| /***************************************************************************/ |
| /* */ |
| /* ftmm.c */ |
| /* */ |
| /* Multiple Master font support (body). */ |
| /* */ |
| /* 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. */ |
| /* */ |
| /***************************************************************************/ |
| |
| |
| #include <freetype/ftmm.h> |
| #include <freetype/internal/ftobjs.h> |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| /* messages during execution. */ |
| /* */ |
| #undef FT_COMPONENT |
| #define FT_COMPONENT trace_mm |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* <Function> */ |
| /* FT_Get_Multi_Master */ |
| /* */ |
| /* <Description> */ |
| /* Retrieves the Multiple Master descriptor of a given font. */ |
| /* */ |
| /* <Input> */ |
| /* face :: A handle to the source face. */ |
| /* */ |
| /* <Output> */ |
| /* master :: The Multiple Masters descriptor. */ |
| /* */ |
| /* <Return> */ |
| /* FreeType error code. 0 means success. */ |
| /* */ |
| FT_EXPORT_FUNC( FT_Error ) FT_Get_Multi_Master( FT_Face face, |
| FT_Multi_Master* master ) |
| { |
| FT_Error error; |
| |
| |
| if ( !face ) |
| return FT_Err_Invalid_Face_Handle; |
| |
| error = FT_Err_Invalid_Argument; |
| |
| if ( FT_HAS_MULTIPLE_MASTERS( face ) ) |
| { |
| FT_Driver driver = face->driver; |
| FT_Get_MM_Func func; |
| |
| |
| func = (FT_Get_MM_Func)driver->root.clazz->get_interface( |
| FT_MODULE( driver ), "get_mm" ); |
| if ( func ) |
| error = func( face, master ); |
| } |
| |
| return error; |
| } |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* <Function> */ |
| /* FT_Set_MM_Design_Coordinates */ |
| /* */ |
| /* <Description> */ |
| /* For Multiple Masters fonts, choose an interpolated font design */ |
| /* through design coordinates. */ |
| /* */ |
| /* <Input> */ |
| /* face :: A handle to the source face. */ |
| /* */ |
| /* num_coords :: The number of design coordinates (must be equal to */ |
| /* the number of axes in the font). */ |
| /* */ |
| /* coords :: The design coordinates. */ |
| /* */ |
| /* <Return> */ |
| /* FreeType error code. 0 means success. */ |
| /* */ |
| FT_EXPORT_FUNC( FT_Error ) FT_Set_MM_Design_Coordinates( |
| FT_Face face, |
| FT_UInt num_coords, |
| FT_Long* coords ) |
| { |
| FT_Error error; |
| |
| |
| if ( !face ) |
| return FT_Err_Invalid_Face_Handle; |
| |
| error = FT_Err_Invalid_Argument; |
| |
| if ( FT_HAS_MULTIPLE_MASTERS( face ) ) |
| { |
| FT_Driver driver = face->driver; |
| FT_Set_MM_Design_Func func; |
| |
| |
| func = (FT_Set_MM_Design_Func)driver->root.clazz->get_interface( |
| FT_MODULE( driver ), "set_mm_design" ); |
| if ( func ) |
| error = func( face, num_coords, coords ); |
| } |
| |
| return error; |
| } |
| |
| |
| /*************************************************************************/ |
| /* */ |
| /* <Function> */ |
| /* FT_Set_MM_Blend_Coordinates */ |
| /* */ |
| /* <Description> */ |
| /* For Multiple Masters fonts, choose an interpolated font design */ |
| /* through normalized blend coordinates. */ |
| /* */ |
| /* <Input> */ |
| /* face :: A handle to the source face. */ |
| /* */ |
| /* num_coords :: The number of design coordinates (must be equal to */ |
| /* the number of axes in the font). */ |
| /* */ |
| /* coords :: The design coordinates (each one must be between 0 */ |
| /* and 1.0). */ |
| /* */ |
| /* <Return> */ |
| /* FreeType error code. 0 means success. */ |
| /* */ |
| FT_EXPORT_FUNC( FT_Error ) FT_Set_MM_Blend_Coordinates( |
| FT_Face face, |
| FT_UInt num_coords, |
| FT_Fixed* coords ) |
| { |
| FT_Error error; |
| |
| |
| if ( !face ) |
| return FT_Err_Invalid_Face_Handle; |
| |
| error = FT_Err_Invalid_Argument; |
| |
| if ( FT_HAS_MULTIPLE_MASTERS( face ) ) |
| { |
| FT_Driver driver = face->driver; |
| FT_Set_MM_Blend_Func func; |
| |
| |
| func = (FT_Set_MM_Blend_Func)driver->root.clazz->get_interface( |
| FT_MODULE( driver ), "set_mm_blend" ); |
| if ( func ) |
| error = func( face, num_coords, coords ); |
| } |
| |
| return error; |
| } |
| |
| |
| /* END */ |