Add GtkGestureRotate

This gesture implementation recognizes rotations when fed with
events from two different GdkEventSequences

1 files changed, 70 insertions, 0 deletions

diff --git a/gtk/gtkgesturerotate.h b/gtk/gtkgesturerotate.h
new file mode 100644
index 0000000000..fc61470efc
--- /dev/null
+++ b/gtk/gtkgesturerotate.h
@@ -0,0 +1,70 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012, One Laptop Per Child.
+ * Copyright (C) 2014, 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 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/>.
+ *
+ * Author(s): Carlos Garnacho <carlosg@gnome.org>
+ */
+#ifndef __GTK_GESTURE_ROTATE_H__
+#define __GTK_GESTURE_ROTATE_H__
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtkwidget.h>
+#include <gtk/gtkgesture.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_GESTURE_ROTATE         (gtk_gesture_rotate_get_type ())
+#define GTK_GESTURE_ROTATE(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_GESTURE_ROTATE, GtkGestureRotate))
+#define GTK_GESTURE_ROTATE_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST ((k), GTK_TYPE_GESTURE_ROTATE, GtkGestureRotateClass))
+#define GTK_IS_GESTURE_ROTATE(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_GESTURE_ROTATE))
+#define GTK_IS_GESTURE_ROTATE_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GTK_TYPE_GESTURE_ROTATE))
+#define GTK_GESTURE_ROTATE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_GESTURE_ROTATE, GtkGestureRotateClass))
+
+typedef struct _GtkGestureRotate GtkGestureRotate;
+typedef struct _GtkGestureRotateClass GtkGestureRotateClass;
+
+struct _GtkGestureRotate
+{
+  GtkGesture parent_instance;
+};
+
+struct _GtkGestureRotateClass
+{
+  GtkGestureClass parent_class;
+
+  void (* angle_changed) (GtkGestureRotate *gesture,
+                          gdouble           angle,
+                          gdouble           delta);
+  /*< private >*/
+  gpointer padding[10];
+};
+
+GDK_AVAILABLE_IN_3_14
+GType        gtk_gesture_rotate_get_type        (void) G_GNUC_CONST;
+
+GDK_AVAILABLE_IN_3_14
+GtkGesture * gtk_gesture_rotate_new             (GtkWidget        *widget);
+
+GDK_AVAILABLE_IN_3_14
+gboolean     gtk_gesture_rotate_get_angle_delta (GtkGestureRotate *gesture,
+                                                 gdouble          *delta);
+
+G_END_DECLS
+
+#endif /* __GTK_GESTURE_ROTATE_H__ */