bool KeyframeEffect::isCandidateForAnimationOnCompositor(double animationPlaybackRate) const
{
// Do not put transforms on compositor if more than one of them are defined
// in computed style because they need to be explicitly ordered
if (!model()
|| !m_target
|| (m_target->computedStyle() && m_target->computedStyle()->hasMotionPath())
|| hasMultipleTransformProperties())
return false;
return CompositorAnimations::instance()->isCandidateForAnimationOnCompositor(specifiedTiming(), *m_target, animation(), *model(), animationPlaybackRate);
}
// Returns true if transform, translate, rotate or scale is composited
// and a motion path or other transform properties
// has been introduced on the element
bool KeyframeEffectReadOnly::hasIncompatibleStyle() {
if (!m_target->computedStyle())
return false;
bool affectsTransform =
animation()->affects(*m_target, CSSPropertyTransform) ||
animation()->affects(*m_target, CSSPropertyScale) ||
animation()->affects(*m_target, CSSPropertyRotate) ||
animation()->affects(*m_target, CSSPropertyTranslate);
if (animation()->hasActiveAnimationsOnCompositor()) {
if (m_target->computedStyle()->hasOffset() && affectsTransform)
return true;
return hasMultipleTransformProperties();
}
return false;
}
