040.xhtml - mozsearch

Enable keyboard shortcuts

<?xml version="1.0" encoding="utf-8"?>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<title>Cursor position and drag image</title>

<script type="application/ecmascript">

function start(event)

  {event.dataTransfer.effectAllowed = 'copy';

  event.dataTransfer.setDragImage(document.querySelector('canvas'), 50, 50);}

</script>

</head>

<body>

<p><a href="data:text/plain,1" ondragstart="start(event)">Drag me</a></p>

<p>Try to drag link above. Feedback overlay should be based on canvas below and mouse pointer should be anchored in its center.</p>

<p>

  <canvas width="100" height="100">Canvas</canvas>

</p>

<script type="application/ecmascript">

var canvas = document.querySelector('canvas'),

c = canvas.getContext('2d');

for(var x = 0; x != 50; x++)

  {c.fillStyle = (x%2 == 0)?'navy':'white';

  c.beginPath();

  c.moveTo(x,x);

  c.lineTo(100-x,x);

  c.lineTo(100-x,100-x);

  c.lineTo(x,100-x);

  c.closePath();

  c.fill();}

</script>

</body>

</html>