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         PopplerFontInfo *font_info;
  61         PopplerFontsIter *fonts_iter;
  62         int fonts_scanned_pages;
  63
  64         PdfDocumentSearch *search;
  65 };
  66
  67 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
  68 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
  69 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  70 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
  71 static void pdf_document_document_fonts_iface_init      (EvDocumentFontsIface      *iface);
  72 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
  73 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  74 static void pdf_selection_iface_init                    (EvSelectionIface          *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 int  pdf_document_get_n_pages                    (EvDocument                *document);
  81
  82 static EvLink * ev_link_from_action (PopplerAction *action);
  83 static void pdf_document_search_free (PdfDocumentSearch   *search);
  84
  85
  86 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  87                          {
  88                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  89                                                         pdf_document_document_iface_init);
  90                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  91                                                         pdf_document_security_iface_init);
  92                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  93                                                         pdf_document_document_thumbnails_iface_init);
  94                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  95                                                         pdf_document_document_links_iface_init);
  96                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
  97                                                         pdf_document_document_fonts_iface_init);
  98                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
  99                                                         pdf_document_find_iface_init);
 100                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
 101                                                         pdf_document_ps_exporter_iface_init);
 102                                  G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
 103                                                         pdf_selection_iface_init);
 104                          });
 105
 106
 107 static void
 108 set_rc_data (PdfDocument     *pdf_document,
 109              EvRenderContext *rc)
 110 {
 111         if (rc->data == NULL) {
 112                 rc->data = poppler_document_get_page (pdf_document->document,
 113                                                       rc->page);
 114                 rc->destroy = g_object_unref;
 115         } else {
 116                 g_assert (rc->page == poppler_page_get_index (POPPLER_PAGE (rc->data)));
 117         }
 118 }
 119
 120 static void
 121 pdf_document_search_free (PdfDocumentSearch   *search)
 122 {
 123         PdfDocument *pdf_document = search->document;
 124         int n_pages;
 125         int i;
 126
 127         if (search->idle != 0)
 128                 g_source_remove (search->idle);
 129
 130         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 131         for (i = 0; i < n_pages; i++) {
 132                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 133                 g_list_free (search->pages[i]);
 134         }
 135
 136         g_free (search->text);
 137 }
 138
 139 static void
 140 pdf_document_dispose (GObject *object)
 141 {
 142         PdfDocument *pdf_document = PDF_DOCUMENT(object);
 143
 144         if (pdf_document->search) {
 145                 pdf_document_search_free (pdf_document->search);
 146                 pdf_document->search = NULL;
 147         }
 148
 149         if (pdf_document->document) {
 150                 g_object_unref (pdf_document->document);
 151         }
 152
 153         if (pdf_document->font_info) {
 154                 poppler_font_info_free (pdf_document->font_info);
 155         }
 156
 157         if (pdf_document->fonts_iter) {
 158                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 159         }
 160 }
 161
 162 static void
 163 pdf_document_class_init (PdfDocumentClass *klass)
 164 {
 165         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
 166
 167         g_object_class->dispose = pdf_document_dispose;
 168 }
 169
 170 static void
 171 pdf_document_init (PdfDocument *pdf_document)
 172 {
 173         pdf_document->password = NULL;
 174 }
 175
 176 static void
 177 convert_error (GError  *poppler_error,
 178                GError **error)
 179 {
 180         if (poppler_error == NULL)
 181                 return;
 182
 183         if (poppler_error->domain == POPPLER_ERROR) {
 184                 /* convert poppler errors into EvDocument errors */
 185                 gint code = EV_DOCUMENT_ERROR_INVALID;
 186                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 187                         code = EV_DOCUMENT_ERROR_INVALID;
 188                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 189                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 190
 191
 192                 g_set_error (error,
 193                              EV_DOCUMENT_ERROR,
 194                              code,
 195                              poppler_error->message,
 196                              NULL);
 197         } else {
 198                 g_propagate_error (error, poppler_error);
 199         }
 200 }
 201
 202
 203 /* EvDocument */
 204 static gboolean
 205 pdf_document_save (EvDocument  *document,
 206                    const char  *uri,
