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
  87
  88 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  89                          {
  90                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  91                                                         pdf_document_document_iface_init);
  92                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  93                                                         pdf_document_security_iface_init);
  94                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  95                                                         pdf_document_document_thumbnails_iface_init);
  96                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  97                                                         pdf_document_document_links_iface_init);
  98                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
  99                                                         pdf_document_document_fonts_iface_init);
 100                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
 101                                                         pdf_document_find_iface_init);
 102                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
 103                                                         pdf_document_ps_exporter_iface_init);
 104                                  G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
 105                                                         pdf_selection_iface_init);
 106                          });
 107
 108 static void
 109 pdf_document_search_free (PdfDocumentSearch   *search)
 110 {
 111         PdfDocument *pdf_document = search->document;
 112         int n_pages;
 113         int i;
 114
 115         if (search->idle != 0)
 116                 g_source_remove (search->idle);
 117
 118         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 119         for (i = 0; i < n_pages; i++) {
 120                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 121                 g_list_free (search->pages[i]);
 122         }
 123
 124         g_free (search->text);
 125 }
 126
 127 static void
 128 pdf_document_dispose (GObject *object)
 129 {
 130         PdfDocument *pdf_document = PDF_DOCUMENT(object);
 131
 132         if (pdf_document->search) {
 133                 pdf_document_search_free (pdf_document->search);
 134                 pdf_document->search = NULL;
 135         }
 136
 137         if (pdf_document->document) {
 138                 g_object_unref (pdf_document->document);
 139         }
 140
 141         if (pdf_document->font_info) {
 142                 poppler_font_info_free (pdf_document->font_info);
 143         }
 144
 145         if (pdf_document->fonts_iter) {
 146                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 147         }
 148 }
 149
 150 static void
 151 pdf_document_class_init (PdfDocumentClass *klass)
 152 {
 153         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
 154
 155         g_object_class->dispose = pdf_document_dispose;
 156 }
 157
 158 static void
 159 pdf_document_init (PdfDocument *pdf_document)
 160 {
 161         pdf_document->password = NULL;
 162 }
 163
 164 static void
 165 convert_error (GError  *poppler_error,
 166                GError **error)
 167 {
 168         if (poppler_error == NULL)
 169                 return;
 170
 171         if (poppler_error->domain == POPPLER_ERROR) {
 172                 /* convert poppler errors into EvDocument errors */
 173                 gint code = EV_DOCUMENT_ERROR_INVALID;
 174                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 175                         code = EV_DOCUMENT_ERROR_INVALID;
 176                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 177                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 178
 179
 180                 g_set_error (error,
 181                              EV_DOCUMENT_ERROR,
 182                              code,
 183                              poppler_error->message,
 184                              NULL);
 185         } else {
 186                 g_propagate_error (error, poppler_error);
 187         }
 188 }
 189
 190
 191 /* EvDocument */
 192 static gboolean
 193 pdf_document_save (EvDocument  *document,
 194                    const char  *uri,
 195                    GError     **error)
 196 {
 197         gboolean retval;
 198         GError *poppler_error = NULL;
 199
 200         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 201                                         uri,
 202                                         &poppler_error);
 203         if (! retval)
 204                 convert_error (poppler_error, error);
 205
 206         return retval;
 207 }
 208
 209 static PopplerOrientation
 210 get_document_orientation (PdfDocument *pdf_document)
 211 {
 212         PopplerOrientation orientation;
 213         PopplerPage *page;
 214
 215         /* Should prolly be smarter here and check more than first page */
 216         page = poppler_document_get_page (pdf_document->document, 0);
 217         if (page) {
 218                 orientation = poppler_page_get_orientation (page);
 219         } else {
 220                 orientation = POPPLER_ORIENTATION_PORTRAIT;
 221         }
