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| 1 /* | |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #ifndef AnimationEffect_h | |
| 32 #define AnimationEffect_h | |
| 33 | |
| 34 #include "bindings/core/v8/ScriptWrappable.h" | |
| 35 #include "core/CoreExport.h" | |
| 36 #include "core/animation/Timing.h" | |
| 37 #include "platform/heap/Handle.h" | |
| 38 | |
| 39 namespace blink { | |
| 40 | |
| 41 class Animation; | |
| 42 class AnimationEffect; | |
| 43 class AnimationEffectTiming; | |
| 44 class ComputedTimingProperties; | |
| 45 | |
| 46 enum TimingUpdateReason { | |
| 47 TimingUpdateOnDemand, | |
| 48 TimingUpdateForAnimationFrame | |
| 49 }; | |
| 50 | |
| 51 static inline bool isNull(double value) | |
| 52 { | |
| 53 return std::isnan(value); | |
| 54 } | |
| 55 | |
| 56 static inline double nullValue() | |
| 57 { | |
| 58 return std::numeric_limits<double>::quiet_NaN(); | |
| 59 } | |
| 60 | |
| 61 // Represents the content of an Animation and its fractional timing state. | |
| 62 // http://w3c.github.io/web-animations/#animation-effect | |
| 63 class CORE_EXPORT AnimationEffect : public GarbageCollectedFinalized<AnimationEf
fect>, public ScriptWrappable { | |
| 64 DEFINE_WRAPPERTYPEINFO(); | |
| 65 friend class Animation; // Calls attach/detach, updateInheritedTime. | |
| 66 public: | |
| 67 // Note that logic in CSSAnimations depends on the order of these values. | |
| 68 enum Phase { | |
| 69 PhaseBefore, | |
| 70 PhaseActive, | |
| 71 PhaseAfter, | |
| 72 PhaseNone, | |
| 73 }; | |
| 74 | |
| 75 class EventDelegate : public GarbageCollectedFinalized<EventDelegate> { | |
| 76 public: | |
| 77 virtual ~EventDelegate() { } | |
| 78 virtual bool requiresIterationEvents(const AnimationEffect&) = 0; | |
| 79 virtual void onEventCondition(const AnimationEffect&) = 0; | |
| 80 DEFINE_INLINE_VIRTUAL_TRACE() { } | |
| 81 }; | |
| 82 | |
| 83 virtual ~AnimationEffect() { } | |
| 84 | |
| 85 virtual bool isKeyframeEffect() const { return false; } | |
| 86 virtual bool isInertEffect() const { return false; } | |
| 87 | |
| 88 Phase getPhase() const { return ensureCalculated().phase; } | |
| 89 bool isCurrent() const { return ensureCalculated().isCurrent; } | |
| 90 bool isInEffect() const { return ensureCalculated().isInEffect; } | |
| 91 bool isInPlay() const { return ensureCalculated().isInPlay; } | |
| 92 double currentIteration() const { return ensureCalculated().currentIteration
; } | |
| 93 double progress() const { return ensureCalculated().progress; } | |
| 94 double timeToForwardsEffectChange() const { return ensureCalculated().timeTo
ForwardsEffectChange; } | |
| 95 double timeToReverseEffectChange() const { return ensureCalculated().timeToR
everseEffectChange; } | |
| 96 | |
| 97 double iterationDuration() const; | |
| 98 double activeDurationInternal() const; | |
| 99 double endTimeInternal() const { return specifiedTiming().startDelay + activ
eDurationInternal() + specifiedTiming().endDelay; } | |
| 100 | |
| 101 const Animation* animation() const { return m_animation; } | |
| 102 Animation* animation() { return m_animation; } | |
| 103 const Timing& specifiedTiming() const { return m_timing; } | |
| 104 AnimationEffectTiming* timing(); | |
| 105 void updateSpecifiedTiming(const Timing&); | |
| 106 | |
| 107 void getComputedTiming(ComputedTimingProperties&); | |
| 108 ComputedTimingProperties getComputedTiming(); | |
| 109 | |
| 110 DECLARE_VIRTUAL_TRACE(); | |
| 111 | |
| 112 protected: | |
| 113 explicit AnimationEffect(const Timing&, EventDelegate* = nullptr); | |
| 114 | |
| 115 // When AnimationEffect receives a new inherited time via updateInheritedTim
e | |
| 116 // it will (if necessary) recalculate timings and (if necessary) call | |
| 117 // updateChildrenAndEffects. | |
| 118 void updateInheritedTime(double inheritedTime, TimingUpdateReason) const; | |
| 119 void invalidate() const { m_needsUpdate = true; } | |
| 120 bool requiresIterationEvents() const { return m_eventDelegate && m_eventDele
gate->requiresIterationEvents(*this); } | |
| 121 void clearEventDelegate() { m_eventDelegate = nullptr; } | |
| 122 | |
| 123 virtual void attach(Animation* animation) | |
| 124 { | |
| 125 m_animation = animation; | |
| 126 } | |
| 127 | |
| 128 virtual void detach() | |
| 129 { | |
| 130 DCHECK(m_animation); | |
| 131 m_animation = nullptr; | |
| 132 } | |
| 133 | |
| 134 double repeatedDuration() const; | |
| 135 | |
| 136 virtual void updateChildrenAndEffects() const = 0; | |
| 137 virtual double intrinsicIterationDuration() const { return 0; } | |
| 138 virtual double calculateTimeToEffectChange(bool forwards, double localTime,
double timeToNextIteration) const = 0; | |
| 139 virtual void specifiedTimingChanged() { } | |
| 140 | |
| 141 Member<Animation> m_animation; | |
| 142 Timing m_timing; | |
| 143 Member<EventDelegate> m_eventDelegate; | |
| 144 | |
| 145 mutable struct CalculatedTiming { | |
| 146 DISALLOW_NEW(); | |
| 147 Phase phase; | |
| 148 double currentIteration; | |
| 149 double progress; | |
| 150 bool isCurrent; | |
| 151 bool isInEffect; | |
| 152 bool isInPlay; | |
| 153 double localTime; | |
| 154 double timeToForwardsEffectChange; | |
| 155 double timeToReverseEffectChange; | |
| 156 } m_calculated; | |
| 157 mutable bool m_needsUpdate; | |
| 158 mutable double m_lastUpdateTime; | |
| 159 String m_name; | |
| 160 | |
| 161 const CalculatedTiming& ensureCalculated() const; | |
| 162 }; | |
| 163 | |
| 164 } // namespace blink | |
| 165 | |
| 166 #endif // AnimationEffect_h | |
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