--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/animation/CompositeAnimation.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,549 @@
+/*
+ * Copyright (C) 2007 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "CompositeAnimation.h"
+
+#include "AnimationControllerPrivate.h"
+#include "CSSPropertyNames.h"
+#include "ImplicitAnimation.h"
+#include "KeyframeAnimation.h"
+#include "RenderObject.h"
+#include "RenderStyle.h"
+
+namespace WebCore {
+
+CompositeAnimation::~CompositeAnimation()
+{
+ // Toss the refs to all animations
+ m_transitions.clear();
+ m_keyframeAnimations.clear();
+}
+
+void CompositeAnimation::clearRenderer()
+{
+ if (!m_transitions.isEmpty()) {
+ // Clear the renderers from all running animations, in case we are in the middle of
+ // an animation callback (see https://bugs.webkit.org/show_bug.cgi?id=22052)
+ CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
+ ImplicitAnimation* transition = it->second.get();
+ transition->clearRenderer();
+ }
+ }
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ KeyframeAnimation* anim = it->second.get();
+ anim->clearRenderer();
+ }
+ }
+}
+
+void CompositeAnimation::updateTransitions(RenderObject* renderer, RenderStyle* currentStyle, RenderStyle* targetStyle)
+{
+ // If currentStyle is null or there are no old or new transitions, just skip it
+ if (!currentStyle || (!targetStyle->transitions() && m_transitions.isEmpty()))
+ return;
+
+ // Mark all existing transitions as no longer active. We will mark the still active ones
+ // in the next loop and then toss the ones that didn't get marked.
+ CSSPropertyTransitionsMap::const_iterator end = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != end; ++it)
+ it->second->setActive(false);
+
+ RefPtr<RenderStyle> modifiedCurrentStyle;
+
+ // Check to see if we need to update the active transitions
+ if (targetStyle->transitions()) {
+ for (size_t i = 0; i < targetStyle->transitions()->size(); ++i) {
+ const Animation* anim = targetStyle->transitions()->animation(i);
+ bool isActiveTransition = anim->duration() || anim->delay() > 0;
+
+ int prop = anim->property();
+
+ if (prop == cAnimateNone)
+ continue;
+
+ bool all = prop == cAnimateAll;
+
+ // Handle both the 'all' and single property cases. For the single prop case, we make only one pass
+ // through the loop.
+ for (int propertyIndex = 0; propertyIndex < AnimationBase::getNumProperties(); ++propertyIndex) {
+ if (all) {
+ // Get the next property which is not a shorthand.
+ bool isShorthand;
+ prop = AnimationBase::getPropertyAtIndex(propertyIndex, isShorthand);
+ if (isShorthand)
+ continue;
+ }
+
+ // ImplicitAnimations are always hashed by actual properties, never cAnimateAll
+ ASSERT(prop >= firstCSSProperty && prop < (firstCSSProperty + numCSSProperties));
+
+ // If there is a running animation for this property, the transition is overridden
+ // and we have to use the unanimatedStyle from the animation. We do the test
+ // against the unanimated style here, but we "override" the transition later.
+ RefPtr<KeyframeAnimation> keyframeAnim = getAnimationForProperty(prop);
+ RenderStyle* fromStyle = keyframeAnim ? keyframeAnim->unanimatedStyle() : currentStyle;
+
+ // See if there is a current transition for this prop
+ ImplicitAnimation* implAnim = m_transitions.get(prop).get();
+ bool equal = true;
+
+ if (implAnim) {
+ // If we are post active don't bother setting the active flag. This will cause
+ // this animation to get removed at the end of this function.
+ if (!implAnim->postActive())
+ implAnim->setActive(true);
+
+ // This might be a transition that is just finishing. That would be the case
+ // if it were postActive. But we still need to check for equality because
+ // it could be just finishing AND changing to a new goal state.
+ //
+ // This implAnim might also not be an already running transition. It might be
+ // newly added to the list in a previous iteration. This would happen if
+ // you have both an explicit transition-property and 'all' in the same
+ // list. In this case, the latter one overrides the earlier one, so we
+ // behave as though this is a running animation being replaced.
+ if (!implAnim->isTargetPropertyEqual(prop, targetStyle)) {
+ #if USE(ACCELERATED_COMPOSITING)
+ // For accelerated animations we need to return a new RenderStyle with the _current_ value
+ // of the property, so that restarted transitions use the correct starting point.
