2 * Copyright © 2011 Red Hat Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
17 * Authors: Benjamin Otte <otte@gnome.org>
24 #include "gtkcssimageurlprivate.h"
25 #include "gtkcssimagesurfaceprivate.h"
27 G_DEFINE_TYPE (GtkCssImageUrl, _gtk_css_image_url, GTK_TYPE_CSS_IMAGE)
30 gtk_css_image_url_load_image (GtkCssImageUrl *url)
34 GFileInputStream *input;
36 if (url->loaded_image)
37 return url->loaded_image;
39 /* We special case resources here so we can use
40 gdk_pixbuf_new_from_resource, which in turn has some special casing
41 for GdkPixdata files to avoid duplicating the memory for the pixbufs */
42 if (g_file_has_uri_scheme (url->file, "resource"))
44 char *uri = g_file_get_uri (url->file);
45 char *resource_path = g_uri_unescape_string (uri + strlen ("resource://"), NULL);
47 pixbuf = gdk_pixbuf_new_from_resource (resource_path, &error);
48 g_free (resource_path);
53 input = g_file_read (url->file, NULL, &error);
56 pixbuf = gdk_pixbuf_new_from_stream (G_INPUT_STREAM (input), NULL, &error);
57 g_object_unref (input);
67 cairo_surface_t *empty = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 0, 0);
69 /* XXX: Can we get the error somehow sent to the CssProvider?
70 * I don't like just dumping it to stderr or losing it completely. */
71 g_warning ("Error loading image: %s", error->message);
73 url->loaded_image = _gtk_css_image_surface_new (empty);
74 cairo_surface_destroy (empty);
75 return url->loaded_image;
78 url->loaded_image = _gtk_css_image_surface_new_for_pixbuf (pixbuf);
79 g_object_unref (pixbuf);
81 return url->loaded_image;
85 gtk_css_image_url_get_width (GtkCssImage *image)
87 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
89 return _gtk_css_image_get_width (gtk_css_image_url_load_image (url));
93 gtk_css_image_url_get_height (GtkCssImage *image)
95 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
97 return _gtk_css_image_get_height (gtk_css_image_url_load_image (url));
101 gtk_css_image_url_get_aspect_ratio (GtkCssImage *image)
103 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
105 return _gtk_css_image_get_aspect_ratio (gtk_css_image_url_load_image (url));
109 gtk_css_image_url_draw (GtkCssImage *image,
114 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
116 _gtk_css_image_draw (gtk_css_image_url_load_image (url), cr, width, height);
120 gtk_css_image_url_compute (GtkCssImage *image,
122 GtkStyleProviderPrivate *provider,
123 GtkCssComputedValues *values,
124 GtkCssComputedValues *parent_values,
125 GtkCssDependencies *dependencies)
127 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
129 return g_object_ref (gtk_css_image_url_load_image (url));
133 gtk_css_image_url_parse (GtkCssImage *image,
134 GtkCssParser *parser)
136 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
138 url->file = _gtk_css_parser_read_url (parser);
139 if (url->file == NULL)
146 gtk_css_image_url_print (GtkCssImage *image,
149 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
151 _gtk_css_image_print (gtk_css_image_url_load_image (url), string);
155 gtk_css_image_url_dispose (GObject *object)
157 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (object);
159 g_clear_object (&url->file);
160 g_clear_object (&url->loaded_image);
162 G_OBJECT_CLASS (_gtk_css_image_url_parent_class)->dispose (object);
166 _gtk_css_image_url_class_init (GtkCssImageUrlClass *klass)
168 GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
169 GObjectClass *object_class = G_OBJECT_CLASS (klass);
171 image_class->get_width = gtk_css_image_url_get_width;
172 image_class->get_height = gtk_css_image_url_get_height;
173 image_class->get_aspect_ratio = gtk_css_image_url_get_aspect_ratio;
174 image_class->compute = gtk_css_image_url_compute;
175 image_class->draw = gtk_css_image_url_draw;
176 image_class->parse = gtk_css_image_url_parse;
177 image_class->print = gtk_css_image_url_print;
179 object_class->dispose = gtk_css_image_url_dispose;
183 _gtk_css_image_url_init (GtkCssImageUrl *image_url)