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David Turner 2001-10-08 20:46:37 +00:00
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commit 4c647903b5
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include/freetype/ftsizes.h Normal file
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/***************************************************************************/
/* */
/* ftsizes.h */
/* */
/* FreeType size objects management (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. */
/* */
/***************************************************************************/
/*************************************************************************/
/* */
/* Typical application would normally not need to use these functions */
/* however, they've been placed in a public API for the rare cases */
/* where they're needed.. */
/* */
/*************************************************************************/
#ifndef __FTSIZES_H__
#define __FTSIZES_H__
#include <ft2build.h>
#include FT_FREETYPE_H
FT_BEGIN_HEADER
/*************************************************************************/
/* */
/* <Section> */
/* sizes_management */
/* */
/* <Title> */
/* Size management */
/* */
/* <Abstract> */
/* Managing multiple sizes per face */
/* */
/* <Description> */
/* When creating a new face object (e.g. with @FT_New_Face), a */
/* @FT_Size object is automatically created and used to store all */
/* pixel-size dependent information, available in the "face->size" */
/* field. */
/* */
/* It is however possible to create more sizes for a given face, */
/* mostly in order to manage several character pixel sizes of the */
/* same font family and style. See @FT_New_Size and @FT_Done_Size */
/* */
/* note that @FT_Set_Pixel_Sizes and @FT_Set_Character_Size only */
/* modify the content of the current "active" size, you'll thus need */
/* to use @FT_Activate_Size to change it.. */
/* */
/* 99% of applications won't need the functions provided here, */
/* especially if they use the caching sub-system, so be cautious */
/* when using these.. */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* <Function> */
/* FT_New_Size */
/* */
/* <Description> */
/* Creates a new size object from a given face object. */
/* */
/* <Input> */
/* face :: A handle to a parent face object. */
/* */
/* <Output> */
/* asize :: A handle to a new size object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
/* <Note> */
/* You need to call FT_Activate_Size in order to select the new */
/* size for upcoming calls to @FT_Set_Pixel_Sizes, @FT_Set_Char_Size, */
/* @FT_Load_Glyph, @FT_Load_Char, etc.. */
/* */
FT_EXPORT( FT_Error )
FT_New_Size( FT_Face face,
FT_Size* size );
/*************************************************************************/
/* */
/* <Function> */
/* FT_Done_Size */
/* */
/* <Description> */
/* Discards a given size object. */
/* */
/* <Input> */
/* size :: A handle to a target size object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
FT_EXPORT( FT_Error )
FT_Done_Size( FT_Size size );
/*************************************************************************/
/* */
/* <Function> */
/* FT_Activate_Size */
/* */
/* <Description> */
/* even though it is possible to create several size objects for a */
/* given face (see @FT_New_Size for details), functions like */
/* @FT_Load_Glyph or @FT_Load_Char only use the last-created one */
/* to determine the "current character pixel size. */
/* */
/* this function can be used to "activate" a previous size object */
/* */
/* <Input> */
/* size :: A handle to a target size object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
/* <Note> */
/* if "face" is the size's parent face object, this function changes */
/* the value of "face->size" to the input size handle. */
/* */
FT_EXPORT( FT_Error )
FT_Activate_Size( FT_Size size );
/* */
FT_END_HEADER
#endif /* __FTSIZES_H__ */
/* END */