import React from 'react';
import styles from './index.less';
import { Button, Card } from 'antd';

interface IVideoPanelProps {}

interface IVideoPanelSate {
 cardCount: number;
}

class VideoPanel extends React.Component<IVideoPanelProps, IVideoPanelSate> {
 constructor(props: Readonly<{}>) {
  super(props);
  this.state = {
   cardCount: 1,
  };
 }

 // 动态生成Grid
 createCard() {
  var res = [];
  for (var i = 0; i < this.state.cardCount * this.state.cardCount; i++) {
   res.push(<Card className={styles['video_panel' + this.state.cardCount]} />);
  }
  return res;
 }

 // 动态生成控制按钮
 createControlButon() {
  var res = [];
  const btnCount = 4;
  for (let i = 1; i <= btnCount; i++) {
   res.push(
    <Button
     key={i}
     className={styles['control_Button']}
     type="primary"
     onClick={() => {
      this.changeCardCount(i);
     }}
    >
     {i + '*' + i}
    </Button>,
   );
  }

  return res;
 }

 // 修改显示的格子数
 changeCardCount(count: any) {
  this.setState({
   cardCount: count,
  });
 }

 render() {
  return (
   <div className={styles.main}>
    <div className={styles.main_child}>
     <div className={styles.left}>
      <div className={styles.left_top}></div>
      <div className={styles.left_bottom}></div>
     </div>
     <div className={styles.right}>
      <div className={styles.right_top}>{this.createCard()}</div>
      <div className={styles.right_bottom}>{this.createControlButon()}</div>
     </div>
    </div>
   </div>
  );
 }
}

export default VideoPanel;

@import '~antd/es/style/themes/default.less';

.main {
 position: absolute;
 width: 100%;
 height: 100%;
 background: red;
}

@ptcWidth: 250px;
@btnAreaHeight: 50px;
@videoPanelMargin: 5px;

.main_child {
 display: flex;
 height: 100%;
}

.left {
 width: @ptcWidth;
 height: 100%;
 background: green;
}

.left_top {
 width: 100%;
 height: @ptcWidth;
 background: orange;
}

.left_bottom {
 width: 100%;
 height: calc(100% - @ptcWidth);
 background: #ccc;
}

.right {
 width: calc(100% - @ptcWidth);
 height: 100%;
 background: #f60;
}

.right_top {
 width: 100%;
 height: calc(100% - @btnAreaHeight);
 background: blue;
 display: flex;
 flex-wrap: wrap;
}

.right_bottom {
 width: 100%;
 height: @btnAreaHeight;
 background: #f90;
}

.control_Button {
 margin: 2px;
}

.video_panel(@count) {
 width: calc(100% / @count - @videoPanelMargin * 2);
 height: calc(100% / @count - @videoPanelMargin * 2);
 margin: @videoPanelMargin;
}

// 1*1
.video_panel1 {
 .video_panel(1);
}

// 2*2
.video_panel2 {
 .video_panel(2);
}

// 3*3
.video_panel3 {
 .video_panel(3);
}

// 4*4
.video_panel4 {
 .video_panel(4);
}