Merge pull request #1380 from ThibG/glitch-soc/merge-upstream

Merge upstream changes

app/javascript/flavours/glitch/actions/dropdown_menu.js

@@ -1,8 +1,8 @@
 export const DROPDOWN_MENU_OPEN = 'DROPDOWN_MENU_OPEN';
 export const DROPDOWN_MENU_CLOSE = 'DROPDOWN_MENU_CLOSE';
 
-export function openDropdownMenu(id, placement, keyboard) {
-  return { type: DROPDOWN_MENU_OPEN, id, placement, keyboard };
+export function openDropdownMenu(id, placement, keyboard, scroll_key) {
+  return { type: DROPDOWN_MENU_OPEN, id, placement, keyboard, scroll_key };
 }
 
 export function closeDropdownMenu(id) {

app/javascript/flavours/glitch/components/blurhash.js

@@ -0,0 +1,65 @@
+// @ts-check
+
+import { decode } from 'blurhash';
+import React, { useRef, useEffect } from 'react';
+import PropTypes from 'prop-types';
+
+/**
+ * @typedef BlurhashPropsBase
+ * @property {string?} hash Hash to render
+ * @property {number} width
+ * Width of the blurred region in pixels. Defaults to 32
+ * @property {number} [height]
+ * Height of the blurred region in pixels. Defaults to width
+ * @property {boolean} [dummy]
+ * Whether dummy mode is enabled. If enabled, nothing is rendered
+ * and canvas left untouched
+ */
+
+/** @typedef {JSX.IntrinsicElements['canvas'] & BlurhashPropsBase} BlurhashProps */
+
+/**
+ * Component that is used to render blurred of blurhash string
+ *
+ * @param {BlurhashProps} param1 Props of the component
+ * @returns Canvas which will render blurred region element to embed
+ */
+function Blurhash({
+  hash,
+  width = 32,
+  height = width,
+  dummy = false,
+  ...canvasProps
+}) {
+  const canvasRef = /** @type {import('react').MutableRefObject<HTMLCanvasElement>} */ (useRef());
+
+  useEffect(() => {
+    const { current: canvas } = canvasRef;
+    canvas.width = canvas.width; // resets canvas
+
+    if (dummy || !hash) return;
+
+    try {
+      const pixels = decode(hash, width, height);
+      const ctx = canvas.getContext('2d');
+      const imageData = new ImageData(pixels, width, height);
+
+      ctx.putImageData(imageData, 0, 0);
+    } catch (err) {
+      console.error('Blurhash decoding failure', { err, hash });
+    }
+  }, [dummy, hash, width, height]);
+
+  return (
+    <canvas {...canvasProps} ref={canvasRef} width={width} height={height} />
+  );
+}
+
+Blurhash.propTypes = {
+  hash: PropTypes.string.isRequired,
+  width: PropTypes.number,
+  height: PropTypes.number,
+  dummy: PropTypes.bool,
+};
+
+export default React.memo(Blurhash);

app/javascript/flavours/glitch/components/media_gallery.js

@@ -7,8 +7,8 @@ import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import { isIOS } from 'flavours/glitch/util/is_mobile';
 import classNames from 'classnames';
 import { autoPlayGif, displayMedia, useBlurhash } from 'flavours/glitch/util/initial_state';
-import { decode } from 'blurhash';
 import { debounce } from 'lodash';
+import Blurhash from 'flavours/glitch/components/blurhash';
 
 const messages = defineMessages({
   hidden: {
@@ -94,36 +94,6 @@ class Item extends React.PureComponent {
     e.stopPropagation();
   }
 
-  componentDidMount () {
-    if (this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  componentDidUpdate (prevProps) {
-    if (prevProps.attachment.get('blurhash') !== this.props.attachment.get('blurhash') && this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  _decode () {
-    if (!useBlurhash) return;
-
-    const hash   = this.props.attachment.get('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);
-    }
-  }
-
-  setCanvasRef = c => {
-    this.canvas = c;
-  }
-
   handleImageLoad = () => {
     this.setState({ loaded: true });
   }
@@ -186,7 +156,11 @@ class Item extends React.PureComponent {
       return (
         <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
           <a className='media-gallery__item-thumbnail' href={attachment.get('remote_url') || attachment.get('url')} style={{ cursor: 'pointer' }} title={attachment.get('description')} target='_blank' rel='noopener noreferrer'>
-            <canvas width={32} height={32} ref={this.setCanvasRef} className='media-gallery__preview' />
+            <Blurhash
+              hash={attachment.get('blurhash')}
+              className='media-gallery__preview'
+              dummy={!useBlurhash}
+            />
           </a>
         </div>
       );
@@ -253,7 +227,13 @@ class Item extends React.PureComponent {
 
     return (
       <div className={classNames('media-gallery__item', { standalone, letterbox })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
-        <canvas width={32} height={32} ref={this.setCanvasRef} className={classNames('media-gallery__preview', { 'media-gallery__preview--hidden': visible && this.state.loaded })} />
+        <Blurhash
+          hash={attachment.get('blurhash')}
+          dummy={!useBlurhash}
+          className={classNames('media-gallery__preview', {
+            'media-gallery__preview--hidden': visible && this.state.loaded,
+          })}
+        />
         {visible && thumbnail}
       </div>
     );

app/javascript/flavours/glitch/components/scrollable_list.js

@@ -10,10 +10,18 @@ import { List as ImmutableList } from 'immutable';
 import classNames from 'classnames';
 import { attachFullscreenListener, detachFullscreenListener, isFullscreen } from 'flavours/glitch/util/fullscreen';
 import LoadingIndicator from './loading_indicator';
+import { connect } from 'react-redux';
 
 const MOUSE_IDLE_DELAY = 300;
 
-export default class ScrollableList extends PureComponent {
+const mapStateToProps = (state, { scrollKey }) => {
+  return {
+    preventScroll: scrollKey === state.getIn(['dropdown_menu', 'scroll_key']),
+  };
+};
+
+export default @connect(mapStateToProps)
+class ScrollableList extends PureComponent {
 
   static contextTypes = {
     router: PropTypes.object,
@@ -37,6 +45,7 @@ export default class ScrollableList extends PureComponent {
     emptyMessage: PropTypes.node,
     children: PropTypes.node,
     bindToDocument: PropTypes.bool,
+    preventScroll: PropTypes.bool,
   };
 
   static defaultProps = {
@@ -124,7 +133,7 @@ export default class ScrollableList extends PureComponent {
   });
 
   handleMouseIdle = () => {
-    if (this.scrollToTopOnMouseIdle) {
+    if (this.scrollToTopOnMouseIdle && !this.props.preventScroll) {
       this.setScrollTop(0);
     }
     this.mouseMovedRecently = false;
@@ -176,7 +185,7 @@ export default class ScrollableList extends PureComponent {
       this.getFirstChildKey(prevProps) !== this.getFirstChildKey(this.props);
     const pendingChanged = (prevProps.numPending > 0) !== (this.props.numPending > 0);
 
-    if (pendingChanged || someItemInserted && (this.getScrollTop() > 0 || this.mouseMovedRecently)) {
+    if (pendingChanged || someItemInserted && (this.getScrollTop() > 0 || this.mouseMovedRecently || this.props.preventScroll)) {
       return this.getScrollHeight() - this.getScrollTop();
     } else {
       return null;

app/javascript/flavours/glitch/components/status.js

@@ -96,6 +96,7 @@ class Status extends ImmutablePureComponent {
     cacheMediaWidth: PropTypes.func,
     cachedMediaWidth: PropTypes.number,
     onClick: PropTypes.func,
+    scrollKey: PropTypes.string,
   };
 
   state = {

app/javascript/flavours/glitch/components/status_action_bar.js

@@ -74,6 +74,7 @@ class StatusActionBar extends ImmutablePureComponent {
     withDismiss: PropTypes.bool,
     showReplyCount: PropTypes.bool,
     directMessage: PropTypes.bool,
+    scrollKey: PropTypes.string,
     intl: PropTypes.object.isRequired,
   };
 
