tav-ui/lib/packages/components/qr-code/src/drawCanvas2.js

Tav UI

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var lodashEs = require('lodash-es');
var qrcode = require('qrcode');

const renderQrCode = ({
  canvas,
  content,
  width = 0,
  options: params = {}
}) => {
  const options = lodashEs.cloneDeep(params);
  options.errorCorrectionLevel = options.errorCorrectionLevel || getErrorCorrectionLevel(content);
  return getOriginWidth(content, options).then((_width) => {
    options.scale = width === 0 ? void 0 : width / _width * 4;
    return qrcode.toCanvas(canvas, content, options);
  });
};
function getOriginWidth(content, options) {
  const _canvas = document.createElement("canvas");
  return qrcode.toCanvas(_canvas, content, options).then(() => _canvas.width);
}
function getErrorCorrectionLevel(content) {
  if (content.length > 36) {
    return "M";
  } else if (content.length > 16) {
    return "Q";
  } else {
    return "H";
  }
}

exports.renderQrCode = renderQrCode;
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