1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/GrDistanceFieldTextContext.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,54 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef GrDistanceFieldTextContext_DEFINED
1.12 +#define GrDistanceFieldTextContext_DEFINED
1.13 +
1.14 +#include "GrTextContext.h"
1.15 +
1.16 +class GrTextStrike;
1.17 +
1.18 +/*
1.19 + * This class implements GrTextContext using distance field fonts
1.20 + */
1.21 +class GrDistanceFieldTextContext : public GrTextContext {
1.22 +public:
1.23 + GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&);
1.24 + virtual ~GrDistanceFieldTextContext();
1.25 +
1.26 + virtual void drawText(const GrPaint&, const SkPaint&, const char text[], size_t byteLength,
1.27 + SkScalar x, SkScalar y) SK_OVERRIDE;
1.28 + virtual void drawPosText(const GrPaint&, const SkPaint&,
1.29 + const char text[], size_t byteLength,
1.30 + const SkScalar pos[], SkScalar constY,
1.31 + int scalarsPerPosition) SK_OVERRIDE;
1.32 +
1.33 + virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;
1.34 +
1.35 +private:
1.36 + GrTextStrike* fStrike;
1.37 + SkScalar fTextRatio;
1.38 +
1.39 + void init(const GrPaint&, const SkPaint&);
1.40 + void drawPackedGlyph(GrGlyph::PackedID, GrFixed left, GrFixed top, GrFontScaler*);
1.41 + void flushGlyphs(); // automatically called by destructor
1.42 + void finish();
1.43 +
1.44 + enum {
1.45 + kMinRequestedGlyphs = 1,
1.46 + kDefaultRequestedGlyphs = 64,
1.47 + kMinRequestedVerts = kMinRequestedGlyphs * 4,
1.48 + kDefaultRequestedVerts = kDefaultRequestedGlyphs * 4,
1.49 + };
1.50 +
1.51 + SkPoint* fVertices;
1.52 + int32_t fMaxVertices;
1.53 + GrTexture* fCurrTexture;
1.54 + int fCurrVertex;
1.55 +};
1.56 +
1.57 +#endif
