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<!doctype HTML>
<link rel="author" title="Chris Harrelson" href="mailto:chrishtr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-transforms-2/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
div {
width: 200px;
height: 200px;
}
.rotate45 {
transform: rotateY(45deg)
}
.rotateNeg45 {
transform: rotateY(-45deg)
}
.parent {
transform-style: preserve-3d;
}
.perspective {
perspective: 200px;
}
</style>
<div class="parent rotateNeg45">
<div id=childOfPreserve3D class="child rotate45"></div>
</div>
<div class="parent rotateNeg45">
<div id=absChildOfPreserve3D class="child rotate45" style="position: absolute"></div>
</div>
<div class="parent rotateNeg45">
<div id=fixedChildOfPreserve3D class="child rotate45" style="position: fixed"></div>
</div>
<div class="parent rotateNeg45">
<div>
<div id=childWithIntermediate class="child rotate45"></div>
</div>
</div>
<div class="parent rotateNeg45">
<div>
<div id=absWithIntermediate class="child rotate45" style="position: absolute"></div>
</div>
</div>
<div class="parent rotateNeg45">
<div>
<div id=fixedWithIntermediate class="child rotate45" style="position: fixed"></div>
</div>
</div>
<div class="perspective">
<div id=childWithPerspectiveParent class="child rotate45"></div>
<div id=absWithPerspectiveParent class="child rotate45" style="position: absolute"></div>
<div id=fixedWithPerspectiveParent class="child rotate45" style="position: fixed"></div>
</div>
<div class="perspective">
<div>
<div id=childWithIntermediateAndPerspectiveParent class="child rotate45"></div>
<div id=absWithIntermediateAndPerspectiveParent class="child rotate45" style="position: absolute"></div>
<div id=fixedWithIntermediateAndPerspectiveParent class="child rotate45" style="position: fixed"></div>
</div>
</div>
<script>
test(function() {
assert_equals(childOfPreserve3D.getBoundingClientRect().width, 200);
}, "Direct DOM parent is root of rendering context (normal flow)");
test(function() {
assert_equals(absChildOfPreserve3D.getBoundingClientRect().width, 200);
}, "Direct DOM parent is root of rendering context (absolute)");
test(function() {
assert_equals(fixedChildOfPreserve3D.getBoundingClientRect().width, 200);
}, "Direct DOM parent is root of rendering context (fixed)");
test(function() {
assert_equals(childWithIntermediate.getBoundingClientRect().width, 100);
}, "Intermediate DOM nodes cause rendering context to end (normal flow)");
test(function() {
assert_equals(absWithIntermediate.getBoundingClientRect().width, 100);
}, "Intermediate DOM nodes cause rendering context to end (absolute)");
test(function() {
assert_equals(fixedWithIntermediate.getBoundingClientRect().width, 100);
}, "Intermediate DOM nodes cause rendering context to end (fixed)");
test(function() {
assert_approx_equals(
childWithPerspectiveParent.getBoundingClientRect().width, 161, 1);
}, "Perspective applies to direct DOM normal-flow children");
test(function() {
assert_approx_equals(
absWithPerspectiveParent.getBoundingClientRect().width, 161, 1);
}, "Perspective applies to direct DOM abs-pos children");
test(function() {
assert_approx_equals(
fixedWithPerspectiveParent.getBoundingClientRect().width, 161, 1);
}, "Perspective applies to direct DOM fixed-pos children");
test(function() {
assert_approx_equals(
childWithIntermediateAndPerspectiveParent.getBoundingClientRect().width,
141, 1);
}, "Perspective does not apply to DOM normal-flow grandchildren");
test(function() {
assert_approx_equals(
absWithIntermediateAndPerspectiveParent.getBoundingClientRect().width,
141, 1);
}, "Perspective does not apply to DOM abs-pos grandchildren");
test(function() {
assert_approx_equals(
fixedWithIntermediateAndPerspectiveParent.getBoundingClientRect().width,
141, 1);
}, "Perspective does not apply to DOM fixed-pos grandchildren");
</script>
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