double AnimationBase::getElapsedTime() const
{
#if ENABLE(CSS_ANIMATIONS_LEVEL_2)
if (m_animation->trigger() && m_animation->trigger()->isScrollAnimationTrigger()) {
ScrollAnimationTrigger& scrollTrigger = downcast<ScrollAnimationTrigger>(*m_animation->trigger().get());
if (scrollTrigger.hasEndValue() && m_object) {
float offset = m_compositeAnimation->animationController().scrollPosition();
float startValue = scrollTrigger.startValue().value();
if (offset < startValue)
return 0;
float endValue = scrollTrigger.endValue().value();
if (offset > endValue)
return m_animation->duration();
return m_animation->duration() * (offset - startValue) / (endValue - startValue);
}
}
#endif
if (paused())
return m_pauseTime - m_startTime;
if (m_startTime <= 0)
return 0;
if (postActive() || fillingForwards())
return m_totalDuration;
return beginAnimationUpdateTime() - m_startTime;
}
void ImplicitAnimation::animate(CompositeAnimation*, RenderObject*, const RenderStyle*, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle)
{
// If we get this far and the animation is done, it means we are cleaning up a just finished animation.
// So just return. Everything is already all cleaned up.
if (postActive())
return;
// Reset to start the transition if we are new
if (isNew())
reset(targetStyle);
// Run a cycle of animation.
// We know we will need a new render style, so make one if needed
if (!animatedStyle)
animatedStyle = RenderStyle::clone(targetStyle);
bool needsAnim = CSSPropertyAnimation::blendProperties(this, m_animatingProperty, animatedStyle.get(), m_fromStyle.get(), m_toStyle.get(), progress(1, 0, 0));
// FIXME: we also need to detect cases where we have to software animate for other reasons,
// such as a child using inheriting the transform. https://bugs.webkit.org/show_bug.cgi?id=23902
if (needsAnim)
setAnimating();
else {
#if USE(ACCELERATED_COMPOSITING)
// If we are running an accelerated animation, set a flag in the style which causes the style
// to compare as different to any other style. This ensures that changes to the property
// that is animating are correctly detected during the animation (e.g. when a transition
// gets interrupted).
animatedStyle->setIsRunningAcceleratedAnimation();
#endif
}
// Fire the start timeout if needed
fireAnimationEventsIfNeeded();
}
void KeyframeAnimation::animate(CompositeAnimation*, RenderObject*, const RenderStyle*, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle)
{
// Fire the start timeout if needed
fireAnimationEventsIfNeeded();
// If we have not yet started, we will not have a valid start time, so just start the animation if needed.
if (isNew() && m_animation->playState() == AnimPlayStatePlaying)
updateStateMachine(AnimationStateInputStartAnimation, -1);
// If we get this far and the animation is done, it means we are cleaning up a just finished animation.
// If so, we need to send back the targetStyle.
if (postActive()) {
if (!animatedStyle)
animatedStyle = const_cast<RenderStyle*>(targetStyle);
return;
}
// If we are waiting for the start timer, we don't want to change the style yet.
// Special case 1 - if the delay time is 0, then we do want to set the first frame of the
// animation right away. This avoids a flash when the animation starts.
// Special case 2 - if there is a backwards fill mode, then we want to continue
// through to the style blend so that we get the fromStyle.
if (waitingToStart() && m_animation->delay() > 0 && !m_animation->fillsBackwards())
return;
// FIXME: we need to be more efficient about determining which keyframes we are animating between.
// We should cache the last pair or something.
// Get the from/to styles and progress between
const RenderStyle* fromStyle = 0;
const RenderStyle* toStyle = 0;
double progress;
getKeyframeAnimationInterval(fromStyle, toStyle, progress);
// If either style is 0 we have an invalid case, just stop the animation.
if (!fromStyle || !toStyle) {
updateStateMachine(AnimationStateInputEndAnimation, -1);
return;
}
// Run a cycle of animation.
