[692] | 1 | /***************************************************************************/
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| 2 | /* */
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| 3 | /* ftcimage.h */
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| 4 | /* */
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| 5 | /* FreeType Generic Image cache (specification) */
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| 6 | /* */
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| 7 | /* Copyright 2000-2001, 2002, 2003 by */
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| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */
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| 9 | /* */
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| 10 | /* This file is part of the FreeType project, and may only be used, */
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| 11 | /* modified, and distributed under the terms of the FreeType project */
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| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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| 13 | /* this file you indicate that you have read the license and */
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| 14 | /* understand and accept it fully. */
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| 15 | /* */
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| 16 | /***************************************************************************/
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| 17 |
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| 18 |
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| 19 | /*
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| 20 | * FTC_ICache is an _abstract_ cache used to store a single FT_Glyph
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| 21 | * image per cache node.
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| 22 | *
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| 23 | * FTC_ICache extends FTC_GCache. For an implementation example,
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| 24 | * see FTC_ImageCache in `src/cache/ftbasic.c'.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*************************************************************************/
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| 29 | /* */
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| 30 | /* Each image cache really manages FT_Glyph objects. */
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| 31 | /* */
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| 32 | /*************************************************************************/
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| 33 |
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| 34 |
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| 35 | #ifndef __FTCIMAGE_H__
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| 36 | #define __FTCIMAGE_H__
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| 37 |
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| 38 |
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| 39 | #include <ft2build.h>
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| 40 | #include FT_CACHE_H
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| 41 | #include FT_CACHE_INTERNAL_GLYPH_H
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| 42 |
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| 43 | FT_BEGIN_HEADER
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| 44 |
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| 45 |
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| 46 | /* the FT_Glyph image node type - we store only 1 glyph per node */
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| 47 | typedef struct FTC_INodeRec_
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| 48 | {
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| 49 | FTC_GNodeRec gnode;
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| 50 | FT_Glyph glyph;
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| 51 |
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| 52 | } FTC_INodeRec, *FTC_INode;
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| 53 |
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| 54 | #define FTC_INODE( x ) ( (FTC_INode)( x ) )
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| 55 | #define FTC_INODE_GINDEX( x ) FTC_GNODE(x)->gindex
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| 56 | #define FTC_INODE_FAMILY( x ) FTC_GNODE(x)->family
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| 57 |
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| 58 | typedef FT_Error
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| 59 | (*FTC_IFamily_LoadGlyphFunc)( FTC_Family family,
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| 60 | FT_UInt gindex,
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| 61 | FTC_Cache cache,
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| 62 | FT_Glyph *aglyph );
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| 63 |
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| 64 | typedef struct FTC_IFamilyClassRec_
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| 65 | {
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| 66 | FTC_MruListClassRec clazz;
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| 67 | FTC_IFamily_LoadGlyphFunc family_load_glyph;
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| 68 |
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| 69 | } FTC_IFamilyClassRec;
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| 70 |
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| 71 | typedef const FTC_IFamilyClassRec* FTC_IFamilyClass;
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| 72 |
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| 73 | #define FTC_IFAMILY_CLASS( x ) ((FTC_IFamilyClass)(x))
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| 74 |
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| 75 | #define FTC_CACHE__IFAMILY_CLASS( x ) \
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| 76 | FTC_IFAMILY_CLASS( FTC_CACHE__GCACHE_CLASS(x)->family_class )
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| 77 |
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| 78 |
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| 79 | /* can be used as a @FTC_Node_FreeFunc */
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| 80 | FT_EXPORT( void )
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| 81 | FTC_INode_Free( FTC_INode inode,
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| 82 | FTC_Cache cache );
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| 83 |
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| 84 | /* Can be used as @FTC_Node_NewFunc. `gquery.index' and `gquery.family'
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| 85 | * must be set correctly. This function will call the `family_load_glyph'
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| 86 | * method to load the FT_Glyph into the cache node.
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| 87 | */
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| 88 | FT_EXPORT( FT_Error )
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| 89 | FTC_INode_New( FTC_INode *pinode,
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| 90 | FTC_GQuery gquery,
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| 91 | FTC_Cache cache );
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| 92 |
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| 93 | /* can be used as @FTC_Node_WeightFunc */
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| 94 | FT_EXPORT( FT_ULong )
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| 95 | FTC_INode_Weight( FTC_INode inode );
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| 96 |
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| 97 | /* */
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| 98 |
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| 99 | FT_END_HEADER
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| 100 |
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| 101 | #endif /* __FTCIMAGE_H__ */
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| 102 |
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| 103 |
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| 104 | /* END */
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