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 GrTextContext_DEFINED 12 #define GrTextContext_DEFINED 13 14 #include "GrGlyph.h" 15 #include "GrPaint.h" 16 #include "GrMatrix.h" 17 18 struct GrGpuTextVertex; 19 class GrContext; 20 class GrTextStrike; 21 class GrFontScaler; 22 class GrDrawTarget; 23 24 class GrTextContext { 25 public: 26 GrTextContext(GrContext*, 27 const GrPaint& paint, 28 const GrMatrix* extMatrix = NULL); 29 ~GrTextContext(); 30 31 void drawPackedGlyph(GrGlyph::PackedID, GrFixed left, GrFixed top, 32 GrFontScaler*); 33 34 void flush(); // optional; automatically called by destructor 35 36 private: 37 GrPaint fPaint; 38 GrVertexLayout fVertexLayout; 39 GrContext* fContext; 40 GrDrawTarget* fDrawTarget; 41 42 GrMatrix fExtMatrix; 43 GrFontScaler* fScaler; 44 GrTextStrike* fStrike; 45 46 inline void flushGlyphs(); 47 void setupDrawTarget(); 48 49 enum { 50 kMinRequestedGlyphs = 1, 51 kDefaultRequestedGlyphs = 64, 52 kMinRequestedVerts = kMinRequestedGlyphs * 4, 53 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4, 54 }; 55 56 GrGpuTextVertex* fVertices; 57 58 int32_t fMaxVertices; 59 GrTexture* fCurrTexture; 60 int fCurrVertex; 61 62 GrIRect fClipRect; 63 GrMatrix fOrigViewMatrix; // restore previous viewmatrix 64 }; 65 66 #endif 67 68 69
