| /***************************************************************************/ |
| /* */ |
| /* 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 */ |