 207                    GError     **error)
 208 {
 209         gboolean retval;
 210         GError *poppler_error = NULL;
 211
 212         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 213                                         uri,
 214                                         &poppler_error);
 215         if (! retval)
 216                 convert_error (poppler_error, error);
 217
 218         return retval;
 219 }
 220
 221 static gboolean
 222 pdf_document_load (EvDocument   *document,
 223                    const char   *uri,
 224                    GError      **error)
 225 {
 226         GError *poppler_error = NULL;
 227         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 228
 229         pdf_document->document =
 230                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 231
 232         if (pdf_document->document == NULL) {
 233                 convert_error (poppler_error, error);
 234                 return FALSE;
 235         }
 236
 237         return TRUE;
 238 }
 239
 240 static int
 241 pdf_document_get_n_pages (EvDocument *document)
 242 {
 243         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 244 }
 245
 246 static void
 247 set_page_orientation (PdfDocument *pdf_document, PopplerPage *page, int rotation)
 248 {
 249         PopplerOrientation orientation;
 250
 251         switch (rotation) {
 252         case 90:
 253                 orientation = POPPLER_ORIENTATION_LANDSCAPE;
 254                 break;
 255         case 180:
 256                 orientation = POPPLER_ORIENTATION_UPSIDEDOWN;
 257                 break;
 258         case 270:
 259                 orientation = POPPLER_ORIENTATION_SEASCAPE;
 260                 break;
 261         default:
 262                 orientation = POPPLER_ORIENTATION_PORTRAIT;
 263         }
 264
 265         poppler_page_set_orientation (page, orientation);
 266 }
 267
 268 static void
 269 pdf_document_get_page_size (EvDocument   *document,
 270                             int           page,
 271                             double       *width,
 272                             double       *height)
 273 {
 274         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 275         PopplerPage *poppler_page;
 276
 277         poppler_page = poppler_document_get_page (pdf_document->document, page);
 278         poppler_page_get_size (poppler_page, width, height);
 279         g_object_unref (poppler_page);
 280 }
 281
 282 static char *
 283 pdf_document_get_page_label (EvDocument *document,
 284                              int         page)
 285 {
 286         PopplerPage *poppler_page;
 287         char *label = NULL;
 288
 289         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 290                                                   page);
 291
 292         g_object_get (G_OBJECT (poppler_page),
 293                       "label", &label,
 294                       NULL);
 295         g_object_unref (poppler_page);
 296
 297         return label;
 298 }
 299
 300 static GList *
 301 pdf_document_get_links (EvDocument *document,
 302                         int         page)
 303 {
 304         PdfDocument *pdf_document;
 305         PopplerPage *poppler_page;
 306         GList *retval = NULL;
 307         GList *mapping_list;
 308         GList *list;
 309         double height;
 310
 311         pdf_document = PDF_DOCUMENT (document);
 312         poppler_page = poppler_document_get_page (pdf_document->document,
 313                                                   page);
 314         mapping_list = poppler_page_get_link_mapping (poppler_page);
 315         poppler_page_get_size (poppler_page, NULL, &height);
 316
 317         for (list = mapping_list; list; list = list->next) {
 318                 PopplerLinkMapping *link_mapping;
 319                 EvLinkMapping *ev_link_mapping;
 320
 321                 link_mapping = (PopplerLinkMapping *)list->data;
 322                 ev_link_mapping = g_new (EvLinkMapping, 1);
 323                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 324                 ev_link_mapping->x1 = link_mapping->area.x1;
 325                 ev_link_mapping->x2 = link_mapping->area.x2;
 326                 /* Invert this for X-style coordinates */
 327                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 328                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 329
 330                 retval = g_list_prepend (retval, ev_link_mapping);
 331         }
 332
 333         poppler_page_free_link_mapping (mapping_list);
 334         g_object_unref (poppler_page);
 335
 336         return g_list_reverse (retval);
 337 }
 338
 339
 340 static GdkPixbuf *
 341 pdf_document_render_pixbuf (EvDocument   *document,
 342                             EvRenderContext *rc)
 343 {
 344         PdfDocument *pdf_document;
 345         GdkPixbuf *pixbuf;
 346         double width_points, height_points;
 347         gint width, height;
 348
 349         pdf_document = PDF_DOCUMENT (document);
 350
 351         set_rc_data (pdf_document, rc);
 352         set_page_orientation (pdf_document, POPPLER_PAGE (rc->data), rc->rotation);
 353
 354         poppler_page_get_size (POPPLER_PAGE (rc->data), &width_points, &height_points);
 355         width = (int) ((width_points * rc->scale) + 0.5);
 356         height = (int) ((height_points * rc->scale) + 0.5);
 357
 358         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 359                                  FALSE, 8,
 360                                  width, height);
 361
 362         poppler_page_render_to_pixbuf (POPPLER_PAGE (rc->data),
 363                                        0, 0,
 364                                        width, height,
 365                                        rc->scale,
 366                                        pixbuf);
