Refactoring animation code in accelerated path.

Source/core/rendering/RenderLayerBacking.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 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
@@ skipping 22 matching lines @@
 #include "core/fetch/ImageResource.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/page/Chrome.h"
 #include "core/page/FrameView.h"
 #include "core/page/Settings.h"
 #include "core/page/animation/AnimationController.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
-#include "core/platform/animation/KeyframeValueList.h"
 #include "core/platform/graphics/FontCache.h"
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/GraphicsLayer.h"
 #include "core/plugins/PluginView.h"
 #include "core/rendering/RenderApplet.h"
 #include "core/rendering/RenderEmbeddedObject.h"
 #include "core/rendering/RenderIFrame.h"
 #include "core/rendering/RenderImage.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderLayerCompositor.h"
 #include "core/rendering/RenderVideo.h"
 #include "core/rendering/RenderView.h"
+#include "core/rendering/animation/WebAnimationProvider.h"
 #include "core/rendering/style/KeyframeList.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/text/StringBuilder.h"
 
 #include "core/platform/graphics/filters/custom/CustomFilterOperation.h"
 #include "core/rendering/FilterEffectRenderer.h"
 
 #include "core/platform/graphics/GraphicsContext3D.h"
 
 using namespace std;
@@ skipping 79 matching lines @@
 {
     Page* page = layer->renderer()->frame()->page();
     if (!page)
         return 0;
 
     return page->scrollingCoordinator();
 }
 
 RenderLayerBacking::RenderLayerBacking(RenderLayer* layer)
     : m_owningLayer(layer)
+    , m_animationProvider(adoptPtr(new WebAnimationProvider))
     , m_artificiallyInflatedBounds(false)
     , m_boundsConstrainedByClipping(false)
     , m_isMainFrameRenderViewLayer(false)
     , m_requiresOwnBackingStore(true)
     , m_canCompositeFilters(false)
     , m_backgroundLayerPaintsFixedRootBackground(false)
 {
     if (layer->isRootLayer()) {
         Frame& frame = toRenderView(renderer())->frameView()->frame();
         Page* page = frame.page();
@@ skipping 1502 matching lines @@
 
 #ifndef NDEBUG
 void RenderLayerBacking::verifyNotPainting()
 {
     ASSERT(!renderer()->frame()->page() || !renderer()->frame()->page()->isPainting());
 }
 #endif
 
 bool RenderLayerBacking::startAnimation(double timeOffset, const CSSAnimationData* anim, const KeyframeList& keyframes)
 {
-    bool hasOpacity = keyframes.containsProperty(CSSPropertyOpacity);
     bool hasTransform = renderer()->isBox() && keyframes.containsProperty(CSSPropertyWebkitTransform);
-    bool hasFilter = keyframes.containsProperty(CSSPropertyWebkitFilter);
-
-    if (!hasOpacity && !hasTransform && !hasFilter)
+    IntSize boxSize;
+    if (hasTransform)
+        boxSize = toRenderBox(renderer())->pixelSnappedBorderBoxRect().size();
+    WebAnimations animations(m_animationProvider->startAnimation(timeOffset, anim, keyframes, hasTransform, boxSize));
+    if (animations.isEmpty())
         return false;
 
-    KeyframeValueList transformVector(AnimatedPropertyWebkitTransform);
-    KeyframeValueList opacityVector(AnimatedPropertyOpacity);
-    KeyframeValueList filterVector(AnimatedPropertyWebkitFilter);
-
-    size_t numKeyframes = keyframes.size();
-    for (size_t i = 0; i < numKeyframes; ++i) {
-        const KeyframeValue& currentKeyframe = keyframes[i];
-        const RenderStyle* keyframeStyle = currentKeyframe.style();
-        double key = currentKeyframe.key();
-
-        if (!keyframeStyle)
-            continue;
-
-        // Get timing function.
-        RefPtr<TimingFunction> tf = currentKeyframe.timingFunction(keyframes.animationName());
-
-        bool isFirstOrLastKeyframe = key == 0 || key == 1;
-        if ((hasTransform && isFirstOrLastKeyframe) || currentKeyframe.containsProperty(CSSPropertyWebkitTransform))
-            transformVector.insert(adoptPtr(new TransformAnimationValue(key, &(keyframeStyle->transform()), tf)));
-
-        if ((hasOpacity && isFirstOrLastKeyframe) || currentKeyframe.containsProperty(CSSPropertyOpacity))
-            opacityVector.insert(adoptPtr(new FloatAnimationValue(key, keyframeStyle->opacity(), tf)));
-
-        if ((hasFilter && isFirstOrLastKeyframe) || currentKeyframe.containsProperty(CSSPropertyWebkitFilter))
-            filterVector.insert(adoptPtr(new FilterAnimationValue(key, &(keyframeStyle->filter()), tf)));
-    }
-
     bool didAnimate = false;
-
-    if (hasTransform && m_graphicsLayer->addAnimation(transformVector, toRenderBox(renderer())->pixelSnappedBorderBoxRect().size(), anim, keyframes.animationName(), timeOffset))
+    if (animations.m_transformAnimation && m_graphicsLayer->addAnimation(animations.m_transformAnimation.get()))
         didAnimate = true;
-
-    if (hasOpacity && m_graphicsLayer->addAnimation(opacityVector, IntSize(), anim, keyframes.animationName(), timeOffset))
+    if (animations.m_opacityAnimation && m_graphicsLayer->addAnimation(animations.m_opacityAnimation.get()))
         didAnimate = true;
-
-    if (hasFilter && m_graphicsLayer->addAnimation(filterVector, IntSize(), anim, keyframes.animationName(), timeOffset))
+    if (animations.m_filterAnimation && m_graphicsLayer->addAnimation(animations.m_filterAnimation.get()))
         didAnimate = true;
 
