ant-design/components/upload/style/motion.ts

import { Keyframes } from '@ant-design/cssinjs';

import type { UploadToken } from '.';
import { initFadeMotion } from '../../style/motion';
import type { GenerateStyle } from '../../theme/internal';

// =========================== Motion ===========================
const genMotionStyle: GenerateStyle<UploadToken> = (token) => {
  const { componentCls } = token;

  const uploadAnimateInlineIn = new Keyframes('uploadAnimateInlineIn', {
    from: {
      width: 0,
      height: 0,
      padding: 0,
      opacity: 0,
      margin: token.calc(token.marginXS).div(-2).equal(),
    },
  });

  const uploadAnimateInlineOut = new Keyframes('uploadAnimateInlineOut', {
    to: {
      width: 0,
      height: 0,
      padding: 0,
      opacity: 0,
      margin: token.calc(token.marginXS).div(-2).equal(),
    },
  });

  const inlineCls = `${componentCls}-animate-inline`;
  return [
    {
      [`${componentCls}-wrapper`]: {
        [`${inlineCls}-appear, ${inlineCls}-enter, ${inlineCls}-leave`]: {
          animationDuration: token.motionDurationSlow,
          animationTimingFunction: token.motionEaseInOutCirc,
          animationFillMode: 'forwards',
        },

        [`${inlineCls}-appear, ${inlineCls}-enter`]: {
          animationName: uploadAnimateInlineIn,
        },

        [`${inlineCls}-leave`]: {
          animationName: uploadAnimateInlineOut,
        },
      },
    },
    {
      [`${componentCls}-wrapper`]: initFadeMotion(token),
    },
    uploadAnimateInlineIn,
    uploadAnimateInlineOut,
  ];
};

export default genMotionStyle;