| /* |
| * 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/AnimationEffect.h" |
| |
| #include "core/animation/Animation.h" |
| #include "core/animation/AnimationEffectTiming.h" |
| #include "core/animation/ComputedTimingProperties.h" |
| #include "core/animation/TimingCalculations.h" |
| |
| namespace blink { |
| |
| namespace { |
| |
| Timing::FillMode resolvedFillMode(Timing::FillMode fillMode, bool isAnimation) |
| { |
| if (fillMode != Timing::FillModeAuto) |
| return fillMode; |
| if (isAnimation) |
| return Timing::FillModeNone; |
| return Timing::FillModeBoth; |
| } |
| |
| } // namespace |
| |
| AnimationEffect::AnimationEffect(const Timing& timing, EventDelegate* eventDelegate) |
| : m_parent(nullptr) |
| , m_startTime(0) |
| , m_animation(nullptr) |
| , m_timing(timing) |
| , m_eventDelegate(eventDelegate) |
| , m_calculated() |
| , m_needsUpdate(true) |
| , m_lastUpdateTime(nullValue()) |
| { |
| m_timing.assertValid(); |
| } |
| |
| double AnimationEffect::iterationDuration() const |
| { |
| double result = std::isnan(m_timing.iterationDuration) ? intrinsicIterationDuration() : m_timing.iterationDuration; |
| ASSERT(result >= 0); |
| return result; |
| } |
| |
| double AnimationEffect::repeatedDuration() const |
| { |
| const double result = multiplyZeroAlwaysGivesZero(iterationDuration(), m_timing.iterationCount); |
| ASSERT(result >= 0); |
| return result; |
| } |
| |
| double AnimationEffect::activeDurationInternal() const |
| { |
| const double result = m_timing.playbackRate |
| ? repeatedDuration() / std::abs(m_timing.playbackRate) |
| : std::numeric_limits<double>::infinity(); |
| ASSERT(result >= 0); |
| return result; |
| } |
| |
| void AnimationEffect::updateSpecifiedTiming(const Timing& timing) |
| { |
| // FIXME: Test whether the timing is actually different? |
| m_timing = timing; |
| invalidate(); |
| if (m_animation) |
| m_animation->setOutdated(); |
| specifiedTimingChanged(); |
| } |
| |
| void AnimationEffect::computedTiming(ComputedTimingProperties& computedTiming) |
| { |
| // ComputedTimingProperties members. |
| computedTiming.setStartTime(startTimeInternal() * 1000); |
| computedTiming.setEndTime(endTimeInternal() * 1000); |
| computedTiming.setActiveDuration(activeDurationInternal() * 1000); |
| |
| // FIXME: These should be null if not in effect, but current dictionary API |
| // will treat these as undefined. |
| if (ensureCalculated().isInEffect) { |
| computedTiming.setLocalTime(ensureCalculated().localTime * 1000); |
| computedTiming.setTimeFraction(ensureCalculated().timeFraction); |
| computedTiming.setCurrentIteration(ensureCalculated().currentIteration); |
| } |
| |
| // KeyframeEffectOptions members. |
| computedTiming.setDelay(specifiedTiming().startDelay * 1000); |
| computedTiming.setEndDelay(specifiedTiming().endDelay * 1000); |
| computedTiming.setFill(Timing::fillModeString(resolvedFillMode(specifiedTiming().fillMode, isKeyframeEffect()))); |
| computedTiming.setIterationStart(specifiedTiming().iterationStart); |
| computedTiming.setIterations(specifiedTiming().iterationCount); |
| |
| UnrestrictedDoubleOrString duration; |
| duration.setUnrestrictedDouble(iterationDuration() * 1000); |
| computedTiming.setDuration(duration); |
| |
| computedTiming.setPlaybackRate(specifiedTiming().playbackRate); |
| computedTiming.setDirection(Timing::playbackDirectionString(specifiedTiming().direction)); |
| computedTiming.setEasing(specifiedTiming().timingFunction->toString()); |
| } |
| |
| ComputedTimingProperties AnimationEffect::computedTiming() |
| { |
| ComputedTimingProperties result; |
| computedTiming(result); |
| return result; |
| } |
| |
| |
| void AnimationEffect::updateInheritedTime(double inheritedTime, TimingUpdateReason reason) const |
| { |
| bool needsUpdate = m_needsUpdate || (m_lastUpdateTime != inheritedTime && !(isNull(m_lastUpdateTime) && isNull(inheritedTime))); |
| m_needsUpdate = false; |
| m_lastUpdateTime = inheritedTime; |
| |
| const double localTime = inheritedTime - m_startTime; |
| double timeToNextIteration = std::numeric_limits<double>::infinity(); |
| if (needsUpdate) { |
| const double activeDuration = this->activeDurationInternal(); |
| |
| const Phase currentPhase = calculatePhase(activeDuration, localTime, m_timing); |
| // FIXME: parentPhase depends on groups being implemented. |
| const AnimationEffect::Phase parentPhase = AnimationEffect::PhaseActive; |
