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
  27 #include "ev-poppler.h"
  28 #include "ev-ps-exporter.h"
  29 #include "ev-document-find.h"
  30 #include "ev-document-misc.h"
  31 #include "ev-document-links.h"
  32 #include "ev-document-security.h"
  33 #include "ev-document-thumbnails.h"
  34
  35
  36 enum {
  37         PROP_0,
  38         PROP_TITLE
  39 };
  40
  41
  42 typedef struct {
  43         PdfDocument *document;
  44         char *text;
  45         GList **pages;
  46         guint idle;
  47         int start_page;
  48         int search_page;
  49 } PdfDocumentSearch;
  50
  51 struct _PdfDocumentClass
  52 {
  53         GObjectClass parent_class;
  54 };
  55
  56 struct _PdfDocument
  57 {
  58         GObject parent_instance;
  59
  60         PopplerDocument *document;
  61         PopplerPSFile *ps_file;
  62         gchar *password;
  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_find_iface_init                (EvDocumentFindIface       *iface);
  72 static void pdf_document_ps_exporter_iface_init         (EvPSExporterIface         *iface);
  73 static void pdf_document_thumbnails_get_dimensions      (EvDocumentThumbnails      *document_thumbnails,
  74                                                          gint                       page,
  75                                                          gint                       size,
  76                                                          gint                      *width,
  77                                                          gint                      *height);
  78 static EvLink * ev_link_from_action (PopplerAction *action);
  79
  80
  81 G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT,
  82                          {
  83                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
  84                                                         pdf_document_document_iface_init);
  85                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY,
  86                                                         pdf_document_security_iface_init);
  87                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
  88                                                         pdf_document_document_thumbnails_iface_init);
  89                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS,
  90                                                         pdf_document_document_links_iface_init);
  91                                  G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND,
  92                                                         pdf_document_find_iface_init);
  93                                  G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER,
  94                                                         pdf_document_ps_exporter_iface_init);
  95                          });
  96
  97
  98 static void
  99 pdf_document_get_property (GObject *object,
 100                            guint prop_id,
 101                            GValue *value,
 102                            GParamSpec *pspec)
 103 {
 104         PdfDocument *pdf_document = PDF_DOCUMENT (object);
 105
 106         switch (prop_id)
 107         {
 108                 case PROP_TITLE:
 109                         if (pdf_document->document == NULL)
 110                                 g_value_set_string (value, NULL);
 111                         else
 112                                 g_object_get_property (G_OBJECT (pdf_document->document), "title", value);
 113                         break;
 114         }
 115 }
 116
 117 static void
 118 pdf_document_class_init (PdfDocumentClass *klass)
 119 {
 120         GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 121
 122         gobject_class->get_property = pdf_document_get_property;
 123
 124         g_object_class_override_property (gobject_class, PROP_TITLE, "title");
 125 }
 126
 127 static void
 128 pdf_document_init (PdfDocument *pdf_document)
 129 {
 130         pdf_document->password = NULL;
 131 }
 132
 133 static void
 134 convert_error (GError  *poppler_error,
 135                GError **error)
 136 {
 137         if (poppler_error == NULL)
 138                 return;
 139
 140         if (poppler_error->domain == POPPLER_ERROR) {
 141                 /* convert poppler errors into EvDocument errors */
 142                 gint code = EV_DOCUMENT_ERROR_INVALID;