@@ -198,7 +199,7 @@ class StatusActionBar extends ImmutablePureComponent {
   }
 
   render () {
-    const { status, intl, withDismiss, showReplyCount, directMessage } = this.props;
+    const { status, intl, withDismiss, showReplyCount, directMessage, scrollKey } = this.props;
 
     const mutingConversation = status.get('muted');
     const anonymousAccess    = !me;
@@ -300,7 +301,16 @@ class StatusActionBar extends ImmutablePureComponent {
           <IconButton key='bookmark-button' className='status__action-bar-button bookmark-icon' disabled={anonymousAccess} active={status.get('bookmarked')} pressed={status.get('bookmarked')} title={intl.formatMessage(messages.bookmark)} icon='bookmark' onClick={this.handleBookmarkClick} />,
           filterButton,
           <div key='dropdown-button' className='status__action-bar-dropdown'>
-            <DropdownMenuContainer disabled={anonymousAccess} status={status} items={menu} icon='ellipsis-h' size={18} direction='right' ariaLabel={intl.formatMessage(messages.more)} />
+            <DropdownMenuContainer
+              scrollKey={scrollKey}
+              disabled={anonymousAccess}
+              status={status}
+              items={menu}
+              icon='ellipsis-h'
+              size={18}
+              direction='right'
+              ariaLabel={intl.formatMessage(messages.more)}
+            />
           </div>,
         ]}
 

app/javascript/flavours/glitch/components/status_list.js

@@ -99,6 +99,7 @@ export default class StatusList extends ImmutablePureComponent {
           onMoveUp={this.handleMoveUp}
           onMoveDown={this.handleMoveDown}
           contextType={timelineId}
+          scrollKey={this.props.scrollKey}
         />
       ))
     ) : null;
@@ -112,6 +113,7 @@ export default class StatusList extends ImmutablePureComponent {
           onMoveUp={this.handleMoveUp}
           onMoveDown={this.handleMoveDown}
           contextType={timelineId}
+          scrollKey={this.props.scrollKey}
         />
       )).concat(scrollableContent);
     }

app/javascript/flavours/glitch/containers/dropdown_menu_container.js

@@ -11,7 +11,7 @@ const mapStateToProps = state => ({
   openedViaKeyboard: state.getIn(['dropdown_menu', 'keyboard']),
 });
 
-const mapDispatchToProps = (dispatch, { status, items }) => ({
+const mapDispatchToProps = (dispatch, { status, items, scrollKey }) => ({
   onOpen(id, onItemClick, dropdownPlacement, keyboard) {
     dispatch(isUserTouching() ? openModal('ACTIONS', {
       status,
@@ -22,7 +22,7 @@ const mapDispatchToProps = (dispatch, { status, items }) => ({
           onClick: item.action ? ((e) => { return onItemClick(i, e) }) : null,
         } : null
       ),
-    }) : openDropdownMenu(id, dropdownPlacement, keyboard));
+    }) : openDropdownMenu(id, dropdownPlacement, keyboard, scrollKey));
   },
   onClose(id) {
     dispatch(closeModal('ACTIONS'));

app/javascript/flavours/glitch/features/account_gallery/components/media_item.js

@@ -1,7 +1,7 @@
-import { decode } from 'blurhash';
+import Blurhash from 'flavours/glitch/components/blurhash';
 import classNames from 'classnames';
 import Icon from 'flavours/glitch/components/icon';
-import { autoPlayGif, displayMedia } from 'flavours/glitch/util/initial_state';
+import { autoPlayGif, displayMedia, useBlurhash } from 'flavours/glitch/util/initial_state';
 import { isIOS } from 'flavours/glitch/util/is_mobile';
 import PropTypes from 'prop-types';
 import React from 'react';
@@ -21,34 +21,6 @@ export default class MediaItem extends ImmutablePureComponent {
     loaded: false,
   };
 
-  componentDidMount () {
-    if (this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  componentDidUpdate (prevProps) {
-    if (prevProps.attachment.get('blurhash') !== this.props.attachment.get('blurhash') && this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  _decode () {
-    const hash   = this.props.attachment.get('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);
-    }
-  }
-
-  setCanvasRef = c => {
-    this.canvas = c;
-  }
-
   handleImageLoad = () => {
     this.setState({ loaded: true });
   }
@@ -149,7 +121,13 @@ export default class MediaItem extends ImmutablePureComponent {
     return (
       <div className='account-gallery__item' style={{ width, height }}>
         <a className='media-gallery__item-thumbnail' href={status.get('url')} onClick={this.handleClick} title={title} target='_blank' rel='noopener noreferrer'>
-          <canvas width={32} height={32} ref={this.setCanvasRef} className={classNames('media-gallery__preview', { 'media-gallery__preview--hidden': visible && loaded })} />
+          <Blurhash
+            hash={attachment.get('blurhash')}
+            className={classNames('media-gallery__preview', {
+              'media-gallery__preview--hidden': visible && loaded,
+            })}
+            dummy={!useBlurhash}
+          />
           {visible ? thumbnail : icon}
         </a>
       </div>

app/javascript/flavours/glitch/features/audio/index.js

@@ -7,11 +7,7 @@ import classNames from 'classnames';
 import { throttle } from 'lodash';
 import { getPointerPosition, fileNameFromURL } from 'flavours/glitch/features/video';
 import { debounce } from 'lodash';
-
-const hex2rgba = (hex, alpha = 1) => {
-  const [r, g, b] = hex.match(/\w\w/g).map(x => parseInt(x, 16));
-  return `rgba(${r}, ${g}, ${b}, ${alpha})`;
-};
+import Visualizer from './visualizer';
 
 const messages = defineMessages({
   play: { id: 'video.play', defaultMessage: 'Play' },
@@ -54,6 +50,11 @@ class Audio extends React.PureComponent {
     dragging: false,
   };
 
+  constructor (props) {
+    super(props);
+    this.visualizer = new Visualizer(TICK_SIZE);
+  }
+
   setPlayerRef = c => {
     this.player = c;
 
@@ -92,9 +93,7 @@ class Audio extends React.PureComponent {
   setCanvasRef = c => {
     this.canvas = c;
 
-    if (c) {
-      this.canvasContext = c.getContext('2d');
-    }
+    this.visualizer.setCanvas(c);
   }
  
   componentDidMount () {
@@ -247,17 +246,12 @@ class Audio extends React.PureComponent {
 
   _initAudioContext () {
     const context  = new AudioContext();
-    const analyser = context.createAnalyser();
     const source   = context.createMediaElementSource(this.audio);
 
-    analyser.smoothingTimeConstant = 0.6;
-    analyser.fftSize = 2048;
-
-    source.connect(analyser);
+    this.visualizer.setAudioContext(context, source);
     source.connect(context.destination);
 
     this.audioContext = context;
-    this.analyser = analyser;
   }
 
   handleDownload = () => {
@@ -291,19 +285,11 @@ class Audio extends React.PureComponent {
   }
 
   _clear() {
-    this.canvasContext.clearRect(0, 0, this.state.width, this.state.height);
+    this.visualizer.clear(this.state.width, this.state.height);
   }
 
   _draw() {
-    this.canvasContext.save();
-
-    const ticks = this._getTicks(360 * this._getScaleCoefficient(), TICK_SIZE);
-
-    ticks.forEach(tick => {
-      this._drawTick(tick.x1, tick.y1, tick.x2, tick.y2);
-    });
-
-    this.canvasContext.restore();
+    this.visualizer.draw(this._getCX(), this._getCY(), this._getAccentColor(), this._getRadius(), this._getScaleCoefficient());
   }
 
   _getRadius () {
@@ -314,126 +300,6 @@ class Audio extends React.PureComponent {
     return (this.state.height || this.props.height) / 982;
   }
 
-  _getTicks (count, size, animationParams = [0, 90]) {
-    const radius = this._getRadius();
-    const ticks = this._getTickPoints(count);
-    const lesser = 200;
-    const m = [];
-    const bufferLength = this.analyser ? this.analyser.frequencyBinCount : 0;
-    const frequencyData = new Uint8Array(bufferLength);
-    const allScales = [];
-    const scaleCoefficient = this._getScaleCoefficient();
-
-    if (this.analyser) {
-      this.analyser.getByteFrequencyData(frequencyData);
-    }
-
-    ticks.forEach((tick, i) => {
-      const coef = 1 - i / (ticks.length * 2.5);
-
-      let delta = ((frequencyData[i] || 0) - lesser * coef) * scaleCoefficient;
-
-      if (delta < 0) {
-        delta = 0;
-      }
-
-      let k;
-
-      if (animationParams[0] <= tick.angle && tick.angle <= animationParams[1]) {
-        k = radius / (radius - this._getSize(tick.angle, animationParams[0], animationParams[1]) - delta);
-      } else {
-        k = radius / (radius - (size + delta));
-      }
-
-      const x1 = tick.x * (radius - size);
-      const y1 = tick.y * (radius - size);
-      const x2 = x1 * k;
-      const y2 = y1 * k;
-
-      m.push({ x1, y1, x2, y2 });
-
-      if (i < 20) {
-        let scale = delta / (200 * scaleCoefficient);
-        scale = scale < 1 ? 1 : scale;
-        allScales.push(scale);
-      }
-    });
-
-    const scale = allScales.reduce((pv, cv) => pv + cv, 0) / allScales.length;
-
-    return m.map(({ x1, y1, x2, y2 }) => ({
-      x1: x1,
-      y1: y1,
-      x2: x2 * scale,
-      y2: y2 * scale,
-    }));
-  }
-
-  _getSize (angle, l, r) {
-    const scaleCoefficient = this._getScaleCoefficient();
-    const maxTickSize = TICK_SIZE * 9 * scaleCoefficient;
-    const m = (r - l) / 2;
-    const x = (angle - l);
-
-    let h;
-
-    if (x === m) {
-      return maxTickSize;
-    }
-
-    const d = Math.abs(m - x);
-    const v = 40 * Math.sqrt(1 / d);
-
-    if (v > maxTickSize) {
-      h = maxTickSize;
-    } else {
-      h = Math.max(TICK_SIZE, v);
-    }
-
-    return h;
-  }
-
-  _getTickPoints (count) {
-    const PI = 360;
-    const coords = [];
-    const step = PI / count;
-
-    let rad;
-
-    for(let deg = 0; deg < PI; deg += step) {
-      rad = deg * Math.PI / (PI / 2);
-      coords.push({ x: Math.cos(rad), y: -Math.sin(rad), angle: deg });
-    }
-
-    return coords;
-  }
-
-  _drawTick (x1, y1, x2, y2) {
-    const cx = this._getCX();
-    const cy = this._getCY();
-
-    const dx1 = Math.ceil(cx + x1);
-    const dy1 = Math.ceil(cy + y1);
-    const dx2 = Math.ceil(cx + x2);
-    const dy2 = Math.ceil(cy + y2);
-
-    const gradient = this.canvasContext.createLinearGradient(dx1, dy1, dx2, dy2);
-
-    const mainColor = this._getAccentColor();
-    const lastColor = hex2rgba(mainColor, 0);
-
-    gradient.addColorStop(0, mainColor);
-    gradient.addColorStop(0.6, mainColor);
-    gradient.addColorStop(1, lastColor);
-
-    this.canvasContext.beginPath();
-    this.canvasContext.strokeStyle = gradient;
-    this.canvasContext.lineWidth = 2;
-    this.canvasContext.moveTo(dx1, dy1);
-    this.canvasContext.lineTo(dx2, dy2);
-    this.canvasContext.stroke();
-  }
-
   _getCX() {
     return Math.floor(this.state.width / 2);
   }

