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-rw-r--r--app/javascript/flavours/glitch/features/video/index.js522
1 files changed, 522 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/features/video/index.js b/app/javascript/flavours/glitch/features/video/index.js
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+++ b/app/javascript/flavours/glitch/features/video/index.js
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+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { fromJS, is } from 'immutable';
+import { throttle } from 'lodash';
+import classNames from 'classnames';
+import { isFullscreen, requestFullscreen, exitFullscreen } from 'flavours/glitch/util/fullscreen';
+import { displayMedia, useBlurhash } from 'flavours/glitch/util/initial_state';
+import { decode } from 'blurhash';
+
+const messages = defineMessages({
+  play: { id: 'video.play', defaultMessage: 'Play' },
+  pause: { id: 'video.pause', defaultMessage: 'Pause' },
+  mute: { id: 'video.mute', defaultMessage: 'Mute sound' },
+  unmute: { id: 'video.unmute', defaultMessage: 'Unmute sound' },
+  hide: { id: 'video.hide', defaultMessage: 'Hide video' },
+  expand: { id: 'video.expand', defaultMessage: 'Expand video' },
+  close: { id: 'video.close', defaultMessage: 'Close video' },
+  fullscreen: { id: 'video.fullscreen', defaultMessage: 'Full screen' },
+  exit_fullscreen: { id: 'video.exit_fullscreen', defaultMessage: 'Exit full screen' },
+});
+
+const formatTime = secondsNum => {
+  let hours   = Math.floor(secondsNum / 3600);
+  let minutes = Math.floor((secondsNum - (hours * 3600)) / 60);
+  let seconds = secondsNum - (hours * 3600) - (minutes * 60);
+
+  if (hours   < 10) hours   = '0' + hours;
+  if (minutes < 10) minutes = '0' + minutes;
+  if (seconds < 10) seconds = '0' + seconds;
+  return (hours === '00' ? '' : `${hours}:`) + `${minutes}:${seconds}`;
+};
+
+export const findElementPosition = el => {
+  let box;
+
+  if (el.getBoundingClientRect && el.parentNode) {
+    box = el.getBoundingClientRect();
+  }
+
+  if (!box) {
+    return {
+      left: 0,
+      top: 0,
+    };
+  }
+
+  const docEl = document.documentElement;
+  const body  = document.body;
+
+  const clientLeft = docEl.clientLeft || body.clientLeft || 0;
+  const scrollLeft = window.pageXOffset || body.scrollLeft;
+  const left       = (box.left + scrollLeft) - clientLeft;
+
+  const clientTop = docEl.clientTop || body.clientTop || 0;
+  const scrollTop = window.pageYOffset || body.scrollTop;
+  const top       = (box.top + scrollTop) - clientTop;
+
+  return {
+    left: Math.round(left),
+    top: Math.round(top),
+  };
+};
+
+export const getPointerPosition = (el, event) => {
+  const position = {};
+  const box = findElementPosition(el);
+  const boxW = el.offsetWidth;
+  const boxH = el.offsetHeight;
+  const boxY = box.top;
+  const boxX = box.left;
+
+  let pageY = event.pageY;
+  let pageX = event.pageX;
+
+  if (event.changedTouches) {
+    pageX = event.changedTouches[0].pageX;
+    pageY = event.changedTouches[0].pageY;
+  }
+
+  position.y = Math.max(0, Math.min(1, (pageY - boxY) / boxH));
+  position.x = Math.max(0, Math.min(1, (pageX - boxX) / boxW));
+
+  return position;
+};
+
+@injectIntl
+export default class Video extends React.PureComponent {
+
+  static propTypes = {
+    preview: PropTypes.string,
+    src: PropTypes.string.isRequired,
+    alt: PropTypes.string,
+    width: PropTypes.number,
+    height: PropTypes.number,
+    sensitive: PropTypes.bool,
+    startTime: PropTypes.number,
+    onOpenVideo: PropTypes.func,
+    onCloseVideo: PropTypes.func,
+    letterbox: PropTypes.bool,
+    fullwidth: PropTypes.bool,
+    detailed: PropTypes.bool,
+    inline: PropTypes.bool,
+    cacheWidth: PropTypes.func,
+    intl: PropTypes.object.isRequired,
+    visible: PropTypes.bool,
+    onToggleVisibility: PropTypes.func,
+    preventPlayback: PropTypes.bool,
+    blurhash: PropTypes.string,
+    link: PropTypes.node,
+  };
+
+  state = {
+    currentTime: 0,
+    duration: 0,
+    volume: 0.5,
+    paused: true,
+    dragging: false,
+    containerWidth: this.props.width,
+    fullscreen: false,
+    hovered: false,
+    muted: false,
+    revealed: this.props.visible !== undefined ? this.props.visible : (displayMedia !== 'hide_all' && !this.props.sensitive || displayMedia === 'show_all'),
+  };
+
+  componentWillReceiveProps (nextProps) {
+    if (!is(nextProps.visible, this.props.visible) && nextProps.visible !== undefined) {
+      this.setState({ revealed: nextProps.visible });
+    }
+  }
+
+  // hard coded in components.scss
+  // any way to get ::before values programatically?
