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;
48 EvOrientation orientation;
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);
96 djvu_document_save (EvDocument *document,
100 g_warning ("djvu_document_save not implemented"); /* FIXME */
105 djvu_document_get_n_pages (EvDocument *document)
107 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
109 g_return_val_if_fail (djvu_document->d_document, 0);
111 return ddjvu_document_get_pagenum (djvu_document->d_document);
115 djvu_document_get_orientation (EvDocument *document)
117 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
119 return djvu_document->orientation;
123 djvu_document_set_orientation (EvDocument *document,
124 EvOrientation orientation)
126 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
128 djvu_document->orientation = orientation;
132 djvu_document_get_page_size (EvDocument *document,
137 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
138 ddjvu_pageinfo_t info;
140 g_return_if_fail (djvu_document->d_document);
142 while (ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info) < DDJVU_JOB_OK) {
143 ddjvu_message_wait (djvu_document->d_context);
144 ddjvu_message_pop (djvu_document->d_context);
147 if (djvu_document->orientation == EV_ORIENTATION_PORTRAIT ||
148 djvu_document->orientation == EV_ORIENTATION_UPSIDEDOWN) {
149 *width = info.width * SCALE_FACTOR;
150 *height = info.height * SCALE_FACTOR;
152 *width = info.height * SCALE_FACTOR;
153 *height = info.width * SCALE_FACTOR;
158 rotate_pixbuf (EvDocument *document, GdkPixbuf *pixbuf)
160 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
162 switch (djvu_document->orientation)
164 case EV_ORIENTATION_LANDSCAPE:
165 return gdk_pixbuf_rotate_simple (pixbuf, 90);
166 case EV_ORIENTATION_UPSIDEDOWN:
167 return gdk_pixbuf_rotate_simple (pixbuf, 180);
168 case EV_ORIENTATION_SEASCAPE:
169 return gdk_pixbuf_rotate_simple (pixbuf, 270);
171 return g_object_ref (pixbuf);
176 djvu_document_render_pixbuf (EvDocument *document,
179 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
181 GdkPixbuf *rotated_pixbuf;
185 ddjvu_page_t *d_page;
187 double page_width, page_height;
189 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page);
191 while (!ddjvu_page_decoding_done (d_page)) {
192 ddjvu_message_wait (djvu_document->d_context);
193 ddjvu_message_pop (djvu_document->d_context);
196 page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR;
197 page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR;
199 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, page_width, page_height);
201 prect.x = 0; prect.y = 0;
202 prect.w = page_width; prect.h = page_height;
205 ddjvu_page_render(d_page, DDJVU_RENDER_COLOR,
208 djvu_document->d_format,
209 gdk_pixbuf_get_rowstride (pixbuf),
210 (gchar *)gdk_pixbuf_get_pixels (pixbuf));
213 rotated_pixbuf = rotate_pixbuf (document, pixbuf);
214 g_object_unref (pixbuf);
216 return rotated_pixbuf;
220 djvu_document_finalize (GObject *object)
222 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
224 if (djvu_document->d_document)
225 ddjvu_document_release (djvu_document->d_document);
227 ddjvu_context_release (djvu_document->d_context);
228 ddjvu_format_release (djvu_document->d_format);
230 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
234 djvu_document_class_init (DjvuDocumentClass *klass)
236 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
238 gobject_class->finalize = djvu_document_finalize;
242 djvu_document_can_get_text (EvDocument *document)
247 static EvDocumentInfo *
248 djvu_document_get_info (EvDocument *document)
250 EvDocumentInfo *info;
252 info = g_new0 (EvDocumentInfo, 1);
258 djvu_document_document_iface_init (EvDocumentIface *iface)
260 iface->load = djvu_document_load;
261 iface->save = djvu_document_save;
262 iface->can_get_text = djvu_document_can_get_text;
263 iface->get_n_pages = djvu_document_get_n_pages;
264 iface->get_page_size = djvu_document_get_page_size;
265 iface->render_pixbuf = djvu_document_render_pixbuf;
266 iface->get_info = djvu_document_get_info;
267 iface->set_orientation = djvu_document_set_orientation;
268 iface->get_orientation = djvu_document_get_orientation;
272 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
274 gint suggested_width,
278 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
279 gdouble p_width, p_height;
282 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
284 page_ratio = p_height / p_width;
285 *width = suggested_width;
286 *height = (gint) (suggested_width * page_ratio);
292 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
297 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
299 gint thumb_width, thumb_height;
303 g_return_val_if_fail (djvu_document->d_document, NULL);
305 djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
308 pixbuf = ev_document_misc_get_thumbnail_frame (thumb_width, thumb_height, NULL);
309 pixels = gdk_pixbuf_get_pixels (pixbuf) + gdk_pixbuf_get_rowstride (pixbuf) + 4;
311 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
312 thumb_width, thumb_height);
313 gdk_pixbuf_fill (pixbuf, 0xffffffff);
314 pixels = gdk_pixbuf_get_pixels (pixbuf);
317 while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK) {
318 ddjvu_message_wait (djvu_document->d_context);
319 ddjvu_message_pop (djvu_document->d_context);
322 ddjvu_thumbnail_render (djvu_document->d_document, page,
323 &thumb_width, &thumb_height,
324 djvu_document->d_format,
325 gdk_pixbuf_get_rowstride (pixbuf),
332 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
334 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
335 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
339 djvu_document_init (DjvuDocument *djvu_document)
341 djvu_document->d_context = ddjvu_context_create ("Evince");
342 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
343 ddjvu_format_set_row_order (djvu_document->d_format,1);
345 djvu_document->d_document = NULL;