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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_TOUCH_TOUCH_HUD_PROJECTION_H_
#define ASH_TOUCH_TOUCH_HUD_PROJECTION_H_
#include <map>
#include "ash/touch/touch_observer_hud.h"
namespace ash {
namespace internal {
class TouchPointView;
// A heads-up display to show active touch points on the screen. As a derivative
// of TouchObserverHUD, objects of this class manage their own lifetime.
class TouchHudProjection : public TouchObserverHUD {
public:
explicit TouchHudProjection(aura::Window* initial_root);
// Overriden from TouchObserverHUD.
virtual void Clear() OVERRIDE;
private:
friend class TouchHudProjectionTest;
virtual ~TouchHudProjection();
// Overriden from TouchObserverHUD.
virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
virtual void SetHudForRootWindowController(
RootWindowController* controller) OVERRIDE;
virtual void UnsetHudForRootWindowController(
RootWindowController* controller) OVERRIDE;
std::map<int, TouchPointView*> points_;
DISALLOW_COPY_AND_ASSIGN(TouchHudProjection);
};
} // namespace internal
} // namespace ash
#endif // ASH_TOUCH_TOUCH_HUD_PROJECTION_H_
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