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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 AnimationNode_h | |
32 #define AnimationNode_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 #include "wtf/OwnPtr.h" | |
39 #include "wtf/PassOwnPtr.h" | |
40 #include "wtf/RefCounted.h" | |
41 | |
42 namespace blink { | |
43 | |
44 class AnimationPlayer; | |
45 class AnimationNode; | |
46 class AnimationNodeTiming; | |
47 class ComputedTimingProperties; | |
48 | |
49 enum TimingUpdateReason { | |
50 TimingUpdateOnDemand, | |
51 TimingUpdateForAnimationFrame | |
52 }; | |
53 | |
54 static inline bool isNull(double value) | |
55 { | |
56 return std::isnan(value); | |
57 } | |
58 | |
59 static inline double nullValue() | |
60 { | |
61 return std::numeric_limits<double>::quiet_NaN(); | |
62 } | |
63 | |
64 class CORE_EXPORT AnimationNode : public RefCountedWillBeGarbageCollectedFinaliz
ed<AnimationNode>, public ScriptWrappable { | |
65 DEFINE_WRAPPERTYPEINFO(); | |
66 friend class AnimationPlayer; // Calls attach/detach, updateInheritedTime. | |
67 public: | |
68 // Note that logic in CSSAnimations depends on the order of these values. | |
69 enum Phase { | |
70 PhaseBefore, | |
71 PhaseActive, | |
72 PhaseAfter, | |
73 PhaseNone, | |
74 }; | |
75 | |
76 class EventDelegate : public NoBaseWillBeGarbageCollectedFinalized<EventDele
gate> { | |
77 public: | |
78 virtual ~EventDelegate() { } | |
79 virtual bool requiresIterationEvents(const AnimationNode&) = 0; | |
80 virtual void onEventCondition(const AnimationNode&) = 0; | |
81 DEFINE_INLINE_VIRTUAL_TRACE() { } | |
82 }; | |
83 | |
84 virtual ~AnimationNode() { } | |
85 | |
86 virtual bool isAnimation() const { return false; } | |
87 | |
88 Phase phase() 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 timeFraction() const { return ensureCalculated().timeFraction; } | |
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 startTimeInternal() const { return m_startTime; } | |
100 double endTimeInternal() const { return std::max(startTimeInternal(), startT
imeInternal() + specifiedTiming().startDelay + activeDurationInternal() + specif
iedTiming().endDelay); } | |
101 | |
102 const AnimationPlayer* player() const { return m_player; } | |
103 AnimationPlayer* player() { return m_player; } | |
104 const Timing& specifiedTiming() const { return m_timing; } | |
105 PassRefPtrWillBeRawPtr<AnimationNodeTiming> timing(); | |
106 void updateSpecifiedTiming(const Timing&); | |
107 | |
108 void computedTiming(ComputedTimingProperties&); | |
109 ComputedTimingProperties computedTiming(); | |
110 | |
111 void setName(const String& name) { m_name = name; } | |
112 const String& name() const { return m_name; } | |
113 | |
114 DECLARE_VIRTUAL_TRACE(); | |
115 | |
116 protected: | |
117 explicit AnimationNode(const Timing&, PassOwnPtrWillBeRawPtr<EventDelegate>
= nullptr); | |
118 | |
119 // When AnimationNode receives a new inherited time via updateInheritedTime | |
120 // it will (if necessary) recalculate timings and (if necessary) call | |
121 // updateChildrenAndEffects. | |
122 void updateInheritedTime(double inheritedTime, TimingUpdateReason) const; | |
123 void invalidate() const { m_needsUpdate = true; }; | |
124 bool requiresIterationEvents() const { return m_eventDelegate && m_eventDele
gate->requiresIterationEvents(*this); } | |
125 void clearEventDelegate() { m_eventDelegate = nullptr; } | |
126 | |
127 virtual void attach(AnimationPlayer* player) | |
128 { | |
129 m_player = player; | |
130 } | |
131 | |
132 virtual void detach() | |
133 { | |
134 ASSERT(m_player); | |
135 m_player = nullptr; | |
136 } | |
137 | |
138 double repeatedDuration() const; | |
139 | |
140 virtual void updateChildrenAndEffects() const = 0; | |
141 virtual double intrinsicIterationDuration() const { return 0; }; | |
142 virtual double calculateTimeToEffectChange(bool forwards, double localTime,
double timeToNextIteration) const = 0; | |
143 virtual void specifiedTimingChanged() { } | |
144 | |
145 // FIXME: m_parent and m_startTime are placeholders, they depend on timing g
roups. | |
146 RawPtrWillBeMember<AnimationNode> m_parent; | |
147 const double m_startTime; | |
148 RawPtrWillBeMember<AnimationPlayer> m_player; | |
149 Timing m_timing; | |
150 OwnPtrWillBeMember<EventDelegate> m_eventDelegate; | |
151 | |
152 mutable struct CalculatedTiming { | |
153 Phase phase; | |
154 double currentIteration; | |
155 double timeFraction; | |
156 bool isCurrent; | |
157 bool isInEffect; | |
158 bool isInPlay; | |
159 double localTime; | |
160 double timeToForwardsEffectChange; | |
161 double timeToReverseEffectChange; | |
162 } m_calculated; | |
163 mutable bool m_needsUpdate; | |
164 mutable double m_lastUpdateTime; | |
165 String m_name; | |
166 | |
167 const CalculatedTiming& ensureCalculated() const; | |
168 }; | |
169 | |
170 } // namespace blink | |
171 | |
172 #endif // AnimationNode_h | |
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