 222         g_object_unref (page);
 223
 224         return orientation;
 225 }
 226
 227 static gboolean
 228 pdf_document_load (EvDocument   *document,
 229                    const char   *uri,
 230                    GError      **error)
 231 {
 232         GError *poppler_error = NULL;
 233         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 234
 235         pdf_document->document =
 236                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 237
 238         if (pdf_document->document == NULL) {
 239                 convert_error (poppler_error, error);
 240                 return FALSE;
 241         }
 242
 243         return TRUE;
 244 }
 245
 246 static int
 247 pdf_document_get_n_pages (EvDocument *document)
 248 {
 249         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 250 }
 251
 252 /* FIXME This should not be necessary, poppler should rember it */
 253 static void
 254 set_page_orientation (PdfDocument *pdf_document, PopplerPage *page)
 255 {
 256         if (pdf_document->orientation_set) {
 257                 poppler_page_set_orientation (page, pdf_document->orientation);
 258         }
 259 }
 260
 261 static void
 262 pdf_document_get_page_size (EvDocument   *document,
 263                             int           page,
 264                             double       *width,
 265                             double       *height)
 266 {
 267         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 268         PopplerPage *poppler_page;
 269
 270         poppler_page = poppler_document_get_page (pdf_document->document, page);
 271         set_page_orientation (pdf_document, poppler_page);
 272         poppler_page_get_size (poppler_page, width, height);
 273         g_object_unref (poppler_page);
 274 }
 275
 276 static char *
 277 pdf_document_get_page_label (EvDocument *document,
 278                              int         page)
 279 {
 280         PopplerPage *poppler_page;
 281         char *label = NULL;
 282
 283         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 284                                                   page);
 285
 286         g_object_get (G_OBJECT (poppler_page),
 287                       "label", &label,
 288                       NULL);
 289         g_object_unref (poppler_page);
 290
 291         return label;
 292 }
 293
 294 static GList *
 295 pdf_document_get_links (EvDocument *document,
 296                         int         page)
 297 {
 298         PdfDocument *pdf_document;
 299         PopplerPage *poppler_page;
 300         GList *retval = NULL;
 301         GList *mapping_list;
 302         GList *list;
 303         double height;
 304
 305         pdf_document = PDF_DOCUMENT (document);
 306         poppler_page = poppler_document_get_page (pdf_document->document,
 307                                                   page);
 308         mapping_list = poppler_page_get_link_mapping (poppler_page);
 309         poppler_page_get_size (poppler_page, NULL, &height);
 310
 311         for (list = mapping_list; list; list = list->next) {
 312                 PopplerLinkMapping *link_mapping;
 313                 EvLinkMapping *ev_link_mapping;
 314
 315                 link_mapping = (PopplerLinkMapping *)list->data;
 316                 ev_link_mapping = g_new (EvLinkMapping, 1);
 317                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 318                 ev_link_mapping->x1 = link_mapping->area.x1;
 319                 ev_link_mapping->x2 = link_mapping->area.x2;
 320                 /* Invert this for X-style coordinates */
 321                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 322                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 323
 324                 retval = g_list_prepend (retval, ev_link_mapping);
 325         }
 326
 327         poppler_page_free_link_mapping (mapping_list);
 328         g_object_unref (poppler_page);
 329
 330         return g_list_reverse (retval);
 331 }
 332
 333
 334 static GdkPixbuf *
 335 pdf_document_render_pixbuf (EvDocument   *document,
 336                             EvRenderContext *rc)
 337 {
 338         PdfDocument *pdf_document;
 339         PopplerPage *poppler_page;
 340         GdkPixbuf *pixbuf;
 341         double width_points, height_points;
 342         gint width, height;
 343
 344         pdf_document = PDF_DOCUMENT (document);
 345         poppler_page = poppler_document_get_page (pdf_document->document,
 346                                                   rc->page);
 347         set_page_orientation (pdf_document, poppler_page);
 348
 349         poppler_page_get_size (poppler_page, &width_points, &height_points);
 350         width = (int) ((width_points * rc->scale) + 0.5);
 351         height = (int) ((height_points * rc->scale) + 0.5);
 352
 353         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 354                                  FALSE, 8,
 355                                  width, height);
 356
 357         poppler_page_render_to_pixbuf (poppler_page,
 358                                        0, 0,
 359                                        width, height,
 360                                        rc->scale,
 361                                        pixbuf,
 362                                        0, 0);
