1 /***************************************************************************/ |
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2 /* */ |
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3 /* ftcglyph.c */ |
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4 /* */ |
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5 /* FreeType Glyph Image (FT_Glyph) cache (body). */ |
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6 /* */ |
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7 /* Copyright 2000-2001, 2003, 2004, 2006, 2009, 2011 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 #include <ft2build.h> |
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20 #include FT_INTERNAL_OBJECTS_H |
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21 #include FT_CACHE_H |
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22 #include "ftcglyph.h" |
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23 #include FT_ERRORS_H |
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24 |
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25 #include "ftccback.h" |
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26 #include "ftcerror.h" |
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27 |
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28 |
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29 /* create a new chunk node, setting its cache index and ref count */ |
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30 FT_LOCAL_DEF( void ) |
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31 FTC_GNode_Init( FTC_GNode gnode, |
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32 FT_UInt gindex, |
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33 FTC_Family family ) |
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34 { |
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35 gnode->family = family; |
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36 gnode->gindex = gindex; |
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37 family->num_nodes++; |
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38 } |
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39 |
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40 |
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41 FT_LOCAL_DEF( void ) |
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42 FTC_GNode_UnselectFamily( FTC_GNode gnode, |
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43 FTC_Cache cache ) |
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44 { |
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45 FTC_Family family = gnode->family; |
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46 |
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47 |
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48 gnode->family = NULL; |
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49 if ( family && --family->num_nodes == 0 ) |
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50 FTC_FAMILY_FREE( family, cache ); |
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51 } |
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52 |
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53 |
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54 FT_LOCAL_DEF( void ) |
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55 FTC_GNode_Done( FTC_GNode gnode, |
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56 FTC_Cache cache ) |
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57 { |
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58 /* finalize the node */ |
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59 gnode->gindex = 0; |
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60 |
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61 FTC_GNode_UnselectFamily( gnode, cache ); |
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62 } |
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63 |
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64 |
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65 FT_LOCAL_DEF( FT_Bool ) |
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66 ftc_gnode_compare( FTC_Node ftcgnode, |
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67 FT_Pointer ftcgquery, |
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68 FTC_Cache cache, |
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69 FT_Bool* list_changed ) |
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70 { |
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71 FTC_GNode gnode = (FTC_GNode)ftcgnode; |
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72 FTC_GQuery gquery = (FTC_GQuery)ftcgquery; |
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73 FT_UNUSED( cache ); |
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74 |
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75 |
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76 if ( list_changed ) |
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77 *list_changed = FALSE; |
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78 return FT_BOOL( gnode->family == gquery->family && |
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79 gnode->gindex == gquery->gindex ); |
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80 } |
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81 |
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82 |
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83 #ifdef FTC_INLINE |
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84 |
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85 FT_LOCAL_DEF( FT_Bool ) |
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86 FTC_GNode_Compare( FTC_GNode gnode, |
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87 FTC_GQuery gquery, |
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88 FTC_Cache cache, |
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89 FT_Bool* list_changed ) |
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90 { |
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91 return ftc_gnode_compare( FTC_NODE( gnode ), gquery, |
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92 cache, list_changed ); |
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93 } |
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94 |
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95 #endif |
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96 |
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97 /*************************************************************************/ |
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98 /*************************************************************************/ |
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99 /***** *****/ |
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100 /***** CHUNK SETS *****/ |
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101 /***** *****/ |
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102 /*************************************************************************/ |
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103 /*************************************************************************/ |
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104 |
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105 FT_LOCAL_DEF( void ) |
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106 FTC_Family_Init( FTC_Family family, |
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107 FTC_Cache cache ) |
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108 { |
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109 FTC_GCacheClass clazz = FTC_CACHE__GCACHE_CLASS( cache ); |
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110 |
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111 |
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112 family->clazz = clazz->family_class; |
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113 family->num_nodes = 0; |
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114 family->cache = cache; |
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115 } |
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116 |
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117 |
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118 FT_LOCAL_DEF( FT_Error ) |
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119 ftc_gcache_init( FTC_Cache ftccache ) |
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120 { |
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121 FTC_GCache cache = (FTC_GCache)ftccache; |
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122 FT_Error error; |
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123 |
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124 |
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125 error = FTC_Cache_Init( FTC_CACHE( cache ) ); |
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126 if ( !error ) |
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127 { |
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128 FTC_GCacheClass clazz = (FTC_GCacheClass)FTC_CACHE( cache )->org_class; |
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129 |
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130 FTC_MruList_Init( &cache->families, |
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131 clazz->family_class, |
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132 0, /* no maximum here! */ |
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133 cache, |
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134 FTC_CACHE( cache )->memory ); |
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135 } |
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136 |
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137 return error; |
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138 } |
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139 |
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140 |
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141 #if 0 |
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142 |
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143 FT_LOCAL_DEF( FT_Error ) |
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144 FTC_GCache_Init( FTC_GCache cache ) |
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145 { |
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146 return ftc_gcache_init( FTC_CACHE( cache ) ); |
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147 } |
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148 |
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149 #endif /* 0 */ |
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150 |
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151 |
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152 FT_LOCAL_DEF( void ) |
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153 ftc_gcache_done( FTC_Cache ftccache ) |
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154 { |
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155 FTC_GCache cache = (FTC_GCache)ftccache; |
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156 |
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157 |
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158 FTC_Cache_Done( (FTC_Cache)cache ); |
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159 FTC_MruList_Done( &cache->families ); |
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160 } |
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161 |
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162 |
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163 #if 0 |
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164 |
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165 FT_LOCAL_DEF( void ) |
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166 FTC_GCache_Done( FTC_GCache cache ) |
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167 { |
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168 ftc_gcache_done( FTC_CACHE( cache ) ); |
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169 } |
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170 |
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171 #endif /* 0 */ |
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172 |
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173 |
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174 FT_LOCAL_DEF( FT_Error ) |
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175 FTC_GCache_New( FTC_Manager manager, |
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176 FTC_GCacheClass clazz, |
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177 FTC_GCache *acache ) |
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178 { |
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179 return FTC_Manager_RegisterCache( manager, (FTC_CacheClass)clazz, |
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180 (FTC_Cache*)acache ); |
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181 } |
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182 |
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183 |
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184 #ifndef FTC_INLINE |
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185 |
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186 FT_LOCAL_DEF( FT_Error ) |
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187 FTC_GCache_Lookup( FTC_GCache cache, |
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188 FT_PtrDist hash, |
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189 FT_UInt gindex, |
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190 FTC_GQuery query, |
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191 FTC_Node *anode ) |
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192 { |
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193 FT_Error error; |
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194 |
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195 |
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196 query->gindex = gindex; |
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197 |
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198 FTC_MRULIST_LOOKUP( &cache->families, query, query->family, error ); |
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199 if ( !error ) |
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200 { |
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201 FTC_Family family = query->family; |
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202 |
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203 |
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204 /* prevent the family from being destroyed too early when an */ |
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205 /* out-of-memory condition occurs during glyph node initialization. */ |
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206 family->num_nodes++; |
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207 |
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208 error = FTC_Cache_Lookup( FTC_CACHE( cache ), hash, query, anode ); |
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209 |
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210 if ( --family->num_nodes == 0 ) |
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211 FTC_FAMILY_FREE( family, cache ); |
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212 } |
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213 return error; |
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214 } |
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215 |
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216 #endif /* !FTC_INLINE */ |
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217 |
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218 |
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219 /* END */ |
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