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HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link
rel="icon"
href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🎉</text></svg>"
/>
<title>How to use multiple screens</title>
<link rel="stylesheet" href="/style.css" />
<!-- TODO: Devsite - Removed inline handlers -->
<!-- <script src="/script.js" type="module"></script> -->
</head>
<body>
<h1>How to use multiple screens</h1>
<div>
<div>
Permission Status:
<span id="permissionStatus"></span>
</div>
<div>Screens Available: <span id="screensAvail"></span></div>
</div>
<button id="detectScreen">Detect Screens</button>
<button id="create" disabled>Create Page On Random Screen</button>
</body>
</html>
CSS
:root {
color-scheme: dark light;
}
html {
box-sizing: border-box;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
body {
margin: 1rem;
font-family: system-ui, sans-serif;
}
JS
const detectButton = document.querySelector('#detectScreen');
const createButton = document.querySelector('#create');
const permissionLabel = document.querySelector('#permissionStatus');
const screensAvailLabel = document.querySelector('#screensAvail');
const popupUrl = 'supporting-popup.html';
let screenDetails = undefined;
let permission = undefined;
let currentScreenLength = undefined;
detectButton.addEventListener('click', async () => {
if ('getScreenDetails' in window) {
screenDetails = await window.getScreenDetails();
screenDetails.addEventListener('screenschange', (event) => {
if (screenDetails.screens.length !== currentScreenLength) {
currentScreenLength = screenDetails.screens.length;
updateScreenInfo();
}
});
try {
permission =
(await navigator.permissions.query({ name: 'window-placement' }))
.state === 'granted'
? 'Granted'
: 'No Permission';
} catch (err) {
console.error(err);
}
currentScreenLength = screenDetails.screens.length;
updateScreenInfo();
} else {
screenDetails = window.screen;
permission = 'Multi-Screen Window Placement API - NOT SUPPORTED';
currentScreenLength = 1;
updateScreenInfo();
}
});
createButton.addEventListener('click', () => {
const screen =
screenDetails.screens[Math.floor(Math.random() * currentScreenLength)];
const options = {
x: screen.availLeft,
y: screen.availTop,
width: screen.availWidth,
height: screen.availHeight,
};
window.open(popupUrl, '_blank', getFeaturesFromOptions(options));
});
const getFeaturesFromOptions = (options) => {
return (
'left=' +
options.x +
',top=' +
options.y +
',width=' +
options.width +
',height=' +
options.height
);
};
const updateScreenInfo = () => {
screensAvailLabel.innerHTML = currentScreenLength;
permissionLabel.innerHTML = permission;
if ('getScreenDetails' in window && screenDetails.screens.length > 1) {
createButton.disabled = false;
} else {
createButton.disabled = true;
}
};
Sauf indication contraire, le contenu de cette page est régi par une licence Creative Commons Attribution 4.0, et les échantillons de code sont régis par une licence Apache 2.0. Pour en savoir plus, consultez les Règles du site Google Developers. Java est une marque déposée d'Oracle et/ou de ses sociétés affiliées.
Dernière mise à jour le 2024/01/09 (UTC).
[{
"type": "thumb-down",
"id": "missingTheInformationINeed",
"label":"Il n'y a pas l'information dont j'ai besoin"
},{
"type": "thumb-down",
"id": "tooComplicatedTooManySteps",
"label":"Trop compliqué/Trop d'étapes"
},{
"type": "thumb-down",
"id": "outOfDate",
"label":"Obsolète"
},{
"type": "thumb-down",
"id": "translationIssue",
"label":"Problème de traduction"
},{
"type": "thumb-down",
"id": "samplesCodeIssue",
"label":"Mauvais exemple/Erreur de code"
},{
"type": "thumb-down",
"id": "otherDown",
"label":"Autre"
}]
[{
"type": "thumb-up",
"id": "easyToUnderstand",
"label":"Facile à comprendre"
},{
"type": "thumb-up",
"id": "solvedMyProblem",
"label":"J'ai pu résoudre mon problème"
},{
"type": "thumb-up",
"id": "otherUp",
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}]