pdf/ev-poppler.cc

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* pdfdocument.h: Implementation of EvDocument for PDF
   3  * Copyright (C) 2004, Red Hat, Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <math.h>
  21 #include <string.h>
  22 #include <gtk/gtk.h>
  23 #include <poppler.h>
  24 #include <poppler-document.h>
  25 #include <poppler-page.h>
  26 #include <glib/gi18n.h>
  27
  28 #include "ev-poppler.h"
  29 #include "ev-ps-exporter.h"
  30 #include "ev-document-find.h"
  31 #include "ev-document-misc.h"
  32 #include "ev-document-links.h"
  33 #include "ev-document-fonts.h"
  34 #include "ev-document-security.h"
  35 #include "ev-document-thumbnails.h"
  36 #include "ev-selection.h"
  37
  38 typedef struct {
  39         PdfDocument *document;
  40         char *text;
  41         GList **pages;
  42         guint idle;
  43         int start_page;
  44         int search_page;
  45 } PdfDocumentSearch;
  46
  47 struct _PdfDocumentClass
  48 {
  49         GObjectClass parent_class;
  50 };
  51
  52 struct _PdfDocument
  53 {
  54         GObject parent_instance;
  55
  56         PopplerDocument *document;
  57         PopplerPSFile *ps_file;
  58         gchar *password;
  59
  60         PopplerFontInfo *font_info;
  61         PopplerFontsIter *fonts_iter;
  62         int fonts_scanned_pages;
  63
  64         PdfDocumentSearch *search;
  65 };
  66
  67 static void pdf_document_document_iface_init            (EvDocumentIface           *iface);
  68 static void pdf_document_security_iface_init            (EvDocumentSecurityIface   *iface);
  69 static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  70 static void pdf_document_document_links_iface_init      (EvDocumentLinksIface      *iface);
  71 static void pdf_document_document_fonts_iface_init      (EvDocumentFontsIface      *iface);
  72 static void pdf_document_find_iface_init                (EvDocumentFindIface       *iface);
  73 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  74 static void pdf_selection_iface_init                    (EvSelectionIface          *iface);
  75 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
  76                                                          gint                       page,
  77                                                          gint                       size,
  78                                                          gint                      *width,
  79                                                          gint                      *height);
  80 static int  pdf_document_get_n_pages                    (EvDocument                *document);
  81
  82 static EvLink * ev_link_from_action (PopplerAction *action);
  83 static void pdf_document_search_free (PdfDocumentSearch   *search);
  84
  85
  86 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  87                          {
  88                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  89                                                         pdf_document_document_iface_init);
  90                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  91                                                         pdf_document_security_iface_init);
  92                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  93                                                         pdf_document_document_thumbnails_iface_init);
  94                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  95                                                         pdf_document_document_links_iface_init);
  96                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FONTS,
  97                                                         pdf_document_document_fonts_iface_init);
  98                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
  99                                                         pdf_document_find_iface_init);
 100                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
 101                                                         pdf_document_ps_exporter_iface_init);
 102                                  G_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION,
 103                                                         pdf_selection_iface_init);
 104                          });
 105
 106
 107 static void
 108 set_rc_data (PdfDocument     *pdf_document,
 109              EvRenderContext *rc)
 110 {
 111         if (rc->data == NULL) {
 112                 rc->data = poppler_document_get_page (pdf_document->document,
 113                                                       rc->page);
 114                 rc->destroy = g_object_unref;
 115         } else {
 116                 g_assert (rc->page == poppler_page_get_index (POPPLER_PAGE (rc->data)));
 117         }
 118 }
 119
 120 static void
 121 pdf_document_search_free (PdfDocumentSearch   *search)
 122 {
 123         PdfDocument *pdf_document = search->document;
 124         int n_pages;
 125         int i;
 126
 127         if (search->idle != 0)
 128                 g_source_remove (search->idle);
 129
 130         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 131         for (i = 0; i < n_pages; i++) {
 132                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 133                 g_list_free (search->pages[i]);
 134         }
 135
 136         g_free (search->text);
 137 }
 138
 139 static void
 140 pdf_document_dispose (GObject *object)
 141 {
 142         PdfDocument *pdf_document = PDF_DOCUMENT(object);
 143
 144         if (pdf_document->search) {
 145                 pdf_document_search_free (pdf_document->search);
 146                 pdf_document->search = NULL;
 147         }
 148
 149         if (pdf_document->document) {
 150                 g_object_unref (pdf_document->document);
 151         }
 152
 153         if (pdf_document->font_info) {
 154                 poppler_font_info_free (pdf_document->font_info);
 155         }
 156
 157         if (pdf_document->fonts_iter) {
 158                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 159         }
 160 }
 161
 162 static void
