| /***************************************************************************/ |
| /* */ |
| /* ftcglyph.c */ |
| /* */ |
| /* FreeType Glyph Image (FT_Glyph) cache (body). */ |
| /* */ |
| /* Copyright 2000-2015 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. */ |
| /* */ |
| /***************************************************************************/ |
| |
| |
| #include <ft2build.h> |
| #include FT_INTERNAL_OBJECTS_H |
| #include FT_CACHE_H |
| #include "ftcglyph.h" |
| #include FT_ERRORS_H |
| |
| #include "ftccback.h" |
| #include "ftcerror.h" |
| |
| |
| /* create a new chunk node, setting its cache index and ref count */ |
| FT_LOCAL_DEF( void ) |
| FTC_GNode_Init( FTC_GNode gnode, |
| FT_UInt gindex, |
| FTC_Family family ) |
| { |
| gnode->family = family; |
| gnode->gindex = gindex; |
| family->num_nodes++; |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| FTC_GNode_UnselectFamily( FTC_GNode gnode, |
| FTC_Cache cache ) |
| { |
| FTC_Family family = gnode->family; |
| |
| |
| gnode->family = NULL; |
| if ( family && --family->num_nodes == 0 ) |
| FTC_FAMILY_FREE( family, cache ); |
| } |
| |
| |
| FT_LOCAL_DEF( void ) |
| FTC_GNode_Done( FTC_GNode gnode, |
| FTC_Cache cache ) |
| { |
| /* finalize the node */ |
| gnode->gindex = 0; |
| |
| FTC_GNode_UnselectFamily( gnode, cache ); |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Bool ) |
| ftc_gnode_compare( FTC_Node ftcgnode, |
| FT_Pointer ftcgquery, |
| FTC_Cache cache, |
| FT_Bool* list_changed ) |
| { |
| FTC_GNode gnode = (FTC_GNode)ftcgnode; |
| FTC_GQuery gquery = (FTC_GQuery)ftcgquery; |
| FT_UNUSED( cache ); |
| |
| |
| if ( list_changed ) |
| *list_changed = FALSE; |
| return FT_BOOL( gnode->family == gquery->family && |
| gnode->gindex == gquery->gindex ); |
| } |
| |
| |
| #ifdef FTC_INLINE |
| |
| FT_LOCAL_DEF( FT_Bool ) |
| FTC_GNode_Compare( FTC_GNode gnode, |
| FTC_GQuery gquery, |
| FTC_Cache cache, |
| FT_Bool* list_changed ) |
| { |
| return ftc_gnode_compare( FTC_NODE( gnode ), gquery, |
| cache, list_changed ); |
| } |
| |
| #endif |
| |
| /*************************************************************************/ |
| /*************************************************************************/ |
| /***** *****/ |
| /***** CHUNK SETS *****/ |
| /***** *****/ |
| /*************************************************************************/ |
| /*************************************************************************/ |
| |
| FT_LOCAL_DEF( void ) |
| FTC_Family_Init( FTC_Family family, |
| FTC_Cache cache ) |
| { |
| FTC_GCacheClass clazz = FTC_CACHE__GCACHE_CLASS( cache ); |
| |
| |
| family->clazz = clazz->family_class; |
| family->num_nodes = 0; |
| family->cache = cache; |
| } |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| ftc_gcache_init( FTC_Cache ftccache ) |
| { |
| FTC_GCache cache = (FTC_GCache)ftccache; |
| FT_Error error; |
| |
| |
| error = FTC_Cache_Init( FTC_CACHE( cache ) ); |
| if ( !error ) |
| { |
| FTC_GCacheClass clazz = (FTC_GCacheClass)FTC_CACHE( cache )->org_class; |
| |
| FTC_MruList_Init( &cache->families, |
| clazz->family_class, |
| 0, /* no maximum here! */ |
| cache, |
| FTC_CACHE( cache )->memory ); |
| } |
| |
| return error; |
| } |
| |
| |
| #if 0 |
| |
| FT_LOCAL_DEF( FT_Error ) |
| FTC_GCache_Init( FTC_GCache cache ) |
| { |
| return ftc_gcache_init( FTC_CACHE( cache ) ); |
| } |
| |
| #endif /* 0 */ |
| |
| |
| FT_LOCAL_DEF( void ) |
| ftc_gcache_done( FTC_Cache ftccache ) |
| { |
| FTC_GCache cache = (FTC_GCache)ftccache; |
| |
| |
| FTC_Cache_Done( (FTC_Cache)cache ); |
| FTC_MruList_Done( &cache->families ); |
| } |
| |
| |
| #if 0 |
| |
| FT_LOCAL_DEF( void ) |
| FTC_GCache_Done( FTC_GCache cache ) |
| { |
| ftc_gcache_done( FTC_CACHE( cache ) ); |
| } |
| |
| #endif /* 0 */ |
| |
| |
| FT_LOCAL_DEF( FT_Error ) |
| FTC_GCache_New( FTC_Manager manager, |
| FTC_GCacheClass clazz, |
| FTC_GCache *acache ) |
| { |
| return FTC_Manager_RegisterCache( manager, (FTC_CacheClass)clazz, |
| (FTC_Cache*)acache ); |
| } |
| |
| |
| #ifndef FTC_INLINE |
| |
| FT_LOCAL_DEF( FT_Error ) |
| FTC_GCache_Lookup( FTC_GCache cache, |
| FT_Offset hash, |
| FT_UInt gindex, |
| FTC_GQuery query, |
| FTC_Node *anode ) |
| { |
| FT_Error error; |
| |
| |
| query->gindex = gindex; |
| |
| FTC_MRULIST_LOOKUP( &cache->families, query, query->family, error ); |
| if ( !error ) |
| { |
| FTC_Family family = query->family; |
| |
| |
| /* prevent the family from being destroyed too early when an */ |
| /* out-of-memory condition occurs during glyph node initialization. */ |
| family->num_nodes++; |
| |
| error = FTC_Cache_Lookup( FTC_CACHE( cache ), hash, query, anode ); |
| |
| if ( --family->num_nodes == 0 ) |
| FTC_FAMILY_FREE( family, cache ); |
| } |
| return error; |
| } |
| |
| #endif /* !FTC_INLINE */ |
| |
| |
| /* END */ |