Add a MotionEventGeneric implementation

ui/events/gesture_detection/motion_event_generic.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_GENERIC_H_
+#define UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_GENERIC_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "ui/events/gesture_detection/gesture_detection_export.h"
+#include "ui/events/gesture_detection/motion_event.h"
+
+namespace ui {
+
+struct GESTURE_DETECTION_EXPORT PointerProperties {
+  PointerProperties();
+  PointerProperties(float x, float y);
+
+  int id;
+  MotionEvent::ToolType tool_type;
+  float x;
+  float y;
+  float raw_x;
+  float raw_y;
+  float pressure;
+  float touch_major;
+};
+
+// A generic MotionEvent implementation.
+class GESTURE_DETECTION_EXPORT MotionEventGeneric : public MotionEvent {
+ public:
+  MotionEventGeneric(Action action,
+                     base::TimeTicks event_time,
+                     const PointerProperties& pointer);
+  MotionEventGeneric(const MotionEventGeneric& other);
+
+  virtual ~MotionEventGeneric();
+
+  // 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 GetRawX(size_t pointer_index) const OVERRIDE;
+  virtual float GetRawY(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 ToolType GetToolType(size_t pointer_index) const OVERRIDE;
+  virtual int GetButtonState() const OVERRIDE;
+  virtual base::TimeTicks GetEventTime() const OVERRIDE;
+  virtual scoped_ptr<MotionEvent> Clone() const OVERRIDE;
+  virtual scoped_ptr<MotionEvent> Cancel() const OVERRIDE;
+
+  void PushPointer(const PointerProperties& pointer);
+
+  void set_action(Action action) { action_ = action; }
+  void set_event_time(base::TimeTicks event_time) { event_time_ = event_time; }
+  void set_id(int id) { id_ = id; }
+  void set_action_index(int action_index) { action_index_ = action_index; }
+  void set_button_state(int button_state) { button_state_ = button_state; }
+
+ protected:
+  MotionEventGeneric();
+
+  void PopPointer();
+
+  PointerProperties& pointer(size_t index) { return pointers_[index]; }
+  const PointerProperties& pointer(size_t index) const {
+    return pointers_[index];
+  }
+
+  Action action_;
+  base::TimeTicks event_time_;
+  int id_;
+  int action_index_;
+  int button_state_;
+  std::vector<PointerProperties> pointers_;
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_GENERIC_H_