 163 pdf_document_class_init (PdfDocumentClass *klass)
 164 {
 165         GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
 166
 167         g_object_class->dispose = pdf_document_dispose;
 168 }
 169
 170 static void
 171 pdf_document_init (PdfDocument *pdf_document)
 172 {
 173         pdf_document->password = NULL;
 174 }
 175
 176 static void
 177 convert_error (GError  *poppler_error,
 178                GError **error)
 179 {
 180         if (poppler_error == NULL)
 181                 return;
 182
 183         if (poppler_error->domain == POPPLER_ERROR) {
 184                 /* convert poppler errors into EvDocument errors */
 185                 gint code = EV_DOCUMENT_ERROR_INVALID;
 186                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 187                         code = EV_DOCUMENT_ERROR_INVALID;
 188                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 189                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 190
 191
 192                 g_set_error (error,
 193                              EV_DOCUMENT_ERROR,
 194                              code,
 195                              poppler_error->message,
 196                              NULL);
 197         } else {
 198                 g_propagate_error (error, poppler_error);
 199         }
 200 }
 201
 202
 203 /* EvDocument */
 204 static gboolean
 205 pdf_document_save (EvDocument  *document,
 206                    const char  *uri,
 207                    GError     **error)
 208 {
 209         gboolean retval;
 210         GError *poppler_error = NULL;
 211
 212         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 213                                         uri,
 214                                         &poppler_error);
 215         if (! retval)
 216                 convert_error (poppler_error, error);
 217
 218         return retval;
 219 }
 220
 221 static gboolean
 222 pdf_document_load (EvDocument   *document,
 223                    const char   *uri,
 224                    GError      **error)
 225 {
 226         GError *poppler_error = NULL;
 227         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 228
 229         pdf_document->document =
 230                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 231
 232         if (pdf_document->document == NULL) {
 233                 convert_error (poppler_error, error);
 234                 return FALSE;
 235         }
 236
 237         return TRUE;
 238 }
 239
 240 static int
 241 pdf_document_get_n_pages (EvDocument *document)
 242 {
 243         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 244 }
 245
 246 static void
 247 set_page_orientation (PdfDocument *pdf_document, PopplerPage *page, int rotation)
 248 {
 249         PopplerOrientation orientation;
 250         int r = rotation;
 251
 252         orientation = poppler_page_get_orientation (page);
 253
 254         while (r > 0) {
 255                 if (orientation == POPPLER_ORIENTATION_PORTRAIT) {
 256                         orientation = POPPLER_ORIENTATION_LANDSCAPE;
 257                 } else if (orientation == POPPLER_ORIENTATION_LANDSCAPE) {
 258                         orientation = POPPLER_ORIENTATION_UPSIDEDOWN;
 259                 } else if (orientation == POPPLER_ORIENTATION_UPSIDEDOWN) {
 260                         orientation = POPPLER_ORIENTATION_SEASCAPE;
 261                 } else {
 262                         orientation = POPPLER_ORIENTATION_PORTRAIT;
 263                 }
 264                 r -= 90;
 265         }
 266
 267         poppler_page_set_orientation (page, orientation);
 268 }
 269
 270 static void
 271 pdf_document_get_page_size (EvDocument   *document,
 272                             int           page,
 273                             double       *width,
 274                             double       *height)
 275 {
 276         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 277         PopplerPage *poppler_page;
 278
 279         poppler_page = poppler_document_get_page (pdf_document->document, page);
 280         poppler_page_get_size (poppler_page, width, height);
 281         g_object_unref (poppler_page);
 282 }
 283
 284 static char *
 285 pdf_document_get_page_label (EvDocument *document,
 286                              int         page)
 287 {
 288         PopplerPage *poppler_page;
 289         char *label = NULL;
 290
 291         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 292                                                   page);
 293
 294         g_object_get (G_OBJECT (poppler_page),
 295                       "label", &label,
 296                       NULL);
 297         g_object_unref (poppler_page);
 298
 299         return label;
 300 }
 301
 302 static GList *
 303 pdf_document_get_links (EvDocument *document,
 304                         int         page)
 305 {
 306         PdfDocument *pdf_document;
 307         PopplerPage *poppler_page;
 308         GList *retval = NULL;
 309         GList *mapping_list;
 310         GList *list;
 311         double height;
 312
 313         pdf_document = PDF_DOCUMENT (document);
 314         poppler_page = poppler_document_get_page (pdf_document->document,
 315                                                   page);
 316         mapping_list = poppler_page_get_link_mapping (poppler_page);
 317         poppler_page_get_size (poppler_page, NULL, &height);
 318
 319         for (list = mapping_list; list; list = list->next) {
 320                 PopplerLinkMapping *link_mapping;
 321                 EvLinkMapping *ev_link_mapping;
 322
 323                 link_mapping = (PopplerLinkMapping *)list->data;
 324                 ev_link_mapping = g_new (EvLinkMapping, 1);
 325                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 326                 ev_link_mapping->x1 = link_mapping->area.x1;
 327                 ev_link_mapping->x2 = link_mapping->area.x2;
 328                 /* Invert this for X-style coordinates */
 329                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 330                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 331
