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