Show More
Commit Description:
add model solution
Commit Description:
add model solution
References:
File last commit:
Show/Diff file:
Action:
node_modules/fontkit/src/tables/HVAR.js
| 44 lines
| 1.3 KiB
| application/javascript
| JavascriptLexer
|
| r789 | import r from 'restructure'; | |||
| import {resolveLength} from 'restructure/src/utils'; | ||||
| import {ItemVariationStore} from './variations'; | ||||
| // TODO: add this to restructure | ||||
| class VariableSizeNumber { | ||||
| constructor(size) { | ||||
| this._size = size; | ||||
| } | ||||
| decode(stream, parent) { | ||||
| switch (this.size(0, parent)) { | ||||
| case 1: return stream.readUInt8(); | ||||
| case 2: return stream.readUInt16BE(); | ||||
| case 3: return stream.readUInt24BE(); | ||||
| case 4: return stream.readUInt32BE(); | ||||
| } | ||||
| } | ||||
| size(val, parent) { | ||||
| return resolveLength(this._size, null, parent); | ||||
| } | ||||
| } | ||||
| let MapDataEntry = new r.Struct({ | ||||
| entry: new VariableSizeNumber(t => ((t.parent.entryFormat & 0x0030) >> 4) + 1), | ||||
| outerIndex: t => t.entry >> ((t.parent.entryFormat & 0x000F) + 1), | ||||
| innerIndex: t => t.entry & ((1 << ((t.parent.entryFormat & 0x000F) + 1)) - 1) | ||||
| }); | ||||
| let DeltaSetIndexMap = new r.Struct({ | ||||
| entryFormat: r.uint16, | ||||
| mapCount: r.uint16, | ||||
| mapData: new r.Array(MapDataEntry, 'mapCount') | ||||
| }); | ||||
| export default new r.Struct({ | ||||
| majorVersion: r.uint16, | ||||
| minorVersion: r.uint16, | ||||
| itemVariationStore: new r.Pointer(r.uint32, ItemVariationStore), | ||||
| advanceWidthMapping: new r.Pointer(r.uint32, DeltaSetIndexMap), | ||||
| LSBMapping: new r.Pointer(r.uint32, DeltaSetIndexMap), | ||||
| RSBMapping: new r.Pointer(r.uint32, DeltaSetIndexMap) | ||||
| }); | ||||