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