312         for (list = mapping_list; list; list = list->next) {
 313                 PopplerLinkMapping *link_mapping;
 314                 EvLinkMapping *ev_link_mapping;
 315
 316                 link_mapping = (PopplerLinkMapping *)list->data;
 317                 ev_link_mapping = g_new (EvLinkMapping, 1);
 318                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 319                 ev_link_mapping->x1 = link_mapping->area.x1;
 320                 ev_link_mapping->x2 = link_mapping->area.x2;
 321                 /* Invert this for X-style coordinates */
 322                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 323                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 324
 325                 retval = g_list_prepend (retval, ev_link_mapping);
 326         }
 327
 328         poppler_page_free_link_mapping (mapping_list);
 329         g_object_unref (poppler_page);
 330
 331         return g_list_reverse (retval);
 332 }
 333
 334
 335 static GdkPixbuf *
 336 pdf_document_render_pixbuf (EvDocument   *document,
 337                             EvRenderContext *rc)
 338 {
 339         PdfDocument *pdf_document;
 340         PopplerPage *poppler_page;
 341         GdkPixbuf *pixbuf;
 342         double width_points, height_points;
 343         gint width, height;
 344
 345         pdf_document = PDF_DOCUMENT (document);
 346         poppler_page = poppler_document_get_page (pdf_document->document,
 347                                                   rc->page);
 348         set_page_orientation (pdf_document, poppler_page);
 349
 350         poppler_page_get_size (poppler_page, &width_points, &height_points);
 351         width = (int) ((width_points * rc->scale) + 0.5);
 352         height = (int) ((height_points * rc->scale) + 0.5);
 353
 354         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 355                                  FALSE, 8,
 356                                  width, height);
 357
 358         poppler_page_render_to_pixbuf (poppler_page,
 359                                        0, 0,
 360                                        width, height,
 361                                        rc->scale,
 362                                        pixbuf);
 363
 364         g_object_unref (poppler_page);
 365
 366         return pixbuf;
 367 }
 368
 369 /* EvDocumentSecurity */
 370
 371 static gboolean
 372 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 373 {
 374         /* FIXME: do we really need to have this? */
 375         return FALSE;
 376 }
 377
 378 static void
 379 pdf_document_set_password (EvDocumentSecurity *document_security,
 380                            const char         *password)
 381 {
 382         PdfDocument *document = PDF_DOCUMENT (document_security);
 383
 384         if (document->password)
 385                 g_free (document->password);
 386
 387         document->password = g_strdup (password);
 388 }
 389
 390 static gboolean
 391 pdf_document_can_get_text (EvDocument *document)
 392 {
 393         return TRUE;
 394 }
 395
 396 static EvDocumentInfo *
 397 pdf_document_get_info (EvDocument *document)
 398 {
 399         EvDocumentInfo *info;
 400         PopplerPageLayout layout;
 401         PopplerPageMode mode;
 402         PopplerViewerPreferences view_prefs;
 403         PopplerPermissions permissions;
 404
 405         info = g_new0 (EvDocumentInfo, 1);
 406
 407         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 408                             EV_DOCUMENT_INFO_FORMAT |
 409                             EV_DOCUMENT_INFO_AUTHOR |
 410                             EV_DOCUMENT_INFO_SUBJECT |
 411                             EV_DOCUMENT_INFO_KEYWORDS |
 412                             EV_DOCUMENT_INFO_LAYOUT |
 413                             EV_DOCUMENT_INFO_START_MODE |
 414                             EV_DOCUMENT_INFO_PERMISSIONS |
 415                             EV_DOCUMENT_INFO_UI_HINTS |
 416                             EV_DOCUMENT_INFO_CREATOR |
 417                             EV_DOCUMENT_INFO_PRODUCER |
 418                             EV_DOCUMENT_INFO_CREATION_DATE |
 419                             EV_DOCUMENT_INFO_MOD_DATE |
 420                             EV_DOCUMENT_INFO_LINEARIZED |
 421                             EV_DOCUMENT_INFO_N_PAGES |
 422                             EV_DOCUMENT_INFO_SECURITY;
 423
 424
 425         g_object_get (PDF_DOCUMENT (document)->document,
 426                       "title", &(info->title),
 427                       "format", &(info->format),
 428                       "author", &(info->author),
 429                       "subject", &(info->subject),
 430                       "keywords", &(info->keywords),
 431                       "page-mode", &mode,
 432                       "page-layout", &layout,
 433                       "viewer-preferences", &view_prefs,
 434                       "permissions", &permissions,
 435                       "creator", &(info->creator),
 436                       "producer", &(info->producer),
 437                       "creation-date", &(info->creation_date),
 438                       "mod-date", &(info->modified_date),
 439                       "linearized", &(info->linearized),
 440                       NULL);
 441
 442         switch (layout) {
