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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 "ash/ash_export.h"
#include "ash/touch/touch_observer_hud.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
namespace views {
class Label;
class View;
}
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);
// Returns the log of touch events for all displays as a dictionary mapping id
// of each display to its touch log.
static scoped_ptr<base::DictionaryValue> GetAllAsDictionary();
// Changes the display mode (e.g. scale, visibility). Calling this repeatedly
// cycles between a fixed number of display modes.
void ChangeToNextMode();
// Returns log of touch events as a list value. Each item in the list is a
// trace of one touch point.
scoped_ptr<base::ListValue> GetLogAsList() const;
Mode mode() const { return mode_; }
// Overriden from TouchObserverHUD.
void Clear() override;
private:
~TouchHudDebug() override;
void SetMode(Mode mode);
void UpdateTouchPointLabel(int index);
// Overriden from TouchObserverHUD.
void OnTouchEvent(ui::TouchEvent* event) override;
void OnDisplayMetricsChanged(const gfx::Display& display,
uint32_t metrics) override;
void SetHudForRootWindowController(RootWindowController* controller) override;
void UnsetHudForRootWindowController(
RootWindowController* controller) override;
static const int kMaxTouchPoints = 32;
Mode mode_;
scoped_ptr<TouchLog> touch_log_;
TouchHudCanvas* canvas_;
views::View* label_container_;
views::Label* touch_labels_[kMaxTouchPoints];
DISALLOW_COPY_AND_ASSIGN(TouchHudDebug);
};
} // namespace ash
#endif // ASH_TOUCH_TOUCH_HUD_DEBUG_H_
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