164 lines
5.3 KiB
C
164 lines
5.3 KiB
C
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/***************************************************************************/
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/* */
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/* ftmm.h */
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/* */
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/* FreeType Multiple-Master interface. */
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/* */
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/* */
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/* Copyright 1996-2000 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 <freetype/t1tables.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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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
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* for multiple masters fonts..
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*
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* <Fields>
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* name :: axis' name
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* minimum :: axis' minimum design coordinate
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* maximum :: axis's maximum design coordinate
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*
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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 axis and space of a multiple
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* masters font.
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*
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* <Fields>
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* num_axis :: number of axis. 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
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* this number cannot exceed 16
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*
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* axis :: an table of axis descriptors..
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*
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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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typedef FT_Error (*FT_Get_MM_Func)( FT_Face face, FT_Multi_Master* master );
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typedef FT_Error (*FT_Set_MM_Design_Func)( FT_Face face,
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FT_UInt num_coords,
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FT_Long* coords );
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typedef FT_Error (*FT_Set_MM_Blend_Func)( 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_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 :: handle to source face
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*
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* <Output>
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* master :: multiple masters descriptor
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*
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* <Return>
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* Error code. 0 means success.
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*
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*/
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FT_EXPORT_DEF(FT_Error) FT_Get_Multi_Master( FT_Face face,
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FT_Multi_Master* master );
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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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* <Input>
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* face :: handle to source face
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* num_coords :: number of design coordinates (must be equal to the
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* number of axis in the font).
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* coords :: design coordinates
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*
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* <Return>
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* Error code. 0 means success.
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*
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*/
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FT_EXPORT_DEF(FT_Error) 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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* <Input>
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* face :: handle to source face
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* num_coords :: number of design coordinates (must be equal to the
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* number of axis in the font).
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* coords :: design coordinates (each one must be between 0 and 1.0)
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*
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* <Return>
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* Error code. 0 means success.
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*
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*/
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FT_EXPORT_DEF(FT_Error) 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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#ifdef __cplusplus
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}
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#endif
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#endif /* FTMM_H */
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/* END */
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