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 THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INERT_EFFECT_H_ 32 #define THIRD_PARTY_BLINK_RENDERER_CORE_ANIMATION_INERT_EFFECT_H_ 33 34 #include "third_party/blink/renderer/core/animation/animation_effect.h" 35 #include "third_party/blink/renderer/core/animation/keyframe_effect_model.h" 36 #include "third_party/blink/renderer/core/core_export.h" 37 38 namespace blink { 39 40 // Lightweight subset of KeyframeEffect. 41 // Used to transport data for deferred KeyframeEffect construction and one off 42 // Interpolation sampling. 43 class CORE_EXPORT InertEffect final : public AnimationEffect { 44 public: 45 InertEffect(KeyframeEffectModelBase*, 46 const Timing&, 47 bool paused, 48 base::Optional<double> inherited_time, 49 base::Optional<TimelinePhase> inherited_phase); 50 51 void Sample(HeapVector<Member<Interpolation>>&) const; Model()52 KeyframeEffectModelBase* Model() const { return model_.Get(); } Paused()53 bool Paused() const { return paused_; } 54 IsInertEffect()55 bool IsInertEffect() const final { return true; } 56 57 void Trace(Visitor*) const override; 58 59 protected: UpdateChildrenAndEffects()60 void UpdateChildrenAndEffects() const override {} 61 AnimationTimeDelta CalculateTimeToEffectChange( 62 bool forwards, 63 base::Optional<double> inherited_time, 64 AnimationTimeDelta time_to_next_iteration) const override; 65 66 private: 67 Member<KeyframeEffectModelBase> model_; 68 bool paused_; 69 base::Optional<double> inherited_time_; 70 base::Optional<TimelinePhase> inherited_phase_; 71 }; 72 73 template <> 74 struct DowncastTraits<InertEffect> { 75 static bool AllowFrom(const AnimationEffect& animationEffect) { 76 return animationEffect.IsInertEffect(); 77 } 78 }; 79 80 } // namespace blink 81 82 #endif 83