 143                 if (poppler_error->code == POPPLER_ERROR_INVALID)
 144                         code = EV_DOCUMENT_ERROR_INVALID;
 145                 else if (poppler_error->code == POPPLER_ERROR_ENCRYPTED)
 146                         code = EV_DOCUMENT_ERROR_ENCRYPTED;
 147
 148
 149                 g_set_error (error,
 150                              EV_DOCUMENT_ERROR,
 151                              code,
 152                              poppler_error->message,
 153                              NULL);
 154         } else {
 155                 g_propagate_error (error, poppler_error);
 156         }
 157 }
 158
 159
 160 /* EvDocument */
 161 static gboolean
 162 pdf_document_save (EvDocument  *document,
 163                    const char  *uri,
 164                    GError     **error)
 165 {
 166         gboolean retval;
 167         GError *poppler_error = NULL;
 168
 169         retval = poppler_document_save (PDF_DOCUMENT (document)->document,
 170                                         uri,
 171                                         &poppler_error);
 172         if (! retval)
 173                 convert_error (poppler_error, error);
 174
 175         return retval;
 176 }
 177
 178 static gboolean
 179 pdf_document_load (EvDocument   *document,
 180                    const char   *uri,
 181                    GError      **error)
 182 {
 183         GError *poppler_error = NULL;
 184         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 185
 186         pdf_document->document =
 187                 poppler_document_new_from_file (uri, pdf_document->password, &poppler_error);
 188
 189         if (pdf_document->document == NULL) {
 190                 convert_error (poppler_error, error);
 191                 return FALSE;
 192         }
 193
 194         return TRUE;
 195 }
 196
 197 static int
 198 pdf_document_get_n_pages (EvDocument *document)
 199 {
 200         return poppler_document_get_n_pages (PDF_DOCUMENT (document)->document);
 201 }
 202
 203 static void
 204 pdf_document_get_page_size (EvDocument   *document,
 205                             int           page,
 206                             double       *width,
 207                             double       *height)
 208 {
 209         PopplerPage *poppler_page;
 210
 211         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 212                                                   page);
 213
 214         poppler_page_get_size (poppler_page, width, height);
 215 }
 216
 217 static char *
 218 pdf_document_get_page_label (EvDocument *document,
 219                              int         page)
 220 {
 221         PopplerPage *poppler_page;
 222         char *label = NULL;
 223
 224         poppler_page = poppler_document_get_page (PDF_DOCUMENT (document)->document,
 225                                                   page);
 226
 227         g_object_get (poppler_page,
 228                       "label", &label,
 229                       NULL);
 230
 231         return label;
 232 }
 233
 234 static GList *
 235 pdf_document_get_links (EvDocument *document,
 236                         int         page)
 237 {
 238         PdfDocument *pdf_document;
 239         PopplerPage *poppler_page;
 240         GList *retval = NULL;
 241         GList *mapping_list;
 242         GList *list;
 243         double height;
 244
 245         pdf_document = PDF_DOCUMENT (document);
 246         poppler_page = poppler_document_get_page (pdf_document->document,
 247                                                   page);
 248         mapping_list = poppler_page_get_link_mapping (poppler_page);
 249         poppler_page_get_size (poppler_page, NULL, &height);
 250
 251         for (list = mapping_list; list; list = list->next) {
 252                 PopplerLinkMapping *link_mapping;
 253                 EvLinkMapping *ev_link_mapping;
 254
 255                 link_mapping = (PopplerLinkMapping *)list->data;
 256                 ev_link_mapping = g_new (EvLinkMapping, 1);
 257                 ev_link_mapping->link = ev_link_from_action (link_mapping->action);
 258                 ev_link_mapping->x1 = link_mapping->area.x1;
 259                 ev_link_mapping->x2 = link_mapping->area.x2;
 260                 /* Invert this for X-style coordinates */
 261                 ev_link_mapping->y1 = height - link_mapping->area.y2;
