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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "platform/scroll/ScrollAnimatorCompositorCoordinator.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "platform/graphics/GraphicsLayer.h"
#include "platform/scroll/ScrollableArea.h"
#include "public/platform/Platform.h"
#include "public/platform/WebCompositorAnimationPlayer.h"
#include "public/platform/WebCompositorAnimationTimeline.h"
#include "public/platform/WebCompositorSupport.h"
namespace blink {
ScrollAnimatorCompositorCoordinator::ScrollAnimatorCompositorCoordinator()
: m_compositorAnimationAttachedToLayerId(0)
, m_runState(RunState::Idle)
, m_compositorAnimationId(0)
, m_compositorAnimationGroupId(0)
{
if (RuntimeEnabledFeatures::compositorAnimationTimelinesEnabled()) {
ASSERT(Platform::current()->compositorSupport());
m_compositorPlayer = adoptPtr(Platform::current()->compositorSupport()->createAnimationPlayer());
ASSERT(m_compositorPlayer);
m_compositorPlayer->setAnimationDelegate(this);
}
}
ScrollAnimatorCompositorCoordinator::~ScrollAnimatorCompositorCoordinator()
{
if (m_compositorPlayer) {
m_compositorPlayer->setAnimationDelegate(nullptr);
m_compositorPlayer.clear();
}
}
void ScrollAnimatorCompositorCoordinator::resetAnimationState()
{
m_runState = RunState::Idle;
m_compositorAnimationId = 0;
m_compositorAnimationGroupId = 0;
}
bool ScrollAnimatorCompositorCoordinator::hasAnimationThatRequiresService() const
{
switch (m_runState) {
case RunState::Idle:
case RunState::RunningOnCompositor:
return false;
case RunState::WaitingToSendToCompositor:
case RunState::RunningOnMainThread:
case RunState::RunningOnCompositorButNeedsUpdate:
case RunState::WaitingToCancelOnCompositor:
return true;
}
ASSERT_NOT_REACHED();
return false;
}
bool ScrollAnimatorCompositorCoordinator::addAnimation(
PassOwnPtr<WebCompositorAnimation> animation)
{
if (m_compositorPlayer) {
if (m_compositorPlayer->isLayerAttached()) {
m_compositorPlayer->addAnimation(animation.leakPtr());
return true;
}
} else {
return scrollableArea()->layerForScrolling()->addAnimation(animation);
}
return false;
}
void ScrollAnimatorCompositorCoordinator::removeAnimation()
{
if (m_compositorPlayer) {
if (m_compositorPlayer->isLayerAttached())
m_compositorPlayer->removeAnimation(m_compositorAnimationId);
} else {
if (GraphicsLayer* layer = scrollableArea()->layerForScrolling())
layer->removeAnimation(m_compositorAnimationId);
}
}
void ScrollAnimatorCompositorCoordinator::abortAnimation()
{
if (m_compositorPlayer) {
if (m_compositorPlayer->isLayerAttached())
m_compositorPlayer->abortAnimation(m_compositorAnimationId);
} else {
if (GraphicsLayer* layer = scrollableArea()->layerForScrolling())
layer->abortAnimation(m_compositorAnimationId);
}
}
void ScrollAnimatorCompositorCoordinator::cancelAnimation()
{
switch (m_runState) {
case RunState::Idle:
case RunState::WaitingToCancelOnCompositor:
break;
case RunState::WaitingToSendToCompositor:
if (m_compositorAnimationId) {
// We still have a previous animation running on the compositor.
m_runState = RunState::WaitingToCancelOnCompositor;
} else {
resetAnimationState();
}
break;
case RunState::RunningOnMainThread:
resetAnimationState();
break;
case RunState::RunningOnCompositorButNeedsUpdate:
case RunState::RunningOnCompositor:
m_runState = RunState::WaitingToCancelOnCompositor;
// Get serviced the next time compositor updates are allowed.
scrollableArea()->registerForAnimation();
}
}
void ScrollAnimatorCompositorCoordinator::compositorAnimationFinished(
int groupId)
{
if (m_compositorAnimationGroupId != groupId)
return;
m_compositorAnimationId = 0;
m_compositorAnimationGroupId = 0;
switch (m_runState) {
case RunState::Idle:
case RunState::RunningOnMainThread:
ASSERT_NOT_REACHED();
break;
case RunState::WaitingToSendToCompositor:
break;
case RunState::RunningOnCompositor:
case RunState::RunningOnCompositorButNeedsUpdate:
case RunState::WaitingToCancelOnCompositor:
resetAnimationState();
}
}
void ScrollAnimatorCompositorCoordinator::reattachCompositorPlayerIfNeeded(
WebCompositorAnimationTimeline* timeline)
{
int compositorAnimationAttachedToLayerId = 0;
if (scrollableArea()->layerForScrolling())
compositorAnimationAttachedToLayerId = scrollableArea()->layerForScrolling()->platformLayer()->id();
if (compositorAnimationAttachedToLayerId != m_compositorAnimationAttachedToLayerId) {
if (m_compositorPlayer && timeline) {
// Detach from old layer (if any).
if (m_compositorAnimationAttachedToLayerId) {
if (m_compositorPlayer->isLayerAttached())
m_compositorPlayer->detachLayer();
timeline->playerDestroyed(*this);
}
// Attach to new layer (if any).
if (compositorAnimationAttachedToLayerId) {
ASSERT(!m_compositorPlayer->isLayerAttached());
timeline->playerAttached(*this);
m_compositorPlayer->attachLayer(
scrollableArea()->layerForScrolling()->platformLayer());
}
m_compositorAnimationAttachedToLayerId = compositorAnimationAttachedToLayerId;
}
}
}
void ScrollAnimatorCompositorCoordinator::notifyAnimationStarted(
double monotonicTime, int group)
{
}
void ScrollAnimatorCompositorCoordinator::notifyAnimationFinished(
double monotonicTime, int group)
{
notifyCompositorAnimationFinished(group);
}
void ScrollAnimatorCompositorCoordinator::notifyAnimationAborted(
double monotonicTime, int group)
{
// An animation aborted by the compositor is treated as a finished
// animation.
notifyCompositorAnimationFinished(group);
}
WebCompositorAnimationPlayer* ScrollAnimatorCompositorCoordinator::compositorPlayer() const
{
return m_compositorPlayer.get();
}
} // namespace blink
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