 367
 368
 369         return pixbuf;
 370 }
 371
 372 /* EvDocumentSecurity */
 373
 374 static gboolean
 375 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 376 {
 377         /* FIXME: do we really need to have this? */
 378         return FALSE;
 379 }
 380
 381 static void
 382 pdf_document_set_password (EvDocumentSecurity *document_security,
 383                            const char         *password)
 384 {
 385         PdfDocument *document = PDF_DOCUMENT (document_security);
 386
 387         if (document->password)
 388                 g_free (document->password);
 389
 390         document->password = g_strdup (password);
 391 }
 392
 393 static gboolean
 394 pdf_document_can_get_text (EvDocument *document)
 395 {
 396         return TRUE;
 397 }
 398
 399 static EvDocumentInfo *
 400 pdf_document_get_info (EvDocument *document)
 401 {
 402         EvDocumentInfo *info;
 403         PopplerPageLayout layout;
 404         PopplerPageMode mode;
 405         PopplerViewerPreferences view_prefs;
 406         PopplerPermissions permissions;
 407
 408         info = g_new0 (EvDocumentInfo, 1);
 409
 410         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 411                             EV_DOCUMENT_INFO_FORMAT |
 412                             EV_DOCUMENT_INFO_AUTHOR |
 413                             EV_DOCUMENT_INFO_SUBJECT |
 414                             EV_DOCUMENT_INFO_KEYWORDS |
 415                             EV_DOCUMENT_INFO_LAYOUT |
 416                             EV_DOCUMENT_INFO_START_MODE |
 417                             EV_DOCUMENT_INFO_PERMISSIONS |
 418                             EV_DOCUMENT_INFO_UI_HINTS |
 419                             EV_DOCUMENT_INFO_CREATOR |
 420                             EV_DOCUMENT_INFO_PRODUCER |
 421                             EV_DOCUMENT_INFO_CREATION_DATE |
 422                             EV_DOCUMENT_INFO_MOD_DATE |
 423                             EV_DOCUMENT_INFO_LINEARIZED |
 424                             EV_DOCUMENT_INFO_N_PAGES |
 425                             EV_DOCUMENT_INFO_SECURITY;
 426
 427
 428         g_object_get (PDF_DOCUMENT (document)->document,
 429                       "title", &(info->title),
 430                       "format", &(info->format),
 431                       "author", &(info->author),
 432                       "subject", &(info->subject),
 433                       "keywords", &(info->keywords),
 434                       "page-mode", &mode,
 435                       "page-layout", &layout,
 436                       "viewer-preferences", &view_prefs,
 437                       "permissions", &permissions,
 438                       "creator", &(info->creator),
 439                       "producer", &(info->producer),
 440                       "creation-date", &(info->creation_date),
 441                       "mod-date", &(info->modified_date),
 442                       "linearized", &(info->linearized),
 443                       NULL);
 444
 445         switch (layout) {
 446                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 447                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 448                         break;
 449                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 450                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 451                         break;
 452                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 453                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 454                         break;
 455                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 456                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 457                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 458                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 459                         break;
 460                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 461                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 462                         break;
 463                 default:
 464                         break;
 465         }
 466
 467         switch (mode) {
 468                 case POPPLER_PAGE_MODE_NONE:
 469                         info->mode = EV_DOCUMENT_MODE_NONE;
 470                         break;
 471                 case POPPLER_PAGE_MODE_USE_THUMBS:
 472                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 473                         break;
 474                 case POPPLER_PAGE_MODE_USE_OC:
 475                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 476                         break;
 477                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 478                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 479                         break;
 480                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 481                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 482                 default:
 483                         break;
 484         }
 485
 486         info->ui_hints = 0;
 487         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 488                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 489         }
 490         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 491                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 492         }
 493         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 494                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 495         }
 496         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 497                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 498         }
 499         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 500                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 501         }
