File: //usr/share/doc/libjs-excanvas/examples/testcases/resizing.html
<html>
<head>
<title>ExplorerCanvas Text Case</title>
<!--[if IE]><script type="text/javascript" src="../excanvas.js"></script><![endif]-->
<script>
// Safari is known not to handle resizing well, expect this to
// compare to Firefox
var cv, ctx, size = 80;
var img = new Image();
img.src = "../examples/ff.jpg";
function a() {
cv = document.getElementById("aa");
ctx = cv.getContext("2d");
l();
}
function l() {
size = (size + 1) % 800;
cv.width = Number(size + 200);
cv.height = Number((size + 200) / 2);
// Firefox autoclears the canvas at this point
ctx.save();
ctx.translate(50, 50);
ctx.scale(0.1, 0.1);
ctx.rotate(size/800 * Math.PI*8);
ctx.drawImage(img, 0, -75);
ctx.restore();
ctx.save();
ctx.beginPath();
ctx.moveTo(0, 0);
ctx.lineTo(cv.width, cv.height);
ctx.moveTo(20, 20);
ctx.lineTo(80, 20);
ctx.lineTo(80, 80);
ctx.lineTo(20, 80);
ctx.stroke();
ctx.closePath();
ctx.restore();
ctx.save();
ctx.beginPath();
ctx.scale(size / 200, size / 200);
ctx.arc(100, 50, 20, 0, Math.PI, true);
ctx.fill();
ctx.restore();
setTimeout(l, 50);
}
</script>
<style>
canvas {
background-color:#eee;
}
</style>
</head>
<body onload="a();">
<canvas id="aa" width="200" height="200">Fallback <b>content</b> markup</canvas>
</body>
</html>