189 lines
11 KiB
C
189 lines
11 KiB
C
/***************************************************************************/
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/* */
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/* ftmm.h */
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/* */
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/* FreeType Multiple Master font interface (specification). */
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/* */
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/* Copyright 1996-2001 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __FTMM_H__
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#define __FTMM_H__
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#include <ft2build.h>
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#include FT_TYPE1_TABLES_H
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FT_BEGIN_HEADER
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/*************************************************************************/
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/* */
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/* <Section> */
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/* multiple_masters */
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/* */
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/* <Title> */
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/* Multiple Masters */
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/* */
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/* <Abstract> */
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/* How to manage Multiple Masters fonts. */
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/* */
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/* <Description> */
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/* The following types and functions are used to manage Multiple */
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/* Master fonts, i.e. the selection of specific design instances by */
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/* setting design axis coordinates. */
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/* */
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_MM_Axis */
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/* */
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/* <Description> */
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/* A simple structure used to model a given axis in design space for */
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/* Multiple Masters fonts. */
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/* */
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/* <Fields> */
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/* name :: The axis's name. */
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/* */
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/* minimum :: The axis's minimum design coordinate. */
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/* */
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/* maximum :: The axis's maximum design coordinate. */
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/* */
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typedef struct FT_MM_Axis_
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{
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FT_String* name;
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FT_Long minimum;
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FT_Long maximum;
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} FT_MM_Axis;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_Multi_Master */
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/* */
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/* <Description> */
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/* A structure used to model the axes and space of a Multiple Masters */
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/* font. */
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/* */
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/* <Fields> */
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/* num_axis :: Number of axes. Cannot exceed 4. */
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/* */
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/* num_designs :: Number of designs; should ne normally 2^num_axis */
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/* even though the Type 1 specification strangely */
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/* allows for intermediate designs to be present. This */
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/* number cannot exceed 16. */
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/* */
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/* axis :: A table of axis descriptors. */
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/* */
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typedef struct FT_Multi_Master_
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{
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FT_UInt num_axis;
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FT_UInt num_designs;
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FT_MM_Axis axis[T1_MAX_MM_AXIS];
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} FT_Multi_Master;
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/* */
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Get_Multi_Master */
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/* */
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/* <Description> */
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/* Retrieves the Multiple Master descriptor of a given font. */
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/* */
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/* <Input> */
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/* face :: A handle to the source face. */
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/* */
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/* <Output> */
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/* amaster :: The Multiple Masters descriptor. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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FT_EXPORT( FT_Error )
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FT_Get_Multi_Master( FT_Face face,
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FT_Multi_Master *amaster );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Set_MM_Design_Coordinates */
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/* */
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/* <Description> */
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/* For Multiple Masters fonts, choose an interpolated font design */
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/* through design coordinates. */
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/* */
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/* <InOut> */
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/* face :: A handle to the source face. */
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/* */
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/* <Input> */
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/* num_coords :: The number of design coordinates (must be equal to */
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/* the number of axes in the font). */
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/* */
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/* coords :: An array of design coordinates. */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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FT_EXPORT( FT_Error )
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FT_Set_MM_Design_Coordinates( FT_Face face,
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FT_UInt num_coords,
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FT_Long* coords );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Set_MM_Blend_Coordinates */
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/* */
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/* <Description> */
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/* For Multiple Masters fonts, choose an interpolated font design */
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/* through normalized blend coordinates. */
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/* */
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/* <InOut> */
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/* face :: A handle to the source face. */
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/* */
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/* <Input> */
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/* num_coords :: The number of design coordinates (must be equal to */
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/* the number of axes in the font). */
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/* */
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/* coords :: The design coordinates array (each element must be */
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/* between 0 and 1.0). */
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/* */
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/* <Return> */
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/* FreeType error code. 0 means success. */
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/* */
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FT_EXPORT( FT_Error )
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FT_Set_MM_Blend_Coordinates( FT_Face face,
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FT_UInt num_coords,
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FT_Fixed* coords );
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/* */
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FT_END_HEADER
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#endif /* __FTMM_H__ */
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/* END */
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