1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
3 * Copyright (C) 2005, Nickolay V. Shmyrev <nshmyrev@yandex.ru>
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)
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.
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.
20 #include "djvu-document.h"
21 #include "djvu-text.h"
22 #include "djvu-links.h"
23 #include "djvu-document-private.h"
24 #include "ev-document-thumbnails.h"
25 #include "ev-document-misc.h"
26 #include "ev-document-find.h"
27 #include "ev-document-links.h"
29 #include <libdjvu/ddjvuapi.h>
30 #include <libdjvu/miniexp.h>
31 #include <gdk-pixbuf/gdk-pixbuf-core.h>
32 #include <glib/gi18n.h>
33 #include <glib/gunicode.h>
36 #define SCALE_FACTOR 0.2
43 struct _DjvuDocumentClass
45 GObjectClass parent_class;
48 typedef struct _DjvuDocumentClass DjvuDocumentClass;
50 static void djvu_document_document_iface_init (EvDocumentIface *iface);
51 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
52 static void djvu_document_find_iface_init (EvDocumentFindIface *iface);
53 static void djvu_document_document_links_iface_init (EvDocumentLinksIface *iface);
55 G_DEFINE_TYPE_WITH_CODE
56 (DjvuDocument, djvu_document, G_TYPE_OBJECT,
58 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, djvu_document_document_iface_init);
59 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init)
60 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init);
61 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init);
66 djvu_handle_events (DjvuDocument *djvu_document, int wait)
68 ddjvu_context_t *ctx = djvu_document->d_context;
69 const ddjvu_message_t *msg;
75 msg = ddjvu_message_wait (ctx);
77 while ((msg = ddjvu_message_peek (ctx))) {
78 switch (msg->m_any.tag) {
80 g_warning ("DjvuLibre error: %s",
81 msg->m_error.message);
82 if (msg->m_error.filename)
83 g_warning ("DjvuLibre error: %s:%d",
84 msg->m_error.filename,
90 ddjvu_message_pop (ctx);
95 djvu_document_load (EvDocument *document,
99 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
100 ddjvu_document_t *doc;
102 gboolean missing_files = FALSE;
104 /* FIXME: We could actually load uris */
105 filename = g_filename_from_uri (uri, NULL, error);
109 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
116 if (djvu_document->d_document)
117 ddjvu_document_release (djvu_document->d_document);
119 djvu_document->d_document = doc;
121 while (!ddjvu_document_decoding_done (djvu_document->d_document))
122 djvu_handle_events (djvu_document, TRUE);
123 g_free (djvu_document->uri);
124 djvu_document->uri = g_strdup (uri);
126 if (ddjvu_document_get_type (djvu_document->d_document) == DDJVU_DOCTYPE_INDIRECT) {
131 base = g_path_get_dirname (filename);
133 n_files = ddjvu_document_get_filenum (djvu_document->d_document);
134 for (i = 0; i < n_files; i++) {
135 struct ddjvu_fileinfo_s fileinfo;
138 ddjvu_document_get_fileinfo (djvu_document->d_document,
141 if (fileinfo.type != 'P')
144 file = g_build_filename (base, fileinfo.id, NULL);
145 if (!g_file_test (file, G_FILE_TEST_EXISTS)) {
146 missing_files = TRUE;
161 _("The document is composed by several files. "
162 "One or more of such files cannot be accessed."));
172 djvu_document_save (EvDocument *document,
176 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
178 return ev_xfer_uri_simple (djvu_document->uri, uri, error);
182 djvu_document_get_n_pages (EvDocument *document)
184 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
186 g_return_val_if_fail (djvu_document->d_document, 0);
188 return ddjvu_document_get_pagenum (djvu_document->d_document);
192 djvu_document_get_page_size (EvDocument *document,
197 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
198 ddjvu_pageinfo_t info;
201 g_return_if_fail (djvu_document->d_document);
203 while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK)
204 djvu_handle_events(djvu_document, TRUE);
206 if (r >= DDJVU_JOB_FAILED)
207 djvu_handle_events(djvu_document, TRUE);
209 *width = info.width * SCALE_FACTOR;
210 *height = info.height * SCALE_FACTOR;
214 djvu_document_render_pixbuf (EvDocument *document,
217 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
219 GdkPixbuf *rotated_pixbuf;
223 ddjvu_page_t *d_page;
225 double page_width, page_height;
227 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
229 while (!ddjvu_page_decoding_done (d_page))
230 djvu_handle_events(djvu_document, TRUE);
232 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR;
233 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR;
235 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, page_width, page_height);
237 prect.x = 0; prect.y = 0;
238 prect.w = page_width; prect.h = page_height;
241 ddjvu_page_render(d_page, DDJVU_RENDER_COLOR,
244 djvu_document->d_format,
245 gdk_pixbuf_get_rowstride (pixbuf),
246 (gchar *)gdk_pixbuf_get_pixels (pixbuf));
248 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
249 g_object_unref (pixbuf);
251 return rotated_pixbuf;
255 djvu_document_finalize (GObject *object)
257 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
259 if (djvu_document->d_document)
260 ddjvu_document_release (djvu_document->d_document);
262 ddjvu_context_release (djvu_document->d_context);
263 ddjvu_format_release (djvu_document->d_format);
264 g_free (djvu_document->uri);
266 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
270 djvu_document_class_init (DjvuDocumentClass *klass)
272 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
274 gobject_class->finalize = djvu_document_finalize;
278 djvu_document_can_get_text (EvDocument *document)
