SVG Web Animations: Add compositing pipeline for SVGInterpolationTypes

third_party/WebKit/Source/core/svg/SVGDocumentExtensions.cpp

Index: third_party/WebKit/Source/core/svg/SVGDocumentExtensions.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.cpp b/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.cpp
index e3a6fb5560101aaf7b26b4fc20d123c8d68ccb68..027a89bd1bdf6037ab2e7be7cbe88d42a6ad153e 100644
--- a/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.cpp
@@ -22,6 +22,11 @@
 #include "config.h"
 #include "core/svg/SVGDocumentExtensions.h"
 
+#include "core/animation/AnimationStack.h"
+#include "core/animation/ElementAnimations.h"
+#include "core/animation/InterpolationEnvironment.h"
+#include "core/animation/InvalidatableInterpolation.h"
+#include "core/animation/SVGInterpolation.h"
 #include "core/dom/Document.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/layout/svg/SVGResourcesCache.h"
@@ -54,6 +59,11 @@ void SVGDocumentExtensions::removeTimeContainer(SVGSVGElement* element)
     m_timeContainers.remove(element);
 }
 
+void SVGDocumentExtensions::addPendingWebAnimatedSVGElement(SVGElement& element)
+{
+    m_webAnimatedSVGElements.add(&element);

[dstockwell, 2015/10/28 03:39:38]

ASSERT runtime enabled feature?

[alancutter (OOO until 2018), 2015/10/29 04:56:51]

Done.

+}
+
 void SVGDocumentExtensions::addResource(const AtomicString& id, LayoutSVGResourceContainer* resource)
 {
     ASSERT(resource);
@@ -83,17 +93,44 @@ LayoutSVGResourceContainer* SVGDocumentExtensions::resourceById(const AtomicStri
 
 void SVGDocumentExtensions::serviceOnAnimationFrame(Document& document, double monotonicAnimationStartTime)
 {
-    if (!document.svgExtensions() || !RuntimeEnabledFeatures::smilEnabled())
+    if (!document.svgExtensions())
         return;
     document.accessSVGExtensions().serviceAnimations(monotonicAnimationStartTime);
 }
 
 void SVGDocumentExtensions::serviceAnimations(double monotonicAnimationStartTime)
 {
-    WillBeHeapVector<RefPtrWillBeMember<SVGSVGElement>> timeContainers;
-    copyToVector(m_timeContainers, timeContainers);
-    for (const auto& container : timeContainers)
-        container->timeContainer()->serviceAnimations(monotonicAnimationStartTime);
+    if (RuntimeEnabledFeatures::smilEnabled()) {
+        WillBeHeapVector<RefPtrWillBeMember<SVGSVGElement>> timeContainers;
+        copyToVector(m_timeContainers, timeContainers);
+        for (const auto& container : timeContainers)
+            container->timeContainer()->serviceAnimations(monotonicAnimationStartTime);
+    }
+
+    SVGElementSet webAnimatedSVGElements;
+    webAnimatedSVGElements.swap(m_webAnimatedSVGElements);
+
+    // TODO(alancutter): Make SVG animation effect application a separate document lifecycle phase from servicing animations to be responsive to Javascript manipulation of exposed animation objects.
+    for (auto& svgElement : webAnimatedSVGElements) {
+        ActiveInterpolationsMap activeInterpolationsMap = AnimationStack::activeInterpolations(
+            &svgElement->elementAnimations()->animationStack(), nullptr, nullptr, KeyframeEffect::DefaultPriority);
+        for (auto& entry : activeInterpolationsMap) {
+            if (!entry.key.isSVGAttribute())
+                continue;
+            const QualifiedName& attribute = entry.key.svgAttribute();
+            const Interpolation& interpolation = *entry.value.first();
+            if (interpolation.isInvalidatableInterpolation()) {
+                RefPtrWillBeRawPtr<SVGAnimatedPropertyBase> propertyBase = svgElement->propertyFromAttribute(attribute);
+                InterpolationEnvironment environment(*svgElement, *propertyBase);
+                InvalidatableInterpolation::applyStack(entry.value, environment);
+            } else {
+                // TODO(alancutter): Remove this old code path once animations have completely migrated to InterpolationTypes.
+                toSVGInterpolation(interpolation).apply(*svgElement);
+            }
+        }
+    }
+
+    ASSERT(m_webAnimatedSVGElements.isEmpty());
 }
 
 void SVGDocumentExtensions::startAnimations()