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/***************************************************************************/
/* */
/* ftmm.h */
/* */
/* FreeType Multiple Master font interface (specification). */
/* */
/* Copyright 1996-2001 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 __FTMM_H__
#define __FTMM_H__
#include <ft2build.h>
#include FT_TYPE1_TABLES_H
FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* <Section> */
/* multiple_masters */
/* */
/* <Title> */
/* Multiple Masters */
/* */
/* <Abstract> */
/* How to manage Multiple Masters fonts. */
/* */
/* <Description> */
/* The following types and functions are used to manage Multiple */
/* Master fonts, i.e. the selection of specific design instances by */
/* setting design axis coordinates. */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* <Struct> */
/* FT_MM_Axis */
/* */
/* <Description> */
/* A simple structure used to model a given axis in design space for */
/* Multiple Masters fonts. */
/* */
/* <Fields> */
/* name :: The axis's name. */
/* */
/* minimum :: The axis's minimum design coordinate. */
/* */
/* maximum :: The axis's maximum design coordinate. */
/* */
typedef struct FT_MM_Axis_
{
FT_String* name;
FT_Long minimum;
FT_Long maximum;
} FT_MM_Axis;
/*************************************************************************/
/* */
/* <Struct> */
/* FT_Multi_Master */
/* */
/* <Description> */
/* A structure used to model the axes and space of a Multiple Masters */
/* font. */
/* */
/* <Fields> */
/* num_axis :: Number of axes. Cannot exceed 4. */
/* */
/* num_designs :: Number of designs; should ne normally 2^num_axis */
/* even though the Type 1 specification strangely */
/* allows for intermediate designs to be present. This */
/* number cannot exceed 16. */
/* */
/* axis :: A table of axis descriptors. */
/* */
typedef struct FT_Multi_Master_
{
FT_UInt num_axis;
FT_UInt num_designs;
FT_MM_Axis axis[T1_MAX_MM_AXIS];
} FT_Multi_Master;
/* */
typedef FT_Error
(*FT_Get_MM_Func)( FT_Face face,
FT_Multi_Master* master );
typedef FT_Error
(*FT_Set_MM_Design_Func)( FT_Face face,
FT_UInt num_coords,
FT_Long* coords );
typedef FT_Error
(*FT_Set_MM_Blend_Func)( FT_Face face,
FT_UInt num_coords,
FT_Long* coords );
/*************************************************************************/
/* */
/* <Function> */
/* FT_Get_Multi_Master */
/* */
/* <Description> */
/* Retrieves the Multiple Master descriptor of a given font. */
/* */
/* <Input> */
/* face :: A handle to the source face. */
/* */
/* <Output> */
/* amaster :: The Multiple Masters descriptor. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
FT_EXPORT( FT_Error )
FT_Get_Multi_Master( FT_Face face,
FT_Multi_Master *amaster );
/*************************************************************************/
/* */
/* <Function> */
/* FT_Set_MM_Design_Coordinates */
/* */
/* <Description> */
/* For Multiple Masters fonts, choose an interpolated font design */
/* through design coordinates. */
/* */
/* <InOut> */
/* face :: A handle to the source face. */
/* */
/* <Input> */
/* num_coords :: The number of design coordinates (must be equal to */
/* the number of axes in the font). */
/* */
/* coords :: An array of design coordinates. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
FT_EXPORT( FT_Error )
FT_Set_MM_Design_Coordinates( FT_Face face,
FT_UInt num_coords,
FT_Long* coords );
/*************************************************************************/
/* */
/* <Function> */
/* FT_Set_MM_Blend_Coordinates */
/* */
/* <Description> */
/* For Multiple Masters fonts, choose an interpolated font design */
/* through normalized blend coordinates. */
/* */
/* <InOut> */
/* face :: A handle to the source face. */
/* */
/* <Input> */
/* num_coords :: The number of design coordinates (must be equal to */
/* the number of axes in the font). */
/* */
/* coords :: The design coordinates array (each element must be */
/* between 0 and 1.0). */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
FT_EXPORT( FT_Error )
FT_Set_MM_Blend_Coordinates( FT_Face face,
FT_UInt num_coords,
FT_Fixed* coords );
/* */
FT_END_HEADER
#endif /* __FTMM_H__ */
/* END */
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