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<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1">
<head>
<style>
img {
width: 300px;
height: 225px;
}
body, html {
margin: 0;
}
</style>
<script>
function selectImageOverlay()
{
const overlay = internals.shadowRoot(document.querySelector("img")).querySelector("div#image-overlay");
offset = [...overlay.parentNode.childNodes].indexOf(overlay);
internals.setSelectionWithoutValidation(overlay.parentNode, offset, overlay.parentNode, offset + 1);
}
addEventListener("load", () => {
if (!window.internals)
return;
internals.installImageOverlay(document.querySelector("img"), [{
topLeft : new DOMPointReadOnly(0, 0),
topRight : new DOMPointReadOnly(1, 0),
bottomRight : new DOMPointReadOnly(1, 0.5),
bottomLeft : new DOMPointReadOnly(0, 0.5),
children: [
{
text : "foobar",
topLeft : new DOMPointReadOnly(0, 0),
topRight : new DOMPointReadOnly(1, 0),
bottomRight : new DOMPointReadOnly(1, 0.5),
bottomLeft : new DOMPointReadOnly(0, 0.5),
}
]
}]);
});
</script>
</head>
<body><img src='sunset-in-cupertino-600px.jpg'></img></body>
</html>
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