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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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