+ if (AnimationBase::animationOfPropertyIsAccelerated(prop) && implAnim->isAccelerated()) {
+ if (!modifiedCurrentStyle)
+ modifiedCurrentStyle = RenderStyle::clone(currentStyle);
+
+ implAnim->blendPropertyValueInStyle(prop, modifiedCurrentStyle.get());
+ }
+ #endif
+ m_transitions.remove(prop);
+ equal = false;
+ }
+ } else {
+ // We need to start a transition if it is active and the properties don't match
+ equal = !isActiveTransition || AnimationBase::propertiesEqual(prop, fromStyle, targetStyle);
+ }
+
+ // We can be in this loop with an inactive transition (!isActiveTransition). We need
+ // to do that to check to see if we are canceling a transition. But we don't want to
+ // start one of the inactive transitions. So short circuit that here. (See
+ // <https://bugs.webkit.org/show_bug.cgi?id=24787>
+ if (!equal && isActiveTransition) {
+ // Add the new transition
+ m_transitions.set(prop, ImplicitAnimation::create(const_cast<Animation*>(anim), prop, renderer, this, modifiedCurrentStyle ? modifiedCurrentStyle.get() : fromStyle));
+ }
+
+ // We only need one pass for the single prop case
+ if (!all)
+ break;
+ }
+ }
+ }
+
+ // Make a list of transitions to be removed
+ Vector<int> toBeRemoved;
+ end = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != end; ++it) {
+ ImplicitAnimation* anim = it->second.get();
+ if (!anim->active())
+ toBeRemoved.append(anim->animatingProperty());
+ }
+
+ // Now remove the transitions from the list
+ for (size_t j = 0; j < toBeRemoved.size(); ++j)
+ m_transitions.remove(toBeRemoved[j]);
+}
+
+void CompositeAnimation::updateKeyframeAnimations(RenderObject* renderer, RenderStyle* currentStyle, RenderStyle* targetStyle)
+{
+ // Nothing to do if we don't have any animations, and didn't have any before
+ if (m_keyframeAnimations.isEmpty() && !targetStyle->hasAnimations())
+ return;
+
+ m_keyframeAnimations.checkConsistency();
+
+ AnimationNameMap::const_iterator kfend = m_keyframeAnimations.end();
+
+ if (currentStyle && currentStyle->hasAnimations() && targetStyle->hasAnimations() && *(currentStyle->animations()) == *(targetStyle->animations())) {
+ // The current and target animations are the same so we just need to toss any
+ // animation which is finished (postActive).
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != kfend; ++it) {
+ if (it->second->postActive())
+ it->second->setIndex(-1);
+ }
+ } else {
+ // Mark all existing animations as no longer active.
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != kfend; ++it)
+ it->second->setIndex(-1);
+
+ // Toss the animation order map.
+ m_keyframeAnimationOrderMap.clear();
+
+ DEFINE_STATIC_LOCAL(const AtomicString, none, ("none"));
+
+ // Now mark any still active animations as active and add any new animations.
+ if (targetStyle->animations()) {
+ int numAnims = targetStyle->animations()->size();
+ for (int i = 0; i < numAnims; ++i) {
+ const Animation* anim = targetStyle->animations()->animation(i);
+ AtomicString animationName(anim->name());
+
+ if (!anim->isValidAnimation())
+ continue;
+
+ // See if there is a current animation for this name.
+ RefPtr<KeyframeAnimation> keyframeAnim = m_keyframeAnimations.get(animationName.impl());
+
+ if (keyframeAnim) {
+ // If this animation is postActive, skip it so it gets removed at the end of this function.
+ if (keyframeAnim->postActive())
+ continue;
+
+ // This one is still active.
+
+ // Animations match, but play states may differ. Update if needed.
+ keyframeAnim->updatePlayState(anim->playState() == AnimPlayStatePlaying);
+
+ // Set the saved animation to this new one, just in case the play state has changed.
+ keyframeAnim->setAnimation(anim);
+ keyframeAnim->setIndex(i);
+ } else if ((anim->duration() || anim->delay()) && anim->iterationCount() && animationName != none) {
+ keyframeAnim = KeyframeAnimation::create(const_cast<Animation*>(anim), renderer, i, this, targetStyle);
+ m_keyframeAnimations.set(keyframeAnim->name().impl(), keyframeAnim);
+ }
+
+ // Add this to the animation order map.
+ if (keyframeAnim)
+ m_keyframeAnimationOrderMap.append(keyframeAnim->name().impl());
+ }
+ }
+ }
+
+ // Make a list of animations to be removed.
