108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/***************************************************************************/
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/* */
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/* ftcimage.h */
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/* */
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/* FreeType Generic Image cache (specification) */
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/* */
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/* Copyright 2000-2016 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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/*
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* FTC_ICache is an _abstract_ cache used to store a single FT_Glyph
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* image per cache node.
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*
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* FTC_ICache extends FTC_GCache. For an implementation example,
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* see FTC_ImageCache in `src/cache/ftbasic.c'.
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*/
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/*************************************************************************/
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/* */
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/* Each image cache really manages FT_Glyph objects. */
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/* */
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/*************************************************************************/
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#ifndef FTCIMAGE_H_
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#define FTCIMAGE_H_
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#include <ft2build.h>
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#include FT_CACHE_H
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#include "ftcglyph.h"
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FT_BEGIN_HEADER
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/* the FT_Glyph image node type - we store only 1 glyph per node */
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typedef struct FTC_INodeRec_
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{
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FTC_GNodeRec gnode;
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FT_Glyph glyph;
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} FTC_INodeRec, *FTC_INode;
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#define FTC_INODE( x ) ( (FTC_INode)( x ) )
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#define FTC_INODE_GINDEX( x ) FTC_GNODE(x)->gindex
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#define FTC_INODE_FAMILY( x ) FTC_GNODE(x)->family
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typedef FT_Error
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(*FTC_IFamily_LoadGlyphFunc)( FTC_Family family,
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FT_UInt gindex,
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FTC_Cache cache,
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FT_Glyph *aglyph );
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typedef struct FTC_IFamilyClassRec_
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{
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FTC_MruListClassRec clazz;
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FTC_IFamily_LoadGlyphFunc family_load_glyph;
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} FTC_IFamilyClassRec;
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typedef const FTC_IFamilyClassRec* FTC_IFamilyClass;
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#define FTC_IFAMILY_CLASS( x ) ((FTC_IFamilyClass)(x))
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#define FTC_CACHE_IFAMILY_CLASS( x ) \
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FTC_IFAMILY_CLASS( FTC_CACHE_GCACHE_CLASS(x)->family_class )
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/* can be used as a @FTC_Node_FreeFunc */
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FT_LOCAL( void )
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FTC_INode_Free( FTC_INode inode,
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FTC_Cache cache );
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/* Can be used as @FTC_Node_NewFunc. `gquery.index' and `gquery.family'
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* must be set correctly. This function will call the `family_load_glyph'
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* method to load the FT_Glyph into the cache node.
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*/
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FT_LOCAL( FT_Error )
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FTC_INode_New( FTC_INode *pinode,
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FTC_GQuery gquery,
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FTC_Cache cache );
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#if 0
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/* can be used as @FTC_Node_WeightFunc */
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FT_LOCAL( FT_ULong )
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FTC_INode_Weight( FTC_INode inode );
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#endif
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/* */
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FT_END_HEADER
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#endif /* FTCIMAGE_H_ */
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/* END */
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