ShowImage.js
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import React, { Component } from 'react';
import { Image } from 'antd';
import './ShowImage.less';
import FullScreen from '../../../assets/quanping.svg';
export default class ShowImg extends Component {
constructor(props) {
super(props);
this.state = {
f: this.props.firstIndex,
R: 0,
S: 1,
i: 0,
SS: 1,
data: this.props.data,
fullScreen: false,
// eslint-disable-next-line react/no-unused-state
showimgs: this.props.showimgs,
maxNum: this.props.data !== undefined ? this.props.data.length - 1 : 0,
imgVisible: false,
};
}
componentDidMount() {
}
componentWillReceiveProps(props) {
this.setState({ f: props.firstIndex });
}
// 向左预览
leftshow = () => {
const { maxNum } = this.state;
if (this.state.f === 0) {
this.setState({
f: maxNum, R: 0, S: 1, i: 0, SS: 1,
});
} else {
this.setState({
f: this.state.f - 1, R: 0, S: 1, i: 0, SS: 1,
});
}
// eslint-disable-next-line react/no-string-refs
this.refs.imgstyle.setAttribute('src', this.props.data[this.state.f]);
}
// 向右预览
rightshow = () => {
const { maxNum } = this.state;
if (this.state.f === maxNum) {
this.setState({
f: 0, R: 0, S: 1, i: 0, SS: 1,
});
} else {
this.setState({
f: this.state.f + 1, R: 0, S: 1, i: 0, SS: 1,
});
}
// eslint-disable-next-line react/no-string-refs
this.refs.imgstyle.setAttribute('src', this.props.data[this.state.f]);
}
// 顺时针旋转
rotateright = () => {
this.setState({ R: this.state.R + 90 });
// eslint-disable-next-line react/no-string-refs
this.refs.imgstyle.style.transform = `rotate(${this.state.R}deg) scale(${this.state.SS},${this.state.SS})`;
}
// 逆时针旋转
rotateleft = () => {
this.setState({ R: this.state.R - 90 });
// eslint-disable-next-line react/no-string-refs
this.refs.imgstyle.style.transform = `rotate(${this.state.R}deg) scale(${this.state.SS},${this.state.SS})`;
}
// 放大
showbig = () => {
if (this.state.i >= 0) {
this.setState({ S: this.state.S + 1, i: this.state.i + 1, SS: 1 * (this.state.S + 0.1) });
} else {
this.setState({ S: this.state.S - 1, i: this.state.i + 1, SS: 1 / (this.state.S - 1) });
}
// eslint-disable-next-line react/no-string-refs
this.refs.imgstyle.style.transform = `rotate(${this.state.R}deg) scale(${this.state.SS},${this.state.SS})`;
}
// 缩小
showmin = () => {
if (this.state.i <= 0) {
this.setState({ S: this.state.S + 1, i: this.state.i - 1, SS: 1 / (this.state.S + 1) });
} else {
this.setState({ S: this.state.S - 1, i: this.state.i - 1, SS: 1 * (this.state.S - 1) });
}
// eslint-disable-next-line react/no-string-refs
this.refs.imgstyle.style.transform = `rotate(${this.state.R}deg) scale(${this.state.SS},${this.state.SS})`;
}
// 全屏
fullScreen = () => {
this.setState({
imgVisible: true,
});
// this.setState({ fullScreen: !this.state.fullScreen });
}
render() {
const {
toggleshow, showimgs, imgOffsetWidth, imgOffsetHeight, bFullScreen,
} = this.props;
const {
data, f, R, SS, fullScreen,
} = this.state;
const bigWidth = imgOffsetWidth !== undefined && imgOffsetWidth !== null ? imgOffsetWidth : '950';
const bigHeight = imgOffsetHeight !== undefined && imgOffsetHeight !== null ? imgOffsetHeight : '600';
return (
<div>
{
showimgs ?
<div>
<div className="dilong toggleshow" onClick={toggleshow} />
<div
className="bigimg toggleshow"
style={{ width: fullScreen || bFullScreen ? '100vw' : `${bigWidth}px`, height: fullScreen || bFullScreen ? '100vh' : `${bigHeight}px`, overflow: 'hidden' }}
>
<div className="imgheader" style={{ right: bFullScreen ? '0px' : 'none' }}>
<div className="left_top" onClick={this.leftshow}><i className="icon icon-left" style={{ fontSize: '30px' }} /></div>
<div className="right_top" onClick={this.rightshow}><i className="icon icon-right" style={{ fontSize: '30px' }} /></div>
<div className="rotateright_top" onClick={this.rotateright}><i className="icon icon-rturn" style={{ color: '#999', fontSize: '22px' }} /></div>
<div className="rotateleft_top" onClick={this.rotateleft}><i className="icon icon-lturn" style={{ color: '#999', fontSize: '22px' }} /></div>
<div className="full_screen" onClick={this.fullScreen}><img src={FullScreen} alt="" style={{ width: 22, height: 22 }} /></div>
<div className="showbig_top" onClick={this.showbig}><i className="icon icon-imgbig" style={{ color: '#999', fontSize: '22px' }} /></div>
<div className="showmin_top" onClick={this.showmin}><i className="icon icon-imgmin" style={{ color: '#999', fontSize: '22px' }} /></div>
<div className="close_top" onClick={toggleshow} ><i className="icon icon-close" style={{ color: '#999', fontSize: '22px' }} /></div>
<div className="headtitle">预览图片</div>
</div>
<div className="previewBox">
{/* eslint-disable-next-line react/no-string-refs */}
<img src={data[f]} className="imgstyle" style={{ transform: `rotate(${R}deg) scale(${SS},${SS})` }} ref="imgstyle" alt="无图片" onDoubleClick={this.fullScreen} />
<Image
src={data[f]}
style={{ display: 'none' }}
preview={{
visible: this.state.imgVisible,
scaleStep: 0.5,
src: data[f],
onVisibleChange: (value) => {
this.setState({
imgVisible: value,
});
},
}}
/>
</div>
</div>
</div>
: null
}
</div>
);
}
}