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 #ifdef POPPLER_ORIENTATION
 183         PopplerPage *page;
 184
 185         /* Should prolly be smarter here and check more than first page */
 186         page = poppler_document_get_page (pdf_document->document, 0);
 187         if (page) {
 188                 return poppler_page_get_orientation (page);
 189         } else {
 190                 return POPPLER_ORIENTATION_PORTRAIT;
 191         }
 192 #else
 193         return POPPLER_ORIENTATION_PORTRAIT;
 194 #endif
 195 }
 196
 197 static gboolean
 198 pdf_document_load (EvDocument   *document,
 199                    const char   *uri,
 200                    GError      **error)
 201 {
 202         GError *poppler_error = NULL;
 203         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 204
 205         pdf_document->document =
 206                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 207
 208         if (pdf_document->document == NULL) {
 209                 convert_error (poppler_error, error);
 210                 return FALSE;
 211         }
 212
 213         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 }
 244
 245 static char *
 246 pdf_document_get_page_label (EvDocument *document,
 247                              int         page)
 248 {
 249         PopplerPage *poppler_page;
 250         char *label = NULL;
 251
 252         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 253                                                   page);
 254
 255         g_object_get (G_OBJECT (poppler_page),
 256                       "label", &label,
 257                       NULL);
 258
 259         return label;
 260 }
 261
 262 static GList *
 263 pdf_document_get_links (EvDocument *document,
 264                         int         page)
 265 {
 266         PdfDocument *pdf_document;
 267         PopplerPage *poppler_page;
 268         GList *retval = NULL;
 269         GList *mapping_list;
 270         GList *list;
 271         double height;
 272
 273         pdf_document = PDF_DOCUMENT (document);
 274         poppler_page = poppler_document_get_page (pdf_document->document,
 275                                                   page);
 276         mapping_list = poppler_page_get_link_mapping (poppler_page);
 277         poppler_page_get_size (poppler_page, NULL, &height);
 278
 279         for (list = mapping_list; list; list = list->next) {
 280                 PopplerLinkMapping *link_mapping;
 281                 EvLinkMapping *ev_link_mapping;
 282
 283                 link_mapping = (PopplerLinkMapping *)list->data;
 284                 ev_link_mapping = g_new (EvLinkMapping, 1);
 285                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 286                 ev_link_mapping->x1 = link_mapping->area.x1;
 287                 ev_link_mapping->x2 = link_mapping->area.x2;
 288                 /* Invert this for X-style coordinates */
 289                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 290                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 291
 292                 retval = g_list_prepend (retval, ev_link_mapping);
 293         }
 294
 295         poppler_page_free_link_mapping (mapping_list);
 296
 297         return g_list_reverse (retval);
 298 }
 299
 300
 301 static GdkPixbuf *
 302 pdf_document_render_pixbuf (EvDocument   *document,
 303                             int           page,
 304                             double        scale)
 305 {
 306         PdfDocument *pdf_document;
 307         PopplerPage *poppler_page;
 308         GdkPixbuf *pixbuf;
 309         double width_points, height_points;
 310         gint width, height;
 311
 312         pdf_document = PDF_DOCUMENT (document);
 313         poppler_page = poppler_document_get_page (pdf_document->document,
 314                                                   page);
 315         set_page_orientation (pdf_document, poppler_page);
 316
 317         poppler_page_get_size (poppler_page, &width_points, &height_points);
 318         width = (int) ((width_points * scale) + 0.5);
 319         height = (int) ((height_points * scale) + 0.5);
 320
 321         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 322                                  FALSE, 8,
 323                                  width, height);
 324
 325         poppler_page_render_to_pixbuf (poppler_page,
 326                                        0, 0,
 327                                        width, height,
 328                                        scale,
 329                                        pixbuf,
 330                                        0, 0);
 331
 332         return pixbuf;
 333 }
 334
 335 /* EvDocumentSecurity */
 336
 337 static gboolean
 338 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 339 {
 340         /* FIXME: do we really need to have this? */
 341         return FALSE;
 342 }
 343
 344 static void
 345 pdf_document_set_password (EvDocumentSecurity *document_security,
 346                            const char         *password)
 347 {
 348         PdfDocument *document = PDF_DOCUMENT (document_security);
 349
 350         if (document->password)
 351                 g_free (document->password);
 352
 353         document->password = g_strdup (password);
 354 }
 355
 356 static gboolean
 357 pdf_document_can_get_text (EvDocument *document)
 358 {
 359         return TRUE;
 360 }
 361
 362 static EvDocumentInfo *
 363 pdf_document_get_info (EvDocument *document)
 364 {
 365         EvDocumentInfo *info;
 366         PopplerPageLayout layout;
 367         PopplerPageMode mode;
 368         PopplerViewerPreferences view_prefs;
 369         PopplerPermissions permissions;
 370
 371         info = g_new0 (EvDocumentInfo, 1);
 372
 373         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 374                             EV_DOCUMENT_INFO_FORMAT |
 375                             EV_DOCUMENT_INFO_AUTHOR |
 376                             EV_DOCUMENT_INFO_SUBJECT |
