pdf/ev-poppler.cc

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