 332                 retval = g_list_prepend (retval, ev_link_mapping);
 333         }
 334
 335         poppler_page_free_link_mapping (mapping_list);
 336         g_object_unref (poppler_page);
 337
 338         return g_list_reverse (retval);
 339 }
 340
 341
 342 static GdkPixbuf *
 343 pdf_document_render_pixbuf (EvDocument   *document,
 344                             EvRenderContext *rc)
 345 {
 346         PdfDocument *pdf_document;
 347         GdkPixbuf *pixbuf;
 348         double width_points, height_points;
 349         gint width, height;
 350
 351         pdf_document = PDF_DOCUMENT (document);
 352
 353         set_rc_data (pdf_document, rc);
 354         set_page_orientation (pdf_document, POPPLER_PAGE (rc->data), rc->rotation);
 355
 356         poppler_page_get_size (POPPLER_PAGE (rc->data), &width_points, &height_points);
 357         width = (int) ((width_points * rc->scale) + 0.5);
 358         height = (int) ((height_points * rc->scale) + 0.5);
 359
 360         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 361                                  FALSE, 8,
 362                                  width, height);
 363
 364         poppler_page_render_to_pixbuf (POPPLER_PAGE (rc->data),
 365                                        0, 0,
 366                                        width, height,
 367                                        rc->scale,
 368                                        pixbuf);
 369
 370
 371         return pixbuf;
 372 }
 373
 374 /* EvDocumentSecurity */
 375
 376 static gboolean
 377 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 378 {
 379         /* FIXME: do we really need to have this? */
 380         return FALSE;
 381 }
 382
 383 static void
 384 pdf_document_set_password (EvDocumentSecurity *document_security,
 385                            const char         *password)
 386 {
 387         PdfDocument *document = PDF_DOCUMENT (document_security);
 388
 389         if (document->password)
 390                 g_free (document->password);
 391
 392         document->password = g_strdup (password);
 393 }
 394
 395 static gboolean
 396 pdf_document_can_get_text (EvDocument *document)
 397 {
 398         return TRUE;
 399 }
 400
 401 static EvDocumentInfo *
 402 pdf_document_get_info (EvDocument *document)
 403 {
 404         EvDocumentInfo *info;
 405         PopplerPageLayout layout;
 406         PopplerPageMode mode;
 407         PopplerViewerPreferences view_prefs;
 408         PopplerPermissions permissions;
 409
 410         info = g_new0 (EvDocumentInfo, 1);
 411
 412         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 413                             EV_DOCUMENT_INFO_FORMAT |
 414                             EV_DOCUMENT_INFO_AUTHOR |
 415                             EV_DOCUMENT_INFO_SUBJECT |
 416                             EV_DOCUMENT_INFO_KEYWORDS |
 417                             EV_DOCUMENT_INFO_LAYOUT |
 418                             EV_DOCUMENT_INFO_START_MODE |
 419                             EV_DOCUMENT_INFO_PERMISSIONS |
 420                             EV_DOCUMENT_INFO_UI_HINTS |
 421                             EV_DOCUMENT_INFO_CREATOR |
 422                             EV_DOCUMENT_INFO_PRODUCER |
 423                             EV_DOCUMENT_INFO_CREATION_DATE |
 424                             EV_DOCUMENT_INFO_MOD_DATE |
 425                             EV_DOCUMENT_INFO_LINEARIZED |
 426                             EV_DOCUMENT_INFO_N_PAGES |
 427                             EV_DOCUMENT_INFO_SECURITY;
 428
 429
 430         g_object_get (PDF_DOCUMENT (document)->document,
 431                       "title", &(info->title),
 432                       "format", &(info->format),
 433                       "author", &(info->author),
 434                       "subject", &(info->subject),
 435                       "keywords", &(info->keywords),
 436                       "page-mode", &mode,
 437                       "page-layout", &layout,
 438                       "viewer-preferences", &view_prefs,
 439                       "permissions", &permissions,
 440                       "creator", &(info->creator),
 441                       "producer", &(info->producer),
 442                       "creation-date", &(info->creation_date),
 443                       "mod-date", &(info->modified_date),
 444                       "linearized", &(info->linearized),
 445                       NULL);
 446
 447         switch (layout) {
 448                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 449                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 450                         break;
 451                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 452                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 453                         break;
 454                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 455                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 456                         break;
 457                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 458                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 459                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 460                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 461                         break;
 462                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 463                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 464                         break;
 465                 default:
 466                         break;
 467         }
 468
 469         switch (mode) {
 470                 case POPPLER_PAGE_MODE_NONE:
 471                         info->mode = EV_DOCUMENT_MODE_NONE;
 472                         break;
 473                 case POPPLER_PAGE_MODE_USE_THUMBS:
 474                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 475                         break;
 476                 case POPPLER_PAGE_MODE_USE_OC:
 477                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 478                         break;