 377                             EV_DOCUMENT_INFO_KEYWORDS |
 378                             EV_DOCUMENT_INFO_LAYOUT |
 379                             EV_DOCUMENT_INFO_START_MODE |
 380                             EV_DOCUMENT_INFO_PERMISSIONS |
 381                             EV_DOCUMENT_INFO_UI_HINTS |
 382                             EV_DOCUMENT_INFO_CREATOR |
 383                             EV_DOCUMENT_INFO_PRODUCER |
 384                             EV_DOCUMENT_INFO_CREATION_DATE |
 385                             EV_DOCUMENT_INFO_MOD_DATE |
 386                             EV_DOCUMENT_INFO_LINEARIZED |
 387                             EV_DOCUMENT_INFO_N_PAGES |
 388                             EV_DOCUMENT_INFO_SECURITY;
 389
 390
 391         g_object_get (PDF_DOCUMENT (document)->document,
 392                       "title", &(info->title),
 393                       "format", &(info->format),
 394                       "author", &(info->author),
 395                       "subject", &(info->subject),
 396                       "keywords", &(info->keywords),
 397                       "page-mode", &mode,
 398                       "page-layout", &layout,
 399                       "viewer-preferences", &view_prefs,
 400                       "permissions", &permissions,
 401                       "creator", &(info->creator),
 402                       "producer", &(info->producer),
 403                       "creation-date", &(info->creation_date),
 404                       "mod-date", &(info->modified_date),
 405                       "linearized", &(info->linearized),
 406                       NULL);
 407
 408         switch (layout) {
 409                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 410                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 411                         break;
 412                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 413                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 414                         break;
 415                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 416                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 417                         break;
 418                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 419                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 420                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 421                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 422                         break;
 423                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 424                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 425                         break;
 426                 default:
 427                         break;
 428         }
 429
 430         switch (mode) {
 431                 case POPPLER_PAGE_MODE_NONE:
 432                         info->mode = EV_DOCUMENT_MODE_NONE;
 433                         break;
 434                 case POPPLER_PAGE_MODE_USE_THUMBS:
 435                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 436                         break;
 437                 case POPPLER_PAGE_MODE_USE_OC:
 438                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 439                         break;
 440                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 441                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 442                         break;
 443                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 444                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 445                 default:
 446                         break;
 447         }
 448
 449         info->ui_hints = 0;
 450         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 451                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 452         }
 453         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 454                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 455         }
 456         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 457                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 458         }
 459         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 460                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 461         }
 462         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 463                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 464         }
 465         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 466                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 467         }
 468         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 469                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 470         }
 471
 472         info->permissions = 0;
 473         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 474                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 475         }
 476         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 477                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 478         }
 479         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 480                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 481         }
 482         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 483                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 484         }
 485
 486         info->n_pages = ev_document_get_n_pages (document);
 487
 488         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
 489                 /* translators: this is the document security state */
 490                 info->security = g_strdup (_("Yes"));
 491         } else {
 492                 /* translators: this is the document security state */
 493                 info->security = g_strdup (_("No"));
 494         }
 495
 496         return info;
 497 }
 498
