michael@0: /*
michael@0:  * Copyright 2009 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 SkHarfBuzzFont_DEFINED
michael@0: #define SkHarfBuzzFont_DEFINED
michael@0: 
michael@0: extern "C" {
michael@0: #include "harfbuzz-shaper.h"
michael@0: //#include "harfbuzz-unicode.h"
michael@0: }
michael@0: 
michael@0: #include "SkTypes.h"
michael@0: 
michael@0: class SkPaint;
michael@0: class SkTypeface;
michael@0: 
michael@0: class SkHarfBuzzFont {
michael@0: public:
michael@0:     /** The subclass returns the typeface for this font, or NULL
michael@0:      */
michael@0:     virtual SkTypeface* getTypeface() const = 0;
michael@0:     /** The subclass sets the text related attributes of the paint.
michael@0:         e.g. textSize, typeface, textSkewX, etc.
michael@0:         All of the attributes that could effect how the text is measured.
michael@0:         Color information (e.g. color, xfermode, shader, etc.) are not required.
michael@0:      */
michael@0:     virtual void setupPaint(SkPaint*) const = 0;
michael@0: 
michael@0:     /** Implementation of HB_GetFontTableFunc, using SkHarfBuzzFont* as
michael@0:         the first parameter.
michael@0:      */
michael@0:     static HB_Error GetFontTableFunc(void* skharfbuzzfont, const HB_Tag tag,
michael@0:                                      HB_Byte* buffer, HB_UInt* len);
michael@0: 
michael@0:     static const HB_FontClass& GetFontClass();
michael@0: };
michael@0: 
michael@0: #endif