 443                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 444                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 445                         break;
 446                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 447                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 448                         break;
 449                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 450                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 451                         break;
 452                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 453                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 454                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 455                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 456                         break;
 457                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 458                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 459                         break;
 460                 default:
 461                         break;
 462         }
 463
 464         switch (mode) {
 465                 case POPPLER_PAGE_MODE_NONE:
 466                         info->mode = EV_DOCUMENT_MODE_NONE;
 467                         break;
 468                 case POPPLER_PAGE_MODE_USE_THUMBS:
 469                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 470                         break;
 471                 case POPPLER_PAGE_MODE_USE_OC:
 472                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 473                         break;
 474                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 475                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 476                         break;
 477                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 478                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 479                 default:
 480                         break;
 481         }
 482
 483         info->ui_hints = 0;
 484         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 485                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 486         }
 487         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 488                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 489         }
 490         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 491                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 492         }
 493         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 494                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 495         }
 496         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 497                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 498         }
 499         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 500                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 501         }
 502         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 503                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 504         }
 505
 506         info->permissions = 0;
 507         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 508                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 509         }
 510         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 511                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 512         }
 513         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 514                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 515         }
 516         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 517                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 518         }
 519
 520         info->n_pages = ev_document_get_n_pages (document);
 521
 522         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
 523                 /* translators: this is the document security state */
 524                 info->security = g_strdup (_("Yes"));
 525         } else {
 526                 /* translators: this is the document security state */
 527                 info->security = g_strdup (_("No"));
 528         }
 529
 530         return info;
 531 }
 532
 533 static char *
 534 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 535 {
 536         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 537         PopplerPage *poppler_page;
 538         PopplerRectangle r;
 539         double height;
 540         char *text;
 541
 542         poppler_page = poppler_document_get_page (pdf_document->document, page);
 543         set_page_orientation (pdf_document, poppler_page);
 544         g_return_val_if_fail (poppler_page != NULL, NULL);
 545
 546         poppler_page_get_size (poppler_page, NULL, &height);
 547         r.x1 = rect->x1;
 548         r.y1 = height - rect->y2;
 549         r.x2 = rect->x2;
 550         r.y2 = height - rect->y1;
 551
 552         text = poppler_page_get_text (poppler_page, &r);
 553
 554         g_object_unref (poppler_page);
 555
 556         return text;
 557 }
 558
 559 static EvOrientation
 560 pdf_document_get_orientation (EvDocument *document)
 561 {
 562         EvOrientation result;
 563         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 564
 565         if (!pdf_document->orientation_set) {
 566                 pdf_document->orientation = get_document_orientation (pdf_document);
