tools/chat-overlay.html

---
layout: blank
title: OBS YouTube Chat Overlay
---

<html style="font-size: 10px;font-family: Roboto, Arial, sans-serif;">
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
  <meta content="utf-8" http-equiv="encoding" />
  <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon" />
  <title>Overlay Window</title>
  <meta name="title" content="YouTube Chat Overlay" />
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/textfit/2.4.0/textFit.min.js" integrity="sha512-vLs5rAqfvmv/IpN7JustROkGAvjK/L+vgVDFe7KpdtLztqF8mZDfleK2MZj/xuOrWjma0pW+lPCMcBbPKJVC7g==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
  <style>
:root {
  /* basic colors */
  --keyer-bg-color: #000; /* change for a chroma key if you want, beware profile avatars may key out */
  --comment-color: #fff;
  --comment-bg-color: #222; /* needs to be slightly above black to not get keyed out */
  --comment-border-radius: 0px;
  --comment-font-size: 40px;
  --author-color: #222;
  --author-bg-color: #ffa500;
  --author-avatar-border-color: #ffa500;
  --author-border-radius: 0px;
  --author-avatar-border-size: 3px;
  --author-avatar-size: 128px;
  --author-font-size: 30px;

  /* donation/superchat specific */
  --donation-color: #5a4211;
  --donation-bg-color: #fff;
  --donation-gradient-stop0: #BF953F;
  --donation-gradient-stop1: #ede599;
  --donation-gradient-stop2: #B38728;
  --donation-label-color: #fff;
  --donation-label-text: 'SUPERCHAT';
  --donation-shadow-color: #fff;

  --shown-comment-bg-color: #555555;
  --highlighted-comment-bg-color: #f0f07d;

  /*
  LAYOUT
  */
  --comment-width: auto; /* go 100% for a full screen lower third style*/
  --comment-padding: 20px 40px 20px 140px;
  --comment-area-height: 30vh;
  --comment-scale: 1;
  --comment-area-size-offset: 0;
  --comment-area-bottom: 10px;
  /*
  STYLE
  */
  --font-family: Avenir Next, Helvetica, Geneva, Verdana, Arial, sans-serif;
  --highlight-chat-font-weight: 600;
  --author-font-weight: 700;
  --comment-font-weight: 600;
}

/****** SPIEGLIO OVERRIDES BEGIN */
:root {
  /* basic colors */
  --keyer-bg-color: #000; /* change for a chroma key if you want, beware profile avatars may key out */
  --comment-color: #fff;
  --comment-bg-color: #222830; /* needs to be slightly above black to not get keyed out */
  --comment-border-radius: 0px;
  --comment-font-size: 40px;
  --author-color: #ffffff;
  --author-bg-color: #cc5630;
  --author-avatar-border-color: #cc5630;
  --author-border-radius: 0px;
  --author-avatar-border-size: 3px;
  --author-avatar-size: 128px;
  --author-font-size: 30px;

  /* donation/superchat specific */
  --donation-color: #5a4211;
  --donation-bg-color: #fff;
  --donation-gradient-stop0: #BF953F;
  --donation-gradient-stop1: #ede599;
  --donation-gradient-stop2: #B38728;
  --donation-label-color: #fff;
  --donation-label-text: 'SUPERCHAT';
  --donation-shadow-color: #fff;

  --shown-comment-bg-color: #555555;
  --highlighted-comment-bg-color: #f0f07d;

  /* LAYOUT */
  --comment-width: auto; /* go 100% for a full screen lower third style*/
  --comment-text-max-height:  120px;
  --comment-padding: 25px 20px 10px 130px;
  --comment-area-height: 30vh;
  --comment-scale: 1;
  --comment-area-size-offset: 0;
  --comment-area-bottom: 10px;

  /* STYLE */
  --font-family: Avenir Next, Helvetica, Geneva, Verdana, Arial, sans-serif;
  --highlight-chat-font-weight: 600;
  --author-font-weight: 700;
  --comment-font-weight: 600;
}
/****** SPIEGLIO OVERRIDES END */

body {
  background-color: #0000;
  position: relative;
  left: 0px;
  background-color: rgba(0, 0, 0, 0);
  margin: 0px auto;
  overflow: hidden;
}

#output {
  transform: translateY(30px);
  transform: translatex(10px);
  margin: 0 0 0 8px;
  transition: .5s all cubic-bezier(0.250, 0.250, 0.105, 1.2);
}