 499 static char *
 500 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 501 {
 502         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 503         PopplerPage *poppler_page;
 504         PopplerRectangle r;
 505         double height;
 506
 507         poppler_page = poppler_document_get_page (pdf_document->document, page);
 508         g_return_val_if_fail (poppler_page != NULL, NULL);
 509
 510         poppler_page_get_size (poppler_page, NULL, &height);
 511         r.x1 = rect->x1;
 512         r.y1 = height - rect->y2;
 513         r.x2 = rect->x2;
 514         r.y2 = height - rect->y1;
 515
 516         return poppler_page_get_text (poppler_page, &r);
 517 }
 518
 519 static EvOrientation
 520 pdf_document_get_orientation (EvDocument *document)
 521 {
 522         EvOrientation result;
 523         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 524
 525         if (!pdf_document->orientation_set) {
 526                 pdf_document->orientation = get_document_orientation (pdf_document);
 527         }
 528
 529         switch (pdf_document->orientation) {
 530                 case POPPLER_ORIENTATION_PORTRAIT:
 531                         result = EV_ORIENTATION_PORTRAIT;
 532                         break;
 533                 case POPPLER_ORIENTATION_LANDSCAPE:
 534                         result = EV_ORIENTATION_LANDSCAPE;
 535                         break;
 536                 case POPPLER_ORIENTATION_UPSIDEDOWN:
 537                         result = EV_ORIENTATION_UPSIDEDOWN;
 538                         break;
 539                 case POPPLER_ORIENTATION_SEASCAPE:
 540                         result = EV_ORIENTATION_SEASCAPE;
 541                         break;
 542         }
 543
 544         return result;
 545 }
 546
 547 static void
 548 pdf_document_set_orientation (EvDocument *document, EvOrientation orientation)
 549 {
 550         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 551         PopplerOrientation poppler_orientation;
 552
 553         switch (orientation) {
 554                 case EV_ORIENTATION_PORTRAIT:
 555                         poppler_orientation = POPPLER_ORIENTATION_PORTRAIT;
 556                         break;
 557                 case EV_ORIENTATION_LANDSCAPE:
 558                         poppler_orientation = POPPLER_ORIENTATION_LANDSCAPE;
 559                         break;
 560                 case EV_ORIENTATION_UPSIDEDOWN:
 561                         poppler_orientation = POPPLER_ORIENTATION_UPSIDEDOWN;
 562                         break;
 563                 case EV_ORIENTATION_SEASCAPE:
 564                         poppler_orientation = POPPLER_ORIENTATION_SEASCAPE;
 565                         break;
 566         }
 567
 568         pdf_document->orientation = poppler_orientation;
 569 }
 570
 571 static void
 572 pdf_document_document_iface_init (EvDocumentIface *iface)
 573 {
 574         iface->save = pdf_document_save;
 575         iface->load = pdf_document_load;
 576         iface->get_n_pages = pdf_document_get_n_pages;
 577         iface->get_page_size = pdf_document_get_page_size;
 578         iface->get_page_label = pdf_document_get_page_label;
 579         iface->get_links = pdf_document_get_links;
 580         iface->render_pixbuf = pdf_document_render_pixbuf;
 581         iface->get_text = pdf_document_get_text;
 582         iface->can_get_text = pdf_document_can_get_text;
 583         iface->get_info = pdf_document_get_info;
 584         iface->set_orientation = pdf_document_set_orientation;
 585         iface->get_orientation = pdf_document_get_orientation;
 586 };
 587
 588 static void
 589 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 590 {
 591         iface->has_document_security = pdf_document_has_document_security;
 592         iface->set_password = pdf_document_set_password;
 593 }
 594
 595 static gdouble
 596 pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
 597 {
 598         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 599         int n_pages;
 600
 601         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 602
 603         return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
 604 }
 605
 606 static gboolean
 607 pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
 608                          int              n_pages)
 609 {
 610         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 611         gboolean result;
 612
 613         g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);
 614
 615         if (pdf_document->font_info == NULL) {
 616                 pdf_document->font_info = poppler_font_info_new (pdf_document->document);
 617         }
 618
 619         if (pdf_document->fonts_iter) {
 620                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 621         }
 622
 623         pdf_document->fonts_scanned_pages += n_pages;
 624
 625         result = poppler_font_info_scan (pdf_document->font_info, n_pages,
 626                                          &pdf_document->fonts_iter);
 627         if (!result) {
 628                 pdf_document->fonts_scanned_pages = 0;
 629                 poppler_font_info_free (pdf_document->font_info);
 630                 pdf_document->font_info = NULL;
 631         }
 632
 633         return result;
 634 }
 635
 636 static void
 637 pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
 638                                GtkTreeModel    *model)
 639 {
 640         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 641         PopplerFontsIter *iter = pdf_document->fonts_iter;
 642
 643         g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));
 644
 645         if (iter) {
 646                 do {
 647                         GtkTreeIter list_iter;
 648                         PopplerIndexIter *child;
 649                         const char *name;
 650
 651                         name = poppler_fonts_iter_get_name (iter);
 652                         gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
