| /* |
| * 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 "core/CoreExport.h" |
| #include "core/animation/Timing.h" |
| #include "platform/bindings/ScriptWrappable.h" |
| #include "platform/heap/Handle.h" |
| |
| namespace blink { |
| |
| class Animation; |
| class AnimationEffectReadOnly; |
| class AnimationEffectTimingReadOnly; |
| class ComputedTimingProperties; |
| |
| enum TimingUpdateReason { |
| kTimingUpdateOnDemand, |
| kTimingUpdateForAnimationFrame |
| }; |
| |
| 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 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 { |
| kPhaseBefore, |
| kPhaseActive, |
| kPhaseAfter, |
| kPhaseNone, |
| }; |
| |
| class EventDelegate : public GarbageCollectedFinalized<EventDelegate> { |
| public: |
| virtual ~EventDelegate() = default; |
| virtual bool RequiresIterationEvents(const AnimationEffectReadOnly&) = 0; |
| virtual void OnEventCondition(const AnimationEffectReadOnly&) = 0; |
| virtual void Trace(blink::Visitor* visitor) {} |
| }; |
| |
| virtual ~AnimationEffectReadOnly() = default; |
| |
| 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().is_current; } |
| bool IsInEffect() const { return EnsureCalculated().is_in_effect; } |
| bool IsInPlay() const { return EnsureCalculated().is_in_play; } |
| double CurrentIteration() const { |
| return EnsureCalculated().current_iteration; |
| } |
| double Progress() const { return EnsureCalculated().progress; } |
| double TimeToForwardsEffectChange() const { |
| return EnsureCalculated().time_to_forwards_effect_change; |
| } |
| double TimeToReverseEffectChange() const { |
| return EnsureCalculated().time_to_reverse_effect_change; |
| } |
| |
| double IterationDuration() const; |
| double ActiveDurationInternal() const; |
| double EndTimeInternal() const { |
| return SpecifiedTiming().start_delay + ActiveDurationInternal() + |
| SpecifiedTiming().end_delay; |
| } |
| |
| const Animation* GetAnimation() const { return animation_; } |
| Animation* GetAnimation() { return animation_; } |
| const Timing& SpecifiedTiming() const { return timing_; } |
| virtual AnimationEffectTimingReadOnly* timing(); |
| void UpdateSpecifiedTiming(const Timing&); |
| EventDelegate* GetEventDelegate() { return event_delegate_; } |
| |
| void getComputedTiming(ComputedTimingProperties&); |
| ComputedTimingProperties getComputedTiming(); |
| |
| virtual void Trace(blink::Visitor*); |
| |
| 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 inherited_time, TimingUpdateReason) const; |
| void Invalidate() const { needs_update_ = true; } |
| bool RequiresIterationEvents() const { |
| return event_delegate_ && event_delegate_->RequiresIterationEvents(*this); |
| } |
| void ClearEventDelegate() { event_delegate_ = nullptr; } |
| |
| virtual void Attach(Animation* animation) { animation_ = animation; } |
| |
| virtual void Detach() { |
| DCHECK(animation_); |
| animation_ = nullptr; |
| } |
| |
| double RepeatedDuration() const; |
| |
| virtual void UpdateChildrenAndEffects() const = 0; |
| virtual double IntrinsicIterationDuration() const { return 0; } |
| virtual double CalculateTimeToEffectChange( |
| bool forwards, |
| double local_time, |
| double time_to_next_iteration) const = 0; |
| virtual void SpecifiedTimingChanged() {} |
| |
| Member<Animation> animation_; |
| Timing timing_; |
| Member<EventDelegate> event_delegate_; |
| |
| mutable struct CalculatedTiming { |
| DISALLOW_NEW(); |
| Phase phase; |
| double current_iteration; |
| double progress; |
| bool is_current; |
| bool is_in_effect; |
| bool is_in_play; |
| double local_time; |
| double time_to_forwards_effect_change; |
| double time_to_reverse_effect_change; |
| } calculated_; |
| mutable bool needs_update_; |
| mutable double last_update_time_; |
| String name_; |
| |
| const CalculatedTiming& EnsureCalculated() const; |
| }; |
| |
| } // namespace blink |
| |
| #endif // AnimationEffectReadOnly_h |