 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;
 825         int width, height;
 826         int x_offset, y_offset;
 827         double scale;
 828         gdouble unscaled_width, unscaled_height;
 829
 830         poppler_page = poppler_document_get_page (pdf_document->document, page);
 831         set_page_orientation (pdf_document, poppler_page);
 832         g_return_val_if_fail (poppler_page != NULL, NULL);
 833
 834         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 835         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 836         scale = width / unscaled_width;
 837
 838         if (border) {
 839                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 840                 x_offset = 1;
 841                 y_offset = 1;
 842         } else {
 843                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 844                                          width, height);
 845                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 846                 x_offset = 0;
 847                 y_offset = 0;
 848         }
 849
 850         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 851                                        width, height,
 852                                        scale, pixbuf,
 853                                        x_offset, y_offset);
 854
 855         g_object_unref (poppler_page);
 856         return pixbuf;
 857 }
 858
 859 static GdkPixbuf *
 860 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 861                                        gint                  page,
 862                                        gint                  size,
 863                                        gboolean              border)
 864 {
 865         PdfDocument *pdf_document;
 866         PopplerPage *poppler_page;
 867         GdkPixbuf *pixbuf;
 868
 869         pdf_document = PDF_DOCUMENT (document_thumbnails);
 870
 871         poppler_page = poppler_document_get_page (pdf_document->document, page);
 872         set_page_orientation (pdf_document, poppler_page);
 873         g_return_val_if_fail (poppler_page != NULL, NULL);
 874
 875         pixbuf = poppler_page_get_thumbnail (poppler_page);
 876
 877         if (pixbuf != NULL) {
 878                 /* The document provides its own thumbnails. */
 879                 if (border) {
 880                         GdkPixbuf *real_pixbuf;
 881
 882                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 883                         g_object_unref (pixbuf);
 884                         pixbuf = real_pixbuf;
 885                 }
 886         } else {
 887                 /* There is no provided thumbnail.  We need to make one. */
 888                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 889         }
 890
 891         g_object_unref (poppler_page);
 892
 893         return pixbuf;
 894 }
 895
 896 static void
 897 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 898                                         gint                  page,
 899                                         gint                  size,
 900                                         gint                 *width,
 901                                         gint                 *height)
 902 {
 903         PdfDocument *pdf_document;
 904         PopplerPage *poppler_page;
 905         gint has_thumb;
 906
 907         pdf_document = PDF_DOCUMENT (document_thumbnails);
 908         poppler_page = poppler_document_get_page (pdf_document->document, page);
 909         set_page_orientation (pdf_document, poppler_page);
 910
 911         g_return_if_fail (width != NULL);
 912         g_return_if_fail (height != NULL);
 913         g_return_if_fail (poppler_page != NULL);
 914
 915         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 916
 917         if (!has_thumb) {
 918                 double page_width, page_height;
 919
 920                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 921                 if (page_width > page_height) {
 922                         *width = size;
 923                         *height = (int) (size * page_height / page_width);
 924                 } else {
 925                         *width = (int) (size * page_width / page_height);
 926                         *height = size;
 927                 }
 928         }
 929         g_object_unref (poppler_page);
 930 }
 931
 932 static void
 933 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 934 {
 935         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 936         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 937 }
 938
 939
 940 static gboolean
 941 pdf_document_search_idle_callback (void *data)
 942 {
 943         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 944         PdfDocument *pdf_document = search->document;
 945         int n_pages;
 946         GList *matches;
 947         PopplerPage *page;
 948
 949         page = poppler_document_get_page (search->document->document,
 950                                           search->search_page);
 951         set_page_orientation (pdf_document, page);
 952
 953         ev_document_doc_mutex_lock ();
 954         matches = poppler_page_find_text (page, search->text);
 955         ev_document_doc_mutex_unlock ();
 956
 957         g_object_unref (page);