 567         }
 568
 569         switch (pdf_document->orientation) {
 570         case POPPLER_ORIENTATION_PORTRAIT:
 571                 result = EV_ORIENTATION_PORTRAIT;
 572                 break;
 573         case POPPLER_ORIENTATION_LANDSCAPE:
 574                 result = EV_ORIENTATION_LANDSCAPE;
 575                 break;
 576         case POPPLER_ORIENTATION_UPSIDEDOWN:
 577                 result = EV_ORIENTATION_UPSIDEDOWN;
 578                 break;
 579         case POPPLER_ORIENTATION_SEASCAPE:
 580                 result = EV_ORIENTATION_SEASCAPE;
 581                 break;
 582         default:
 583                 g_assert_not_reached ();
 584         }
 585
 586         return result;
 587 }
 588
 589 static void
 590 pdf_document_set_orientation (EvDocument *document, EvOrientation orientation)
 591 {
 592         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 593         PopplerOrientation poppler_orientation;
 594
 595         switch (orientation) {
 596         case EV_ORIENTATION_PORTRAIT:
 597                 poppler_orientation = POPPLER_ORIENTATION_PORTRAIT;
 598                 break;
 599         case EV_ORIENTATION_LANDSCAPE:
 600                 poppler_orientation = POPPLER_ORIENTATION_LANDSCAPE;
 601                 break;
 602         case EV_ORIENTATION_UPSIDEDOWN:
 603                 poppler_orientation = POPPLER_ORIENTATION_UPSIDEDOWN;
 604                 break;
 605         case EV_ORIENTATION_SEASCAPE:
 606                 poppler_orientation = POPPLER_ORIENTATION_SEASCAPE;
 607                 break;
 608         default:
 609                 g_assert_not_reached ();
 610         }
 611
 612         pdf_document->orientation = poppler_orientation;
 613         pdf_document->orientation_set = TRUE;
 614 }
 615
 616 static void
 617 pdf_document_document_iface_init (EvDocumentIface *iface)
 618 {
 619         iface->save = pdf_document_save;
 620         iface->load = pdf_document_load;
 621         iface->get_n_pages = pdf_document_get_n_pages;
 622         iface->get_page_size = pdf_document_get_page_size;
 623         iface->get_page_label = pdf_document_get_page_label;
 624         iface->get_links = pdf_document_get_links;
 625         iface->render_pixbuf = pdf_document_render_pixbuf;
 626         iface->get_text = pdf_document_get_text;
 627         iface->can_get_text = pdf_document_can_get_text;
 628         iface->get_info = pdf_document_get_info;
 629         iface->set_orientation = pdf_document_set_orientation;
 630         iface->get_orientation = pdf_document_get_orientation;
 631 };
 632
 633 static void
 634 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 635 {
 636         iface->has_document_security = pdf_document_has_document_security;
 637         iface->set_password = pdf_document_set_password;
 638 }
 639
 640 static gdouble
 641 pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
 642 {
 643         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 644         int n_pages;
 645
 646         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 647
 648         return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
 649 }
 650
 651 static gboolean
 652 pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
 653                          int              n_pages)
 654 {
 655         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 656         gboolean result;
 657
 658         g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);
 659
 660         if (pdf_document->font_info == NULL) {
 661                 pdf_document->font_info = poppler_font_info_new (pdf_document->document);
 662         }
 663
 664         if (pdf_document->fonts_iter) {
 665                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 666         }
 667
 668         pdf_document->fonts_scanned_pages += n_pages;
 669
 670         result = poppler_font_info_scan (pdf_document->font_info, n_pages,
 671                                          &pdf_document->fonts_iter);
 672         if (!result) {
 673                 pdf_document->fonts_scanned_pages = 0;
 674                 poppler_font_info_free (pdf_document->font_info);
 675                 pdf_document->font_info = NULL;
 676         }
 677
 678         return result;
 679 }
 680
 681 static void
 682 pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
 683                                GtkTreeModel    *model)
 684 {
 685         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 686         PopplerFontsIter *iter = pdf_document->fonts_iter;
 687
 688         g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));
 689
 690         if (iter) {
 691                 do {
 692                         GtkTreeIter list_iter;
 693                         const char *name;
 694
 695                         name = poppler_fonts_iter_get_name (iter);
 696                         if (name == NULL) {
 697                                 name = _("No name");
 698                         }
 699
 700                         gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
 701                         gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
 702                                             EV_DOCUMENT_FONTS_COLUMN_NAME, name,
 703                                             -1);
 704                 } while (poppler_fonts_iter_next (iter));
 705         }
 706 }
