--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/animation/ImplicitAnimation.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,284 @@
+/*
+ * 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 "AnimationControllerPrivate.h"
+#include "CompositeAnimation.h"
+#include "CSSPropertyNames.h"
+#include "EventNames.h"
+#include "ImplicitAnimation.h"
+#include "KeyframeAnimation.h"
+#include "RenderLayer.h"
+#include "RenderLayerBacking.h"
+#include <wtf/UnusedParam.h>
+
+namespace WebCore {
+
+ImplicitAnimation::ImplicitAnimation(const Animation* transition, int animatingProperty, RenderObject* renderer, CompositeAnimation* compAnim, RenderStyle* fromStyle)
+ : AnimationBase(transition, renderer, compAnim)
+ , m_transitionProperty(transition->property())
+ , m_animatingProperty(animatingProperty)
+ , m_overridden(false)
+ , m_active(true)
+ , m_fromStyle(fromStyle)
+{
+ ASSERT(animatingProperty != cAnimateAll);
+}
+
+ImplicitAnimation::~ImplicitAnimation()
+{
+ // // Make sure to tell the renderer that we are ending. This will make sure any accelerated animations are removed.
+ if (!postActive())
+ endAnimation();
+}
+
+bool ImplicitAnimation::shouldSendEventForListener(Document::ListenerType inListenerType) const
+{
+ return m_object->document()->hasListenerType(inListenerType);
+}
+
+void ImplicitAnimation::animate(CompositeAnimation*, RenderObject*, const RenderStyle*, RenderStyle* targetStyle, RefPtr<RenderStyle>& animatedStyle)
+{
+ // If we get this far and the animation is done, it means we are cleaning up a just finished animation.
+ // So just return. Everything is already all cleaned up.
+ if (postActive())
+ return;
+
+ // Reset to start the transition if we are new
+ if (isNew())
+ reset(targetStyle);
+
+ // Run a cycle of animation.
+ // We know we will need a new render style, so make one if needed
+ if (!animatedStyle)
+ animatedStyle = RenderStyle::clone(targetStyle);
+
+ bool needsAnim = blendProperties(this, m_animatingProperty, animatedStyle.get(), m_fromStyle.get(), m_toStyle.get(), progress(1, 0, 0));
+ // FIXME: we also need to detect cases where we have to software animate for other reasons,
+ // such as a child using inheriting the transform. https://bugs.webkit.org/show_bug.cgi?id=23902
+ if (needsAnim)
+ setAnimating();
+ else {
+#if USE(ACCELERATED_COMPOSITING)
+ // If we are running an accelerated animation, set a flag in the style which causes the style
+ // to compare as different to any other style. This ensures that changes to the property
+ // that is animating are correctly detected during the animation (e.g. when a transition
+ // gets interrupted).
+ animatedStyle->setIsRunningAcceleratedAnimation();
+#endif
+ }
+
+ // Fire the start timeout if needed
+ fireAnimationEventsIfNeeded();
+}
+
+void ImplicitAnimation::getAnimatedStyle(RefPtr<RenderStyle>& animatedStyle)
+{
+ if (!animatedStyle)
+ animatedStyle = RenderStyle::clone(m_toStyle.get());
+
+ blendProperties(this, m_animatingProperty, animatedStyle.get(), m_fromStyle.get(), m_toStyle.get(), progress(1, 0, 0));
+}
+
+bool ImplicitAnimation::startAnimation(double timeOffset)
+{
+#if USE(ACCELERATED_COMPOSITING)
+ if (m_object && m_object->hasLayer()) {
+ RenderLayer* layer = toRenderBoxModelObject(m_object)->layer();
+ if (layer->isComposited())
+ return layer->backing()->startTransition(timeOffset, m_animatingProperty, m_fromStyle.get(), m_toStyle.get());
+ }
+#else
+ UNUSED_PARAM(timeOffset);
+#endif
+ return false;
+}
+
+void ImplicitAnimation::endAnimation()
+{
+#if USE(ACCELERATED_COMPOSITING)
+ if (m_object && m_object->hasLayer()) {
+ RenderLayer* layer = toRenderBoxModelObject(m_object)->layer();
+ if (layer->isComposited())
+ layer->backing()->transitionFinished(m_animatingProperty);
+ }
+#endif
+}
+
+void ImplicitAnimation::onAnimationEnd(double elapsedTime)
+{
+ // If we have a keyframe animation on this property, this transition is being overridden. The keyframe
+ // animation keeps an unanimated style in case a transition starts while the keyframe animation is
+ // running. But now that the transition has completed, we need to update this style with its new
+ // destination. If we didn't, the next time through we would think a transition had started
+ // (comparing the old unanimated style with the new final style of the transition).