 479                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 480                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 481                         break;
 482                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 483                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 484                 default:
 485                         break;
 486         }
 487
 488         info->ui_hints = 0;
 489         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 490                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 491         }
 492         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 493                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 494         }
 495         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 496                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 497         }
 498         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 499                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 500         }
 501         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 502                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 503         }
 504         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 505                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 506         }
 507         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 508                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 509         }
 510
 511         info->permissions = 0;
 512         if (permissions & POPPLER_PERMISSIONS_OK_TO_PRINT) {
 513                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_PRINT;
 514         }
 515         if (permissions & POPPLER_PERMISSIONS_OK_TO_MODIFY) {
 516                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_MODIFY;
 517         }
 518         if (permissions & POPPLER_PERMISSIONS_OK_TO_COPY) {
 519                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_COPY;
 520         }
 521         if (permissions & POPPLER_PERMISSIONS_OK_TO_ADD_NOTES) {
 522                 info->permissions |= EV_DOCUMENT_PERMISSIONS_OK_TO_ADD_NOTES;
 523         }
 524
 525         info->n_pages = ev_document_get_n_pages (document);
 526
 527         if (ev_document_security_has_document_security (EV_DOCUMENT_SECURITY (document))) {
 528                 /* translators: this is the document security state */
 529                 info->security = g_strdup (_("Yes"));
 530         } else {
 531                 /* translators: this is the document security state */
 532                 info->security = g_strdup (_("No"));
 533         }
 534
 535         return info;
 536 }
 537
 538 static char *
 539 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 540 {
 541         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 542         PopplerPage *poppler_page;
 543         PopplerRectangle r;
 544         double height;
 545         char *text;
 546
 547         poppler_page = poppler_document_get_page (pdf_document->document, page);
 548         g_return_val_if_fail (poppler_page != NULL, NULL);
 549
 550         poppler_page_get_size (poppler_page, NULL, &height);
 551         r.x1 = rect->x1;
 552         r.y1 = height - rect->y2;
 553         r.x2 = rect->x2;
 554         r.y2 = height - rect->y1;
 555
 556         text = poppler_page_get_text (poppler_page, &r);
 557
 558         g_object_unref (poppler_page);
 559
 560         return text;
 561 }
 562
 563 static void
 564 pdf_document_document_iface_init (EvDocumentIface *iface)
 565 {
 566         iface->save = pdf_document_save;
 567         iface->load = pdf_document_load;
 568         iface->get_n_pages = pdf_document_get_n_pages;
 569         iface->get_page_size = pdf_document_get_page_size;
 570         iface->get_page_label = pdf_document_get_page_label;
 571         iface->get_links = pdf_document_get_links;
 572         iface->render_pixbuf = pdf_document_render_pixbuf;
 573         iface->get_text = pdf_document_get_text;
 574         iface->can_get_text = pdf_document_can_get_text;
 575         iface->get_info = pdf_document_get_info;
 576 };
 577
 578 static void
 579 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 580 {
 581         iface->has_document_security = pdf_document_has_document_security;
 582         iface->set_password = pdf_document_set_password;
 583 }
 584
 585 static gdouble
 586 pdf_document_fonts_get_progress (EvDocumentFonts *document_fonts)
 587 {
 588         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 589         int n_pages;
 590
 591         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 592
 593         return (double)pdf_document->fonts_scanned_pages / (double)n_pages;
 594 }
 595
 596 static gboolean
 597 pdf_document_fonts_scan (EvDocumentFonts *document_fonts,
 598                          int              n_pages)
 599 {
 600         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 601         gboolean result;
 602
 603         g_return_val_if_fail (PDF_IS_DOCUMENT (document_fonts), FALSE);
 604
 605         if (pdf_document->font_info == NULL) {
 606                 pdf_document->font_info = poppler_font_info_new (pdf_document->document);
 607         }
 608
 609         if (pdf_document->fonts_iter) {
 610                 poppler_fonts_iter_free (pdf_document->fonts_iter);
 611         }
 612
 613         pdf_document->fonts_scanned_pages += n_pages;
 614
 615         result = poppler_font_info_scan (pdf_document->font_info, n_pages,
 616                                          &pdf_document->fonts_iter);
 617         if (!result) {
 618                 pdf_document->fonts_scanned_pages = 0;
 619                 poppler_font_info_free (pdf_document->font_info);
 620                 pdf_document->font_info = NULL;
 621         }
 622
 623         return result;
 624 }
 625
 626 static const char *
 627 font_type_to_string (PopplerFontType type)
 628 {
 629         switch (type)
 630         {
 631         case POPPLER_FONT_TYPE_TYPE1:
 632                 return _("Type 1");
 633         case POPPLER_FONT_TYPE_TYPE1C:
 634                 return _("Type 1C");
 635         case POPPLER_FONT_TYPE_TYPE3:
 636                 return _("Type 3");
 637         case POPPLER_FONT_TYPE_TRUETYPE:
 638                 return _("TrueType");
 639         case POPPLER_FONT_TYPE_CID_TYPE0:
 640                 return _("Type 1 (CID)");
 641         case POPPLER_FONT_TYPE_CID_TYPE0C:
 642                 return _("Type 1C (CID)");
 643         case POPPLER_FONT_TYPE_CID_TYPE2:
 644                 return _("TrueType (CID)");
 645         default:
 646                 return _("Unknown font type");
 647         }
 648 }
 649
 650 static void
 651 pdf_document_fonts_fill_model (EvDocumentFonts *document_fonts,
 652                                GtkTreeModel    *model)
 653 {
 654         PdfDocument *pdf_document = PDF_DOCUMENT (document_fonts);
 655         PopplerFontsIter *iter = pdf_document->fonts_iter;
 656
 657         g_return_if_fail (PDF_IS_DOCUMENT (document_fonts));
 658
 659         if (!iter)
 660                 return;
 661
 662         do {
 663                 GtkTreeIter list_iter;
 664                 const char *name;
 665                 const char *type;
 666                 const char *embedded;
 667                 char *details;
 668
 669                 name = poppler_fonts_iter_get_name (iter);
 670
 671                 if (name == NULL) {
 672                         name = _("No name");
 673                 }
 674
 675                 type = font_type_to_string (
 676                         poppler_fonts_iter_get_font_type (iter));
 677
 678                 if (poppler_fonts_iter_is_embedded (iter)) {
 679                         if (poppler_fonts_iter_is_subset (iter))
 680                                 embedded = _("Embedded subset");
 681                         else
 682                                 embedded = _("Embedded");
 683                 } else {
 684                         embedded = _("Not embedded");
 685                 }
 686
 687                 details = g_markup_printf_escaped ("%s\n%s", type, embedded);
 688
 689                 gtk_list_store_append (GTK_LIST_STORE (model), &list_iter);
 690                 gtk_list_store_set (GTK_LIST_STORE (model), &list_iter,
 691                                     EV_DOCUMENT_FONTS_COLUMN_NAME, name,
 692                                     EV_DOCUMENT_FONTS_COLUMN_DETAILS, details,
 693                                     -1);
 694
 695                 g_free (details);
 696         } while (poppler_fonts_iter_next (iter));
 697 }
 698
 699 static void
 700 pdf_document_document_fonts_iface_init (EvDocumentFontsIface *iface)
 701 {
 702         iface->fill_model = pdf_document_fonts_fill_model;
 703         iface->scan = pdf_document_fonts_scan;
 704         iface->get_progress = pdf_document_fonts_get_progress;
 705 }
 706
 707 static gboolean
 708 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 709 {
 710         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 711         PopplerIndexIter *iter;
 712
 713         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 714
 715         iter = poppler_index_iter_new (pdf_document->document);
 716         if (iter == NULL)
 717                 return FALSE;
 718         poppler_index_iter_free (iter);
 719
 720         return TRUE;
 721 }
 722
 723 static EvLink *
 724 ev_link_from_action (PopplerAction *action)
 725 {
 726         EvLink *link;
 727         const char *title;
 728
 729         title = action->any.title;
 730
 731         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 732                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 733         } else if (action->type == POPPLER_ACTION_URI) {
 734                 link = ev_link_new_external (title, action->uri.uri);
 735         } else {
 736                 link = ev_link_new_title (title);
 737         }
 738
 739         return link;
 740 }
 741
 742 static void
 743 build_tree (PdfDocument      *pdf_document,
 744             GtkTreeModel     *model,
 745             GtkTreeIter      *parent,
 746             PopplerIndexIter *iter)
 747 {
 748
 749         do {
 750                 GtkTreeIter tree_iter;
 751                 PopplerIndexIter *child;
 752                 PopplerAction *action;
 753                 EvLink *link;
 754                 gboolean expand;
 755
 756                 action = poppler_index_iter_get_action (iter);
 757                 expand = poppler_index_iter_is_open (iter);
 758                 if (action) {
 759                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 760                         link = ev_link_from_action (action);
 761                         poppler_action_free (action);
 762
 763                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 764                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 765                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 766                                             EV_DOCUMENT_LINKS_COLUMN_EXPAND, expand,
 767                                             -1);
 768                         g_object_unref (link);
 769                         child = poppler_index_iter_get_child (iter);
 770                         if (child)
 771                                 build_tree (pdf_document, model, &tree_iter, child);
 772                         poppler_index_iter_free (child);
 773                 }
 774         } while (poppler_index_iter_next (iter));
 775 }
 776
 777
 778 static GtkTreeModel *
 779 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 780 {
 781         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 782         GtkTreeModel *model = NULL;
 783         PopplerIndexIter *iter;
 784
 785         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 786
 787         iter = poppler_index_iter_new (pdf_document->document);
 788         /* Create the model if we have items*/
 789         if (iter != NULL) {
 790                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 791                                                              G_TYPE_STRING,