 707
 708 static void
 709 pdf_document_document_fonts_iface_init (EvDocumentFontsIface *iface)
 710 {
 711         iface->fill_model = pdf_document_fonts_fill_model;
 712         iface->scan = pdf_document_fonts_scan;
 713         iface->get_progress = pdf_document_fonts_get_progress;
 714 }
 715
 716 static gboolean
 717 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 718 {
 719         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 720         PopplerIndexIter *iter;
 721
 722         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 723
 724         iter = poppler_index_iter_new (pdf_document->document);
 725         if (iter == NULL)
 726                 return FALSE;
 727         poppler_index_iter_free (iter);
 728
 729         return TRUE;
 730 }
 731
 732 static EvLink *
 733 ev_link_from_action (PopplerAction *action)
 734 {
 735         EvLink *link;
 736         const char *title;
 737
 738         title = action->any.title;
 739
 740         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 741                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 742         } else if (action->type == POPPLER_ACTION_URI) {
 743                 link = ev_link_new_external (title, action->uri.uri);
 744         } else {
 745                 link = ev_link_new_title (title);
 746         }
 747
 748         return link;
 749 }
 750
 751 static void
 752 build_tree (PdfDocument      *pdf_document,
 753             GtkTreeModel     *model,
 754             GtkTreeIter      *parent,
 755             PopplerIndexIter *iter)
 756 {
 757
 758         do {
 759                 GtkTreeIter tree_iter;
 760                 PopplerIndexIter *child;
 761                 PopplerAction *action;
 762                 EvLink *link;
 763                 gboolean expand;
 764
 765                 action = poppler_index_iter_get_action (iter);
 766                 expand = poppler_index_iter_is_open (iter);
 767                 if (action) {
 768                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 769                         link = ev_link_from_action (action);
 770                         poppler_action_free (action);
 771
 772                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 773                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 774                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 775                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
 776                                             -1);
 777                         g_object_unref (link);
 778                         child = poppler_index_iter_get_child (iter);
 779                         if (child)
 780                                 build_tree (pdf_document, model, &tree_iter, child);
 781                         poppler_index_iter_free (child);
 782                 }
 783         } while (poppler_index_iter_next (iter));
 784 }
 785
 786
 787 static GtkTreeModel *
 788 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 789 {
 790         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 791         GtkTreeModel *model = NULL;
 792         PopplerIndexIter *iter;
 793
 794         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 795
 796         iter = poppler_index_iter_new (pdf_document->document);
 797         /* Create the model if we have items*/
 798         if (iter != NULL) {
 799                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 800                                                              G_TYPE_STRING,
 801                                                              G_TYPE_OBJECT,
 802                                                              G_TYPE_BOOLEAN);
 803                 build_tree (pdf_document, model, NULL, iter);
 804                 poppler_index_iter_free (iter);
 805         }
 806
 807         return model;
 808 }
 809
 810 static void
 811 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 812 {
 813         iface->has_document_links = pdf_document_links_has_document_links;
 814         iface->get_links_model = pdf_document_links_get_links_model;
 815 }
 816
 817 static GdkPixbuf *
 818 make_thumbnail_for_size (PdfDocument *pdf_document,
 819                          gint         page,
 820                          gint         size,
 821                          gboolean     border)
 822 {
 823         PopplerPage *poppler_page;
 824         GdkPixbuf *pixbuf, *sub_pixbuf;
 825         int width, height;
 826         double scale;
 827         gdouble unscaled_width, unscaled_height;
 828
 829         poppler_page = poppler_document_get_page (pdf_document->document, page);
 830         set_page_orientation (pdf_document, poppler_page);
 831         g_return_val_if_fail (poppler_page != NULL, NULL);
 832
 833         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 834         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 835         scale = width / unscaled_width;
 836
 837         if (border) {
 838                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 839
 840                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
 841                                                        1, 1,
 842                                                        width - 1, height - 1);
 843         } else {
 844                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 845                                          width, height);
