backend/djvu/djvu-document.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /*
   3  * Copyright (C) 2005, Nickolay V. Shmyrev <nshmyrev@yandex.ru>
   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 "config.h"
  21
  22 #include <config.h>
  23 #include "djvu-document.h"
  24 #include "djvu-text-page.h"
  25 #include "djvu-links.h"
  26 #include "djvu-document-private.h"
  27 #include "ev-document-thumbnails.h"
  28 #include "ev-file-exporter.h"
  29 #include "ev-document-misc.h"
  30 #include "ev-document-find.h"
  31 #include "ev-document-links.h"
  32 #include "ev-selection.h"
  33 #include "ev-file-helpers.h"
  34
  35 #include <glib.h>
  36 #include <gdk-pixbuf/gdk-pixbuf.h>
  37 #include <glib/gi18n-lib.h>
  38 #include <string.h>
  39
  40 #define SCALE_FACTOR 0.2
  41
  42 enum {
  43         PROP_0,
  44         PROP_TITLE
  45 };
  46
  47 struct _DjvuDocumentClass
  48 {
  49         GObjectClass parent_class;
  50 };
  51
  52 typedef struct _DjvuDocumentClass DjvuDocumentClass;
  53
  54 static void djvu_document_document_iface_init (EvDocumentIface *iface);
  55 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
  56 static void djvu_document_file_exporter_iface_init (EvFileExporterIface *iface);
  57 static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
  58 static void djvu_document_document_links_iface_init  (EvDocumentLinksIface *iface);
  59 static void djvu_selection_iface_init (EvSelectionIface *iface);
  60
  61 EV_BACKEND_REGISTER_WITH_CODE (DjvuDocument, djvu_document,
  62     {
  63       EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init);
  64       EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init);
  65       EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
  66       EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
  67       EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION, djvu_selection_iface_init);
  68      });
  69
  70
  71 #define EV_DJVU_ERROR ev_djvu_error_quark ()
  72
  73 static GQuark
  74 ev_djvu_error_quark (void)
  75 {
  76         static GQuark q = 0;
  77         if (q == 0)
  78                 q = g_quark_from_string ("ev-djvu-quark");
  79
  80         return q;
  81 }
  82
  83 static void
  84 handle_message (const ddjvu_message_t *msg, GError **error)
  85 {
  86         switch (msg->m_any.tag) {
  87                 case DDJVU_ERROR: {
  88                         gchar *error_str;
  89
  90                         if (msg->m_error.filename) {
  91                                 error_str = g_strdup_printf ("DjvuLibre error: %s:%d",
  92                                                              msg->m_error.filename,
  93                                                              msg->m_error.lineno);
  94                         } else {
  95                                 error_str = g_strdup_printf ("DjvuLibre error: %s",
  96                                                              msg->m_error.message);
  97                         }
  98
  99                         if (error) {
 100                                 g_set_error_literal (error, EV_DJVU_ERROR, 0, error_str);
 101                         } else {
 102                                 g_warning ("%s", error_str);
 103                         }
 104
 105                         g_free (error_str);
 106                         return;
 107                         }
 108                         break;
 109                 default:
 110                         break;
 111         }
 112 }
 113
 114 void
 115 djvu_handle_events (DjvuDocument *djvu_document, int wait, GError **error)
 116 {
 117         ddjvu_context_t *ctx = djvu_document->d_context;
 118         const ddjvu_message_t *msg;
 119
 120         if (!ctx)
 121                 return;
 122
 123         if (wait)
 124                 ddjvu_message_wait (ctx);
 125
 126         while ((msg = ddjvu_message_peek (ctx))) {
 127                 handle_message (msg, error);
 128                 ddjvu_message_pop (ctx);
 129                 if (error && *error)
 130                         return;
 131         }
 132 }
 133
 134 static void
 135 djvu_wait_for_message (DjvuDocument *djvu_document, ddjvu_message_tag_t message, GError **error)
 136 {
 137         ddjvu_context_t *ctx = djvu_document->d_context;
 138         const ddjvu_message_t *msg;
 139
 140         ddjvu_message_wait (ctx);
 141         while ((msg = ddjvu_message_peek (ctx)) && (msg->m_any.tag != message)) {