 502         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 503                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 504         }
 505         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 506                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 507         }
 508
 509         info->permissions = 0;
 510         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 511                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 512         }
 513         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 514                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 515         }
 516         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 517                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 518         }
 519         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 520                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 521         }
 522
 523         info->n_pages = ev_document_get_n_pages (document);
 524
 525         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
 526                 /* translators: this is the document security state */
 527                 info->security = g_strdup (_("Yes"));
 528         } else {
 529                 /* translators: this is the document security state */
 530                 info->security = g_strdup (_("No"));
 531         }
 532
 533         return info;
 534 }
 535
 536 static char *
 537 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 538 {
 539         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 540         PopplerPage *poppler_page;
 541         PopplerRectangle r;
 542         double height;
 543         char *text;
 544
 545         poppler_page = poppler_document_get_page (pdf_document->document, page);
 546         g_return_val_if_fail (poppler_page != NULL, NULL);
 547
 548         poppler_page_get_size (poppler_page, NULL, &height);
 549         r.x1 = rect->x1;
 550         r.y1 = height - rect->y2;
 551         r.x2 = rect->x2;
 552         r.y2 = height - rect->y1;
 553
 554         text = poppler_page_get_text (poppler_page, &r);
 555
 556         g_object_unref (poppler_page);
 557
 558         return text;
 559 }
 560
 561 static void
 562 pdf_document_document_iface_init (EvDocumentIface *iface)
 563 {
 564         iface->save = pdf_document_save;
 565         iface->load = pdf_document_load;
 566         iface->get_n_pages = pdf_document_get_n_pages;
 567         iface->get_page_size = pdf_document_get_page_size;
 568         iface->get_page_label = pdf_document_get_page_label;
 569         iface->get_links = pdf_document_get_links;
 570         iface->render_pixbuf = pdf_document_render_pixbuf;
 571         iface->get_text = pdf_document_get_text;
 572         iface->can_get_text = pdf_document_can_get_text;
 573         iface->get_info = pdf_document_get_info;
 574 };
 575
 576 static void
 577 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 578 {
 579         iface->has_document_security = pdf_document_has_document_security;
 580         iface->set_password = pdf_document_set_password;
 581 }
 582
 583 static gdouble
 584 pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
 585 {
 586         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 587         int n_pages;
 588
 589         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 590
 591         return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
 592 }
 593
 594 static gboolean
 595 pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
 596                          int              n_pages)
 597 {
 598         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 599         gboolean result;
 600
 601         g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);
 602
 603         if (pdf_document->font_info == NULL) {
 604                 pdf_document->font_info = poppler_font_info_new (pdf_document->document);
 605         }
 606
 607         if (pdf_document->fonts_iter) {
 608                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 609         }
 610
 611         pdf_document->fonts_scanned_pages += n_pages;
 612
 613         result = poppler_font_info_scan (pdf_document->font_info, n_pages,
 614                                          &pdf_document->fonts_iter);
 615         if (!result) {
 616                 pdf_document->fonts_scanned_pages = 0;
 617                 poppler_font_info_free (pdf_document->font_info);
 618                 pdf_document->font_info = NULL;
 619         }
 620
 621         return result;
 622 }
 623
 624 static const char *
 625 font_type_to_string (PopplerFontType type)
 626 {
 627         switch (type)
 628         {
 629         case POPPLER_FONT_TYPE_TYPE1:
 630                 return _("Type 1");
 631         case POPPLER_FONT_TYPE_TYPE1C:
 632                 return _("Type 1C");
 633         case POPPLER_FONT_TYPE_TYPE3:
 634                 return _("Type 3");
 635         case POPPLER_FONT_TYPE_TRUETYPE:
 636                 return _("TrueType");
 637         case POPPLER_FONT_TYPE_CID_TYPE0:
 638                 return _("Type 1 (CID)");
 639         case POPPLER_FONT_TYPE_CID_TYPE0C:
 640                 return _("Type 1C (CID)");
 641         case POPPLER_FONT_TYPE_CID_TYPE2:
 642                 return _("TrueType (CID)");
 643         default:
 644                 return _("Unknown font type");
 645         }
 646 }
 647
 648 static void
 649 pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
 650                                GtkTreeModel    *model)
 651 {
 652         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 653         PopplerFontsIter *iter = pdf_document->fonts_iter;
 654
 655         g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));
 656
 657         if (!iter)
 658                 return;
