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<!doctype html>
<meta charset="utf-8">
<title>Event.screenX/Y on a zoomed page.</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<style>
#target {
width: 100px;
height: 100px;
background-color: blue;
/* We want synthesizeMouseAtCenter to click on the same point regardless of
zoom, so we achieve that by centering the target in our viewport */
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
}
</style>
<div id="target" style=""></div>
<script>
const target = document.getElementById("target");
async function getScreenPositionOfTarget() {
return new Promise(resolve => {
target.addEventListener("click", function(e) {
resolve({ x: e.screenX, y: e.screenY });
}, { once: true });
synthesizeMouseAtCenter(target, {});
});
}
function getScreen() {
return {
width: screen.width,
height: screen.height,
top: screen.top,
left: screen.left,
};
}
add_task(async () => {
let pos = await getScreenPositionOfTarget();
let s = getScreen();
SpecialPowers.setFullZoom(window, 2);
let zoomedPos = await getScreenPositionOfTarget();
let zoomedScreen = getScreen();
info(`Original pos=${JSON.stringify(pos)} s=${JSON.stringify(s)}`);
info(`Zoomed pos=${JSON.stringify(zoomedPos)} s=${JSON.stringify(zoomedScreen)}`);
isfuzzy(pos.x, zoomedPos.x * 2, 1, "screenX coordinate");
isfuzzy(pos.y, zoomedPos.y * 2, 1, "screenY coordinate");
isfuzzy(s.top, zoomedScreen.top * 2, 1, "Screen.top");
isfuzzy(s.left, zoomedScreen.left * 2, 1, "Screen.left");
isfuzzy(s.width, zoomedScreen.width * 2, 1, "Screen.width");
isfuzzy(s.height, zoomedScreen.height * 2, 1, "Screen.height");
SpecialPowers.setFullZoom(window, 1);
});
</script>
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