 142                 handle_message (msg, error);
 143                 ddjvu_message_pop (ctx);
 144                 if (error && *error)
 145                         return;
 146         }
 147         if (msg && msg->m_any.tag == message)
 148                 ddjvu_message_pop (ctx);
 149 }
 150
 151 static gboolean
 152 djvu_document_load (EvDocument  *document,
 153                     const char  *uri,
 154                     GError     **error)
 155 {
 156         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 157         ddjvu_document_t *doc;
 158         gchar *filename;
 159         gboolean missing_files = FALSE;
 160         GError *djvu_error = NULL;
 161
 162         /* FIXME: We could actually load uris  */
 163         filename = g_filename_from_uri (uri, NULL, error);
 164         if (!filename)
 165                 return FALSE;
 166
 167         doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
 168
 169         if (!doc) {
 170                 g_free (filename);
 171                 g_set_error_literal (error,
 172                                      EV_DOCUMENT_ERROR,
 173                                      EV_DOCUMENT_ERROR_INVALID,
 174                                      _("DJVU document has incorrect format"));
 175                 return FALSE;
 176         }
 177
 178         if (djvu_document->d_document)
 179             ddjvu_document_release (djvu_document->d_document);
 180
 181         djvu_document->d_document = doc;
 182
 183         djvu_wait_for_message (djvu_document, DDJVU_DOCINFO, &djvu_error);
 184         if (djvu_error) {
 185                 g_set_error_literal (error,
 186                                      EV_DOCUMENT_ERROR,
 187                                      EV_DOCUMENT_ERROR_INVALID,
 188                                      djvu_error->message);
 189                 g_error_free (djvu_error);
 190                 g_free (filename);
 191                 ddjvu_document_release (djvu_document->d_document);
 192                 djvu_document->d_document = NULL;
 193
 194                 return FALSE;
 195         }
 196
 197         if (ddjvu_document_decoding_error (djvu_document->d_document))
 198                 djvu_handle_events (djvu_document, TRUE, &djvu_error);
 199
 200         if (djvu_error) {
 201                 g_set_error_literal (error,
 202                                      EV_DOCUMENT_ERROR,
 203                                      EV_DOCUMENT_ERROR_INVALID,
 204                                      djvu_error->message);
 205                 g_error_free (djvu_error);
 206                 g_free (filename);
 207                 ddjvu_document_release (djvu_document->d_document);
 208                 djvu_document->d_document = NULL;
 209
 210                 return FALSE;
 211         }
 212
 213         g_free (djvu_document->uri);
 214         djvu_document->uri = g_strdup (uri);
 215
 216         if (ddjvu_document_get_type (djvu_document->d_document) == DDJVU_DOCTYPE_INDIRECT) {
 217                 gint n_files;
 218                 gint i;
 219                 gchar *base;
 220
 221                 base = g_path_get_dirname (filename);
 222
 223                 n_files = ddjvu_document_get_filenum (djvu_document->d_document);
 224                 for (i = 0; i < n_files; i++) {
 225                         struct ddjvu_fileinfo_s fileinfo;
 226                         gchar *file;
 227
 228                         ddjvu_document_get_fileinfo (djvu_document->d_document,
 229                                                      i, &fileinfo);
 230
 231                         if (fileinfo.type != 'P')
 232                                 continue;
 233
 234                         file = g_build_filename (base, fileinfo.id, NULL);
 235                         if (!g_file_test (file, G_FILE_TEST_EXISTS)) {
 236                                 missing_files = TRUE;
 237                                 g_free (file);
 238
 239                                 break;
 240                         }
 241                         g_free (file);
 242                 }
 243                 g_free (base);
 244         }
 245         g_free (filename);
 246
 247         if (missing_files) {
 248                 g_set_error_literal (error,
 249                                      G_FILE_ERROR,
 250                                      G_FILE_ERROR_EXIST,
 251                                      _("The document is composed of several files. "
