Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* ftcimage.c */ |
| 4 | /* */ |
| 5 | /* FreeType Image cache (body). */ |
| 6 | /* */ |
| 7 | /* Copyright 2000 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 | |
David Turner | ece6379 | 2000-10-28 23:34:45 +0000 | [diff] [blame] | 19 | #include <freetype/cache/ftcimage.h> |
| 20 | #include <freetype/internal/ftmemory.h> |
Werner Lemberg | 8728f29 | 2000-08-23 17:32:42 +0000 | [diff] [blame] | 21 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 22 | #include <string.h> |
| 23 | |
David Turner | ece6379 | 2000-10-28 23:34:45 +0000 | [diff] [blame] | 24 | |
| 25 | /* the FT_Glyph image "glyph node" type */ |
| 26 | typedef struct FTC_GlyphImageRec_ |
| 27 | { |
| 28 | FTC_GlyphNodeRec root; |
| 29 | FT_Glyph ft_glyph; |
| 30 | |
| 31 | } FTC_GlyphImageRec, *FTC_GlyphImage; |
| 32 | |
| 33 | |
| 34 | /* the glyph image queue type */ |
| 35 | typedef struct FTC_ImageSetRec_ |
| 36 | { |
| 37 | FTC_GlyphSetRec root; |
| 38 | FTC_Image_Desc description; |
| 39 | |
| 40 | } FTC_ImageSetRec, *FTC_ImageSet; |
| 41 | |
| 42 | |
| 43 | typedef struct FTC_Image_CacheRec_ |
| 44 | { |
| 45 | FTC_Glyph_CacheRec root; |
| 46 | |
| 47 | } FTC_Image_CacheRec; |
| 48 | |
Werner Lemberg | ddbb8e7 | 2000-10-26 10:04:16 +0000 | [diff] [blame] | 49 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 50 | |
| 51 | /*************************************************************************/ |
| 52 | /*************************************************************************/ |
| 53 | /***** *****/ |
| 54 | /***** GLYPH IMAGE NODES *****/ |
| 55 | /***** *****/ |
| 56 | /*************************************************************************/ |
| 57 | /*************************************************************************/ |
| 58 | |
| 59 | |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 60 | LOCAL_FUNC_X |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 61 | void ftc_glyph_image_node_destroy( FTC_GlyphImage node, |
| 62 | FTC_GlyphSet gset ) |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 63 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 64 | FT_Memory memory = gset->memory; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 65 | |
| 66 | |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 67 | FT_Done_Glyph( node->ft_glyph ); |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 68 | FREE( node ); |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 69 | } |
| 70 | |
Werner Lemberg | 8728f29 | 2000-08-23 17:32:42 +0000 | [diff] [blame] | 71 | |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 72 | LOCAL_FUNC_X |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 73 | FT_Error ftc_glyph_image_node_new( FTC_GlyphSet gset, |
| 74 | FT_UInt glyph_index, |
| 75 | FTC_GlyphImage *anode ) |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 76 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 77 | FT_Memory memory = gset->memory; |
| 78 | FTC_ImageSet imageset = (FTC_ImageSet)gset; |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 79 | FT_Error error; |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 80 | FTC_GlyphImage node = 0; |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 81 | FT_Face face; |
| 82 | FT_Size size; |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 83 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 84 | |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 85 | /* allocate node */ |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 86 | if ( ALLOC( node, sizeof ( *node ) ) ) |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 87 | goto Exit; |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 88 | |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 89 | /* init its inner fields */ |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 90 | FTC_GlyphNode_Init( FTC_GLYPHNODE(node), gset, glyph_index ); |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 91 | |
| 92 | /* we will now load the glyph image */ |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 93 | error = FTC_Manager_Lookup_Size( gset->manager, |
| 94 | &imageset->description.font, |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 95 | &face, &size ); |
