| // Copyright 2012 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 "cc/layer_animation_controller.h" |
| |
| #include "cc/active_animation.h" |
| #include "cc/keyframed_animation_curve.h" |
| #include "ui/gfx/transform.h" |
| |
| namespace cc { |
| |
| LayerAnimationController::LayerAnimationController(LayerAnimationControllerClient* client) |
| : m_forceSync(false) |
| , m_client(client) |
| { |
| } |
| |
| LayerAnimationController::~LayerAnimationController() |
| { |
| } |
| |
| scoped_ptr<LayerAnimationController> LayerAnimationController::create(LayerAnimationControllerClient* client) |
| { |
| return make_scoped_ptr(new LayerAnimationController(client)); |
| } |
| |
| void LayerAnimationController::pauseAnimation(int animationId, double timeOffset) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->id() == animationId) |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Paused, timeOffset + m_activeAnimations[i]->startTime()); |
| } |
| } |
| |
| void LayerAnimationController::removeAnimation(int animationId) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size();) { |
| if (m_activeAnimations[i]->id() == animationId) |
| m_activeAnimations.remove(i); |
| else |
| i++; |
| } |
| } |
| |
| void LayerAnimationController::removeAnimation(int animationId, ActiveAnimation::TargetProperty targetProperty) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size();) { |
| if (m_activeAnimations[i]->id() == animationId && m_activeAnimations[i]->targetProperty() == targetProperty) |
| m_activeAnimations.remove(i); |
| else |
| i++; |
| } |
| } |
| |
| // According to render layer backing, these are for testing only. |
| void LayerAnimationController::suspendAnimations(double monotonicTime) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (!m_activeAnimations[i]->isFinished()) |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Paused, monotonicTime); |
| } |
| } |
| |
| // Looking at GraphicsLayerCA, this appears to be the analog to suspendAnimations, which is for testing. |
| void LayerAnimationController::resumeAnimations(double monotonicTime) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::Paused) |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Running, monotonicTime); |
| } |
| } |
| |
| // Ensures that the list of active animations on the main thread and the impl thread |
| // are kept in sync. |
| void LayerAnimationController::pushAnimationUpdatesTo(LayerAnimationController* controllerImpl) |
| { |
| if (m_forceSync) { |
| replaceImplThreadAnimations(controllerImpl); |
| m_forceSync = false; |
| } else { |
| purgeAnimationsMarkedForDeletion(); |
| pushNewAnimationsToImplThread(controllerImpl); |
| |
| // Remove finished impl side animations only after pushing, |
| // and only after the animations are deleted on the main thread |
| // this insures we will never push an animation twice. |
| removeAnimationsCompletedOnMainThread(controllerImpl); |
| |
| pushPropertiesToImplThread(controllerImpl); |
| } |
| } |
| |
| void LayerAnimationController::animate(double monotonicTime, AnimationEventsVector* events) |
| { |
| startAnimationsWaitingForNextTick(monotonicTime, events); |
| startAnimationsWaitingForStartTime(monotonicTime, events); |
| startAnimationsWaitingForTargetAvailability(monotonicTime, events); |
| resolveConflicts(monotonicTime); |
| tickAnimations(monotonicTime); |
| markAnimationsForDeletion(monotonicTime, events); |
| startAnimationsWaitingForTargetAvailability(monotonicTime, events); |
| } |
| |
| void LayerAnimationController::addAnimation(scoped_ptr<ActiveAnimation> animation) |
| { |
| m_activeAnimations.append(animation.Pass()); |
| } |
| |
| ActiveAnimation* LayerAnimationController::getActiveAnimation(int groupId, ActiveAnimation::TargetProperty targetProperty) const |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) |
| if (m_activeAnimations[i]->group() == groupId && m_activeAnimations[i]->targetProperty() == targetProperty) |
| return m_activeAnimations[i]; |
| return 0; |
| } |
| |
| ActiveAnimation* LayerAnimationController::getActiveAnimation(ActiveAnimation::TargetProperty targetProperty) const |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| size_t index = m_activeAnimations.size() - i - 1; |