 958
 959         search->pages[search->search_page] = matches;
 960         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 961                                   search->search_page);
 962
 963         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 964         search->search_page += 1;
 965         if (search->search_page == n_pages) {
 966                 /* wrap around */
 967                 search->search_page = 0;
 968         }
 969
 970         if (search->search_page != search->start_page) {
 971                 return TRUE;
 972         }
 973
 974         /* We're done. */
 975         search->idle = 0; /* will return FALSE to remove */
 976         return FALSE;
 977 }
 978
 979
 980 static PdfDocumentSearch *
 981 pdf_document_search_new (PdfDocument *pdf_document,
 982                          int          start_page,
 983                          const char  *text)
 984 {
 985         PdfDocumentSearch *search;
 986         int n_pages;
 987         int i;
 988
 989         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 990
 991         search = g_new0 (PdfDocumentSearch, 1);
 992
 993         search->text = g_strdup (text);
 994         search->pages = g_new0 (GList *, n_pages);
 995         for (i = 0; i < n_pages; i++) {
 996                 search->pages[i] = NULL;
 997         }
 998
 999         search->document = pdf_document;
1000
1001         /* We add at low priority so the progress bar repaints */
1002         search->idle = g_idle_add_full (G_PRIORITY_LOW,
1003                                         pdf_document_search_idle_callback,
1004                                         search,
1005                                         NULL);
1006
1007         search->start_page = start_page;
1008         search->search_page = start_page;
1009
1010         return search;
1011 }
1012
1013 static void
1014 pdf_document_find_begin (EvDocumentFind   *document,
1015                          int               page,
1016                          const char       *search_string,
1017                          gboolean          case_sensitive)
1018 {
1019         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1020
1021         /* FIXME handle case_sensitive (right now XPDF
1022          * code is always case insensitive for ASCII
1023          * and case sensitive for all other languaages)
1024          */
1025
1026         if (pdf_document->search &&
1027             strcmp (search_string, pdf_document->search->text) == 0)
1028                 return;
1029
1030         if (pdf_document->search)
1031                 pdf_document_search_free (pdf_document->search);
1032
1033         pdf_document->search = pdf_document_search_new (pdf_document,
1034                                                         page,
1035                                                         search_string);
1036 }
1037
1038 int
1039 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
1040 {
1041         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1042
1043         if (search) {
1044                 return g_list_length (search->pages[page]);
1045         } else {
1046                 return 0;
1047         }
1048 }
1049
1050 gboolean
1051 pdf_document_find_get_result (EvDocumentFind *document_find,
1052                               int             page,
1053                               int             n_result,
1054                               EvRectangle    *rectangle)
1055 {
1056         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1057         PdfDocumentSearch *search = pdf_document->search;
1058         PopplerPage *poppler_page;
1059         PopplerRectangle *r;
1060         double height;
1061
1062         if (search == NULL)
1063                 return FALSE;
1064
1065         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1066                                                   n_result);
1067         if (r == NULL)
1068                 return FALSE;
1069
1070         poppler_page = poppler_document_get_page (pdf_document->document, page);
1071         set_page_orientation (pdf_document, poppler_page);
1072         poppler_page_get_size (poppler_page, NULL, &height);
1073         rectangle->x1 = r->x1;
1074         rectangle->y1 = height - r->y2;
1075         rectangle->x2 = r->x2;
1076         rectangle->y2 = height - r->y1;
1077         g_object_unref (poppler_page);
1078
1079         return TRUE;
1080 }
1081
1082 int
1083 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1084                                     int             page)
1085 {
1086         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1087
1088         g_return_val_if_fail (search != NULL, FALSE);
1089
1090         return search->pages[page] != NULL;
1091 }
1092
1093 double
1094 pdf_document_find_get_progress (EvDocumentFind *document_find)
1095 {
1096         PdfDocumentSearch *search;
1097         int n_pages, pages_done;
1098
1099         search = PDF_DOCUMENT (document_find)->search;
1100
1101         if (search == NULL) {
1102                 return 0;
1103         }
1104
1105         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1106         if (search->search_page > search->start_page) {
1107                 pages_done = search->search_page - search->start_page + 1;
1108         } else if (search->search_page == search->start_page) {
