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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_DEBUG_H_
- #define ASH_TOUCH_TOUCH_HUD_DEBUG_H_
- #include <stdint.h>
- #include <map>
- #include <memory>
- #include "ash/ash_export.h"
- #include "ash/touch/touch_observer_hud.h"
- namespace views {
- class Label;
- class View;
- } // namespace views
- namespace ash {
- class TouchHudCanvas;
- class TouchLog;
- // A heads-up display to show touch traces on the screen and log touch events.
- // As a derivative of TouchObserverHud, objects of this class manage their own
- // lifetime.
- class ASH_EXPORT TouchHudDebug : public TouchObserverHud {
- public:
- enum Mode {
- FULLSCREEN,
- REDUCED_SCALE,
- INVISIBLE,
- };
- explicit TouchHudDebug(aura::Window* initial_root);
- TouchHudDebug(const TouchHudDebug&) = delete;
- TouchHudDebug& operator=(const TouchHudDebug&) = delete;
- // Changes the display mode (e.g. scale, visibility). Calling this repeatedly
- // cycles between a fixed number of display modes.
- void ChangeToNextMode();
- Mode mode() const { return mode_; }
- // TouchObserverHud:
- void Clear() override;
- private:
- ~TouchHudDebug() override;
- void SetMode(Mode mode);
- void UpdateTouchPointLabel(int index);
- // TouchObserverHud:
- void OnTouchEvent(ui::TouchEvent* event) override;
- void OnDisplayMetricsChanged(const display::Display& display,
- uint32_t metrics) override;
- void SetHudForRootWindowController(RootWindowController* controller) override;
- void UnsetHudForRootWindowController(
- RootWindowController* controller) override;
- static const int kMaxTouchPoints = 32;
- Mode mode_;
- std::unique_ptr<TouchLog> touch_log_;
- TouchHudCanvas* canvas_;
- views::View* label_container_;
- views::Label* touch_labels_[kMaxTouchPoints];
- };
- } // namespace ash
- #endif // ASH_TOUCH_TOUCH_HUD_DEBUG_H_
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