app/javascript/flavours/glitch/features/audio/visualizer.js

@@ -0,0 +1,136 @@
+/*
+Copyright (c) 2020 by Alex Permyakov (https://codepen.io/alexdevp/pen/RNELPV)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+const hex2rgba = (hex, alpha = 1) => {
+  const [r, g, b] = hex.match(/\w\w/g).map(x => parseInt(x, 16));
+  return `rgba(${r}, ${g}, ${b}, ${alpha})`;
+};
+
+export default class Visualizer {
+
+  constructor (tickSize) {
+    this.tickSize = tickSize;
+  }
+
+  setCanvas(canvas) {
+    this.canvas = canvas;
+    if (canvas) {
+      this.context = canvas.getContext('2d');
+    }
+  }
+
+  setAudioContext(context, source) {
+    const analyser = context.createAnalyser();
+
+    analyser.smoothingTimeConstant = 0.6;
+    analyser.fftSize = 2048;
+
+    source.connect(analyser);
+
+    this.analyser = analyser;
+  }
+
+  getTickPoints (count) {
+    const coords = [];
+
+    for(let i = 0; i < count; i++) {
+      const rad = Math.PI * 2 * i / count;
+      coords.push({ x: Math.cos(rad), y: -Math.sin(rad) });
+    }
+
+    return coords;
+  }
+
+  drawTick (cx, cy, mainColor, x1, y1, x2, y2) {
+    const dx1 = Math.ceil(cx + x1);
+    const dy1 = Math.ceil(cy + y1);
+    const dx2 = Math.ceil(cx + x2);
+    const dy2 = Math.ceil(cy + y2);
+
+    const gradient = this.context.createLinearGradient(dx1, dy1, dx2, dy2);
+
+    const lastColor = hex2rgba(mainColor, 0);
+
+    gradient.addColorStop(0, mainColor);
+    gradient.addColorStop(0.6, mainColor);
+    gradient.addColorStop(1, lastColor);
+
+    this.context.beginPath();
+    this.context.strokeStyle = gradient;
+    this.context.lineWidth = 2;
+    this.context.moveTo(dx1, dy1);
+    this.context.lineTo(dx2, dy2);
+    this.context.stroke();
+  }
+
+  getTicks (count, size, radius, scaleCoefficient) {
+    const ticks = this.getTickPoints(count);
+    const lesser = 200;
+    const m = [];
+    const bufferLength = this.analyser ? this.analyser.frequencyBinCount : 0;
+    const frequencyData = new Uint8Array(bufferLength);
+    const allScales = [];
+
+    if (this.analyser) {
+      this.analyser.getByteFrequencyData(frequencyData);
+    }
+
+    ticks.forEach((tick, i) => {
+      const coef = 1 - i / (ticks.length * 2.5);
+
+      let delta = ((frequencyData[i] || 0) - lesser * coef) * scaleCoefficient;
+
+      if (delta < 0) {
+        delta = 0;
+      }
+
+      const k = radius / (radius - (size + delta));
+
+      const x1 = tick.x * (radius - size);
+      const y1 = tick.y * (radius - size);
+      const x2 = x1 * k;
+      const y2 = y1 * k;
+
+      m.push({ x1, y1, x2, y2 });
+
+      if (i < 20) {
+        let scale = delta / (200 * scaleCoefficient);
+        scale = scale < 1 ? 1 : scale;
+        allScales.push(scale);
+      }
+    });
+
+    const scale = allScales.reduce((pv, cv) => pv + cv, 0) / allScales.length;
+
+    return m.map(({ x1, y1, x2, y2 }) => ({
+      x1: x1,
+      y1: y1,
+      x2: x2 * scale,
+      y2: y2 * scale,
+    }));
+  }
+
+  clear (width, height) {
+    this.context.clearRect(0, 0, width, height);
+  }
+
+  draw (cx, cy, color, radius, coefficient) {
+    this.context.save();
+
+    const ticks = this.getTicks(parseInt(360 * coefficient), this.tickSize, radius, coefficient);
+
+    ticks.forEach(tick => {
+      this.drawTick(cx, cy, color, tick.x1, tick.y1, tick.x2, tick.y2);
+    });
+
+    this.context.restore();
+  }
+
+}

app/javascript/flavours/glitch/features/direct_timeline/components/conversation.js

@@ -36,6 +36,7 @@ class Conversation extends ImmutablePureComponent {
     accounts: ImmutablePropTypes.list.isRequired,
     lastStatus: ImmutablePropTypes.map,
     unread:PropTypes.bool.isRequired,
+    scrollKey: PropTypes.string,
     onMoveUp: PropTypes.func,
     onMoveDown: PropTypes.func,
     markRead: PropTypes.func.isRequired,
@@ -156,7 +157,7 @@ class Conversation extends ImmutablePureComponent {
   }
 
   render () {
-    const { accounts, lastStatus, unread, intl } = this.props;
+    const { accounts, lastStatus, unread, scrollKey, intl } = this.props;
     const { isExpanded } = this.state;
 
     if (lastStatus === null) {
@@ -223,7 +224,15 @@ class Conversation extends ImmutablePureComponent {
               <IconButton className='status__action-bar-button' title={intl.formatMessage(messages.reply)} icon='reply' onClick={this.handleReply} />
 
               <div className='status__action-bar-dropdown'>
-                <DropdownMenuContainer status={lastStatus} items={menu} icon='ellipsis-h' size={18} direction='right' title={intl.formatMessage(messages.more)} />
+                <DropdownMenuContainer
+                  scrollKey={scrollKey}
+                  status={lastStatus}
+                  items={menu}
+                  icon='ellipsis-h'
+                  size={18}
+                  direction='right'
+                  title={intl.formatMessage(messages.more)}
+                />
               </div>
             </div>
           </div>

app/javascript/flavours/glitch/features/direct_timeline/components/conversations_list.js

@@ -10,6 +10,7 @@ export default class ConversationsList extends ImmutablePureComponent {
 
   static propTypes = {
     conversations: ImmutablePropTypes.list.isRequired,
+    scrollKey: PropTypes.string.isRequired,
     hasMore: PropTypes.bool,
     isLoading: PropTypes.bool,
     onLoadMore: PropTypes.func,
@@ -57,13 +58,14 @@ export default class ConversationsList extends ImmutablePureComponent {
     const { conversations, onLoadMore, ...other } = this.props;
 
     return (
-      <ScrollableList {...other} onLoadMore={onLoadMore && this.handleLoadOlder} scrollKey='direct' ref={this.setRef}>
+      <ScrollableList {...other} onLoadMore={onLoadMore && this.handleLoadOlder} ref={this.setRef}>
         {conversations.map(item => (
           <ConversationContainer
             key={item.get('id')}
             conversationId={item.get('id')}
             onMoveUp={this.handleMoveUp}
             onMoveDown={this.handleMoveDown}
+            scrollKey={this.props.scrollKey}
           />
         ))}
       </ScrollableList>

app/javascript/flavours/glitch/features/status/components/card.js

@@ -8,7 +8,7 @@ import classnames from 'classnames';
 import { decode as decodeIDNA } from 'flavours/glitch/util/idna';
 import Icon from 'flavours/glitch/components/icon';
 import { useBlurhash } from 'flavours/glitch/util/initial_state';
-import { decode } from 'blurhash';
+import Blurhash from 'flavours/glitch/components/blurhash';
 import { debounce } from 'lodash';
 
 const getHostname = url => {
@@ -85,38 +85,12 @@ export default class Card extends React.PureComponent {
 
   componentDidMount () {
     window.addEventListener('resize', this.handleResize, { passive: true });
-
-    if (this.props.card && this.props.card.get('blurhash') && this.canvas) {
-      this._decode();
-    }
   }
 
   componentWillUnmount () {
     window.removeEventListener('resize', this.handleResize);
   }
 
