1 2 /* 3 * Copyright 2010 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 11 #ifndef GrAtlas_DEFINED 12 #define GrAtlas_DEFINED 13 14 #include "GrPoint.h" 15 #include "GrTexture.h" 16 17 class GrGpu; 18 class GrRectanizer; 19 class GrAtlasMgr; 20 21 class GrAtlas { 22 public: 23 GrAtlas(GrAtlasMgr*, int plotX, int plotY, GrMaskFormat); 24 getPlotX()25 int getPlotX() const { return fPlot.fX; } getPlotY()26 int getPlotY() const { return fPlot.fY; } getMaskFormat()27 GrMaskFormat getMaskFormat() const { return fMaskFormat; } 28 texture()29 GrTexture* texture() const { return fTexture; } 30 31 bool addSubImage(int width, int height, const void*, GrIPoint16*); 32 FreeLList(GrAtlas * atlas)33 static void FreeLList(GrAtlas* atlas) { 34 while (atlas) { 35 GrAtlas* next = atlas->fNext; 36 delete atlas; 37 atlas = next; 38 } 39 } 40 41 // testing nextAtlas()42 GrAtlas* nextAtlas() const { return fNext; } 43 44 private: 45 ~GrAtlas(); // does not try to delete the fNext field 46 47 GrAtlas* fNext; 48 GrTexture* fTexture; 49 GrRectanizer* fRects; 50 GrAtlasMgr* fAtlasMgr; 51 GrIPoint16 fPlot; 52 GrMaskFormat fMaskFormat; 53 54 friend class GrAtlasMgr; 55 }; 56 57 class GrPlotMgr; 58 59 class GrAtlasMgr { 60 public: 61 GrAtlasMgr(GrGpu*); 62 ~GrAtlasMgr(); 63 64 GrAtlas* addToAtlas(GrAtlas*, int width, int height, const void*, 65 GrMaskFormat, GrIPoint16*); 66 getTexture(GrMaskFormat format)67 GrTexture* getTexture(GrMaskFormat format) const { 68 GrAssert((unsigned)format < kCount_GrMaskFormats); 69 return fTexture[format]; 70 } 71 72 // to be called by ~GrAtlas() 73 void freePlot(int x, int y); 74 75 private: 76 GrGpu* fGpu; 77 GrTexture* fTexture[kCount_GrMaskFormats]; 78 GrPlotMgr* fPlotMgr; 79 }; 80 81 #endif 82