002.html | Explore in Territory

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="../resources/test-helper.js"></script>
<head>
<title>Drag and drop: dropping block element onto canvas</title>
<style type="text/css">
div
  {width:20px;
  height:20px;
  background-color:green;}
</style>
<script type="application/ecmascript">
function paint(color)
  {var canvas = document.querySelector('canvas'),
  c = canvas.getContext('2d');
  c.fillStyle = 'green';
  c.beginPath();
  c.moveTo(0,0);
  c.lineTo(100,0);
  c.lineTo(100,100);
  c.lineTo(0,100);
  c.closePath();
  c.fill();}
function start(event)
  {event.dataTransfer.effectAllowed = 'copy';
  event.dataTransfer.setData('text/plain', 'green');}
</script>
</head>
<body onload="paint('gray')">
<div draggable="true" ondragstart="start(event)"></div>
<p>Drag green box above to the gray canvas below. Canvas should turn green when you drop green box on it.</p>
<p>
  <canvas width="100" height="100" ondragenter="event.preventDefault()" ondragover="return false">Canvas</canvas>
</p>
<script>
async function test(){
  const canvas = document.querySelector('canvas');
  const div = document.querySelector('div');
  function onDropCallBack(event) {
    paint(event.dataTransfer.getData('text/plain'));
    let style = getComputedStyle(div);
    let currentColor = "rgb(0, 128, 0)";
    assert_equals(style.getPropertyValue("background-color"), currentColor);
    return true;
  }

  dragDropTest(div, canvas, onDropCallBack, 'Dragging the canvas to the bottom div should turn it green');
};
test();
</script>
</body>
</html>
chromium/third_party/blink/web_tests/external/wpt/html/editing/dnd/canvas/002.html
