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Side by Side Diff: chrome/browser/ui/views/frame/scroll_end_effect_controller_ash.h

Issue 22265009: Implement initial version of scroll end effect Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Added SlideAnimation to smooth out transitions Created 7 years, 3 months ago
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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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