+  volWidth = 50;
+  volOffset = 70;
+  volHandleOffset = v => {
+    const offset = v * this.volWidth + this.volOffset;
+    return (offset > 110) ? 110 : offset;
+  }
+
+  setPlayerRef = c => {
+    this.player = c;
+
+    if (c && c.offsetWidth && c.offsetWidth != this.state.containerWidth) {
+      if (this.props.cacheWidth) this.props.cacheWidth(this.player.offsetWidth);
+      this.setState({
+        containerWidth: c.offsetWidth,
+      });
+    }
+  }
+
+  setVideoRef = c => {
+    this.video = c;
+
+    if (this.video) {
+      this.setState({ volume: this.video.volume, muted: this.video.muted });
+    }
+  }
+
+  setSeekRef = c => {
+    this.seek = c;
+  }
+
+  setVolumeRef = c => {
+    this.volume = c;
+  }
+
+  setCanvasRef = c => {
+    this.canvas = c;
+
+    if (c && this.props.blurhash) {
+      this._decode();
+    }
+  }
+
+  handleMouseDownRoot = e => {
+    e.preventDefault();
+    e.stopPropagation();
+  }
+
+  handlePlay = () => {
+    this.setState({ paused: false });
+  }
+
+  handlePause = () => {
+    this.setState({ paused: true });
+  }
+
+  handleTimeUpdate = () => {
+    this.setState({
+      currentTime: Math.floor(this.video.currentTime),
+      duration: Math.floor(this.video.duration),
+    });
+  }
+
+  handleVolumeMouseDown = e => {
+    document.addEventListener('mousemove', this.handleMouseVolSlide, true);
+    document.addEventListener('mouseup', this.handleVolumeMouseUp, true);
+    document.addEventListener('touchmove', this.handleMouseVolSlide, true);
+    document.addEventListener('touchend', this.handleVolumeMouseUp, true);
+
+    this.handleMouseVolSlide(e);
+
+    e.preventDefault();
+    e.stopPropagation();
+  }
+
+  handleVolumeMouseUp = () => {
+    document.removeEventListener('mousemove', this.handleMouseVolSlide, true);
+    document.removeEventListener('mouseup', this.handleVolumeMouseUp, true);
+    document.removeEventListener('touchmove', this.handleMouseVolSlide, true);
+    document.removeEventListener('touchend', this.handleVolumeMouseUp, true);
+  }
+
+  handleMouseVolSlide = throttle(e => {
+    const rect = this.volume.getBoundingClientRect();
+    const x = (e.clientX - rect.left) / this.volWidth; //x position within the element.
+
+    if(!isNaN(x)) {
+      var slideamt = x;
+      if(x > 1) {
+        slideamt = 1;
+      } else if(x < 0) {
+        slideamt = 0;
+      }
+      this.video.volume = slideamt;
+      this.setState({ volume: slideamt });
+    }
+  }, 60);
+
+  handleMouseDown = e => {
+    document.addEventListener('mousemove', this.handleMouseMove, true);
+    document.addEventListener('mouseup', this.handleMouseUp, true);
+    document.addEventListener('touchmove', this.handleMouseMove, true);
+    document.addEventListener('touchend', this.handleMouseUp, true);
+
+    this.setState({ dragging: true });
+    this.video.pause();
+    this.handleMouseMove(e);
+
+    e.preventDefault();
+    e.stopPropagation();
+  }
+
+  handleMouseUp = () => {
+    document.removeEventListener('mousemove', this.handleMouseMove, true);
+    document.removeEventListener('mouseup', this.handleMouseUp, true);
+    document.removeEventListener('touchmove', this.handleMouseMove, true);
+    document.removeEventListener('touchend', this.handleMouseUp, true);
+
+    this.setState({ dragging: false });
+    this.video.play();
+  }
+
+  handleMouseMove = throttle(e => {
+    const { x } = getPointerPosition(this.seek, e);
+    const currentTime = Math.floor(this.video.duration * x);
+
+    if (!isNaN(currentTime)) {
+      this.video.currentTime = currentTime;
+      this.setState({ currentTime });
+    }
+  }, 60);
+
+  togglePlay = () => {
+    if (this.state.paused) {
+      this.video.play();
+    } else {
+      this.video.pause();
+    }
+  }
+
+  toggleFullscreen = () => {
+    if (isFullscreen()) {
+      exitFullscreen();
+    } else {
+      requestFullscreen(this.player);
+    }
+  }
+
+  componentDidMount () {
+    document.addEventListener('fullscreenchange', this.handleFullscreenChange, true);
+    document.addEventListener('webkitfullscreenchange', this.handleFullscreenChange, true);
+    document.addEventListener('mozfullscreenchange', this.handleFullscreenChange, true);
+    document.addEventListener('MSFullscreenChange', this.handleFullscreenChange, true);
+
+    if (this.props.blurhash) {
+      this._decode();
+    }
+  }
+
+  componentWillUnmount () {
