[Glitch] Play animated custom emoji on hover

Port 7de8c51873b51d8450f7a6597a43d454964d0407 to glitch-soc

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

@@ -2,6 +2,7 @@ import React from 'react';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
 import classNames from 'classnames';
+import { autoPlayGif } from 'flavours/glitch/util/initial_state';
 
 export default class DisplayName extends React.PureComponent {
 
@@ -14,6 +15,47 @@ export default class DisplayName extends React.PureComponent {
     handleClick: PropTypes.func,
   };
 
+  _updateEmojis () {
+    const node = this.node;
+
+    if (!node || autoPlayGif) {
+      return;
+    }
+
+    const emojis = node.querySelectorAll('.custom-emoji');
+
+    for (var i = 0; i < emojis.length; i++) {
+      let emoji = emojis[i];
+      if (emoji.classList.contains('status-emoji')) {
+        continue;
+      }
+      emoji.classList.add('status-emoji');
+
+      emoji.addEventListener('mouseenter', this.handleEmojiMouseEnter, false);
+      emoji.addEventListener('mouseleave', this.handleEmojiMouseLeave, false);
+    }
+  }
+
+  componentDidMount () {
+    this._updateEmojis();
+  }
+
+  componentDidUpdate () {
+    this._updateEmojis();
+  }
+
+  handleEmojiMouseEnter = ({ target }) => {
+    target.src = target.getAttribute('data-original');
+  }
+
+  handleEmojiMouseLeave = ({ target }) => {
+    target.src = target.getAttribute('data-static');
+  }
+
+  setRef = (c) => {
+    this.node = c;
+  }
+
   render() {
     const { account, className, inline, localDomain, others, onAccountClick } = this.props;
 
@@ -58,7 +100,7 @@ export default class DisplayName extends React.PureComponent {
     }
 
     return (
-      <span className={computedClass}>
+      <span className={computedClass} ref={this.setRef}>
         {displayName}
         {inline ? ' ' : null}
         {suffix}

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

@@ -5,6 +5,7 @@ import { isRtl } from 'flavours/glitch/util/rtl';
 import { FormattedMessage } from 'react-intl';
 import Permalink from './permalink';
 import classnames from 'classnames';
+import { autoPlayGif } from 'flavours/glitch/util/initial_state';
 
 export default class StatusContent extends React.PureComponent {
 
@@ -57,12 +58,35 @@ export default class StatusContent extends React.PureComponent {
     }
   }
 
+  _updateStatusEmojis () {
+    const node = this.node;
+
+    if (!node || autoPlayGif) {
+      return;
+    }
+
+    const emojis = node.querySelectorAll('.custom-emoji');
+
+    for (var i = 0; i < emojis.length; i++) {
+      let emoji = emojis[i];
+      if (emoji.classList.contains('status-emoji')) {
+        continue;
+      }
+      emoji.classList.add('status-emoji');
+
+      emoji.addEventListener('mouseenter', this.handleEmojiMouseEnter, false);
+      emoji.addEventListener('mouseleave', this.handleEmojiMouseLeave, false);
+    }
+  }
+
   componentDidMount () {
     this._updateStatusLinks();
+    this._updateStatusEmojis();
   }
 
   componentDidUpdate () {
     this._updateStatusLinks();
+    this._updateStatusEmojis();
     if (this.props.onUpdate) this.props.onUpdate();
   }
 
@@ -86,6 +110,14 @@ export default class StatusContent extends React.PureComponent {
     }
   }
 
+  handleEmojiMouseEnter = ({ target }) => {
+    target.src = target.getAttribute('data-original');
+  }
+
+  handleEmojiMouseLeave = ({ target }) => {
+    target.src = target.getAttribute('data-static');
+  }
+
   handleMouseDown = (e) => {
     this.startXY = [e.clientX, e.clientY];
   }

app/javascript/flavours/glitch/features/account/components/header.js

@@ -71,6 +71,47 @@ class Header extends ImmutablePureComponent {
     window.open('/settings/profile', '_blank');
   }
 
