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;
51 typedef struct _DjvuDocumentClass DjvuDocumentClass;
53 static void djvu_document_document_iface_init (EvDocumentIface *iface);
54 static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
56 G_DEFINE_TYPE_WITH_CODE
57 (DjvuDocument, djvu_document, G_TYPE_OBJECT,
59 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, djvu_document_document_iface_init);
60 G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init)
64 djvu_document_load (EvDocument *document,
68 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
69 ddjvu_document_t *doc;
72 /* FIXME: We could actually load uris */
73 filename = g_filename_from_uri (uri, NULL, error);
77 doc = ddjvu_document_create_by_filename (djvu_document->d_context, filename, TRUE);
79 if (!doc) return FALSE;
81 if (djvu_document->d_document)
82 ddjvu_document_release (djvu_document->d_document);
84 djvu_document->d_document = doc;
86 while (!ddjvu_document_decoding_done (djvu_document->d_document)) {
87 ddjvu_message_wait (djvu_document->d_context);
88 ddjvu_message_pop (djvu_document->d_context);
90 g_free (djvu_document->uri);
91 djvu_document->uri = g_strdup (uri);
98 djvu_document_save (EvDocument *document,
102 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
104 return ev_xfer_uri_simple (djvu_document->uri, uri, error);
108 djvu_document_get_n_pages (EvDocument *document)
110 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
112 g_return_val_if_fail (djvu_document->d_document, 0);
114 return ddjvu_document_get_pagenum (djvu_document->d_document);
118 djvu_document_get_page_size (EvDocument *document,
123 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
124 ddjvu_pageinfo_t info;
126 g_return_if_fail (djvu_document->d_document);
128 while (ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info) < DDJVU_JOB_OK) {
129 ddjvu_message_wait (djvu_document->d_context);
130 ddjvu_message_pop (djvu_document->d_context);
133 *width = info.width * SCALE_FACTOR;
134 *height = info.height * SCALE_FACTOR;
138 djvu_document_render_pixbuf (EvDocument *document,
141 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
143 GdkPixbuf *rotated_pixbuf;
147 ddjvu_page_t *d_page;
149 double page_width, page_height;
151 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
153 while (!ddjvu_page_decoding_done (d_page)) {
154 ddjvu_message_wait (djvu_document->d_context);
155 ddjvu_message_pop (djvu_document->d_context);
158 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR;
159 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR;
161 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, page_width, page_height);
163 prect.x = 0; prect.y = 0;
164 prect.w = page_width; prect.h = page_height;
167 ddjvu_page_render(d_page, DDJVU_RENDER_COLOR,
170 djvu_document->d_format,
171 gdk_pixbuf_get_rowstride (pixbuf),
172 (gchar *)gdk_pixbuf_get_pixels (pixbuf));
174 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rc->rotation);
175 g_object_unref (pixbuf);
177 return rotated_pixbuf;
181 djvu_document_finalize (GObject *object)
183 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
185 if (djvu_document->d_document)
186 ddjvu_document_release (djvu_document->d_document);
188 ddjvu_context_release (djvu_document->d_context);
189 ddjvu_format_release (djvu_document->d_format);
190 g_free (djvu_document->uri);
192 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
196 djvu_document_class_init (DjvuDocumentClass *klass)
198 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
200 gobject_class->finalize = djvu_document_finalize;
204 djvu_document_can_get_text (EvDocument *document)
209 static EvDocumentInfo *
210 djvu_document_get_info (EvDocument *document)
212 EvDocumentInfo *info;
214 info = g_new0 (EvDocumentInfo, 1);
220 djvu_document_document_iface_init (EvDocumentIface *iface)
222 iface->load = djvu_document_load;
223 iface->save = djvu_document_save;
224 iface->can_get_text = djvu_document_can_get_text;
225 iface->get_n_pages = djvu_document_get_n_pages;
226 iface->get_page_size = djvu_document_get_page_size;
227 iface->render_pixbuf = djvu_document_render_pixbuf;
228 iface->get_info = djvu_document_get_info;
232 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
234 gint suggested_width,
238 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
239 gdouble p_width, p_height;
242 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
244 page_ratio = p_height / p_width;
245 *width = suggested_width;
246 *height = (gint) (suggested_width * page_ratio);
252 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
258 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
259 GdkPixbuf *pixbuf, *rotated_pixbuf;
260 gint thumb_width, thumb_height;
264 g_return_val_if_fail (djvu_document->d_document, NULL);
266 djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
268 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
269 thumb_width, thumb_height);
270 gdk_pixbuf_fill (pixbuf, 0xffffffff);
271 pixels = gdk_pixbuf_get_pixels (pixbuf);
273 while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK) {
274 ddjvu_message_wait (djvu_document->d_context);
275 ddjvu_message_pop (djvu_document->d_context);
278 ddjvu_thumbnail_render (djvu_document->d_document, page,
279 &thumb_width, &thumb_height,
280 djvu_document->d_format,
281 gdk_pixbuf_get_rowstride (pixbuf),
284 rotated_pixbuf = gdk_pixbuf_rotate_simple (pixbuf, 360 - rotation);
285 g_object_unref (pixbuf);
288 GdkPixbuf *tmp_pixbuf = rotated_pixbuf;
289 rotated_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf);
290 g_object_unref (tmp_pixbuf);
293 return rotated_pixbuf;
297 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
299 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
300 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
304 djvu_document_init (DjvuDocument *djvu_document)
306 djvu_document->d_context = ddjvu_context_create ("Evince");
307 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
308 ddjvu_format_set_row_order (djvu_document->d_format,1);
310 djvu_document->d_document = NULL;