third_party/WebKit/Source/core/animation/InertAnimation.cpp

   1 /*
   2  * Copyright (C) 2013 Google Inc. All rights reserved.
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   4  * Redistribution and use in source and binary forms, with or without
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  10  *     * Redistributions in binary form must reproduce the above
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  16  * this software without specific prior written permission.
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  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "core/animation/InertAnimation.h"
  33 #include "core/animation/Interpolation.h"
  34
  35 namespace blink {
  36
  37 PassRefPtrWillBeRawPtr<InertAnimation> InertAnimation::create(PassRefPtrWillBeRawPtr<AnimationEffect> effect, const Timing& timing, bool paused, double inheritedTime)
  38 {
  39     return adoptRefWillBeNoop(new InertAnimation(effect, timing, paused, inheritedTime));
  40 }
  41
  42 InertAnimation::InertAnimation(PassRefPtrWillBeRawPtr<AnimationEffect> effect, const Timing& timing, bool paused, double inheritedTime)
  43     : AnimationNode(timing)
  44     , m_effect(effect)
  45     , m_paused(paused)
  46     , m_inheritedTime(inheritedTime)
  47 {
  48 }
  49
  50 void InertAnimation::sample(OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>>& result)
  51 {
  52     updateInheritedTime(m_inheritedTime, TimingUpdateOnDemand);
  53     if (!isInEffect()) {
  54         result.clear();
  55         return;
  56     }
  57
  58     double iteration = currentIteration();
  59     ASSERT(iteration >= 0);
  60     // FIXME: Handle iteration values which overflow int.
  61     return m_effect->sample(static_cast<int>(iteration), timeFraction(), iterationDuration(), result);
  62 }
  63
  64 double InertAnimation::calculateTimeToEffectChange(bool, double, double) const
  65 {
  66     return std::numeric_limits<double>::infinity();
  67 }
  68
  69 DEFINE_TRACE(InertAnimation)
  70 {
  71     visitor->trace(m_effect);
  72     AnimationNode::trace(visitor);
  73 }
  74
  75 } // namespace blink