1 /* 2 * Copyright 2010 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef GrTextContext_DEFINED 9 #define GrTextContext_DEFINED 10 11 #include "GrGlyph.h" 12 #include "GrPaint.h" 13 #include "SkDeviceProperties.h" 14 15 #include "SkPostConfig.h" 16 17 class GrContext; 18 class GrDrawTarget; 19 class GrFontScaler; 20 21 /* 22 * This class wraps the state for a single text render 23 */ 24 class GrTextContext { 25 public: 26 virtual ~GrTextContext() {} 27 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], size_t byteLength, 28 SkScalar x, SkScalar y) = 0; 29 virtual void drawPosText(const GrPaint&, const SkPaint&, 30 const char text[], size_t byteLength, 31 const SkScalar pos[], SkScalar constY, 32 int scalarsPerPosition) = 0; 33 34 virtual bool canDraw(const SkPaint& paint) = 0; 35 36 protected: 37 GrTextContext(GrContext*, const SkDeviceProperties&); 38 39 static GrFontScaler* GetGrFontScaler(SkGlyphCache* cache); 40 static void MeasureText(SkGlyphCache* cache, SkDrawCacheProc glyphCacheProc, 41 const char text[], size_t byteLength, SkVector* stopVector); 42 43 void init(const GrPaint&, const SkPaint&); 44 void finish() { fDrawTarget = NULL; } 45 46 GrContext* fContext; 47 SkDeviceProperties fDeviceProperties; 48 49 GrDrawTarget* fDrawTarget; 50 SkIRect fClipRect; 51 GrPaint fPaint; 52 SkPaint fSkPaint; 53 }; 54 55 #endif 56
