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>
32 #include <gdk-pixbuf/gdk-pixbuf-core.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;
73 msg = ddjvu_message_wait (ctx);
74 while ((msg = ddjvu_message_peek (ctx))) {
75 switch (msg->m_any.tag) {
77 g_warning ("DjvuLibre error: %s",
78 msg->m_error.message);
79 if (msg->m_error.filename)
80 g_warning ("DjvuLibre error: %s:%d",
81 msg->m_error.filename,
86 ddjvu_message_pop (ctx);
91 djvu_document_load (EvDocument *document,
95 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
96 ddjvu_document_t *doc;
99 /* FIXME: We could actually load uris */
100 filename = g_filename_from_uri (uri, NULL, error);
104 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
106 if (!doc) return FALSE;
108 if (djvu_document->d_document)
109 ddjvu_document_release (djvu_document->d_document);
111 djvu_document->d_document = doc;
113 while (!ddjvu_document_decoding_done (djvu_document->d_document))
114 djvu_handle_events(djvu_document, TRUE);
115 g_free (djvu_document->uri);
116 djvu_document->uri = g_strdup (uri);
123 djvu_document_save (EvDocument *document,
127 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
129 return ev_xfer_uri_simple (djvu_document->uri, uri, error);
133 djvu_document_get_n_pages (EvDocument *document)
135 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
137 g_return_val_if_fail (djvu_document->d_document, 0);
139 return ddjvu_document_get_pagenum (djvu_document->d_document);
143 djvu_document_get_page_size (EvDocument *document,
148 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
149 ddjvu_pageinfo_t info;
151 g_return_if_fail (djvu_document->d_document);
153 while (ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info) < DDJVU_JOB_OK)
154 djvu_handle_events(djvu_document, TRUE);
156 *width = info.width * SCALE_FACTOR;
157 *height = info.height * SCALE_FACTOR;
161 djvu_document_render_pixbuf (EvDocument *document,
164 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
166 GdkPixbuf *rotated_pixbuf;
170 ddjvu_page_t *d_page;
172 double page_width, page_height;
174 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
176 while (!ddjvu_page_decoding_done (d_page))
177 djvu_handle_events(djvu_document, TRUE);
179 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR;
180 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR;
182 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, page_width, page_height);
184 prect.x = 0; prect.y = 0;
185 prect.w = page_width; prect.h = page_height;
188 ddjvu_page_render(d_page, DDJVU_RENDER_COLOR,
191 djvu_document->d_format,
192 gdk_pixbuf_get_rowstride (pixbuf),
193 (gchar *)gdk_pixbuf_get_pixels (pixbuf));
195 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
196 g_object_unref (pixbuf);
198 return rotated_pixbuf;
202 djvu_document_finalize (GObject *object)
204 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
206 if (djvu_document->d_document)
207 ddjvu_document_release (djvu_document->d_document);
209 ddjvu_context_release (djvu_document->d_context);
210 ddjvu_format_release (djvu_document->d_format);
211 g_free (djvu_document->uri);
213 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
217 djvu_document_class_init (DjvuDocumentClass *klass)
219 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
221 gobject_class->finalize = djvu_document_finalize;
225 djvu_document_can_get_text (EvDocument *document)
232 djvu_document_get_text (EvDocument *document, int page, EvRectangle *rect)
234 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
235 double width, height;
236 EvRectangle rectangle;
239 djvu_document_get_page_size (document, page, &width, &height);
240 rectangle.x1 = rect->x1 / SCALE_FACTOR;
241 rectangle.y1 = (height - rect->y2) / SCALE_FACTOR;
242 rectangle.x2 = rect->x2 / SCALE_FACTOR;
243 rectangle.y2 = (height - rect->y1) / SCALE_FACTOR;
245 text = djvu_text_copy (djvu_document, page, &rectangle);
248 text = g_strdup ("");
253 static EvDocumentInfo *
254 djvu_document_get_info (EvDocument *document)
256 EvDocumentInfo *info;
258 info = g_new0 (EvDocumentInfo, 1);
264 djvu_document_document_iface_init (EvDocumentIface *iface)
266 iface->load = djvu_document_load;
267 iface->save = djvu_document_save;
268 iface->can_get_text = djvu_document_can_get_text;
269 iface->get_text = djvu_document_get_text;
270 iface->get_n_pages = djvu_document_get_n_pages;
271 iface->get_page_size = djvu_document_get_page_size;
272 iface->render_pixbuf = djvu_document_render_pixbuf;
