| // 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_GESTURES_LONG_PRESS_AFFORDANCE_HANDLER_H_ |
| #define ASH_WM_GESTURES_LONG_PRESS_AFFORDANCE_HANDLER_H_ |
| |
| #include "base/timer/timer.h" |
| #include "ui/base/animation/animation_delegate.h" |
| #include "ui/base/animation/linear_animation.h" |
| #include "ui/gfx/point.h" |
| |
| namespace aura { |
| class Window; |
| } |
| |
| namespace ui { |
| class LocatedEvent; |
| } |
| |
| namespace ash { |
| |
| namespace test { |
| class SystemGestureEventFilterTest; |
| } |
| |
| namespace internal { |
| |
| // LongPressAffordanceHandler displays an animated affordance that is shown |
| // on a TAP_DOWN gesture. The animation sequence consists of two parts: |
| // The first part is a grow animation that starts at semi-long-press and |
| // completes on a long-press gesture. The affordance animates to full size |
| // during grow animation. |
| // The second part is a shrink animation that start after grow and shrinks the |
| // affordance out of view. |
| class LongPressAffordanceHandler : public ui::AnimationDelegate, |
| public ui::LinearAnimation { |
| public: |
| LongPressAffordanceHandler(); |
| virtual ~LongPressAffordanceHandler(); |
| |
| // Display or removes long press affordance according to the |event|. |
| void ProcessEvent(aura::Window* target, |
| ui::LocatedEvent* event, |
| int touch_id); |
| |
| private: |
| friend class ash::test::SystemGestureEventFilterTest; |
| |
| enum LongPressAnimationType { |
| NONE, |
| GROW_ANIMATION, |
| SHRINK_ANIMATION, |
| }; |
| |
| void StartAnimation(); |
| void StopAnimation(); |
| |
| // Overridden from ui::LinearAnimation. |
| virtual void AnimateToState(double state) OVERRIDE; |
| virtual bool ShouldSendCanceledFromStop() OVERRIDE; |
| |
| // Overridden from ui::AnimationDelegate. |
| virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE; |
| |
| class LongPressAffordanceView; |
| scoped_ptr<LongPressAffordanceView> view_; |
| gfx::Point tap_down_location_; |
| int tap_down_touch_id_; |
| base::OneShotTimer<LongPressAffordanceHandler> timer_; |
| int64 tap_down_display_id_; |
| LongPressAnimationType current_animation_type_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LongPressAffordanceHandler); |
| }; |
| |
| } // namespace internal |
| } // namespace ash |
| |
| #endif // ASH_WM_GESTURES_LONG_PRESS_AFFORDANCE_HANDLER_H_ |