 846                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 847                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
 848                                                        0, 0,
 849                                                        width, height);
 850         }
 851
 852         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 853                                        width, height,
 854                                        scale, sub_pixbuf);
 855
 856         g_object_unref (G_OBJECT (sub_pixbuf));
 857
 858         g_object_unref (poppler_page);
 859         return pixbuf;
 860 }
 861
 862 static GdkPixbuf *
 863 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 864                                        gint                  page,
 865                                        gint                  size,
 866                                        gboolean              border)
 867 {
 868         PdfDocument *pdf_document;
 869         PopplerPage *poppler_page;
 870         GdkPixbuf *pixbuf;
 871
 872         pdf_document = PDF_DOCUMENT (document_thumbnails);
 873
 874         poppler_page = poppler_document_get_page (pdf_document->document, page);
 875         set_page_orientation (pdf_document, poppler_page);
 876         g_return_val_if_fail (poppler_page != NULL, NULL);
 877
 878         pixbuf = poppler_page_get_thumbnail (poppler_page);
 879
 880         if (pixbuf != NULL) {
 881                 /* The document provides its own thumbnails. */
 882                 if (border) {
 883                         GdkPixbuf *real_pixbuf;
 884
 885                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 886                         g_object_unref (pixbuf);
 887                         pixbuf = real_pixbuf;
 888                 }
 889         } else {
 890                 /* There is no provided thumbnail.  We need to make one. */
 891                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 892         }
 893
 894         g_object_unref (poppler_page);
 895
 896         return pixbuf;
 897 }
 898
 899 static void
 900 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 901                                         gint                  page,
 902                                         gint                  size,
 903                                         gint                 *width,
 904                                         gint                 *height)
 905 {
 906         PdfDocument *pdf_document;
 907         PopplerPage *poppler_page;
 908         gint has_thumb;
 909
 910         pdf_document = PDF_DOCUMENT (document_thumbnails);
 911         poppler_page = poppler_document_get_page (pdf_document->document, page);
 912         set_page_orientation (pdf_document, poppler_page);
 913
 914         g_return_if_fail (width != NULL);
 915         g_return_if_fail (height != NULL);
 916         g_return_if_fail (poppler_page != NULL);
 917
 918         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 919
 920         if (!has_thumb) {
 921                 double page_width, page_height;
 922
 923                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 924                 if (page_width > page_height) {
 925                         *width = size;
 926                         *height = (int) (size * page_height / page_width);
 927                 } else {
 928                         *width = (int) (size * page_width / page_height);
 929                         *height = size;
 930                 }
 931         }
 932         g_object_unref (poppler_page);
 933 }
 934
 935 static void
 936 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 937 {
 938         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 939         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 940 }
 941
 942
 943 static gboolean
 944 pdf_document_search_idle_callback (void *data)
 945 {
 946         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 947         PdfDocument *pdf_document = search->document;
 948         int n_pages;
 949         GList *matches;
 950         PopplerPage *page;
 951
 952         page = poppler_document_get_page (search->document->document,
 953                                           search->search_page);
 954         set_page_orientation (pdf_document, page);
 955
 956         ev_document_doc_mutex_lock ();
 957         matches = poppler_page_find_text (page, search->text);
 958         ev_document_doc_mutex_unlock ();
 959
 960         g_object_unref (page);
 961
 962         search->pages[search->search_page] = matches;
 963         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 964                                   search->search_page);
 965
 966         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 967         search->search_page += 1;
 968         if (search->search_page == n_pages) {
 969                 /* wrap around */
 970                 search->search_page = 0;
 971         }
 972
 973         if (search->search_page != search->start_page) {
 974                 return TRUE;
 975         }
 976
 977         /* We're done. */
 978         search->idle = 0; /* will return FALSE to remove */
 979         return FALSE;
 980 }
 981
 982
 983 static PdfDocumentSearch *
 984 pdf_document_search_new (PdfDocument *pdf_document,