// We know we will need a new render style, so make one if needed.
if (!animatedStyle)
animatedStyle = RenderStyle::clone(targetStyle);
HashSet<int>::const_iterator endProperties = m_keyframes.endProperties();
for (HashSet<int>::const_iterator it = m_keyframes.beginProperties(); it != endProperties; ++it) {
bool needsAnim = blendProperties(this, *it, animatedStyle.get(), fromStyle, toStyle, progress);
if (needsAnim)
setAnimating();
else {
#if USE(ACCELERATED_COMPOSITING)
// If we are running an accelerated animation, set a flag in the style
// to indicate it. This can be used to make sure we get an updated
// style for hit testing, etc.
animatedStyle->setIsRunningAcceleratedAnimation();
#endif
}
}
}
void AnimationBase::getTimeToNextEvent(double& time, bool& isLooping) const
{
if (postActive()) {
time = -1;
isLooping = false;
return;
}
// Decide when the end or loop event needs to fire
const double elapsedDuration = getElapsedTime();
double durationLeft = 0;
double nextIterationTime = m_totalDuration;
if (m_totalDuration < 0 || elapsedDuration < m_totalDuration) {
durationLeft = m_animation->duration() > 0 ? (m_animation->duration() - fmod(elapsedDuration, m_animation->duration())) : 0;
nextIterationTime = elapsedDuration + durationLeft;
}
if (m_totalDuration < 0 || nextIterationTime < m_totalDuration) {
// We are not at the end yet
ASSERT(nextIterationTime > 0);
isLooping = true;
} else {
// We are at the end
isLooping = false;
}
time = durationLeft;
}
double AnimationBase::progress(double scale, double offset, const TimingFunction* timingFunction) const
{
if (preActive())
return 0;
double dur = m_animation->duration();
if (m_animation->iterationCount() > 0)
dur *= m_animation->iterationCount();
if (postActive() || !m_animation->duration())
return 1.0;
double elapsedTime = getElapsedTime();
if (m_animation->iterationCount() > 0 && elapsedTime >= dur) {
const int integralIterationCount = static_cast<int>(m_animation->iterationCount());
const bool iterationCountHasFractional = m_animation->iterationCount() - integralIterationCount;
return (integralIterationCount % 2 || iterationCountHasFractional) ? 1.0 : 0.0;
}
const double fractionalTime = this->fractionalTime(scale, elapsedTime, offset);
if (!timingFunction)
timingFunction = m_animation->timingFunction();
return timingFunction->evaluate(fractionalTime, accuracyForDuration(m_animation->duration()));
}
bool KeyframeAnimation::animate(CompositeAnimation* compositeAnimation, RenderElement*, const RenderStyle*, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle)
{
// Fire the start timeout if needed
fireAnimationEventsIfNeeded();
// If we have not yet started, we will not have a valid start time, so just start the animation if needed.
if (isNew() && m_animation->playState() == AnimPlayStatePlaying && !compositeAnimation->isSuspended())
updateStateMachine(AnimationStateInput::StartAnimation, -1);
// If we get this far and the animation is done, it means we are cleaning up a just finished animation.
// If so, we need to send back the targetStyle.
if (postActive()) {
if (!animatedStyle)
animatedStyle = const_cast<RenderStyle*>(targetStyle);
return false;
}
// If we are waiting for the start timer, we don't want to change the style yet.
// Special case 1 - if the delay time is 0, then we do want to set the first frame of the
// animation right away. This avoids a flash when the animation starts.
// Special case 2 - if there is a backwards fill mode, then we want to continue
// through to the style blend so that we get the fromStyle.
if (waitingToStart() && m_animation->delay() > 0 && !m_animation->fillsBackwards())
return false;
// If we have no keyframes, don't animate.
if (!m_keyframes.size()) {
updateStateMachine(AnimationStateInput::EndAnimation, -1);
return false;
}
AnimationState oldState = state();
// Run a cycle of animation.
// We know we will need a new render style, so make one if needed.
if (!animatedStyle)
animatedStyle = RenderStyle::clone(targetStyle);
// FIXME: we need to be more efficient about determining which keyframes we are animating between.