 252                                        "One or more of such files cannot be accessed."));
 253
 254                 return FALSE;
 255         }
 256
 257         return TRUE;
 258 }
 259
 260
 261 static gboolean
 262 djvu_document_save (EvDocument  *document,
 263                     const char  *uri,
 264                     GError     **error)
 265 {
 266         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 267
 268         return ev_xfer_uri_simple (djvu_document->uri, uri, error);
 269 }
 270
 271 int
 272 djvu_document_get_n_pages (EvDocument  *document)
 273 {
 274         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 275
 276         g_return_val_if_fail (djvu_document->d_document, 0);
 277
 278         return ddjvu_document_get_pagenum (djvu_document->d_document);
 279 }
 280
 281 static void
 282 document_get_page_size (DjvuDocument *djvu_document,
 283                         gint          page,
 284                         double       *width,
 285                         double       *height)
 286 {
 287         ddjvu_pageinfo_t info;
 288         ddjvu_status_t r;
 289
 290         while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
 291                 djvu_handle_events(djvu_document, TRUE, NULL);
 292
 293         if (r >= DDJVU_JOB_FAILED)
 294                 djvu_handle_events(djvu_document, TRUE, NULL);
 295
 296         *width = info.width * SCALE_FACTOR;
 297         *height = info.height * SCALE_FACTOR;
 298 }
 299
 300 static void
 301 djvu_document_get_page_size (EvDocument   *document,
 302                              EvPage       *page,
 303                              double       *width,
 304                              double       *height)
 305 {
 306         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 307
 308         g_return_if_fail (djvu_document->d_document);
 309
 310         document_get_page_size (djvu_document, page->index,
 311                                 width, height);
 312 }
 313
 314 static cairo_surface_t *
 315 djvu_document_render (EvDocument      *document,
 316                       EvRenderContext *rc)
 317 {
 318         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 319         cairo_surface_t *surface;
 320         gchar *pixels;
 321         gint   rowstride;
 322         ddjvu_rect_t rrect;
 323         ddjvu_rect_t prect;
 324         ddjvu_page_t *d_page;
 325         ddjvu_page_rotation_t rotation;
 326         double page_width, page_height, tmp;
 327         static const cairo_user_data_key_t key;
 328
 329         d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page->index);
 330
 331         while (!ddjvu_page_decoding_done (d_page))
 332                 djvu_handle_events(djvu_document, TRUE, NULL);
 333
 334         page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5;
 335         page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5;
 336
 337         switch (rc->rotation) {
 338                 case 90:
 339                         rotation = DDJVU_ROTATE_90;
 340                         tmp = page_height;
 341                         page_height = page_width;
 342                         page_width = tmp;
 343
 344                         break;
 345                 case 180:
 346                         rotation = DDJVU_ROTATE_180;
 347
 348                         break;
 349                 case 270:
 350                         rotation = DDJVU_ROTATE_270;
 351                         tmp = page_height;
 352                         page_height = page_width;
 353                         page_width = tmp;
 354
 355                         break;
 356                 default:
 357                         rotation = DDJVU_ROTATE_0;
 358         }
 359 #ifdef HAVE_CAIRO_FORMAT_STRIDE_FOR_WIDTH
 360         rowstride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, page_width);
 361 #else
 362         rowstride = page_width * 4;
 363 #endif
 364         pixels = (gchar *) g_malloc (page_height * rowstride);
 365         surface = cairo_image_surface_create_for_data ((guchar *)pixels,
 366                                                        CAIRO_FORMAT_RGB24,
 367                                                        page_width,
 368                                                        page_height,
 369                                                        rowstride);
 370         cairo_surface_set_user_data (surface, &key,