-  componentDidUpdate (prevProps) {
-    const { card } = this.props;
-
-    if (card.get('blurhash') && (!prevProps.card || prevProps.card.get('blurhash') !== card.get('blurhash')) && this.canvas) {
-      this._decode();
-    }
-  }
-
-  _decode () {
-    if (!useBlurhash) return;
-
-    const hash   = this.props.card.get('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);
-    }
-  }
-
   _setDimensions () {
     const width = this.node.offsetWidth;
 
@@ -174,10 +148,6 @@ export default class Card extends React.PureComponent {
     }
   }
 
-  setCanvasRef = c => {
-    this.canvas = c;
-  }
-
   handleImageLoad = () => {
     this.setState({ previewLoaded: true });
   }
@@ -230,7 +200,15 @@ export default class Card extends React.PureComponent {
     );
 
     let embed     = '';
-    let canvas = <canvas width={32} height={32} ref={this.setCanvasRef} className={classnames('status-card__image-preview', { 'status-card__image-preview--hidden' : revealed && this.state.previewLoaded })} />;
+    let canvas = (
+      <Blurhash
+        className={classnames('status-card__image-preview', {
+          'status-card__image-preview--hidden': revealed && this.state.previewLoaded,
+        })}
+        hash={card.get('blurhash')}
+        dummy={!useBlurhash}
+      />
+    );
     let thumbnail = <img src={card.get('image')} alt='' style={{ width: horizontal ? width : null, height: horizontal ? height : null, visibility: revealed ? null : 'hidden' }} onLoad={this.handleImageLoad} className='status-card__image-image' />;
     let spoilerButton = (
       <button type='button' onClick={this.handleReveal} className='spoiler-button__overlay'>

app/javascript/flavours/glitch/features/video/index.js

@@ -7,7 +7,7 @@ import classNames from 'classnames';
 import { isFullscreen, requestFullscreen, exitFullscreen } from 'flavours/glitch/util/fullscreen';
 import { displayMedia, useBlurhash } from 'flavours/glitch/util/initial_state';
 import Icon from 'flavours/glitch/components/icon';
-import { decode } from 'blurhash';
+import Blurhash from 'flavours/glitch/components/blurhash';
 
 const messages = defineMessages({
   play: { id: 'video.play', defaultMessage: 'Play' },
@@ -179,14 +179,6 @@ class Video extends React.PureComponent {
     this.volume = c;
   }
 
-  setCanvasRef = c => {
-    this.canvas = c;
-
-    if (c && this.props.blurhash) {
-      this._decode();
-    }
-  }
-
   handleMouseDownRoot = e => {
     e.preventDefault();
     e.stopPropagation();
@@ -305,10 +297,6 @@ class Video extends React.PureComponent {
     document.addEventListener('MSFullscreenChange', this.handleFullscreenChange, true);
 
     window.addEventListener('resize', this.handleResize, { passive: true });
-
-    if (this.props.blurhash) {
-      this._decode();
-    }
   }
 
   componentWillUnmount () {
@@ -330,23 +318,6 @@ class Video extends React.PureComponent {
     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);
-    }
   }
 
   handleResize = debounce(() => {
@@ -440,7 +411,7 @@ class Video extends React.PureComponent {
   }
 
   render () {
-    const { preview, src, inline, startTime, onOpenVideo, onCloseVideo, intl, alt, letterbox, fullwidth, detailed, sensitive, link, editable } = this.props;
+    const { preview, src, inline, startTime, onOpenVideo, onCloseVideo, intl, alt, letterbox, fullwidth, detailed, sensitive, link, editable, blurhash } = this.props;
     const { containerWidth, currentTime, duration, volume, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
     const progress = (currentTime / duration) * 100;
     const playerStyle = {};
@@ -485,7 +456,13 @@ class Video extends React.PureComponent {
         onMouseDown={this.handleMouseDownRoot}
         tabIndex={0}
       >
-        <canvas width={32} height={32} ref={this.setCanvasRef} className={classNames('media-gallery__preview', { 'media-gallery__preview--hidden': revealed })} />
+        <Blurhash
+          hash={blurhash}
+          className={classNames('media-gallery__preview', {
+            'media-gallery__preview--hidden': revealed,
+          })}
+          dummy={!useBlurhash}
+        />
 
         {(revealed || editable) && <video
           ref={this.setVideoRef}

app/javascript/flavours/glitch/reducers/dropdown_menu.js

@@ -4,14 +4,14 @@ import {
   DROPDOWN_MENU_CLOSE,
 } from '../actions/dropdown_menu';
 
-const initialState = Immutable.Map({ openId: null, placement: null, keyboard: false });
+const initialState = Immutable.Map({ openId: null, placement: null, keyboard: false, scroll_key: null });
 
 export default function dropdownMenu(state = initialState, action) {
   switch (action.type) {
   case DROPDOWN_MENU_OPEN:
-    return state.merge({ openId: action.id, placement: action.placement, keyboard: action.keyboard });
+    return state.merge({ openId: action.id, placement: action.placement, keyboard: action.keyboard, scroll_key: action.scroll_key });
   case DROPDOWN_MENU_CLOSE:
-    return state.get('openId') === action.id ? state.set('openId', null) : state;
+    return state.get('openId') === action.id ? state.set('openId', null).set('scroll_key', null) : state;
   default:
     return state;
   }

app/javascript/mastodon/actions/dropdown_menu.js

@@ -1,8 +1,8 @@
 export const DROPDOWN_MENU_OPEN = 'DROPDOWN_MENU_OPEN';
 export const DROPDOWN_MENU_CLOSE = 'DROPDOWN_MENU_CLOSE';
 
-export function openDropdownMenu(id, placement, keyboard) {
-  return { type: DROPDOWN_MENU_OPEN, id, placement, keyboard };
+export function openDropdownMenu(id, placement, keyboard, scroll_key) {
+  return { type: DROPDOWN_MENU_OPEN, id, placement, keyboard, scroll_key };
 }
 
 export function closeDropdownMenu(id) {

app/javascript/mastodon/components/blurhash.js

@@ -0,0 +1,65 @@
+// @ts-check
+
+import { decode } from 'blurhash';
+import React, { useRef, useEffect } from 'react';
+import PropTypes from 'prop-types';
+
+/**
+ * @typedef BlurhashPropsBase
+ * @property {string?} hash Hash to render
+ * @property {number} width
+ * Width of the blurred region in pixels. Defaults to 32
+ * @property {number} [height]
+ * Height of the blurred region in pixels. Defaults to width
+ * @property {boolean} [dummy]
+ * Whether dummy mode is enabled. If enabled, nothing is rendered
+ * and canvas left untouched
+ */
+
+/** @typedef {JSX.IntrinsicElements['canvas'] & BlurhashPropsBase} BlurhashProps */
+
+/**
+ * Component that is used to render blurred of blurhash string
+ *
+ * @param {BlurhashProps} param1 Props of the component
+ * @returns Canvas which will render blurred region element to embed
+ */
+function Blurhash({
+  hash,
+  width = 32,
+  height = width,
+  dummy = false,
+  ...canvasProps
+}) {
+  const canvasRef = /** @type {import('react').MutableRefObject<HTMLCanvasElement>} */ (useRef());
+
+  useEffect(() => {
+    const { current: canvas } = canvasRef;
+    canvas.width = canvas.width; // resets canvas
+
+    if (dummy || !hash) return;
+
+    try {
+      const pixels = decode(hash, width, height);
+      const ctx = canvas.getContext('2d');
+      const imageData = new ImageData(pixels, width, height);
+
+      ctx.putImageData(imageData, 0, 0);
+    } catch (err) {
+      console.error('Blurhash decoding failure', { err, hash });
+    }
+  }, [dummy, hash, width, height]);
+
+  return (
+    <canvas {...canvasProps} ref={canvasRef} width={width} height={height} />
+  );
+}
+
+Blurhash.propTypes = {
+  hash: PropTypes.string.isRequired,
+  width: PropTypes.number,
+  height: PropTypes.number,
+  dummy: PropTypes.bool,
+};
+
+export default React.memo(Blurhash);

app/javascript/mastodon/components/media_gallery.js

@@ -7,8 +7,8 @@ import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import { isIOS } from '../is_mobile';
 import classNames from 'classnames';
 import { autoPlayGif, cropImages, displayMedia, useBlurhash } from '../initial_state';
-import { decode } from 'blurhash';
 import { debounce } from 'lodash';
+import Blurhash from 'mastodon/components/blurhash';
 
 const messages = defineMessages({
   toggle_visible: { id: 'media_gallery.toggle_visible', defaultMessage: 'Hide {number, plural, one {image} other {images}}' },
@@ -74,36 +74,6 @@ class Item extends React.PureComponent {
     e.stopPropagation();
   }
 
