+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftcsbits.h */
-/* */
-/* A small-bitmap cache (specification). */
-/* */
-/* Copyright 2000-2001 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. */
-/* */
-/***************************************************************************/
-
-
-#ifndef __FTCSBITS_H__
-#define __FTCSBITS_H__
-
-
-#include <ft2build.h>
-#include FT_CACHE_H
-#include FT_CACHE_INTERNAL_CHUNK_H
-#include FT_CACHE_IMAGE_H
-
-
-FT_BEGIN_HEADER
-
-
- /*************************************************************************/
- /* */
- /* <Section> */
- /* cache_subsystem */
- /* */
- /*************************************************************************/
-
-
- /*************************************************************************/
- /* */
- /* <Type> */
- /* FTC_SBit */
- /* */
- /* <Description> */
- /* A handle to a small bitmap descriptor. See the FTC_SBitRec */
- /* structure for details. */
- /* */
- typedef struct FTC_SBitRec_* FTC_SBit;
-
-
- /*************************************************************************/
- /* */
- /* <Type> */
- /* FTC_SBit_Cache */
- /* */
- /* <Description> */
- /* A handle to a small bitmap cache. These are special cache objects */
- /* used to store small glyph bitmaps (and anti-aliased pixmaps) in a */
- /* much more efficient way than the traditional glyph image cache */
- /* implemented by FTC_Image_Cache. */
- /* */
- typedef struct FTC_SBit_CacheRec_* FTC_SBit_Cache;
-
-
- /*************************************************************************/
- /* */
- /* <Struct> */
- /* FTC_SBitRec */
- /* */
- /* <Description> */
- /* A very compact structure used to describe a small glyph bitmap. */
- /* */
- /* <Fields> */
- /* width :: The bitmap width in pixels. */
- /* */
- /* height :: The bitmap height in pixels. */
- /* */
- /* left :: The horizontal distance from the pen position to the */
- /* left bitmap border (a.k.a. `left side bearing', or */
- /* `lsb'). */
- /* */
- /* top :: The vertical distance from the pen position (on the */
- /* baseline) to the upper bitmap border (a.k.a. `top side */
- /* bearing'). The distance is positive for upwards */
- /* Y coordinates. */
- /* */
- /* format :: The format of the glyph bitmap (monochrome or gray). */
- /* */
- /* pitch :: The number of bytes per bitmap line. May be positive */
- /* or negative. */
- /* */
- /* xadvance :: The horizontal advance width in pixels. */
- /* */
- /* yadvance :: The vertical advance height in pixels. */
- /* */
- /* buffer :: A pointer to the bitmap pixels. */
- /* */
- typedef struct FTC_SBitRec_
- {
- FT_Byte width;
- FT_Byte height;
- FT_Char left;
- FT_Char top;
-
- FT_Byte format;
- FT_Char pitch;
- FT_Char xadvance;
- FT_Char yadvance;
-
- FT_Byte* buffer;
-
- } FTC_SBitRec;
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FTC_SBit_Cache_New */
- /* */
- /* <Description> */
- /* Creates a new cache to store small glyph bitmaps. */
- /* */
- /* <Input> */
- /* manager :: A handle to the source cache manager. */
- /* */
- /* <Output> */
- /* acache :: A handle to the new sbit cache. NULL in case of error. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_EXPORT( FT_Error )
- FTC_SBit_Cache_New( FTC_Manager manager,
- FTC_SBit_Cache *acache );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FTC_SBit_Cache_Lookup */
- /* */
- /* <Description> */
- /* Looks up a given small glyph bitmap in a given sbit cache. */
- /* */
- /* <Input> */
- /* cache :: A handle to the source sbit cache. */
- /* desc :: A pointer to the glyph image descriptor. */
- /* gindex :: The glyph index. */
- /* */
- /* <Output> */
- /* sbit :: A handle to a small bitmap descriptor. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- /* <Note> */
- /* The small bitmap descriptor and its bit buffer are owned by the */
- /* cache and should never be freed by the application. They might */
- /* as well disappear from memory on the next cache lookup, so don't */
- /* treat them as persistent data. */
- /* */
- /* The descriptor's `buffer' field is set to 0 to indicate a missing */
- /* glyph bitmap. */
- /* */
- FT_EXPORT( FT_Error )
- FTC_SBit_Cache_Lookup( FTC_SBit_Cache cache,
- FTC_Image_Desc* desc,
- FT_UInt gindex,
- FTC_SBit *sbit );
-
-
- /* */
-
-
-FT_END_HEADER
-
-#endif /* __FTCSBITS_H__ */
-
-
-/* END */
projects / rrdtool.git / blobdiff