ref: f28b7536ca6326972571849f03009f4552dc72f9
dir: /src/base/ftmm.c/
/***************************************************************************/
/* */
/* 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 */