 659
 660         do {
 661                 GtkTreeIter list_iter;
 662                 const char *name;
 663                 const char *type;
 664                 const char *embedded;
 665                 char *details;
 666
 667                 name = poppler_fonts_iter_get_name (iter);
 668
 669                 if (name == NULL) {
 670                         name = _("No name");
 671                 }
 672
 673                 type = font_type_to_string (
 674                         poppler_fonts_iter_get_font_type (iter));
 675
 676                 if (poppler_fonts_iter_is_embedded (iter)) {
 677                         if (poppler_fonts_iter_is_subset (iter))
 678                                 embedded = _("Embedded subset");
 679                         else
 680                                 embedded = _("Embedded");
 681                 } else {
 682                         embedded = _("Not embedded");
 683                 }
 684
 685                 details = g_markup_printf_escaped ("%s\n%s", type, embedded);
 686
 687                 gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
 688                 gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
 689                                     EV_DOCUMENT_FONTS_COLUMN_NAME, name,
 690                                     EV_DOCUMENT_FONTS_COLUMN_DETAILS, details,
 691                                     -1);
 692
 693                 g_free (details);
 694         } while (poppler_fonts_iter_next (iter));
 695 }
 696
 697 static void
 698 pdf_document_document_fonts_iface_init (EvDocumentFontsIface *iface)
 699 {
 700         iface->fill_model = pdf_document_fonts_fill_model;
 701         iface->scan = pdf_document_fonts_scan;
 702         iface->get_progress = pdf_document_fonts_get_progress;
 703 }
 704
 705 static gboolean
 706 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 707 {
 708         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 709         PopplerIndexIter *iter;
 710
 711         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 712
 713         iter = poppler_index_iter_new (pdf_document->document);
 714         if (iter == NULL)
 715                 return FALSE;
 716         poppler_index_iter_free (iter);
 717
 718         return TRUE;
 719 }
 720
 721 static EvLink *
 722 ev_link_from_action (PopplerAction *action)
 723 {
 724         EvLink *link;
 725         const char *title;
 726
 727         title = action->any.title;
 728
 729         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 730                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 731         } else if (action->type == POPPLER_ACTION_URI) {
 732                 link = ev_link_new_external (title, action->uri.uri);
 733         } else {
 734                 link = ev_link_new_title (title);
 735         }
 736
 737         return link;
 738 }
 739
 740 static void
 741 build_tree (PdfDocument      *pdf_document,
 742             GtkTreeModel     *model,
 743             GtkTreeIter      *parent,
 744             PopplerIndexIter *iter)
 745 {
 746
 747         do {
 748                 GtkTreeIter tree_iter;
 749                 PopplerIndexIter *child;
 750                 PopplerAction *action;
 751                 EvLink *link;
 752                 gboolean expand;
 753
 754                 action = poppler_index_iter_get_action (iter);
 755                 expand = poppler_index_iter_is_open (iter);
 756                 if (action) {
 757                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 758                         link = ev_link_from_action (action);
 759                         poppler_action_free (action);
 760
 761                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 762                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 763                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 764                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
 765                                             -1);
 766                         g_object_unref (link);
 767                         child = poppler_index_iter_get_child (iter);
 768                         if (child)
 769                                 build_tree (pdf_document, model, &tree_iter, child);
 770                         poppler_index_iter_free (child);
 771                 }
 772         } while (poppler_index_iter_next (iter));
 773 }
 774
 775
 776 static GtkTreeModel *
 777 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 778 {
 779         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 780         GtkTreeModel *model = NULL;
 781         PopplerIndexIter *iter;
 782
 783         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 784
 785         iter = poppler_index_iter_new (pdf_document->document);
 786         /* Create the model if we have items*/
 787         if (iter != NULL) {
 788                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 789                                                              G_TYPE_STRING,
 790                                                              G_TYPE_OBJECT,
 791                                                              G_TYPE_BOOLEAN);
 792                 build_tree (pdf_document, model, NULL, iter);
 793                 poppler_index_iter_free (iter);
 794         }
 795
 796         return model;
 797 }
 798
 799 static void
 800 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 801 {
 802         iface->has_document_links = pdf_document_links_has_document_links;
 803         iface->get_links_model = pdf_document_links_get_links_model;
 804 }
 805
 806 static GdkPixbuf *
 807 make_thumbnail_for_size (PdfDocument   *pdf_document,
 808                          gint           page,
 809                          int            rotation,