-  componentDidMount () {
-    if (this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  componentDidUpdate (prevProps) {
-    if (prevProps.attachment.get('blurhash') !== this.props.attachment.get('blurhash') && this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  _decode () {
-    if (!useBlurhash) return;
-
-    const hash   = this.props.attachment.get('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);
-    }
-  }
-
-  setCanvasRef = c => {
-    this.canvas = c;
-  }
-
   handleImageLoad = () => {
     this.setState({ loaded: true });
   }
@@ -166,7 +136,11 @@ class Item extends React.PureComponent {
       return (
         <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
           <a className='media-gallery__item-thumbnail' href={attachment.get('remote_url') || attachment.get('url')} style={{ cursor: 'pointer' }} title={attachment.get('description')} target='_blank' rel='noopener noreferrer'>
-            <canvas width={32} height={32} ref={this.setCanvasRef} className='media-gallery__preview' />
+            <Blurhash
+              hash={attachment.get('blurhash')}
+              className='media-gallery__preview'
+              dummy={!useBlurhash}
+            />
           </a>
         </div>
       );
@@ -232,7 +206,13 @@ class Item extends React.PureComponent {
 
     return (
       <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
-        <canvas width={32} height={32} ref={this.setCanvasRef} className={classNames('media-gallery__preview', { 'media-gallery__preview--hidden': visible && this.state.loaded })} />
+        <Blurhash
+          hash={attachment.get('blurhash')}
+          dummy={!useBlurhash}
+          className={classNames('media-gallery__preview', {
+            'media-gallery__preview--hidden': visible && this.state.loaded,
+          })}
+        />
         {visible && thumbnail}
       </div>
     );

app/javascript/mastodon/components/scrollable_list.js

@@ -10,10 +10,18 @@ import { List as ImmutableList } from 'immutable';
 import classNames from 'classnames';
 import { attachFullscreenListener, detachFullscreenListener, isFullscreen } from '../features/ui/util/fullscreen';
 import LoadingIndicator from './loading_indicator';
+import { connect } from 'react-redux';
 
 const MOUSE_IDLE_DELAY = 300;
 
-export default class ScrollableList extends PureComponent {
+const mapStateToProps = (state, { scrollKey }) => {
+  return {
+    preventScroll: scrollKey === state.getIn(['dropdown_menu', 'scroll_key']),
+  };
+};
+
+export default @connect(mapStateToProps)
+class ScrollableList extends PureComponent {
 
   static contextTypes = {
     router: PropTypes.object,
@@ -37,6 +45,7 @@ export default class ScrollableList extends PureComponent {
     emptyMessage: PropTypes.node,
     children: PropTypes.node,
     bindToDocument: PropTypes.bool,
+    preventScroll: PropTypes.bool,
   };
 
   static defaultProps = {
@@ -129,7 +138,7 @@ export default class ScrollableList extends PureComponent {
   });
 
   handleMouseIdle = () => {
-    if (this.scrollToTopOnMouseIdle) {
+    if (this.scrollToTopOnMouseIdle && !this.props.preventScroll) {
       this.setScrollTop(0);
     }
 
@@ -179,7 +188,7 @@ export default class ScrollableList extends PureComponent {
       this.getFirstChildKey(prevProps) !== this.getFirstChildKey(this.props);
     const pendingChanged = (prevProps.numPending > 0) !== (this.props.numPending > 0);
 
-    if (pendingChanged || someItemInserted && (this.getScrollTop() > 0 || this.mouseMovedRecently)) {
+    if (pendingChanged || someItemInserted && (this.getScrollTop() > 0 || this.mouseMovedRecently || this.props.preventScroll)) {
       return this.getScrollHeight() - this.getScrollTop();
     } else {
       return null;

app/javascript/mastodon/components/status.js

@@ -94,6 +94,7 @@ class Status extends ImmutablePureComponent {
     updateScrollBottom: PropTypes.func,
     cacheMediaWidth: PropTypes.func,
     cachedMediaWidth: PropTypes.number,
+    scrollKey: PropTypes.string,
   };
 
   // Avoid checking props that are functions (and whose equality will always
@@ -264,7 +265,7 @@ class Status extends ImmutablePureComponent {
     let media = null;
     let statusAvatar, prepend, rebloggedByText;
 
-    const { intl, hidden, featured, otherAccounts, unread, showThread } = this.props;
+    const { intl, hidden, featured, otherAccounts, unread, showThread, scrollKey } = this.props;
 
     let { status, account, ...other } = this.props;
 
@@ -459,7 +460,7 @@ class Status extends ImmutablePureComponent {
 
             {media}
 
-            <StatusActionBar status={status} account={account} {...other} />
+            <StatusActionBar scrollKey={scrollKey} status={status} account={account} {...other} />
           </div>
         </div>
       </HotKeys>

app/javascript/mastodon/components/status_action_bar.js

@@ -85,6 +85,7 @@ class StatusActionBar extends ImmutablePureComponent {
     onPin: PropTypes.func,
     onBookmark: PropTypes.func,
     withDismiss: PropTypes.bool,
+    scrollKey: PropTypes.string,
     intl: PropTypes.object.isRequired,
   };
 
@@ -229,7 +230,7 @@ class StatusActionBar extends ImmutablePureComponent {
   }
 
   render () {
-    const { status, relationship, intl, withDismiss } = this.props;
+    const { status, relationship, intl, withDismiss, scrollKey } = this.props;
 
     const mutingConversation = status.get('muted');
     const anonymousAccess    = !me;
@@ -333,7 +334,16 @@ class StatusActionBar extends ImmutablePureComponent {
         {shareButton}
 
         <div className='status__action-bar-dropdown'>
-          <DropdownMenuContainer disabled={anonymousAccess} status={status} items={menu} icon='ellipsis-h' size={18} direction='right' title={intl.formatMessage(messages.more)} />
+          <DropdownMenuContainer
+            scrollKey={scrollKey}
+            disabled={anonymousAccess}
+            status={status}
+            items={menu}
+            icon='ellipsis-h'
+            size={18}
+            direction='right'
+            title={intl.formatMessage(messages.more)}
+          />
         </div>
       </div>
     );

app/javascript/mastodon/components/status_list.js

@@ -99,6 +99,7 @@ export default class StatusList extends ImmutablePureComponent {
           onMoveUp={this.handleMoveUp}
           onMoveDown={this.handleMoveDown}
           contextType={timelineId}
+          scrollKey={this.props.scrollKey}
           showThread
         />
       ))

app/javascript/mastodon/containers/dropdown_menu_container.js

@@ -12,7 +12,7 @@ const mapStateToProps = state => ({
   openedViaKeyboard: state.getIn(['dropdown_menu', 'keyboard']),
 });
 
-const mapDispatchToProps = (dispatch, { status, items }) => ({
+const mapDispatchToProps = (dispatch, { status, items, scrollKey }) => ({
   onOpen(id, onItemClick, dropdownPlacement, keyboard) {
     if (status) {
       dispatch(fetchRelationships([status.getIn(['account', 'id'])]));
@@ -22,7 +22,7 @@ const mapDispatchToProps = (dispatch, { status, items }) => ({
       status,
       actions: items,
       onClick: onItemClick,
-    }) : openDropdownMenu(id, dropdownPlacement, keyboard));
+    }) : openDropdownMenu(id, dropdownPlacement, keyboard, scrollKey));
   },
 
   onClose(id) {

app/javascript/mastodon/features/account/components/header.js

@@ -47,7 +47,6 @@ const messages = defineMessages({
   unendorse: { id: 'account.unendorse', defaultMessage: 'Don\'t feature on profile' },
   add_or_remove_from_list: { id: 'account.add_or_remove_from_list', defaultMessage: 'Add or Remove from lists' },
   admin_account: { id: 'status.admin_account', defaultMessage: 'Open moderation interface for @{name}' },
-  add_account_note: { id: 'account.add_account_note', defaultMessage: 'Add note for @{name}' },
 });
 
 const dateFormatOptions = {

app/javascript/mastodon/features/account_gallery/components/media_item.js

@@ -1,7 +1,7 @@
-import { decode } from 'blurhash';
+import Blurhash from 'mastodon/components/blurhash';
 import classNames from 'classnames';
 import Icon from 'mastodon/components/icon';
-import { autoPlayGif, displayMedia } from 'mastodon/initial_state';
+import { autoPlayGif, displayMedia, useBlurhash } from 'mastodon/initial_state';
 import { isIOS } from 'mastodon/is_mobile';
 import PropTypes from 'prop-types';
 import React from 'react';
@@ -21,34 +21,6 @@ export default class MediaItem extends ImmutablePureComponent {
     loaded: false,
   };
 