 371                                      pixels, (cairo_destroy_func_t)g_free);
 372         prect.x = 0;
 373         prect.y = 0;
 374         prect.w = page_width;
 375         prect.h = page_height;
 376         rrect = prect;
 377
 378         ddjvu_page_set_rotation (d_page, rotation);
 379
 380         ddjvu_page_render (d_page, DDJVU_RENDER_COLOR,
 381                            &prect,
 382                            &rrect,
 383                            djvu_document->d_format,
 384                            rowstride,
 385                            pixels);
 386
 387         return surface;
 388 }
 389
 390 static void
 391 djvu_document_finalize (GObject *object)
 392 {
 393         DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
 394
 395         if (djvu_document->d_document)
 396             ddjvu_document_release (djvu_document->d_document);
 397
 398         if (djvu_document->opts)
 399             g_string_free (djvu_document->opts, TRUE);
 400
 401         if (djvu_document->ps_filename)
 402             g_free (djvu_document->ps_filename);
 403
 404         ddjvu_context_release (djvu_document->d_context);
 405         ddjvu_format_release (djvu_document->d_format);
 406         ddjvu_format_release (djvu_document->thumbs_format);
 407         g_free (djvu_document->uri);
 408
 409         G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
 410 }
 411
 412 static void
 413 djvu_document_class_init (DjvuDocumentClass *klass)
 414 {
 415         GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 416
 417         gobject_class->finalize = djvu_document_finalize;
 418 }
 419
 420 static EvDocumentInfo *
 421 djvu_document_get_info (EvDocument *document)
 422 {
 423         EvDocumentInfo *info;
 424
 425         info = g_new0 (EvDocumentInfo, 1);
 426
 427         return info;
 428 }
 429
 430 static void
 431 djvu_document_document_iface_init (EvDocumentIface *iface)
 432 {
 433         iface->load = djvu_document_load;
 434         iface->save = djvu_document_save;
 435         iface->get_n_pages = djvu_document_get_n_pages;
 436         iface->get_page_size = djvu_document_get_page_size;
 437         iface->render = djvu_document_render;
 438         iface->get_info = djvu_document_get_info;
 439 }
 440
 441 static gchar *
 442 djvu_text_copy (DjvuDocument *djvu_document,
 443                 gint           page,
 444                 EvRectangle  *rectangle)
 445 {
 446         miniexp_t page_text;
 447         gchar    *text = NULL;
 448
 449         while ((page_text =
 450                 ddjvu_document_get_pagetext (djvu_document->d_document,
 451                                              page, "char")) == miniexp_dummy)
 452                 djvu_handle_events (djvu_document, TRUE, NULL);
 453
 454         if (page_text != miniexp_nil) {
 455                 DjvuTextPage *page = djvu_text_page_new (page_text);
 456
 457                 text = djvu_text_page_copy (page, rectangle);
 458                 djvu_text_page_free (page);
 459                 ddjvu_miniexp_release (djvu_document->d_document, page_text);
 460         }
 461
 462         return text;
 463 }
 464
 465 static gchar *
 466 djvu_selection_get_selected_text (EvSelection     *selection,
 467                                   EvRenderContext *rc,
 468                                   EvSelectionStyle style,
 469                                   EvRectangle     *points)
 470 {
 471         DjvuDocument *djvu_document = DJVU_DOCUMENT (selection);
 472         double width, height;
 473         EvRectangle rectangle;
 474         gchar *text;
 475
 476         djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
 477                                      rc->page, &width, &height);
 478         rectangle.x1 = points->x1 / SCALE_FACTOR;
 479         rectangle.y1 = (height - points->y2) / SCALE_FACTOR;
 480         rectangle.x2 = points->x2 / SCALE_FACTOR;
 481         rectangle.y2 = (height - points->y1) / SCALE_FACTOR;
 482
 483         text = djvu_text_copy (djvu_document, rc->page->index, &rectangle);
 484
 485         if (text == NULL)
 486                 text = g_strdup ("");
 487
 488         return text;
 489 }
 490
 491 static void
 492 djvu_selection_iface_init (EvSelectionIface *iface)
 493 {
 494         iface->get_selected_text = djvu_selection_get_selected_text;
 495 }
 496
 497 static void
 498 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
 499                                          EvRenderContext      *rc,
