@arco-design/web-vue/lib/watermark/utils/index.js

Arco Design Vue 2.0: A Vue.js 3 UI Library

"use strict";
Object.defineProperties(exports, { __esModule: { value: true }, [Symbol.toStringTag]: { value: "Module" } });
function camelToKebab(camelCase) {
  return camelCase.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase();
}
function styleToString(style) {
  return Object.entries(style).map(([key, value]) => `${camelToKebab(key)}:${value}`).join(";");
}
function canvasToGray(canvas) {
  const ctx = canvas.getContext("2d");
  if (!ctx)
    return;
  const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
  const { data } = imageData;
  for (let i = 0; i < data.length; i += 4) {
    const brightness = (data[i] + data[i + 1] + data[i + 2]) / 3;
    data[i] = brightness;
    data[i + 1] = brightness;
    data[i + 2] = brightness;
  }
  ctx.putImageData(imageData, 0, 0);
}
exports.camelToKebab = camelToKebab;
exports.canvasToGray = canvasToGray;
exports.styleToString = styleToString;