| if (m_activeAnimations[index]->targetProperty() == targetProperty) |
| return m_activeAnimations[index]; |
| } |
| return 0; |
| } |
| |
| bool LayerAnimationController::hasActiveAnimation() const |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (!m_activeAnimations[i]->isFinished()) |
| return true; |
| } |
| return false; |
| } |
| |
| bool LayerAnimationController::isAnimatingProperty(ActiveAnimation::TargetProperty targetProperty) const |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() != ActiveAnimation::Finished && m_activeAnimations[i]->runState() != ActiveAnimation::Aborted && m_activeAnimations[i]->targetProperty() == targetProperty) |
| return true; |
| } |
| return false; |
| } |
| |
| void LayerAnimationController::notifyAnimationStarted(const AnimationEvent& event) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->group() == event.groupId && m_activeAnimations[i]->targetProperty() == event.targetProperty && m_activeAnimations[i]->needsSynchronizedStartTime()) { |
| m_activeAnimations[i]->setNeedsSynchronizedStartTime(false); |
| m_activeAnimations[i]->setStartTime(event.monotonicTime); |
| return; |
| } |
| } |
| } |
| |
| void LayerAnimationController::setClient(LayerAnimationControllerClient* client) |
| { |
| m_client = client; |
| } |
| |
| void LayerAnimationController::pushNewAnimationsToImplThread(LayerAnimationController* controllerImpl) const |
| { |
| // Any new animations owned by the main thread's controller are cloned and adde to the impl thread's controller. |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| // If the animation is already running on the impl thread, there is no need to copy it over. |
| if (controllerImpl->getActiveAnimation(m_activeAnimations[i]->group(), m_activeAnimations[i]->targetProperty())) |
| continue; |
| |
| // If the animation is not running on the impl thread, it does not necessarily mean that it needs |
| // to be copied over and started; it may have already finished. In this case, the impl thread animation |
| // will have already notified that it has started and the main thread animation will no longer need |
| // a synchronized start time. |
| if (!m_activeAnimations[i]->needsSynchronizedStartTime()) |
| continue; |
| |
| // The new animation should be set to run as soon as possible. |
| ActiveAnimation::RunState initialRunState = ActiveAnimation::WaitingForTargetAvailability; |
| double startTime = 0; |
| scoped_ptr<ActiveAnimation> toAdd(m_activeAnimations[i]->cloneAndInitialize(ActiveAnimation::ControllingInstance, initialRunState, startTime)); |
| DCHECK(!toAdd->needsSynchronizedStartTime()); |
| controllerImpl->addAnimation(toAdd.Pass()); |
| } |
| } |
| |
| void LayerAnimationController::removeAnimationsCompletedOnMainThread(LayerAnimationController* controllerImpl) const |
| { |
| // Delete all impl thread animations for which there is no corresponding main thread animation. |
| // Each iteration, controller->m_activeAnimations.size() is decremented or i is incremented |
| // guaranteeing progress towards loop termination. |
| for (size_t i = 0; i < controllerImpl->m_activeAnimations.size();) { |
| ActiveAnimation* current = getActiveAnimation(controllerImpl->m_activeAnimations[i]->group(), controllerImpl->m_activeAnimations[i]->targetProperty()); |
| if (!current) |
| controllerImpl->m_activeAnimations.remove(i); |
| else |
| i++; |
| } |
| } |
| |
| void LayerAnimationController::pushPropertiesToImplThread(LayerAnimationController* controllerImpl) const |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| ActiveAnimation* currentImpl = controllerImpl->getActiveAnimation(m_activeAnimations[i]->group(), m_activeAnimations[i]->targetProperty()); |
| if (currentImpl) |
| m_activeAnimations[i]->pushPropertiesTo(currentImpl); |
| } |
| } |
| |
| void LayerAnimationController::startAnimationsWaitingForNextTick(double monotonicTime, AnimationEventsVector* events) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::WaitingForNextTick) { |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Running, monotonicTime); |
| if (!m_activeAnimations[i]->hasSetStartTime()) |
