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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1">
<title>touchmove coalescing</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
<script>
var receivedSingleTouch = false;
var receivedMultiTouch = false;
// This test does three things:
// 1. Ensures adding a new touch to existing touchmove events
// will not be coalesced with the previous single touch touchmove events
// 2. Ensures touchstart flushes the coalesced touchmove events
// 3. Ensures touchend flushes the coalesced touchmove event
async function testBrowserChildCoalescing() {
var ret = new Promise(function(resolve) {
SpecialPowers.loadChromeScript(function() {
/* eslint-env mozilla/chrome-script */
var element = this.actorParent.rootFrameLoader.ownerElement;
var rect = element.getBoundingClientRect();
var win = element.ownerDocument.defaultView;
var utils = win.windowUtils;
var x = rect.x + (rect.width / 2);
var y = Math.floor(rect.y + (rect.height / 4));
var endYForFirstTouch = Math.floor(rect.y + ((rect.height / 4) * 2));
var endYForSecondTouch = Math.floor(rect.y + ((rect.height / 4) * 4));
utils.sendTouchEvent("touchstart", [0], [x], [y], [1], [1], [0], [1],
[0], [0], [0], 0);
while (y != endYForFirstTouch) {
utils.sendTouchEvent("touchmove", [0], [x], [y], [1], [1], [0], [1],
[0], [0], [0], 0);
++y;
}
// Add a new touch and move this touch
utils.sendTouchEvent("touchstart", [0, 1], [x, x], [endYForFirstTouch, endYForFirstTouch], [1, 1], [1, 1], [0, 0], [1, 1],
[0, 0], [0, 0], [0, 0], 0);
while (y != endYForSecondTouch) {
utils.sendTouchEvent("touchmove", [0, 1], [x, x], [endYForFirstTouch, y], [1, 1], [1, 1], [0, 0], [1, 1],
[0, 0], [0, 0], [0, 0], 0);
++y;
}
utils.sendTouchEvent("touchend", [0, 1], [x, x], [endYForFirstTouch, endYForSecondTouch], [1, 1], [1, 1], [0, 0], [1, 1],
[0, 0], [0, 0], [0, 0], 0);
});
let touchStartCount = 0;
let shouldReceiveMultiTouch = false;
let receivedTouchEnd = false;
window.addEventListener("touchstart", function() {
++touchStartCount;
if (touchStartCount == 2) {
shouldReceiveMultiTouch = true;
}
}, true);
window.addEventListener("touchmove", function(e) {
if (receivedTouchEnd) {
ok(false, "Shouldn't get any touchmove events after touchend");
}
// Make touchmove handling slow
var start = performance.now();
while (performance.now() < (start + 10));
if (shouldReceiveMultiTouch) {
is(e.touches.length, 2, "Should get two touches for multi touch");
receivedMultiTouch = true;
} else {
is(e.touches.length, 1, "Should get one touch for single touch");
receivedSingleTouch = true;
}
}, true);
window.addEventListener("touchend", async function(e) {
receivedTouchEnd = true;
// Request a tick to ensure touchend has successfully flushed
// coalesced touchmove events
await new Promise(r => {
window.requestAnimationFrame(() => {
window.requestAnimationFrame(r);
});
});
resolve();
}, {once: true});
});
return ret;
}
async function runTests() {
await SpecialPowers.pushPrefEnv({"set": [["dom.events.coalesce.touchmove", true]]});
await testBrowserChildCoalescing();
ok(receivedSingleTouch, "Should've got single touch");
ok(receivedMultiTouch, "Should've got multi touch");
opener.finish();
window.close();
}
function init() {
SpecialPowers.pushPrefEnv({"set": [["dom.w3c_touch_events.enabled", true]]},
runTests);
}
</script>
</head>
<body onload="SimpleTest.waitForFocus(init);">
</body>
</html>