     return didAnimate;
 }
 
 void RenderLayerBacking::animationPaused(double timeOffset, const String& animationName)
 {
-    m_graphicsLayer->pauseAnimation(animationName, timeOffset);
+    int animationId = m_animationProvider->getWebAnimationId(animationName);
+    if (animationId)
+        m_graphicsLayer->pauseAnimation(animationId, timeOffset);
 }
 
 void RenderLayerBacking::animationFinished(const String& animationName)
 {
-    m_graphicsLayer->removeAnimation(animationName);
+    int animationId = m_animationProvider->getWebAnimationId(animationName);
+    if (animationId)
+        m_graphicsLayer->removeAnimation(animationId);
 }
 
 bool RenderLayerBacking::startTransition(double timeOffset, CSSPropertyID property, const RenderStyle* fromStyle, const RenderStyle* toStyle)
 {
+    ASSERT(property != CSSPropertyInvalid);
+    IntSize boxSize;
+    if (property == CSSPropertyWebkitTransform && m_owningLayer->hasTransform()) {
+        ASSERT(renderer()->isBox());
+        boxSize = toRenderBox(renderer())->pixelSnappedBorderBoxRect().size();
+    }
+    float fromOpacity = 0;
+    float toOpacity = 0;
+    if (property == CSSPropertyOpacity) {
+        fromOpacity = compositingOpacity(fromStyle->opacity());
+        toOpacity = compositingOpacity(toStyle->opacity());
+    }
+    WebAnimations animations(m_animationProvider->startTransition(timeOffset, property, fromStyle,
+        toStyle, m_owningLayer->hasTransform(), m_owningLayer->hasFilter(), boxSize, fromOpacity, toOpacity));
     bool didAnimate = false;
-
-    ASSERT(property != CSSPropertyInvalid);
-
-    if (property == CSSPropertyOpacity) {
-        const CSSAnimationData* opacityAnim = toStyle->transitionForProperty(CSSPropertyOpacity);
-        if (opacityAnim && !opacityAnim->isEmptyOrZeroDuration()) {
-            KeyframeValueList opacityVector(AnimatedPropertyOpacity);
-            opacityVector.insert(adoptPtr(new FloatAnimationValue(0, compositingOpacity(fromStyle->opacity()))));
-            opacityVector.insert(adoptPtr(new FloatAnimationValue(1, compositingOpacity(toStyle->opacity()))));
-            // The boxSize param is only used for transform animations (which can only run on RenderBoxes), so we pass an empty size here.
-            if (m_graphicsLayer->addAnimation(opacityVector, IntSize(), opacityAnim, GraphicsLayer::animationNameForTransition(AnimatedPropertyOpacity), timeOffset)) {
-                // To ensure that the correct opacity is visible when the animation ends, also set the final opacity.
-                updateOpacity(toStyle);
-                didAnimate = true;
-            }
-        }
+    if (animations.m_transformAnimation && m_graphicsLayer->addAnimation(animations.m_transformAnimation.get())) {
+        // To ensure that the correct transform is visible when the animation ends, also set the final transform.
+        updateTransform(toStyle);
+        didAnimate = true;
     }
-
-    if (property == CSSPropertyWebkitTransform && m_owningLayer->hasTransform()) {
-        const CSSAnimationData* transformAnim = toStyle->transitionForProperty(CSSPropertyWebkitTransform);
-        if (transformAnim && !transformAnim->isEmptyOrZeroDuration()) {
-            KeyframeValueList transformVector(AnimatedPropertyWebkitTransform);
-            transformVector.insert(adoptPtr(new TransformAnimationValue(0, &fromStyle->transform())));
-            transformVector.insert(adoptPtr(new TransformAnimationValue(1, &toStyle->transform())));
-            if (m_graphicsLayer->addAnimation(transformVector, toRenderBox(renderer())->pixelSnappedBorderBoxRect().size(), transformAnim, GraphicsLayer::animationNameForTransition(AnimatedPropertyWebkitTransform), timeOffset)) {
-                // To ensure that the correct transform is visible when the animation ends, also set the final transform.
-                updateTransform(toStyle);
-                didAnimate = true;
-            }
-        }
+    if (animations.m_opacityAnimation && m_graphicsLayer->addAnimation(animations.m_opacityAnimation.get())) {
+        // To ensure that the correct opacity is visible when the animation ends, also set the final opacity.
+        updateOpacity(toStyle);
+        didAnimate = true;
     }
-
-    if (property == CSSPropertyWebkitFilter && m_owningLayer->hasFilter()) {
-        const CSSAnimationData* filterAnim = toStyle->transitionForProperty(CSSPropertyWebkitFilter);
-        if (filterAnim && !filterAnim->isEmptyOrZeroDuration()) {
-            KeyframeValueList filterVector(AnimatedPropertyWebkitFilter);
-            filterVector.insert(adoptPtr(new FilterAnimationValue(0, &fromStyle->filter())));
-            filterVector.insert(adoptPtr(new FilterAnimationValue(1, &toStyle->filter())));
-            if (m_graphicsLayer->addAnimation(filterVector, IntSize(), filterAnim, GraphicsLayer::animationNameForTransition(AnimatedPropertyWebkitFilter), timeOffset)) {
-                // To ensure that the correct filter is visible when the animation ends, also set the final filter.
-                updateFilters(toStyle);
-                didAnimate = true;
-            }
-        }
+    if (animations.m_filterAnimation && m_graphicsLayer->addAnimation(animations.m_filterAnimation.get())) {
+        // To ensure that the correct filter is visible when the animation ends, also set the final filter.
+        updateFilters(toStyle);
+        didAnimate = true;
     }
 
