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import r from 'restructure';
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import {BigMetrics} from './EBDT';
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let SBitLineMetrics = new r.Struct({
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ascender: r.int8,
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descender: r.int8,
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widthMax: r.uint8,
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caretSlopeNumerator: r.int8,
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caretSlopeDenominator: r.int8,
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caretOffset: r.int8,
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minOriginSB: r.int8,
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minAdvanceSB: r.int8,
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maxBeforeBL: r.int8,
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minAfterBL: r.int8,
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pad: new r.Reserved(r.int8, 2)
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});
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let CodeOffsetPair = new r.Struct({
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glyphCode: r.uint16,
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offset: r.uint16
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});
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let IndexSubtable = new r.VersionedStruct(r.uint16, {
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header: {
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imageFormat: r.uint16,
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imageDataOffset: r.uint32
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},
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1: {
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offsetArray: new r.Array(r.uint32, t => t.parent.lastGlyphIndex - t.parent.firstGlyphIndex + 1)
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},
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2: {
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imageSize: r.uint32,
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bigMetrics: BigMetrics
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},
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3: {
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offsetArray: new r.Array(r.uint16, t => t.parent.lastGlyphIndex - t.parent.firstGlyphIndex + 1)
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},
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4: {
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numGlyphs: r.uint32,
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glyphArray: new r.Array(CodeOffsetPair, t => t.numGlyphs + 1)
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},
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5: {
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imageSize: r.uint32,
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bigMetrics: BigMetrics,
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numGlyphs: r.uint32,
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glyphCodeArray: new r.Array(r.uint16, 'numGlyphs')
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}
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});
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let IndexSubtableArray = new r.Struct({
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firstGlyphIndex: r.uint16,
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lastGlyphIndex: r.uint16,
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subtable: new r.Pointer(r.uint32, IndexSubtable)
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});
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let BitmapSizeTable = new r.Struct({
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indexSubTableArray: new r.Pointer(r.uint32, new r.Array(IndexSubtableArray, 1), { type: 'parent' }),
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indexTablesSize: r.uint32,
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numberOfIndexSubTables: r.uint32,
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colorRef: r.uint32,
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hori: SBitLineMetrics,
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vert: SBitLineMetrics,
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startGlyphIndex: r.uint16,
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endGlyphIndex: r.uint16,
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ppemX: r.uint8,
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ppemY: r.uint8,
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bitDepth: r.uint8,
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flags: new r.Bitfield(r.uint8, ['horizontal', 'vertical'])
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});
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export default new r.Struct({
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version: r.uint32, // 0x00020000
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numSizes: r.uint32,
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sizes: new r.Array(BitmapSizeTable, 'numSizes')
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});
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