 653                         gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
 654                                             EV_DOCUMENT_FONTS_COLUMN_NAME, name,
 655                                             -1);
 656                 } while (poppler_fonts_iter_next (iter));
 657         }
 658 }
 659
 660 static void
 661 pdf_document_document_fonts_iface_init (EvDocumentFontsIface *iface)
 662 {
 663         iface->fill_model = pdf_document_fonts_fill_model;
 664         iface->scan = pdf_document_fonts_scan;
 665         iface->get_progress = pdf_document_fonts_get_progress;
 666 }
 667
 668 static gboolean
 669 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 670 {
 671         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 672         PopplerIndexIter *iter;
 673
 674         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 675
 676         iter = poppler_index_iter_new (pdf_document->document);
 677         if (iter == NULL)
 678                 return FALSE;
 679         poppler_index_iter_free (iter);
 680
 681         return TRUE;
 682 }
 683
 684 static EvLink *
 685 ev_link_from_action (PopplerAction *action)
 686 {
 687         EvLink *link;
 688         const char *title;
 689
 690         title = action->any.title;
 691
 692         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 693                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 694         } else if (action->type == POPPLER_ACTION_URI) {
 695                 link = ev_link_new_external (title, action->uri.uri);
 696         } else {
 697                 link = ev_link_new_title (title);
 698         }
 699
 700         return link;
 701 }
 702
 703 static void
 704 build_tree (PdfDocument      *pdf_document,
 705             GtkTreeModel     *model,
 706             GtkTreeIter      *parent,
 707             PopplerIndexIter *iter)
 708 {
 709
 710         do {
 711                 GtkTreeIter tree_iter;
 712                 PopplerIndexIter *child;
 713                 PopplerAction *action;
 714                 EvLink *link;
 715                 gboolean expand;
 716
 717                 action = poppler_index_iter_get_action (iter);
 718                 expand = poppler_index_iter_is_open (iter);
 719                 if (action) {
 720                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 721                         link = ev_link_from_action (action);
 722                         poppler_action_free (action);
 723
 724                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 725                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 726                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 727                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
 728                                             -1);
 729                         child = poppler_index_iter_get_child (iter);
 730                         if (child)
 731                                 build_tree (pdf_document, model, &tree_iter, child);
 732                         poppler_index_iter_free (child);
 733                 }
 734         } while (poppler_index_iter_next (iter));
 735 }
 736
 737
 738 static GtkTreeModel *
 739 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 740 {
 741         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 742         GtkTreeModel *model = NULL;
 743         PopplerIndexIter *iter;
 744
 745         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 746
 747         iter = poppler_index_iter_new (pdf_document->document);
 748         /* Create the model if we have items*/
 749         if (iter != NULL) {
 750                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 751                                                              G_TYPE_STRING,
 752                                                              G_TYPE_POINTER,
 753                                                              G_TYPE_BOOLEAN);
 754                 build_tree (pdf_document, model, NULL, iter);
 755                 poppler_index_iter_free (iter);
 756         }
 757
 758         return model;
 759 }
 760
 761 static void
 762 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 763 {
 764         iface->has_document_links = pdf_document_links_has_document_links;
 765         iface->get_links_model = pdf_document_links_get_links_model;
 766 }
 767
 768 static GdkPixbuf *
 769 make_thumbnail_for_size (PdfDocument *pdf_document,
 770                          gint         page,
 771                          gint         size,
 772                          gboolean     border)
 773 {
 774         PopplerPage *poppler_page;
 775         GdkPixbuf *pixbuf;
 776         int width, height;
 777         int x_offset, y_offset;
 778         double scale;
 779         gdouble unscaled_width, unscaled_height;
 780
 781         poppler_page = poppler_document_get_page (pdf_document->document, page);
 782
 783         g_return_val_if_fail (poppler_page != NULL, NULL);
 784
 785         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 786         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 787         scale = width / unscaled_width;
 788
 789         if (border) {
 790                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 791                 x_offset = 1;
 792                 y_offset = 1;
 793         } else {
 794                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 795                                          width, height);
 796                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 797                 x_offset = 0;
 798                 y_offset = 0;
 799         }
 800
 801         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 802                                        width, height,
 803                                        scale, pixbuf,
 804                                        x_offset, y_offset);
 805
 806         return pixbuf;
 807 }
 808
