reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef Sk2DPathEffect_DEFINED |
| 18 | #define Sk2DPathEffect_DEFINED |
| 19 | |
| 20 | #include "SkPathEffect.h" |
| 21 | #include "SkMatrix.h" |
| 22 | |
| 23 | // This class is not exported to java. |
| 24 | class Sk2DPathEffect : public SkPathEffect { |
| 25 | public: |
| 26 | Sk2DPathEffect(const SkMatrix& mat); |
| 27 | |
| 28 | // overrides |
| 29 | // This method is not exported to java. |
| 30 | virtual bool filterPath(SkPath* dst, const SkPath& src, SkScalar* width); |
| 31 | |
| 32 | // overrides from SkFlattenable |
| 33 | // This method is not exported to java. |
| 34 | virtual void flatten(SkFlattenableWriteBuffer&); |
| 35 | |
| 36 | // This method is not exported to java. |
| 37 | virtual Factory getFactory(); |
| 38 | |
| 39 | protected: |
| 40 | /** New virtual, to be overridden by subclasses. |
| 41 | This is called once from filterPath, and provides the |
| 42 | uv parameter bounds for the path. Subsequent calls to |
| 43 | next() will receive u and v values within these bounds, |
| 44 | and then a call to end() will signal the end of processing. |
| 45 | */ |
| 46 | virtual void begin(const SkIRect& uvBounds, SkPath* dst); |
| 47 | virtual void next(const SkPoint& loc, int u, int v, SkPath* dst); |
| 48 | virtual void end(SkPath* dst); |
| 49 | |
| 50 | /** Low-level virtual called per span of locations in the u-direction. |
| 51 | The default implementation calls next() repeatedly with each |
| 52 | location. |
| 53 | */ |
| 54 | virtual void nextSpan(int u, int v, int ucount, SkPath* dst); |
| 55 | |
| 56 | const SkMatrix& getMatrix() const { return fMatrix; } |
| 57 | |
| 58 | // protected so that subclasses can call this during unflattening |
| 59 | Sk2DPathEffect(SkFlattenableReadBuffer&); |
| 60 | |
| 61 | private: |
| 62 | SkMatrix fMatrix, fInverse; |
| 63 | // illegal |
| 64 | Sk2DPathEffect(const Sk2DPathEffect&); |
| 65 | Sk2DPathEffect& operator=(const Sk2DPathEffect&); |
| 66 | |
| 67 | static SkFlattenable* CreateProc(SkFlattenableReadBuffer&); |
| 68 | |
| 69 | friend class Sk2DPathEffectBlitter; |
| 70 | typedef SkPathEffect INHERITED; |
| 71 | }; |
| 72 | |
| 73 | #endif |