// We should cache the last pair or something.
for (auto propertyID : m_keyframes.properties()) {
// Get the from/to styles and progress between
const RenderStyle* fromStyle = nullptr;
const RenderStyle* toStyle = nullptr;
double progress = 0;
fetchIntervalEndpointsForProperty(propertyID, fromStyle, toStyle, progress);
bool needsAnim = CSSPropertyAnimation::blendProperties(this, propertyID, animatedStyle.get(), fromStyle, toStyle, progress);
if (!needsAnim)
// If we are running an accelerated animation, set a flag in the style
// to indicate it. This can be used to make sure we get an updated
// style for hit testing, etc.
// FIXME: still need this?
animatedStyle->setIsRunningAcceleratedAnimation();
}
return state() != oldState;
}
double AnimationBase::getElapsedTime() const
{
if (paused())
return m_pauseTime - m_startTime;
if (m_startTime <= 0)
return 0;
if (postActive())
return 1;
return beginAnimationUpdateTime() - m_startTime;
}
double AnimationBase::getElapsedTime() const
{
ASSERT(!postActive());
if (paused())
return m_pauseTime - m_startTime;
if (m_startTime <= 0)
return 0;
double elapsedTime = beginAnimationUpdateTime() - m_startTime;
// It's possible for the start time to be ahead of the last update time
// if the compositor has just sent notification for the start of an
// accelerated animation.
return max(elapsedTime, 0.0);
}
double AnimationBase::progress(double scale, double offset, const TimingFunction* timingFunction) const
{
if (preActive())
return 0;
if (postActive())
return 1;
double elapsedTime = getElapsedTime();
double duration = m_animation->duration();
if (m_animation->iterationCount() > 0)
duration *= m_animation->iterationCount();
if (fillingForwards())
elapsedTime = duration;
double fractionalTime = this->fractionalTime(scale, elapsedTime, offset);
if (m_animation->iterationCount() > 0 && elapsedTime >= duration) {
if (WTF::isIntegral(fractionalTime))
return fractionalTime;
}
if (!timingFunction)
timingFunction = m_animation->timingFunction().get();
switch (timingFunction->type()) {
case TimingFunction::CubicBezierFunction: {
const CubicBezierTimingFunction* function = static_cast<const CubicBezierTimingFunction*>(timingFunction);
return solveCubicBezierFunction(function->x1(), function->y1(), function->x2(), function->y2(), fractionalTime, m_animation->duration());
}
case TimingFunction::StepsFunction: {
const StepsTimingFunction* stepsTimingFunction = static_cast<const StepsTimingFunction*>(timingFunction);
return solveStepsFunction(stepsTimingFunction->numberOfSteps(), stepsTimingFunction->stepAtStart(), fractionalTime);
}
case TimingFunction::LinearFunction:
return fractionalTime;
}
ASSERT_NOT_REACHED();
return 0;
}
double AnimationBase::progress(double scale, double offset, const TimingFunction* tf) const
{
if (preActive())
return 0;
double elapsedTime = getElapsedTime();
double dur = m_animation->duration();
if (m_animation->iterationCount() > 0)
dur *= m_animation->iterationCount();
if (postActive() || !m_animation->duration())
return 1.0;
if (m_animation->iterationCount() > 0 && elapsedTime >= dur) {
const int integralIterationCount = static_cast<int>(m_animation->iterationCount());
const bool iterationCountHasFractional = m_animation->iterationCount() - integralIterationCount;
return (integralIterationCount % 2 || iterationCountHasFractional) ? 1.0 : 0.0;
}
const double fractionalTime = this->fractionalTime(scale, elapsedTime, offset);
if (!tf)
tf = m_animation->timingFunction().get();
switch (tf->type()) {
case TimingFunction::CubicBezierFunction: {
const CubicBezierTimingFunction* function = static_cast<const CubicBezierTimingFunction*>(tf);
return solveCubicBezierFunction(function->x1(), function->y1(), function->x2(), function->y2(), fractionalTime, m_animation->duration());
}
case TimingFunction::StepsFunction: {
const StepsTimingFunction* stepsTimingFunction = static_cast<const StepsTimingFunction*>(tf);
return solveStepsFunction(stepsTimingFunction->numberOfSteps(), stepsTimingFunction->stepAtStart(), fractionalTime);
}
case TimingFunction::LinearFunction:
return fractionalTime;
}
ASSERT_NOT_REACHED();
return 0;
}
void ImplicitAnimation::animate(CompositeAnimation*, RenderObject*, RenderStyle*, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle)
{
// If we get this far and the animation is done, it means we are cleaning up a just finished animation.