| m_activeAnimations[i]->setStartTime(monotonicTime); |
| if (events) |
| events->push_back(AnimationEvent(AnimationEvent::Started, m_client->id(), m_activeAnimations[i]->group(), m_activeAnimations[i]->targetProperty(), monotonicTime)); |
| } |
| } |
| } |
| |
| void LayerAnimationController::startAnimationsWaitingForStartTime(double monotonicTime, AnimationEventsVector* events) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::WaitingForStartTime && m_activeAnimations[i]->startTime() <= monotonicTime) { |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Running, monotonicTime); |
| if (events) |
| events->push_back(AnimationEvent(AnimationEvent::Started, m_client->id(), m_activeAnimations[i]->group(), m_activeAnimations[i]->targetProperty(), monotonicTime)); |
| } |
| } |
| } |
| |
| void LayerAnimationController::startAnimationsWaitingForTargetAvailability(double monotonicTime, AnimationEventsVector* events) |
| { |
| // First collect running properties. |
| TargetProperties blockedProperties; |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::Running || m_activeAnimations[i]->runState() == ActiveAnimation::Finished) |
| blockedProperties.insert(m_activeAnimations[i]->targetProperty()); |
| } |
| |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::WaitingForTargetAvailability) { |
| // Collect all properties for animations with the same group id (they should all also be in the list of animations). |
| TargetProperties enqueuedProperties; |
| enqueuedProperties.insert(m_activeAnimations[i]->targetProperty()); |
| for (size_t j = i + 1; j < m_activeAnimations.size(); ++j) { |
| if (m_activeAnimations[i]->group() == m_activeAnimations[j]->group()) |
| enqueuedProperties.insert(m_activeAnimations[j]->targetProperty()); |
| } |
| |
| // Check to see if intersection of the list of properties affected by the group and the list of currently |
| // blocked properties is null. In any case, the group's target properties need to be added to the list |
| // of blocked properties. |
| bool nullIntersection = true; |
| for (TargetProperties::iterator pIter = enqueuedProperties.begin(); pIter != enqueuedProperties.end(); ++pIter) { |
| if (!blockedProperties.insert(*pIter).second) |
| nullIntersection = false; |
| } |
| |
| // If the intersection is null, then we are free to start the animations in the group. |
| if (nullIntersection) { |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Running, monotonicTime); |
| if (!m_activeAnimations[i]->hasSetStartTime()) |
| m_activeAnimations[i]->setStartTime(monotonicTime); |
| if (events) |
| events->push_back(AnimationEvent(AnimationEvent::Started, m_client->id(), m_activeAnimations[i]->group(), m_activeAnimations[i]->targetProperty(), monotonicTime)); |
| for (size_t j = i + 1; j < m_activeAnimations.size(); ++j) { |
| if (m_activeAnimations[i]->group() == m_activeAnimations[j]->group()) { |
| m_activeAnimations[j]->setRunState(ActiveAnimation::Running, monotonicTime); |
| if (!m_activeAnimations[j]->hasSetStartTime()) |
| m_activeAnimations[j]->setStartTime(monotonicTime); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| void LayerAnimationController::resolveConflicts(double monotonicTime) |
| { |
| // Find any animations that are animating the same property and resolve the |
| // confict. We could eventually blend, but for now we'll just abort the |
| // previous animation (where 'previous' means: (1) has a prior start time or |
| // (2) has an equal start time, but was added to the queue earlier, i.e., |
| // has a lower index in m_activeAnimations). |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::Running) { |
| for (size_t j = i + 1; j < m_activeAnimations.size(); ++j) { |
| if (m_activeAnimations[j]->runState() == ActiveAnimation::Running && m_activeAnimations[i]->targetProperty() == m_activeAnimations[j]->targetProperty()) { |
| if (m_activeAnimations[i]->startTime() > m_activeAnimations[j]->startTime()) |
| m_activeAnimations[j]->setRunState(ActiveAnimation::Aborted, monotonicTime); |
| else |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Aborted, monotonicTime); |
| } |
| } |
| } |
| } |
| } |
| |