273 iface->get_info = djvu_document_get_info;
277 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
279 gint suggested_width,
283 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
284 gdouble p_width, p_height;
287 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
289 page_ratio = p_height / p_width;
290 *width = suggested_width;
291 *height = (gint) (suggested_width * page_ratio);
297 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
303 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
304 GdkPixbuf *pixbuf, *rotated_pixbuf;
305 gint thumb_width, thumb_height;
309 g_return_val_if_fail (djvu_document->d_document, NULL);
311 djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
313 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
314 thumb_width, thumb_height);
315 gdk_pixbuf_fill (pixbuf, 0xffffffff);
316 pixels = gdk_pixbuf_get_pixels (pixbuf);
318 while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK)
319 djvu_handle_events(djvu_document, TRUE);
321 ddjvu_thumbnail_render (djvu_document->d_document, page,
322 &thumb_width, &thumb_height,
323 djvu_document->d_format,
324 gdk_pixbuf_get_rowstride (pixbuf),
327 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rotation);
328 g_object_unref (pixbuf);
331 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
332 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf);
333 g_object_unref (tmp_pixbuf);
336 return rotated_pixbuf;
340 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
342 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
343 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
347 djvu_document_init (DjvuDocument *djvu_document)
349 djvu_document->d_context = ddjvu_context_create ("Evince");
350 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
351 ddjvu_format_set_row_order (djvu_document->d_format,1);
353 djvu_document->d_document = NULL;
357 djvu_document_find_begin (EvDocumentFind *document,
359 const char *search_string,
360 gboolean case_sensitive)
362 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
364 if (djvu_document->search &&
365 strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0)
368 if (djvu_document->search)
369 djvu_text_free (djvu_document->search);
371 djvu_document->search = djvu_text_new (djvu_document,
378 djvu_document_find_get_n_results (EvDocumentFind *document_find, int page)
380 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
383 return djvu_text_n_results (search, page);
390 djvu_document_find_get_result (EvDocumentFind *document_find,
393 EvRectangle *rectangle)
395 DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find);
396 DjvuText *search = djvu_document->search;
398 double width, height;
403 r = djvu_text_get_result (search, page, n_result);
407 djvu_document_get_page_size (EV_DOCUMENT (djvu_document),
408 page, &width, &height);
409 rectangle->x1 = r->x1 * SCALE_FACTOR;
410 rectangle->y1 = height - r->y2 * SCALE_FACTOR;
411 rectangle->x2 = r->x2 * SCALE_FACTOR;
412 rectangle->y2 = height - r->y1 * SCALE_FACTOR;
418 djvu_document_find_page_has_results (EvDocumentFind *document_find,
421 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
423 return search && djvu_text_has_results (search, page);
427 djvu_document_find_get_progress (EvDocumentFind *document_find)
429 DjvuText *search = DJVU_DOCUMENT (document_find)->search;
431 if (search == NULL) {
435 return djvu_text_get_progress (search);
439 djvu_document_find_cancel (EvDocumentFind *document)
441 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
443 if (djvu_document->search) {
444 djvu_text_free (djvu_document->search);
445 djvu_document->search = NULL;
450 djvu_document_find_iface_init (EvDocumentFindIface *iface)
452 iface->begin = djvu_document_find_begin;
453 iface->get_n_results = djvu_document_find_get_n_results;
454 iface->get_result = djvu_document_find_get_result;
455 iface->page_has_results = djvu_document_find_page_has_results;
456 iface->get_progress = djvu_document_find_get_progress;
457 iface->cancel = djvu_document_find_cancel;
461 djvu_document_links_get_links (EvDocumentLinks *document_links,
464 return djvu_links_get_links (document_links, page, SCALE_FACTOR);
468 djvu_document_document_links_iface_init (EvDocumentLinksIface *iface)
470 iface->has_document_links = djvu_links_has_document_links;
471 iface->get_links_model = djvu_links_get_links_model;
472 iface->get_links = djvu_document_links_get_links;
473 iface->find_link_dest = djvu_links_find_link_dest;