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import r from 'restructure';
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var OS2 = new r.VersionedStruct(r.uint16, {
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header: {
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xAvgCharWidth: r.int16, // average weighted advance width of lower case letters and space
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usWeightClass: r.uint16, // visual weight of stroke in glyphs
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usWidthClass: r.uint16, // relative change from the normal aspect ratio (width to height ratio)
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fsType: new r.Bitfield(r.uint16, [ // Indicates font embedding licensing rights
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null, 'noEmbedding', 'viewOnly', 'editable', null,
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null, null, null, 'noSubsetting', 'bitmapOnly'
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]),
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ySubscriptXSize: r.int16, // recommended horizontal size in pixels for subscripts
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ySubscriptYSize: r.int16, // recommended vertical size in pixels for subscripts
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ySubscriptXOffset: r.int16, // recommended horizontal offset for subscripts
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ySubscriptYOffset: r.int16, // recommended vertical offset form the baseline for subscripts
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ySuperscriptXSize: r.int16, // recommended horizontal size in pixels for superscripts
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ySuperscriptYSize: r.int16, // recommended vertical size in pixels for superscripts
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ySuperscriptXOffset: r.int16, // recommended horizontal offset for superscripts
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ySuperscriptYOffset: r.int16, // recommended vertical offset from the baseline for superscripts
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yStrikeoutSize: r.int16, // width of the strikeout stroke
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yStrikeoutPosition: r.int16, // position of the strikeout stroke relative to the baseline
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sFamilyClass: r.int16, // classification of font-family design
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panose: new r.Array(r.uint8, 10), // describe the visual characteristics of a given typeface
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ulCharRange: new r.Array(r.uint32, 4),
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vendorID: new r.String(4), // four character identifier for the font vendor
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fsSelection: new r.Bitfield(r.uint16, [ // bit field containing information about the font
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'italic', 'underscore', 'negative', 'outlined', 'strikeout',
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'bold', 'regular', 'useTypoMetrics', 'wws', 'oblique'
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]),
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usFirstCharIndex: r.uint16, // The minimum Unicode index in this font
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usLastCharIndex: r.uint16 // The maximum Unicode index in this font
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},
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// The Apple version of this table ends here, but the Microsoft one continues on...
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0: {},
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1: {
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typoAscender: r.int16,
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typoDescender: r.int16,
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typoLineGap: r.int16,
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winAscent: r.uint16,
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winDescent: r.uint16,
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codePageRange: new r.Array(r.uint32, 2)
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},
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2: {
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// these should be common with version 1 somehow
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typoAscender: r.int16,
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typoDescender: r.int16,
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typoLineGap: r.int16,
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winAscent: r.uint16,
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winDescent: r.uint16,
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codePageRange: new r.Array(r.uint32, 2),
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xHeight: r.int16,
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capHeight: r.int16,
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defaultChar: r.uint16,
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breakChar: r.uint16,
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maxContent: r.uint16
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},
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5: {
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typoAscender: r.int16,
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typoDescender: r.int16,
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typoLineGap: r.int16,
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winAscent: r.uint16,
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winDescent: r.uint16,
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codePageRange: new r.Array(r.uint32, 2),
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xHeight: r.int16,
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capHeight: r.int16,
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defaultChar: r.uint16,
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breakChar: r.uint16,
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maxContent: r.uint16,
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usLowerOpticalPointSize: r.uint16,
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usUpperOpticalPointSize: r.uint16
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}
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});
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let versions = OS2.versions;
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versions[3] = versions[4] = versions[2];
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export default OS2;
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