 792                                                              G_TYPE_OBJECT,
 793                                                              G_TYPE_BOOLEAN);
 794                 build_tree (pdf_document, model, NULL, iter);
 795                 poppler_index_iter_free (iter);
 796         }
 797
 798         return model;
 799 }
 800
 801 static void
 802 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 803 {
 804         iface->has_document_links = pdf_document_links_has_document_links;
 805         iface->get_links_model = pdf_document_links_get_links_model;
 806 }
 807
 808 static GdkPixbuf *
 809 make_thumbnail_for_size (PdfDocument   *pdf_document,
 810                          gint           page,
 811                          int            rotation,
 812                          gint           size,
 813                          gboolean       border)
 814 {
 815         PopplerPage *poppler_page;
 816         GdkPixbuf *pixbuf, *sub_pixbuf;
 817         int width, height;
 818         double scale;
 819         gdouble unscaled_width, unscaled_height;
 820
 821         poppler_page = poppler_document_get_page (pdf_document->document, page);
 822         set_page_orientation (pdf_document, poppler_page, rotation);
 823         g_return_val_if_fail (poppler_page != NULL, NULL);
 824
 825         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page,
 826                                                 size, &width, &height);
 827         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 828         scale = width / unscaled_width;
 829
 830         if (border) {
 831                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 832
 833                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
 834                                                        1, 1,
 835                                                        width - 1, height - 1);
 836         } else {
 837                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 838                                          width, height);
 839                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 840                 sub_pixbuf = gdk_pixbuf_new_subpixbuf (pixbuf,
 841                                                        0, 0,
 842                                                        width, height);
 843         }
 844
 845         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 846                                        width, height,
 847                                        scale, sub_pixbuf);
 848
 849         g_object_unref (G_OBJECT (sub_pixbuf));
 850
 851         g_object_unref (poppler_page);
 852         return pixbuf;
 853 }
 854
 855 static GdkPixbuf *
 856 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 857                                        gint                  page,
 858                                        gint                  rotation,
 859                                        gint                  size,
 860                                        gboolean              border)
 861 {
 862         PdfDocument *pdf_document;
 863         PopplerPage *poppler_page;
 864         GdkPixbuf *pixbuf;
 865
 866         pdf_document = PDF_DOCUMENT (document_thumbnails);
 867
 868         poppler_page = poppler_document_get_page (pdf_document->document, page);
 869         set_page_orientation (pdf_document, poppler_page, rotation);
 870         g_return_val_if_fail (poppler_page != NULL, NULL);
 871
 872         pixbuf = poppler_page_get_thumbnail (poppler_page);
 873
 874         if (pixbuf != NULL) {
 875                 /* The document provides its own thumbnails. */
 876                 if (border) {
 877                         GdkPixbuf *real_pixbuf;
 878
 879                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 880                         g_object_unref (pixbuf);
 881                         pixbuf = real_pixbuf;
 882                 }
 883         } else {
 884                 /* There is no provided thumbnail.  We need to make one. */
 885                 pixbuf = make_thumbnail_for_size (pdf_document, page, rotation, size, border);
 886         }
 887
 888         g_object_unref (poppler_page);
 889
 890         return pixbuf;
 891 }
 892
 893 static void
 894 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 895                                         gint                  page,
 896                                         gint                  size,
 897                                         gint                 *width,
 898                                         gint                 *height)
 899 {
 900         PdfDocument *pdf_document;
 901         PopplerPage *poppler_page;
 902         gint has_thumb;
 903
 904         pdf_document = PDF_DOCUMENT (document_thumbnails);
 905         poppler_page = poppler_document_get_page (pdf_document->document, page);
 906
 907         g_return_if_fail (width != NULL);
 908         g_return_if_fail (height != NULL);
 909         g_return_if_fail (poppler_page != NULL);
 910
 911         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 912
 913         if (!has_thumb) {
 914                 double page_width, page_height;
 915
 916                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 917                 if (page_width > page_height) {
 918                         *width = size;
 919                         *height = (int) (size * page_height / page_width);
 920                 } else {
 921                         *width = (int) (size * page_width / page_height);
 922                         *height = size;
 923                 }
 924         }
 925         g_object_unref (poppler_page);
 926 }
 927
 928 static void
 929 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 930 {
 931         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 932         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 933 }
 934
 935
 936 static gboolean
 937 pdf_document_search_idle_callback (void *data)
 938 {
 939         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 940         PdfDocument *pdf_document = search->document;
