xref: /external/chromium_org/third_party/WebKit/Source/core/animation/InertAnimation.cpp

/*
 * 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.
 */

#include "config.h"
#include "core/animation/InertAnimation.h"
#include "core/animation/Interpolation.h"

namespace blink {

PassRefPtrWillBeRawPtr<InertAnimation> InertAnimation::create(PassRefPtrWillBeRawPtr<AnimationEffect> effect, const Timing& timing, bool paused)
{
    return adoptRefWillBeNoop(new InertAnimation(effect, timing, paused));
}

InertAnimation::InertAnimation(PassRefPtrWillBeRawPtr<AnimationEffect> effect, const Timing& timing, bool paused)
    : AnimationNode(timing)
    , m_effect(effect)
    , m_paused(paused)
{
}

PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation> > > InertAnimation::sample(double inheritedTime)
{
    updateInheritedTime(inheritedTime, TimingUpdateOnDemand);
    if (!isInEffect())
        return nullptr;

    double iteration = currentIteration();
    ASSERT(iteration >= 0);
    // FIXME: Handle iteration values which overflow int.
    return m_effect->sample(static_cast<int>(iteration), timeFraction(), iterationDuration());
}

double InertAnimation::calculateTimeToEffectChange(bool, double, double) const
{
    return std::numeric_limits<double>::infinity();
}

void InertAnimation::trace(Visitor* visitor)
{
    visitor->trace(m_effect);
    AnimationNode::trace(visitor);
}

} // namespace blink