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<!DOCTYPE html>
<html>
<head>
<title>nsIAccessible::childAtPoint() for canvas from browser tests</title>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
<script type="application/javascript"
src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript"
src="../common.js"></script>
<script type="application/javascript"
src="../layout.js"></script>
<script type="application/javascript">
function redrawCheckbox(context, element, x, y)
{
context.save();
context.font = '10px sans-serif';
context.textAlign = 'left';
context.textBaseline = 'middle';
var metrics = context.measureText(element.parentNode.textContent);
context.beginPath();
context.strokeStyle = 'black';
context.rect(x-5, y-5, 10, 10);
context.stroke();
if (element.checked) {
context.fillStyle = 'black';
context.fill();
}
context.fillText(element.parentNode.textContent, x+5, y);
context.beginPath();
context.rect(x-7, y-7, 12 + metrics.width+2, 14);
if (document.activeElement == element)
context.drawFocusIfNeeded(element);
context.addHitRegion({control: element});
context.restore();
}
function doTest()
{
var offsetX = 20, offsetY = 40;
getNode("hitcanvas").scrollIntoView(true);
var context = document.getElementById("hitcanvas").getContext('2d');
redrawCheckbox(context, document.getElementById('hitcheck'),
offsetX, offsetY);
var hitcanvas = getAccessible("hitcanvas");
var hitcheck = getAccessible("hitcheck");
var [hitX, hitY, hitWidth, hitHeight] = getBounds(hitcanvas);
var [deltaX, deltaY] = CSSToDevicePixels(window, offsetX, offsetY);
var docAcc = getAccessible(document);
// test if we hit the region associated with the shadow dom checkbox
var tgtX = hitX + deltaX;
var tgtY = hitY + deltaY;
hitAcc = docAcc.getDeepestChildAtPoint(tgtX, tgtY);
isObject(hitAcc, hitcheck, `Hit match at (${tgtX}, ${tgtY}`);
// test that we don't hit the region associated with the shadow dom checkbox
tgtY = hitY + deltaY * 2;
hitAcc = docAcc.getDeepestChildAtPoint(tgtX, tgtY);
isObject(hitAcc, hitcanvas, `Hit match at (${tgtX}, ${tgtY}`);
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
addA11yLoadEvent(function() {
SpecialPowers.pushPrefEnv({"set": [['canvas.hitregions.enabled', true]]}, doTest);
});
</script>
</head>
<body>
<a target="_blank"
href="https://bugzilla.mozilla.org/show_bug.cgi?id=966591"
title="nsIAccessible::childAtPoint() for canvas hit regions from browser tests">Mozilla Bug 966591</a>
<canvas id="hitcanvas">
<input id="hitcheck" type="checkbox"><label for="showA"> Show A </label>
</canvas>
</body>
</html>
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