1 /* libs/graphics/sgl/SkBitmapShader.h 2 ** 3 ** Copyright 2006, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #ifndef SkBitmapProcShader_DEFINED 19 #define SkBitmapProcShader_DEFINED 20 21 #include "SkShader.h" 22 #include "SkBitmapProcState.h" 23 24 class SkBitmapProcShader : public SkShader { 25 public: 26 SkBitmapProcShader(const SkBitmap& src, TileMode tx, TileMode ty); 27 28 // overrides from SkShader 29 virtual bool setContext(const SkBitmap&, const SkPaint&, const SkMatrix&); getFlags()30 virtual uint32_t getFlags() { return fFlags; } 31 virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count); 32 virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count); 33 virtual void beginSession(); 34 virtual void endSession(); 35 virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*, 36 SkScalar* twoPointRadialParams) const; 37 38 static bool CanDo(const SkBitmap&, TileMode tx, TileMode ty); 39 CreateProc(SkFlattenableReadBuffer & buffer)40 static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) { 41 return SkNEW_ARGS(SkBitmapProcShader, (buffer)); 42 } 43 44 // override from flattenable 45 virtual bool toDumpString(SkString* str) const; 46 47 protected: 48 SkBitmapProcShader(SkFlattenableReadBuffer& ); 49 virtual void flatten(SkFlattenableWriteBuffer& ); getFactory()50 virtual Factory getFactory() { return CreateProc; } 51 52 SkBitmap fRawBitmap; // experimental for RLE encoding 53 SkBitmapProcState fState; 54 uint32_t fFlags; 55 56 private: 57 typedef SkShader INHERITED; 58 }; 59 60 #endif 61