Implement CSS radial gradients

Implement parsing and drawing of radial gradients according to
http://www.w3.org/TR/css3-images/#radial-gradients.

Transitions are not implemented yet.

1 files changed, 73 insertions, 0 deletions

diff --git a/gtk/gtkcssimageradialprivate.h b/gtk/gtkcssimageradialprivate.h
new file mode 100644
index 0000000000..07d5e1f3f1
--- /dev/null
+++ b/gtk/gtkcssimageradialprivate.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright © 2015 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Matthias Clasen <mclasen@redhat.com>
+ */
+
+#ifndef __GTK_CSS_IMAGE_RADIAL_PRIVATE_H__
+#define __GTK_CSS_IMAGE_RADIAL_PRIVATE_H__
+
+#include "gtk/gtkcssimageprivate.h"
+#include "gtk/gtkcssvalueprivate.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_CSS_IMAGE_RADIAL           (_gtk_css_image_radial_get_type ())
+#define GTK_CSS_IMAGE_RADIAL(obj)           (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_IMAGE_RADIAL, GtkCssImageRadial))
+#define GTK_CSS_IMAGE_RADIAL_CLASS(cls)     (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_IMAGE_RADIAL, GtkCssImageRadialClass))
+#define GTK_IS_CSS_IMAGE_RADIAL(obj)        (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_IMAGE_RADIAL))
+#define GTK_IS_CSS_IMAGE_RADIAL_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_IMAGE_RADIAL))
+#define GTK_CSS_IMAGE_RADIAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_IMAGE_RADIAL, GtkCssImageRadialClass))
+
+typedef struct _GtkCssImageRadial           GtkCssImageRadial;
+typedef struct _GtkCssImageRadialClass      GtkCssImageRadialClass;
+typedef struct _GtkCssImageRadialColorStop  GtkCssImageRadialColorStop;
+
+struct _GtkCssImageRadialColorStop {
+  GtkCssValue        *offset;
+  GtkCssValue        *color;
+};
+
+typedef enum {
+  GTK_CSS_EXPLICIT_SIZE,
+  GTK_CSS_CLOSEST_SIDE,
+  GTK_CSS_FARTHEST_SIDE,
+  GTK_CSS_CLOSEST_CORNER,
+  GTK_CSS_FARTHEST_CORNER
+} GtkCssRadialSize;
+
+struct _GtkCssImageRadial
+{
+  GtkCssImage parent;
+
+  GtkCssValue *position;
+  GtkCssValue *sizes[2];
+  GArray *stops;
+  GtkCssRadialSize size;
+  guint circle : 1;
+  guint repeating :1;
+};
+
+struct _GtkCssImageRadialClass
+{
+  GtkCssImageClass parent_class;
+};
+
+GType          _gtk_css_image_radial_get_type             (void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_IMAGE_RADIAL_PRIVATE_H__ */