 262                 ev_link_mapping->y2 = height - link_mapping->area.y1;
 263
 264                 retval = g_list_prepend (retval, ev_link_mapping);
 265         }
 266
 267         poppler_page_free_link_mapping (mapping_list);
 268
 269         return g_list_reverse (retval);
 270 }
 271
 272
 273 static GdkPixbuf *
 274 pdf_document_render_pixbuf (EvDocument   *document,
 275                             int           page,
 276                             double        scale)
 277 {
 278         PdfDocument *pdf_document;
 279         PopplerPage *poppler_page;
 280         GdkPixbuf *pixbuf;
 281         double width_points, height_points;
 282         gint width, height;
 283
 284         pdf_document = PDF_DOCUMENT (document);
 285         poppler_page = poppler_document_get_page (pdf_document->document,
 286                                                   page);
 287
 288         poppler_page_get_size (poppler_page, &width_points, &height_points);
 289         width = (int) ceil (width_points * scale);
 290         height = (int) ceil (height_points * scale);
 291
 292         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
 293                                  FALSE, 8,
 294                                  width, height);
 295
 296         poppler_page_render_to_pixbuf (poppler_page,
 297                                        0, 0,
 298                                        width, height,
 299                                        scale,
 300                                        pixbuf,
 301                                        0, 0);
 302
 303         return pixbuf;
 304 }
 305
 306 /* EvDocumentSecurity */
 307
 308 static gboolean
 309 pdf_document_has_document_security (EvDocumentSecurity *document_security)
 310 {
 311         /* FIXME: do we really need to have this? */
 312         return FALSE;
 313 }
 314
 315 static void
 316 pdf_document_set_password (EvDocumentSecurity *document_security,
 317                            const char         *password)
 318 {
 319         PdfDocument *document = PDF_DOCUMENT (document_security);
 320
 321         if (document->password)
 322                 g_free (document->password);
 323
 324         document->password = g_strdup (password);
 325 }
 326
 327 static gboolean
 328 pdf_document_can_get_text (EvDocument *document)
 329 {
 330         return TRUE;
 331 }
 332
 333 static EvDocumentInfo *
 334 pdf_document_get_info (EvDocument *document)
 335 {
 336         EvDocumentInfo *info;
 337         PopplerPageLayout layout;
 338         PopplerPageMode mode;
 339         PopplerViewerPreferences view_prefs;
 340
 341         info = g_new0 (EvDocumentInfo, 1);
 342
 343         info->fields_mask = EV_DOCUMENT_INFO_TITLE |
 344                             EV_DOCUMENT_INFO_FORMAT |
 345                             EV_DOCUMENT_INFO_AUTHOR |
 346                             EV_DOCUMENT_INFO_SUBJECT |
 347                             EV_DOCUMENT_INFO_KEYWORDS |
 348                             EV_DOCUMENT_INFO_LAYOUT |
 349                             EV_DOCUMENT_INFO_START_MODE |
 350                             /* Missing EV_DOCUMENT_INFO_CREATION_DATE | */
 351                             EV_DOCUMENT_INFO_UI_HINTS;
 352
 353
 354         g_object_get (PDF_DOCUMENT (document)->document,
 355                       "title", &(info->title),
 356                       "format", &(info->format),
 357                       "author", &(info->author),
 358                       "subject", &(info->subject),
 359                       "keywords", &(info->keywords),
 360                       "page-mode", &mode,
 361                       "page-layout", &layout,
 362                       "viewer-preferences", &view_prefs,
 363                       NULL);
 364
 365         switch (layout) {
 366                 case POPPLER_PAGE_LAYOUT_SINGLE_PAGE:
 367                         info->layout = EV_DOCUMENT_LAYOUT_SINGLE_PAGE;
 368                         break;
 369                 case POPPLER_PAGE_LAYOUT_ONE_COLUMN:
 370                         info->layout = EV_DOCUMENT_LAYOUT_ONE_COLUMN;
 371                         break;
 372                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_LEFT:
 373                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_LEFT;
 374                         break;
 375                 case POPPLER_PAGE_LAYOUT_TWO_COLUMN_RIGHT:
