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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrDistanceFieldTextContext_DEFINED
#define GrDistanceFieldTextContext_DEFINED
#include "GrTextContext.h"
class GrTextStrike;
/*
* This class implements GrTextContext using distance field fonts
*/
class GrDistanceFieldTextContext : public GrTextContext {
public:
virtual void drawPackedGlyph(GrGlyph::PackedID, GrFixed left, GrFixed top,
GrFontScaler*) SK_OVERRIDE;
void drawText(const char text[], size_t byteLength,
SkScalar x, SkScalar y, SkGlyphCache*, GrFontScaler*);
void drawPosText(const char text[], size_t byteLength,
const SkScalar pos[], SkScalar constY,
int scalarsPerPosition,
SkGlyphCache* cache, GrFontScaler* fontScaler);
const SkPaint& getSkPaint() { return fSkPaint; }
private:
GrDistanceFieldTextContext(GrContext*, const GrPaint&, const SkPaint&);
virtual ~GrDistanceFieldTextContext();
friend class GrTTextContextManager<GrDistanceFieldTextContext>;
GrTextStrike* fStrike;
SkScalar fTextRatio;
void flushGlyphs(); // automatically called by destructor
enum {
kMinRequestedGlyphs = 1,
kDefaultRequestedGlyphs = 64,
kMinRequestedVerts = kMinRequestedGlyphs * 4,
kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4,
};
SkPoint* fVertices;
int32_t fMaxVertices;
GrTexture* fCurrTexture;
int fCurrVertex;
};
#endif
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