.fadeout {
  animation: fadeout .5s;
  opacity: 0 !important;
}
.fadein {
  animation: fadein .5s;
  opacity: 1 !important;
}

@keyframes fadein {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeout {
  from { opacity: 1; }
  to   { opacity: 0; }
}

.slidedown {
  transform: translateY(340px) !important;
}
.slideup {
  transform: translateY(0px) !important;
}

.slideoutleft {
  transform: translatex(-100vw) !important;
}
.slideinleft {
  transform: translatex(10px) !important;
}

yt-live-chat-app {
    margin-bottom: var(--comment-area-height);
    height: calc(100vh - var(--comment-area-height)) !important;
}
.btn-clear {
    position: absolute;
    z-index: 99999;
    bottom: calc(var(--comment-area-height) + 60px);
    right: 20px;
    font-size: 30px;
    border: 1px #bbb solid;
    border-radius: 4px;
    color: #fff;
    background: #444;
}
.highlighted-comment {
    background-color: var(--highlighted-comment-bg-color) !important;
}
html[dark] .highlighted-comment #message.yt-live-chat-text-message-renderer {
    color: black;
}
html[dark] .highlighted-comment:hover #message.yt-live-chat-text-message-renderer {
    color: white;
}
html[dark] .highlighted-comment #author-name.yt-live-chat-author-chip {
    color: #444;
}
html[dark] .highlighted-comment:hover #author-name.yt-live-chat-author-chip {
    color: #DDD;
}
yt-live-chat-text-message-renderer:hover {
    background-color: #eee !important;
}
html[dark] yt-live-chat-text-message-renderer:hover {
    background-color: #444 !important;
}
yt-live-chat-text-message-renderer.shown-comment {
    background-color: var(--shown-comment-bg-color) !important;
    opacity: 0.4;
}
.shown-comment:hover {
    opacity: 0.5;
}
.highlight-chat {
    font-family: var(--font-family);
    font-weight: var(--highlight-chat-font-weight);
    box-sizing: border-box;
    font-size: 30px;
}
.highlight-chat.preview {
    border: 1px #ccc solid;
}
.hl-c-cont {
    position: relative;
    padding: 20px;
    width: 100%;
    margin: 0 auto;
    transition: .5s all cubic-bezier(0.250, 0.250, 0.105, 1.2);
}

.hl-name {
    position: absolute;
    top: -10px;
    left: 115px;
    max-width:  300px;
    height:  auto;
    white-space: nowrap;
    font-weight: var(--author-font-weight);
    background: var(--author-bg-color);
    color: var(--author-color);
    padding: 5px 10px;
    transform: rotate(-0deg);
    z-index: 1;
    border-radius: var(--author-border-radius);
    font-size: var(--author-font-size);
}
.hl-message {
    position: absolute;
    width: var(--comment-width);
    max-height:  var(--comment-text-max-height);
    font-weight: var(--comment-font-weight);
    padding: var(--comment-padding);
    color: var(--comment-color);
    background-color: var(--comment-bg-color);
    border-radius: var(--comment-border-radius);
    font-size: var(--comment-font-size);
}
.hl-message img {
    width: 50px;
    vertical-align: middle;
}
.hl-message a {
    color: white;
}
.hl-img {
    position: absolute;
    top: 0;
    z-index: 1;
    left: 0px;
    width: var(--author-avatar-size);
    height: var(--author-avatar-size);
    background-color: var(--author-avatar-border-color);
    border-radius: 50%;
    border: 0;
    padding: var(--author-avatar-border-size);
}
.hl-img img {
    display: block;
    width: 100%;
    border-radius: 50%;
    z-index: 1;
}
/* overlay a very faint white layer to bump the blacks above the luma key cutoff */
.hl-img:after {
    content: '';
    display: block;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
    border-radius: 50%;
    position:absolute;
    pointer-events: none;
    z-index: 3;
}
.hl-img::after {
    background: rgba(255,255,255,.04);
    mix-blend-mode: lighten;
}

.hl-badges {
  display: inline-block;
  margin-left: 5px;
}
.hl-badges img.yt-live-chat-author-badge-renderer {
  width: 24px;
  height: 24px;
}

