tor-browser

The Tor Browser
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helper_doubletap_zoom_scrolled_overflowhidden.html (2151B)

      1 <!DOCTYPE HTML>
      2 <html>
      3 <head>
      4  <meta charset="utf-8">
      5  <meta name="viewport" content="width=2100"/>
      6  <title>Check that double tapping when the page is overflow hidden and has been scrolled down by js works</title>
      7  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
      8  <script type="application/javascript" src="apz_test_utils.js"></script>
      9  <script src="/tests/SimpleTest/paint_listener.js"></script>
     10  <script type="application/javascript">
     11 
     12 async function test() {
     13  let useTouchpad = (location.search == "?touchpad");
     14 
     15  var resolution = await getResolution();
     16  ok(resolution > 0,
     17     "The initial_resolution is " + resolution + ", which is some sane value");
     18 
     19  // instant scroll down
     20  window.scrollTo({
     21    top: window.innerHeight * 2 - 50,
     22    left: 0,
     23    behavior: 'auto'
     24  });
     25 
     26  await promiseApzFlushedRepaints();
     27 
     28  let scrollPos = window.scrollY;
     29  ok(scrollPos > window.innerHeight + 100, "window scrolled down");
     30 
     31  info("window.scrollY " + window.scrollY);
     32 
     33  info("window.innerHeight " + window.innerHeight);
     34 
     35  info("document.documentElement.scrollHeight " + document.documentElement.scrollHeight);
     36 
     37  let target = document.getElementById("target");
     38 
     39  // Check that double-tapping once zooms in
     40  info("sending double tap");
     41  await doubleTapOn(target, 10, 10, useTouchpad);
     42  var prev_resolution = resolution;
     43  resolution = await getResolution();
     44  ok(resolution > prev_resolution, "The first double-tap has increased the resolution to " + resolution);
     45 
     46  ok(window.scrollY > window.innerHeight + 100, "window is still scrolled down");
     47  ok(Math.abs(window.scrollY - scrollPos) < 2, "window didnt scroll");
     48  info("window.scrollY " + window.scrollY);
     49 }
     50 
     51 waitUntilApzStable()
     52 .then(test)
     53 .then(subtestDone, subtestFailed);
     54 
     55  </script>
     56  <style>
     57    html, body {
     58      overflow: hidden;
     59    }
     60    .spacer {
     61      background-color: #eee;
     62 
     63      height: 200vh;
     64    }
     65    .rect {
     66      background-color: #aaa;
     67      width: 100px;
     68      height: 100px;
     69    }
     70 </style>
     71 </head>
     72 <body>
     73 
     74 <div class="spacer">
     75 </div>
     76 <div id="target" class="rect">
     77 </div>
     78 <div class="spacer">
     79 </div>
     80 
     81 </body>
     82 </html>