-  componentDidMount () {
-    if (this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  componentDidUpdate (prevProps) {
-    if (prevProps.attachment.get('blurhash') !== this.props.attachment.get('blurhash') && this.props.attachment.get('blurhash')) {
-      this._decode();
-    }
-  }
-
-  _decode () {
-    const hash   = this.props.attachment.get('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);
-    }
-  }
-
-  setCanvasRef = c => {
-    this.canvas = c;
-  }
-
   handleImageLoad = () => {
     this.setState({ loaded: true });
   }
@@ -152,7 +124,13 @@ export default class MediaItem extends ImmutablePureComponent {
     return (
       <div className='account-gallery__item' style={{ width, height }}>
         <a className='media-gallery__item-thumbnail' href={status.get('url')} onClick={this.handleClick} title={title} target='_blank' rel='noopener noreferrer'>
-          <canvas width={32} height={32} ref={this.setCanvasRef} className={classNames('media-gallery__preview', { 'media-gallery__preview--hidden': visible && loaded })} />
+          <Blurhash
+            hash={attachment.get('blurhash')}
+            className={classNames('media-gallery__preview', {
+              'media-gallery__preview--hidden': visible && loaded,
+            })}
+            dummy={!useBlurhash}
+          />
           {visible && thumbnail}
           {!visible && icon}
         </a>

app/javascript/mastodon/features/audio/index.js

@@ -7,11 +7,7 @@ import classNames from 'classnames';
 import { throttle } from 'lodash';
 import { getPointerPosition, fileNameFromURL } from 'mastodon/features/video';
 import { debounce } from 'lodash';
-
-const hex2rgba = (hex, alpha = 1) => {
-  const [r, g, b] = hex.match(/\w\w/g).map(x => parseInt(x, 16));
-  return `rgba(${r}, ${g}, ${b}, ${alpha})`;
-};
+import Visualizer from './visualizer';
 
 const messages = defineMessages({
   play: { id: 'video.play', defaultMessage: 'Play' },
@@ -54,6 +50,11 @@ class Audio extends React.PureComponent {
     dragging: false,
   };
 
+  constructor (props) {
+    super(props);
+    this.visualizer = new Visualizer(TICK_SIZE);
+  }
+
   setPlayerRef = c => {
     this.player = c;
 
@@ -92,9 +93,7 @@ class Audio extends React.PureComponent {
   setCanvasRef = c => {
     this.canvas = c;
 
-    if (c) {
-      this.canvasContext = c.getContext('2d');
-    }
+    this.visualizer.setCanvas(c);
   }
 
   componentDidMount () {
@@ -262,17 +261,12 @@ class Audio extends React.PureComponent {
 
   _initAudioContext () {
     const context  = new AudioContext();
-    const analyser = context.createAnalyser();
     const source   = context.createMediaElementSource(this.audio);
 
-    analyser.smoothingTimeConstant = 0.6;
-    analyser.fftSize = 2048;
-
-    source.connect(analyser);
+    this.visualizer.setAudioContext(context, source);
     source.connect(context.destination);
 
     this.audioContext = context;
-    this.analyser = analyser;
   }
 
   handleDownload = () => {
@@ -306,19 +300,11 @@ class Audio extends React.PureComponent {
   }
 
   _clear() {
-    this.canvasContext.clearRect(0, 0, this.state.width, this.state.height);
+    this.visualizer.clear(this.state.width, this.state.height);
   }
 
   _draw() {
-    this.canvasContext.save();
-
-    const ticks = this._getTicks(360 * this._getScaleCoefficient(), TICK_SIZE);
-
-    ticks.forEach(tick => {
-      this._drawTick(tick.x1, tick.y1, tick.x2, tick.y2);
-    });
-
-    this.canvasContext.restore();
+    this.visualizer.draw(this._getCX(), this._getCY(), this._getAccentColor(), this._getRadius(), this._getScaleCoefficient());
   }
 
   _getRadius () {
@@ -329,126 +315,6 @@ class Audio extends React.PureComponent {
     return (this.state.height || this.props.height) / 982;
   }
 
-  _getTicks (count, size, animationParams = [0, 90]) {
-    const radius = this._getRadius();
-    const ticks = this._getTickPoints(count);
-    const lesser = 200;
-    const m = [];
-    const bufferLength = this.analyser ? this.analyser.frequencyBinCount : 0;
-    const frequencyData = new Uint8Array(bufferLength);
-    const allScales = [];
-    const scaleCoefficient = this._getScaleCoefficient();
-
-    if (this.analyser) {
-      this.analyser.getByteFrequencyData(frequencyData);
-    }
-
-    ticks.forEach((tick, i) => {
-      const coef = 1 - i / (ticks.length * 2.5);
-
-      let delta = ((frequencyData[i] || 0) - lesser * coef) * scaleCoefficient;
-
-      if (delta < 0) {
-        delta = 0;
-      }
-
-      let k;
-
-      if (animationParams[0] <= tick.angle && tick.angle <= animationParams[1]) {
-        k = radius / (radius - this._getSize(tick.angle, animationParams[0], animationParams[1]) - delta);
-      } else {
-        k = radius / (radius - (size + delta));
-      }
-
-      const x1 = tick.x * (radius - size);
-      const y1 = tick.y * (radius - size);
-      const x2 = x1 * k;
-      const y2 = y1 * k;
-
-      m.push({ x1, y1, x2, y2 });
-
-      if (i < 20) {
-        let scale = delta / (200 * scaleCoefficient);
-        scale = scale < 1 ? 1 : scale;
-        allScales.push(scale);
-      }
-    });
-
-    const scale = allScales.reduce((pv, cv) => pv + cv, 0) / allScales.length;
-
-    return m.map(({ x1, y1, x2, y2 }) => ({
-      x1: x1,
-      y1: y1,
-      x2: x2 * scale,
-      y2: y2 * scale,
-    }));
-  }
-
-  _getSize (angle, l, r) {
-    const scaleCoefficient = this._getScaleCoefficient();
-    const maxTickSize = TICK_SIZE * 9 * scaleCoefficient;
-    const m = (r - l) / 2;
-    const x = (angle - l);
-
-    let h;
-
-    if (x === m) {
-      return maxTickSize;
-    }
-
-    const d = Math.abs(m - x);
-    const v = 40 * Math.sqrt(1 / d);
-
-    if (v > maxTickSize) {
-      h = maxTickSize;
-    } else {
-      h = Math.max(TICK_SIZE, v);
-    }
-
-    return h;
-  }
-
-  _getTickPoints (count) {
-    const PI = 360;
-    const coords = [];
-    const step = PI / count;
-
-    let rad;
-
-    for(let deg = 0; deg < PI; deg += step) {
-      rad = deg * Math.PI / (PI / 2);
-      coords.push({ x: Math.cos(rad), y: -Math.sin(rad), angle: deg });
-    }
-
-    return coords;
-  }
-
-  _drawTick (x1, y1, x2, y2) {
-    const cx = this._getCX();
-    const cy = this._getCY();
-
-    const dx1 = Math.ceil(cx + x1);
-    const dy1 = Math.ceil(cy + y1);
-    const dx2 = Math.ceil(cx + x2);
-    const dy2 = Math.ceil(cy + y2);
-
-    const gradient = this.canvasContext.createLinearGradient(dx1, dy1, dx2, dy2);
-
-    const mainColor = this._getAccentColor();
-    const lastColor = hex2rgba(mainColor, 0);
-
-    gradient.addColorStop(0, mainColor);
-    gradient.addColorStop(0.6, mainColor);
-    gradient.addColorStop(1, lastColor);
-
-    this.canvasContext.beginPath();
-    this.canvasContext.strokeStyle = gradient;
-    this.canvasContext.lineWidth = 2;
-    this.canvasContext.moveTo(dx1, dy1);
-    this.canvasContext.lineTo(dx2, dy2);
-    this.canvasContext.stroke();
-  }
-
   _getCX() {
     return Math.floor(this.state.width / 2);
   }