+  _updateEmojis () {
+    const node = this.node;
+
+    if (!node || autoPlayGif) {
+      return;
+    }
+
+    const emojis = node.querySelectorAll('.custom-emoji');
+
+    for (var i = 0; i < emojis.length; i++) {
+      let emoji = emojis[i];
+      if (emoji.classList.contains('status-emoji')) {
+        continue;
+      }
+      emoji.classList.add('status-emoji');
+
+      emoji.addEventListener('mouseenter', this.handleEmojiMouseEnter, false);
+      emoji.addEventListener('mouseleave', this.handleEmojiMouseLeave, false);
+    }
+  }
+
+  componentDidMount () {
+    this._updateEmojis();
+  }
+
+  componentDidUpdate () {
+    this._updateEmojis();
+  }
+
+  handleEmojiMouseEnter = ({ target }) => {
+    target.src = target.getAttribute('data-original');
+  }
+
+  handleEmojiMouseLeave = ({ target }) => {
+    target.src = target.getAttribute('data-static');
+  }
+
+  setRef = (c) => {
+    this.node = c;
+  }
+
   render () {
     const { account, intl, domain, identity_proofs } = this.props;
 
@@ -193,7 +234,7 @@ class Header extends ImmutablePureComponent {
     const acct            = account.get('acct').indexOf('@') === -1 && domain ? `${account.get('acct')}@${domain}` : account.get('acct');
 
     return (
-      <div className={classNames('account__header', { inactive: !!account.get('moved') })}>
+      <div className={classNames('account__header', { inactive: !!account.get('moved') })} ref={this.setRef}>
         <div className='account__header__image'>
           <div className='account__header__info'>
             {info}

app/javascript/flavours/glitch/packs/public.js

@@ -4,6 +4,7 @@ import ready from 'flavours/glitch/util/ready';
 function main() {
   const IntlMessageFormat = require('intl-messageformat').default;
   const { timeAgoString } = require('flavours/glitch/components/relative_timestamp');
+  const { delegate } = require('rails-ujs');
   const emojify = require('flavours/glitch/util/emoji').default;
   const { getLocale } = require('locales');
   const { messages } = getLocale();
@@ -23,6 +24,12 @@ function main() {
     }
   };
 
+  const getEmojiAnimationHandler = (swapTo) => {
+    return ({ target }) => {
+      target.src = target.getAttribute(swapTo);
+    };
+  };
+
   ready(() => {
     const locale = document.documentElement.lang;
 
@@ -94,6 +101,9 @@ function main() {
       document.head.appendChild(scrollbarWidthStyle);
       scrollbarWidthStyle.sheet.insertRule(`body.with-modals--active { margin-right: ${scrollbarWidth}px; }`, 0);
     }
+
+    delegate(document, '.custom-emoji', 'mouseover', getEmojiAnimationHandler('data-original'));
+    delegate(document, '.custom-emoji', 'mouseout', getEmojiAnimationHandler('data-static'));
   });
 }
 

app/javascript/flavours/glitch/util/emoji/index.js

@@ -29,7 +29,7 @@ const emojify = (str, customEmojis = {}) => {
         // if you want additional emoji handler, add statements below which set replacement and return true.
         if (shortname in customEmojis) {
           const filename = autoPlayGif ? customEmojis[shortname].url : customEmojis[shortname].static_url;
-          replacement = `<img draggable="false" class="emojione" alt="${shortname}" title="${shortname}" src="${filename}" />`;
+          replacement = `<img draggable="false" class="emojione custom-emoji" alt="${shortname}" title="${shortname}" src="${filename}" data-original="${customEmojis[shortname].url}" data-static="${customEmojis[shortname].static_url}" />`;
           return true;
         }
         return false;