css: Add animation support

This adds the GtkCssAnimation class and the code needed to hook it into
GtkStyleContext. It takes the values out of the CSS "animation"
properties and does animations. See
  http://dev.w3.org/csswg/css3-animations/
for details.

Note that the code for starting and stopping animations with widget
visibility doesn't work yet.

1 files changed, 75 insertions, 0 deletions

diff --git a/gtk/gtkcssanimationprivate.h b/gtk/gtkcssanimationprivate.h
new file mode 100644
index 0000000000..f992605c39
--- /dev/null
+++ b/gtk/gtkcssanimationprivate.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright © 2012 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: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GTK_CSS_ANIMATION_PRIVATE_H__
+#define __GTK_CSS_ANIMATION_PRIVATE_H__
+
+#include "gtkstyleanimationprivate.h"
+
+#include "gtkcsskeyframesprivate.h"
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_CSS_ANIMATION           (_gtk_css_animation_get_type ())
+#define GTK_CSS_ANIMATION(obj)           (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_ANIMATION, GtkCssAnimation))
+#define GTK_CSS_ANIMATION_CLASS(cls)     (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_ANIMATION, GtkCssAnimationClass))
+#define GTK_IS_CSS_ANIMATION(obj)        (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_ANIMATION))
+#define GTK_IS_CSS_ANIMATION_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_ANIMATION))
+#define GTK_CSS_ANIMATION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_ANIMATION, GtkCssAnimationClass))
+
+typedef struct _GtkCssAnimation           GtkCssAnimation;
+typedef struct _GtkCssAnimationClass      GtkCssAnimationClass;
+
+struct _GtkCssAnimation
+{
+  GtkStyleAnimation parent;
+
+  char            *name;
+  GtkCssKeyframes *keyframes;
+  GtkCssValue     *ease;
+  gint64           timestamp;           /* elapsed time when paused, start time when playing (can be negative) */
+  gint64           duration;            /* duration of 1 cycle */
+  GtkCssDirection  direction;
+  GtkCssPlayState  play_state;
+  GtkCssFillMode   fill_mode;
+  double           iteration_count;
+};
+
+struct _GtkCssAnimationClass
+{
+  GtkStyleAnimationClass parent_class;
+};
+
+GType                   _gtk_css_animation_get_type        (void) G_GNUC_CONST;
+
+GtkStyleAnimation *     _gtk_css_animation_new             (const char         *name,
+                                                            GtkCssKeyframes    *keyframes,
+                                                            gint64              start_time_us,
+                                                            gint64              duration_us,
+                                                            GtkCssValue        *ease,
+                                                            GtkCssDirection     direction,
+                                                            GtkCssPlayState     play_state,
+                                                            GtkCssFillMode      fill_mode,
+                                                            double              iteration_count);
+
+const char *            _gtk_css_animation_get_name        (GtkCssAnimation   *animation);
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_ANIMATION_PRIVATE_H__ */