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