| const double activeTime = calculateActiveTime(activeDuration, resolvedFillMode(m_timing.fillMode, isKeyframeEffect()), localTime, parentPhase, currentPhase, m_timing); |
| |
| double currentIteration; |
| double timeFraction; |
| if (const double iterationDuration = this->iterationDuration()) { |
| const double startOffset = multiplyZeroAlwaysGivesZero(m_timing.iterationStart, iterationDuration); |
| ASSERT(startOffset >= 0); |
| const double scaledActiveTime = calculateScaledActiveTime(activeDuration, activeTime, startOffset, m_timing); |
| const double iterationTime = calculateIterationTime(iterationDuration, repeatedDuration(), scaledActiveTime, startOffset, m_timing); |
| |
| currentIteration = calculateCurrentIteration(iterationDuration, iterationTime, scaledActiveTime, m_timing); |
| timeFraction = calculateTransformedTime(currentIteration, iterationDuration, iterationTime, m_timing) / iterationDuration; |
| |
| if (!isNull(iterationTime)) { |
| timeToNextIteration = (iterationDuration - iterationTime) / std::abs(m_timing.playbackRate); |
| if (activeDuration - activeTime < timeToNextIteration) |
| timeToNextIteration = std::numeric_limits<double>::infinity(); |
| } |
| } else { |
| const double localIterationDuration = 1; |
| const double localRepeatedDuration = localIterationDuration * m_timing.iterationCount; |
| ASSERT(localRepeatedDuration >= 0); |
| const double localActiveDuration = m_timing.playbackRate ? localRepeatedDuration / std::abs(m_timing.playbackRate) : std::numeric_limits<double>::infinity(); |
| ASSERT(localActiveDuration >= 0); |
| const double localLocalTime = localTime < m_timing.startDelay ? localTime : localActiveDuration + m_timing.startDelay; |
| const AnimationEffect::Phase localCurrentPhase = calculatePhase(localActiveDuration, localLocalTime, m_timing); |
| const double localActiveTime = calculateActiveTime(localActiveDuration, resolvedFillMode(m_timing.fillMode, isKeyframeEffect()), localLocalTime, parentPhase, localCurrentPhase, m_timing); |
| const double startOffset = m_timing.iterationStart * localIterationDuration; |
| ASSERT(startOffset >= 0); |
| const double scaledActiveTime = calculateScaledActiveTime(localActiveDuration, localActiveTime, startOffset, m_timing); |
| const double iterationTime = calculateIterationTime(localIterationDuration, localRepeatedDuration, scaledActiveTime, startOffset, m_timing); |
| |
| currentIteration = calculateCurrentIteration(localIterationDuration, iterationTime, scaledActiveTime, m_timing); |
| timeFraction = calculateTransformedTime(currentIteration, localIterationDuration, iterationTime, m_timing); |
| } |
| |
| m_calculated.currentIteration = currentIteration; |
| m_calculated.timeFraction = timeFraction; |
| |
| m_calculated.phase = currentPhase; |
| m_calculated.isInEffect = !isNull(activeTime); |
| m_calculated.isInPlay = phase() == PhaseActive && (!m_parent || m_parent->isInPlay()); |
| m_calculated.isCurrent = phase() == PhaseBefore || isInPlay() || (m_parent && m_parent->isCurrent()); |
| m_calculated.localTime = m_lastUpdateTime - m_startTime; |
| } |
| |
| // Test for events even if timing didn't need an update as the animation may have gained a start time. |
| // FIXME: Refactor so that we can ASSERT(m_animation) here, this is currently required to be nullable for testing. |
| if (reason == TimingUpdateForAnimationFrame && (!m_animation || m_animation->hasStartTime() || m_animation->paused())) { |
| if (m_eventDelegate) |
| m_eventDelegate->onEventCondition(*this); |
| } |
| |
| if (needsUpdate) { |
| // FIXME: This probably shouldn't be recursive. |
| updateChildrenAndEffects(); |
| m_calculated.timeToForwardsEffectChange = calculateTimeToEffectChange(true, localTime, timeToNextIteration); |
| m_calculated.timeToReverseEffectChange = calculateTimeToEffectChange(false, localTime, timeToNextIteration); |
| } |
| } |
| |
| const AnimationEffect::CalculatedTiming& AnimationEffect::ensureCalculated() const |
| { |
| if (!m_animation) |
| return m_calculated; |
| if (m_animation->outdated()) |
| m_animation->update(TimingUpdateOnDemand); |
| ASSERT(!m_animation->outdated()); |
| return m_calculated; |
| } |
| |
| AnimationEffectTiming* AnimationEffect::timing() |
| { |
| return AnimationEffectTiming::create(this); |
| } |
| |
| DEFINE_TRACE(AnimationEffect) |
| { |
| visitor->trace(m_parent); |
| visitor->trace(m_animation); |
| visitor->trace(m_eventDelegate); |
| } |
| |
| } // namespace blink |