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<!DOCTYPE html>
<title>getBoundingClientRect for elements with css zoom</title>
<link rel="author" title="Yotam Hacohen" href="mailto:yotha@chromium.org">
<link rel="author" title="Google" href="http://www.google.com/">
<link rel="help" href="https://drafts.csswg.org/css-viewport/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<head>
<style>
div {
width: 64px;
height: 64px;
background-color: blue
}
div.x4_zoom {
zoom: 4.0;
background-color: blueviolet;
}
div.x2_zoom {
background-color: chartreuse;
zoom: 2.0;
}
div.transform {
transform: scale(2);
transform-origin: top left;
}
</style>
</head>
<body>
<div id="no_zoom"></div>
<div class="x4_zoom" id="with_zoom">
</div>
<div class="x2_zoom">
<div class="x4_zoom" id="nested_zoom"></div>
</div>
<div id="transform_and_zoom" class="x4_zoom transform"></div>
<script>
setup(() => {
window.noZoom = document.getElementById("no_zoom");
window.withZoom = document.getElementById("with_zoom");
window.nestedZoom = document.getElementById("nested_zoom");
window.transformAndZoom = document.getElementById("transform_and_zoom");
});
test(function() {
assert_true(!!noZoom, "no zoom target exists");
assert_true(!!withZoom, "zoom target exists");
});
test(function() {
let noZoomRect = noZoom.getBoundingClientRect();
assert_equals(noZoomRect.left, 8, 'no zoom left');
assert_equals(noZoomRect.top, 8, 'no zoom top');
assert_equals(noZoomRect.width, 64, 'no zoom width');
assert_equals(noZoomRect.height, 64, 'no zoom height');
});
test(function() {
let ZoomRect = withZoom.getBoundingClientRect();
assert_equals(ZoomRect.left, 8, 'x4 zoom left');
assert_equals(ZoomRect.top, 8 + 64, 'x4 zoom top');
assert_equals(ZoomRect.width, 256, 'x4 zoom width');
assert_equals(ZoomRect.height, 256, 'x4 zoom height');
});
test(function() {
let nestedZoomRect = nestedZoom.getBoundingClientRect();
assert_equals(nestedZoomRect.left, 8, 'nested zoom left');
assert_equals(nestedZoomRect.top, 8 + 64 + 256, 'nested zoom top');
assert_equals(nestedZoomRect.width, 512, 'nested zoom width');
assert_equals(nestedZoomRect.height, 512, 'nested zoom height');
});
test(function() {
let transformAndZoomRect = transformAndZoom.getBoundingClientRect();
assert_equals(transformAndZoomRect.left, 8, 'transform and zoom left');
assert_equals(transformAndZoomRect.top, 8 + 64 + 256 + 128, 'transform and zoom top');
assert_equals(transformAndZoomRect.width, 512, 'transform and zoom width');
assert_equals(transformAndZoomRect.height, 512, 'transform and zoom height');
});
</script>
</body>
`
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