 810                          gint           size,
 811                          gboolean       border)
 812 {
 813         PopplerPage *poppler_page;
 814         GdkPixbuf *pixbuf, *sub_pixbuf;
 815         int width, height;
 816         double scale;
 817         gdouble unscaled_width, unscaled_height;
 818
 819         poppler_page = poppler_document_get_page (pdf_document->document, page);
 820         set_page_orientation (pdf_document, poppler_page, rotation);
 821         g_return_val_if_fail (poppler_page != NULL, NULL);
 822
 823         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page,
 824                                                 size, &width, &height);
 825         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 826         scale = width / unscaled_width;
 827
 828         if (border) {
 829                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 830
 831                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
 832                                                        1, 1,
 833                                                        width - 1, height - 1);
 834         } else {
 835                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 836                                          width, height);
 837                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 838                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
 839                                                        0, 0,
 840                                                        width, height);
 841         }
 842
 843         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 844                                        width, height,
 845                                        scale, sub_pixbuf);
 846
 847         g_object_unref (G_OBJECT (sub_pixbuf));
 848
 849         g_object_unref (poppler_page);
 850         return pixbuf;
 851 }
 852
 853 static GdkPixbuf *
 854 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 855                                        gint                  page,
 856                                        gint                  rotation,
 857                                        gint                  size,
 858                                        gboolean              border)
 859 {
 860         PdfDocument *pdf_document;
 861         PopplerPage *poppler_page;
 862         GdkPixbuf *pixbuf;
 863
 864         pdf_document = PDF_DOCUMENT (document_thumbnails);
 865
 866         poppler_page = poppler_document_get_page (pdf_document->document, page);
 867         set_page_orientation (pdf_document, poppler_page, rotation);
 868         g_return_val_if_fail (poppler_page != NULL, NULL);
 869
 870         pixbuf = poppler_page_get_thumbnail (poppler_page);
 871
 872         if (pixbuf != NULL) {
 873                 /* The document provides its own thumbnails. */
 874                 if (border) {
 875                         GdkPixbuf *real_pixbuf;
 876
 877                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 878                         g_object_unref (pixbuf);
 879                         pixbuf = real_pixbuf;
 880                 }
 881         } else {
 882                 /* There is no provided thumbnail.  We need to make one. */
 883                 pixbuf = make_thumbnail_for_size (pdf_document, page, rotation, size, border);
 884         }
 885
 886         g_object_unref (poppler_page);
 887
 888         return pixbuf;
 889 }
 890
 891 static void
 892 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 893                                         gint                  page,
 894                                         gint                  size,
 895                                         gint                 *width,
 896                                         gint                 *height)
 897 {
 898         PdfDocument *pdf_document;
 899         PopplerPage *poppler_page;
 900         gint has_thumb;
 901
 902         pdf_document = PDF_DOCUMENT (document_thumbnails);
 903         poppler_page = poppler_document_get_page (pdf_document->document, page);
 904
 905         g_return_if_fail (width != NULL);
 906         g_return_if_fail (height != NULL);
 907         g_return_if_fail (poppler_page != NULL);
 908
 909         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 910
 911         if (!has_thumb) {
 912                 double page_width, page_height;
 913
 914                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 915                 if (page_width > page_height) {
 916                         *width = size;
 917                         *height = (int) (size * page_height / page_width);
 918                 } else {
 919                         *width = (int) (size * page_width / page_height);
 920                         *height = size;
 921                 }
 922         }
 923         g_object_unref (poppler_page);
 924 }
 925
 926 static void
 927 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 928 {
 929         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 930         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 931 }
 932
 933
 934 static gboolean
 935 pdf_document_search_idle_callback (void *data)
 936 {
 937         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 938         PdfDocument *pdf_document = search->document;
 939         int n_pages;
 940         GList *matches;
 941         PopplerPage *page;
 942
 943         page = poppler_document_get_page (search->document->document,
 944                                           search->search_page);
 945
 946         ev_document_doc_mutex_lock ();
 947         matches = poppler_page_find_text (page, search->text);
 948         ev_document_doc_mutex_unlock ();
 949
 950         g_object_unref (page);
 951
 952         search->pages[search->search_page] = matches;
