126 lines
4.1 KiB
JavaScript
126 lines
4.1 KiB
JavaScript
import React from 'react';
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const ThumbnailPreview = ({dataUrl}) => {
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const thumbnailPreviewStyle = {
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width : '30%',
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padding: '1%',
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display: 'inline-block',
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}
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return (
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<div style={thumbnailPreviewStyle}>
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{ dataUrl ? (
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<img style={{width: '100%'}} src={dataUrl} alt='image preview here' />
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) : (
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<p>loading...</p>
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)
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}
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</div>
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);
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}
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class PublishThumbnailInput extends React.Component {
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constructor (props) {
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super(props);
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this.state = {
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error: null,
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};
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}
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componentDidMount () {
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this.setClaimAndThumbnail(this.props.publishClaim);
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this.createThreePotentialThumbnails();
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}
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componentWillReceiveProps (nextProps) {
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if (nextProps.publishFile !== this.publishFile) {
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// this.createThreePotentialThumbnails();
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}
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if (nextProps.publishClaim !== this.props.publishClaim) {
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console.log(nextProps.publishClaim, this.props.publishClaim);
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this.setClaimAndThumbnail(nextProps.publishClaim);
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}
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}
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createThreePotentialThumbnails () {
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const videoFile = this.props.publishFile;
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console.log('video file', videoFile);
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Promise.all([this.createThumbnail(videoFile), this.createThumbnail(videoFile), this.createThumbnail(videoFile)])
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.then(([thumbOne, thumbTwo, thumbThree]) => {
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// set the potential thumbnails
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console.log([thumbOne, thumbTwo, thumbThree]);
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this.selectVideoThumb(thumbOne);
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this.setPossibleThumbnailFiles(thumbOne, thumbTwo, thumbThree);
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})
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.catch(error => {
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this.setState({error: error.message});
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});
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}
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createThumbnail (file) {
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return new Promise((resolve, reject) => {
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console.log('creating a thumbnail');
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var fileReader = new FileReader();
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fileReader.onload = () => {
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console.log('thumbnail loaded');
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const blob = new Blob([fileReader.result], {type: file.type});
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const url = URL.createObjectURL(blob);
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let video = document.createElement('video');
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const timeupdate = () => {
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if (snapImage()) {
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video.removeEventListener('timeupdate', timeupdate);
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video.pause();
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}
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};
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const snapImage = () => {
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let canvas = document.createElement('canvas');
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canvas.width = video.videoWidth;
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canvas.height = video.videoHeight;
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canvas.getContext('2d').drawImage(video, 0, 0, canvas.width, canvas.height);
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const imageDataUrl = canvas.toDataURL();
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// console.log('imageDataUrl', imageDataUrl);
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const success = imageDataUrl.length > 1000;
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if (success) { // do something with the image
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return resolve(imageDataUrl);
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// URL.revokeObjectURL(url);
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}
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reject(success);
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};
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video.addEventListener('loadeddata', () => {
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if (snapImage()) {
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video.removeEventListener('timeupdate', timeupdate);
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}
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});
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video.addEventListener('timeupdate', timeupdate);
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video.preload = 'metadata';
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video.src = url;
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// Load video in Safari / IE11
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video.muted = true;
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video.playsInline = true;
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video.play();
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};
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fileReader.readAsArrayBuffer(file);
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});
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}
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selectVideoThumb (dataUrl) {
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// update this.props.selectedFile
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this.props.onThumbnailFileSelect(dataUrl);
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}
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setPossibleThumbnailFiles (fileOne, fileTwo, fileThree) {
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console.log('updating thumbnail file options');
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this.props.onThumbnailFileOptionsChange(fileOne, fileTwo, fileThree);
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}
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setClaimAndThumbnail (claim) {
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// set thumbnail claim based on publish claim name
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const url = `${this.props.host}/${this.props.channel}/${claim}.jpeg`;
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this.props.onThumbnailClaimChange(claim, url);
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}
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render () {
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return (
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<div>
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<label className="label">Thumbnail:</label>
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<div>
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<p className="info-message-placeholder info-message--failure">{this.state.error}</p>
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{this.props.potentialFiles.map((file, index) => <ThumbnailPreview dataUrl={file} key={index}/>)}
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</div>
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</div>
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);
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}
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}
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export default PublishThumbnailInput;
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