+ Vector<AtomicStringImpl*> animsToBeRemoved;
+ kfend = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != kfend; ++it) {
+ KeyframeAnimation* keyframeAnim = it->second.get();
+ if (keyframeAnim->index() < 0)
+ animsToBeRemoved.append(keyframeAnim->name().impl());
+ }
+
+ // Now remove the animations from the list.
+ for (size_t j = 0; j < animsToBeRemoved.size(); ++j)
+ m_keyframeAnimations.remove(animsToBeRemoved[j]);
+}
+
+PassRefPtr<RenderStyle> CompositeAnimation::animate(RenderObject* renderer, RenderStyle* currentStyle, RenderStyle* targetStyle)
+{
+ RefPtr<RenderStyle> resultStyle;
+
+ // We don't do any transitions if we don't have a currentStyle (on startup).
+ updateTransitions(renderer, currentStyle, targetStyle);
+ updateKeyframeAnimations(renderer, currentStyle, targetStyle);
+ m_keyframeAnimations.checkConsistency();
+
+ if (currentStyle) {
+ // Now that we have transition objects ready, let them know about the new goal state. We want them
+ // to fill in a RenderStyle*& only if needed.
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator end = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != end; ++it) {
+ if (ImplicitAnimation* anim = it->second.get())
+ anim->animate(this, renderer, currentStyle, targetStyle, resultStyle);
+ }
+ }
+ }
+
+ // Now that we have animation objects ready, let them know about the new goal state. We want them
+ // to fill in a RenderStyle*& only if needed.
+ for (Vector<AtomicStringImpl*>::const_iterator it = m_keyframeAnimationOrderMap.begin(); it != m_keyframeAnimationOrderMap.end(); ++it) {
+ RefPtr<KeyframeAnimation> keyframeAnim = m_keyframeAnimations.get(*it);
+ if (keyframeAnim)
+ keyframeAnim->animate(this, renderer, currentStyle, targetStyle, resultStyle);
+ }
+
+ return resultStyle ? resultStyle.release() : targetStyle;
+}
+
+PassRefPtr<RenderStyle> CompositeAnimation::getAnimatedStyle() const
+{
+ RefPtr<RenderStyle> resultStyle;
+ CSSPropertyTransitionsMap::const_iterator end = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != end; ++it) {
+ if (ImplicitAnimation* implicitAnimation = it->second.get())
+ implicitAnimation->getAnimatedStyle(resultStyle);
+ }
+
+ m_keyframeAnimations.checkConsistency();
+
+ for (Vector<AtomicStringImpl*>::const_iterator it = m_keyframeAnimationOrderMap.begin(); it != m_keyframeAnimationOrderMap.end(); ++it) {
+ RefPtr<KeyframeAnimation> keyframeAnimation = m_keyframeAnimations.get(*it);
+ if (keyframeAnimation)
+ keyframeAnimation->getAnimatedStyle(resultStyle);
+ }
+
+ return resultStyle;
+}
+
+// "animating" means that something is running that requires the timer to keep firing
+void CompositeAnimation::setAnimating(bool animating)
+{
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
+ ImplicitAnimation* transition = it->second.get();
+ transition->setAnimating(animating);
+ }
+ }
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ KeyframeAnimation* anim = it->second.get();
+ anim->setAnimating(animating);
+ }
+ }
+}
+
+double CompositeAnimation::timeToNextService() const
+{
+ // Returns the time at which next service is required. -1 means no service is required. 0 means
+ // service is required now, and > 0 means service is required that many seconds in the future.
+ double minT = -1;
+
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
+ ImplicitAnimation* transition = it->second.get();
+ double t = transition ? transition->timeToNextService() : -1;
+ if (t < minT || minT == -1)
+ minT = t;
+ if (minT == 0)
+ return 0;
+ }
+ }
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ KeyframeAnimation* animation = it->second.get();
+ double t = animation ? animation->timeToNextService() : -1;
+ if (t < minT || minT == -1)
+ minT = t;
+ if (minT == 0)
+ return 0;
+ }
+ }
+
+ return minT;
+}
+
+PassRefPtr<KeyframeAnimation> CompositeAnimation::getAnimationForProperty(int property) const
+{
+ RefPtr<KeyframeAnimation> retval;
+
+ // We want to send back the last animation with the property if there are multiples.