 376                         info->layout = EV_DOCUMENT_LAYOUT_TWO_COLUMN_RIGHT;
 377                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_LEFT:
 378                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_LEFT;
 379                         break;
 380                 case POPPLER_PAGE_LAYOUT_TWO_PAGE_RIGHT:
 381                         info->layout = EV_DOCUMENT_LAYOUT_TWO_PAGE_RIGHT;
 382                         break;
 383         }
 384
 385         switch (mode) {
 386                 case POPPLER_PAGE_MODE_NONE:
 387                         info->mode = EV_DOCUMENT_MODE_NONE;
 388                         break;
 389                 case POPPLER_PAGE_MODE_USE_THUMBS:
 390                         info->mode = EV_DOCUMENT_MODE_USE_THUMBS;
 391                         break;
 392                 case POPPLER_PAGE_MODE_USE_OC:
 393                         info->mode = EV_DOCUMENT_MODE_USE_OC;
 394                         break;
 395                 case POPPLER_PAGE_MODE_FULL_SCREEN:
 396                         info->mode = EV_DOCUMENT_MODE_FULL_SCREEN;
 397                         break;
 398                 case POPPLER_PAGE_MODE_USE_ATTACHMENTS:
 399                         info->mode = EV_DOCUMENT_MODE_USE_ATTACHMENTS;
 400         }
 401
 402         info->ui_hints = 0;
 403         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_TOOLBAR) {
 404                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_TOOLBAR;
 405         }
 406         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_MENUBAR) {
 407                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_MENUBAR;
 408         }
 409         if (view_prefs & POPPLER_VIEWER_PREFERENCES_HIDE_WINDOWUI) {
 410                 info->ui_hints |= EV_DOCUMENT_UI_HINT_HIDE_WINDOWUI;
 411         }
 412         if (view_prefs & POPPLER_VIEWER_PREFERENCES_FIT_WINDOW) {
 413                 info->ui_hints |= EV_DOCUMENT_UI_HINT_FIT_WINDOW;
 414         }
 415         if (view_prefs & POPPLER_VIEWER_PREFERENCES_CENTER_WINDOW) {
 416                 info->ui_hints |= EV_DOCUMENT_UI_HINT_CENTER_WINDOW;
 417         }
 418         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DISPLAY_DOC_TITLE) {
 419                 info->ui_hints |= EV_DOCUMENT_UI_HINT_DISPLAY_DOC_TITLE;
 420         }
 421         if (view_prefs & POPPLER_VIEWER_PREFERENCES_DIRECTION_RTL) {
 422                 info->ui_hints |=  EV_DOCUMENT_UI_HINT_DIRECTION_RTL;
 423         }
 424
 425         return info;
 426 }
 427
 428 static char *
 429 pdf_document_get_text (EvDocument *document, int page, EvRectangle *rect)
 430 {
 431         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 432         PopplerPage *poppler_page;
 433         PopplerRectangle r;
 434         double height;
 435
 436         poppler_page = poppler_document_get_page (pdf_document->document, page);
 437         g_return_val_if_fail (poppler_page != NULL, NULL);
 438
 439         poppler_page_get_size (poppler_page, NULL, &height);
 440         r.x1 = rect->x1;
 441         r.y1 = height - rect->y2;
 442         r.x2 = rect->x2;
 443         r.y2 = height - rect->y1;
 444
 445         return poppler_page_get_text (poppler_page, &r);
 446 }
 447
 448 static void
 449 pdf_document_document_iface_init (EvDocumentIface *iface)
 450 {
 451         iface->save = pdf_document_save;
 452         iface->load = pdf_document_load;
 453         iface->get_n_pages = pdf_document_get_n_pages;
 454         iface->get_page_size = pdf_document_get_page_size;
 455         iface->get_page_label = pdf_document_get_page_label;
 456         iface->get_links = pdf_document_get_links;
 457         iface->render_pixbuf = pdf_document_render_pixbuf;
 458         iface->get_text = pdf_document_get_text;
 459         iface->can_get_text = pdf_document_can_get_text;
 460         iface->get_info = pdf_document_get_info;
 461 };
 462
 463 static void
 464 pdf_document_security_iface_init (EvDocumentSecurityIface *iface)
 465 {
 466         iface->has_document_security = pdf_document_has_document_security;
 467         iface->set_password = pdf_document_set_password;
 468 }
 469
 470 static gboolean
 471 pdf_document_links_has_document_links (EvDocumentLinks *document_links)
 472 {
 473         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 474         PopplerIndexIter *iter;