 953         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 954                                   search->search_page);
 955
 956         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 957         search->search_page += 1;
 958         if (search->search_page == n_pages) {
 959                 /* wrap around */
 960                 search->search_page = 0;
 961         }
 962
 963         if (search->search_page != search->start_page) {
 964                 return TRUE;
 965         }
 966
 967         /* We're done. */
 968         search->idle = 0; /* will return FALSE to remove */
 969         return FALSE;
 970 }
 971
 972
 973 static PdfDocumentSearch *
 974 pdf_document_search_new (PdfDocument *pdf_document,
 975                          int          start_page,
 976                          const char  *text)
 977 {
 978         PdfDocumentSearch *search;
 979         int n_pages;
 980         int i;
 981
 982         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 983
 984         search = g_new0 (PdfDocumentSearch, 1);
 985
 986         search->text = g_strdup (text);
 987         search->pages = g_new0 (GList *, n_pages);
 988         for (i = 0; i < n_pages; i++) {
 989                 search->pages[i] = NULL;
 990         }
 991
 992         search->document = pdf_document;
 993
 994         /* We add at low priority so the progress bar repaints */
 995         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 996                                         pdf_document_search_idle_callback,
 997                                         search,
 998                                         NULL);
 999
1000         search->start_page = start_page;
1001         search->search_page = start_page;
1002
1003         return search;
1004 }
1005
1006 static void
1007 pdf_document_find_begin (EvDocumentFind   *document,
1008                          int               page,
1009                          const char       *search_string,
1010                          gboolean          case_sensitive)
1011 {
1012         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1013
1014         /* FIXME handle case_sensitive (right now XPDF
1015          * code is always case insensitive for ASCII
1016          * and case sensitive for all other languaages)
1017          */
1018
1019         if (pdf_document->search &&
1020             strcmp (search_string, pdf_document->search->text) == 0)
1021                 return;
1022
1023         if (pdf_document->search)
1024                 pdf_document_search_free (pdf_document->search);
1025
1026         pdf_document->search = pdf_document_search_new (pdf_document,
1027                                                         page,
1028                                                         search_string);
1029 }
1030
1031 int
1032 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
1033 {
1034         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1035
1036         if (search) {
1037                 return g_list_length (search->pages[page]);
1038         } else {
1039                 return 0;
1040         }
1041 }
1042
1043 gboolean
1044 pdf_document_find_get_result (EvDocumentFind *document_find,
1045                               int             page,
1046                               int             n_result,
1047                               EvRectangle    *rectangle)
1048 {
1049         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1050         PdfDocumentSearch *search = pdf_document->search;
1051         PopplerPage *poppler_page;
1052         PopplerRectangle *r;
1053         double height;
1054
1055         if (search == NULL)
1056                 return FALSE;
1057
1058         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1059                                                   n_result);
1060         if (r == NULL)
1061                 return FALSE;
1062
1063         poppler_page = poppler_document_get_page (pdf_document->document, page);
1064         poppler_page_get_size (poppler_page, NULL, &height);
1065         rectangle->x1 = r->x1;
1066         rectangle->y1 = height - r->y2;
1067         rectangle->x2 = r->x2;
1068         rectangle->y2 = height - r->y1;
1069         g_object_unref (poppler_page);
1070
1071         return TRUE;
1072 }
1073
1074 int
1075 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1076                                     int             page)
1077 {
1078         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1079
1080         g_return_val_if_fail (search != NULL, FALSE);
1081
1082         return search->pages[page] != NULL;
1083 }
1084
1085 double
1086 pdf_document_find_get_progress (EvDocumentFind *document_find)
1087 {
1088         PdfDocumentSearch *search;
1089         int n_pages, pages_done;
1090
1091         search = PDF_DOCUMENT (document_find)->search;
1092
1093         if (search == NULL) {
1094                 return 0;
1095         }
1096
1097         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1098         if (search->search_page > search->start_page) {
1099                 pages_done = search->search_page - search->start_page + 1;
1100         } else if (search->search_page == search->start_page) {
1101                 pages_done = n_pages;
1102         } else {
1103                 pages_done = n_pages - search->start_page + search->search_page;
1104         }
1105
1106         return pages_done / (double) n_pages;
1107 }
1108
1109 static void
1110 pdf_document_find_cancel (EvDocumentFind *document)
1111 {
1112         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1113
1114         if (pdf_document->search) {
1115                 pdf_document_search_free (pdf_document->search);
1116                 pdf_document->search = NULL;
1117         }
1118 }
1119
1120 static void
1121 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1122 {
