352 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			352 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
import PropTypes from 'prop-types';
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import { PureComponent } from 'react';
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import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
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import classNames from 'classnames';
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import { is } from 'immutable';
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import ImmutablePropTypes from 'react-immutable-proptypes';
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import { debounce } from 'lodash';
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import { Blurhash } from 'mastodon/components/blurhash';
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import { autoPlayGif, displayMedia, useBlurhash } from '../initial_state';
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import { IconButton } from './icon_button';
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const messages = defineMessages({
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  toggle_visible: { id: 'media_gallery.toggle_visible', defaultMessage: '{number, plural, one {Hide image} other {Hide images}}' },
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});
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class Item extends PureComponent {
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  static propTypes = {
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    attachment: ImmutablePropTypes.map.isRequired,
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    lang: PropTypes.string,
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    standalone: PropTypes.bool,
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    index: PropTypes.number.isRequired,
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    size: PropTypes.number.isRequired,
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    onClick: PropTypes.func.isRequired,
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    displayWidth: PropTypes.number,
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    visible: PropTypes.bool.isRequired,
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    autoplay: PropTypes.bool,
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  };
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  static defaultProps = {
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    standalone: false,
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    index: 0,
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    size: 1,
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  };
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  state = {
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    loaded: false,
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  };
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  handleMouseEnter = (e) => {
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    if (this.hoverToPlay()) {
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      e.target.play();
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    }
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  };
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  handleMouseLeave = (e) => {
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    if (this.hoverToPlay()) {
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      e.target.pause();
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      e.target.currentTime = 0;
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    }
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  };
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  getAutoPlay() {
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    return this.props.autoplay || autoPlayGif;
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  }
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  hoverToPlay () {
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    const { attachment } = this.props;
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    return !this.getAutoPlay() && attachment.get('type') === 'gifv';
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  }
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  handleClick = (e) => {
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    const { index, onClick } = this.props;
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    if (e.button === 0 && !(e.ctrlKey || e.metaKey)) {
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      if (this.hoverToPlay()) {
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        e.target.pause();
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        e.target.currentTime = 0;
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      }
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      e.preventDefault();
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      onClick(index);
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    }
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    e.stopPropagation();
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  };
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  handleImageLoad = () => {
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    this.setState({ loaded: true });
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  };
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  render () {
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    const { attachment, lang, index, size, standalone, displayWidth, visible } = this.props;
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    let badges = [], thumbnail;
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    let width  = 50;
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    let height = 100;
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    if (size === 1) {
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      width = 100;
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    }
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    if (size === 4 || (size === 3 && index > 0)) {
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      height = 50;
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    }
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    if (attachment.get('description')?.length > 0) {
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      badges.push(<span key='alt' className='media-gallery__gifv__label'>ALT</span>);
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    }
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    const description = attachment.getIn(['translation', 'description']) || attachment.get('description');
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    if (attachment.get('type') === 'unknown') {
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      return (
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        <div className={classNames('media-gallery__item', { standalone, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
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          <a className='media-gallery__item-thumbnail' href={attachment.get('remote_url') || attachment.get('url')} style={{ cursor: 'pointer' }} title={description} lang={lang} target='_blank' rel='noopener noreferrer'>
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            <Blurhash
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              hash={attachment.get('blurhash')}
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              className='media-gallery__preview'
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              dummy={!useBlurhash}
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            />
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          </a>
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        </div>
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      );
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    } else if (attachment.get('type') === 'image') {
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      const previewUrl   = attachment.get('preview_url');
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      const previewWidth = attachment.getIn(['meta', 'small', 'width']);
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      const originalUrl   = attachment.get('url');
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      const originalWidth = attachment.getIn(['meta', 'original', 'width']);
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      const hasSize = typeof originalWidth === 'number' && typeof previewWidth === 'number';
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      const srcSet = hasSize ? `${originalUrl} ${originalWidth}w, ${previewUrl} ${previewWidth}w` : null;
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      const sizes  = hasSize && (displayWidth > 0) ? `${displayWidth * (width / 100)}px` : null;
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      const focusX = attachment.getIn(['meta', 'focus', 'x']) || 0;
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      const focusY = attachment.getIn(['meta', 'focus', 'y']) || 0;
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      const x      = ((focusX /  2) + .5) * 100;
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      const y      = ((focusY / -2) + .5) * 100;
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      thumbnail = (
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        <a
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          className='media-gallery__item-thumbnail'
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          href={attachment.get('remote_url') || originalUrl}
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          onClick={this.handleClick}
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          target='_blank'
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          rel='noopener noreferrer'
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        >
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          <img
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            src={previewUrl}
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            srcSet={srcSet}
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            sizes={sizes}
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            alt={description}
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            title={description}
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            lang={lang}
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            style={{ objectPosition: `${x}% ${y}%` }}
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            onLoad={this.handleImageLoad}
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          />
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        </a>
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      );
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    } else if (attachment.get('type') === 'gifv') {
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      const autoPlay = this.getAutoPlay();
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      badges.push(<span key='gif' className='media-gallery__gifv__label'>GIF</span>);
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      thumbnail = (
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        <div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
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          <video
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            className='media-gallery__item-gifv-thumbnail'
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            aria-label={description}
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            title={description}
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            lang={lang}
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            role='application'
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            src={attachment.get('url')}
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            onClick={this.handleClick}
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            onMouseEnter={this.handleMouseEnter}
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            onMouseLeave={this.handleMouseLeave}
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            autoPlay={autoPlay}
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            playsInline
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            loop
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            muted
