blob: 0132d513042b543bbadffa4041a1b4562cbb3796 [file] [log] [blame]
* Copyright 2010 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrFontScaler_DEFINED
#define GrFontScaler_DEFINED
#include "GrGlyph.h"
#include "GrKey.h"
class SkPath;
* This is a virtual base class which Gr's interface to the host platform's
* font scaler.
* The client is responsible for subclassing, and instantiating this. The
* instance is created for a specific font+size+matrix.
class GrFontScaler : public SkRefCnt {
virtual const GrKey* getKey() = 0;
virtual GrMaskFormat getMaskFormat() = 0;
virtual bool getPackedGlyphBounds(GrGlyph::PackedID, SkIRect* bounds) = 0;
virtual bool getPackedGlyphImage(GrGlyph::PackedID, int width, int height,
int rowBytes, void* image) = 0;
// get bounds for distance field associated with packed ID
virtual bool getPackedGlyphDFBounds(GrGlyph::PackedID, SkIRect* bounds) = 0;
// copies distance field bytes into pre-allocated dfImage
// (should be width*height bytes in size)
virtual bool getPackedGlyphDFImage(GrGlyph::PackedID, int width, int height,
void* dfImage) = 0;
virtual bool getGlyphPath(uint16_t glyphID, SkPath*) = 0;
typedef SkRefCnt INHERITED;