<!DOCTYPE html>
<html>
<head>
<style>
img {
    position: absolute;
    top: 0;
    left: 0;
}
</style>
</head>
<body>
<img src="../../resources/green-400x400.png"></img>
<script>
addEventListener("load", () => {
    let image = document.querySelector("img");
    internals.installImageOverlay(image, [
        {
            topLeft : new DOMPointReadOnly(0, 0),
            topRight : new DOMPointReadOnly(1, 0),
            bottomRight : new DOMPointReadOnly(1, 0.5),
            bottomLeft : new DOMPointReadOnly(0, 0.5),
            children: [
                {
                    text : "helloworld1",
                    topLeft : new DOMPointReadOnly(0, 0),
                    topRight : new DOMPointReadOnly(0.5, 0),
                    bottomRight : new DOMPointReadOnly(0.5, 0.5),
                    bottomLeft : new DOMPointReadOnly(0, 0.5),
                },
                {
                    text : "helloworld2",
                    topLeft : new DOMPointReadOnly(0.5, 0),
                    topRight : new DOMPointReadOnly(1, 0),
                    bottomRight : new DOMPointReadOnly(1, 0.5),
                    bottomLeft : new DOMPointReadOnly(0.5, 0.5),
                }
            ]
        },
        {
            topLeft : new DOMPointReadOnly(0.5, 0.5),
            topRight : new DOMPointReadOnly(1, 0.5),
            bottomRight : new DOMPointReadOnly(1, 1),
            bottomLeft : new DOMPointReadOnly(0.5, 1),
            children: [
                {
                    text : "helloworld3",
                    topLeft : new DOMPointReadOnly(0.5, 0.5),
                    topRight : new DOMPointReadOnly(1, 0.5),
                    bottomRight : new DOMPointReadOnly(1, 1),
                    bottomLeft : new DOMPointReadOnly(0.5, 1),
                }
            ]
        }
    ]);

    getSelection().selectAllChildren(internals.shadowRoot(image).querySelector("div#image-overlay"));
});
</script>
</body>
</html>