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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/base/animation/animation_delegate.h" | |
12 #include "ui/base/animation/slide_animation.h" | |
13 #include "ui/compositor/layer.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 ui::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 // ui::AnimationDelegate overrides: | |
35 virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE; | |
36 virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE; | |
37 | |
19 private: | 38 private: |
39 // Sets up the layer hierarchy for showing the effect. This involves making | |
40 // sure everything is on a layer and inserting clipping layers into the | |
41 // hierarchy. | |
42 void ActivateEffect(); | |
43 | |
44 // Utility methods used to create needed layers. | |
45 ui::Layer* CreateClippingLayer(std::string name); | |
sadrul
2013/09/05 16:09:02
const std::string&
rharrison
2013/09/05 20:18:34
Done.
| |
46 ui::Layer* CreateViewLayer(views::View* view); | |
47 | |
48 // Restores the layer hierarchy and states to what they were before the effect | |
49 // was actived. | |
50 void DeactivateEffect(); | |
51 | |
52 // Computes the transforms and counter transforms that are needed to produce | |
53 // the desired effect then applies them. The bounds of the layers may be | |
54 // adjusted due to a call to SetBoundsForEffect, so need to be stored before | |
55 // calling. The entire window is scaled and possibly translated to produce the | |
56 // squishing effect. The non-client area and the content are counter scaled to | |
57 // preserve their size and translated/clipped to fit in the smaller window. | |
58 void ApplyDelta(int delta_y); | |
59 | |
60 // Adjusts the bounds for the layers of interest, so that the scroll end | |
61 // effect appears correctly. It is the responsibility of the caller to save | |
62 // and restore the bounds as needed. | |
63 void SetBoundsForEffect(); | |
64 | |
65 // For layers not at the origin they need to be translated to/from the origin | |
66 // in the transform for the simple inverse transform to be the correct counter | |
67 // tranformation. This is a utility method encapsulates this operation. | |
68 gfx::Transform CounterTransfromAboutPoint(int x, int y); | |
69 | |
70 ScrollEndEffectControllerDelegate* delegate_; // non-owned | |
71 bool is_effect_active_; | |
72 | |
73 scoped_ptr<ui::Layer> frame_clipping_layer_; | |
74 scoped_ptr<ui::Layer> web_clipping_layer_; | |
75 ui::Layer* non_client_layer_; | |
76 ui::Layer* web_contents_layer_; // non-owned | |
77 ui::Layer* devtools_layer_; // non-owned | |
sadrul
2013/09/05 16:09:02
Can you just leave a comment at the top of the blo
rharrison
2013/09/05 20:18:34
Done.
| |
78 ui::Layer* download_layer_; | |
79 | |
80 // Used to reparent |web_contents_layer_| when deactivating the effect. | |
81 ui::Layer* web_contents_parent_; // non-owned | |
82 | |
83 // Used to reparent |devtools_layer_| when deactivating the effect. | |
84 ui::Layer* devtools_parent_; // non-owned | |
85 | |
86 // Saved when the effect is activated, so it can be restored when the | |
87 // effect is deactivated. | |
88 gfx::Rect web_contents_bounds_; | |
89 | |
90 // Saved when the effect is activated, so it can be restored when the | |
91 // effect is deactivated. | |
92 gfx::Rect devtools_bounds_; | |
93 | |
94 // Used to turn off being on a layer when deactivating the effect. | |
95 views::View* non_client_view_; // non-owned | |
96 | |
97 // Used to turn off being on a layer when deactivating the effect. | |
98 views::View* download_view_; // non-owned | |
99 | |
100 // Inverse of the transform that is being applied at the top of the hiearchy | |
101 // for the effect. | |
102 gfx::Transform counter_transform_; | |
103 | |
104 int start_delta_y_; | |
105 int end_delta_y_; | |
106 | |
107 scoped_ptr<ui::SlideAnimation> animation_; | |
108 | |
20 DISALLOW_COPY_AND_ASSIGN(ScrollEndEffectControllerAsh); | 109 DISALLOW_COPY_AND_ASSIGN(ScrollEndEffectControllerAsh); |
21 }; | 110 }; |
22 | 111 |
23 #endif // CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ | 112 #endif // CHROME_BROWSER_UI_VIEWS_FRAME_SCROLL_END_EFFECT_CONTROLLER_ASH_H_ |
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