285 djvu_document_get_text (EvDocument *document, int page, EvRectangle *rect)
287 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
288 double width, height;
289 EvRectangle rectangle;
292 djvu_document_get_page_size (document, page, &width, &height);
293 rectangle.x1 = rect->x1 / SCALE_FACTOR;
294 rectangle.y1 = (height - rect->y2) / SCALE_FACTOR;
295 rectangle.x2 = rect->x2 / SCALE_FACTOR;
296 rectangle.y2 = (height - rect->y1) / SCALE_FACTOR;
298 text = djvu_text_copy (djvu_document, page, &rectangle);
301 text = g_strdup ("");
306 static EvDocumentInfo *
307 djvu_document_get_info (EvDocument *document)
309 EvDocumentInfo *info;
311 info = g_new0 (EvDocumentInfo, 1);
317 djvu_document_document_iface_init (EvDocumentIface *iface)
319 iface->load = djvu_document_load;
320 iface->save = djvu_document_save;
321 iface->can_get_text = djvu_document_can_get_text;
322 iface->get_text = djvu_document_get_text;
323 iface->get_n_pages = djvu_document_get_n_pages;
324 iface->get_page_size = djvu_document_get_page_size;
325 iface->render_pixbuf = djvu_document_render_pixbuf;
326 iface->get_info = djvu_document_get_info;
330 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
332 gint suggested_width,
336 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
337 gdouble p_width, p_height;
340 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
342 page_ratio = p_height / p_width;
343 *width = suggested_width;
344 *height = (gint) (suggested_width * page_ratio);
350 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
356 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
357 GdkPixbuf *pixbuf, *rotated_pixbuf;
358 gint thumb_width, thumb_height;
362 g_return_val_if_fail (djvu_document->d_document, NULL);
364 djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
366 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
367 thumb_width, thumb_height);
368 gdk_pixbuf_fill (pixbuf, 0xffffffff);
369 pixels = gdk_pixbuf_get_pixels (pixbuf);
371 while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK)
372 djvu_handle_events(djvu_document, TRUE);
374 ddjvu_thumbnail_render (djvu_document->d_document, page,
375 &thumb_width, &thumb_height,
376 djvu_document->d_format,
377 gdk_pixbuf_get_rowstride (pixbuf),
380 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rotation);
381 g_object_unref (pixbuf);
384 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
385 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf);
386 g_object_unref (tmp_pixbuf);
389 return rotated_pixbuf;
393 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
395 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
396 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
400 djvu_document_init (DjvuDocument *djvu_document)
402 djvu_document->d_context = ddjvu_context_create ("Evince");
403 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
404 ddjvu_format_set_row_order (djvu_document->d_format,1);
406 djvu_document->d_document = NULL;
410 djvu_document_find_begin (EvDocumentFind *document,
412 const char *search_string,
413 gboolean case_sensitive)
415 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
417 if (djvu_document->search &&
418 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
421 if (djvu_document->search)
422 djvu_text_free (djvu_document->search);
424 djvu_document->search = djvu_text_new (djvu_document,
431 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
433 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
436 return djvu_text_n_results (search, page);
443 djvu_document_find_get_result (EvDocumentFind *document_find,
446 EvRectangle *rectangle)
448 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
449 DjvuText *search = djvu_document->search;
451 double width, height;
456 r = djvu_text_get_result (search, page, n_result);
460 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
461 page, &width, &height);
462 rectangle->x1 = r->x1 * SCALE_FACTOR;
463 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
464 rectangle->x2 = r->x2 * SCALE_FACTOR;
465 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
471 djvu_document_find_page_has_results (EvDocumentFind *document_find,
474 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
476 return search && djvu_text_has_results (search, page);
480 djvu_document_find_get_progress (EvDocumentFind *document_find)
482 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
484 if (search == NULL) {
488 return djvu_text_get_progress (search);
492 djvu_document_find_cancel (EvDocumentFind *document)
494 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
496 if (djvu_document->search) {
497 djvu_text_free (djvu_document->search);
498 djvu_document->search = NULL;
503 djvu_document_find_iface_init (EvDocumentFindIface *iface)
505 iface->begin = djvu_document_find_begin;
506 iface->get_n_results = djvu_document_find_get_n_results;
507 iface->get_result = djvu_document_find_get_result;
508 iface->page_has_results = djvu_document_find_page_has_results;
509 iface->get_progress = djvu_document_find_get_progress;
510 iface->cancel = djvu_document_find_cancel;
514 djvu_document_links_get_links (EvDocumentLinks *document_links,
517 return djvu_links_get_links (document_links, page, SCALE_FACTOR);
521 djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
523 iface->has_document_links = djvu_links_has_document_links;
524 iface->get_links_model = djvu_links_get_links_model;
525 iface->get_links = djvu_document_links_get_links;
526 iface->find_link_dest = djvu_links_find_link_dest;