 985                          int          start_page,
 986                          const char  *text)
 987 {
 988         PdfDocumentSearch *search;
 989         int n_pages;
 990         int i;
 991
 992         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 993
 994         search = g_new0 (PdfDocumentSearch, 1);
 995
 996         search->text = g_strdup (text);
 997         search->pages = g_new0 (GList *, n_pages);
 998         for (i = 0; i < n_pages; i++) {
 999                 search->pages[i] = NULL;
1000         }
1001
1002         search->document = pdf_document;
1003
1004         /* We add at low priority so the progress bar repaints */
1005         search->idle = g_idle_add_full (G_PRIORITY_LOW,
1006                                         pdf_document_search_idle_callback,
1007                                         search,
1008                                         NULL);
1009
1010         search->start_page = start_page;
1011         search->search_page = start_page;
1012
1013         return search;
1014 }
1015
1016 static void
1017 pdf_document_find_begin (EvDocumentFind   *document,
1018                          int               page,
1019                          const char       *search_string,
1020                          gboolean          case_sensitive)
1021 {
1022         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1023
1024         /* FIXME handle case_sensitive (right now XPDF
1025          * code is always case insensitive for ASCII
1026          * and case sensitive for all other languaages)
1027          */
1028
1029         if (pdf_document->search &&
1030             strcmp (search_string, pdf_document->search->text) == 0)
1031                 return;
1032
1033         if (pdf_document->search)
1034                 pdf_document_search_free (pdf_document->search);
1035
1036         pdf_document->search = pdf_document_search_new (pdf_document,
1037                                                         page,
1038                                                         search_string);
1039 }
1040
1041 int
1042 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
1043 {
1044         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1045
1046         if (search) {
1047                 return g_list_length (search->pages[page]);
1048         } else {
1049                 return 0;
1050         }
1051 }
1052
1053 gboolean
1054 pdf_document_find_get_result (EvDocumentFind *document_find,
1055                               int             page,
1056                               int             n_result,
1057                               EvRectangle    *rectangle)
1058 {
1059         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1060         PdfDocumentSearch *search = pdf_document->search;
1061         PopplerPage *poppler_page;
1062         PopplerRectangle *r;
1063         double height;
1064
1065         if (search == NULL)
1066                 return FALSE;
1067
1068         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1069                                                   n_result);
1070         if (r == NULL)
1071                 return FALSE;
1072
1073         poppler_page = poppler_document_get_page (pdf_document->document, page);
1074         set_page_orientation (pdf_document, poppler_page);
1075         poppler_page_get_size (poppler_page, NULL, &height);
1076         rectangle->x1 = r->x1;
1077         rectangle->y1 = height - r->y2;
1078         rectangle->x2 = r->x2;
1079         rectangle->y2 = height - r->y1;
1080         g_object_unref (poppler_page);
1081
1082         return TRUE;
1083 }
1084
1085 int
1086 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1087                                     int             page)
1088 {
1089         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1090
1091         g_return_val_if_fail (search != NULL, FALSE);
1092
1093         return search->pages[page] != NULL;
1094 }
1095
1096 double
1097 pdf_document_find_get_progress (EvDocumentFind *document_find)
1098 {
1099         PdfDocumentSearch *search;
1100         int n_pages, pages_done;
1101
1102         search = PDF_DOCUMENT (document_find)->search;
1103
1104         if (search == NULL) {
1105                 return 0;
1106         }
1107
1108         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1109         if (search->search_page > search->start_page) {
1110                 pages_done = search->search_page - search->start_page + 1;
1111         } else if (search->search_page == search->start_page) {
1112                 pages_done = n_pages;
1113         } else {
1114                 pages_done = n_pages - search->start_page + search->search_page;
1115         }
1116
1117         return pages_done / (double) n_pages;
1118 }
1119
1120 static void
1121 pdf_document_find_cancel (EvDocumentFind *document)
1122 {
1123         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1124
1125         if (pdf_document->search) {
1126                 pdf_document_search_free (pdf_document->search);
1127                 pdf_document->search = NULL;
1128         }
1129 }
1130
1131 static void
1132 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1133 {
1134         iface->begin = pdf_document_find_begin;
1135         iface->get_n_results = pdf_document_find_get_n_results;
1136         iface->get_result = pdf_document_find_get_result;