 500                                          gint                 *width,
 501                                          gint                 *height)
 502 {
 503         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 504         gdouble page_width, page_height;
 505
 506         djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
 507                                      &page_width, &page_height);
 508
 509         if (rc->rotation == 90 || rc->rotation == 270) {
 510                 *width = (gint) (page_height * rc->scale);
 511                 *height = (gint) (page_width * rc->scale);
 512         } else {
 513                 *width = (gint) (page_width * rc->scale);
 514                 *height = (gint) (page_height * rc->scale);
 515         }
 516 }
 517
 518 static GdkPixbuf *
 519 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
 520                                         EvRenderContext      *rc,
 521                                         gboolean              border)
 522 {
 523         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 524         GdkPixbuf *pixbuf, *rotated_pixbuf;
 525         gdouble page_width, page_height;
 526         gint thumb_width, thumb_height;
 527         guchar *pixels;
 528
 529         g_return_val_if_fail (djvu_document->d_document, NULL);
 530
 531         djvu_document_get_page_size (EV_DOCUMENT(djvu_document), rc->page,
 532                                      &page_width, &page_height);
 533
 534         thumb_width = (gint) (page_width * rc->scale);
 535         thumb_height = (gint) (page_height * rc->scale);
 536
 537         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
 538                                  thumb_width, thumb_height);
 539         gdk_pixbuf_fill (pixbuf, 0xffffffff);
 540         pixels = gdk_pixbuf_get_pixels (pixbuf);
 541
 542         while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page->index, 1) < DDJVU_JOB_OK)
 543                 djvu_handle_events(djvu_document, TRUE, NULL);
 544
 545         ddjvu_thumbnail_render (djvu_document->d_document, rc->page->index,
 546                                 &thumb_width, &thumb_height,
 547                                 djvu_document->thumbs_format,
 548                                 gdk_pixbuf_get_rowstride (pixbuf),
 549                                 (gchar *)pixels);
 550
 551         rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
 552         g_object_unref (pixbuf);
 553
 554         if (border) {
 555               GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
 556
 557               rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
 558               g_object_unref (tmp_pixbuf);
 559         }
 560
 561         return rotated_pixbuf;
 562 }
 563
 564 static void
 565 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
 566 {
 567         iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
 568         iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
 569 }
 570
 571 /* EvFileExporterIface */
 572 static void
 573 djvu_document_file_exporter_begin (EvFileExporter        *exporter,
 574                                    EvFileExporterContext *fc)
 575 {
 576         DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
 577
 578         if (djvu_document->ps_filename)
 579                 g_free (djvu_document->ps_filename);
 580         djvu_document->ps_filename = g_strdup (fc->filename);
 581
 582         g_string_assign (djvu_document->opts, "-page=");
 583 }
 584
 585 static void
 586 djvu_document_file_exporter_do_page (EvFileExporter  *exporter,
 587                                      EvRenderContext *rc)
 588 {
 589         DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
 590
 591         g_string_append_printf (djvu_document->opts, "%d,", (rc->page->index) + 1);
 592 }
 593
 594 static void
 595 djvu_document_file_exporter_end (EvFileExporter *exporter)
 596 {
 597         int d_optc = 1;
 598         const char *d_optv[d_optc];
 599
 600         DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter);
 601
 602         FILE *fn = fopen (djvu_document->ps_filename, "w");
 603         if (fn == NULL) {
 604                 g_warning ("Cannot open file “%s”.", djvu_document->ps_filename);
 605                 return;
 606         }
 607
 608         d_optv[0] = djvu_document->opts->str;
 609
 610         ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv);
 611         while (!ddjvu_job_done(job)) {
