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 "gtkcssimageprivate.h"
25 /* for the types only */
26 #include "gtk/gtkcssimagegradientprivate.h"
27 #include "gtk/gtkcssimageurlprivate.h"
29 G_DEFINE_ABSTRACT_TYPE (GtkCssImage, _gtk_css_image, G_TYPE_OBJECT)
32 gtk_css_image_real_get_width (GtkCssImage *image)
38 gtk_css_image_real_get_height (GtkCssImage *image)
44 gtk_css_image_real_get_aspect_ratio (GtkCssImage *image)
48 width = _gtk_css_image_get_width (image);
49 height = _gtk_css_image_get_height (image);
52 return (double) width / height;
58 gtk_css_image_real_compute (GtkCssImage *image,
59 GtkStyleContext *context)
61 return g_object_ref (image);
65 _gtk_css_image_class_init (GtkCssImageClass *klass)
67 klass->get_width = gtk_css_image_real_get_width;
68 klass->get_height = gtk_css_image_real_get_height;
69 klass->get_aspect_ratio = gtk_css_image_real_get_aspect_ratio;
70 klass->compute = gtk_css_image_real_compute;
74 _gtk_css_image_init (GtkCssImage *image)
79 _gtk_css_image_get_width (GtkCssImage *image)
81 GtkCssImageClass *klass;
83 g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0);
85 klass = GTK_CSS_IMAGE_GET_CLASS (image);
87 return klass->get_width (image);
91 _gtk_css_image_get_height (GtkCssImage *image)
93 GtkCssImageClass *klass;
95 g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0);
97 klass = GTK_CSS_IMAGE_GET_CLASS (image);
99 return klass->get_height (image);
103 _gtk_css_image_get_aspect_ratio (GtkCssImage *image)
105 GtkCssImageClass *klass;
107 g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), 0);
109 klass = GTK_CSS_IMAGE_GET_CLASS (image);
111 return klass->get_aspect_ratio (image);
115 _gtk_css_image_compute (GtkCssImage *image,
116 GtkStyleContext *context)
118 GtkCssImageClass *klass;
120 g_return_val_if_fail (GTK_IS_CSS_IMAGE (image), NULL);
121 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
123 klass = GTK_CSS_IMAGE_GET_CLASS (image);
125 return klass->compute (image, context);
129 _gtk_css_image_draw (GtkCssImage *image,
134 GtkCssImageClass *klass;
136 g_return_if_fail (GTK_IS_CSS_IMAGE (image));
137 g_return_if_fail (cr != NULL);
141 klass = GTK_CSS_IMAGE_GET_CLASS (image);
143 klass->draw (image, cr, width, height);
149 _gtk_css_image_print (GtkCssImage *image,
152 GtkCssImageClass *klass;
154 g_return_if_fail (GTK_IS_CSS_IMAGE (image));
155 g_return_if_fail (string != NULL);
157 klass = GTK_CSS_IMAGE_GET_CLASS (image);
159 klass->print (image, string);
163 _gtk_css_image_new_parse (GtkCssParser *parser,
166 static const struct {
168 GType (* type_func) (void);
170 { "url", _gtk_css_image_url_get_type },
171 { "-gtk-gradient", _gtk_css_image_gradient_get_type }
175 g_return_val_if_fail (parser != NULL, NULL);
176 g_return_val_if_fail (G_IS_FILE (base), NULL);
178 for (i = 0; i < G_N_ELEMENTS (image_types); i++)
180 if (_gtk_css_parser_has_prefix (parser, image_types[i].prefix))
183 GtkCssImageClass *klass;
185 image = g_object_new (image_types[i].type_func (), NULL);
187 klass = GTK_CSS_IMAGE_GET_CLASS (image);
188 if (!klass->parse (image, parser, base))
190 g_object_unref (image);
198 _gtk_css_parser_error (parser, "Not a valid image");