1123         iface->begin = pdf_document_find_begin;
1124         iface->get_n_results = pdf_document_find_get_n_results;
1125         iface->get_result = pdf_document_find_get_result;
1126         iface->page_has_results = pdf_document_find_page_has_results;
1127         iface->get_progress = pdf_document_find_get_progress;
1128         iface->cancel = pdf_document_find_cancel;
1129 }
1130
1131 static void
1132 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1133                                 int first_page, int last_page,
1134                                 double width, double height, gboolean duplex)
1135 {
1136         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1137
1138         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1139                                                      first_page,
1140                                                      last_page - first_page + 1);
1141         poppler_ps_file_set_paper_size (pdf_document->ps_file, width, height);
1142         poppler_ps_file_set_duplex (pdf_document->ps_file, duplex);
1143 }
1144
1145 static void
1146 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, EvRenderContext *rc)
1147 {
1148         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1149         PopplerPage *poppler_page;
1150
1151         g_return_if_fail (pdf_document->ps_file != NULL);
1152
1153         poppler_page = poppler_document_get_page (pdf_document->document, rc->page);
1154         set_page_orientation (pdf_document, poppler_page, rc->rotation);
1155         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1156         g_object_unref (poppler_page);
1157 }
1158
1159 static void
1160 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1161 {
1162         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1163
1164         poppler_ps_file_free (pdf_document->ps_file);
1165         pdf_document->ps_file = NULL;
1166 }
1167
1168 static void
1169 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1170 {
1171         iface->begin = pdf_document_ps_exporter_begin;
1172         iface->do_page = pdf_document_ps_exporter_do_page;
1173         iface->end = pdf_document_ps_exporter_end;
1174 }
1175
1176
1177 void
1178 pdf_selection_render_selection (EvSelection      *selection,
1179                                 EvRenderContext  *rc,
1180                                 GdkPixbuf       **pixbuf,
1181                                 EvRectangle      *points,
1182                                 EvRectangle      *old_points,
1183                                 GdkColor        *text,
1184                                 GdkColor        *base)
1185 {
1186         PdfDocument *pdf_document;
1187         double width_points, height_points;
1188         gint width, height;
1189
1190         pdf_document = PDF_DOCUMENT (selection);
1191         set_rc_data (pdf_document, rc);
1192
1193         set_page_orientation (pdf_document, POPPLER_PAGE (rc->data), rc->rotation);
1194
1195         poppler_page_get_size (POPPLER_PAGE (rc->data), &width_points, &height_points);
1196         width = (int) ((width_points * rc->scale) + 0.5);
1197         height = (int) ((height_points * rc->scale) + 0.5);
1198
1199         if (*pixbuf == NULL) {
1200                 * pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
1201                                            TRUE, 8,
1202                                            width, height);
1203         }
1204
1205         poppler_page_render_selection (POPPLER_PAGE (rc->data),
1206                                        rc->scale, *pixbuf,
1207                                        (PopplerRectangle *)points,
1208                                        (PopplerRectangle *)old_points,
1209                                        text,
1210                                        base);
1211 }
1212
1213
1214 GdkRegion *
1215 pdf_selection_get_selection_region (EvSelection     *selection,
1216                                     EvRenderContext *rc,
1217                                     EvRectangle     *points)
1218 {
1219         PdfDocument *pdf_document;
1220         GdkRegion *retval;
1221
1222         pdf_document = PDF_DOCUMENT (selection);
1223
1224         set_rc_data (pdf_document, rc);
1225         set_page_orientation (pdf_document, POPPLER_PAGE (rc->data), rc->rotation);
1226
1227         retval = poppler_page_get_selection_region ((PopplerPage *)rc->data, rc->scale, (PopplerRectangle *) points);
1228
1229         return retval;
1230 }
1231
1232 GdkRegion *
1233 pdf_selection_get_selection_map (EvSelection     *selection,
1234                                  EvRenderContext *rc)
1235 {
1236         PdfDocument *pdf_document;
1237         PopplerPage *poppler_page;
1238         PopplerRectangle points;
1239         GdkRegion *retval;
1240
1241         pdf_document = PDF_DOCUMENT (selection);
1242         poppler_page = poppler_document_get_page (pdf_document->document,
1243                                                   rc->page);
1244         set_page_orientation (pdf_document, poppler_page, rc->rotation);
1245
1246         points.x1 = 0.0;
1247         points.y1 = 0.0;
1248         poppler_page_get_size (poppler_page, &(points.x2), &(points.y2));
1249         retval = poppler_page_get_selection_region (poppler_page, 1.0, &points);
1250         g_object_unref (poppler_page);
1251
1252         return retval;
1253 }
1254
1255 static void
1256 pdf_selection_iface_init (EvSelectionIface *iface)
1257 {
1258         iface->render_selection = pdf_selection_render_selection;
1259         iface->get_selection_region = pdf_selection_get_selection_region;
1260         iface->get_selection_map = pdf_selection_get_selection_map;
1261 }
1262
1263 PdfDocument *
1264 pdf_document_new (void)
1265 {
1266         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1267 }