forked from minhngoc25a/freetype2
177 lines
8.2 KiB
C
177 lines
8.2 KiB
C
/***************************************************************************/
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/* */
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/* ftmm.c */
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/* */
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/* Multiple Master font support (body). */
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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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#include <freetype/ftmm.h>
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#include <freetype/internal/ftobjs.h>
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/*************************************************************************/
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/* */
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/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_mm
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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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/* master :: 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_DEF( FT_Error ) FT_Get_Multi_Master( FT_Face face,
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FT_Multi_Master *amaster )
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{
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FT_Error error;
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if ( !face )
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return FT_Err_Invalid_Face_Handle;
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error = FT_Err_Invalid_Argument;
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if ( FT_HAS_MULTIPLE_MASTERS( face ) )
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{
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FT_Driver driver = face->driver;
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FT_Get_MM_Func func;
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func = (FT_Get_MM_Func)driver->root.clazz->get_interface(
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FT_MODULE( driver ), "get_mm" );
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if ( func )
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error = func( face, amaster );
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}
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return error;
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}
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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 :: A handle to the source face. */
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/* */
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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. */
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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_DEF( FT_Error ) FT_Set_MM_Design_Coordinates(
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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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FT_Error error;
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if ( !face )
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return FT_Err_Invalid_Face_Handle;
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error = FT_Err_Invalid_Argument;
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if ( FT_HAS_MULTIPLE_MASTERS( face ) )
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{
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FT_Driver driver = face->driver;
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FT_Set_MM_Design_Func func;
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func = (FT_Set_MM_Design_Func)driver->root.clazz->get_interface(
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FT_MODULE( driver ), "set_mm_design" );
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if ( func )
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error = func( face, num_coords, coords );
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}
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return error;
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}
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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 :: A handle to the source face. */
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/* */
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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 (each one must be between 0 */
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/* 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_DEF( FT_Error ) FT_Set_MM_Blend_Coordinates(
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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_Error error;
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if ( !face )
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return FT_Err_Invalid_Face_Handle;
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error = FT_Err_Invalid_Argument;
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if ( FT_HAS_MULTIPLE_MASTERS( face ) )
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{
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FT_Driver driver = face->driver;
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FT_Set_MM_Blend_Func func;
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func = (FT_Set_MM_Blend_Func)driver->root.clazz->get_interface(
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FT_MODULE( driver ), "set_mm_blend" );
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if ( func )
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error = func( face, num_coords, coords );
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}
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return error;
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}
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/* END */
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