 475
 476         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE);
 477
 478         iter = poppler_index_iter_new (pdf_document->document);
 479         if (iter == NULL)
 480                 return FALSE;
 481         poppler_index_iter_free (iter);
 482
 483         return TRUE;
 484 }
 485
 486 static EvLink *
 487 ev_link_from_action (PopplerAction *action)
 488 {
 489         EvLink *link;
 490         const char *title;
 491
 492         title = action->any.title;
 493
 494         if (action->type == POPPLER_ACTION_GOTO_DEST) {
 495                 link = ev_link_new_page (title, action->goto_dest.dest->page_num - 1);
 496         } else if (action->type == POPPLER_ACTION_URI) {
 497                 link = ev_link_new_external (title, action->uri.uri);
 498         } else {
 499                 link = ev_link_new_title (title);
 500         }
 501
 502         return link;
 503 }
 504
 505
 506 static void
 507 build_tree (PdfDocument      *pdf_document,
 508             GtkTreeModel     *model,
 509             GtkTreeIter      *parent,
 510             PopplerIndexIter *iter)
 511 {
 512
 513         do {
 514                 GtkTreeIter tree_iter;
 515                 PopplerIndexIter *child;
 516                 PopplerAction *action;
 517                 EvLink *link;
 518
 519                 action = poppler_index_iter_get_action (iter);
 520                 if (action) {
 521                         gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
 522                         link = ev_link_from_action (action);
 523                         poppler_action_free (action);
 524
 525                         gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
 526                                             EV_DOCUMENT_LINKS_COLUMN_MARKUP, ev_link_get_title (link),
 527                                             EV_DOCUMENT_LINKS_COLUMN_LINK, link,
 528                                             -1);
 529                         child = poppler_index_iter_get_child (iter);
 530                         if (child)
 531                                 build_tree (pdf_document, model, &tree_iter, child);
 532                         poppler_index_iter_free (child);
 533                 }
 534         } while (poppler_index_iter_next (iter));
 535 }
 536
 537
 538 static GtkTreeModel *
 539 pdf_document_links_get_links_model (EvDocumentLinks *document_links)
 540 {
 541         PdfDocument *pdf_document = PDF_DOCUMENT (document_links);
 542         GtkTreeModel *model = NULL;
 543         PopplerIndexIter *iter;
 544
 545         g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL);
 546
 547         iter = poppler_index_iter_new (pdf_document->document);
 548         /* Create the model iff we have items*/
 549         if (iter != NULL) {
 550                 model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS,
 551                                                              G_TYPE_STRING,
 552                                                              G_TYPE_POINTER);
 553                 build_tree (pdf_document, model, NULL, iter);
 554                 poppler_index_iter_free (iter);
 555         }
 556
 557
 558         return model;
 559 }
 560
 561
 562 static void
 563 pdf_document_document_links_iface_init (EvDocumentLinksIface *iface)
 564 {
 565         iface->has_document_links = pdf_document_links_has_document_links;
 566         iface->get_links_model = pdf_document_links_get_links_model;
 567 }
 568
 569
 570 static GdkPixbuf *
 571 make_thumbnail_for_size (PdfDocument *pdf_document,
 572                          gint         page,
 573                          gint         size,
 574                          gboolean     border)
 575 {
 576         PopplerPage *poppler_page;
 577         GdkPixbuf *pixbuf;
 578         int width, height;
 579         int x_offset, y_offset;
 580         double scale;
 581         gdouble unscaled_width, unscaled_height;
 582
 583         poppler_page = poppler_document_get_page (pdf_document->document, page);
 584
 585         g_return_val_if_fail (poppler_page != NULL, NULL);
 586
 587         pdf_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (pdf_document), page, size, &width, &height);
 588         poppler_page_get_size (poppler_page, &unscaled_width, &unscaled_height);
 589         scale = width / unscaled_width;
