void AnimationPlayer::preCommit(bool startOnCompositor)
{
if (m_compositorState && m_compositorState->pendingAction == Start) {
// Still waiting for a start time.
return;
}
bool softChange = m_compositorState && (paused() || m_compositorState->playbackRate != m_playbackRate);
bool hardChange = m_compositorState && (m_compositorState->sourceChanged || (m_compositorState->startTime != m_startTime && !std::isnan(m_compositorState->startTime) && !std::isnan(m_startTime)));
// FIXME: softChange && !hardChange should generate a Pause/ThenStart,
// not a Cancel, but we can't communicate these to the compositor yet.
bool changed = softChange || hardChange;
bool shouldCancel = (!playing() && m_compositorState) || changed;
bool shouldStart = playing() && (!m_compositorState || changed);
if (shouldCancel) {
cancelAnimationOnCompositor();
m_compositorState = nullptr;
}
if (!shouldStart) {
m_currentTimePending = false;
}
if (shouldStart && startOnCompositor && maybeStartAnimationOnCompositor()) {
m_compositorState = adoptPtr(new CompositorState(*this));
}
}
bool Animation::preCommit(int compositorGroup, bool startOnCompositor)
{
PlayStateUpdateScope updateScope(*this, TimingUpdateOnDemand, DoNotSetCompositorPending);
bool softChange = m_compositorState && (paused() || m_compositorState->playbackRate != m_playbackRate);
bool hardChange = m_compositorState && (m_compositorState->effectChanged || m_compositorState->startTime != m_startTime);
// FIXME: softChange && !hardChange should generate a Pause/ThenStart,
// not a Cancel, but we can't communicate these to the compositor yet.
bool changed = softChange || hardChange;
bool shouldCancel = (!playing() && m_compositorState) || changed;
bool shouldStart = playing() && (!m_compositorState || changed);
if (startOnCompositor && shouldCancel && shouldStart && m_compositorState && m_compositorState->pendingAction == Start) {
// Restarting but still waiting for a start time.
return false;
}
if (shouldCancel) {
cancelAnimationOnCompositor();
m_compositorState = nullptr;
}
ASSERT(!m_compositorState || !std::isnan(m_compositorState->startTime));
if (!shouldStart) {
m_currentTimePending = false;
}
if (shouldStart) {
m_compositorGroup = compositorGroup;
if (startOnCompositor) {
if (isCandidateForAnimationOnCompositor())
createCompositorPlayer();
if (maybeStartAnimationOnCompositor())
m_compositorState = adoptPtr(new CompositorState(*this));
else
cancelIncompatibleAnimationsOnCompositor();
}
}
return true;
}
