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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_DEBUG_H_
#define ASH_TOUCH_TOUCH_HUD_DEBUG_H_
#include <stdint.h>
#include <array>
#include <map>
#include <memory>
#include "ash/ash_export.h"
#include "ash/touch/touch_observer_hud.h"
#include "base/memory/raw_ptr.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_;
raw_ptr<TouchHudCanvas> canvas_;
raw_ptr<views::View> label_container_;
std::array<views::Label*, kMaxTouchPoints> touch_labels_;
};
} // namespace ash
#endif // ASH_TOUCH_TOUCH_HUD_DEBUG_H_
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