+ // So we need to iterate through all animations
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ RefPtr<KeyframeAnimation> anim = it->second;
+ if (anim->hasAnimationForProperty(property))
+ retval = anim;
+ }
+ }
+
+ return retval;
+}
+
+void CompositeAnimation::suspendAnimations()
+{
+ if (m_isSuspended)
+ return;
+
+ m_isSuspended = true;
+
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ if (KeyframeAnimation* anim = it->second.get())
+ anim->updatePlayState(false);
+ }
+ }
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
+ ImplicitAnimation* anim = it->second.get();
+ if (anim && anim->hasStyle())
+ anim->updatePlayState(false);
+ }
+ }
+}
+
+void CompositeAnimation::resumeAnimations()
+{
+ if (!m_isSuspended)
+ return;
+
+ m_isSuspended = false;
+
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ KeyframeAnimation* anim = it->second.get();
+ if (anim && anim->playStatePlaying())
+ anim->updatePlayState(true);
+ }
+ }
+
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
+ ImplicitAnimation* anim = it->second.get();
+ if (anim && anim->hasStyle())
+ anim->updatePlayState(true);
+ }
+ }
+}
+
+void CompositeAnimation::overrideImplicitAnimations(int property)
+{
+ CSSPropertyTransitionsMap::const_iterator end = m_transitions.end();
+ if (!m_transitions.isEmpty()) {
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != end; ++it) {
+ ImplicitAnimation* anim = it->second.get();
+ if (anim && anim->animatingProperty() == property)
+ anim->setOverridden(true);
+ }
+ }
+}
+
+void CompositeAnimation::resumeOverriddenImplicitAnimations(int property)
+{
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator end = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != end; ++it) {
+ ImplicitAnimation* anim = it->second.get();
+ if (anim && anim->animatingProperty() == property)
+ anim->setOverridden(false);
+ }
+ }
+}
+
+bool CompositeAnimation::isAnimatingProperty(int property, bool acceleratedOnly, bool isRunningNow) const
+{
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ KeyframeAnimation* anim = it->second.get();
+ if (anim && anim->isAnimatingProperty(property, acceleratedOnly, isRunningNow))
+ return true;
+ }
+ }
+
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
+ ImplicitAnimation* anim = it->second.get();
+ if (anim && anim->isAnimatingProperty(property, acceleratedOnly, isRunningNow))
+ return true;
+ }
+ }
+ return false;
+}
+
+bool CompositeAnimation::pauseAnimationAtTime(const AtomicString& name, double t)
+{
+ if (!name)
+ return false;
+
+ m_keyframeAnimations.checkConsistency();
+
+ RefPtr<KeyframeAnimation> keyframeAnim = m_keyframeAnimations.get(name.impl());
+ if (!keyframeAnim || !keyframeAnim->running())
+ return false;
+
+ int count = keyframeAnim->m_animation->iterationCount();
+ if ((t >= 0.0) && (!count || (t <= count * keyframeAnim->duration()))) {
+ keyframeAnim->freezeAtTime(t);
+ return true;
+ }
+
+ return false;
+}
+
+bool CompositeAnimation::pauseTransitionAtTime(int property, double t)
+{
+ if ((property < firstCSSProperty) || (property >= firstCSSProperty + numCSSProperties))
+ return false;
+
+ ImplicitAnimation* implAnim = m_transitions.get(property).get();
+ if (!implAnim || !implAnim->running())
+ return false;
+
+ if ((t >= 0.0) && (t <= implAnim->duration())) {
+ implAnim->freezeAtTime(t);
+ return true;
+ }
+
+ return false;
+}
+
+unsigned CompositeAnimation::numberOfActiveAnimations() const
+{
+ unsigned count = 0;
+
+ if (!m_keyframeAnimations.isEmpty()) {
+ m_keyframeAnimations.checkConsistency();
+ AnimationNameMap::const_iterator animationsEnd = m_keyframeAnimations.end();
+ for (AnimationNameMap::const_iterator it = m_keyframeAnimations.begin(); it != animationsEnd; ++it) {
+ KeyframeAnimation* anim = it->second.get();
+ if (anim->running())
+ ++count;
+ }
+ }
+
+ if (!m_transitions.isEmpty()) {
+ CSSPropertyTransitionsMap::const_iterator transitionsEnd = m_transitions.end();
+ for (CSSPropertyTransitionsMap::const_iterator it = m_transitions.begin(); it != transitionsEnd; ++it) {
+ ImplicitAnimation* anim = it->second.get();
+ if (anim->running())
+ ++count;
+ }
+ }
+
+ return count;
+}
+
+} // namespace WebCore