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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=2100"/>
<title>Check that double tapping active scrollable elements in fixed pos work</title>
<script src="apz_test_native_event_utils.js"></script>
<script src="apz_test_utils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script>
async function makeActive(x, y, targetId) {
let theTarget = document.getElementById(targetId);
await promiseNativeMouseEventWithAPZAndWaitForEvent({
type: "click",
target: theTarget,
offsetX: x,
offsetY: y,
});
await promiseApzFlushedRepaints();
ok(isLayerized(targetId), "target should be layerized at this point");
let utils = SpecialPowers.getDOMWindowUtils(window);
let targetScrollId = utils.getViewId(theTarget);
ok(targetScrollId > 0, "target should have a scroll id");
}
async function test() {
let useTouchpad = (location.search == "?touchpad");
let resolution = await getResolution();
ok(resolution > 0,
"The initial_resolution is " + resolution + ", which is some sane value");
await makeActive(100, 50, "target");
let target = document.getElementById("target");
// Check that double-tapping once zooms in
await doubleTapOn(target, 100, 50, useTouchpad);
let prev_resolution = resolution;
resolution = await getResolution();
ok(resolution > prev_resolution, "The first double-tap has increased the resolution to " + resolution);
// Check that double-tapping again on the same spot zooms out
await doubleTapOn(target, 100, 50, useTouchpad);
prev_resolution = resolution;
resolution = await getResolution();
ok(resolution < prev_resolution, "The second double-tap has decreased the resolution to " + resolution);
}
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
</script>
<style>
.fixed {
top: 100px;
width: 500px;
height: 300px;
background: blue;
position: fixed;
}
.abox {
width: 200px;
height: 100px;
background: yellow;
overflow: auto;
}
.spacer {
height: 400vh;
background: lightgrey;
}
</style>
</head>
<body>
<div class="fixed">
<div class="abox" id="target">
<div class="spacer" style="width: 50px;"></div>
</div>
</div>
<div class="spacer" style="width: 100px;"></div>
</body>
</html>
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