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{"remainingRequest":"C:\\Users\\Admin\\Desktop\\education\\frontend\\node_modules\\babel-loader\\lib\\index.js!C:\\Users\\Admin\\Desktop\\education\\frontend\\src\\utils\\adaptive.js","dependencies":[{"path":"C:\\Users\\Admin\\Desktop\\education\\frontend\\src\\utils\\adaptive.js","mtime":1787567871570},{"path":"C:\\Users\\Admin\\Desktop\\education\\frontend\\babel.config.js","mtime":1787567871334},{"path":"C:\\Users\\Admin\\Desktop\\education\\frontend\\node_modules\\cache-loader\\dist\\cjs.js","mtime":1787309791955},{"path":"C:\\Users\\Admin\\Desktop\\education\\frontend\\node_modules\\babel-loader\\lib\\index.js","mtime":1787309793142}],"contextDependencies":[],"result":[{"type":"Buffer","data":"base64:"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.MIN_SCALE = exports.MAX_SCALE = exports.DEFAULT_DESIGN_WIDTH = void 0;
exports.initAdaptive = initAdaptive;
/**
 * 全局视口等比缩放 —— 让整个系统在不同大小屏幕（桌面 1280~4K）下布局不崩塌。
 *
 * 原理：
 *   以 DESIGN_WIDTH（1920）为设计基准宽度。将视口宽度与设计宽的比值作为缩放倍数，
 *   作用到文档根节点 <html> 的 zoom 上：
 *     - 视口 < 设计宽（如 1280）：zoom < 1，整体等比缩小，避免窄屏布局被撑破；
 *     - 视口 = 设计宽（1920）：zoom = 1，原生 1:1 显示；
 *     - 视口 > 设计宽（如 4K 3840）：zoom = 2，整体等比放大，大屏不再留白/字小。
 *   缩放倍数被限制在 MIN_SCALE ~ MAX_SCALE 之间，MAX_SCALE=2 恰好覆盖 4K（3840/1920）。
 *
 *   采用 zoom 挂在 documentElement 上，可覆盖包括 Element UI 挂载到 body 的
 *   弹窗/提示/下拉选择在内的所有内容，保证整套界面一致缩放、不塌陷。
 *
 * 兼容性：
 *   - zoom：Chrome/Edge/Safari/Opera 全系、Firefox 126+(2024-05 起)、
 *     以及国内常见 Chromium 内核浏览器（360/QQ/微信等）均支持；
 *   - 本方案对不支持 zoom 的旧浏览器（如 2024 前的 Firefox）做能力探测，
 *     自动降级为 transform: scale() 回退，保证不崩塌、可正常使用。
 */

var initialized = false;
var DEFAULT_DESIGN_WIDTH = exports.DEFAULT_DESIGN_WIDTH = 1920;
// 最小缩放倍数：极窄视口的安全下限，避免文字过小/布局异常
var MIN_SCALE = exports.MIN_SCALE = 0.5;
// 最大缩放倍数：2 对应 4K（3840/1920=2），更高分辨率也封顶在此，避免过度放大
var MAX_SCALE = exports.MAX_SCALE = 2;

/**
 * 探测当前浏览器是否支持 CSS zoom 属性。
 * 现代 Chromium/Safari/Firefox(≥126) 返回 true；旧 Firefox(<126) 返回 false。
 * @returns {boolean}
 */
function isZoomSupported() {
  var el = document.createElement('div');
  el.style.zoom = '0.5';
  // 能读回 "0.5" 说明浏览器真正支持
  return el.style.zoom === '0.5';
}

/**
 * 初始化全局自适应。可在任意入口调用，重复调用幂等。
 * @param {number} [designWidth] 设计基准宽度，默认 1920
 */
function initAdaptive() {
  var designWidth = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : DEFAULT_DESIGN_WIDTH;
  if (initialized) {
    return;
  }
  initialized = true;
  var useZoom = isZoomSupported();

  // rAF 帧对齐节流：把同一帧内多次 resize 合并为一次
  var rafId = null;
  // 真实写入节流 + 尾随兜底：拖拽/设备模拟期间 resize 高频触发，
  // 若每帧都写 html.zoom 会强制整页重排+重绘导致卡顿，因此限制真实写入频率
  var lastAppliedScale = -1;
  var lastWriteAt = 0;
  var trailingTimer = null;
  var WRITE_MIN_INTERVAL = 100; // ms

