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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "ui/base/animation/animation.h" | |
6 | |
7 #include "ui/base/animation/animation_container.h" | |
8 #include "ui/base/animation/animation_delegate.h" | |
9 #include "ui/base/animation/tween.h" | |
10 #include "ui/gfx/rect.h" | |
11 | |
12 #if defined(OS_WIN) | |
13 #include "base/win/windows_version.h" | |
14 #endif | |
15 | |
16 namespace ui { | |
17 | |
18 Animation::Animation(base::TimeDelta timer_interval) | |
19 : timer_interval_(timer_interval), | |
20 is_animating_(false), | |
21 delegate_(NULL) { | |
22 } | |
23 | |
24 Animation::~Animation() { | |
25 // Don't send out notification from the destructor. Chances are the delegate | |
26 // owns us and is being deleted as well. | |
27 if (is_animating_) | |
28 container_->Stop(this); | |
29 } | |
30 | |
31 void Animation::Start() { | |
32 if (is_animating_) | |
33 return; | |
34 | |
35 if (!container_.get()) | |
36 container_ = new AnimationContainer(); | |
37 | |
38 is_animating_ = true; | |
39 | |
40 container_->Start(this); | |
41 | |
42 AnimationStarted(); | |
43 } | |
44 | |
45 void Animation::Stop() { | |
46 if (!is_animating_) | |
47 return; | |
48 | |
49 is_animating_ = false; | |
50 | |
51 // Notify the container first as the delegate may delete us. | |
52 container_->Stop(this); | |
53 | |
54 AnimationStopped(); | |
55 | |
56 if (delegate_) { | |
57 if (ShouldSendCanceledFromStop()) | |
58 delegate_->AnimationCanceled(this); | |
59 else | |
60 delegate_->AnimationEnded(this); | |
61 } | |
62 } | |
63 | |
64 double Animation::CurrentValueBetween(double start, double target) const { | |
65 return Tween::ValueBetween(GetCurrentValue(), start, target); | |
66 } | |
67 | |
68 int Animation::CurrentValueBetween(int start, int target) const { | |
69 return Tween::ValueBetween(GetCurrentValue(), start, target); | |
70 } | |
71 | |
72 gfx::Rect Animation::CurrentValueBetween(const gfx::Rect& start_bounds, | |
73 const gfx::Rect& target_bounds) const { | |
74 return Tween::ValueBetween(GetCurrentValue(), start_bounds, target_bounds); | |
75 } | |
76 | |
77 void Animation::SetContainer(AnimationContainer* container) { | |
78 if (container == container_.get()) | |
79 return; | |
80 | |
81 if (is_animating_) | |
82 container_->Stop(this); | |
83 | |
84 if (container) | |
85 container_ = container; | |
86 else | |
87 container_ = new AnimationContainer(); | |
88 | |
89 if (is_animating_) | |
90 container_->Start(this); | |
91 } | |
92 | |
93 // static | |
94 bool Animation::ShouldRenderRichAnimation() { | |
95 #if defined(OS_WIN) | |
96 if (base::win::GetVersion() >= base::win::VERSION_VISTA) { | |
97 BOOL result; | |
98 // Get "Turn off all unnecessary animations" value. | |
99 if (::SystemParametersInfo(SPI_GETCLIENTAREAANIMATION, 0, &result, 0)) { | |
100 // There seems to be a typo in the MSDN document (as of May 2009): | |
101 // http://msdn.microsoft.com/en-us/library/ms724947(VS.85).aspx | |
102 // The document states that the result is TRUE when animations are | |
103 // _disabled_, but in fact, it is TRUE when they are _enabled_. | |
104 return !!result; | |
105 } | |
106 } | |
107 return !::GetSystemMetrics(SM_REMOTESESSION); | |
108 #endif | |
109 return true; | |
110 } | |
111 | |
112 bool Animation::ShouldSendCanceledFromStop() { | |
113 return false; | |
114 } | |
115 | |
116 void Animation::SetStartTime(base::TimeTicks start_time) { | |
117 start_time_ = start_time; | |
118 } | |
119 | |
120 base::TimeDelta Animation::GetTimerInterval() const { | |
121 return timer_interval_; | |
122 } | |
123 | |
124 } // namespace ui | |
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