Werner Lemberg | 8728f29 | 2000-08-23 17:32:42 +0000 | [diff] [blame] | 96 | if ( !error ) |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 97 | { |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 98 | FT_UInt glyph_index = node->root.glyph_index; |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 99 | FT_UInt load_flags = FT_LOAD_DEFAULT; |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 100 | FT_UInt image_type = imageset->description.image_type; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 101 | |
| 102 | |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 103 | if ( FTC_IMAGE_FORMAT( image_type ) == ftc_image_format_bitmap ) |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 104 | { |
| 105 | load_flags |= FT_LOAD_RENDER; |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 106 | if ( image_type & ftc_image_flag_monochrome ) |
| 107 | load_flags |= FT_LOAD_MONOCHROME; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 108 | |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 109 | /* disable embedded bitmaps loading if necessary */ |
Werner Lemberg | f50c295 | 2000-09-22 06:52:20 +0000 | [diff] [blame] | 110 | if ( image_type & ftc_image_flag_no_sbits ) |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 111 | load_flags |= FT_LOAD_NO_BITMAP; |
| 112 | } |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 113 | else if ( FTC_IMAGE_FORMAT( image_type ) == ftc_image_format_outline ) |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 114 | { |
| 115 | /* disable embedded bitmaps loading */ |
| 116 | load_flags |= FT_LOAD_NO_BITMAP; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 117 | |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 118 | if ( image_type & ftc_image_flag_unscaled ) |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 119 | load_flags |= FT_LOAD_NO_SCALE; |
| 120 | } |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 121 | |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 122 | if ( image_type & ftc_image_flag_unhinted ) |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 123 | load_flags |= FT_LOAD_NO_HINTING; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 124 | |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 125 | if ( image_type & ftc_image_flag_autohinted ) |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 126 | load_flags |= FT_LOAD_FORCE_AUTOHINT; |
| 127 | |
| 128 | error = FT_Load_Glyph( face, glyph_index, load_flags ); |
Werner Lemberg | 8728f29 | 2000-08-23 17:32:42 +0000 | [diff] [blame] | 129 | if ( !error ) |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 130 | { |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 131 | if ( face->glyph->format == ft_glyph_format_bitmap || |
| 132 | face->glyph->format == ft_glyph_format_outline ) |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 133 | { |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 134 | /* ok, copy it */ |
| 135 | FT_Glyph glyph; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 136 | |
| 137 | |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 138 | error = FT_Get_Glyph( face->glyph, &glyph ); |
Werner Lemberg | 8728f29 | 2000-08-23 17:32:42 +0000 | [diff] [blame] | 139 | if ( !error ) |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 140 | node->ft_glyph = glyph; |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 141 | } |
David Turner | b466a76 | 2000-08-23 11:22:30 +0000 | [diff] [blame] | 142 | else |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 143 | error = FT_Err_Invalid_Argument; |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 144 | } |
| 145 | } |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 146 | |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 147 | Exit: |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 148 | if ( error && node ) |
| 149 | FREE( node ); |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 150 | |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 151 | *anode = node; |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 152 | return error; |
| 153 | } |
| 154 | |
| 155 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 156 | /* this function is important because it is both part of */ |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 157 | /* a FTC_GlyphSet_Class and a FTC_CacheNode_Class */ |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 158 | /* */ |
Werner Lemberg | 4e9dae6 | 2000-08-29 16:50:01 +0000 | [diff] [blame] | 159 | LOCAL_FUNC_X |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 160 | FT_ULong ftc_glyph_image_node_size( FTC_GlyphImage node ) |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 161 | { |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 162 | FT_ULong size = 0; |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 163 | FT_Glyph glyph = node->ft_glyph; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 164 | |
