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