2 * Copyright 2013 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 #ifndef GrDistanceFieldTextContext_DEFINED
9 #define GrDistanceFieldTextContext_DEFINED
11 #include "GrTextContext.h"
16 * This class implements GrTextContext using distance field fonts
18 class GrDistanceFieldTextContext : public GrTextContext {
20 GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&);
21 virtual ~GrDistanceFieldTextContext();
23 virtual void drawText(const GrPaint&, const SkPaint&, const char text[], size_t byteLength,
24 SkScalar x, SkScalar y) SK_OVERRIDE;
25 virtual void drawPosText(const GrPaint&, const SkPaint&,
26 const char text[], size_t byteLength,
27 const SkScalar pos[], SkScalar constY,
28 int scalarsPerPosition) SK_OVERRIDE;
30 virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;
33 GrTextStrike* fStrike;
36 void init(const GrPaint&, const SkPaint&);
37 void drawPackedGlyph(GrGlyph::PackedID, GrFixed left, GrFixed top, GrFontScaler*);
38 void flushGlyphs(); // automatically called by destructor
42 kMinRequestedGlyphs = 1,
43 kDefaultRequestedGlyphs = 64,
44 kMinRequestedVerts = kMinRequestedGlyphs * 4,
45 kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4,
50 GrTexture* fCurrTexture;