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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 "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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