 941         int n_pages;
 942         GList *matches;
 943         PopplerPage *page;
 944
 945         page = poppler_document_get_page (search->document->document,
 946                                           search->search_page);
 947
 948         ev_document_doc_mutex_lock ();
 949         matches = poppler_page_find_text (page, search->text);
 950         ev_document_doc_mutex_unlock ();
 951
 952         g_object_unref (page);
 953
 954         search->pages[search->search_page] = matches;
 955         ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 956                                   search->search_page);
 957
 958         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 959         search->search_page += 1;
 960         if (search->search_page == n_pages) {
 961                 /* wrap around */
 962                 search->search_page = 0;
 963         }
 964
 965         if (search->search_page != search->start_page) {
 966                 return TRUE;
 967         }
 968
 969         /* We're done. */
 970         search->idle = 0; /* will return FALSE to remove */
 971         return FALSE;
 972 }
 973
 974
 975 static PdfDocumentSearch *
 976 pdf_document_search_new (PdfDocument *pdf_document,
 977                          int          start_page,
 978                          const char  *text)
 979 {
 980         PdfDocumentSearch *search;
 981         int n_pages;
 982         int i;
 983
 984         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 985
 986         search = g_new0 (PdfDocumentSearch, 1);
 987
 988         search->text = g_strdup (text);
 989         search->pages = g_new0 (GList *, n_pages);
 990         for (i = 0; i < n_pages; i++) {
 991                 search->pages[i] = NULL;
 992         }
 993
 994         search->document = pdf_document;
 995
 996         /* We add at low priority so the progress bar repaints */
 997         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 998                                         pdf_document_search_idle_callback,
 999                                         search,
1000                                         NULL);
1001
1002         search->start_page = start_page;
1003         search->search_page = start_page;
1004
1005         return search;
1006 }
1007
1008 static void
1009 pdf_document_find_begin (EvDocumentFind   *document,
1010                          int               page,
1011                          const char       *search_string,
1012                          gboolean          case_sensitive)
1013 {
1014         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1015
1016         /* FIXME handle case_sensitive (right now XPDF
1017          * code is always case insensitive for ASCII
1018          * and case sensitive for all other languaages)
1019          */
1020
1021         if (pdf_document->search &&
1022             strcmp (search_string, pdf_document->search->text) == 0)
1023                 return;
1024
1025         if (pdf_document->search)
1026                 pdf_document_search_free (pdf_document->search);
1027
1028         pdf_document->search = pdf_document_search_new (pdf_document,
1029                                                         page,
1030                                                         search_string);
1031 }
1032
1033 int
1034 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
1035 {
1036         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1037
1038         if (search) {
1039                 return g_list_length (search->pages[page]);
1040         } else {
1041                 return 0;
1042         }
1043 }
1044
1045 gboolean
1046 pdf_document_find_get_result (EvDocumentFind *document_find,
1047                               int             page,
1048                               int             n_result,
1049                               EvRectangle    *rectangle)
1050 {
1051         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
1052         PdfDocumentSearch *search = pdf_document->search;
1053         PopplerPage *poppler_page;
1054         PopplerRectangle *r;
1055         double height;
1056
1057         if (search == NULL)
1058                 return FALSE;
1059
1060         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
1061                                                   n_result);
1062         if (r == NULL)
1063                 return FALSE;
1064
1065         poppler_page = poppler_document_get_page (pdf_document->document, page);
1066         poppler_page_get_size (poppler_page, NULL, &height);
1067         rectangle->x1 = r->x1;
1068         rectangle->y1 = height - r->y2;
1069         rectangle->x2 = r->x2;
1070         rectangle->y2 = height - r->y1;
1071         g_object_unref (poppler_page);
1072
1073         return TRUE;
1074 }
1075
1076 int
1077 pdf_document_find_page_has_results (EvDocumentFind *document_find,
1078                                     int             page)
1079 {
1080         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
1081
1082         g_return_val_if_fail (search != NULL, FALSE);
1083
1084         return search->pages[page] != NULL;
1085 }
1086
1087 double
1088 pdf_document_find_get_progress (EvDocumentFind *document_find)
1089 {
1090         PdfDocumentSearch *search;
1091         int n_pages, pages_done;
1092
1093         search = PDF_DOCUMENT (document_find)->search;
1094
1095         if (search == NULL) {
1096                 return 0;
1097         }
1098
1099         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
1100         if (search->search_page > search->start_page) {
1101                 pages_done = search->search_page - search->start_page + 1;
1102         } else if (search->search_page == search->start_page) {
1103                 pages_done = n_pages;
1104         } else {
1105                 pages_done = n_pages - search->start_page + search->search_page;
1106         }
1107
1108         return pages_done / (double) n_pages;
1109 }
1110
1111 static void
1112 pdf_document_find_cancel (EvDocumentFind *document)
1113 {
1114         PdfDocument *pdf_document = PDF_DOCUMENT (document);
1115