+ RefPtr<KeyframeAnimation> keyframeAnim = m_compAnim->getAnimationForProperty(m_animatingProperty);
+ if (keyframeAnim)
+ keyframeAnim->setUnanimatedStyle(m_toStyle);
+
+ sendTransitionEvent(eventNames().webkitTransitionEndEvent, elapsedTime);
+ endAnimation();
+}
+
+bool ImplicitAnimation::sendTransitionEvent(const AtomicString& eventType, double elapsedTime)
+{
+ if (eventType == eventNames().webkitTransitionEndEvent) {
+ Document::ListenerType listenerType = Document::TRANSITIONEND_LISTENER;
+
+ if (shouldSendEventForListener(listenerType)) {
+ String propertyName;
+ if (m_animatingProperty != cAnimateAll)
+ propertyName = getPropertyName(static_cast<CSSPropertyID>(m_animatingProperty));
+
+ // Dispatch the event
+ RefPtr<Element> element = 0;
+ if (m_object->node() && m_object->node()->isElementNode())
+ element = static_cast<Element*>(m_object->node());
+
+ ASSERT(!element || (element->document() && !element->document()->inPageCache()));
+ if (!element)
+ return false;
+
+ // Schedule event handling
+ m_compAnim->animationController()->addEventToDispatch(element, eventType, propertyName, elapsedTime);
+
+ // Restore the original (unanimated) style
+ if (eventType == eventNames().webkitTransitionEndEvent && element->renderer())
+ setNeedsStyleRecalc(element.get());
+
+ return true; // Did dispatch an event
+ }
+ }
+
+ return false; // Didn't dispatch an event
+}
+
+void ImplicitAnimation::reset(RenderStyle* to)
+{
+ ASSERT(to);
+ ASSERT(m_fromStyle);
+
+ m_toStyle = to;
+
+ // Restart the transition
+ if (m_fromStyle && m_toStyle)
+ updateStateMachine(AnimationStateInputRestartAnimation, -1);
+
+ // set the transform animation list
+ validateTransformFunctionList();
+}
+
+void ImplicitAnimation::setOverridden(bool b)
+{
+ if (b == m_overridden)
+ return;
+
+ m_overridden = b;
+ updateStateMachine(m_overridden ? AnimationStateInputPauseOverride : AnimationStateInputResumeOverride, -1);
+}
+
+bool ImplicitAnimation::affectsProperty(int property) const
+{
+ return (m_animatingProperty == property);
+}
+
+bool ImplicitAnimation::isTargetPropertyEqual(int prop, const RenderStyle* targetStyle)
+{
+ // We can get here for a transition that has not started yet. This would make m_toStyle unset and null.
+ // So we check that here (see <https://bugs.webkit.org/show_bug.cgi?id=26706>)
+ if (!m_toStyle)
+ return false;
+ return propertiesEqual(prop, m_toStyle.get(), targetStyle);
+}
+
+void ImplicitAnimation::blendPropertyValueInStyle(int prop, RenderStyle* currentStyle)
+{
+ // We should never add a transition with a 0 duration and delay. But if we ever did
+ // it would have a null toStyle. So just in case, let's check that here. (See
+ // <https://bugs.webkit.org/show_bug.cgi?id=24787>
+ if (!m_toStyle)
+ return;
+
+ blendProperties(this, prop, currentStyle, m_fromStyle.get(), m_toStyle.get(), progress(1, 0, 0));
+}
+
+void ImplicitAnimation::validateTransformFunctionList()
+{
+ m_transformFunctionListValid = false;
+
+ if (!m_fromStyle || !m_toStyle)
+ return;
+
+ const TransformOperations* val = &m_fromStyle->transform();
+ const TransformOperations* toVal = &m_toStyle->transform();
+
+ if (val->operations().isEmpty())
+ val = toVal;
+
+ if (val->operations().isEmpty())
+ return;
+
+ // See if the keyframes are valid
+ if (val != toVal) {
+ // A list of length 0 matches anything
+ if (!toVal->operations().isEmpty()) {
+ // If the sizes of the function lists don't match, the lists don't match
+ if (val->operations().size() != toVal->operations().size())
+ return;
+
+ // If the types of each function are not the same, the lists don't match
+ for (size_t j = 0; j < val->operations().size(); ++j) {
+ if (!val->operations()[j]->isSameType(*toVal->operations()[j]))
+ return;
+ }
+ }
+ }
+
+ // Keyframes are valid
+ m_transformFunctionListValid = true;
+}
+
+double ImplicitAnimation::timeToNextService()
+{
+ double t = AnimationBase::timeToNextService();
+#if USE(ACCELERATED_COMPOSITING)
+ if (t != 0 || preActive())
+ return t;
+
+ // A return value of 0 means we need service. But if this is an accelerated animation we
+ // only need service at the end of the transition.
+ if (animationOfPropertyIsAccelerated(m_animatingProperty) && isAccelerated()) {
+ bool isLooping;
+ getTimeToNextEvent(t, isLooping);
+ }
+#endif
+ return t;
+}
+
+} // namespace WebCore