118 lines
4.2 KiB
C
118 lines
4.2 KiB
C
|
/***************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* autohint.h */
|
||
|
|
/* */
|
||
|
|
/* High-level `autohint" driver interface (specification) */
|
||
|
|
/* */
|
||
|
|
/* Copyright 1996-2000 by */
|
||
|
|
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
|
||
|
|
/* */
|
||
|
|
/* This file is part of the FreeType project, and may only be used, */
|
||
|
|
/* modified, and distributed under the terms of the FreeType project */
|
||
|
|
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
|
||
|
|
/* this file you indicate that you have read the license and */
|
||
|
|
/* understand and accept it fully. */
|
||
|
|
/* */
|
||
|
|
/* */
|
||
|
|
/* The auto-hinter is used to load and automatically hint glyphs */
|
||
|
|
/* when a format-specific hinter isn't available.. */
|
||
|
|
/* */
|
||
|
|
/***************************************************************************/
|
||
|
|
|
||
|
|
#ifndef AUTOHINT_H
|
||
|
|
#define AUTOHINT_H
|
||
|
|
|
||
|
|
#include <freetype.h>
|
||
|
|
|
||
|
|
/***********************************************************************
|
||
|
|
*
|
||
|
|
* <FuncType>
|
||
|
|
* FT_AutoHinter_Init_Func
|
||
|
|
*
|
||
|
|
* <Description>
|
||
|
|
* Each face can have its own auto-hinter object. This function
|
||
|
|
* is used to initialise it. Its role is to perform a few statistics
|
||
|
|
* on the face's content in order to compute global metrics like
|
||
|
|
* blue zones and standard width/heights.
|
||
|
|
*
|
||
|
|
* <Input>
|
||
|
|
* face :: handle to the face.
|
||
|
|
*
|
||
|
|
* <Note>
|
||
|
|
* this function will call FT_Load_Glyph several times in order to
|
||
|
|
* compute various statistics on the face's glyphs. This means that
|
||
|
|
* the face handle must be valid when calling it.
|
||
|
|
*
|
||
|
|
* This function set the "hinter" and "hinter_len" fields of 'face'.
|
||
|
|
*/
|
||
|
|
typedef FT_Error (*FT_AutoHinter_Init_Func)( FT_Face face );
|
||
|
|
|
||
|
|
|
||
|
|
/***********************************************************************
|
||
|
|
*
|
||
|
|
* <FuncType>
|
||
|
|
* FT_AutoHinter_Done_Func
|
||
|
|
*
|
||
|
|
* <Description>
|
||
|
|
* Each face can have its own auto-hinter object. This function
|
||
|
|
* is used to finalise and destroy it.
|
||
|
|
*
|
||
|
|
* <Input>
|
||
|
|
* face :: handle to the face.
|
||
|
|
*
|
||
|
|
* <Note>
|
||
|
|
* This function clears the "hinter" and "hinter_len" fields of
|
||
|
|
* "face". However, the face object is still valid and can be used
|
||
|
|
* to load un-hinted glyphs..
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
typedef void (*FT_AutoHinter_Done_Func)( FT_Face face );
|
||
|
|
|
||
|
|
|
||
|
|
/***********************************************************************
|
||
|
|
*
|
||
|
|
* <FuncType>
|
||
|
|
* FT_AutoHinter_Load_Func
|
||
|
|
*
|
||
|
|
* <Description>
|
||
|
|
* This function is used to load, scale and automatically hint a glyph
|
||
|
|
* from a given face.
|
||
|
|
*
|
||
|
|
* <Input>
|
||
|
|
* face :: handle to the face.
|
||
|
|
* glyph_index :: glyph index
|
||
|
|
* load_flags :: load flags
|
||
|
|
*
|
||
|
|
* <Note>
|
||
|
|
* This function is capable of loading composite glyphs by hinting
|
||
|
|
* each sub-glyph independently (which improves quality).
|
||
|
|
*
|
||
|
|
* It will call the font driver with FT_Load_Glyph, with FT_LOAD_NO_SCALE
|
||
|
|
* set..
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
typedef FT_Error (*FT_AutoHinter_Load_Func)( FT_Face face,
|
||
|
|
FT_UInt glyph_index,
|
||
|
|
FT_ULong load_flags );
|
||
|
|
|
||
|
|
/***********************************************************************
|
||
|
|
*
|
||
|
|
* <Struct>
|
||
|
|
* FT_AutoHinter_Interface
|
||
|
|
*
|
||
|
|
* <Description>
|
||
|
|
* The auto-hinter module's interface.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
typedef struct FT_AutoHinter_Interface
|
||
|
|
{
|
||
|
|
FT_AutoHinter_Init_Func init_autohinter;
|
||
|
|
FT_AutoHinter_Done_Func done_autohinter;
|
||
|
|
FT_AutoHinter_Load_Func load_glyph;
|
||
|
|
|
||
|
|
} FT_AutoHinter_Interface;
|
||
|
|
|
||
|
|
#endif /* AUTOHINT_H */
|
||
|
|
|
||
|
|
|