app/javascript/mastodon/components/media_gallery.js

   1 import React from 'react';
   2 import ImmutablePropTypes from 'react-immutable-proptypes';
   3 import PropTypes from 'prop-types';
   4 import { is } from 'immutable';
   5 import IconButton from './icon_button';
   6 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
   7 import { isIOS } from '../is_mobile';
   8 import classNames from 'classnames';
   9 import { autoPlayGif, displaySensitiveMedia } from '../initial_state';
  10
  11 const messages = defineMessages({
  12   toggle_visible: { id: 'media_gallery.toggle_visible', defaultMessage: 'Toggle visibility' },
  13 });
  14
  15 class Item extends React.PureComponent {
  16
  17   static contextTypes = {
  18     router: PropTypes.object,
  19   };
  20
  21   static propTypes = {
  22     attachment: ImmutablePropTypes.map.isRequired,
  23     standalone: PropTypes.bool,
  24     index: PropTypes.number.isRequired,
  25     size: PropTypes.number.isRequired,
  26     onClick: PropTypes.func.isRequired,
  27   };
  28
  29   static defaultProps = {
  30     standalone: false,
  31     index: 0,
  32     size: 1,
  33   };
  34
  35   handleMouseEnter = (e) => {
  36     if (this.hoverToPlay()) {
  37       e.target.play();
  38     }
  39   }
  40
  41   handleMouseLeave = (e) => {
  42     if (this.hoverToPlay()) {
  43       e.target.pause();
  44       e.target.currentTime = 0;
  45     }
  46   }
  47
  48   hoverToPlay () {
  49     const { attachment } = this.props;
  50     return !autoPlayGif && attachment.get('type') === 'gifv';
  51   }
  52
  53   handleClick = (e) => {
  54     const { index, onClick } = this.props;
  55
  56     if (this.context.router && e.button === 0) {
  57       e.preventDefault();
  58       onClick(index);
  59     }
  60
  61     e.stopPropagation();
  62   }
  63
  64   render () {
  65     const { attachment, index, size, standalone } = this.props;
  66
  67     let width  = 50;
  68     let height = 100;
  69     let top    = 'auto';
  70     let left   = 'auto';
  71     let bottom = 'auto';
  72     let right  = 'auto';
  73
  74     if (size === 1) {
  75       width = 100;
  76     }
  77
  78     if (size === 4 || (size === 3 && index > 0)) {
  79       height = 50;
  80     }
  81
  82     if (size === 2) {
  83       if (index === 0) {
  84         right = '2px';
  85       } else {
  86         left = '2px';
  87       }
  88     } else if (size === 3) {
  89       if (index === 0) {
  90         right = '2px';
  91       } else if (index > 0) {
  92         left = '2px';
  93       }
  94
  95       if (index === 1) {
  96         bottom = '2px';
  97       } else if (index > 1) {
  98         top = '2px';
  99       }
 100     } else if (size === 4) {
 101       if (index === 0 || index === 2) {
 102         right = '2px';
 103       }
 104
 105       if (index === 1 || index === 3) {
 106         left = '2px';
 107       }
 108
 109       if (index < 2) {
 110         bottom = '2px';
 111       } else {
 112         top = '2px';
 113       }
 114     }
 115
 116     let thumbnail = '';
 117
 118     if (attachment.get('type') === 'image') {
 119       const previewUrl = attachment.get('preview_url');
 120       const previewWidth = attachment.getIn(['meta', 'small', 'width']);
 121
 122       const originalUrl = attachment.get('url');
 123       const originalWidth = attachment.getIn(['meta', 'original', 'width']);
 124
 125       const hasSize = typeof originalWidth === 'number' && typeof previewWidth === 'number';
 126
 127       const srcSet = hasSize ? `${originalUrl} ${originalWidth}w, ${previewUrl} ${previewWidth}w` : null;
 128       const sizes = hasSize ? `(min-width: 1025px) ${320 * (width / 100)}px, ${width}vw` : null;
 129
 130       thumbnail = (
 131         <a
 132           className='media-gallery__item-thumbnail'
 133           href={attachment.get('remote_url') || originalUrl}
 134           onClick={this.handleClick}
 135           target='_blank'
 136         >
 137           <img src={previewUrl} srcSet={srcSet} sizes={sizes} alt={attachment.get('description')} title={attachment.get('description')} />
 138         </a>
 139       );
 140     } else if (attachment.get('type') === 'gifv') {
 141       const autoPlay = !isIOS() && autoPlayGif;
 142
 143       thumbnail = (
 144         <div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
 145           <video
