@adrianso/react-native-barcode-builder/lib/index.js

React Native component to generate barcodes.

"use strict";
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var __rest = (this && this.__rest) || function (s, e) {
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        t[p] = s[p];
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    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.barcodeToSvg = void 0;
// @flow
var react_1 = __importStar(require("react"));
var react_native_1 = require("react-native");
var react_native_svg_1 = __importStar(require("react-native-svg"));
var barcodes_1 = __importDefault(require("jsbarcode/src/barcodes"));
// encode() handles the Encoder call and builds the binary string to be rendered
var encode = function (text, Encoder, options) {
    // If text is not a non-empty string, throw error.
    if (typeof text !== 'string' || text.length === 0) {
        throw new Error('Barcode value must be a non-empty string');
    }
    var encoder;
    try {
        encoder = new Encoder(text, options);
    }
    catch (error) {
        // If the encoder could not be instantiated, throw error.
        throw new Error('Invalid barcode format.');
    }
    // If the input is not valid for the encoder, throw error.
    if (!encoder.valid()) {
        throw new Error('Invalid barcode for selected format.');
    }
    // Make a request for the binary data (and other infromation) that should be rendered
    // encoded stucture is {
    //  text: 'xxxxx',
    //  data: '110100100001....'
    // }
    var encoded = encoder.encode();
    return encoded;
};
var drawSvgBarCode = function (encoding) {
    var rects = [];
    // binary data of barcode
    var binary = encoding.data;
    var barWidth = 0;
    var x = 0;
    var yFrom = 0;
    for (var b = 0; b < binary.length; b++) {
        x = b;
        if (binary[b] === '1') {
            barWidth++;
        }
        else if (barWidth > 0) {
            rects[rects.length] = drawRect(x - barWidth, yFrom, barWidth, 100);
            barWidth = 0;
        }
    }
    // Last draw is needed since the barcode ends with 1
    if (barWidth > 0) {
        rects[rects.length] = drawRect(x - barWidth + 1, yFrom, barWidth, 100);
    }
    return rects;
};
var drawRect = function (x, y, width, height) {
    return "M".concat(x, ",").concat(y, "h").concat(width, "v").concat(height, "h-").concat(width, "z");
};
var barcodeToSvg = function (options) {
    var _a = options.format, format = _a === void 0 ? 'CODE128' : _a, _b = options.lineColor, lineColor = _b === void 0 ? '#000000' : _b, value = options.value, _c = options.width, width = _c === void 0 ? 100 : _c, _d = options.height, height = _d === void 0 ? 100 : _d;
    var encoder = barcodes_1.default[format];
    var encoded = encode(value, encoder, options);
    var bars = drawSvgBarCode(encoded);
    var barCodeWidth = encoded.data.length;
    return "\n      <svg xmlns=\"http://www.w3.org/2000/svg\" width=\"".concat(width, "\" height=\"").concat(height, "\" viewBox=\"0 0 ").concat(barCodeWidth, " 100\" preserveAspectRatio=\"xMinYMin slice\">\n        <path d=\"").concat(bars.join(' '), "\" fill=\"").concat(lineColor, "\"/>\n      </svg>\n    ");
};
exports.barcodeToSvg = barcodeToSvg;
var Barcode = function (props) {
    var _a = props.format, format = _a === void 0 ? 'CODE128' : _a, _b = props.lineColor, lineColor = _b === void 0 ? '#000000' : _b, _c = props.flat, flat = _c === void 0 ? false : _c, value = props.value, width = props.width, height = props.height, viewProps = __rest(props, ["format", "lineColor", "flat", "value", "width", "height"]);
    var _d = (0, react_1.useState)([]), bars = _d[0], setBars = _d[1];
    var _e = (0, react_1.useState)(0), barCodeWidth = _e[0], setBarCodeWidth = _e[1];
    (0, react_1.useEffect)(function () {
        var encoder = barcodes_1.default[format];
        var encoded = encode(value, encoder, {
            format: format,
            lineColor: lineColor,
            flat: flat,
            value: value,
            width: width,
            height: height,
        });
        if (encoded) {
            setBars(drawSvgBarCode(encoded));
            setBarCodeWidth(encoded.data.length);
        }
    }, [format, value, lineColor, flat, width, height]);
    return (<react_native_1.View {...viewProps}>
      <react_native_svg_1.default height="100%" width="100%" viewBox={"0 0 ".concat(barCodeWidth, " 100")} preserveAspectRatio="xMinYMin slice" fill={lineColor}>
        <react_native_svg_1.Path d={bars.join(' ')}/>
      </react_native_svg_1.default>
    </react_native_1.View>);
};
exports.default = Barcode;