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@@ -1,14 +1,20 @@
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import React, { Component } from 'react';
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import { connect } from 'dva'
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-import { Row, Col } from 'antd';
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-import './index.less'
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+import './index.css'
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+const NODE_ENV = process.env.NODE_ENV;
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+const videoUrl = NODE_ENV === 'development' ? '/api/video' : 'http://hujiahua.site:8004/api/video'
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class Home extends Component {
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- state = {
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- videoSrc: ''
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- }
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canvasVideoRef;
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videoRef;
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-
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+ state = {
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+ showLoading: true
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+ }
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+ componentDidMount () {
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+ this.videoRef.addEventListener('canplay',() => {
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+ console.log('canplay')
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+ this.play()
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+ })
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+ }
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changeState = (key, value, callback = () => {}) => {
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this.setState({
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[key]: value
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@@ -29,6 +35,12 @@ class Home extends Component {
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}
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}
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getVideoSizeAndDrawPosi = () => {
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+ if(!this.videoRef)return {
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+ videoWid: 0,
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+ videoHei: 0,
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+ drawY: 0,
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+ drawX: 0
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+ }
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const { winHeight, winWidth } = this.getWindowSize()
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let offsetWid = this.videoRef.offsetWidth;
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let offsetHei = this.videoRef.offsetHeight;
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@@ -45,6 +57,7 @@ class Home extends Component {
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}
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}
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drawVideo = (target, targetWid = 300, targetHei = 300, drawX, drawY) => {
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+ if (!targetWid || !targetHei) return
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let cxt = this.canvasVideoRef.getContext('2d');
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cxt.drawImage(target, 0, 0, targetWid, targetHei)
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const { data } = cxt.getImageData(0, 0, targetWid, targetHei);
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@@ -59,6 +72,7 @@ class Home extends Component {
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const b = data[index + 2];
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const gray = .299 * r + .587 * g + .114 * b;
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cxt.fillText(this.img2Text(gray), _w, _h + 8);
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+ cxt.fillStyle = `rgba(${r},${g},${b})`
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}
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}
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}
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@@ -67,31 +81,46 @@ class Home extends Component {
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const i = g % 16 === 0 ? parseInt(g / 16) - 1 : parseInt(g / 16);
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return ['#', '&', '@', '%', '$', 'w', '*', '+', 'o', '?', '!', ';', '^', ',', '.', ' '][i];
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}
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- onChangeInput = (e) => {
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- let file = e.target.files[0];
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- if (file) {
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- // this.setState({ videoSrc: 'http://hujiahua.site:9999/test/testVideo.mp4' }, () => {
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- this.setState({ videoSrc: URL.createObjectURL(file) }, () => {
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- this.videoRef.addEventListener('play',() => {
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- let { videoWid, videoHei, drawX, drawY } = this.getVideoSizeAndDrawPosi()
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- let play = () => {
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- this.drawVideo(this.videoRef, videoWid, videoHei, drawX, drawY)
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- requestAnimationFrame(play);
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- };
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- play();
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- }, false)
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+ play = () => {
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+ this.videoRef.addEventListener('play',() => {
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+ this.setState({ showLoading: false }, () => {
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+ let play = () => {
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+ let { videoWid, videoHei, drawX, drawY } = this.getVideoSizeAndDrawPosi()
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+ console.log('this.getVideoSizeAndDrawPosi()',this.getVideoSizeAndDrawPosi())
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+ this.drawVideo(this.videoRef, videoWid, videoHei, drawX, drawY)
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+ requestAnimationFrame(play);
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+ };
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+ play();
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})
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- }
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+ }, false)
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}
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render () {
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- const { videoSrc } = this.state
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- const { winHeight, winWidth} = this.getWindowSize()
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+ const { winHeight, winWidth} = this.getWindowSize();
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+ const { showLoading } = this.state
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+ let { videoWid, videoHei, drawX, drawY } = this.getVideoSizeAndDrawPosi()
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return (
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- <div className='wrap'>
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- <input type="file" id="inputFile" accept=".mp4" onChange={this.onChangeInput} className='input' />
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- <canvas ref={(ref) => { this.canvasVideoRef = ref }} id="canvasShow" width={winWidth} height={winHeight} className='canvas'/>
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- <video id="video" ref={(ref) => { this.videoRef = ref }} autoPlay src={videoSrc} className='video' loop></video>
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- </div>
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+ <React.Fragment>
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+ <div className='wrap'>
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+ <canvas ref={(ref) => { this.canvasVideoRef = ref }} id="canvasShow" width={winWidth} height={winHeight} className='canvas'/>
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+ <video
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+ id="video"
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+ crossOrigin="*"
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+ ref={(ref) => { this.videoRef = ref }}
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+ autoPlay src={videoUrl}
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+ className='video'
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+ width={videoWid && videoWid > winWidth ? winWidth: '100%'}
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+ height={videoHei && videoHei > winHeight ? winHeight : '100%'}
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+ loop/>
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+ </div>
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+ {
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+ showLoading && (
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+ <div className='loading'>
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+ 加载中,请稍候...
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+ </div>
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+ )
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+ }
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+ </React.Fragment>
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+
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)
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}
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}
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胡家华