double AnimationControllerPrivate::updateAnimations(SetChanged callSetChanged/* = DoNotCallSetChanged*/)
{
double timeToNextService = -1;
bool calledSetChanged = false;
RenderObjectAnimationMap::const_iterator animationsEnd = m_compositeAnimations.end();
for (RenderObjectAnimationMap::const_iterator it = m_compositeAnimations.begin(); it != animationsEnd; ++it) {
CompositeAnimation* compAnim = it->second.get();
if (!compAnim->suspended() && compAnim->hasAnimations()) {
double t = compAnim->timeToNextService();
if (t != -1 && (t < timeToNextService || timeToNextService == -1))
timeToNextService = t;
if (!timeToNextService) {
if (callSetChanged == CallSetChanged) {
Node* node = it->first->node();
ASSERT(!node || (node->document() && !node->document()->inPageCache()));
node->setNeedsStyleRecalc(SyntheticStyleChange);
calledSetChanged = true;
}
else
break;
}
}
}
if (calledSetChanged)
m_frame->document()->updateStyleIfNeeded();
return timeToNextService;
}
bool AnimationControllerPrivate::clear(RenderObject* renderer)
{
// Return false if we didn't do anything OR we are suspended (so we don't try to
// do a setChanged() when suspended
CompositeAnimation* animation = m_compositeAnimations.take(renderer);
if (!animation)
return false;
animation->resetTransitions(renderer);
bool wasSuspended = animation->suspended();
delete animation;
return !wasSuspended;
}
void AnimationControllerPrivate::updateAnimationTimer(bool callSetChanged/* = false*/)
{
double needsService = -1;
bool calledSetChanged = false;
RenderObjectAnimationMap::const_iterator animationsEnd = m_compositeAnimations.end();
for (RenderObjectAnimationMap::const_iterator it = m_compositeAnimations.begin(); it != animationsEnd; ++it) {
CompositeAnimation* compAnim = it->second.get();
if (!compAnim->suspended() && compAnim->hasAnimations()) {
double t = compAnim->timeToNextService();
if (t != -1 && (t < needsService || needsService == -1))
needsService = t;
if (needsService == 0) {
if (callSetChanged) {
Node* node = it->first->node();
ASSERT(!node || (node->document() && !node->document()->inPageCache()));
node->setNeedsStyleRecalc(SyntheticStyleChange);
calledSetChanged = true;
}
else
break;
}
}
}
if (calledSetChanged)
m_frame->document()->updateStyleIfNeeded();
// If we want service immediately, we start a repeating timer to reduce the overhead of starting
if (needsService == 0) {
if (!m_animationTimer.isActive() || m_animationTimer.repeatInterval() == 0)
m_animationTimer.startRepeating(cAnimationTimerDelay);
return;
}
// If we don't need service, we want to make sure the timer is no longer running
if (needsService < 0) {
if (m_animationTimer.isActive())
m_animationTimer.stop();
return;
}
// Otherwise, we want to start a one-shot timer so we get here again
if (m_animationTimer.isActive())
m_animationTimer.stop();
m_animationTimer.startOneShot(needsService);
}
void AnimationControllerPrivate::updateAnimationTimer()
{
bool animating = false;
RenderObjectAnimationMap::const_iterator animationsEnd = m_compositeAnimations.end();
for (RenderObjectAnimationMap::const_iterator it = m_compositeAnimations.begin(); it != animationsEnd; ++it) {
CompositeAnimation* compAnim = it->second;
if (!compAnim->suspended() && compAnim->animating()) {
animating = true;
break;
}
}
if (animating) {
if (!m_animationTimer.isActive())
m_animationTimer.startRepeating(cAnimationTimerDelay);
} else if (m_animationTimer.isActive())
m_animationTimer.stop();
}
void AnimationControllerPrivate::animationTimerFired(Timer<AnimationControllerPrivate>* timer)
{
// When the timer fires, all we do is call setChanged on all DOM nodes with running animations and then do an immediate
// updateRendering. It will then call back to us with new information.
bool animating = false;
RenderObjectAnimationMap::const_iterator animationsEnd = m_compositeAnimations.end();
for (RenderObjectAnimationMap::const_iterator it = m_compositeAnimations.begin(); it != animationsEnd; ++it) {
CompositeAnimation* compAnim = it->second;
if (!compAnim->suspended() && compAnim->animating()) {
animating = true;
compAnim->setAnimating(false);
Node* node = it->first->element();
ASSERT(!node || (node->document() && !node->document()->inPageCache()));
node->setChanged(AnimationStyleChange);
}
}
m_frame->document()->updateRendering();
updateAnimationTimer();
}
