www.pudn.com > freetype.rar > ftsizes.h
/***************************************************************************/ /* */ /* 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 have been placed in a public API for the rare cases */ /* where they are needed. */ /* */ /*************************************************************************/ #ifndef __FTSIZES_H__ #define __FTSIZES_H__ #include "ft2build.h" #include "freetype/freetype.h" FT_BEGIN_HEADER /*************************************************************************/ /* */ /**/ /* sizes_management */ /* */ /* */ /* Size management */ /* */ /* <Abstract> */ /* Managing multiple sizes per face */ /* */ /* <Description> */ /* When creating a new face object (e.g. with @FT_New_Face), an */ /* @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_Char_Size only */ /* modify the contents of the current "active" size; you 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 previously created 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 */ </pre> <script src="/inc/gg_read2.js"></script><BR> <script src="http://s117.cnzz.com/stat.php?id=1236358&web_id=1236358&show=pic" language="JavaScript" charset="gb2312"></script> </body></html>