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/***************************************************************************/
/* */
/* ftautoh.h */
/* */
/* FreeType API for setting and accessing auto-hinter properties */
/* (specification). */
/* */
/* Copyright 2012 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. */
/* */
/***************************************************************************/
#ifndef __FTAUTOH_H__
#define __FTAUTOH_H__
#include <ft2build.h>
#include FT_FREETYPE_H
#ifdef FREETYPE_H
#error "freetype.h of FreeType 1 has been loaded!"
#error "Please fix the directory search order for header files"
#error "so that freetype.h of FreeType 2 is found first."
#endif
FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* <Section> */
/* autohinter */
/* */
/* <Title> */
/* The Auto-hinter */
/* */
/* <Abstract> */
/* Controlling the behaviour of the auto-hinting engine. */
/* */
/* <Description> */
/* This section contains the declaration of functions specific to the */
/* auto-hinter. */
/* */
/*************************************************************************/
/**********************************************************************
*
* @enum:
* FT_AUTOHINTER_XXX
*
* @description:
* A list of bit-field constants used with
* @FT_Library_GetAutohinterProperties,
* @FT_Face_GetAutohinterProperties,
* @FT_Library_SetAutohinterProperties, and
* @FT_Face_SetAutohinterProperties to control the behaviour of the
* auto-hinter.
*
* @values:
* FT_AUTOHINTER_DEFAULT::
* Corresponding to~0, this value indicates the default value.
*
* FT_AUTOHINTER_INCREASE_GLYPH_HEIGHTS ::
* For glyphs in the size range 5 < PPEM < 15, round up the glyph
* height much more often than normally.
*/
#define FT_AUTOHINTER_DEFAULT 0x0
#define FT_AUTOHINTER_INCREASE_GLYPH_HEIGHTS ( 1L << 0 )
/**********************************************************************
*
* @function:
* FT_Library_GetAutohinterProperties
*
* @description:
* Retrieve the global property flags which control the behaviour of the
* auto-hinter.
*
* @output:
* properties ::
* The current global auto-hinter property flags, consisting of
* @FT_AUTOHINTER_XXX constants which are ORed together.
*
* Use @FT_Face_GetAutohinterProperties to retrieve the local
* properties of a face.
*
* @return:
* FreeType error code. 0~means success.
*/
FT_EXPORT( FT_Error )
FT_Library_GetAutohinterProperties( FT_Library library,
FT_Int32 *properties );
/**********************************************************************
*
* @function:
* FT_Library_SetAutohinterProperties
*
* @description:
* Set the global property flags which control the behaviour of the
* auto-hinter.
*
* @input:
* properties ::
* The auto-hinter property flags to be set globally, consisting of
* @FT_AUTOHINTER_XXX constants which are ORed together. All faces
* created after a call to this function inherit the new auto-hinter
* properties.
*
* Use @FT_Face_SetAutohinterProperties to override the properties
* locally.
*
* @return:
* FreeType error code. 0~means success.
*/
FT_EXPORT( FT_Error )
FT_Library_SetAutohinterProperties( FT_Library library,
FT_Int32 properties );
/**********************************************************************
*
* @function:
* FT_Face_GetAutohinterProperties
*
* @description:
* Retrieve the property flags which control the behaviour of the
* auto-hinter for the given face.
*
* @input:
* face ::
* A handle to the input face.
*
* @output:
* properties ::
* The current auto-hinter property flags of the given face,
* consisting of @FT_AUTOHINTER_XXX constants which are ORed
* together.
*
* @return:
* FreeType error code. 0~means success.
*
*/
FT_EXPORT( FT_Error )
FT_Face_GetAutohinterProperties( FT_Face face,
FT_Int32 *properties );
/**********************************************************************
*
* @function:
* FT_Face_SetAutohinterProperties
*
* @description:
* Set the property flags which control the behaviour of the autolhinter
* for the given face.
*
* @input:
* face ::
* A handle to the input face.
*
* properties ::
* The auto-hinter property flags to be set for the given face,
* consisting of @FT_AUTOHINTER_XXX constants which are ORed
* together.
*
* By default, a face inherits the global auto-hinter properties (set
* with @FT_Library_SetAutohinterProperties, if any) at the time of
* its creation. Using this function you can override them locally.
*
* @return:
* FreeType error code. 0~means success.
*/
FT_EXPORT( FT_Error )
FT_Face_SetAutohinterProperties( FT_Face face,
FT_Int32 properties );
/* */
FT_END_HEADER
#endif /* __FTAUTOH_H__ */
/* END */
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