2021-08-06

king

2021-08-06 992f25d08ea2b5a6438ccc792a5c723b8a72f674

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import React, {Component} from 'react'
import {
  RotateLeftOutlined,
  RotateRightOutlined,
  CloseOutlined,
  ZoomOutOutlined,
  ZoomInOutlined,
  LeftOutlined,
  RightOutlined
} from '@ant-design/icons'
 
import MKEmitter from '@/utils/events.js'
import './index.scss'
 
class ImgScale extends Component {
  state = {
    className: 'close',
    url: '',
    list: [],
    scale: 1,
    rotate: 0,
    index: 0
  }
 
  componentDidMount () {
    MKEmitter.addListener('mkImageScale', this.mkImageScale)
  }
 
  componentWillUnmount () {
    this.setState = () => {
      return
    }
    MKEmitter.removeListener('mkImageScale', this.mkImageScale)
  }
 
  mkImageScale = (src, list = []) => {
    const { url } = this.state
 
    if (url || !src) return
 
    let index = 0
 
    if (list.length > 0) {
      index = list.indexOf(src)
    }
 
    this.setState({url: src, className: 'opening', list, scale: 1, rotate: 0, index})
    setTimeout(() => {
      this.setState({className: 'open'})
    }, 300)
  }
 
  close = () => {
    this.setState({className: 'closeing'})
    setTimeout(() => {
      this.setState({className: 'close', url: ''})
    }, 300)
  }
 
  zoomIn = () => {
    this.setState({scale: this.state.scale + 1})
  }
 
  zoomOut = () => {
    const { scale } = this.state
 
    if (scale === 1) return
 
    this.setState({scale: scale - 1})
  }
 
  rotateRight = () => {
    this.setState({rotate: this.state.rotate + 90})
  }
 
  rotateLeft = () => {
    this.setState({rotate: this.state.rotate - 90})
  }
 
  prev = () => {
    const { list, index } = this.state
    
    this.setState({url: list[index - 1], index: index - 1})
  }
 
  next = () => {
    const { list, index } = this.state
    
    this.setState({url: list[index + 1], index: index + 1})
  }
 
  render() {
    const { index, url, scale, rotate, className, list } = this.state
 
    return (
      <div className={'mk-preview ' + className}>
        <div className="mk-image-preview-mask"></div>
        <div className="mk-image-preview-wrap">
          <div className="mk-image-preview">
            <div className="mk-image-preview-content">
              <div className="mk-image-preview-body">
                <ul className="mk-image-preview-operations">
                  <li className="mk-image-preview-operations-operation" onClick={this.close}>
                    <CloseOutlined />
                  </li>
                  <li className="mk-image-preview-operations-operation" onClick={this.zoomIn}>
                    <ZoomInOutlined />
                  </li>
                  <li className={'mk-image-preview-operations-operation ' + (scale === 1 ? 'mk-image-preview-operations-operation-disabled' : '')} onClick={this.zoomOut}>
                    <ZoomOutOutlined />
                  </li>
                  <li className="mk-image-preview-operations-operation" onClick={this.rotateRight}>
                    <RotateRightOutlined />
                  </li>
                  <li className="mk-image-preview-operations-operation" onClick={this.rotateLeft}>
                    <RotateLeftOutlined />
                  </li>
                </ul>
                <div className="mk-image-preview-img-wrapper" style={{transform: 'translate3d(0px, 0px, 0px)'}}>
                  {url ? <img className="mk-image-preview-img" alt="" src={url} style={{transform: `scale3d(${scale}, ${scale}, 1) rotate(${rotate}deg)`}}/> : null}
                </div>
                {index ? <LeftOutlined className="mk-image-preview-switch-left" onClick={this.prev}/> : null}
                {list.length > index + 1 ? <RightOutlined className="mk-image-preview-switch-right" onClick={this.next}/> : null}
              </div>
            </div>
          </div>
        </div>
      </div>
    )
  }
}
 
export default ImgScale