| // 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_WM_SYSTEM_GESTURE_EVENT_FILTER_H_ |
| #define ASH_WM_SYSTEM_GESTURE_EVENT_FILTER_H_ |
| |
| #include "ash/shell.h" |
| #include "ash/touch/touch_uma.h" |
| #include "base/timer/timer.h" |
| #include "ui/aura/window_observer.h" |
| #include "ui/events/event_handler.h" |
| #include "ui/gfx/point.h" |
| |
| #include <map> |
| |
| namespace aura { |
| class Window; |
| } |
| |
| namespace ui { |
| class LocatedEvent; |
| } |
| |
| namespace ash { |
| |
| namespace test { |
| class SystemGestureEventFilterTest; |
| } |
| |
| namespace internal { |
| class LongPressAffordanceHandler; |
| class OverviewGestureHandler; |
| class SystemPinchHandler; |
| class TouchUMA; |
| class TwoFingerDragHandler; |
| |
| // An event filter which handles system level gesture events. |
| class SystemGestureEventFilter : public ui::EventHandler, |
| public aura::WindowObserver { |
| public: |
| SystemGestureEventFilter(); |
| virtual ~SystemGestureEventFilter(); |
| |
| // Overridden from ui::EventHandler: |
| virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE; |
| virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE; |
| virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE; |
| virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; |
| |
| // Overridden from aura::WindowObserver. |
| virtual void OnWindowVisibilityChanged(aura::Window* window, |
| bool visible) OVERRIDE; |
| virtual void OnWindowDestroying(aura::Window* window) OVERRIDE; |
| |
| private: |
| friend class ash::test::SystemGestureEventFilterTest; |
| |
| // Removes system-gesture handlers for a window. |
| void ClearGestureHandlerForWindow(aura::Window* window); |
| |
| typedef std::map<aura::Window*, SystemPinchHandler*> WindowPinchHandlerMap; |
| // Created on demand when a system-level pinch gesture is initiated. Destroyed |
| // when the system-level pinch gesture ends for the window. |
| WindowPinchHandlerMap pinch_handlers_; |
| |
| bool system_gestures_enabled_; |
| |
| scoped_ptr<LongPressAffordanceHandler> long_press_affordance_; |
| scoped_ptr<OverviewGestureHandler> overview_gesture_handler_; |
| scoped_ptr<TwoFingerDragHandler> two_finger_drag_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SystemGestureEventFilter); |
| }; |
| |
| } // namespace internal |
| } // namespace ash |
| |
| #endif // ASH_WM_SYSTEM_GESTURE_EVENT_FILTER_H_ |