 590
 591         if (border) {
 592                 pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 593                 x_offset = 1;
 594                 y_offset = 1;
 595         } else {
 596                 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
 597                                          width, height);
 598                 gdk_pixbuf_fill (pixbuf, 0xffffffff);
 599                 x_offset = 0;
 600                 y_offset = 0;
 601         }
 602
 603         poppler_page_render_to_pixbuf (poppler_page, 0, 0,
 604                                        width, height,
 605                                        scale, pixbuf,
 606                                        x_offset, y_offset);
 607
 608         return pixbuf;
 609 }
 610
 611 static GdkPixbuf *
 612 pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails,
 613                                        gint                  page,
 614                                        gint                  size,
 615                                        gboolean              border)
 616 {
 617         PdfDocument *pdf_document;
 618         PopplerPage *poppler_page;
 619         GdkPixbuf *pixbuf;
 620
 621         pdf_document = PDF_DOCUMENT (document_thumbnails);
 622
 623         poppler_page = poppler_document_get_page (pdf_document->document, page);
 624         g_return_val_if_fail (poppler_page != NULL, NULL);
 625
 626         pixbuf = poppler_page_get_thumbnail (poppler_page);
 627         if (pixbuf != NULL) {
 628                 /* The document provides its own thumbnails. */
 629                 if (border) {
 630                         GdkPixbuf *real_pixbuf;
 631
 632                         real_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, pixbuf);
 633                         g_object_unref (pixbuf);
 634                         pixbuf = real_pixbuf;
 635                 }
 636         } else {
 637                 /* There is no provided thumbnail.  We need to make one. */
 638                 pixbuf = make_thumbnail_for_size (pdf_document, page, size, border);
 639         }
 640         return pixbuf;
 641 }
 642
 643 static void
 644 pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails,
 645                                         gint                  page,
 646                                         gint                  size,
 647                                         gint                 *width,
 648                                         gint                 *height)
 649 {
 650         PdfDocument *pdf_document;
 651         PopplerPage *poppler_page;
 652         gint has_thumb;
 653
 654         pdf_document = PDF_DOCUMENT (document_thumbnails);
 655         poppler_page = poppler_document_get_page (pdf_document->document, page);
 656
 657         g_return_if_fail (width != NULL);
 658         g_return_if_fail (height != NULL);
 659         g_return_if_fail (poppler_page != NULL);
 660
 661         has_thumb = poppler_page_get_thumbnail_size (poppler_page, width, height);
 662
 663         if (!has_thumb) {
 664                 double page_width, page_height;
 665
 666                 poppler_page_get_size (poppler_page, &page_width, &page_height);
 667                 if (page_width > page_height) {
 668                         *width = size;
 669                         *height = (int) (size * page_height / page_width);
 670                 } else {
 671                         *width = (int) (size * page_width / page_height);
 672                         *height = size;
 673                 }
 674         }
 675 }
 676
 677 static void
 678 pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 679 {
 680         iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail;
 681         iface->get_dimensions = pdf_document_thumbnails_get_dimensions;
 682 }
 683
 684
 685 static gboolean
 686 pdf_document_search_idle_callback (void *data)
 687 {
 688         PdfDocumentSearch *search = (PdfDocumentSearch*) data;
 689         PdfDocument *pdf_document = search->document;
 690         int n_pages, changed_page;
 691         GList *matches;
 692         PopplerPage *page;
 693
 694         page = poppler_document_get_page (search->document->document,
 695                                           search->search_page);
 696
 697         g_mutex_lock (EV_DOC_MUTEX);
