/****************************************************************************
*
* ftcglyph.c
*
* FreeType Glyph Image (FT_Glyph) cache (body).
*
* Copyright (C) 2000-2022 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 <freetype/internal/ftobjs.h>
#include <freetype/ftcache.h>
#include "ftcglyph.h"
#include <freetype/fterrors.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 */
