forked from minhngoc25a/freetype2
199 lines
11 KiB
C
199 lines
11 KiB
C
/***************************************************************************/
|
|
/* */
|
|
/* ftmm.h */
|
|
/* */
|
|
/* FreeType Multiple Master font 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. */
|
|
/* */
|
|
/***************************************************************************/
|
|
|
|
|
|
#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 */
|