 698         matches = poppler_page_find_text (page, search->text);
 699         g_mutex_unlock (EV_DOC_MUTEX);
 700
 701         search->pages[search->search_page] = matches;
 702         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document));
 703
 704         changed_page = search->search_page;
 705         search->search_page += 1;
 706         if (search->search_page == n_pages) {
 707                 /* wrap around */
 708                 search->search_page = 0;
 709         }
 710
 711         if (search->search_page != search->start_page) {
 712                 ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document),
 713                                           changed_page);
 714                 return TRUE;
 715         }
 716
 717         /* We're done. */
 718         search->idle = 0; /* will return FALSE to remove */
 719         return FALSE;
 720 }
 721
 722
 723 static PdfDocumentSearch *
 724 pdf_document_search_new (PdfDocument *pdf_document,
 725                          int          start_page,
 726                          const char  *text)
 727 {
 728         PdfDocumentSearch *search;
 729         int n_pages;
 730         int i;
 731
 732         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 733
 734         search = g_new0 (PdfDocumentSearch, 1);
 735
 736         search->text = g_strdup (text);
 737         search->pages = g_new0 (GList *, n_pages);
 738         for (i = 0; i < n_pages; i++) {
 739                 search->pages[i] = NULL;
 740         }
 741
 742         search->document = pdf_document;
 743
 744         /* We add at low priority so the progress bar repaints */
 745         search->idle = g_idle_add_full (G_PRIORITY_LOW,
 746                                         pdf_document_search_idle_callback,
 747                                         search,
 748                                         NULL);
 749
 750         search->start_page = start_page;
 751         search->search_page = start_page;
 752
 753         return search;
 754 }
 755
 756 static void
 757 pdf_document_search_free (PdfDocumentSearch   *search)
 758 {
 759         PdfDocument *pdf_document = search->document;
 760         int n_pages;
 761         int i;
 762
 763         if (search->idle != 0)
 764                 g_source_remove (search->idle);
 765
 766         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document));
 767         for (i = 0; i < n_pages; i++) {
 768                 g_list_foreach (search->pages[i], (GFunc) g_free, NULL);
 769                 g_list_free (search->pages[i]);
 770         }
 771
 772         g_free (search->text);
 773 }
 774
 775 static void
 776 pdf_document_find_begin (EvDocumentFind   *document,
 777                          int               page,
 778                          const char       *search_string,
 779                          gboolean          case_sensitive)
 780 {
 781         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 782
 783         /* FIXME handle case_sensitive (right now XPDF
 784          * code is always case insensitive for ASCII
 785          * and case sensitive for all other languaages)
 786          */
 787
 788         if (pdf_document->search &&
 789             strcmp (search_string, pdf_document->search->text) == 0)
 790                 return;
 791
 792         if (pdf_document->search)
 793                 pdf_document_search_free (pdf_document->search);
 794
 795         pdf_document->search = pdf_document_search_new (pdf_document,
 796                                                         page,
 797                                                         search_string);
 798 }
 799
 800 int
 801 pdf_document_find_get_n_results (EvDocumentFind *document_find, int page)
 802 {
 803         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 804         int current_page;
 805
 806         if (search) {
 807                 return g_list_length (search->pages[page]);
 808         } else {
 809                 return 0;
 810         }
 811 }
 812
 813 gboolean
 814 pdf_document_find_get_result (EvDocumentFind *document_find,
 815                               int             page,
 816                               int             n_result,
 817                               EvRectangle    *rectangle)
 818 {
 819         PdfDocument *pdf_document = PDF_DOCUMENT (document_find);
 820         PdfDocumentSearch *search = pdf_document->search;
