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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ | 5 #ifndef CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ |
6 #define CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ | 6 #define CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ |
7 | 7 |
8 #include "base/compiler_specific.h" | 8 #include "base/compiler_specific.h" |
| 9 #include "base/memory/scoped_ptr.h" |
9 #include "chrome/browser/ui/views/frame/scroll_end_effect_controller.h" | 10 #include "chrome/browser/ui/views/frame/scroll_end_effect_controller.h" |
| 11 #include "ui/compositor/layer.h" |
| 12 #include "ui/gfx/animation/animation_delegate.h" |
| 13 #include "ui/gfx/animation/slide_animation.h" |
| 14 #include "ui/gfx/rect.h" |
| 15 #include "ui/gfx/transform.h" |
10 | 16 |
11 class ScrollEndEffectControllerAsh : public ScrollEndEffectController { | 17 namespace views { |
| 18 class View; |
| 19 } |
| 20 |
| 21 // Class that implements the scroll end effect by controlling the layout of |
| 22 // layers and the transforms applied to them. This class depends heavily on |
| 23 // ScrollEndEffectControllerDelegate, which is implemented in BrowserView. |
| 24 class ScrollEndEffectControllerAsh : public ScrollEndEffectController, |
| 25 public gfx::AnimationDelegate { |
12 public: | 26 public: |
13 ScrollEndEffectControllerAsh(); | 27 explicit ScrollEndEffectControllerAsh( |
| 28 ScrollEndEffectControllerDelegate* delegate); |
14 virtual ~ScrollEndEffectControllerAsh(); | 29 virtual ~ScrollEndEffectControllerAsh(); |
15 | 30 |
16 // ScrollEndEffectController overides: | 31 // ScrollEndEffectController overrides: |
17 virtual void OverscrollUpdate(int delta_y) OVERRIDE; | 32 virtual void OverscrollUpdate(int delta_y) OVERRIDE; |
18 | 33 |
| 34 // gfx::AnimationDelegate overrides: |
| 35 virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE; |
| 36 virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE; |
| 37 |
19 private: | 38 private: |
| 39 friend class ScrollEndEffectControllerAshTest; |
| 40 |
| 41 // Sets up the layer hierarchy for showing the effect. This involves making |
| 42 // sure everything is on a layer and inserting clipping layers into the |
| 43 // hierarchy. |
| 44 void ActivateEffect(); |
| 45 |
| 46 // Restores the layer hierarchy and states to what they were before the effect |
| 47 // was actived. |
| 48 void DeactivateEffect(); |
| 49 |
| 50 // Computes the transforms and counter transforms that are needed to produce |
| 51 // the desired effect then applies them. The bounds of the layers may be |
| 52 // adjusted due to a call to SetBoundsForEffect, so need to be stored before |
| 53 // calling. The entire window is scaled and possibly translated to produce the |
| 54 // squishing effect. The non-client area and the content are counter scaled to |
| 55 // preserve their size and translated/clipped to fit in the smaller window. |
| 56 void ApplyDelta(int delta_y); |
| 57 |
| 58 ScrollEndEffectControllerDelegate* delegate_; // non-owned |
| 59 bool is_effect_active_; |
| 60 |
| 61 // The size of the frame at the beginning of the effect, so that the effect |
| 62 // can scale relative to it and the value can be restored at the end. |
| 63 gfx::Rect frame_bounds_; |
| 64 |
| 65 // Control variables related to the current delta_y being applied for the |
| 66 // effect and used when animating. |
| 67 int start_delta_y_; |
| 68 int current_delta_y_; |
| 69 int end_delta_y_; |
| 70 |
| 71 scoped_ptr<gfx::SlideAnimation> animation_; |
| 72 |
20 DISALLOW_COPY_AND_ASSIGN(ScrollEndEffectControllerAsh); | 73 DISALLOW_COPY_AND_ASSIGN(ScrollEndEffectControllerAsh); |
21 }; | 74 }; |
22 | 75 |
23 #endif // CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ | 76 #endif // CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ |
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