yuang-framework-ui-pc/lib/ele-qr-code/util.cjs

yuang-framework-ui-pc Library

"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const qrcodegen = require("./qrcodegen");
const ERROR_LEVEL_MAP = {
  L: qrcodegen.QrCode.Ecc.LOW,
  M: qrcodegen.QrCode.Ecc.MEDIUM,
  Q: qrcodegen.QrCode.Ecc.QUARTILE,
  H: qrcodegen.QrCode.Ecc.HIGH
};
const DEFAULT_IMG_SCALE = 0.1;
const SUPPORTS_PATH2D = function() {
  try {
    new Path2D().addPath(new Path2D());
  } catch (e) {
    return false;
  }
  return true;
}();
function getImageSettings(imageSettings, size, margin, cells) {
  if (imageSettings == null || !imageSettings.src) {
    return null;
  }
  const numCells = cells.length + margin * 2;
  const defaultSize = Math.floor(size * DEFAULT_IMG_SCALE);
  const scale = numCells / size;
  const w = (imageSettings.width || defaultSize) * scale;
  const h = (imageSettings.height || defaultSize) * scale;
  const x = imageSettings.x == null ? cells.length / 2 - w / 2 : imageSettings.x * scale;
  const y = imageSettings.y == null ? cells.length / 2 - h / 2 : imageSettings.y * scale;
  let excavation = null;
  if (imageSettings.excavate) {
    const floorX = Math.floor(x);
    const floorY = Math.floor(y);
    const ceilW = Math.ceil(w + x - floorX);
    const ceilH = Math.ceil(h + y - floorY);
    excavation = { x: floorX, y: floorY, w: ceilW, h: ceilH };
  }
  return { x, y, h, w, excavation };
}
function excavateModules(modules, excavation) {
  return modules.slice().map((row, y) => {
    if (y < excavation.y || y >= excavation.y + excavation.h) {
      return row;
    }
    return row.map((cell, x) => {
      if (x < excavation.x || x >= excavation.x + excavation.w) {
        return cell;
      }
      return false;
    });
  });
}
function generatePath(modules, margin = 0) {
  const ops = [];
  modules.forEach(function(row, y) {
    let start = null;
    row.forEach(function(cell, x) {
      if (!cell && start !== null) {
        ops.push(
          `M${start + margin} ${y + margin}h${x - start}v1H${start + margin}z`
        );
        start = null;
        return;
      }
      if (x === row.length - 1) {
        if (!cell) {
          return;
        }
        if (start === null) {
          ops.push(`M${x + margin},${y + margin} h1v1H${x + margin}z`);
        } else {
          ops.push(
            `M${start + margin},${y + margin} h${x + 1 - start}v1H${start + margin}z`
          );
        }
        return;
      }
      if (cell && start === null) {
        start = x;
      }
    });
  });
  return ops.join("");
}
exports.DEFAULT_IMG_SCALE = DEFAULT_IMG_SCALE;
exports.ERROR_LEVEL_MAP = ERROR_LEVEL_MAP;
exports.SUPPORTS_PATH2D = SUPPORTS_PATH2D;
exports.excavateModules = excavateModules;
exports.generatePath = generatePath;
exports.getImageSettings = getImageSettings;