     return didAnimate;
 }
 
 void RenderLayerBacking::transitionPaused(double timeOffset, CSSPropertyID property)
 {
-    AnimatedPropertyID animatedProperty = cssToGraphicsLayerProperty(property);
-    if (animatedProperty != AnimatedPropertyInvalid)
-        m_graphicsLayer->pauseAnimation(GraphicsLayer::animationNameForTransition(animatedProperty), timeOffset);
+    int animationId = m_animationProvider->getWebAnimationId(property);
+    if (animationId)
+        m_graphicsLayer->pauseAnimation(animationId, timeOffset);
 }
 
 void RenderLayerBacking::transitionFinished(CSSPropertyID property)
 {
-    AnimatedPropertyID animatedProperty = cssToGraphicsLayerProperty(property);
-    if (animatedProperty != AnimatedPropertyInvalid)
-        m_graphicsLayer->removeAnimation(GraphicsLayer::animationNameForTransition(animatedProperty));
+    int animationId = m_animationProvider->getWebAnimationId(property);
+    if (animationId)
+        m_graphicsLayer->removeAnimation(animationId);
 }
 
 void RenderLayerBacking::notifyAnimationStarted(const GraphicsLayer*, double time)
 {
     renderer()->animation()->notifyAnimationStarted(renderer(), time);
 }
 
 // This is used for the 'freeze' API, for testing only.
 void RenderLayerBacking::suspendAnimations(double time)
 {
     m_graphicsLayer->suspendAnimations(time);
 }
 
 void RenderLayerBacking::resumeAnimations()
 {
     m_graphicsLayer->resumeAnimations();
 }
 
 IntRect RenderLayerBacking::compositedBounds() const
 {
     return m_compositedBounds;
 }
 
 void RenderLayerBacking::setCompositedBounds(const IntRect& bounds)
 {
     m_compositedBounds = bounds;
 }
 
-CSSPropertyID RenderLayerBacking::graphicsLayerToCSSProperty(AnimatedPropertyID property)
-{
-    CSSPropertyID cssProperty = CSSPropertyInvalid;
-    switch (property) {
-        case AnimatedPropertyWebkitTransform:
-            cssProperty = CSSPropertyWebkitTransform;
-            break;
-        case AnimatedPropertyOpacity:
-            cssProperty = CSSPropertyOpacity;
-            break;
-        case AnimatedPropertyBackgroundColor:
-            cssProperty = CSSPropertyBackgroundColor;
-            break;
-        case AnimatedPropertyWebkitFilter:
-            cssProperty = CSSPropertyWebkitFilter;
-            break;
-        case AnimatedPropertyInvalid:
-            ASSERT_NOT_REACHED();
-    }
-    return cssProperty;
-}
-
-AnimatedPropertyID RenderLayerBacking::cssToGraphicsLayerProperty(CSSPropertyID cssProperty)
-{
-    switch (cssProperty) {
-        case CSSPropertyWebkitTransform:
-            return AnimatedPropertyWebkitTransform;
-        case CSSPropertyOpacity:
-            return AnimatedPropertyOpacity;
-        case CSSPropertyBackgroundColor:
-            return AnimatedPropertyBackgroundColor;
-        case CSSPropertyWebkitFilter:
-            return AnimatedPropertyWebkitFilter;
-        default:
-            // It's fine if we see other css properties here; they are just not accelerated.
-            break;
-    }
-    return AnimatedPropertyInvalid;
-}
-
 CompositingLayerType RenderLayerBacking::compositingLayerType() const
 {
     if (m_graphicsLayer->hasContentsLayer())
         return MediaCompositingLayer;
 
     if (m_graphicsLayer->drawsContent())
         return NormalCompositingLayer;
 
     return ContainerCompositingLayer;
 }
@@ skipping 52 matching lines @@
     } else if (graphicsLayer == m_scrollingContentsLayer.get()) {
         name = "Scrolling Contents Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace WebCore