shalu-system-designer/apps/designer/src/pages/flow/components/Footer/index.tsx

import { AimOutlined, CompressOutlined, ExpandOutlined, MinusOutlined, PlusOutlined, QuestionCircleFilled } from "@ant-design/icons";
import { Button, ConfigProvider, Divider, Slider, Tooltip } from "antd";
import React, { useEffect, useRef, useState } from "react";
import { useFullscreen } from "ahooks";
import { useModel } from "umi";
import { MiniMap } from '@antv/x6-plugin-minimap';
import insertCss from 'insert-css';

insertCss(`
  .navigation-view {
    position: absolute;
    bottom: 32px;
    right: 32px;
    width: 330px;
    height: 210px;
    background-color: #fff;
    border: 1px solid #e9edf2;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
    z-index: 1;
    box-shadow: 0 4px 10px 1px rgba(0, 0, 0, .1);
  }`);
export default function Footer() {
  const [isFullscreen, { toggleFullscreen }] = useFullscreen(document.body);
  const navigationViewRef = useRef(null);
  const { graph, selectedCell } = useModel("flowchartModel");
  const [showNavigation, setShowNavigation] = useState(false);
  const [countCell, setCountCell] = useState(0);
  const [scale, setScale] = useState(100);

  useEffect(() => {
    if(!graph || !navigationViewRef.current) return;

    graph.use(
      new MiniMap({
        container: navigationViewRef.current,
        width: 330,
        height: 210,
        padding: 10,
      }),
    )
  }, [graph, navigationViewRef.current]);

  useEffect(() => {
    graph?.on('cell:change:*', () => {
      const count = graph?.getCells().length || 0;
      setCountCell(count > 0 ? count - 1 : 0)
    });
    graph?.on('scale', (scaleInfo) => {
      setScale(parseInt(scaleInfo.sx * 100 + ''));
    })
  }, [graph]);

  const handleZoom = (value: number) => {
    graph?.zoomTo(value / 100)
  }

  const handleZoomFit = () => {
    graph?.zoomToFit({ })
  }

  const handleOnChange = (value: number) => {
    setScale(Math.round(value));
    handleZoom(value)
  }

  return (
    <ConfigProvider componentSize="small">
      <div className="h-24px bg-white flex justify-between items-center px-16px relative">
        <div className="footer-left"></div>
        <div className="footer-right flex items-center">
          <div>图形：{selectedCell?.length}/{countCell}</div>
          <Divider type="vertical" />
          {/* <Tooltip title="模板">
            <Button type="text" icon={<i className="iconfont icon-buju" />} />
          </Tooltip> */}
          <Tooltip title="聚焦">
            {/* <Button type="text" icon={<i className="iconfont icon-buju" />} /> */}
            <Button type="text" icon={<AimOutlined />} onClick={handleZoomFit}/>
          </Tooltip>
          <Tooltip title={showNavigation ? "关闭视图导航" : "显示视图导航"}>
            <Button type="text" icon={<i className="iconfont icon-map" />} onClick={() => setShowNavigation(!showNavigation)}/>
          </Tooltip>
          <div className="navigation-view" style={{display: showNavigation ? 'block' : 'none'}} ref={navigationViewRef}></div>
          <Button type="text" icon={<MinusOutlined/>} onClick={() => handleZoom( scale - 2)}/>
          <Slider min={20} max={200} className="w-120px m-0 mx-8px" tooltip={{formatter: (val) => `${val}%`}} value={scale} onChange={handleOnChange}/>
          <Button type="text" icon={<PlusOutlined/>} onClick={() => handleZoom( scale + 2)}/>
          <Tooltip title="重置缩放">
            <div className="cursor-pointer mx-8px w-40px" onClick={handleZoomFit}>{scale}%</div>
          </Tooltip>
          {
            isFullscreen 
            ? <Button type="text" icon={<CompressOutlined/>} onClick={toggleFullscreen}/>
            : <Button type="text" icon={<ExpandOutlined/>} onClick={toggleFullscreen}/>
          }
          <Divider type="vertical" />
          <Button type="text" icon={<QuestionCircleFilled/>} />
        </div>
      </div>
    </ConfigProvider>
  );
}