  function computeScale() {
    var root = document.documentElement;
    var width = window.innerWidth || root && root.clientWidth || designWidth;
    var ratio = width / designWidth;
    // 收敛到 [MIN_SCALE, MAX_SCALE]，规避极端宽高的异常比例
    return Math.min(MAX_SCALE, Math.max(MIN_SCALE, ratio));
  }
  function writeScale(scale) {
    var root = document.documentElement;
    if (!root) {
      return;
    }
    // 值未变化：跳过，避免冗余的样式失效/整页重排
    if (Math.abs(scale - lastAppliedScale) < 1e-4) {
      return;
    }
    lastAppliedScale = scale;
    if (scale === 1) {
      clearScale(root);
      return;
    }
    if (useZoom) {
      // 首选：zoom 参与布局计算，视觉与占位一致，最平滑
      root.style.zoom = String(scale);
      // 注入缩放与逆缩放变量：逆缩放用于把挂到 body 的 Element 浮层还原为 1:1，
      // 以抵消 zoom 对 getBoundingClientRect 坐标造成的二次缩放（否则下拉框位置错乱）
      root.style.setProperty('--adaptive-scale', String(scale));
      root.style.setProperty('--adaptive-scale-inv', String(1 / scale));
    } else {
      // 回退：transform 仅影响视觉；将布局宽度固定为设计宽并从左上角缩放，
      // 使其铺满视口且不改变内部结构，旧浏览器也能正常使用
      root.style.transformOrigin = 'top left';
      root.style.width = "".concat(designWidth, "px");
      root.style.transform = "scale(".concat(scale, ")");
    }
  }
  function clearScale(root) {
    if (useZoom) {
      root.style.zoom = '';
      root.style.removeProperty('--adaptive-scale');
      root.style.removeProperty('--adaptive-scale-inv');
    } else {
      root.style.transform = '';
      root.style.transformOrigin = '';
      root.style.width = '';
    }
  }

  /** 立即计算并写入一次（带值变化守卫） */
  function applyNow() {
    lastWriteAt = Date.now();
    writeScale(computeScale());
  }
  function onResize() {
    if (document.hidden) {
      return; // 后台标签不执行，避免无谓开销
    }
    if (rafId) {
      return; // 本帧内已有待执行任务，合并
    }
    rafId = window.requestAnimationFrame(function () {
      rafId = null;
      if (document.hidden) {
        return;
      }
      var now = Date.now();
      if (trailingTimer) {
        clearTimeout(trailingTimer);
      }
      // 距上次真实写入已超过阈值才立即写入，其余情况靠尾随兜底，避免满帧整页重排
      if (now - lastWriteAt >= WRITE_MIN_INTERVAL) {
        applyNow();
      }
      // 尾随：拖拽/改变尺寸停下后，确保落到最终窗口尺寸
      trailingTimer = setTimeout(applyNow, WRITE_MIN_INTERVAL);
    });
  }
  function onVisibilityChange() {
    if (!document.hidden) {
      // 从后台切回时补算一次
      if (trailingTimer) {
        clearTimeout(trailingTimer);
      }
      applyNow();
    }
  }

  // 首次：渲染前同步应用一次，避免首帧闪烁
  applyNow();
  window.addEventListener('resize', onResize);
  // 从后台标签切回来时，若期间窗口尺寸变化（因 hidden 被跳过）需补算一次
  document.addEventListener('visibilitychange', onVisibilityChange);
}"},{"version":3,"names":["initialized","DEFAULT_DESIGN_WIDTH","exports","MIN_SCALE","MAX_SCALE","isZoomSupported","el","document","createElement","style","zoom","initAdaptive","designWidth","arguments","length","undefined","useZoom","rafId","lastAppliedScale","lastWriteAt","trailingTimer","WRITE_MIN_INTERVAL","computeScale","root","documentElement","width","window","innerWidth","clientWidth","ratio","Math","min","max","writeScale","scale","abs","clearScale","String","setProperty","transformOrigin","concat","transform","removeProperty","applyNow","Date","now","onResize","hidden","requestAnimationFrame","clearTimeout","setTimeout","onVisibilityChange","addEventListener"],"sources":["C:/Users/Admin/Desktop/education/frontend/src/utils/adaptive.js"],"sourcesContent":["/**\r\n * 全局视口等比缩放 —— 让整个系统在不同大小屏幕(桌面 1280~4K)下布局不崩塌。\r\n *\r\n * 原理:\r\n * 以 DESIGN_WIDTH(1920)为设计基准宽度。将视口宽度与设计宽的比值作为缩放倍数,\r\n * 作用到文档根节点 <html> 的 zoom 上:\r\n * - 视口 < 设计宽(如 1280):zoom < 1,整体等比缩小,避免窄屏布局被撑破;\r\n * - 视口 = 设计宽(1920):zoom = 1,原生 1:1 显示;\r\n * - 视口 > 设计宽(如 4K 3840):zoom = 2,整体等比放大,大屏不再留白/字小。\r\n * 缩放倍数被限制在 MIN_SCALE ~ MAX_SCALE 之间,MAX_SCALE=2 恰好覆盖 4K(3840/1920)。\r\n *\r\n * 采用 zoom 挂在 documentElement 上,可覆盖包括 Element UI 挂载到 body 的\r\n * 弹窗/提示/下拉选择在内的所有内容,保证整套界面一致缩放、不塌陷。\r\n *\r\n * 兼容性:\r\n * - zoom:Chrome/Edge/Safari/Opera 全系、Firefox 126+(2024-05 起)、\r\n * 以及国内常见 Chromium 内核浏览器(360/QQ/微信等)均支持;\r\n * - 本方案对不支持 zoom 的旧浏览器(如 2024 前的 Firefox)做能力探测,\r\n * 自动降级为 transform: scale() 回退,保证不崩塌、可正常使用。\r\n */\r\n\r\nlet initialized = false\r\n\r\nexport const DEFAULT_DESIGN_WIDTH = 1920\r\n// 最小缩放倍数:极窄视口的安全下限,避免文字过小/布局异常\r\nexport const MIN_SCALE = 0.5\r\n// 最大缩放倍数:2 对应 4K(3840/1920=2),更高分辨率也封顶在此,避免过度放大\r\nexport const MAX_SCALE = 2\r\n\r\n/**\r\n * 探测当前浏览器是否支持 CSS zoom 属性。\r\n * 现代 Chromium/Safari/Firefox(≥126) 返回 true;旧 Firefox(<126) 返回 false。\r\n * @returns {boolean}\r\n */\r\nfunction isZoomSupported() {\r\n const el = document.createElement('div')\r\n el.style.zoom = '0.5'\r\n // 能读回 \"0.5\" 说明浏览器真正支持\r\n return el.style.zoom === '0.5'\r\n}\r\n\r\n/**\r\n * 初始化全局自适应。可在任意入口调用,重复调用幂等。\r\n * @param {number} [designWidth] 设计基准宽度,默认 1920\r\n */\r\nexport function initAdaptive(designWidth = DEFAULT_DESIGN_WIDTH) {\r\n if (initialized) {\r\n return\r\n }\r\n initialized = true\r\n\r\n const useZoom = isZoomSupported()\r\n\r\n // rAF 帧对齐节流:把同一帧内多次 resize 合并为一次\r\n let rafId = null\r\n // 真实写入节流 + 尾随兜底:拖拽/设备模拟期间 resize 高频触发,\r\n // 若每帧都写 html.zoom 会强制整页重排+重绘导致卡顿,因此限制真实写入频率\r\n let lastAppliedScale = -1\r\n let lastWriteAt = 0\r\n let trailingTimer = null\r\n const WRITE_MIN_INTERVAL = 100 // ms\r\n\r\n function computeScale() {\r\n const root = document.documentElement\r\n const width = window.innerWidth || (root && root.clientWidth) || designWidth\r\n const ratio = width / designWidth\r\n // 收敛到 [MIN_SCALE, MAX_SCALE],规避极端宽高的异常比例\r\n return Math.min(MAX_SCALE, Math.max(MIN_SCALE, ratio))\r\n }\r\n\r\n function writeScale(scale) {\r\n const root = document.documentElement\r\n if (!root) {\r\n return\r\n }\r\n // 值未变化:跳过,避免冗余的样式失效/整页重排\r\n if (Math.abs(scale - lastAppliedScale) < 1e-4) {\r\n return\r\n }\r\n lastAppliedScale = scale\r\n\r\n if (scale === 1) {\r\n clearScale(root)\r\n return\r\n }\r\n\r\n if (useZoom) {\r\n // 首选:zoom 参与布局计算,视觉与占位一致,最平滑\r\n root.style.zoom = String(scale)\r\n // 注入缩放与逆缩放变量:逆缩放用于把挂到 body 的 Element 浮层还原为 1:1,\r\n // 以抵消 zoom 对 getBoundingClientRect 坐标造成的二次缩放(否则下拉框位置错乱)\r\n root.style.setProperty('--adaptive-scale', String(scale))\r\n root.style.setProperty('--adaptive-scale-inv', String(1 / scale))\r\n } else {\r\n // 回退:transform 仅影响视觉;将布局宽度固定为设计宽并从左上角缩放,\r\n // 使其铺满视口且不改变内部结构,旧浏览器也能正常使用\r\n root.style.transformOrigin = 'top left'\r\n root.style.width = `${designWidth}px`\r\n root.style.transform = `scale(${scale})`\r\n }\r\n }\r\n\r\n function clearScale(root) {\r\n if (useZoom) {\r\n root.style.zoom = ''\r\n root.style.removeProperty('--adaptive-scale')\r\n root.style.removeProperty('--adaptive-scale-inv')\r\n } else {\r\n root.style.transform = ''\r\n root.style.transformOrigin = ''\r\n root.style.width = ''\r\n }\r\n }\r\n\r\n /** 立即计算并写入一次(带值变化守卫) */\r\n function applyNow() {\r\n lastWriteAt = Date.now()\r\n writeScale(computeScale())\r\n }\r\n\r\n function onResize() {\r\n if (document.hidden) {\r\n return // 后台标签不执行,避免无谓开销\r\n }\r\n if (rafId) {\r\n return // 本帧内已有待执行任务,合并\r\n }\r\n rafId = window.requestAnimationFrame(() => {\r\n rafId = null\r\n if (document.hidden) {\r\n return\r\n }\r\n const now = Date.now()\r\n if (trailingTimer) {\r\n clearTimeout(trailingTimer)\r\n }\r\n // 距上次真实写入已超过阈值才立即写入,其余情况靠尾随兜底,避免满帧整页重排\r\n if (now - 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