1116         if (pdf_document->search) {
1117                 pdf_document_search_free (pdf_document->search);
1118                 pdf_document->search = NULL;
1119         }
1120 }
1121
1122 static void
1123 pdf_document_find_iface_init (EvDocumentFindIface *iface)
1124 {
1125         iface->begin = pdf_document_find_begin;
1126         iface->get_n_results = pdf_document_find_get_n_results;
1127         iface->get_result = pdf_document_find_get_result;
1128         iface->page_has_results = pdf_document_find_page_has_results;
1129         iface->get_progress = pdf_document_find_get_progress;
1130         iface->cancel = pdf_document_find_cancel;
1131 }
1132
1133 static void
1134 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename,
1135                                 int first_page, int last_page,
1136                                 double width, double height, gboolean duplex)
1137 {
1138         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1139
1140         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document, filename,
1141                                                      first_page,
1142                                                      last_page - first_page + 1);
1143         poppler_ps_file_set_paper_size (pdf_document->ps_file, width, height);
1144         poppler_ps_file_set_duplex (pdf_document->ps_file, duplex);
1145 }
1146
1147 static void
1148 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, EvRenderContext *rc)
1149 {
1150         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1151         PopplerPage *poppler_page;
1152
1153         g_return_if_fail (pdf_document->ps_file != NULL);
1154
1155         poppler_page = poppler_document_get_page (pdf_document->document, rc->page);
1156         set_page_orientation (pdf_document, poppler_page, rc->rotation);
1157         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
1158         g_object_unref (poppler_page);
1159 }
1160
1161 static void
1162 pdf_document_ps_exporter_end (EvPSExporter *exporter)
1163 {
1164         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
1165
1166         poppler_ps_file_free (pdf_document->ps_file);
1167         pdf_document->ps_file = NULL;
1168 }
1169
1170 static void
1171 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
1172 {
1173         iface->begin = pdf_document_ps_exporter_begin;
1174         iface->do_page = pdf_document_ps_exporter_do_page;
1175         iface->end = pdf_document_ps_exporter_end;
1176 }
1177
1178
1179 void
1180 pdf_selection_render_selection (EvSelection      *selection,
1181                                 EvRenderContext  *rc,
1182                                 GdkPixbuf       **pixbuf,
1183                                 EvRectangle      *points,
1184                                 EvRectangle      *old_points,
1185                                 guint             text,
1186                                 guint             base)
1187 {
1188         PdfDocument *pdf_document;
1189         double width_points, height_points;
1190         gint width, height;
1191
1192         pdf_document = PDF_DOCUMENT (selection);
1193         set_rc_data (pdf_document, rc);
1194
1195         set_page_orientation (pdf_document, POPPLER_PAGE (rc->data), rc->rotation);
1196
1197         poppler_page_get_size (POPPLER_PAGE (rc->data), &width_points, &height_points);
1198         width = (int) ((width_points * rc->scale) + 0.5);
1199         height = (int) ((height_points * rc->scale) + 0.5);
1200
1201         if (*pixbuf == NULL) {
1202                 * pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
1203                                            TRUE, 8,
1204                                            width, height);
1205         }
1206
1207         poppler_page_render_selection (POPPLER_PAGE (rc->data),
1208                                        rc->scale, *pixbuf,
1209                                        (PopplerRectangle *)points,
1210                                        (PopplerRectangle *)old_points,
1211                                        text,
1212                                        base);
1213 }
1214
1215
1216 GdkRegion *
1217 pdf_selection_get_selection_region (EvSelection     *selection,
1218                                     EvRenderContext *rc,
1219                                     EvRectangle     *points)
1220 {
1221         PdfDocument *pdf_document;
1222         GdkRegion *retval;
1223
1224         pdf_document = PDF_DOCUMENT (selection);
1225
1226         set_rc_data (pdf_document, rc);
1227         set_page_orientation (pdf_document, POPPLER_PAGE (rc->data), rc->rotation);
1228
1229         retval = poppler_page_get_selection_region ((PopplerPage *)rc->data, rc->scale, (PopplerRectangle *) points);
1230
1231         return retval;
1232 }
1233
1234 GdkRegion *
1235 pdf_selection_get_selection_map (EvSelection     *selection,
1236                                  EvRenderContext *rc)
1237 {
1238         PdfDocument *pdf_document;
1239         PopplerPage *poppler_page;
1240         PopplerRectangle points;
1241         GdkRegion *retval;
1242
1243         pdf_document = PDF_DOCUMENT (selection);
1244         poppler_page = poppler_document_get_page (pdf_document->document,
1245                                                   rc->page);
1246         set_page_orientation (pdf_document, poppler_page, rc->rotation);
1247
1248         points.x1 = 0.0;
1249         points.y1 = 0.0;
1250         poppler_page_get_size (poppler_page, &(points.x2), &(points.y2));
1251         retval = poppler_page_get_selection_region (poppler_page, 1.0, &points);
1252         g_object_unref (poppler_page);
1253
1254         return retval;
1255 }
1256
1257 static void
1258 pdf_selection_iface_init (EvSelectionIface *iface)
1259 {
1260         iface->render_selection = pdf_selection_render_selection;
1261         iface->get_selection_region = pdf_selection_get_selection_region;
1262         iface->get_selection_map = pdf_selection_get_selection_map;
1263 }
1264
1265 PdfDocument *
1266 pdf_document_new (void)
1267 {
1268         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
1269 }