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// Copyright (c) 2012 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_OBSERVER_UMA_H_
#define ASH_TOUCH_TOUCH_OBSERVER_UMA_H_
#include <map>
#include "ash/shell.h"
#include "base/macros.h"
#include "base/memory/singleton.h"
#include "ui/gfx/geometry/point.h"
#include "ui/views/widget/widget.h"
namespace aura {
class Window;
}
namespace ash {
// Records some touch/gesture event specific details (e.g. what gestures are
// targetted to which components etc.)
class ASH_EXPORT TouchUMA {
public:
enum GestureActionType {
GESTURE_UNKNOWN,
GESTURE_OMNIBOX_PINCH,
GESTURE_OMNIBOX_SCROLL,
GESTURE_TABSTRIP_PINCH,
GESTURE_TABSTRIP_SCROLL,
GESTURE_BEZEL_SCROLL,
GESTURE_DESKTOP_SCROLL,
GESTURE_DESKTOP_PINCH,
GESTURE_WEBPAGE_PINCH,
GESTURE_WEBPAGE_SCROLL,
GESTURE_WEBPAGE_TAP,
GESTURE_TABSTRIP_TAP,
GESTURE_BEZEL_DOWN,
GESTURE_TABSWITCH_TAP,
GESTURE_TABNOSWITCH_TAP,
GESTURE_TABCLOSE_TAP,
GESTURE_NEWTAB_TAP,
GESTURE_ROOTVIEWTOP_TAP,
GESTURE_FRAMEMAXIMIZE_TAP,
GESTURE_FRAMEVIEW_TAP,
GESTURE_MAXIMIZE_DOUBLETAP,
// NOTE: Add new action types only immediately above this line. Also,
// make sure the enum list in tools/histogram/histograms.xml is
// updated with any change in here.
GESTURE_ACTION_COUNT
};
// Returns the singleton instance.
static TouchUMA* GetInstance();
void RecordGestureEvent(aura::Window* target,
const ui::GestureEvent& event);
void RecordGestureAction(GestureActionType action);
void RecordTouchEvent(aura::Window* target,
const ui::TouchEvent& event);
private:
friend struct base::DefaultSingletonTraits<TouchUMA>;
TouchUMA();
~TouchUMA();
void UpdateTouchState(const ui::TouchEvent& event);
GestureActionType FindGestureActionType(aura::Window* window,
const ui::GestureEvent& event);
bool is_single_finger_gesture_;
// These are used to measure the number of touch-start events we receive in a
// quick succession, regardless of the target window.
bool touch_in_progress_;
int burst_length_;
base::TimeDelta last_touch_down_time_;
DISALLOW_COPY_AND_ASSIGN(TouchUMA);
};
} // namespace ash
#endif // ASH_TOUCH_TOUCH_OBSERVER_UMA_H_