freetype2/include/freetype/ftt1drv.h

124 lines
3.8 KiB
C

/***************************************************************************/
/* */
/* ftt1drv.h */
/* */
/* FreeType API for controlling the Type 1 driver (specification only). */
/* */
/* Copyright 2017 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 FTT1DRV_H_
#define FTT1DRV_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
/**************************************************************************
*
* @property:
* hinting-engine[type1]
*
* @description:
* Thanks to Adobe, which contributed a new hinting (and parsing)
* engine, an application can select between `freetype' and `adobe' if
* compiled with T1_CONFIG_OPTION_OLD_ENGINE. If this configuration
* macro isn't defined, `hinting-engine' does nothing.
*
* The default engine is `freetype' if T1_CONFIG_OPTION_OLD_ENGINE is
* defined, and `adobe' otherwise.
*
* The following example code demonstrates how to select Adobe's hinting
* engine (omitting the error handling).
*
* {
* FT_Library library;
* FT_UInt hinting_engine = FT_T1_HINTING_ADOBE;
*
*
* FT_Init_FreeType( &library );
*
* FT_Property_Set( library, "type1",
* "hinting-engine", &hinting_engine );
* }
*
* @note:
* This property can be used with @FT_Property_Get also.
*
* This property can be set via the `FREETYPE_PROPERTIES' environment
* variable (using values `adobe' or `freetype').
*
* @since:
* 2.8.2
*
*/
/**************************************************************************
*
* @enum:
* FT_T1_HINTING_XXX
*
* @description:
* A list of constants used for the @hinting-engine[type1] property to
* select the hinting engine for Type 1 fonts.
*
* @values:
* FT_T1_HINTING_FREETYPE ::
* Use the old FreeType hinting engine.
*
* FT_T1_HINTING_ADOBE ::
* Use the hinting engine contributed by Adobe.
*
* @since:
* 2.8.2
*
*/
#define FT_T1_HINTING_FREETYPE 0
#define FT_T1_HINTING_ADOBE 1
/**************************************************************************
*
* @constant:
* FT_PARAM_TAG_RANDOM_SEED
*
* @description:
* An @FT_Parameter tag to be used with @FT_Face_Properties. The
* corresponding 32bit signed integer argument overrides the CFF
* module's random seed value with a face-specific one; see
* @random-seed.
*
*/
#define FT_PARAM_TAG_RANDOM_SEED \
FT_MAKE_TAG( 's', 'e', 'e', 'd' )
/* */
FT_END_HEADER
#endif /* FTT1DRV_H_ */
/* END */