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          />
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        </div>
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      );
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    }
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    return (
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      <div className={classNames('media-gallery__item', { standalone, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
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        <Blurhash
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          hash={attachment.get('blurhash')}
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          dummy={!useBlurhash}
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          className={classNames('media-gallery__preview', {
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            'media-gallery__preview--hidden': visible && this.state.loaded,
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          })}
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        />
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        {visible && thumbnail}
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        {badges && (
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          <div className='media-gallery__item__badges'>
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            {badges}
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          </div>
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        )}
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      </div>
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    );
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  }
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}
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class MediaGallery extends PureComponent {
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  static propTypes = {
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    sensitive: PropTypes.bool,
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    media: ImmutablePropTypes.list.isRequired,
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    lang: PropTypes.string,
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    size: PropTypes.object,
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    height: PropTypes.number.isRequired,
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    onOpenMedia: PropTypes.func.isRequired,
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    intl: PropTypes.object.isRequired,
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    defaultWidth: PropTypes.number,
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    cacheWidth: PropTypes.func,
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    visible: PropTypes.bool,
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    autoplay: PropTypes.bool,
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    onToggleVisibility: PropTypes.func,
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  };
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  state = {
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    visible: this.props.visible !== undefined ? this.props.visible : (displayMedia !== 'hide_all' && !this.props.sensitive || displayMedia === 'show_all'),
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    width: this.props.defaultWidth,
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  };
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  componentDidMount () {
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    window.addEventListener('resize', this.handleResize, { passive: true });
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  }
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  componentWillUnmount () {
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    window.removeEventListener('resize', this.handleResize);
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  }
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  UNSAFE_componentWillReceiveProps (nextProps) {
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    if (!is(nextProps.media, this.props.media) && nextProps.visible === undefined) {
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      this.setState({ visible: displayMedia !== 'hide_all' && !nextProps.sensitive || displayMedia === 'show_all' });
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    } else if (!is(nextProps.visible, this.props.visible) && nextProps.visible !== undefined) {
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      this.setState({ visible: nextProps.visible });
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    }
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  }
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  handleResize = debounce(() => {
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    if (this.node) {
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      this._setDimensions();
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    }
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  }, 250, {
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    trailing: true,
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  });
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  handleOpen = () => {
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    if (this.props.onToggleVisibility) {
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      this.props.onToggleVisibility();
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    } else {
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      this.setState({ visible: !this.state.visible });
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    }
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  };
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  handleClick = (index) => {
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    this.props.onOpenMedia(this.props.media, index, this.props.lang);
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  };
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  handleRef = c => {
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    this.node = c;
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    if (this.node) {
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      this._setDimensions();
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    }
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  };
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  _setDimensions () {
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    const width = this.node.offsetWidth;
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    // offsetWidth triggers a layout, so only calculate when we need to
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    if (this.props.cacheWidth) {
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      this.props.cacheWidth(width);
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    }
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    this.setState({
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      width: width,
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    });
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  }
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  isFullSizeEligible() {
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    const { media } = this.props;
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    return media.size === 1 && media.getIn([0, 'meta', 'small', 'aspect']);
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  }
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  render () {
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    const { media, lang, intl, sensitive, defaultWidth, autoplay } = this.props;
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    const { visible } = this.state;
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    const width = this.state.width || defaultWidth;
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    let children, spoilerButton;
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    const style = {};
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    if (this.isFullSizeEligible()) {
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      style.aspectRatio = `${this.props.media.getIn([0, 'meta', 'small', 'aspect'])}`;
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    } else {
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      style.aspectRatio = '3 / 2';
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    }
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    const size     = media.take(4).size;
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    const uncached = media.every(attachment => attachment.get('type') === 'unknown');
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    if (this.isFullSizeEligible()) {
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      children = <Item standalone autoplay={autoplay} onClick={this.handleClick} attachment={media.get(0)} lang={lang} displayWidth={width} visible={visible} />;
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    } else {
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      children = media.take(4).map((attachment, i) => <Item key={attachment.get('id')} autoplay={autoplay} onClick={this.handleClick} attachment={attachment} index={i} lang={lang} size={size} displayWidth={width} visible={visible || uncached} />);
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    }
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    if (uncached) {
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      spoilerButton = (
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        <button type='button' disabled className='spoiler-button__overlay'>
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          <span className='spoiler-button__overlay__label'>
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            <FormattedMessage id='status.uncached_media_warning' defaultMessage='Preview not available' />
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            <span className='spoiler-button__overlay__action'><FormattedMessage id='status.media.open' defaultMessage='Click to open' /></span>
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          </span>
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        </button>
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      );
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    } else if (visible) {
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      spoilerButton = <IconButton title={intl.formatMessage(messages.toggle_visible, { number: size })} icon='eye-slash' overlay onClick={this.handleOpen} ariaHidden />;
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    } else {
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      spoilerButton = (
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        <button type='button' onClick={this.handleOpen} className='spoiler-button__overlay'>
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          <span className='spoiler-button__overlay__label'>
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            {sensitive ? <FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' /> : <FormattedMessage id='status.media_hidden' defaultMessage='Media hidden' />}
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            <span className='spoiler-button__overlay__action'><FormattedMessage id='status.media.show' defaultMessage='Click to show' /></span>
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          </span>
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        </button>
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      );
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    }
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    return (
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      <div className='media-gallery' style={style} ref={this.handleRef}>
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        <div className={classNames('spoiler-button', { 'spoiler-button--minified': visible && !uncached, 'spoiler-button--click-thru': uncached })}>
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          {spoilerButton}
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        </div>
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        {children}
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      </div>
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    );
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  }
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}
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export default injectIntl(MediaGallery);
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