1137         iface->page_has_results = pdf_document_find_page_has_results;
1138         iface->get_progress = pdf_document_find_get_progress;
1139         iface->cancel = pdf_document_find_cancel;
1140 }
1141
1142 static void
1143 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1144                                 int first_page, int last_page)
1145 {
1146         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1147
1148         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1149                                                      first_page,
1150                                                      last_page - first_page + 1);
1151 }
1152
1153 static void
1154 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
1155 {
1156         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1157         PopplerPage *poppler_page;
1158
1159         g_return_if_fail (pdf_document->ps_file != NULL);
1160
1161         poppler_page = poppler_document_get_page (pdf_document->document, page);
1162         set_page_orientation (pdf_document, poppler_page);
1163         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1164         g_object_unref (poppler_page);
1165 }
1166
1167 static void
1168 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1169 {
1170         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1171
1172         poppler_ps_file_free (pdf_document->ps_file);
1173         pdf_document->ps_file = NULL;
1174 }
1175
1176 static void
1177 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1178 {
1179         iface->begin = pdf_document_ps_exporter_begin;
1180         iface->do_page = pdf_document_ps_exporter_do_page;
1181         iface->end = pdf_document_ps_exporter_end;
1182 }
1183
1184
1185 void
1186 pdf_selection_render_selection (EvSelection      *selection,
1187                                 EvRenderContext  *rc,
1188                                 GdkPixbuf       **pixbuf,
1189                                 EvRectangle      *points,
1190                                 EvRectangle      *old_points)
1191 {
1192         PdfDocument *pdf_document;
1193         PopplerPage *poppler_page;
1194         double width_points, height_points;
1195         gint width, height;
1196
1197         pdf_document = PDF_DOCUMENT (selection);
1198         poppler_page = poppler_document_get_page (pdf_document->document,
1199                                                   rc->page);
1200         set_page_orientation (pdf_document, poppler_page);
1201
1202         poppler_page_get_size (poppler_page, &width_points, &height_points);
1203         width = (int) ((width_points * rc->scale) + 0.5);
1204         height = (int) ((height_points * rc->scale) + 0.5);
1205
1206         if (*pixbuf == NULL) {
1207                 * pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
1208                                            TRUE, 8,
1209                                            width, height);
1210         }
1211
1212         poppler_page_render_selection (poppler_page,
1213                                        rc->scale, *pixbuf,
1214                                        (PopplerRectangle *)points,
1215                                        (PopplerRectangle *)old_points);
1216         g_object_unref (poppler_page);
1217
1218 }
1219
1220
1221 GdkRegion *
1222 pdf_selection_get_selection_region (EvSelection     *selection,
1223                                     EvRenderContext *rc,
1224                                     EvRectangle     *points)
1225 {
1226         PdfDocument *pdf_document;
1227         PopplerPage *poppler_page;
1228         GdkRegion *retval;
1229
1230         pdf_document = PDF_DOCUMENT (selection);
1231         poppler_page = poppler_document_get_page (pdf_document->document,
1232                                                   rc->page);
1233         set_page_orientation (pdf_document, poppler_page);
1234
1235         retval = poppler_page_get_selection_region (poppler_page, rc->scale, (PopplerRectangle *) points);
1236         g_object_unref (poppler_page);
1237
1238         return retval;
1239 }
1240
1241 GdkRegion *
1242 pdf_selection_get_selection_map (EvSelection     *selection,
1243                                  EvRenderContext *rc)
1244 {
1245         PdfDocument *pdf_document;
1246         PopplerPage *poppler_page;
1247         PopplerRectangle points;
1248         GdkRegion *retval;
1249
1250         pdf_document = PDF_DOCUMENT (selection);
1251         poppler_page = poppler_document_get_page (pdf_document->document,
1252                                                   rc->page);
1253         set_page_orientation (pdf_document, poppler_page);
1254
1255         points.x1 = 0.0;
1256         points.y1 = 0.0;
1257         poppler_page_get_size (poppler_page, &(points.x2), &(points.y2));
1258         retval = poppler_page_get_selection_region (poppler_page, 1.0, &points);
1259         g_object_unref (poppler_page);
1260
1261         return retval;
1262 }
1263
1264 static void
1265 pdf_selection_iface_init (EvSelectionIface *iface)
1266 {
1267         iface->render_selection = pdf_selection_render_selection;
1268         iface->get_selection_region = pdf_selection_get_selection_region;
1269         iface->get_selection_map = pdf_selection_get_selection_map;
1270 }
1271
1272 PdfDocument *
1273 pdf_document_new (void)
1274 {
1275         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1276 }