| void LayerAnimationController::markAnimationsForDeletion(double monotonicTime, AnimationEventsVector* events) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); i++) { |
| int groupId = m_activeAnimations[i]->group(); |
| bool allAnimsWithSameIdAreFinished = false; |
| // If an animation is finished, and not already marked for deletion, |
| // Find out if all other animations in the same group are also finished. |
| if (m_activeAnimations[i]->isFinished()) { |
| allAnimsWithSameIdAreFinished = true; |
| for (size_t j = 0; j < m_activeAnimations.size(); ++j) { |
| if (groupId == m_activeAnimations[j]->group() && !m_activeAnimations[j]->isFinished()) { |
| allAnimsWithSameIdAreFinished = false; |
| break; |
| } |
| } |
| } |
| if (allAnimsWithSameIdAreFinished) { |
| // We now need to remove all animations with the same group id as groupId |
| // (and send along animation finished notifications, if necessary). |
| for (size_t j = i; j < m_activeAnimations.size(); j++) { |
| if (groupId == m_activeAnimations[j]->group()) { |
| if (events) |
| events->push_back(AnimationEvent(AnimationEvent::Finished, m_client->id(), m_activeAnimations[j]->group(), m_activeAnimations[j]->targetProperty(), monotonicTime)); |
| m_activeAnimations[j]->setRunState(ActiveAnimation::WaitingForDeletion, monotonicTime); |
| } |
| } |
| } |
| } |
| } |
| |
| void LayerAnimationController::purgeAnimationsMarkedForDeletion() |
| { |
| for (size_t i = 0; i < m_activeAnimations.size();) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::WaitingForDeletion) |
| m_activeAnimations.remove(i); |
| else |
| i++; |
| } |
| } |
| |
| void LayerAnimationController::replaceImplThreadAnimations(LayerAnimationController* controllerImpl) const |
| { |
| controllerImpl->m_activeAnimations.clear(); |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| scoped_ptr<ActiveAnimation> toAdd; |
| if (m_activeAnimations[i]->needsSynchronizedStartTime()) { |
| // We haven't received an animation started notification yet, so it |
| // is important that we add it in a 'waiting' and not 'running' state. |
| ActiveAnimation::RunState initialRunState = ActiveAnimation::WaitingForTargetAvailability; |
| double startTime = 0; |
| toAdd = m_activeAnimations[i]->cloneAndInitialize(ActiveAnimation::ControllingInstance, initialRunState, startTime).Pass(); |
| } else |
| toAdd = m_activeAnimations[i]->clone(ActiveAnimation::ControllingInstance).Pass(); |
| |
| controllerImpl->addAnimation(toAdd.Pass()); |
| } |
| } |
| |
| void LayerAnimationController::tickAnimations(double monotonicTime) |
| { |
| for (size_t i = 0; i < m_activeAnimations.size(); ++i) { |
| if (m_activeAnimations[i]->runState() == ActiveAnimation::Running || m_activeAnimations[i]->runState() == ActiveAnimation::Paused) { |
| double trimmed = m_activeAnimations[i]->trimTimeToCurrentIteration(monotonicTime); |
| |
| // Animation assumes its initial value until it gets the synchronized start time |
| // from the impl thread and can start ticking. |
| if (m_activeAnimations[i]->needsSynchronizedStartTime()) |
| trimmed = 0; |
| |
| switch (m_activeAnimations[i]->targetProperty()) { |
| |
| case ActiveAnimation::Transform: { |
| const TransformAnimationCurve* transformAnimationCurve = m_activeAnimations[i]->curve()->toTransformAnimationCurve(); |
| const gfx::Transform matrix = transformAnimationCurve->getValue(trimmed).toTransform(); |
| if (m_activeAnimations[i]->isFinishedAt(monotonicTime)) |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Finished, monotonicTime); |
| |
| m_client->setTransformFromAnimation(matrix); |
| break; |
| } |
| |
| case ActiveAnimation::Opacity: { |
| const FloatAnimationCurve* floatAnimationCurve = m_activeAnimations[i]->curve()->toFloatAnimationCurve(); |
| const float opacity = floatAnimationCurve->getValue(trimmed); |
| if (m_activeAnimations[i]->isFinishedAt(monotonicTime)) |
| m_activeAnimations[i]->setRunState(ActiveAnimation::Finished, monotonicTime); |
| |
| m_client->setOpacityFromAnimation(opacity); |
| break; |
| } |
| |
| // Do nothing for sentinel value. |
| case ActiveAnimation::TargetPropertyEnumSize: |
| NOTREACHED(); |
| } |
| } |
| } |
| } |
| |
| } // namespace cc |
