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 /*

  * 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 create for a specific font+size+matrix.

  */

 class GrFontScaler : public SkRefCnt {

 public:

     SK_DECLARE_INST_COUNT(GrFontScaler)

     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;

     virtual bool getGlyphPath(uint16_t glyphID, SkPath*) = 0;

 private:

     typedef SkRefCnt INHERITED;

 };

 #endif