1 /**************************************************************************** 2 * 3 * ftgasp.c 4 * 5 * Access of TrueType's `gasp' table (body). 6 * 7 * Copyright (C) 2007-2020 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/ftgasp.h> 20 #include <freetype/internal/tttypes.h> 21 22 23 FT_EXPORT_DEF( FT_Int ) FT_Get_Gasp(FT_Face face,FT_UInt ppem)24 FT_Get_Gasp( FT_Face face, 25 FT_UInt ppem ) 26 { 27 FT_Int result = FT_GASP_NO_TABLE; 28 29 30 if ( face && FT_IS_SFNT( face ) ) 31 { 32 TT_Face ttface = (TT_Face)face; 33 34 35 if ( ttface->gasp.numRanges > 0 ) 36 { 37 TT_GaspRange range = ttface->gasp.gaspRanges; 38 TT_GaspRange range_end = range + ttface->gasp.numRanges; 39 40 41 while ( ppem > range->maxPPEM ) 42 { 43 range++; 44 if ( range >= range_end ) 45 goto Exit; 46 } 47 48 result = range->gaspFlag; 49 50 /* ensure that we don't have spurious bits */ 51 if ( ttface->gasp.version == 0 ) 52 result &= 3; 53 } 54 } 55 Exit: 56 return result; 57 } 58 59 60 /* END */ 61