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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <title>Test for Bug 39139</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="initial-scale=0.60, minimum-scale=0.60, maximum-scale=0.60">
    <style type="text/css">

      body {
        font-family: 'Lucida Grande', Verdana, Arial;
        font-size: 12px;
      }

      #stage {
        margin: 150px auto;
        width: 600px;
        height: 400px;
        /*
Setting the perspective of the contents of the stage
but not the stage itself
*/
        -webkit-perspective: 800;
      }

      #rotate {
        margin: 0 auto;
        width: 600px;
        height: 400px;
        /* Ensure that we're in 3D space */
        -webkit-transform-style: preserve-3d;
        /*
Make the whole set of rows use the x-axis spin animation
for a duration of 7 seconds, running infinitely and linearly
*/
        -webkit-animation-name: x-spin;
        -webkit-animation-duration: 7s;
        -webkit-animation-iteration-count: infinite;
        -webkit-animation-timing-function: linear;
      }

      .ring {
        margin: 0 auto;
        height: 110px;
        width: 600px;
        -webkit-transform-style: preserve-3d;
        -webkit-animation-iteration-count: infinite;
        -webkit-animation-timing-function: linear;
      }
      
      .ring > :nth-child(odd) {
        background-color: #995C7F;
      }

      .ring > :nth-child(even) {
        background-color: #835A99;
      }

      .poster {
        position: absolute;
        left: 250px;
        width: 100px;
        height: 100px;
        opacity: 0.7;
        color: rgba(0,0,0,0.9);
        -webkit-border-radius: 10px;
      }
      
      .poster > p {
        font-family: 'Georgia', serif;
        font-size: 36px;
        font-weight: bold;
        text-align: center;
        margin-top: 28px;
      }

      /*
Set up each row to have a different animation duration
and alternating y-axis rotation directions.
*/
      #ring-1 {
        -webkit-animation-name: y-spin;
        -webkit-animation-duration: 5s;
      }

      #ring-2 {
        -webkit-animation-name: back-y-spin;
        -webkit-animation-duration: 4s;
      }

      #ring-3 {
        -webkit-animation-name: y-spin;
        -webkit-animation-duration: 3s;
      }

      /*

Here we define each of the three individual animations that
we will be using to have our 3D rotation effect. The first
animation will perform a full rotation on the x-axis, we'll
use that on the whole set of objects. The second and third
animations will perform a full rotation on the y-axis in
opposite directions, alternating directions between rows.
Note that you currently have to specify an intermediate step
for rotations even when you are using individual transformation
constructs.

*/
      @-webkit-keyframes x-spin {
        0% { -webkit-transform: rotateX(0deg); }
        50% { -webkit-transform: rotateX(180deg); }
        100% { -webkit-transform: rotateX(360deg); }
      }

      @-webkit-keyframes y-spin {
        0% { -webkit-transform: rotateY(0deg); }
        50% { -webkit-transform: rotateY(180deg); }
        100% { -webkit-transform: rotateY(360deg); }
      }

      @-webkit-keyframes back-y-spin {
        0% { -webkit-transform: rotateY(360deg); }
        50% { -webkit-transform: rotateY(180deg); }
        100% { -webkit-transform: rotateY(0deg); }
      }
    </style>

    <script type="text/javascript">

      const POSTERS_PER_ROW = 12;
      const RING_RADIUS = 200;

      function setup_posters (row)
      {
        var posterAngle = 360 / POSTERS_PER_ROW;
        for (var i = 0; i < POSTERS_PER_ROW; i ++) {
          var poster = document.createElement('div');
          poster.className = 'poster';
          // compute and assign the transform for this poster
          var transform = 'rotateY(' + (posterAngle * i) + 'deg) translateZ(' + RING_RADIUS + 'px)';
          poster.style.webkitTransform = transform;
          // setup the number to show inside the poster
          var content = poster.appendChild(document.createElement('p'));
          content.textContent = i;
          // add the poster to the row
          row.appendChild(poster);
        }

      }

      function init ()
      {
        setup_posters(document.getElementById('ring-1'));
        setup_posters(document.getElementById('ring-2'));
        setup_posters(document.getElementById('ring-3'));
      }

      // call init once the document is fully loaded
      window.addEventListener('load', init, false);

    </script>
  </head>
  
  <body>

    <p>This is a test for <a href="https://bugs.webkit.org/show_bug.cgi?id=39139">Bug 39139: Pages
    that use hardware acceleration don't repaint after waking computer from sleep</a>. To test, put
    your computer to sleep (or "Standby", as Windows calls it). When you wake your computer up, the
    animation below should still be running.</p>
    <div id="stage">
      <div id="rotate">
        <div id="ring-1" class="ring"></div>
        <div id="ring-2" class="ring"></div>
        <div id="ring-3" class="ring"></div>
      </div>
    </div>

  </body>
  
</html>
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