1 /***************************************************************************/ 2 /* */ 3 /* ftgasp.c */ 4 /* */ 5 /* Access of TrueType's `gasp' table (body). */ 6 /* */ 7 /* Copyright 2007-2018 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_GASP_H 21 #include FT_INTERNAL_TRUETYPE_TYPES_H 22 23 24 FT_EXPORT_DEF( FT_Int ) 25 FT_Get_Gasp( FT_Face face, 26 FT_UInt ppem ) 27 { 28 FT_Int result = FT_GASP_NO_TABLE; 29 30 31 if ( face && FT_IS_SFNT( face ) ) 32 { 33 TT_Face ttface = (TT_Face)face; 34 35 36 if ( ttface->gasp.numRanges > 0 ) 37 { 38 TT_GaspRange range = ttface->gasp.gaspRanges; 39 TT_GaspRange range_end = range + ttface->gasp.numRanges; 40 41 42 while ( ppem > range->maxPPEM ) 43 { 44 range++; 45 if ( range >= range_end ) 46 goto Exit; 47 } 48 49 result = range->gaspFlag; 50 51 /* ensure that we don't have spurious bits */ 52 if ( ttface->gasp.version == 0 ) 53 result &= 3; 54 } 55 } 56 Exit: 57 return result; 58 } 59 60 61 /* END */ 62