1109                 pages_done = n_pages;
1110         } else {
1111                 pages_done = n_pages - search->start_page + search->search_page;
1112         }
1113
1114         return pages_done / (double) n_pages;
1115 }
1116
1117 static void
1118 pdf_document_find_cancel (EvDocumentFind *document)
1119 {
1120         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1121
1122         if (pdf_document->search) {
1123                 pdf_document_search_free (pdf_document->search);
1124                 pdf_document->search = NULL;
1125         }
1126 }
1127
1128 static void
1129 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1130 {
1131         iface->begin = pdf_document_find_begin;
1132         iface->get_n_results = pdf_document_find_get_n_results;
1133         iface->get_result = pdf_document_find_get_result;
1134         iface->page_has_results = pdf_document_find_page_has_results;
1135         iface->get_progress = pdf_document_find_get_progress;
1136         iface->cancel = pdf_document_find_cancel;
1137 }
1138
1139 static void
1140 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1141                                 int first_page, int last_page)
1142 {
1143         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1144
1145         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1146                                                      first_page,
1147                                                      last_page - first_page + 1);
1148 }
1149
1150 static void
1151 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
1152 {
1153         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1154         PopplerPage *poppler_page;
1155
1156         g_return_if_fail (pdf_document->ps_file != NULL);
1157
1158         poppler_page = poppler_document_get_page (pdf_document->document, page);
1159         set_page_orientation (pdf_document, poppler_page);
1160         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1161         g_object_unref (poppler_page);
1162 }
1163
1164 static void
1165 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1166 {
1167         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1168
1169         poppler_ps_file_free (pdf_document->ps_file);
1170         pdf_document->ps_file = NULL;
1171 }
1172
1173 static void
1174 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1175 {
1176         iface->begin = pdf_document_ps_exporter_begin;
1177         iface->do_page = pdf_document_ps_exporter_do_page;
1178         iface->end = pdf_document_ps_exporter_end;
1179 }
1180
1181
1182 void
1183 pdf_selection_render_selection (EvSelection      *selection,
1184                                 EvRenderContext  *rc,
1185                                 GdkPixbuf       **pixbuf,
1186                                 EvRectangle      *points,
1187                                 EvRectangle      *old_points)
1188 {
1189         PdfDocument *pdf_document;
1190         PopplerPage *poppler_page;
1191         double width_points, height_points;
1192         gint width, height;
1193
1194         pdf_document = PDF_DOCUMENT (selection);
1195         poppler_page = poppler_document_get_page (pdf_document->document,
1196                                                   rc->page);
1197         set_page_orientation (pdf_document, poppler_page);
1198
1199         poppler_page_get_size (poppler_page, &width_points, &height_points);
1200         width = (int) ((width_points * rc->scale) + 0.5);
1201         height = (int) ((height_points * rc->scale) + 0.5);
1202
1203         if (*pixbuf == NULL) {
1204                 * pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
1205                                            TRUE, 8,
1206                                            width, height);
1207         }
1208
1209         poppler_page_render_selection (poppler_page,
1210                                        rc->scale, *pixbuf,
1211                                        (PopplerRectangle *)points,
1212                                        (PopplerRectangle *)old_points);
1213         g_object_unref (poppler_page);
1214
1215 }
1216
1217
1218 GdkRegion *
1219 pdf_selection_get_selection_region (EvSelection     *selection,
1220                                     EvRenderContext *rc,
1221                                     EvRectangle     *points)
1222 {
1223         PdfDocument *pdf_document;
1224         PopplerPage *poppler_page;
1225         GdkRegion *retval;
1226
1227         pdf_document = PDF_DOCUMENT (selection);
1228         poppler_page = poppler_document_get_page (pdf_document->document,
1229                                                   rc->page);
1230         set_page_orientation (pdf_document, poppler_page);
1231
1232         retval = poppler_page_get_selection_region (poppler_page, rc->scale, (PopplerRectangle *) points);
1233         g_object_unref (poppler_page);
1234
1235         return retval;
1236 }
1237
1238 static void
1239 pdf_selection_iface_init (EvSelectionIface *iface)
1240 {
1241         iface->render_selection = pdf_selection_render_selection;
1242         iface->get_selection_region = pdf_selection_get_selection_region;
1243 }
1244
1245 PdfDocument *
1246 pdf_document_new (void)
1247 {
1248         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1249 }