.donation {
    position: absolute;
    display: block;
    text-align: center;
    left: 70px;
    top: 108px;
    z-index: 3;
    min-width: 128px;
    border-radius: 10px;
    padding: 30px 5px 0;
    overflow: hidden;
    background: linear-gradient(to right, var(--donation-gradient-stop0), var(--donation-gradient-stop1), var(--donation-gradient-stop2));
    color: var(--donation-color);
    transform: rotate(-5deg) translateX(-50%);
}
.membership {
    padding: 10px 10px 5px 10px;
}
.donation::before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    font-size: 18px;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.23);
    border-radius: 10px 10px 0 0;
    padding: 5px 0 0;
    display: block;
    content: var(--donation-label-text);
    color: var(--donation-label-color);
}
.membership::before {
    content: '';
}
.donation::after {
    content: '';
    position: absolute;
    top: -50%;
    left: 0;
    height: 200%;
    width: 1px;
    background-color: var(--donation-bg-color);
    box-shadow: 0 0 20px 20px var(--donation-shadow-color);
    opacity: 0.7;
    transform: rotate(9deg) translate3D(250px, 0, 0);
    animation: superchat 3s ease-in-out infinite;
}
@keyframes superchat {
    from {
        transform: rotate(9deg) translate3D(-250px, 0, 0);
    }
}

/* hide chat input to give more space to the chat */
/*
#input-panel, yt-live-chat-viewer-engagement-message-renderer {
  display: none !important;
}
*/

yt-live-chat-item-list-renderer {
  margin-bottom: 20px;
}

yt-live-chat-text-message-renderer {
    font-size: 24px !important;
    line-height: 32px;
}


yt-live-chat-text-message-renderer,
yt-live-chat-paid-message-renderer,
yt-live-chat-membership-item-renderer {
    cursor: pointer;
}

yt-live-chat-text-message-renderer[is-deleted],
yt-live-chat-paid-message-renderer[is-deleted],
yt-live-chat-membership-item-renderer[is-deleted] {
    cursor: default;
}
  </style>
</head>
<body>

<div id="output" class="output"></div>

<script>
  (function (w) {
    w.URLSearchParams = w.URLSearchParams || function (searchString) {
      const self = this
      self.searchString = searchString
      self.get = function (name) {
        const results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(self.searchString)
        if (results == null) {
          return null
        }
        else {
          return decodeURI(results[1]) || 0
        }
      }
    }

  })(window)

  const urlParams = new URLSearchParams(window.location.search)

  const transitionStyles = {
    slideup: {
      in: 'slideup',
      out: 'slidedown',
    },
    slideleft: {
      in: 'slideinleft',
      out: 'slideoutleft',
    },
    fadein: {
      in: 'fadein',
      out: 'fadeout',
    }
  }

  let transition = transitionStyles.fadein

  if (urlParams.has("style")) {
    transition = transitionStyles[urlParams.get("style")] || transition
  }

  console.log(`transition:`, transition)

  let nextComment = null
  let roomID = "test"

  if (urlParams.has("session")) {
    roomID = urlParams.get("session")
  } else if (urlParams.has("s")) {
    roomID = urlParams.get("s")
  } else {
    window.location.href = "https://github.com/steveseguin/live-chat-overlay#readme"
  }

  const socket = new WebSocket("wss://api.action.wtf:666")

  socket.onclose = function () {
    setTimeout(function() {
      window.location.reload(true)
    }, 100)
  }

  socket.onopen = function () {
    socket.send(JSON.stringify({ "join": roomID }))
  }

  const outputElement = document.getElementById("output")
  outputElement.classList.add(transition.out)

  socket.addEventListener('message', function (event) {
    if (!event.data) return
    const eventData = JSON.parse(event.data)
    if (!eventData.contents) {
      // Fade out Clearing
      console.log(`Clearing`)
      outputElement.classList.add(transition.out)
      outputElement.classList.remove(transition.in)
      return clearInterval(nextComment)
    }
    const data = eventData.contents
    outputElement.classList.add(transition.out)
    outputElement.classList.remove(transition.in)
    clearInterval(nextComment)
    nextComment = setTimeout(function() {
      outputElement.innerHTML = `<div class="hl-c-cont highlight-chat">
        <div class="hl-name">${data.chatname}
          <div class="hl-badges">${data.chatbadges}</div>
        </div>
        <div class="hl-message" style="${data.backgroundColor} ${data.textColor}">${data.chatmessage}</div>
        <div class="hl-img"><img src="${data.chatimg}" onerror="this.style.display='none'"></div>
        ${data.hasDonation}
        ${data.hasMembership}
      </div>`
      textFit(document.getElementsByClassName('hl-name'), { multiLine: false })
      textFit(document.getElementsByClassName('hl-message'))
      outputElement.classList.remove(transition.out)
      outputElement.classList.add(transition.in)
    }, 700)
  })
</script>
</body>
</html>