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, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 * Authors: Benjamin Otte <otte@gnome.org>
23 #include "gtkcssimageurlprivate.h"
25 #include "gtkcssprovider.h"
27 G_DEFINE_TYPE (GtkCssImageUrl, _gtk_css_image_url, GTK_TYPE_CSS_IMAGE)
30 gtk_css_image_url_get_width (GtkCssImage *image)
32 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
34 return cairo_image_surface_get_width (url->surface);
38 gtk_css_image_url_get_height (GtkCssImage *image)
40 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
42 return cairo_image_surface_get_height (url->surface);
46 gtk_css_image_url_draw (GtkCssImage *image,
51 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
53 cairo_rectangle (cr, 0, 0, width, height);
55 width / cairo_image_surface_get_width (url->surface),
56 height / cairo_image_surface_get_height (url->surface));
57 cairo_set_source_surface (cr, url->surface, 0, 0);
58 cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_PAD);
63 gtk_css_image_url_parse (GtkCssImage *image,
67 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
74 file = _gtk_css_parser_read_url (parser, base);
78 path = g_file_get_path (file);
79 g_object_unref (file);
81 pixbuf = gdk_pixbuf_new_from_file (path, &error);
85 _gtk_css_parser_take_error (parser, error);
89 url->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
90 gdk_pixbuf_get_width (pixbuf),
91 gdk_pixbuf_get_height (pixbuf));
92 cr = cairo_create (url->surface);
93 gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
96 g_object_unref (pixbuf);
101 static cairo_status_t
102 surface_write (void *closure,
103 const unsigned char *data,
106 g_byte_array_append (closure, data, length);
108 return CAIRO_STATUS_SUCCESS;
112 gtk_css_image_url_print (GtkCssImage *image,
115 #if CAIRO_HAS_PNG_FUNCTIONS
116 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (image);
120 array = g_byte_array_new ();
121 cairo_surface_write_to_png_stream (url->surface, surface_write, array);
122 base64 = g_base64_encode (array->data, array->len);
123 g_byte_array_free (array, TRUE);
125 g_string_append (string, "url(\"data:image/png;base64,");
126 g_string_append (string, base64);
127 g_string_append (string, "\")");
131 g_string_append (string, "none /* you need cairo png functions enabled to make this work */");
136 gtk_css_image_url_dispose (GObject *object)
138 GtkCssImageUrl *url = GTK_CSS_IMAGE_URL (object);
142 cairo_surface_destroy (url->surface);
146 G_OBJECT_CLASS (_gtk_css_image_url_parent_class)->dispose (object);
150 _gtk_css_image_url_class_init (GtkCssImageUrlClass *klass)
152 GtkCssImageClass *image_class = GTK_CSS_IMAGE_CLASS (klass);
153 GObjectClass *object_class = G_OBJECT_CLASS (klass);
155 image_class->get_width = gtk_css_image_url_get_width;
156 image_class->get_height = gtk_css_image_url_get_height;
157 image_class->draw = gtk_css_image_url_draw;
158 image_class->parse = gtk_css_image_url_parse;
159 image_class->print = gtk_css_image_url_print;
161 object_class->dispose = gtk_css_image_url_dispose;
165 _gtk_css_image_url_init (GtkCssImageUrl *image_url)