1 /* 2 * Copyright 2013 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 GrBitmapTextContext_DEFINED 9 #define GrBitmapTextContext_DEFINED 10 11 #include "GrTextContext.h" 12 13 class GrGeometryProcessor; 14 class GrTextStrike; 15 16 /* 17 * This class implements GrTextContext using standard bitmap fonts 18 */ 19 class GrBitmapTextContext : public GrTextContext { 20 public: 21 GrBitmapTextContext(GrContext*, const SkDeviceProperties&); 22 virtual ~GrBitmapTextContext(); 23 24 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], size_t byteLength, 25 SkScalar x, SkScalar y) SK_OVERRIDE; 26 virtual void drawPosText(const GrPaint&, const SkPaint&, 27 const char text[], size_t byteLength, 28 const SkScalar pos[], SkScalar constY, 29 int scalarsPerPosition) SK_OVERRIDE; 30 31 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE; 32 33 private: 34 GrTextStrike* fStrike; 35 36 void init(const GrPaint&, const SkPaint&); 37 void drawPackedGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontScaler*); 38 void flushGlyphs(); // automatically called by destructor 39 void finish(); 40 41 enum { 42 kMinRequestedGlyphs = 1, 43 kDefaultRequestedGlyphs = 64, 44 kMinRequestedVerts = kMinRequestedGlyphs * 4, 45 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, 46 }; 47 48 void* fVertices; 49 int32_t fMaxVertices; 50 GrTexture* fCurrTexture; 51 SkAutoTUnref<GrGeometryProcessor> fCachedGeometryProcessor; 52 // Used to check whether fCachedEffect is still valid. 53 uint32_t fEffectTextureUniqueID; 54 int fCurrVertex; 55 SkRect fVertexBounds; 56 }; 57 58 #endif 59
