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 "ev-document-thumbnails.h"
22 #include "ev-document-misc.h"
24 #include <libdjvu/ddjvuapi.h>
26 #include <gdk-pixbuf/gdk-pixbuf-core.h>
28 #define SCALE_FACTOR 0.2
35 struct _DjvuDocumentClass
37 GObjectClass parent_class;
42 GObject parent_instance;
44 ddjvu_context_t *d_context;
45 ddjvu_document_t *d_document;
46 ddjvu_format_t *d_format;
49 typedef struct _DjvuDocumentClass DjvuDocumentClass;
51 static void djvu_document_document_iface_init (EvDocumentIface *iface);
52 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
54 G_DEFINE_TYPE_WITH_CODE
55 (DjvuDocument, djvu_document, G_TYPE_OBJECT,
57 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, djvu_document_document_iface_init);
58 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init)
62 djvu_document_load (EvDocument *document,
66 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
67 ddjvu_document_t *doc;
70 /* FIXME: We could actually load uris */
71 filename = g_filename_from_uri (uri, NULL, error);
75 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
77 if (!doc) return FALSE;
79 if (djvu_document->d_document)
80 ddjvu_document_release (djvu_document->d_document);
82 djvu_document->d_document = doc;
84 while (!ddjvu_document_decoding_done (djvu_document->d_document)) {
85 ddjvu_message_wait (djvu_document->d_context);
86 ddjvu_message_pop (djvu_document->d_context);
94 djvu_document_save (EvDocument *document,
98 g_warning ("djvu_document_save not implemented"); /* FIXME */
103 djvu_document_get_n_pages (EvDocument *document)
105 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
107 g_return_val_if_fail (djvu_document->d_document, 0);
109 return ddjvu_document_get_pagenum (djvu_document->d_document);
113 djvu_document_get_page_size (EvDocument *document,
118 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
119 ddjvu_pageinfo_t info;
121 g_return_if_fail (djvu_document->d_document);
123 while (ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info) < DDJVU_JOB_OK) {
124 ddjvu_message_wait (djvu_document->d_context);
125 ddjvu_message_pop (djvu_document->d_context);
128 *width = info.width * SCALE_FACTOR;
129 *height = info.height * SCALE_FACTOR;
133 djvu_document_render_pixbuf (EvDocument *document,
136 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
138 GdkPixbuf *rotated_pixbuf;
142 ddjvu_page_t *d_page;
144 double page_width, page_height;
146 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
148 while (!ddjvu_page_decoding_done (d_page)) {
149 ddjvu_message_wait (djvu_document->d_context);
150 ddjvu_message_pop (djvu_document->d_context);
153 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR;
154 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR;
156 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, page_width, page_height);
158 prect.x = 0; prect.y = 0;
159 prect.w = page_width; prect.h = page_height;
162 ddjvu_page_render(d_page, DDJVU_RENDER_COLOR,
165 djvu_document->d_format,
166 gdk_pixbuf_get_rowstride (pixbuf),
167 (gchar *)gdk_pixbuf_get_pixels (pixbuf));
169 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, rc->rotation);
170 g_object_unref (pixbuf);
172 return rotated_pixbuf;
176 djvu_document_finalize (GObject *object)
178 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
180 if (djvu_document->d_document)
181 ddjvu_document_release (djvu_document->d_document);
183 ddjvu_context_release (djvu_document->d_context);
184 ddjvu_format_release (djvu_document->d_format);
186 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
190 djvu_document_class_init (DjvuDocumentClass *klass)
192 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
194 gobject_class->finalize = djvu_document_finalize;
198 djvu_document_can_get_text (EvDocument *document)
203 static EvDocumentInfo *
204 djvu_document_get_info (EvDocument *document)
206 EvDocumentInfo *info;
208 info = g_new0 (EvDocumentInfo, 1);
214 djvu_document_document_iface_init (EvDocumentIface *iface)
216 iface->load = djvu_document_load;
217 iface->save = djvu_document_save;
218 iface->can_get_text = djvu_document_can_get_text;
219 iface->get_n_pages = djvu_document_get_n_pages;
220 iface->get_page_size = djvu_document_get_page_size;
221 iface->render_pixbuf = djvu_document_render_pixbuf;
222 iface->get_info = djvu_document_get_info;
226 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
228 gint suggested_width,
232 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
233 gdouble p_width, p_height;
236 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
238 page_ratio = p_height / p_width;
239 *width = suggested_width;
240 *height = (gint) (suggested_width * page_ratio);
246 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
252 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
253 GdkPixbuf *pixbuf, *rotated_pixbuf;
254 gint thumb_width, thumb_height;
258 g_return_val_if_fail (djvu_document->d_document, NULL);
260 djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
263 pixbuf = ev_document_misc_get_thumbnail_frame (thumb_width, thumb_height, NULL);
264 pixels = gdk_pixbuf_get_pixels (pixbuf) + gdk_pixbuf_get_rowstride (pixbuf) + 4;
266 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
267 thumb_width, thumb_height);
268 gdk_pixbuf_fill (pixbuf, 0xffffffff);
269 pixels = gdk_pixbuf_get_pixels (pixbuf);
272 while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK) {
273 ddjvu_message_wait (djvu_document->d_context);
274 ddjvu_message_pop (djvu_document->d_context);
277 ddjvu_thumbnail_render (djvu_document->d_document, page,
278 &thumb_width, &thumb_height,
279 djvu_document->d_format,
280 gdk_pixbuf_get_rowstride (pixbuf),
283 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, rotation);
284 g_object_unref (pixbuf);
286 return rotated_pixbuf;
290 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
292 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
293 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
297 djvu_document_init (DjvuDocument *djvu_document)
299 djvu_document->d_context = ddjvu_context_create ("Evince");
300 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
301 ddjvu_format_set_row_order (djvu_document->d_format,1);
303 djvu_document->d_document = NULL;