| /* |
| * 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 TimedItem_h |
| #define TimedItem_h |
| |
| #include "core/animation/Timing.h" |
| #include "wtf/OwnPtr.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/RefCounted.h" |
| |
| namespace WebCore { |
| |
| class AnimationPlayer; |
| class TimedItem; |
| class TimedItemTiming; |
| |
| 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(); |
| } |
| |
| class TimedItem : public RefCounted<TimedItem> { |
| friend class AnimationPlayer; // 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: |
| virtual ~EventDelegate() { }; |
| virtual void onEventCondition(const TimedItem*) = 0; |
| }; |
| |
| virtual ~TimedItem() { } |
| |
| virtual bool isAnimation() const { return false; } |
| |
| Phase phase() const { return ensureCalculated().phase; } |
| bool isCurrent() const { return ensureCalculated().isCurrent; } |
| bool isInEffect() const { return ensureCalculated().isInEffect; } |
| bool isInPlay() const { return ensureCalculated().isInPlay; } |
| double timeToForwardsEffectChange() const { return ensureCalculated().timeToForwardsEffectChange; } |
| double timeToReverseEffectChange() const { return ensureCalculated().timeToReverseEffectChange; } |
| |
| double currentIteration() const { return ensureCalculated().currentIteration; } |
| double iterationDuration() const; |
| |
| // This method returns time in ms as it is unused except via the API. |
| double duration() const { return iterationDuration() * 1000; } |
| |
| double activeDuration() const { return activeDurationInternal() * 1000; } |
| double activeDurationInternal() const; |
| double timeFraction() const { return ensureCalculated().timeFraction; } |
| double startTime() const { return m_startTime * 1000; } |
| double startTimeInternal() const { return m_startTime; } |
| double endTime() const { return endTimeInternal() * 1000; } |
| double endTimeInternal() const { return startTime() + specifiedTiming().startDelay + activeDurationInternal() + specifiedTiming().endDelay; } |
| |
| const AnimationPlayer* player() const { return m_player; } |
| AnimationPlayer* player() { return m_player; } |
| AnimationPlayer* player(bool& isNull) { isNull = !m_player; return m_player; } |
| const Timing& specifiedTiming() const { return m_timing; } |
| PassRefPtr<TimedItemTiming> timing(); |
| void updateSpecifiedTiming(const Timing&); |
| |
| // This method returns time in ms as it is unused except via the API. |
| double localTime(bool& isNull) const { isNull = !m_player; return ensureCalculated().localTime * 1000; } |
| double currentIteration(bool& isNull) const { isNull = !ensureCalculated().isInEffect; return ensureCalculated().currentIteration; } |
| |
| protected: |
| TimedItem(const Timing&, PassOwnPtr<EventDelegate> = nullptr); |
| |
| // When TimedItem 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 hasEvents() const { return m_eventDelegate; } |
| void clearEventDelegate() { m_eventDelegate = nullptr; } |
| |
| private: |
| |
| 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 didAttach() { }; |
| virtual void willDetach() { }; |
| virtual void specifiedTimingChanged() { }; |
| |
| void attach(AnimationPlayer* player) |
| { |
| m_player = player; |
| didAttach(); |
| }; |
| |
| void detach() |
| { |
| ASSERT(m_player); |
| willDetach(); |
| m_player = 0; |
| }; |
| |
| // FIXME: m_parent and m_startTime are placeholders, they depend on timing groups. |
| TimedItem* const m_parent; |
| const double m_startTime; |
| AnimationPlayer* m_player; |
| Timing m_timing; |
| OwnPtr<EventDelegate> m_eventDelegate; |
| |
| mutable struct CalculatedTiming { |
| Phase phase; |
| double currentIteration; |
| double timeFraction; |
| bool isCurrent; |
| bool isInEffect; |
| bool isInPlay; |
| double localTime; |
| double timeToForwardsEffectChange; |
| double timeToReverseEffectChange; |
| } m_calculated; |
| mutable bool m_needsUpdate; |
| mutable double m_lastUpdateTime; |
| |
| const CalculatedTiming& ensureCalculated() const; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif |