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frontend/node_modules/rc-tabs/es/hooks/useIndicator.js

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+import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
+import raf from "rc-util/es/raf";
+import React, { useEffect, useRef, useState } from 'react';
+var useIndicator = function useIndicator(options) {
+  var activeTabOffset = options.activeTabOffset,
+    horizontal = options.horizontal,
+    rtl = options.rtl,
+    _options$indicator = options.indicator,
+    indicator = _options$indicator === void 0 ? {} : _options$indicator;
+  var size = indicator.size,
+    _indicator$align = indicator.align,
+    align = _indicator$align === void 0 ? 'center' : _indicator$align;
+  var _useState = useState(),
+    _useState2 = _slicedToArray(_useState, 2),
+    inkStyle = _useState2[0],
+    setInkStyle = _useState2[1];
+  var inkBarRafRef = useRef();
+  var getLength = React.useCallback(function (origin) {
+    if (typeof size === 'function') {
+      return size(origin);
+    }
+    if (typeof size === 'number') {
+      return size;
+    }
+    return origin;
+  }, [size]);
+
+  // Delay set ink style to avoid remove tab blink
+  function cleanInkBarRaf() {
+    raf.cancel(inkBarRafRef.current);
+  }
+  useEffect(function () {
+    var newInkStyle = {};
+    if (activeTabOffset) {
+      if (horizontal) {
+        newInkStyle.width = getLength(activeTabOffset.width);
+        var key = rtl ? 'right' : 'left';
+        if (align === 'start') {
+          newInkStyle[key] = activeTabOffset[key];
+        }
+        if (align === 'center') {
+          newInkStyle[key] = activeTabOffset[key] + activeTabOffset.width / 2;
+          newInkStyle.transform = rtl ? 'translateX(50%)' : 'translateX(-50%)';
+        }
+        if (align === 'end') {
+          newInkStyle[key] = activeTabOffset[key] + activeTabOffset.width;
+          newInkStyle.transform = 'translateX(-100%)';
+        }
+      } else {
+        newInkStyle.height = getLength(activeTabOffset.height);
+        if (align === 'start') {
+          newInkStyle.top = activeTabOffset.top;
+        }
+        if (align === 'center') {
+          newInkStyle.top = activeTabOffset.top + activeTabOffset.height / 2;
+          newInkStyle.transform = 'translateY(-50%)';
+        }
+        if (align === 'end') {
+          newInkStyle.top = activeTabOffset.top + activeTabOffset.height;
+          newInkStyle.transform = 'translateY(-100%)';
+        }
+      }
+    }
+    cleanInkBarRaf();
+    inkBarRafRef.current = raf(function () {
+      // Avoid jitter caused by tiny numerical differences
+      // fix https://github.com/ant-design/ant-design/issues/53378
+      var isEqual = inkStyle && newInkStyle && Object.keys(newInkStyle).every(function (key) {
+        var newValue = newInkStyle[key];
+        var oldValue = inkStyle[key];
+        return typeof newValue === 'number' && typeof oldValue === 'number' ? Math.round(newValue) === Math.round(oldValue) : newValue === oldValue;
+      });
+      if (!isEqual) {
+        setInkStyle(newInkStyle);
+      }
+    });
+    return cleanInkBarRaf;
+  }, [JSON.stringify(activeTabOffset), horizontal, rtl, align, getLength]);
+  return {
+    style: inkStyle
+  };
+};
+export default useIndicator;