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// Copyright 2013 The Chromium Authors
// 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 "ash/touch/touch_observer_hud.h"
namespace ash {
class TouchHudRenderer;
// 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. Used
// for the --show-taps flag.
class TouchHudProjection : public TouchObserverHud {
public:
explicit TouchHudProjection(aura::Window* initial_root);
TouchHudProjection(const TouchHudProjection&) = delete;
TouchHudProjection& operator=(const TouchHudProjection&) = delete;
// TouchObserverHud:
void Clear() override;
private:
friend class TouchHudProjectionTest;
~TouchHudProjection() override;
// TouchObserverHud:
void OnTouchEvent(ui::TouchEvent* event) override;
void SetHudForRootWindowController(RootWindowController* controller) override;
void UnsetHudForRootWindowController(
RootWindowController* controller) override;
// TouchHudRenderer draws out the touch points.
std::unique_ptr<TouchHudRenderer> touch_hud_renderer_;
};
} // namespace ash
#endif // ASH_TOUCH_TOUCH_HUD_PROJECTION_H_
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