michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "2D.h"
michael@0: #include <vector>
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace gfx {
michael@0: 
michael@0: struct FlatPathOp
michael@0: {
michael@0:   enum OpType {
michael@0:     OP_MOVETO,
michael@0:     OP_LINETO,
michael@0:   };
michael@0: 
michael@0:   OpType mType;
michael@0:   Point mPoint;
michael@0: };
michael@0: 
michael@0: class FlattenedPath : public PathSink
michael@0: {
michael@0: public:
michael@0:   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(FlattenedPath)
michael@0:   FlattenedPath() : mCachedLength(0)
michael@0:                   , mCalculatedLength(false)
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   virtual void MoveTo(const Point &aPoint);
michael@0:   virtual void LineTo(const Point &aPoint);
michael@0:   virtual void BezierTo(const Point &aCP1,
michael@0:                         const Point &aCP2,
michael@0:                         const Point &aCP3);
michael@0:   virtual void QuadraticBezierTo(const Point &aCP1,
michael@0:                                  const Point &aCP2);
michael@0:   virtual void Close();
michael@0:   virtual void Arc(const Point &aOrigin, float aRadius, float aStartAngle,
michael@0:                    float aEndAngle, bool aAntiClockwise = false);
michael@0: 
michael@0:   virtual Point CurrentPoint() const { return mPathOps.empty() ? Point() : mPathOps[mPathOps.size() - 1].mPoint; }
michael@0: 
michael@0:   Float ComputeLength();
michael@0:   Point ComputePointAtLength(Float aLength, Point *aTangent);
michael@0: 
michael@0: private:
michael@0:   Float mCachedLength;
michael@0:   bool mCalculatedLength;
michael@0:   Point mLastMove;
michael@0: 
michael@0:   std::vector<FlatPathOp> mPathOps;
michael@0: };
michael@0: 
michael@0: }
michael@0: }