 146             className='media-gallery__item-gifv-thumbnail'
 147             aria-label={attachment.get('description')}
 148             role='application'
 149             src={attachment.get('url')}
 150             onClick={this.handleClick}
 151             onMouseEnter={this.handleMouseEnter}
 152             onMouseLeave={this.handleMouseLeave}
 153             autoPlay={autoPlay}
 154             loop
 155             muted
 156           />
 157
 158           <span className='media-gallery__gifv__label'>GIF</span>
 159         </div>
 160       );
 161     }
 162
 163     return (
 164       <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
 165         {thumbnail}
 166       </div>
 167     );
 168   }
 169
 170 }
 171
 172 @injectIntl
 173 export default class MediaGallery extends React.PureComponent {
 174
 175   static propTypes = {
 176     sensitive: PropTypes.bool,
 177     standalone: PropTypes.bool,
 178     media: ImmutablePropTypes.list.isRequired,
 179     size: PropTypes.object,
 180     height: PropTypes.number.isRequired,
 181     onOpenMedia: PropTypes.func.isRequired,
 182     intl: PropTypes.object.isRequired,
 183   };
 184
 185   static defaultProps = {
 186     standalone: false,
 187   };
 188
 189   state = {
 190     visible: !this.props.sensitive || displaySensitiveMedia,
 191   };
 192
 193   componentWillReceiveProps (nextProps) {
 194     if (!is(nextProps.media, this.props.media)) {
 195       this.setState({ visible: !nextProps.sensitive });
 196     }
 197   }
 198
 199   handleOpen = () => {
 200     this.setState({ visible: !this.state.visible });
 201   }
 202
 203   handleClick = (index) => {
 204     this.props.onOpenMedia(this.props.media, index);
 205   }
 206
 207   handleRef = (node) => {
 208     if (node && this.isStandaloneEligible()) {
 209       // offsetWidth triggers a layout, so only calculate when we need to
 210       this.setState({
 211         width: node.offsetWidth,
 212       });
 213     }
 214   }
 215
 216   isStandaloneEligible() {
 217     const { media, standalone } = this.props;
 218     return standalone && media.size === 1 && media.getIn([0, 'meta', 'small', 'aspect']);
 219   }
 220
 221   render () {
 222     const { media, intl, sensitive, height } = this.props;
 223     const { width, visible } = this.state;
 224
 225     let children;
 226
 227     const style = {};
 228
 229     if (this.isStandaloneEligible()) {
 230       if (!visible && width) {
 231         // only need to forcibly set the height in "sensitive" mode
 232         style.height = width / this.props.media.getIn([0, 'meta', 'small', 'aspect']);
 233       } else {
 234         // layout automatically, using image's natural aspect ratio
 235         style.height = '';
 236       }
 237     } else {
 238       // crop the image
 239       style.height = height;
 240     }
 241
 242     if (!visible) {
 243       let warning;
 244
 245       if (sensitive) {
 246         warning = <FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' />;
 247       } else {
 248         warning = <FormattedMessage id='status.media_hidden' defaultMessage='Media hidden' />;
 249       }
 250
 251       children = (
 252         <button className='media-spoiler' onClick={this.handleOpen} style={style} ref={this.handleRef}>
 253           <span className='media-spoiler__warning'>{warning}</span>
 254           <span className='media-spoiler__trigger'><FormattedMessage id='status.sensitive_toggle' defaultMessage='Click to view' /></span>
 255         </button>
 256       );
 257     } else {
 258       const size = media.take(4).size;
 259
 260       if (this.isStandaloneEligible()) {
 261         children = <Item standalone onClick={this.handleClick} attachment={media.get(0)} />;
 262       } else {
 263         children = media.take(4).map((attachment, i) => <Item key={attachment.get('id')} onClick={this.handleClick} attachment={attachment} index={i} size={size} />);
 264       }
 265     }
 266
 267     return (
 268       <div className='media-gallery' style={style}>
 269         <div className={classNames('spoiler-button', { 'spoiler-button--visible': visible })}>
 270           <IconButton title={intl.formatMessage(messages.toggle_visible)} icon={visible ? 'eye' : 'eye-slash'} overlay onClick={this.handleOpen} />
 271         </div>
 272
 273         {children}
 274       </div>
 275     );
 276   }
 277
 278 }