 809 static GdkPixbuf *
 810 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 811                                        gint                  page,
 812                                        gint                  size,
 813                                        gboolean              border)
 814 {
 815         PdfDocument *pdf_document;
 816         PopplerPage *poppler_page;
 817         GdkPixbuf *pixbuf;
 818
 819         pdf_document = PDF_DOCUMENT (document_thumbnails);
 820
 821         poppler_page = poppler_document_get_page (pdf_document->document, page);
 822         g_return_val_if_fail (poppler_page != NULL, NULL);
 823
 824         pixbuf = poppler_page_get_thumbnail (poppler_page);
 825         if (pixbuf != NULL) {
 826                 /* The document provides its own thumbnails. */
 827                 if (border) {
 828                         GdkPixbuf *real_pixbuf;
 829
 830                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 831                         g_object_unref (pixbuf);
 832                         pixbuf = real_pixbuf;
 833                 }
 834         } else {
 835                 /* There is no provided thumbnail.  We need to make one. */
 836                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 837         }
 838         return pixbuf;
 839 }
 840
 841 static void
 842 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 843                                         gint                  page,
 844                                         gint                  size,
 845                                         gint                 *width,
 846                                         gint                 *height)
 847 {
 848         PdfDocument *pdf_document;
 849         PopplerPage *poppler_page;
 850         gint has_thumb;
 851
 852         pdf_document = PDF_DOCUMENT (document_thumbnails);
 853         poppler_page = poppler_document_get_page (pdf_document->document, page);
 854
 855         g_return_if_fail (width != NULL);
 856         g_return_if_fail (height != NULL);
 857         g_return_if_fail (poppler_page != NULL);
 858
 859         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 860
 861         if (!has_thumb) {
 862                 double page_width, page_height;
 863
 864                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 865                 if (page_width > page_height) {
 866                         *width = size;
 867                         *height = (int) (size * page_height / page_width);
 868                 } else {
 869                         *width = (int) (size * page_width / page_height);
 870                         *height = size;
 871                 }
 872         }
 873 }
 874
 875 static void
 876 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 877 {
 878         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 879         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 880 }
 881
 882
 883 static gboolean
 884 pdf_document_search_idle_callback (void *data)
 885 {
 886         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 887         PdfDocument *pdf_document = search->document;
 888         int n_pages;
 889         GList *matches;
 890         PopplerPage *page;
 891
 892         page = poppler_document_get_page (search->document->document,
 893                                           search->search_page);
 894
 895         ev_document_doc_mutex_lock ();
 896         matches = poppler_page_find_text (page, search->text);
 897         ev_document_doc_mutex_unlock ();
 898
 899         search->pages[search->search_page] = matches;
 900         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 901                                   search->search_page);
 902
 903         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 904         search->search_page += 1;
 905         if (search->search_page == n_pages) {
 906                 /* wrap around */
 907                 search->search_page = 0;
 908         }
 909
 910         if (search->search_page != search->start_page) {
 911                 return TRUE;
 912         }
 913
 914         /* We're done. */
 915         search->idle = 0; /* will return FALSE to remove */
 916         return FALSE;
 917 }
 918
 919
 920 static PdfDocumentSearch *
 921 pdf_document_search_new (PdfDocument *pdf_document,
 922                          int          start_page,
 923                          const char  *text)
 924 {
 925         PdfDocumentSearch *search;
 926         int n_pages;
 927         int i;
 928
 929         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 930
 931         search = g_new0 (PdfDocumentSearch, 1);
 932
 933         search->text = g_strdup (text);
 934         search->pages = g_new0 (GList *, n_pages);
 935         for (i = 0; i < n_pages; i++) {
 936                 search->pages[i] = NULL;
 937         }
 938
 939         search->document = pdf_document;
 940
 941         /* We add at low priority so the progress bar repaints */
 942         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 943                                         pdf_document_search_idle_callback,
 944                                         search,
 945                                         NULL);
 946
 947         search->start_page = start_page;
 948         search->search_page = start_page;
 949
 950         return search;
 951 }
 952
 953 static void
 954 pdf_document_search_free (PdfDocumentSearch   *search)
 955 {
 956         PdfDocument *pdf_document = search->document;
 957         int n_pages;
 958         int i;
 959
 960         if (search->idle != 0)
 961                 g_source_remove (search->idle);
 962
 963         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 964         for (i = 0; i < n_pages; i++) {
 965                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 966                 g_list_free (search->pages[i]);
 967         }
 968
 969         g_free (search->text);
