michael@0: /*
michael@0:  * Copyright 2010 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef GrFontScaler_DEFINED
michael@0: #define GrFontScaler_DEFINED
michael@0: 
michael@0: #include "GrGlyph.h"
michael@0: #include "GrKey.h"
michael@0: 
michael@0: class SkPath;
michael@0: 
michael@0: /**
michael@0:  *  This is a virtual base class which Gr's interface to the host platform's
michael@0:  *  font scaler.
michael@0:  *
michael@0:  *  The client is responsible for subclassing, and instantiating this. The
michael@0:  *  instance is create for a specific font+size+matrix.
michael@0:  */
michael@0: class GrFontScaler : public SkRefCnt {
michael@0: public:
michael@0:     SK_DECLARE_INST_COUNT(GrFontScaler)
michael@0: 
michael@0:     virtual const GrKey* getKey() = 0;
michael@0:     virtual GrMaskFormat getMaskFormat() = 0;
michael@0:     virtual bool getPackedGlyphBounds(GrGlyph::PackedID, SkIRect* bounds) = 0;
michael@0:     virtual bool getPackedGlyphImage(GrGlyph::PackedID, int width, int height,
michael@0:                                      int rowBytes, void* image) = 0;
michael@0:     virtual bool getGlyphPath(uint16_t glyphID, SkPath*) = 0;
michael@0: 
michael@0: private:
michael@0:     typedef SkRefCnt INHERITED;
michael@0: };
michael@0: 
michael@0: #endif