Move SVG path blend state to its own object

Source/core/svg/SVGPathBlender.h

 /*
  * Copyright (C) Research In Motion Limited 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef SVGPathBlender_h
 #define SVGPathBlender_h
 
-#include "platform/geometry/FloatPoint.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
-enum FloatBlendMode {
-    BlendHorizontal,
-    BlendVertical
-};
-
 struct PathSegmentData;
 class SVGPathConsumer;
 class SVGPathSource;
 
 class SVGPathBlender : public NoBaseWillBeGarbageCollectedFinalized<SVGPathBlender> {
     WTF_MAKE_NONCOPYABLE(SVGPathBlender); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(SVGPathBlender);
 public:
     SVGPathBlender(SVGPathSource* fromSource, SVGPathSource* toSource, SVGPathConsumer*);
 
     bool addAnimatedPath(unsigned repeatCount);
     bool blendAnimatedPath(float);
 
     DECLARE_TRACE();
 
 private:
-    PathSegmentData blendMoveToSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendLineToSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendLineToHorizontalSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendLineToVerticalSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendCurveToCubicSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendCurveToCubicSmoothSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendCurveToQuadraticSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendCurveToQuadraticSmoothSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    PathSegmentData blendArcToSegment(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-    void blendSegments(const PathSegmentData& fromSeg, const PathSegmentData& toSeg);
-
-    float blendAnimatedDimensonalFloat(float, float, FloatBlendMode);
-    FloatPoint blendAnimatedFloatPoint(const FloatPoint& from, const FloatPoint& to);
-    FloatPoint blendAnimatedFloatPointSameCoordinates(const FloatPoint& from, const FloatPoint& to);
+    class BlendState;
+    bool blendAnimatedPath(BlendState&);
 
     RawPtrWillBeMember<SVGPathSource> m_fromSource;
     RawPtrWillBeMember<SVGPathSource> m_toSource;
     RawPtrWillBeMember<SVGPathConsumer> m_consumer;
-
-    FloatPoint m_fromCurrentPoint;
-    FloatPoint m_toCurrentPoint;
-
-    float m_progress;
-    unsigned m_addTypesCount;
-    bool m_isInFirstHalfOfAnimation;
-    // This is per-segment blend state corresponding to the 'from' and 'to'
-    // segments currently being blended, and only used within blendSegments().
-    bool m_typesAreEqual;
-    bool m_fromIsAbsolute;
-    bool m_toIsAbsolute;
 };
 
 } // namespace blink
 
 #endif // SVGPathBlender_h