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);
92 djvu_document_save (EvDocument *document,
96 g_warning ("djvu_document_save not implemented"); /* FIXME */
101 djvu_document_get_n_pages (EvDocument *document)
103 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
105 g_return_val_if_fail (djvu_document->d_document, 0);
107 return ddjvu_document_get_pagenum (djvu_document->d_document);
111 djvu_document_get_page_size (EvDocument *document,
116 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
118 ddjvu_page_t *d_page;
120 g_return_if_fail (djvu_document->d_document);
122 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, page);
124 while (!ddjvu_page_decoding_done (d_page))
125 ddjvu_message_wait (djvu_document->d_context);
128 *width = ddjvu_page_get_width (d_page) * SCALE_FACTOR;
130 *height = ddjvu_page_get_height (d_page) * SCALE_FACTOR;
132 ddjvu_page_release (d_page);
136 djvu_document_render_pixbuf (EvDocument *document,
137 int page, gdouble scale)
139 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
144 ddjvu_page_t *d_page;
146 double page_width, page_height;
148 d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, page);
150 while (!ddjvu_page_decoding_done (d_page))
151 ddjvu_message_wait (djvu_document->d_context);
153 page_width = ddjvu_page_get_width (d_page) * scale * SCALE_FACTOR;
154 page_height = ddjvu_page_get_height (d_page) * 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 gdk_pixbuf_get_pixels (pixbuf));
174 djvu_document_finalize (GObject *object)
176 DjvuDocument *djvu_document = DJVU_DOCUMENT (object);
178 if (djvu_document->d_document)
179 ddjvu_document_release (djvu_document->d_document);
181 ddjvu_context_release (djvu_document->d_context);
182 ddjvu_format_release (djvu_document->d_format);
184 G_OBJECT_CLASS (djvu_document_parent_class)->finalize (object);
188 djvu_document_set_property (GObject *object,
202 djvu_document_get_property (GObject *object,
210 g_value_set_string (value, NULL);
216 djvu_document_class_init (DjvuDocumentClass *klass)
218 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
220 gobject_class->finalize = djvu_document_finalize;
221 gobject_class->get_property = djvu_document_get_property;
222 gobject_class->set_property = djvu_document_set_property;
224 g_object_class_override_property (gobject_class, PROP_TITLE, "title");
228 djvu_document_can_get_text (EvDocument *document)
234 djvu_document_document_iface_init (EvDocumentIface *iface)
236 iface->load = djvu_document_load;
237 iface->save = djvu_document_save;
238 iface->can_get_text = djvu_document_can_get_text;
239 iface->get_n_pages = djvu_document_get_n_pages;
240 iface->get_page_size = djvu_document_get_page_size;
241 iface->render_pixbuf = djvu_document_render_pixbuf;
245 djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
247 gint suggested_width,
251 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
252 gdouble p_width, p_height;
255 djvu_document_get_page_size (EV_DOCUMENT(djvu_document), page, &p_width, &p_height);
257 page_ratio = p_height / p_width;
258 *width = suggested_width;
259 *height = (gint) (suggested_width * page_ratio);
265 djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
270 DjvuDocument *djvu_document = DJVU_DOCUMENT (document);
272 gint thumb_width, thumb_height;
276 g_return_val_if_fail (djvu_document->d_document, NULL);
278 djvu_document_thumbnails_get_dimensions (document, page, width, &thumb_width, &thumb_height);
281 pixbuf = ev_document_misc_get_thumbnail_frame (thumb_width, thumb_height, NULL);
282 pixels = gdk_pixbuf_get_pixels (pixbuf) + gdk_pixbuf_get_rowstride (pixbuf) + 4;
284 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
285 thumb_width, thumb_height);
286 gdk_pixbuf_fill (pixbuf, 0xffffffff);
287 pixels = gdk_pixbuf_get_pixels (pixbuf);
290 while (ddjvu_thumbnail_status (djvu_document->d_document, page, 1) < DDJVU_JOB_OK)
291 ddjvu_message_wait (djvu_document->d_context);
293 ddjvu_thumbnail_render (djvu_document->d_document, page,
294 &thumb_width, &thumb_height,
295 djvu_document->d_format,
296 gdk_pixbuf_get_rowstride (pixbuf),
303 djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
305 iface->get_thumbnail = djvu_document_thumbnails_get_thumbnail;
306 iface->get_dimensions = djvu_document_thumbnails_get_dimensions;
310 djvu_document_init (DjvuDocument *djvu_document)
312 djvu_document->d_context = ddjvu_context_create ("Evince");
313 djvu_document->d_format = ddjvu_format_create (DDJVU_FORMAT_RGB24, 0, 0);
314 ddjvu_format_set_row_order (djvu_document->d_format,1);
316 djvu_document->d_document = NULL;