 612                 djvu_handle_events (djvu_document, TRUE, NULL);
 613         }
 614
 615         fclose(fn);
 616 }
 617
 618 static EvFileExporterCapabilities
 619 djvu_document_file_exporter_get_capabilities (EvFileExporter *exporter)
 620 {
 621         return  EV_FILE_EXPORTER_CAN_PAGE_SET |
 622                 EV_FILE_EXPORTER_CAN_COPIES |
 623                 EV_FILE_EXPORTER_CAN_COLLATE |
 624                 EV_FILE_EXPORTER_CAN_REVERSE |
 625                 EV_FILE_EXPORTER_CAN_GENERATE_PS;
 626 }
 627
 628 static void
 629 djvu_document_file_exporter_iface_init (EvFileExporterIface *iface)
 630 {
 631         iface->begin = djvu_document_file_exporter_begin;
 632         iface->do_page = djvu_document_file_exporter_do_page;
 633         iface->end = djvu_document_file_exporter_end;
 634         iface->get_capabilities = djvu_document_file_exporter_get_capabilities;
 635 }
 636
 637 static void
 638 djvu_document_init (DjvuDocument *djvu_document)
 639 {
 640         guint masks[4] = { 0xff0000, 0xff00, 0xff, 0xff000000 };
 641
 642         djvu_document->d_context = ddjvu_context_create ("Evince");
 643         djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGBMASK32, 4, masks);
 644         ddjvu_format_set_row_order (djvu_document->d_format, 1);
 645
 646         djvu_document->thumbs_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
 647         ddjvu_format_set_row_order (djvu_document->thumbs_format, 1);
 648
 649         djvu_document->ps_filename = NULL;
 650         djvu_document->opts = g_string_new ("");
 651
 652         djvu_document->d_document = NULL;
 653 }
 654
 655 static GList *
 656 djvu_document_find_find_text (EvDocumentFind   *document,
 657                               EvPage           *page,
 658                               const char       *text,
 659                               gboolean          case_sensitive)
 660 {
 661         DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
 662         miniexp_t page_text;
 663         gdouble width, height;
 664         GList *matches = NULL, *l;
 665
 666         g_return_val_if_fail (text != NULL, NULL);
 667
 668         while ((page_text = ddjvu_document_get_pagetext (djvu_document->d_document,
 669                                                          page->index,
 670                                                          "char")) == miniexp_dummy)
 671                 djvu_handle_events (djvu_document, TRUE, NULL);
 672
 673         if (page_text != miniexp_nil) {
 674                 DjvuTextPage *tpage = djvu_text_page_new (page_text);
 675
 676                 djvu_text_page_prepare_search (tpage, case_sensitive);
 677                 if (tpage->links->len > 0) {
 678                         djvu_text_page_search (tpage, text);
 679                         matches = tpage->results;
 680                 }
 681                 djvu_text_page_free (tpage);
 682                 ddjvu_miniexp_release (djvu_document->d_document, page_text);
 683         }
 684
 685         if (!matches)
 686                 return NULL;
 687
 688         document_get_page_size (djvu_document, page->index, &width, &height);
 689         for (l = matches; l && l->data; l = g_list_next (l)) {
 690                 EvRectangle *r = (EvRectangle *)l->data;
 691                 gdouble      tmp;
 692
 693                 tmp = r->y1;
 694
 695                 r->x1 *= SCALE_FACTOR;
 696                 r->x2 *= SCALE_FACTOR;
 697
 698                 tmp = r->y1;
 699                 r->y1 = height - r->y2 * SCALE_FACTOR;
 700                 r->y2 = height - tmp * SCALE_FACTOR;
 701         }
 702
 703
 704         return matches;
 705 }
 706
 707 static void
 708 djvu_document_find_iface_init (EvDocumentFindIface *iface)
 709 {
 710         iface->find_text = djvu_document_find_find_text;
 711 }
 712
 713 static GList *
 714 djvu_document_links_get_links (EvDocumentLinks *document_links,
 715                                gint             page)
 716 {
 717         return djvu_links_get_links (document_links, page, SCALE_FACTOR);
 718 }
 719
 720 static void
 721 djvu_document_document_links_iface_init  (EvDocumentLinksIface *iface)
 722 {
 723         iface->has_document_links = djvu_links_has_document_links;
 724         iface->get_links_model = djvu_links_get_links_model;
 725         iface->get_links = djvu_document_links_get_links;
 726         iface->find_link_dest = djvu_links_find_link_dest;
 727 }