Revert of Unified Gesture Recognizer

ui/events/gestures/motion_event_aura.h

-// Copyright 2014 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 UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_H_
-#define UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_H_
-
-#include "ui/events/gesture_detection/motion_event.h"
-
-#include <map>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "ui/events/event.h"
-#include "ui/events/events_export.h"
-#include "ui/events/gestures/gesture_sequence.h"
-
-namespace ui {
-
-// Implementation of MotionEvent which takes a stream of ui::TouchEvents.
-class EVENTS_EXPORT MotionEventAura : public MotionEvent {
- public:
-  MotionEventAura();
-  virtual ~MotionEventAura();
-
-  void OnTouch(const TouchEvent& touch);
-
-  // MotionEvent implementation.
-  virtual int GetId() const OVERRIDE;
-  virtual Action GetAction() const OVERRIDE;
-  virtual int GetActionIndex() const OVERRIDE;
-  virtual size_t GetPointerCount() const OVERRIDE;
-  virtual int GetPointerId(size_t pointer_index) const OVERRIDE;
-  virtual float GetX(size_t pointer_index) const OVERRIDE;
-  virtual float GetY(size_t pointer_index) const OVERRIDE;
-  virtual float GetTouchMajor(size_t pointer_index) const OVERRIDE;
-  virtual float GetPressure(size_t pointer_index) const OVERRIDE;
-  virtual base::TimeTicks GetEventTime() const OVERRIDE;
-
-  virtual size_t GetHistorySize() const OVERRIDE;
-  virtual base::TimeTicks GetHistoricalEventTime(size_t historical_index) const
-      OVERRIDE;
-  virtual float GetHistoricalTouchMajor(size_t pointer_index,
-                                        size_t historical_index) const OVERRIDE;
-  virtual float GetHistoricalX(size_t pointer_index,
-                               size_t historical_index) const OVERRIDE;
-  virtual float GetHistoricalY(size_t pointer_index,
-                               size_t historical_index) const OVERRIDE;
-
-  virtual scoped_ptr<MotionEvent> Clone() const OVERRIDE;
-  virtual scoped_ptr<MotionEvent> Cancel() const OVERRIDE;
-
-  int GetSourceDeviceId(size_t pointer_index) const;
-
-  // We can't cleanup removed touch points immediately upon receipt of a
-  // TouchCancel or TouchRelease, as the MotionEvent needs to be able to report
-  // information about those touch events. Once the MotionEvent has been
-  // processed, we call CleanupRemovedTouchPoints to do the required
-  // book-keeping.
-  void CleanupRemovedTouchPoints(const TouchEvent& event);
-
- private:
-  struct PointData {
-    PointData();
-    float x;
-    float y;
-    int touch_id;
-    float pressure;
-    int source_device_id;
-    float major_radius;
-  };
-
-  MotionEventAura(
-      size_t pointer_count,
-      const base::TimeTicks& last_touch_time,
-      Action cached_action,
-      int cached_action_index,
-      const PointData (&active_touches)[GestureSequence::kMaxGesturePoints]);
-
-  static PointData GetPointDataFromTouchEvent(const TouchEvent& touch);
-  void AddTouch(const TouchEvent& touch);
-  void UpdateTouch(const TouchEvent& touch);
-  void UpdateCachedAction(const TouchEvent& touch);
-  size_t GetIndexFromId(int id) const;
-
-  size_t pointer_count_;
-  base::TimeTicks last_touch_time_;
-  Action cached_action_;
-  // The index of the touch responsible for last ACTION_POINTER_DOWN or
-  // ACTION_POINTER_UP. -1 if no such action has occurred.
-  int cached_action_index_;
-
-  // We want constant time indexing by pointer_index, and fast indexing by id.
-  // TODO(tdresser): figure out which constant to use here.
-  PointData active_touches_[GestureSequence::kMaxGesturePoints];
-
-  DISALLOW_COPY_AND_ASSIGN(MotionEventAura);
-};
-
-}  // namespace ui
-
-#endif  // UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_H_