+    document.removeEventListener('fullscreenchange', this.handleFullscreenChange, true);
+    document.removeEventListener('webkitfullscreenchange', this.handleFullscreenChange, true);
+    document.removeEventListener('mozfullscreenchange', this.handleFullscreenChange, true);
+    document.removeEventListener('MSFullscreenChange', this.handleFullscreenChange, true);
+  }
+
+  componentDidUpdate (prevProps) {
+    if (this.player && this.player.offsetWidth && this.player.offsetWidth != this.state.containerWidth && !this.state.fullscreen) {
+      if (this.props.cacheWidth) this.props.cacheWidth(this.player.offsetWidth);
+      this.setState({
+        containerWidth: this.player.offsetWidth,
+      });
+    }
+    if (this.video && this.state.revealed && this.props.preventPlayback && !prevProps.preventPlayback) {
+      this.video.pause();
+    }
+    if (prevProps.blurhash !== this.props.blurhash && this.props.blurhash) {
+      this._decode();
+    }
+  }
+
+  _decode () {
+    if (!this.canvas || !useBlurhash) return;
+
+    const hash   = this.props.blurhash;
+    const pixels = decode(hash, 32, 32);
+
+    if (pixels) {
+      const ctx       = this.canvas.getContext('2d');
+      const imageData = new ImageData(pixels, 32, 32);
+
+      ctx.putImageData(imageData, 0, 0);
+    }
+  }
+
+  handleFullscreenChange = () => {
+    this.setState({ fullscreen: isFullscreen() });
+  }
+
+  handleMouseEnter = () => {
+    this.setState({ hovered: true });
+  }
+
+  handleMouseLeave = () => {
+    this.setState({ hovered: false });
+  }
+
+  toggleMute = () => {
+    this.video.muted = !this.video.muted;
+    this.setState({ muted: this.video.muted });
+  }
+
+  toggleReveal = () => {
+    if (this.state.revealed) {
+      this.video.pause();
+    }
+
+    if (this.props.onToggleVisibility) {
+      this.props.onToggleVisibility();
+    } else {
+      this.setState({ revealed: !this.state.revealed });
+    }
+  }
+
+  handleLoadedData = () => {
+    if (this.props.startTime) {
+      this.video.currentTime = this.props.startTime;
+      this.video.play();
+    }
+  }
+
+  handleProgress = () => {
+    if (this.video.buffered.length > 0) {
+      this.setState({ buffer: this.video.buffered.end(0) / this.video.duration * 100 });
+    }
+  }
+
+  handleVolumeChange = () => {
+    this.setState({ volume: this.video.volume, muted: this.video.muted });
+  }
+
+  handleOpenVideo = () => {
+    const { src, preview, width, height, alt } = this.props;
+
+    const media = fromJS({
+      type: 'video',
+      url: src,
+      preview_url: preview,
+      description: alt,
+      width,
+      height,
+    });
+
+    this.video.pause();
+    this.props.onOpenVideo(media, this.video.currentTime);
+  }
+
+  handleCloseVideo = () => {
+    this.video.pause();
+    this.props.onCloseVideo();
+  }
+
+  render () {
+    const { preview, src, inline, startTime, onOpenVideo, onCloseVideo, intl, alt, letterbox, fullwidth, detailed, sensitive, link } = this.props;
+    const { containerWidth, currentTime, duration, volume, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
+    const progress = (currentTime / duration) * 100;
+    const playerStyle = {};
+
+    const volumeWidth = (muted) ? 0 : volume * this.volWidth;
+    const volumeHandleLoc = (muted) ? this.volHandleOffset(0) : this.volHandleOffset(volume);
+
+    const computedClass = classNames('video-player', { inactive: !revealed, detailed, inline: inline && !fullscreen, fullscreen, letterbox, 'full-width': fullwidth });
+
+    let { width, height } = this.props;
+
+    if (inline && containerWidth) {
+      width  = containerWidth;
+      height = containerWidth / (16/9);
+
+      playerStyle.height = height;
+    } else if (inline) {
+      return (<div className={computedClass} ref={this.setPlayerRef} tabindex={0}></div>);
+    }
+
+    let warning;
+    if (sensitive) {
+      warning = <FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' />;
+    } else {
+      warning = <FormattedMessage id='status.media_hidden' defaultMessage='Media hidden' />;
+    }
+
+    let preload;
+
+    if (startTime || fullscreen || dragging) {
+      preload = 'auto';
+    } else if (detailed) {
+      preload = 'metadata';
+    } else {
+      preload = 'none';
+    }
+
+    return (
+      <div
+        className={computedClass}
+        style={playerStyle}
+        ref={this.setPlayerRef}
