1 /***************************************************************************/ 2 /* */ 3 /* ftcglyph.c */ 4 /* */ 5 /* FreeType Glyph Image (FT_Glyph) cache (body). */ 6 /* */ 7 /* Copyright 2000-2001 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 <ft2build.h> 20 #include FT_CACHE_H 21 #include FT_CACHE_INTERNAL_GLYPH_H 22 #include FT_ERRORS_H 23 #include FT_LIST_H 24 #include FT_INTERNAL_OBJECTS_H 25 #include FT_INTERNAL_DEBUG_H 26 27 #include "ftcerror.h" 28 29 30 /* create a new chunk node, setting its cache index and ref count */ 31 FT_EXPORT_DEF( void ) ftc_glyph_node_init(FTC_GlyphNode gnode,FT_UInt gindex,FTC_GlyphFamily gfam)32 ftc_glyph_node_init( FTC_GlyphNode gnode, 33 FT_UInt gindex, 34 FTC_GlyphFamily gfam ) 35 { 36 FT_UInt len; 37 FT_UInt start = FTC_GLYPH_FAMILY_START( gfam, gindex ); 38 39 40 gnode->item_start = (FT_UShort)start; 41 42 len = gfam->item_total - start; 43 if ( len > gfam->item_count ) 44 len = gfam->item_count; 45 46 gnode->item_count = (FT_UShort)len; 47 gfam->family.num_nodes++; 48 } 49 50 51 FT_EXPORT_DEF( void ) ftc_glyph_node_done(FTC_GlyphNode gnode,FTC_Cache cache)52 ftc_glyph_node_done( FTC_GlyphNode gnode, 53 FTC_Cache cache ) 54 { 55 /* finalize the node */ 56 gnode->item_count = 0; 57 gnode->item_start = 0; 58 59 ftc_node_done( FTC_NODE( gnode ), cache ); 60 } 61 62 63 FT_EXPORT_DEF( FT_Bool ) ftc_glyph_node_compare(FTC_GlyphNode gnode,FTC_GlyphQuery gquery)64 ftc_glyph_node_compare( FTC_GlyphNode gnode, 65 FTC_GlyphQuery gquery ) 66 { 67 FT_UInt start = (FT_UInt)gnode->item_start; 68 FT_UInt count = (FT_UInt)gnode->item_count; 69 70 return FT_BOOL( (FT_UInt)( gquery->gindex - start ) < count ); 71 } 72 73 74 /*************************************************************************/ 75 /*************************************************************************/ 76 /***** *****/ 77 /***** CHUNK SETS *****/ 78 /***** *****/ 79 /*************************************************************************/ 80 /*************************************************************************/ 81 82 83 FT_EXPORT_DEF( FT_Error ) ftc_glyph_family_init(FTC_GlyphFamily gfam,FT_UInt32 hash,FT_UInt item_count,FT_UInt item_total,FTC_GlyphQuery gquery,FTC_Cache cache)84 ftc_glyph_family_init( FTC_GlyphFamily gfam, 85 FT_UInt32 hash, 86 FT_UInt item_count, 87 FT_UInt item_total, 88 FTC_GlyphQuery gquery, 89 FTC_Cache cache ) 90 { 91 FT_Error error; 92 93 94 error = ftc_family_init( FTC_FAMILY( gfam ), FTC_QUERY( gquery ), cache ); 95 if ( !error ) 96 { 97 gfam->hash = hash; 98 gfam->item_total = item_total; 99 gfam->item_count = item_count; 100 101 FTC_GLYPH_FAMILY_FOUND( gfam, gquery ); 102 } 103 104 return error; 105 } 106 107 108 FT_EXPORT_DEF( void ) ftc_glyph_family_done(FTC_GlyphFamily gfam)109 ftc_glyph_family_done( FTC_GlyphFamily gfam ) 110 { 111 ftc_family_done( FTC_FAMILY( gfam ) ); 112 } 113 114 115 /* END */ 116