Move pathLength scale-factor computation to SVGPathElement

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 50 matching lines @@
 
 DEFINE_TRACE(SVGPathElement)
 {
     visitor->trace(m_pathLength);
     visitor->trace(m_path);
     SVGGeometryElement::trace(visitor);
 }
 
 DEFINE_NODE_FACTORY(SVGPathElement)
 
+const StylePath* SVGPathElement::stylePath() const
+{
+    if (LayoutObject* layoutObject = this->layoutObject())
+        return layoutObject->styleRef().svgStyle().d();
+    return m_path->currentValue()->pathValue()->cachedPath();
+}
+
+float SVGPathElement::pathLengthScaleFactor() const
+{
+    if (!pathLength()->isSpecified())
+        return 1;
+    float authorPathLength = pathLength()->currentValue()->value();
+    if (authorPathLength < 0)
+        return 1;
+    if (!authorPathLength)
+        return 0;
+    float computedPathLength = stylePath()->length();
+    if (!computedPathLength)
+        return 1;
+    return computedPathLength / authorPathLength;
+}
+
 Path SVGPathElement::asPath() const
 {
-    if (layoutObject()) {
-        const SVGComputedStyle& svgStyle = layoutObject()->styleRef().svgStyle();
-        return svgStyle.d()->path();
-    }
-
-    return m_path->currentValue()->pathValue()->cachedPath()->path();
+    return stylePath()->path();
 }
 
 const SVGPathByteStream& SVGPathElement::pathByteStream() const
 {
     if (layoutObject()) {
         const SVGComputedStyle& svgStyle = layoutObject()->styleRef().svgStyle();
         return svgStyle.d()->byteStream();
     }
 
     return m_path->currentValue()->byteStream();
@@ skipping 93 matching lines @@
     return InsertionDone;
 }
 
 void SVGPathElement::removedFrom(ContainerNode* rootParent)
 {
     SVGGeometryElement::removedFrom(rootParent);
     invalidateMPathDependencies();
 }
 
 } // namespace blink