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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef AnimationEffectReadOnly_h
#define AnimationEffectReadOnly_h
#include "bindings/core/v8/ScriptWrappable.h"
#include "core/CoreExport.h"
#include "core/animation/Timing.h"
#include "platform/heap/Handle.h"
namespace blink {
class Animation;
class AnimationEffectReadOnly;
class AnimationEffectTimingReadOnly;
class ComputedTimingProperties;
enum TimingUpdateReason { TimingUpdateOnDemand, TimingUpdateForAnimationFrame };
static inline bool isNull(double value) {
return std::isnan(value);
}
static inline double nullValue() {
return std::numeric_limits<double>::quiet_NaN();
}
// Represents the content of an Animation and its fractional timing state.
// http://w3c.github.io/web-animations/#animation-effect
class CORE_EXPORT AnimationEffectReadOnly
: public GarbageCollectedFinalized<AnimationEffectReadOnly>,
public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
friend class Animation; // Calls attach/detach, updateInheritedTime.
public:
// Note that logic in CSSAnimations depends on the order of these values.
enum Phase {
PhaseBefore,
PhaseActive,
PhaseAfter,
PhaseNone,
};
class EventDelegate : public GarbageCollectedFinalized<EventDelegate> {
public:
virtual ~EventDelegate() {}
virtual bool requiresIterationEvents(const AnimationEffectReadOnly&) = 0;
virtual void onEventCondition(const AnimationEffectReadOnly&) = 0;
DEFINE_INLINE_VIRTUAL_TRACE() {}
};
virtual ~AnimationEffectReadOnly() {}
virtual bool isKeyframeEffectReadOnly() const { return false; }
virtual bool isKeyframeEffect() const { return false; }
virtual bool isInertEffect() const { return false; }
Phase getPhase() const { return ensureCalculated().phase; }
bool isCurrent() const { return ensureCalculated().isCurrent; }
bool isInEffect() const { return ensureCalculated().isInEffect; }
bool isInPlay() const { return ensureCalculated().isInPlay; }
double currentIteration() const {
return ensureCalculated().currentIteration;
}
double progress() const { return ensureCalculated().progress; }
double timeToForwardsEffectChange() const {
return ensureCalculated().timeToForwardsEffectChange;
}
double timeToReverseEffectChange() const {
return ensureCalculated().timeToReverseEffectChange;
}
double iterationDuration() const;
double activeDurationInternal() const;
double endTimeInternal() const {
return specifiedTiming().startDelay + activeDurationInternal() +
specifiedTiming().endDelay;
}
const Animation* animation() const { return m_animation; }
Animation* animation() { return m_animation; }
const Timing& specifiedTiming() const { return m_timing; }
virtual AnimationEffectTimingReadOnly* timing();
void updateSpecifiedTiming(const Timing&);
void getComputedTiming(ComputedTimingProperties&);
ComputedTimingProperties getComputedTiming();
DECLARE_VIRTUAL_TRACE();
protected:
explicit AnimationEffectReadOnly(const Timing&, EventDelegate* = nullptr);
// When AnimationEffectReadOnly receives a new inherited time via
// updateInheritedTime it will (if necessary) recalculate timings and (if
// necessary) call updateChildrenAndEffects.
void updateInheritedTime(double inheritedTime, TimingUpdateReason) const;
void invalidate() const { m_needsUpdate = true; }
bool requiresIterationEvents() const {
return m_eventDelegate && m_eventDelegate->requiresIterationEvents(*this);
}
void clearEventDelegate() { m_eventDelegate = nullptr; }
virtual void attach(Animation* animation) { m_animation = animation; }
virtual void detach() {
DCHECK(m_animation);
m_animation = nullptr;
}
double repeatedDuration() const;
virtual void updateChildrenAndEffects() const = 0;
virtual double intrinsicIterationDuration() const { return 0; }
virtual double calculateTimeToEffectChange(
bool forwards,
double localTime,
double timeToNextIteration) const = 0;
virtual void specifiedTimingChanged() {}
Member<Animation> m_animation;
Timing m_timing;
Member<EventDelegate> m_eventDelegate;
mutable struct CalculatedTiming {
DISALLOW_NEW();
Phase phase;
double currentIteration;
double progress;
bool isCurrent;
bool isInEffect;
bool isInPlay;
double localTime;
double timeToForwardsEffectChange;
double timeToReverseEffectChange;
} m_calculated;
mutable bool m_needsUpdate;
mutable double m_lastUpdateTime;
String m_name;
const CalculatedTiming& ensureCalculated() const;
};
} // namespace blink
#endif // AnimationEffectReadOnly_h
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