ftcglyph.c (4979B)
1 /**************************************************************************** 2 * 3 * ftcglyph.c 4 * 5 * FreeType Glyph Image (FT_Glyph) cache (body). 6 * 7 * Copyright (C) 2000-2025 by 8 * David Turner, Robert Wilhelm, and Werner Lemberg. 9 * 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. 15 * 16 */ 17 18 19 #include <freetype/internal/ftobjs.h> 20 #include <freetype/ftcache.h> 21 #include "ftcglyph.h" 22 #include <freetype/fterrors.h> 23 24 #include "ftccback.h" 25 #include "ftcerror.h" 26 27 28 /* create a new chunk node, setting its cache index and ref count */ 29 FT_LOCAL_DEF( void ) 30 FTC_GNode_Init( FTC_GNode gnode, 31 FT_UInt gindex, 32 FTC_Family family ) 33 { 34 gnode->family = family; 35 gnode->gindex = gindex; 36 family->num_nodes++; 37 } 38 39 40 FT_LOCAL_DEF( void ) 41 FTC_GNode_UnselectFamily( FTC_GNode gnode, 42 FTC_Cache cache ) 43 { 44 FTC_Family family = gnode->family; 45 46 47 gnode->family = NULL; 48 if ( family && --family->num_nodes == 0 ) 49 FTC_FAMILY_FREE( family, cache ); 50 } 51 52 53 FT_LOCAL_DEF( void ) 54 FTC_GNode_Done( FTC_GNode gnode, 55 FTC_Cache cache ) 56 { 57 /* finalize the node */ 58 gnode->gindex = 0; 59 60 FTC_GNode_UnselectFamily( gnode, cache ); 61 } 62 63 64 FT_LOCAL_DEF( FT_Bool ) 65 ftc_gnode_compare( FTC_Node ftcgnode, 66 FT_Pointer ftcgquery, 67 FTC_Cache cache, 68 FT_Bool* list_changed ) 69 { 70 FTC_GNode gnode = (FTC_GNode)ftcgnode; 71 FTC_GQuery gquery = (FTC_GQuery)ftcgquery; 72 FT_UNUSED( cache ); 73 74 75 if ( list_changed ) 76 *list_changed = FALSE; 77 return FT_BOOL( gnode->family == gquery->family && 78 gnode->gindex == gquery->gindex ); 79 } 80 81 82 /*************************************************************************/ 83 /*************************************************************************/ 84 /***** *****/ 85 /***** CHUNK SETS *****/ 86 /***** *****/ 87 /*************************************************************************/ 88 /*************************************************************************/ 89 90 FT_LOCAL_DEF( void ) 91 FTC_Family_Init( FTC_Family family, 92 FTC_Cache cache ) 93 { 94 FTC_GCacheClass clazz = FTC_CACHE_GCACHE_CLASS( cache ); 95 96 97 family->clazz = clazz->family_class; 98 family->num_nodes = 0; 99 family->cache = cache; 100 } 101 102 103 FT_LOCAL_DEF( FT_Error ) 104 ftc_gcache_init( FTC_Cache cache ) 105 { 106 FTC_GCache gcache = (FTC_GCache)cache; 107 FT_Error error; 108 109 110 error = FTC_Cache_Init( cache ); 111 if ( !error ) 112 { 113 FTC_GCacheClass clazz = (FTC_GCacheClass)cache->org_class; 114 115 FTC_MruList_Init( &gcache->families, 116 clazz->family_class, 117 0, /* no maximum here! */ 118 cache, 119 cache->memory ); 120 } 121 122 return error; 123 } 124 125 126 #if 0 127 128 FT_LOCAL_DEF( FT_Error ) 129 FTC_GCache_Init( FTC_GCache gcache ) 130 { 131 return ftc_gcache_init( FTC_CACHE( gcache ) ); 132 } 133 134 #endif /* 0 */ 135 136 137 FT_LOCAL_DEF( void ) 138 ftc_gcache_done( FTC_Cache cache ) 139 { 140 FTC_GCache gcache = (FTC_GCache)cache; 141 142 143 FTC_Cache_Done( cache ); 144 FTC_MruList_Done( &gcache->families ); 145 } 146 147 148 #if 0 149 150 FT_LOCAL_DEF( void ) 151 FTC_GCache_Done( FTC_GCache gcache ) 152 { 153 ftc_gcache_done( FTC_CACHE( gcache ) ); 154 } 155 156 #endif /* 0 */ 157 158 159 FT_LOCAL_DEF( FT_Error ) 160 FTC_GCache_New( FTC_Manager manager, 161 FTC_GCacheClass clazz, 162 FTC_GCache *acache ) 163 { 164 return FTC_Manager_RegisterCache( manager, (FTC_CacheClass)clazz, 165 (FTC_Cache*)acache ); 166 } 167 168 169 #ifndef FTC_INLINE 170 171 FT_LOCAL_DEF( FT_Error ) 172 FTC_GCache_Lookup( FTC_GCache gcache, 173 FT_Offset hash, 174 FT_UInt gindex, 175 FTC_GQuery query, 176 FTC_Node *anode ) 177 { 178 FT_Error error; 179 180 181 query->gindex = gindex; 182 183 FTC_MRULIST_LOOKUP( &gcache->families, query, query->family, error ); 184 if ( !error ) 185 { 186 FTC_Family family = query->family; 187 188 189 /* prevent the family from being destroyed too early when an */ 190 /* out-of-memory condition occurs during glyph node initialization. */ 191 family->num_nodes++; 192 193 error = FTC_Cache_Lookup( FTC_CACHE( gcache ), hash, query, anode ); 194 195 if ( --family->num_nodes == 0 ) 196 FTC_FAMILY_FREE( family, FTC_CACHE( gcache ) ); 197 } 198 return error; 199 } 200 201 #endif /* !FTC_INLINE */ 202 203 204 /* END */