| 165 | |
| 166 | switch ( glyph->format ) |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 167 | { |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 168 | case ft_glyph_format_bitmap: |
| 169 | { |
| 170 | FT_BitmapGlyph bitg; |
| 171 | |
| 172 | |
| 173 | bitg = (FT_BitmapGlyph)glyph; |
| 174 | size = bitg->bitmap.rows * labs( bitg->bitmap.pitch ) + |
| 175 | sizeof ( *bitg ); |
| 176 | } |
| 177 | break; |
| 178 | |
| 179 | case ft_glyph_format_outline: |
| 180 | { |
| 181 | FT_OutlineGlyph outg; |
| 182 | |
| 183 | |
| 184 | outg = (FT_OutlineGlyph)glyph; |
| 185 | size = outg->outline.n_points * |
| 186 | ( sizeof( FT_Vector ) + sizeof ( FT_Byte ) ) + |
| 187 | outg->outline.n_contours * sizeof ( FT_Short ) + |
| 188 | sizeof ( *outg ); |
| 189 | } |
| 190 | break; |
| 191 | |
| 192 | default: |
| 193 | ; |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 194 | } |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 195 | |
| 196 | size += sizeof ( *node ); |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 197 | return size; |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 198 | } |
| 199 | |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 200 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 201 | /*************************************************************************/ |
| 202 | /*************************************************************************/ |
| 203 | /***** *****/ |
David Turner | ece6379 | 2000-10-28 23:34:45 +0000 | [diff] [blame] | 204 | /***** GLYPH IMAGE SETS *****/ |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 205 | /***** *****/ |
| 206 | /*************************************************************************/ |
| 207 | /*************************************************************************/ |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 208 | |
| 209 | |
| 210 | LOCAL_FUNC_X |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 211 | FT_Error ftc_image_set_init( FTC_ImageSet iset, |
| 212 | FTC_Image_Desc* type ) |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 213 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 214 | iset->description = *type; |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 215 | return 0; |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 219 | LOCAL_FUNC_X |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 220 | FT_Bool ftc_image_set_compare( FTC_ImageSet iset, |
| 221 | FTC_Image_Desc* type ) |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 222 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 223 | return !memcmp( &iset->description, type, sizeof ( *type ) ); |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 224 | } |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 225 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 226 | |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 227 | FT_CPLUSPLUS( const FTC_GlyphSet_Class ) ftc_glyph_image_set_class = |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 228 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 229 | sizeof( FTC_ImageSetRec ), |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 230 | |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 231 | (FTC_GlyphSet_InitFunc) ftc_image_set_init, |
| 232 | (FTC_GlyphSet_DoneFunc) 0, |
| 233 | (FTC_GlyphSet_CompareFunc) ftc_image_set_compare, |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 234 | |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 235 | (FTC_GlyphSet_NewNodeFunc) ftc_glyph_image_node_new, |
| 236 | (FTC_GlyphSet_SizeNodeFunc) ftc_glyph_image_node_size, |
| 237 | (FTC_GlyphSet_DestroyNodeFunc)ftc_glyph_image_node_destroy |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 238 | }; |
| 239 | |
| 240 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 241 | /*************************************************************************/ |
| 242 | /*************************************************************************/ |
| 243 | /***** *****/ |
| 244 | /***** GLYPH IMAGE CACHE *****/ |
| 245 | /***** *****/ |
| 246 | /*************************************************************************/ |