app/javascript/mastodon/features/audio/visualizer.js

@@ -0,0 +1,136 @@
+/*
+Copyright (c) 2020 by Alex Permyakov (https://codepen.io/alexdevp/pen/RNELPV)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+const hex2rgba = (hex, alpha = 1) => {
+  const [r, g, b] = hex.match(/\w\w/g).map(x => parseInt(x, 16));
+  return `rgba(${r}, ${g}, ${b}, ${alpha})`;
+};
+
+export default class Visualizer {
+
+  constructor (tickSize) {
+    this.tickSize = tickSize;
+  }
+
+  setCanvas(canvas) {
+    this.canvas = canvas;
+    if (canvas) {
+      this.context = canvas.getContext('2d');
+    }
+  }
+
+  setAudioContext(context, source) {
+    const analyser = context.createAnalyser();
+
+    analyser.smoothingTimeConstant = 0.6;
+    analyser.fftSize = 2048;
+
+    source.connect(analyser);
+
+    this.analyser = analyser;
+  }
+
+  getTickPoints (count) {
+    const coords = [];
+
+    for(let i = 0; i < count; i++) {
+      const rad = Math.PI * 2 * i / count;
+      coords.push({ x: Math.cos(rad), y: -Math.sin(rad) });
+    }
+
+    return coords;
+  }
+
+  drawTick (cx, cy, mainColor, x1, y1, x2, y2) {
+    const dx1 = Math.ceil(cx + x1);
+    const dy1 = Math.ceil(cy + y1);
+    const dx2 = Math.ceil(cx + x2);
+    const dy2 = Math.ceil(cy + y2);
+
+    const gradient = this.context.createLinearGradient(dx1, dy1, dx2, dy2);
+
+    const lastColor = hex2rgba(mainColor, 0);
+
+    gradient.addColorStop(0, mainColor);
+    gradient.addColorStop(0.6, mainColor);
+    gradient.addColorStop(1, lastColor);
+
+    this.context.beginPath();
+    this.context.strokeStyle = gradient;
+    this.context.lineWidth = 2;
+    this.context.moveTo(dx1, dy1);
+    this.context.lineTo(dx2, dy2);
+    this.context.stroke();
+  }
+
+  getTicks (count, size, radius, scaleCoefficient) {
+    const ticks = this.getTickPoints(count);
+    const lesser = 200;
+    const m = [];
+    const bufferLength = this.analyser ? this.analyser.frequencyBinCount : 0;
+    const frequencyData = new Uint8Array(bufferLength);
+    const allScales = [];
+
+    if (this.analyser) {
+      this.analyser.getByteFrequencyData(frequencyData);
+    }
+
+    ticks.forEach((tick, i) => {
+      const coef = 1 - i / (ticks.length * 2.5);
+
+      let delta = ((frequencyData[i] || 0) - lesser * coef) * scaleCoefficient;
+
+      if (delta < 0) {
+        delta = 0;
+      }
+
+      const k = radius / (radius - (size + delta));
+
+      const x1 = tick.x * (radius - size);
+      const y1 = tick.y * (radius - size);
+      const x2 = x1 * k;
+      const y2 = y1 * k;
+
+      m.push({ x1, y1, x2, y2 });
+
+      if (i < 20) {
+        let scale = delta / (200 * scaleCoefficient);
+        scale = scale < 1 ? 1 : scale;
+        allScales.push(scale);
+      }
+    });
+
+    const scale = allScales.reduce((pv, cv) => pv + cv, 0) / allScales.length;
+
+    return m.map(({ x1, y1, x2, y2 }) => ({
+      x1: x1,
+      y1: y1,
+      x2: x2 * scale,
+      y2: y2 * scale,
+    }));
+  }
+
+  clear (width, height) {
+    this.context.clearRect(0, 0, width, height);
+  }
+
+  draw (cx, cy, color, radius, coefficient) {
+    this.context.save();
+
+    const ticks = this.getTicks(parseInt(360 * coefficient), this.tickSize, radius, coefficient);
+
+    ticks.forEach(tick => {
+      this.drawTick(cx, cy, color, tick.x1, tick.y1, tick.x2, tick.y2);
+    });
+
+    this.context.restore();
+  }
+
+}

app/javascript/mastodon/features/direct_timeline/components/conversation.js

@@ -36,6 +36,7 @@ class Conversation extends ImmutablePureComponent {
     accounts: ImmutablePropTypes.list.isRequired,
     lastStatus: ImmutablePropTypes.map,
     unread:PropTypes.bool.isRequired,
+    scrollKey: PropTypes.string,
     onMoveUp: PropTypes.func,
     onMoveDown: PropTypes.func,
     markRead: PropTypes.func.isRequired,
@@ -127,7 +128,7 @@ class Conversation extends ImmutablePureComponent {
   }
 
   render () {
-    const { accounts, lastStatus, unread, intl } = this.props;
+    const { accounts, lastStatus, unread, scrollKey, intl } = this.props;
 
     if (lastStatus === null) {
       return null;
@@ -194,7 +195,15 @@ class Conversation extends ImmutablePureComponent {
               <IconButton className='status__action-bar-button' title={intl.formatMessage(messages.reply)} icon='reply' onClick={this.handleReply} />
 
               <div className='status__action-bar-dropdown'>
-                <DropdownMenuContainer status={lastStatus} items={menu} icon='ellipsis-h' size={18} direction='right' title={intl.formatMessage(messages.more)} />
+                <DropdownMenuContainer
+                  scrollKey={scrollKey}
+                  status={lastStatus}
+                  items={menu}
+                  icon='ellipsis-h'
+                  size={18}
+                  direction='right'
+                  title={intl.formatMessage(messages.more)}
+                />
               </div>
             </div>
           </div>

app/javascript/mastodon/features/direct_timeline/components/conversations_list.js

@@ -10,6 +10,7 @@ export default class ConversationsList extends ImmutablePureComponent {
 
   static propTypes = {
     conversations: ImmutablePropTypes.list.isRequired,
+    scrollKey: PropTypes.string.isRequired,
     hasMore: PropTypes.bool,
     isLoading: PropTypes.bool,
     onLoadMore: PropTypes.func,
@@ -58,13 +59,14 @@ export default class ConversationsList extends ImmutablePureComponent {
     const { conversations, onLoadMore, ...other } = this.props;
 
     return (
-      <ScrollableList {...other} onLoadMore={onLoadMore && this.handleLoadOlder} scrollKey='direct' ref={this.setRef}>
+      <ScrollableList {...other} onLoadMore={onLoadMore && this.handleLoadOlder} ref={this.setRef}>
         {conversations.map(item => (
           <ConversationContainer
             key={item.get('id')}
             conversationId={item.get('id')}
             onMoveUp={this.handleMoveUp}
             onMoveDown={this.handleMoveDown}
+            scrollKey={this.props.scrollKey}
           />
         ))}
       </ScrollableList>

app/javascript/mastodon/features/status/components/card.js

@@ -7,7 +7,7 @@ import punycode from 'punycode';
 import classnames from 'classnames';
 import Icon from 'mastodon/components/icon';
 import { useBlurhash } from 'mastodon/initial_state';
-import { decode } from 'blurhash';
+import Blurhash from 'mastodon/components/blurhash';
 import { debounce } from 'lodash';
 
 const IDNA_PREFIX = 'xn--';
@@ -93,38 +93,12 @@ export default class Card extends React.PureComponent {
 
   componentDidMount () {
     window.addEventListener('resize', this.handleResize, { passive: true });
-
-    if (this.props.card && this.props.card.get('blurhash') && this.canvas) {
-      this._decode();
-    }
   }
 
   componentWillUnmount () {
     window.removeEventListener('resize', this.handleResize);
   }
 
-  componentDidUpdate (prevProps) {
-    const { card } = this.props;
-
-    if (card.get('blurhash') && (!prevProps.card || prevProps.card.get('blurhash') !== card.get('blurhash')) && this.canvas) {
-      this._decode();
-    }
-  }
-
-  _decode () {
-    if (!useBlurhash) return;
-
-    const hash   = this.props.card.get('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);
-    }
-  }
-
   _setDimensions () {
     const width = this.node.offsetWidth;
 
@@ -182,10 +156,6 @@ export default class Card extends React.PureComponent {
     }
   }
 
-  setCanvasRef = c => {
-    this.canvas = c;
-  }
-
   handleImageLoad = () => {
     this.setState({ previewLoaded: true });
   }
@@ -238,7 +208,15 @@ export default class Card extends React.PureComponent {
     );
 
     let embed     = '';
-    let canvas = <canvas width={32} height={32} ref={this.setCanvasRef} className={classnames('status-card__image-preview', { 'status-card__image-preview--hidden' : revealed && this.state.previewLoaded })} />;
+    let canvas = (
+      <Blurhash
+        className={classnames('status-card__image-preview', {
+          'status-card__image-preview--hidden': revealed && this.state.previewLoaded,
+        })}
+        hash={card.get('blurhash')}
+        dummy={!useBlurhash}
+      />
+    );
     let thumbnail = <img src={card.get('image')} alt='' style={{ width: horizontal ? width : null, height: horizontal ? height : null, visibility: revealed ? null : 'hidden' }} onLoad={this.handleImageLoad} className='status-card__image-image' />;
     let spoilerButton = (
       <button type='button' onClick={this.handleReveal} className='spoiler-button__overlay'>

app/javascript/mastodon/features/video/index.js

@@ -7,7 +7,7 @@ import classNames from 'classnames';
 import { isFullscreen, requestFullscreen, exitFullscreen } from '../ui/util/fullscreen';
 import { displayMedia, useBlurhash } from '../../initial_state';
 import Icon from 'mastodon/components/icon';
-import { decode } from 'blurhash';
+import Blurhash from 'mastodon/components/blurhash';
 
 const messages = defineMessages({
   play: { id: 'video.play', defaultMessage: 'Play' },
@@ -169,10 +169,6 @@ class Video extends React.PureComponent {
     this.volume = c;
   }
 
