From 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c Mon Sep 17 00:00:00 2001
From: Lorry Tar Creator <lorry-tar-importer@lorry>
Date: Tue, 27 Jun 2017 06:07:23 +0000
Subject: webkitgtk-2.16.5

---
 Source/WebCore/svg/SVGGraphicsElement.cpp | 78 +++++++++++++++++++++----------
 1 file changed, 53 insertions(+), 25 deletions(-)

(limited to 'Source/WebCore/svg/SVGGraphicsElement.cpp')

diff --git a/Source/WebCore/svg/SVGGraphicsElement.cpp b/Source/WebCore/svg/SVGGraphicsElement.cpp
index 53ba8db0b..f5f929329 100644
--- a/Source/WebCore/svg/SVGGraphicsElement.cpp
+++ b/Source/WebCore/svg/SVGGraphicsElement.cpp
@@ -19,17 +19,16 @@
  */
 
 #include "config.h"
-
-#if ENABLE(SVG)
 #include "SVGGraphicsElement.h"
 
-#include "AffineTransform.h"
-#include "Attribute.h"
 #include "RenderSVGPath.h"
 #include "RenderSVGResource.h"
-#include "SVGElementInstance.h"
+#include "SVGMatrix.h"
 #include "SVGNames.h"
 #include "SVGPathData.h"
+#include "SVGRect.h"
+#include "SVGStringList.h"
+#include <wtf/NeverDestroyed.h>
 
 namespace WebCore {
 
@@ -44,6 +43,7 @@ END_REGISTER_ANIMATED_PROPERTIES
 
 SVGGraphicsElement::SVGGraphicsElement(const QualifiedName& tagName, Document& document)
     : SVGElement(tagName, document)
+    , m_shouldIsolateBlending(false)
 {
     registerAnimatedPropertiesForSVGGraphicsElement();
 }
@@ -52,11 +52,21 @@ SVGGraphicsElement::~SVGGraphicsElement()
 {
 }
 
+Ref<SVGMatrix> SVGGraphicsElement::getCTMForBindings()
+{
+    return SVGMatrix::create(getCTM());
+}
+
 AffineTransform SVGGraphicsElement::getCTM(StyleUpdateStrategy styleUpdateStrategy)
 {
     return SVGLocatable::computeCTM(this, SVGLocatable::NearestViewportScope, styleUpdateStrategy);
 }
 
+Ref<SVGMatrix> SVGGraphicsElement::getScreenCTMForBindings()
+{
+    return SVGMatrix::create(getScreenCTM());
+}
+
 AffineTransform SVGGraphicsElement::getScreenCTM(StyleUpdateStrategy styleUpdateStrategy)
 {
     return SVGLocatable::computeCTM(this, SVGLocatable::ScreenScope, styleUpdateStrategy);
@@ -65,7 +75,7 @@ AffineTransform SVGGraphicsElement::getScreenCTM(StyleUpdateStrategy styleUpdate
 AffineTransform SVGGraphicsElement::animatedLocalTransform() const
 {
     AffineTransform matrix;
-    RenderStyle* style = renderer() ? &renderer()->style() : nullptr;
+    auto* style = renderer() ? &renderer()->style() : nullptr;
 
     // If CSS property was set, use that, otherwise fallback to attribute (if set).
     if (style && style->hasTransform()) {
@@ -76,6 +86,14 @@ AffineTransform SVGGraphicsElement::animatedLocalTransform() const
 
         // Flatten any 3D transform.
         matrix = transform.toAffineTransform();
+        // CSS bakes the zoom factor into lengths, including translation components.
+        // In order to align CSS & SVG transforms, we need to invert this operation.
+        float zoom = style->effectiveZoom();
+        if (zoom != 1) {
+            matrix.setE(matrix.e() / zoom);
+            matrix.setF(matrix.f() / zoom);
+        }
+
     } else
         transform().concatenate(matrix);
 
@@ -93,33 +111,26 @@ AffineTransform* SVGGraphicsElement::supplementalTransform()
 
 bool SVGGraphicsElement::isSupportedAttribute(const QualifiedName& attrName)
 {
-    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
-    if (supportedAttributes.isEmpty()) {
+    static NeverDestroyed<HashSet<QualifiedName>> supportedAttributes;
+    if (supportedAttributes.get().isEmpty()) {
         SVGTests::addSupportedAttributes(supportedAttributes);
-        supportedAttributes.add(SVGNames::transformAttr);
+        supportedAttributes.get().add(SVGNames::transformAttr);
     }
-    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
+    return supportedAttributes.get().contains<SVGAttributeHashTranslator>(attrName);
 }
 
 void SVGGraphicsElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
-    if (!isSupportedAttribute(name)) {
-        SVGElement::parseAttribute(name, value);
-        return;
-    }
-
     if (name == SVGNames::transformAttr) {
-        SVGTransformList newList;
+        SVGTransformListValues newList;
         newList.parse(value);
         detachAnimatedTransformListWrappers(newList.size());
         setTransformBaseValue(newList);
         return;
     }
 
-    if (SVGTests::parseAttribute(name, value))
-        return;
-
-    ASSERT_NOT_REACHED();
+    SVGElement::parseAttribute(name, value);
+    SVGTests::parseAttribute(name, value);
 }
 
 void SVGGraphicsElement::svgAttributeChanged(const QualifiedName& attrName)
@@ -129,7 +140,7 @@ void SVGGraphicsElement::svgAttributeChanged(const QualifiedName& attrName)
         return;
     }
 
-    SVGElementInstance::InvalidationGuard invalidationGuard(this);
+    InstanceInvalidationGuard guard(*this);
 
     if (SVGTests::handleAttributeChange(this, attrName))
         return;
@@ -157,15 +168,19 @@ SVGElement* SVGGraphicsElement::farthestViewportElement() const
     return SVGTransformable::farthestViewportElement(this);
 }
 
+Ref<SVGRect> SVGGraphicsElement::getBBoxForBindings()
+{
+    return SVGRect::create(getBBox());
+}
+
 FloatRect SVGGraphicsElement::getBBox(StyleUpdateStrategy styleUpdateStrategy)
 {
     return SVGTransformable::getBBox(this, styleUpdateStrategy);
 }
 
-RenderPtr<RenderElement> SVGGraphicsElement::createElementRenderer(PassRef<RenderStyle> style)
+RenderPtr<RenderElement> SVGGraphicsElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
 {
-    // By default, any subclass is expected to do path-based drawing
-    return createRenderer<RenderSVGPath>(*this, std::move(style));
+    return createRenderer<RenderSVGPath>(*this, WTFMove(style));
 }
 
 void SVGGraphicsElement::toClipPath(Path& path)
@@ -175,6 +190,19 @@ void SVGGraphicsElement::toClipPath(Path& path)
     path.transform(animatedLocalTransform());
 }
 
+Ref<SVGStringList> SVGGraphicsElement::requiredFeatures()
+{
+    return SVGTests::requiredFeatures(*this);
+}
+
+Ref<SVGStringList> SVGGraphicsElement::requiredExtensions()
+{ 
+    return SVGTests::requiredExtensions(*this);
+}
+
+Ref<SVGStringList> SVGGraphicsElement::systemLanguage()
+{
+    return SVGTests::systemLanguage(*this);
 }
 
-#endif // ENABLE(SVG)
+}
-- 
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