 970 }
 971
 972 static void
 973 pdf_document_find_begin (EvDocumentFind   *document,
 974                          int               page,
 975                          const char       *search_string,
 976                          gboolean          case_sensitive)
 977 {
 978         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 979
 980         /* FIXME handle case_sensitive (right now XPDF
 981          * code is always case insensitive for ASCII
 982          * and case sensitive for all other languaages)
 983          */
 984
 985         if (pdf_document->search &&
 986             strcmp (search_string, pdf_document->search->text) == 0)
 987                 return;
 988
 989         if (pdf_document->search)
 990                 pdf_document_search_free (pdf_document->search);
 991
 992         pdf_document->search = pdf_document_search_new (pdf_document,
 993                                                         page,
 994                                                         search_string);
 995 }
 996
 997 int
 998 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
 999 {
1000         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1001
1002         if (search) {
1003                 return g_list_length (search->pages[page]);
1004         } else {
1005                 return 0;
1006         }
1007 }
1008
1009 gboolean
1010 pdf_document_find_get_result (EvDocumentFind *document_find,
1011                               int             page,
1012                               int             n_result,
1013                               EvRectangle    *rectangle)
1014 {
1015         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1016         PdfDocumentSearch *search = pdf_document->search;
1017         PopplerPage *poppler_page;
1018         PopplerRectangle *r;
1019         double height;
1020
1021         if (search == NULL)
1022                 return FALSE;
1023
1024         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1025                                                   n_result);
1026         if (r == NULL)
1027                 return FALSE;
1028
1029         poppler_page = poppler_document_get_page (pdf_document->document, page);
1030         poppler_page_get_size (poppler_page, NULL, &height);
1031         rectangle->x1 = r->x1;
1032         rectangle->y1 = height - r->y2;
1033         rectangle->x2 = r->x2;
1034         rectangle->y2 = height - r->y1;
1035
1036         return TRUE;
1037 }
1038
1039 int
1040 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1041                                     int             page)
1042 {
1043         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1044
1045         g_return_val_if_fail (search != NULL, FALSE);
1046
1047         return search->pages[page] != NULL;
1048 }
1049
1050 double
1051 pdf_document_find_get_progress (EvDocumentFind *document_find)
1052 {
1053         PdfDocumentSearch *search;
1054         int n_pages, pages_done;
1055
1056         search = PDF_DOCUMENT (document_find)->search;
1057
1058         if (search == NULL) {
1059                 return 0;
1060         }
1061
1062         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1063         if (search->search_page > search->start_page) {
1064                 pages_done = search->search_page - search->start_page + 1;
1065         } else if (search->search_page == search->start_page) {
1066                 pages_done = n_pages;
1067         } else {
1068                 pages_done = n_pages - search->start_page + search->search_page;
1069         }
1070
1071         return pages_done / (double) n_pages;
1072 }
1073
1074 static void
1075 pdf_document_find_cancel (EvDocumentFind *document)
1076 {
1077         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1078
1079         if (pdf_document->search) {
1080                 pdf_document_search_free (pdf_document->search);
1081                 pdf_document->search = NULL;
1082         }
1083 }
1084
1085 static void
1086 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1087 {
1088         iface->begin = pdf_document_find_begin;
1089         iface->get_n_results = pdf_document_find_get_n_results;
1090         iface->get_result = pdf_document_find_get_result;
1091         iface->page_has_results = pdf_document_find_page_has_results;
1092         iface->get_progress = pdf_document_find_get_progress;
1093         iface->cancel = pdf_document_find_cancel;
1094 }
1095
1096 static void
1097 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1098                                 int first_page, int last_page)
1099 {
1100         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1101
1102         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1103                                                      first_page,
1104                                                      last_page - first_page + 1);
1105 }
1106
1107 static void
1108 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
1109 {
1110         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1111         PopplerPage *poppler_page;
1112
1113         g_return_if_fail (pdf_document->ps_file != NULL);
1114
1115         poppler_page = poppler_document_get_page (pdf_document->document, page);
1116         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1117 }
1118
1119 static void
1120 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1121 {
1122         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1123
1124         poppler_ps_file_free (pdf_document->ps_file);
1125         pdf_document->ps_file = NULL;
1126 }
1127
1128 static void
1129 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1130 {
1131         iface->begin = pdf_document_ps_exporter_begin;
1132         iface->do_page = pdf_document_ps_exporter_do_page;
1133         iface->end = pdf_document_ps_exporter_end;
1134 }
1135
1136 PdfDocument *
1137 pdf_document_new (void)
1138 {
1139         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1140 }