| /**************************************************************************** |
| * |
| * ftcimage.h |
| * |
| * FreeType Generic Image cache (specification) |
| * |
| * Copyright (C) 2000-2021 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. |
| * |
| */ |
| |
| |
| /* |
| * FTC_ICache is an _abstract_ cache used to store a single FT_Glyph |
| * image per cache node. |
| * |
| * FTC_ICache extends FTC_GCache. For an implementation example, |
| * see FTC_ImageCache in `src/cache/ftbasic.c'. |
| */ |
| |
| |
| /************************************************************************** |
| * |
| * Each image cache really manages FT_Glyph objects. |
| * |
| */ |
| |
| |
| #ifndef FTCIMAGE_H_ |
| #define FTCIMAGE_H_ |
| |
| |
| #include <freetype/ftcache.h> |
| #include "ftcglyph.h" |
| |
| FT_BEGIN_HEADER |
| |
| |
| /* the FT_Glyph image node type - we store only 1 glyph per node */ |
| typedef struct FTC_INodeRec_ |
| { |
| FTC_GNodeRec gnode; |
| FT_Glyph glyph; |
| |
| } FTC_INodeRec, *FTC_INode; |
| |
| #define FTC_INODE( x ) ( (FTC_INode)( x ) ) |
| #define FTC_INODE_GINDEX( x ) FTC_GNODE(x)->gindex |
| #define FTC_INODE_FAMILY( x ) FTC_GNODE(x)->family |
| |
| typedef FT_Error |
| (*FTC_IFamily_LoadGlyphFunc)( FTC_Family family, |
| FT_UInt gindex, |
| FTC_Cache cache, |
| FT_Glyph *aglyph ); |
| |
| typedef struct FTC_IFamilyClassRec_ |
| { |
| FTC_MruListClassRec clazz; |
| FTC_IFamily_LoadGlyphFunc family_load_glyph; |
| |
| } FTC_IFamilyClassRec; |
| |
| typedef const FTC_IFamilyClassRec* FTC_IFamilyClass; |
| |
| #define FTC_IFAMILY_CLASS( x ) ((FTC_IFamilyClass)(x)) |
| |
| #define FTC_CACHE_IFAMILY_CLASS( x ) \ |
| FTC_IFAMILY_CLASS( FTC_CACHE_GCACHE_CLASS(x)->family_class ) |
| |
| |
| /* can be used as a @FTC_Node_FreeFunc */ |
| FT_LOCAL( void ) |
| FTC_INode_Free( FTC_INode inode, |
| FTC_Cache cache ); |
| |
| /* Can be used as @FTC_Node_NewFunc. `gquery.index' and `gquery.family' |
| * must be set correctly. This function will call the `family_load_glyph' |
| * method to load the FT_Glyph into the cache node. |
| */ |
| FT_LOCAL( FT_Error ) |
| FTC_INode_New( FTC_INode *pinode, |
| FTC_GQuery gquery, |
| FTC_Cache cache ); |
| |
| #if 0 |
| /* can be used as @FTC_Node_WeightFunc */ |
| FT_LOCAL( FT_ULong ) |
| FTC_INode_Weight( FTC_INode inode ); |
| #endif |
| |
| |
| /* */ |
| |
| FT_END_HEADER |
| |
| #endif /* FTCIMAGE_H_ */ |
| |
| |
| /* END */ |