red-agate-barcode/modules/barcode/Nw7.js

red-agate barcode tag library.

// Copyright (c) 2017, Shellyl_N and Authors
// license: ISC
// https://github.com/shellyln
import { barcodeBasePropsDefault, BarcodeBase } from './BarcodeBase';
import { charactersMap, reverseMap } from './data/Nw7.data';
export const nw7PropsDefault = Object.assign({}, barcodeBasePropsDefault, {
    useRawDataAsText: true,
    addCheckDigit: true,
    narrowWidth: 0.33,
    wideWidth: 0.66,
    charGapWidth: void 0,
    startChar: "",
    stopChar: ""
});
export class Nw7 extends BarcodeBase {
    constructor(props) {
        super(Object.assign({}, nw7PropsDefault, props), charactersMap);
    }
    calcSymbolSize(data, startChar, stopChar, cdChar) {
        const props = this.props;
        const gw = props.charGapWidth || props.narrowWidth;
        // module width (bar + space + gap)
        const mw = props.narrowWidth * 4 + props.wideWidth * 3 + gw;
        let tw = props.quietWidth * 2 - gw;
        const data2 = `${startChar}${data}${cdChar}${stopChar}`;
        for (const c of data2) {
            const z = charactersMap.get(c);
            if (z === void 0) {
                throw new Error("NW7: character is out of range.");
            }
            const wide = z.width - 7;
            const narrow = 7 - wide;
            tw += props.narrowWidth * narrow + props.wideWidth * wide + gw;
        }
        return {
            // total width (quiet + data + start + stop + cd)
            tw,
            // total height (quiet + bar + text)
            th: props.quietHeight * 2 + props.height + (props.drawText ? props.textHeight : 0)
        };
    }
    calcCheckDigit(data) {
        let cdChar = "";
        if (this.props.addCheckDigit) {
            let cd = 0;
            for (let i = 0; i < data.length; i++) {
                const z = charactersMap.get(data[i]);
                if (z === void 0) {
                    throw new Error("NW7: character is out of range.");
                }
                cd = (cd + z.index) % 16;
            }
            const cdch = reverseMap.get((16 - cd) % 16);
            if (cdch === void 0) {
                throw new Error("NW7: check digit is out of range.");
            }
            cdChar = cdch;
        }
        return cdChar;
    }
    encodeData(data) {
        return { data, startChar: this.props.startChar || "", stopChar: this.props.stopChar || "" };
    }
    getBarSpaceWidth() {
        const props = this.props;
        const gw = props.charGapWidth || props.narrowWidth;
        return [gw, props.narrowWidth, props.wideWidth];
    }
}
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