-  setCanvasRef = c => {
-    this.canvas = c;
-  }
-
   handleClickRoot = e => e.stopPropagation();
 
   handlePlay = () => {
@@ -289,10 +285,6 @@ class Video extends React.PureComponent {
 
     window.addEventListener('scroll', this.handleScroll);
     window.addEventListener('resize', this.handleResize, { passive: true });
-
-    if (this.props.blurhash) {
-      this._decode();
-    }
   }
 
   componentWillUnmount () {
@@ -315,24 +307,6 @@ class Video extends React.PureComponent {
     if (prevState.revealed && !this.state.revealed && this.video) {
       this.video.pause();
     }
-
-    if (prevProps.blurhash !== this.props.blurhash && this.props.blurhash) {
-      this._decode();
-    }
-  }
-
-  _decode () {
-    if (!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);
-    }
   }
 
   handleResize = debounce(() => {
@@ -438,7 +412,7 @@ class Video extends React.PureComponent {
   }
 
   render () {
-    const { preview, src, inline, startTime, onOpenVideo, onCloseVideo, intl, alt, detailed, sensitive, link, editable } = this.props;
+    const { preview, src, inline, startTime, onOpenVideo, onCloseVideo, intl, alt, detailed, sensitive, link, editable, blurhash } = this.props;
     const { containerWidth, currentTime, duration, volume, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
     const progress = (currentTime / duration) * 100;
     const playerStyle = {};
@@ -481,7 +455,13 @@ class Video extends React.PureComponent {
         onClick={this.handleClickRoot}
         tabIndex={0}
       >
-        <canvas width={32} height={32} ref={this.setCanvasRef} className={classNames('media-gallery__preview', { 'media-gallery__preview--hidden': revealed })} />
+        <Blurhash
+          hash={blurhash}
+          className={classNames('media-gallery__preview', {
+            'media-gallery__preview--hidden': revealed,
+          })}
+          dummy={!useBlurhash}
+        />
 
         {(revealed || editable) && <video
           ref={this.setVideoRef}

app/javascript/mastodon/locales/defaultMessages.json

@@ -139,6 +139,23 @@
     ],
     "path": "app/javascript/mastodon/components/column_header.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "{count, plural, one {{counter} Toot} other {{counter} Toots}}",
+        "id": "account.statuses_counter"
+      },
+      {
+        "defaultMessage": "{count, plural, other {{counter} Following}}",
+        "id": "account.following_counter"
+      },
+      {
+        "defaultMessage": "{count, plural, one {{counter} Follower} other {{counter} Followers}}",
+        "id": "account.followers_counter"
+      }
+    ],
+    "path": "app/javascript/mastodon/components/common_counter.json"
+  },
   {
     "descriptors": [
       {
@@ -172,8 +189,8 @@
   {
     "descriptors": [
       {
-        "defaultMessage": "{count} {rawCount, plural, one {person} other {people}} talking",
-        "id": "trends.count_by_accounts"
+        "defaultMessage": "{count, plural, one {{counter} person} other {{counter} people}} talking",
+        "id": "trends.counter_by_accounts"
       }
     ],
     "path": "app/javascript/mastodon/components/hashtag.json"
@@ -340,6 +357,23 @@
     ],
     "path": "app/javascript/mastodon/components/relative_timestamp.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "{count}K",
+        "id": "units.short.thousand"
+      },
+      {
+        "defaultMessage": "{count}M",
+        "id": "units.short.million"
+      },
+      {
+        "defaultMessage": "{count}B",
+        "id": "units.short.billion"
+      }
+    ],
+    "path": "app/javascript/mastodon/components/short_number.json"
+  },
   {
     "descriptors": [
       {
@@ -833,18 +867,6 @@
       {
         "defaultMessage": "Group",
         "id": "account.badges.group"
-      },
-      {
-        "defaultMessage": "Toots",
-        "id": "account.posts"
-      },
-      {
-        "defaultMessage": "Follows",
-        "id": "account.follows"
-      },
-      {
-        "defaultMessage": "Followers",
-        "id": "account.followers"
       }
     ],
     "path": "app/javascript/mastodon/features/account/components/header.json"

app/javascript/mastodon/locales/en.json

@@ -15,7 +15,8 @@
   "account.follow": "Follow",
   "account.followers": "Followers",
   "account.followers.empty": "No one follows this user yet.",
-  "account.follows": "Follows",
+  "account.followers_counter": "{count, plural, one {{counter} Follower} other {{counter} Followers}}",
+  "account.following_counter": "{count, plural, other {{counter} Following}}",
   "account.follows.empty": "This user doesn't follow anyone yet.",
   "account.follows_you": "Follows you",
   "account.hide_reblogs": "Hide boosts from @{name}",
@@ -35,6 +36,7 @@
   "account.requested": "Awaiting approval. Click to cancel follow request",
   "account.share": "Share @{name}'s profile",
   "account.show_reblogs": "Show boosts from @{name}",
+  "account.statuses_counter": "{count, plural, one {{counter} Toot} other {{counter} Toots}}",
   "account.unblock": "Unblock @{name}",
   "account.unblock_domain": "Unblock domain {domain}",
   "account.unendorse": "Don't feature on profile",
@@ -426,9 +428,12 @@
   "timeline_hint.resources.followers": "Followers",
   "timeline_hint.resources.follows": "Follows",
   "timeline_hint.resources.statuses": "Older toots",
-  "trends.count_by_accounts": "{count} {rawCount, plural, one {person} other {people}} talking",
+  "trends.counter_by_accounts": "{count, plural, one {{counter} person} other {{counter} people}} talking",
   "trends.trending_now": "Trending now",
   "ui.beforeunload": "Your draft will be lost if you leave Mastodon.",
+  "units.short.billion": "{count}B",
+  "units.short.million": "{count}M",
+  "units.short.thousand": "{count}K",
   "upload_area.title": "Drag & drop to upload",
   "upload_button.label": "Add images, a video or an audio file",
   "upload_error.limit": "File upload limit exceeded.",

app/javascript/mastodon/reducers/dropdown_menu.js

@@ -4,14 +4,14 @@ import {
   DROPDOWN_MENU_CLOSE,
 } from '../actions/dropdown_menu';
 
-const initialState = Immutable.Map({ openId: null, placement: null, keyboard: false });
+const initialState = Immutable.Map({ openId: null, placement: null, keyboard: false, scroll_key: null });
 
 export default function dropdownMenu(state = initialState, action) {
   switch (action.type) {
   case DROPDOWN_MENU_OPEN:
-    return state.merge({ openId: action.id, placement: action.placement, keyboard: action.keyboard });
+    return state.merge({ openId: action.id, placement: action.placement, keyboard: action.keyboard, scroll_key: action.scroll_key });
   case DROPDOWN_MENU_CLOSE:
-    return state.get('openId') === action.id ? state.set('openId', null) : state;
+    return state.get('openId') === action.id ? state.set('openId', null).set('scroll_key', null) : state;
   default:
     return state;
   }

app/views/media/player.html.haml

@@ -3,7 +3,7 @@
   = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
 
 - if @media_attachment.video?
-  = react_component :video, src: @media_attachment.file.url(:original), preview: @media_attachment.file.url(:small), blurhash: @media_attachment.blurhash, width: 670, height: 380, editable: true, detailed: true, inline: true, alt: @media_attachment.description do
+  = react_component :video, src: @media_attachment.file.url(:original), preview: @media_attachment.thumbnail.present? ? @media_attachment.thumbnail.url : @media_attachment.file.url(:small), blurhash: @media_attachment.blurhash, width: 670, height: 380, editable: true, detailed: true, inline: true, alt: @media_attachment.description do
     %video{ controls: 'controls' }
       %source{ src: @media_attachment.file.url(:original) }
 - elsif @media_attachment.gifv?

app/views/statuses/_detailed_status.html.haml

@@ -29,7 +29,7 @@
   - if !status.media_attachments.empty?
     - if status.media_attachments.first.video?
       - video = status.media_attachments.first
-      = react_component :video, src: video.file.url(:original), preview: video.file.url(:small), blurhash: video.blurhash, sensitive: status.sensitive?, width: 670, height: 380, detailed: true, inline: true, alt: video.description do
+      = react_component :video, src: video.file.url(:original), preview: video.thumbnail.present? ? video.thumbnail.url : video.file.url(:small), blurhash: video.blurhash, sensitive: status.sensitive?, width: 670, height: 380, detailed: true, inline: true, alt: video.description do
         = render partial: 'statuses/attachment_list', locals: { attachments: status.media_attachments }
     - elsif status.media_attachments.first.audio?
       - audio = status.media_attachments.first

app/views/statuses/_simple_status.html.haml

@@ -35,7 +35,7 @@
   - if !status.media_attachments.empty?
     - if status.media_attachments.first.video?
       - video = status.media_attachments.first
-      = react_component :video, src: video.file.url(:original), preview: video.file.url(:small), blurhash: video.blurhash, sensitive: status.sensitive?, width: 610, height: 343, inline: true, alt: video.description do
+      = react_component :video, src: video.file.url(:original), preview: video.thumbnail.present? ? video.thumbnail.url : video.file.url(:small), blurhash: video.blurhash, sensitive: status.sensitive?, width: 610, height: 343, inline: true, alt: video.description do
         = render partial: 'statuses/attachment_list', locals: { attachments: status.media_attachments }
     - elsif status.media_attachments.first.audio?
       - audio = status.media_attachments.first