/* Copyright (C) 2014 The gtkmm Development Team
 *
 * 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/>.
 */

#include <gtkmm/gesture.h>

_DEFS(gtkmm,gtk)
_PINCLUDE(gtkmm/private/gesture_p.h)

namespace Gtk
{
/** Rotate gesture.
 *
 * This is a Gesture implementation able to recognize
 * 2-finger rotations. Whenever the angle between both handled sequences
 * changes, signal_angle_changed() is emitted.
 *
 * @newin{3,14}
 *
 * @ingroup Gestures
 */
class GTKMM_API GestureRotate : public Gesture
{
  _CLASS_GOBJECT(GestureRotate, GtkGestureRotate, GTK_GESTURE_ROTATE, Gesture, GtkGesture, , , GTKMM_API)

protected:
  /** There is no create() method that corresponds to this constructor,
   * because this constructor shall only be used by derived classes.
   */
  _CTOR_DEFAULT

  /** Constructs a Gesture that recognizes 2-touch rotation gestures.
   */
  _WRAP_CTOR(GestureRotate(Widget& widget), gtk_gesture_rotate_new)

public:
  /** Creates a Gesture that recognizes 2-touch rotation gestures.
   *
   * @newin{3,14}
   *
   * @param widget Widget the gesture relates to.
   * @return A RefPtr to a new GestureRotate.
   */
  _WRAP_CREATE(Widget& widget)

  _WRAP_METHOD(double get_angle_delta() const, gtk_gesture_rotate_get_angle_delta)

  // no_default_handler because GtkGestureRotateClass is private.
  _WRAP_SIGNAL(void angle_changed(double angle, double angle_delta), "angle-changed", no_default_handler)

  // GestureRotate has no properties
};

} // namespace Gtk
