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39 lines
884 B
Plaintext
39 lines
884 B
Plaintext
/**
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* @file ttf基本数据结构
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* @author mengke01(kekee000@gmail.com)
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*
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* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6.html
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*/
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const struct = {
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Int8: 1,
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Uint8: 2,
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Int16: 3,
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Uint16: 4,
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Int32: 5,
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Uint32: 6,
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Fixed: 7, // 32-bit signed fixed-point number (16.16)
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FUnit: 8, // Smallest measurable distance in the em space
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// 16-bit signed fixed number with the low 14 bits of fraction
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F2Dot14: 11,
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// The long internal format of a date in seconds since 12:00 midnight,
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// January 1, 1904. It is represented as a signed 64-bit integer.
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LongDateTime: 12,
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// extend data type
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Char: 13,
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String: 14,
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Bytes: 15,
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Uint24: 20
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};
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// 反转名字查找
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const names = {};
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Object.keys(struct).forEach((key) => {
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names[struct[key]] = key;
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});
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struct.names = names;
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export default struct;
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