1 /****************************************************************************
5 * FreeType Generic Image cache (specification)
7 * Copyright (C) 2000-2020 by
8 * David Turner, Robert Wilhelm, and Werner Lemberg.
10 * This file is part of the FreeType project, and may only be used,
11 * modified, and distributed under the terms of the FreeType project
12 * license, LICENSE.TXT. By continuing to use, modify, or distribute
13 * this file you indicate that you have read the license and
14 * understand and accept it fully.
20 * FTC_ICache is an _abstract_ cache used to store a single FT_Glyph
21 * image per cache node.
23 * FTC_ICache extends FTC_GCache. For an implementation example,
24 * see FTC_ImageCache in `src/cache/ftbasic.c'.
28 /**************************************************************************
30 * Each image cache really manages FT_Glyph objects.
39 #include <freetype/ftcache.h>
45 /* the FT_Glyph image node type - we store only 1 glyph per node */
46 typedef struct FTC_INodeRec_
51 } FTC_INodeRec, *FTC_INode;
53 #define FTC_INODE( x ) ( (FTC_INode)( x ) )
54 #define FTC_INODE_GINDEX( x ) FTC_GNODE(x)->gindex
55 #define FTC_INODE_FAMILY( x ) FTC_GNODE(x)->family
58 (*FTC_IFamily_LoadGlyphFunc)( FTC_Family family,
63 typedef struct FTC_IFamilyClassRec_
65 FTC_MruListClassRec clazz;
66 FTC_IFamily_LoadGlyphFunc family_load_glyph;
68 } FTC_IFamilyClassRec;
70 typedef const FTC_IFamilyClassRec* FTC_IFamilyClass;
72 #define FTC_IFAMILY_CLASS( x ) ((FTC_IFamilyClass)(x))
74 #define FTC_CACHE_IFAMILY_CLASS( x ) \
75 FTC_IFAMILY_CLASS( FTC_CACHE_GCACHE_CLASS(x)->family_class )
78 /* can be used as a @FTC_Node_FreeFunc */
80 FTC_INode_Free( FTC_INode inode,
83 /* Can be used as @FTC_Node_NewFunc. `gquery.index' and `gquery.family'
84 * must be set correctly. This function will call the `family_load_glyph'
85 * method to load the FT_Glyph into the cache node.
88 FTC_INode_New( FTC_INode *pinode,
93 /* can be used as @FTC_Node_WeightFunc */
95 FTC_INode_Weight( FTC_INode inode );
103 #endif /* FTCIMAGE_H_ */