Function makeCmapTable

libraries/p5.js:4118–4190

(glyphs)

}

function makeCmapTable(glyphs) {
    var i;
    var t = new table.Table('cmap', [
        {name: 'version', type: 'USHORT', value: 0},
        {name: 'numTables', type: 'USHORT', value: 1},
        {name: 'platformID', type: 'USHORT', value: 3},
        {name: 'encodingID', type: 'USHORT', value: 1},
        {name: 'offset', type: 'ULONG', value: 12},
        {name: 'format', type: 'USHORT', value: 4},
        {name: 'length', type: 'USHORT', value: 0},
        {name: 'language', type: 'USHORT', value: 0},
        {name: 'segCountX2', type: 'USHORT', value: 0},
        {name: 'searchRange', type: 'USHORT', value: 0},
        {name: 'entrySelector', type: 'USHORT', value: 0},
        {name: 'rangeShift', type: 'USHORT', value: 0}
    ]);

    t.segments = [];
    for (i = 0; i < glyphs.length; i += 1) {
        var glyph = glyphs.get(i);
        for (var j = 0; j < glyph.unicodes.length; j += 1) {
            addSegment(t, glyph.unicodes[j], i);
        }

        t.segments = t.segments.sort(function(a, b) {
            return a.start - b.start;
        });
    }

    addTerminatorSegment(t);

    var segCount;
    segCount = t.segments.length;
    t.segCountX2 = segCount * 2;
    t.searchRange = Math.pow(2, Math.floor(Math.log(segCount) / Math.log(2))) * 2;
    t.entrySelector = Math.log(t.searchRange / 2) / Math.log(2);
    t.rangeShift = t.segCountX2 - t.searchRange;

    // Set up parallel segment arrays.
    var endCounts = [];
    var startCounts = [];
    var idDeltas = [];
    var idRangeOffsets = [];
    var glyphIds = [];

    for (i = 0; i < segCount; i += 1) {
        var segment = t.segments[i];
        endCounts = endCounts.concat({name: 'end_' + i, type: 'USHORT', value: segment.end});
        startCounts = startCounts.concat({name: 'start_' + i, type: 'USHORT', value: segment.start});
        idDeltas = idDeltas.concat({name: 'idDelta_' + i, type: 'SHORT', value: segment.delta});
        idRangeOffsets = idRangeOffsets.concat({name: 'idRangeOffset_' + i, type: 'USHORT', value: segment.offset});
        if (segment.glyphId !== undefined) {
            glyphIds = glyphIds.concat({name: 'glyph_' + i, type: 'USHORT', value: segment.glyphId});
        }
    }

    t.fields = t.fields.concat(endCounts);
    t.fields.push({name: 'reservedPad', type: 'USHORT', value: 0});