SVG <marker> painting TLC

third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceMarker.h

 /*
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 25 matching lines @@
     const char* name() const override { return "LayoutSVGResourceMarker"; }
 
     void removeAllClientsFromCache(bool markForInvalidation = true) override;
     void removeClientFromCache(LayoutObject*, bool markForInvalidation = true) override;
 
     // Calculates marker boundaries, mapped to the target element's coordinate space
     FloatRect markerBoundaries(const AffineTransform& markerTransformation) const;
 
     const AffineTransform& localToSVGParentTransform() const override;
     AffineTransform markerTransformation(const FloatPoint& origin, float angle, float strokeWidth) const;
+    bool shouldPaint() const;
 
     FloatPoint referencePoint() const;
     float angle() const;
     SVGMarkerUnitsType markerUnits() const;
     SVGMarkerOrientType orientType() const;
 
     const FloatRect& viewport() const { return m_viewport; }
 
     static const LayoutSVGResourceType s_resourceType = MarkerResourceType;
     LayoutSVGResourceType resourceType() const override { return s_resourceType; }
 
 private:
     void layout() override;
     void calcViewport() override;
     bool calculateLocalTransform() override;
 
-    // Generates a transformation matrix usable to layout marker content. Handles scaling the marker content
-    // acording to SVGs markerUnits="strokeWidth" concept, when a strokeWidth value != -1 is passed in.
-    AffineTransform markerContentTransformation(const AffineTransform& contentTransformation, const FloatPoint& origin, float strokeWidth = -1) const;
-
     AffineTransform viewportTransform() const;
 
     mutable AffineTransform m_localToParentTransform;
     FloatRect m_viewport;
 };
 
 DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(LayoutSVGResourceMarker, MarkerResourceType);
 
 } // namespace blink
 
 #endif