// So just return. Everything is already all cleaned up.
if (postActive())
return;
// Reset to start the transition if we are new
if (isNew())
reset(targetStyle);
// Run a cycle of animation.
// We know we will need a new render style, so make one if needed
if (!animatedStyle)
animatedStyle = RenderStyle::clone(targetStyle);
if (blendProperties(this, m_animatingProperty, animatedStyle.get(), m_fromStyle.get(), m_toStyle.get(), progress(1, 0, 0)))
setAnimating();
// Fire the start timeout if needed
fireAnimationEventsIfNeeded();
}
KeyframeAnimation::~KeyframeAnimation()
{
// Make sure to tell the renderer that we are ending. This will make sure any accelerated animations are removed.
if (!postActive())
endAnimation(true);
}
ImplicitAnimation::~ImplicitAnimation()
{
// Do the cleanup here instead of in the base class so the specialized methods get called
if (!postActive())
updateStateMachine(AnimationStateInputEndAnimation, -1);
}
void KeyframeAnimation::animate(CompositeAnimation* animation, RenderObject* renderer, const RenderStyle* currentStyle,
const RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle)
{
// If we have not yet started, we will not have a valid start time, so just start the animation if needed.
if (isNew() && m_animation->playState() == AnimPlayStatePlaying)
updateStateMachine(AnimationStateInputStartAnimation, -1);
// If we get this far and the animation is done, it means we are cleaning up a just finished animation.
// If so, we need to send back the targetStyle.
if (postActive()) {
if (!animatedStyle)
animatedStyle = const_cast<RenderStyle*>(targetStyle);
return;
}
// If we are waiting for the start timer, we don't want to change the style yet.
// Special case - if the delay time is 0, then we do want to set the first frame of the
// animation right away. This avoids a flash when the animation starts.
if (waitingToStart() && m_animation->delay() > 0)
return;
// FIXME: we need to be more efficient about determining which keyframes we are animating between.
// We should cache the last pair or something.
// Find the first key
double elapsedTime = (m_startTime > 0) ? ((!paused() ? currentTime() : m_pauseTime) - m_startTime) : 0;
if (elapsedTime < 0)
elapsedTime = 0;
double t = m_animation->duration() ? (elapsedTime / m_animation->duration()) : 1;
int i = static_cast<int>(t);
t -= i;
if (m_animation->direction() && (i & 1))
t = 1 - t;
const RenderStyle* fromStyle = 0;
const RenderStyle* toStyle = 0;
double scale = 1;
double offset = 0;
Vector<KeyframeValue>::const_iterator endKeyframes = m_keyframes.endKeyframes();
for (Vector<KeyframeValue>::const_iterator it = m_keyframes.beginKeyframes(); it != endKeyframes; ++it) {
if (t < it->key()) {
// The first key should always be 0, so we should never succeed on the first key
if (!fromStyle)
break;
scale = 1.0 / (it->key() - offset);
toStyle = it->style();
break;
}
offset = it->key();
fromStyle = it->style();
}
// If either style is 0 we have an invalid case, just stop the animation.
if (!fromStyle || !toStyle) {
updateStateMachine(AnimationStateInputEndAnimation, -1);
return;
}
// Run a cycle of animation.
// We know we will need a new render style, so make one if needed.
if (!animatedStyle)
animatedStyle = RenderStyle::clone(targetStyle);
const TimingFunction* timingFunction = 0;
if (fromStyle->animations() && fromStyle->animations()->size() > 0)
timingFunction = &(fromStyle->animations()->animation(0)->timingFunction());
double prog = progress(scale, offset, timingFunction);
HashSet<int>::const_iterator endProperties = m_keyframes.endProperties();
for (HashSet<int>::const_iterator it = m_keyframes.beginProperties(); it != endProperties; ++it) {
if (blendProperties(this, *it, animatedStyle.get(), fromStyle, toStyle, prog))
setAnimating();
}
}
