michael@0: /*
michael@0:  * Copyright 2006 The Android Open Source Project
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef Sk2DPathEffect_DEFINED
michael@0: #define Sk2DPathEffect_DEFINED
michael@0: 
michael@0: #include "SkPath.h"
michael@0: #include "SkPathEffect.h"
michael@0: #include "SkMatrix.h"
michael@0: 
michael@0: class SK_API Sk2DPathEffect : public SkPathEffect {
michael@0: public:
michael@0:     static Sk2DPathEffect* Create(const SkMatrix& mat) {
michael@0:         return SkNEW_ARGS(Sk2DPathEffect, (mat));
michael@0:     }
michael@0: 
michael@0:     virtual bool filterPath(SkPath*, const SkPath&,
michael@0:                             SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
michael@0: 
michael@0:     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Sk2DPathEffect)
michael@0: 
michael@0: protected:
michael@0:     /** New virtual, to be overridden by subclasses.
michael@0:         This is called once from filterPath, and provides the
michael@0:         uv parameter bounds for the path. Subsequent calls to
michael@0:         next() will receive u and v values within these bounds,
michael@0:         and then a call to end() will signal the end of processing.
michael@0:     */
michael@0:     virtual void begin(const SkIRect& uvBounds, SkPath* dst) const;
michael@0:     virtual void next(const SkPoint& loc, int u, int v, SkPath* dst) const;
michael@0:     virtual void end(SkPath* dst) const;
michael@0: 
michael@0:     /** Low-level virtual called per span of locations in the u-direction.
michael@0:         The default implementation calls next() repeatedly with each
michael@0:         location.
michael@0:     */
michael@0:     virtual void nextSpan(int u, int v, int ucount, SkPath* dst) const;
michael@0: 
michael@0:     const SkMatrix& getMatrix() const { return fMatrix; }
michael@0: 
michael@0:     // protected so that subclasses can call this during unflattening
michael@0:     Sk2DPathEffect(SkReadBuffer&);
michael@0:     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
michael@0: 
michael@0: #ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
michael@0: public:
michael@0: #endif
michael@0:     Sk2DPathEffect(const SkMatrix& mat);
michael@0: 
michael@0: private:
michael@0:     SkMatrix    fMatrix, fInverse;
michael@0:     bool        fMatrixIsInvertible;
michael@0: 
michael@0:     // illegal
michael@0:     Sk2DPathEffect(const Sk2DPathEffect&);
michael@0:     Sk2DPathEffect& operator=(const Sk2DPathEffect&);
michael@0: 
michael@0:     friend class Sk2DPathEffectBlitter;
michael@0:     typedef SkPathEffect INHERITED;
michael@0: };
michael@0: 
michael@0: class SK_API SkLine2DPathEffect : public Sk2DPathEffect {
michael@0: public:
michael@0:     static SkLine2DPathEffect* Create(SkScalar width, const SkMatrix& matrix) {
michael@0:         return SkNEW_ARGS(SkLine2DPathEffect, (width, matrix));
michael@0:     }
michael@0: 
michael@0:     virtual bool filterPath(SkPath* dst, const SkPath& src,
michael@0:                             SkStrokeRec*, const SkRect*) const SK_OVERRIDE;
michael@0: 
michael@0:     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLine2DPathEffect)
michael@0: 
michael@0: protected:
michael@0:     virtual void nextSpan(int u, int v, int ucount, SkPath*) const SK_OVERRIDE;
michael@0: 
michael@0:     SkLine2DPathEffect(SkReadBuffer&);
michael@0: 
michael@0:     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
michael@0: 
michael@0: #ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
michael@0: public:
michael@0: #endif
michael@0:     SkLine2DPathEffect(SkScalar width, const SkMatrix& matrix)
michael@0:     : Sk2DPathEffect(matrix), fWidth(width) {}
michael@0: 
michael@0: private:
michael@0:     SkScalar fWidth;
michael@0: 
michael@0:     typedef Sk2DPathEffect INHERITED;
michael@0: };
michael@0: 
michael@0: class SK_API SkPath2DPathEffect : public Sk2DPathEffect {
michael@0: public:
michael@0:     /**
michael@0:      *  Stamp the specified path to fill the shape, using the matrix to define
michael@0:      *  the latice.
michael@0:      */
michael@0:     static SkPath2DPathEffect* Create(const SkMatrix& matrix, const SkPath& path) {
michael@0:         return SkNEW_ARGS(SkPath2DPathEffect, (matrix, path));
michael@0:     }
michael@0: 
michael@0:     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPath2DPathEffect)
michael@0: 
michael@0: protected:
michael@0:     SkPath2DPathEffect(SkReadBuffer& buffer);
michael@0:     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
michael@0: 
michael@0:     virtual void next(const SkPoint&, int u, int v, SkPath*) const SK_OVERRIDE;
michael@0: 
michael@0: #ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
michael@0: public:
michael@0: #endif
michael@0:     SkPath2DPathEffect(const SkMatrix&, const SkPath&);
michael@0: 
michael@0: private:
michael@0:     SkPath  fPath;
michael@0: 
michael@0:     typedef Sk2DPathEffect INHERITED;
michael@0: };
michael@0: 
michael@0: #endif