+        onMouseEnter={this.handleMouseEnter}
+        onMouseLeave={this.handleMouseLeave}
+        onMouseDown={this.handleMouseDownRoot}
+        tabIndex={0}
+      >
+        <canvas width={32} height={32} ref={this.setCanvasRef} className={classNames('media-gallery__preview', { 'media-gallery__preview--hidden': revealed })} />
+
+        {revealed && <video
+          ref={this.setVideoRef}
+          src={src}
+          poster={preview}
+          preload={preload}
+          loop
+          role='button'
+          tabIndex='0'
+          aria-label={alt}
+          title={alt}
+          width={width}
+          height={height}
+          volume={volume}
+          onClick={this.togglePlay}
+          onPlay={this.handlePlay}
+          onPause={this.handlePause}
+          onTimeUpdate={this.handleTimeUpdate}
+          onLoadedData={this.handleLoadedData}
+          onProgress={this.handleProgress}
+          onVolumeChange={this.handleVolumeChange}
+        />}
+
+        <div className={classNames('spoiler-button', { 'spoiler-button--hidden': revealed })}>
+          <button type='button' className='spoiler-button__overlay' onClick={this.toggleReveal}>
+            <span className='spoiler-button__overlay__label'>{warning}</span>
+          </button>
+        </div>
+
+        <div className={classNames('video-player__controls', { active: paused || hovered })}>
+          <div className='video-player__seek' onMouseDown={this.handleMouseDown} ref={this.setSeekRef}>
+            <div className='video-player__seek__buffer' style={{ width: `${buffer}%` }} />
+            <div className='video-player__seek__progress' style={{ width: `${progress}%` }} />
+
+            <span
+              className={classNames('video-player__seek__handle', { active: dragging })}
+              tabIndex='0'
+              style={{ left: `${progress}%` }}
+            />
+          </div>
+
+          <div className='video-player__buttons-bar'>
+            <div className='video-player__buttons left'>
+              <button type='button' aria-label={intl.formatMessage(paused ? messages.play : messages.pause)} onClick={this.togglePlay}><i className={classNames('fa fa-fw', { 'fa-play': paused, 'fa-pause': !paused })} /></button>
+              <button type='button' aria-label={intl.formatMessage(muted ? messages.unmute : messages.mute)} onClick={this.toggleMute}><i className={classNames('fa fa-fw', { 'fa-volume-off': muted, 'fa-volume-up': !muted })} /></button>
+              <div className='video-player__volume' onMouseDown={this.handleVolumeMouseDown} ref={this.setVolumeRef}>
+                <div className='video-player__volume__current' style={{ width: `${volumeWidth}px` }} />
+                <span
+                  className={classNames('video-player__volume__handle')}
+                  tabIndex='0'
+                  style={{ left: `${volumeHandleLoc}px` }}
+                />
+              </div>
+
+              {(detailed || fullscreen) && (
+                <span>
+                  <span className='video-player__time-current'>{formatTime(currentTime)}</span>
+                  <span className='video-player__time-sep'>/</span>
+                  <span className='video-player__time-total'>{formatTime(duration)}</span>
+                </span>
+              )}
+
+              {link && <span className='video-player__link'>{link}</span>}
+            </div>
+
+            <div className='video-player__buttons right'>
+              {!onCloseVideo && <button type='button' aria-label={intl.formatMessage(messages.hide)} onClick={this.toggleReveal}><i className='fa fa-fw fa-eye-slash' /></button>}
+              {(!fullscreen && onOpenVideo) && <button type='button' aria-label={intl.formatMessage(messages.expand)} onClick={this.handleOpenVideo}><i className='fa fa-fw fa-expand' /></button>}
+              {onCloseVideo && <button type='button' aria-label={intl.formatMessage(messages.close)} onClick={this.handleCloseVideo}><i className='fa fa-fw fa-compress' /></button>}
+              <button type='button' aria-label={intl.formatMessage(fullscreen ? messages.exit_fullscreen : messages.fullscreen)} onClick={this.toggleFullscreen}><i className={classNames('fa fa-fw', { 'fa-arrows-alt': !fullscreen, 'fa-compress': fullscreen })} /></button>
+            </div>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}