 821         PopplerPage *poppler_page;
 822         PopplerRectangle *r;
 823         int current_page;
 824         double height;
 825
 826         if (search == NULL)
 827                 return FALSE;
 828
 829         r = (PopplerRectangle *) g_list_nth_data (search->pages[page],
 830                                                   n_result);
 831         if (r == NULL)
 832                 return FALSE;
 833
 834         poppler_page = poppler_document_get_page (pdf_document->document, page);
 835         poppler_page_get_size (poppler_page, NULL, &height);
 836         rectangle->x1 = r->x1;
 837         rectangle->y1 = height - r->y2;
 838         rectangle->x2 = r->x2;
 839         rectangle->y2 = height - r->y1;
 840
 841         return TRUE;
 842 }
 843
 844 int
 845 pdf_document_find_page_has_results (EvDocumentFind *document_find,
 846                                     int             page)
 847 {
 848         PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search;
 849
 850         g_return_val_if_fail (search != NULL, FALSE);
 851
 852         return search->pages[page] != NULL;
 853 }
 854
 855 double
 856 pdf_document_find_get_progress (EvDocumentFind *document_find)
 857 {
 858         PdfDocumentSearch *search;
 859         int n_pages, pages_done;
 860
 861         search = PDF_DOCUMENT (document_find)->search;
 862
 863         if (search == NULL) {
 864                 return 0;
 865         }
 866
 867         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find));
 868         if (search->search_page > search->start_page) {
 869                 pages_done = search->search_page - search->start_page + 1;
 870         } else if (search->search_page == search->start_page) {
 871                 pages_done = n_pages;
 872         } else {
 873                 pages_done = n_pages - search->start_page + search->search_page;
 874         }
 875
 876         return pages_done / (double) n_pages;
 877 }
 878
 879 static void
 880 pdf_document_find_cancel (EvDocumentFind *document)
 881 {
 882         PdfDocument *pdf_document = PDF_DOCUMENT (document);
 883
 884         if (pdf_document->search) {
 885                 pdf_document_search_free (pdf_document->search);
 886                 pdf_document->search = NULL;
 887         }
 888 }
 889
 890 static void
 891 pdf_document_find_iface_init (EvDocumentFindIface *iface)
 892 {
 893         iface->begin = pdf_document_find_begin;
 894         iface->get_n_results = pdf_document_find_get_n_results;
 895         iface->get_result = pdf_document_find_get_result;
 896         iface->page_has_results = pdf_document_find_page_has_results;
 897         iface->get_progress = pdf_document_find_get_progress;
 898         iface->cancel = pdf_document_find_cancel;
 899 }
 900
 901 static void
 902 pdf_document_ps_exporter_begin (EvPSExporter *exporter, const char *filename)
 903 {
 904         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 905         int n_pages;
 906
 907         n_pages = pdf_document_get_n_pages (EV_DOCUMENT (exporter));
 908         pdf_document->ps_file = poppler_ps_file_new (pdf_document->document,
 909                                                      filename, n_pages);
 910 }
 911
 912 static void
 913 pdf_document_ps_exporter_do_page (EvPSExporter *exporter, int page)
 914 {
 915         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 916         PopplerPage *poppler_page;
 917
 918         g_return_if_fail (pdf_document->ps_file != NULL);
 919
 920         poppler_page = poppler_document_get_page (pdf_document->document, page);
 921         poppler_page_render_to_ps (poppler_page, pdf_document->ps_file);
 922 }
 923
 924 static void
 925 pdf_document_ps_exporter_end (EvPSExporter *exporter)
 926 {
 927         PdfDocument *pdf_document = PDF_DOCUMENT (exporter);
 928
 929         poppler_ps_file_free (pdf_document->ps_file);
 930         pdf_document->ps_file = NULL;
 931 }
 932
 933 static void
 934 pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface)
 935 {
 936         iface->begin = pdf_document_ps_exporter_begin;
 937         iface->do_page = pdf_document_ps_exporter_do_page;
 938         iface->end = pdf_document_ps_exporter_end;
 939 }
 940
 941 PdfDocument *
 942 pdf_document_new (void)
 943 {
 944         return PDF_DOCUMENT (g_object_new (PDF_TYPE_DOCUMENT, NULL));
 945 }