| 247 | /*************************************************************************/ |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 248 | |
| 249 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 250 | FT_CPLUSPLUS( const FTC_Glyph_Cache_Class ) ftc_glyph_image_cache_class = |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 251 | { |
| 252 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 253 | sizeof( FTC_Image_CacheRec ), |
| 254 | (FTC_Cache_InitFunc) FTC_Glyph_Cache_Init, |
| 255 | (FTC_Cache_DoneFunc) FTC_Glyph_Cache_Done |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 256 | }, |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 257 | (FTC_GlyphSet_Class*) &ftc_glyph_image_set_class |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 258 | }; |
| 259 | |
| 260 | |
| 261 | FT_EXPORT_FUNC( FT_Error ) FTC_Image_Cache_New( FTC_Manager manager, |
| 262 | FTC_Image_Cache* acache ) |
| 263 | { |
| 264 | return FTC_Manager_Register_Cache( |
| 265 | manager, |
| 266 | (FTC_Cache_Class*)&ftc_glyph_image_cache_class, |
| 267 | (FTC_Cache*)acache ); |
| 268 | } |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 269 | |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 270 | |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 271 | FT_EXPORT_DEF( FT_Error ) |
| 272 | FTC_Image_Cache_Lookup( FTC_Image_Cache cache, |
| 273 | FTC_Image_Desc* desc, |
| 274 | FT_UInt gindex, |
| 275 | FT_Glyph* aglyph ) |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 276 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 277 | FT_Error error; |
| 278 | FTC_GlyphSet gset; |
| 279 | FTC_GlyphNode node; |
| 280 | FTC_Manager manager; |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 281 | |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 282 | FTC_ImageSet img_set; |
Werner Lemberg | d1b7475 | 2000-08-24 16:29:15 +0000 | [diff] [blame] | 283 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 284 | |
Werner Lemberg | d1b7475 | 2000-08-24 16:29:15 +0000 | [diff] [blame] | 285 | /* check for valid `desc' delayed to FT_Lru_Lookup() */ |
| 286 | |
| 287 | if ( !cache || !aglyph ) |
| 288 | return FT_Err_Invalid_Argument; |
| 289 | |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 290 | *aglyph = 0; |
| 291 | gset = cache->root.last_gset; |
| 292 | img_set = (FTC_ImageSet)gset; |
| 293 | if ( !gset || memcmp( &img_set->description, desc, sizeof ( *desc ) ) ) |
David Turner | 35db732 | 2000-08-24 12:39:40 +0000 | [diff] [blame] | 294 | { |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 295 | error = FT_Lru_Lookup( cache->root.gsets_lru, |
Werner Lemberg | d1b7475 | 2000-08-24 16:29:15 +0000 | [diff] [blame] | 296 | (FT_LruKey)desc, |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 297 | (FT_Pointer*)&gset ); |
| 298 | cache->root.last_gset = gset; |
Werner Lemberg | d1b7475 | 2000-08-24 16:29:15 +0000 | [diff] [blame] | 299 | if ( error ) |
David Turner | 35db732 | 2000-08-24 12:39:40 +0000 | [diff] [blame] | 300 | goto Exit; |
| 301 | } |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 302 | |
David Turner | 4e4a436 | 2000-10-28 13:17:11 +0000 | [diff] [blame] | 303 | error = FTC_GlyphSet_Lookup_Node( gset, gindex, &node ); |
Werner Lemberg | d1b7475 | 2000-08-24 16:29:15 +0000 | [diff] [blame] | 304 | if ( error ) |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 305 | goto Exit; |
| 306 | |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 307 | /* now compress the manager's cache pool if needed */ |
| 308 | manager = cache->root.root.manager; |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 309 | if ( manager->num_bytes > manager->max_bytes ) |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 310 | { |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 311 | FTC_GlyphNode_Ref ( node ); |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 312 | FTC_Manager_Compress( manager ); |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 313 | FTC_GlyphNode_Unref ( node ); |
David Turner | ebdce83 | 2000-09-19 01:11:11 +0000 | [diff] [blame] | 314 | } |
David Turner | 80b96f3 | 2000-08-29 16:04:28 +0000 | [diff] [blame] | 315 | |
David Turner | 9b8f5c4 | 2000-10-28 07:26:59 +0000 | [diff] [blame] | 316 | *aglyph = ((FTC_GlyphImage)node)->ft_glyph; |
David Turner | 3b2c50e | 2000-08-23 21:11:13 +0000 | [diff] [blame] | 317 | |
| 318 | Exit: |
| 319 | return error; |
| 320 | } |
| 321 | |
| 322 | |
Werner Lemberg | eddd990 | 2000-10-12 05:05:40 +0000 | [diff] [blame] | 323 | /* END */ |