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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-transforms/transform-2d-getComputedStyle-001.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<title>CSS Transforms API Test: transform translate</title>
<link rel="author" title="Mihai Balan" href="mailto:mibalan@adobe.com">
<meta name="flags" content="dom">
<meta name="assert" content="CSS 2D transforms correctly report their matrix via getComputedStyle()">
<style type="text/css">
.block {
display: block;
width: 50px;
height: 50px;
background-color: green;
}
#translate {
transform: translate(10px, 20px);
}
#translateX {
transform: translateX(10px);
}
#translateY {
transform: translateY(20px);
}
#rotate {
transform: rotate(90deg);
}
#scale {
transform: scale(2.0);
}
#scaleX {
transform: scaleX(0.5);
}
#scaleY {
transform: scaleY(1.5);
}
#skewX {
transform: skewX(45deg);
}
#skewY {
transform: skewY(45deg);
}
#matrix {
transform: matrix(1, 2, 3, 4, 5, 6);
}
</style>
<script type="text/javascript" src="/resources/testharness.js"></script>
<script type="text/javascript" src="/resources/testharnessreport.js"></script>
</head>
<body>
<div id="log"></div>
<div id="translate" class="block"></div>
<div id="translateX" class="block"></div>
<div id="translateY" class="block"></div>
<div id="rotate" class="block"></div>
<div id="scale" class="block"></div>
<div id="scaleX" class="block"></div>
<div id="scaleY" class="block"></div>
<div id="skewX" class="block"></div>
<div id="skewY" class="block"></div>
<div id="matrix" class="block"></div>
<script type="text/javascript">
function getTransformFor(id) {
let transform =
window.getComputedStyle(document.getElementById(id)).getPropertyValue("transform");
// Round matrix arguments to allow for small errors in numerical precision.
transform = transform.replace(/matrix\(([^\)]*)\)/g, function(match, arguments) {
let parts = arguments.split(",");
parts = parts.map(str => parseFloat(parseFloat(str).toFixed(6)));
return 'matrix(' + parts.join(", ") + ')';
});
return transform;
}
function clear(id) {
const element = document.getElementById(id);
const value = window.getComputedStyle(element).transform;
element.style.display = 'none';
// For now both 'none' and 'matrix()' are accepted as resolved value of
// transform for an element with 'display: none' until we get a consensus
assert_in_array(
window.getComputedStyle(element).transform, ['none', value],
"The resolved value of 'transform' for an element with 'display: none' " +
"should be 'none' or should not depend on display value.");
}
test(function() {
assert_equals(getTransformFor("translate"), "matrix(1, 0, 0, 1, 10, 20)", "Incorrect matrix for translate()");
clear("translate");
assert_equals(getTransformFor("translateX"), "matrix(1, 0, 0, 1, 10, 0)", "Incorrect matrix for translateX()");
clear("translateX");
assert_equals(getTransformFor("translateY"), "matrix(1, 0, 0, 1, 0, 20)", "Incorrect matrix for translateY()");
clear("translateY");
}, "Matrix for translation transforms");
test(function() {
assert_equals(getTransformFor("rotate"), "matrix(0, 1, -1, 0, 0, 0)", "Incorrect matrix for rotate()");
clear("rotate");
}, "Matrix for rotate");
test(function() {
assert_equals(getTransformFor("scale"), "matrix(2, 0, 0, 2, 0, 0)", "Incorrect matrix for scale()");
clear("scale");
assert_equals(getTransformFor("scaleX"), "matrix(0.5, 0, 0, 1, 0, 0)", "Incorrect matrix for scaleX()");
clear("scaleX");
assert_equals(getTransformFor("scaleY"), "matrix(1, 0, 0, 1.5, 0, 0)", "Incorrect matrix for scaleY()");
clear("scaleY");
}, "Matrix for scaling");
test(function() {
assert_equals(getTransformFor("skewX"), "matrix(1, 0, 1, 1, 0, 0)", "Incorrect matrix for skewX()");
clear("skewX");
assert_equals(getTransformFor("skewY"), "matrix(1, 1, 0, 1, 0, 0)", "Incorrect matrix for skewY()");
clear("skewY");
}, "Matrix for skew");
test(function() {
assert_equals(getTransformFor("matrix"), "matrix(1, 2, 3, 4, 5, 6)", "Incorrect matrix for matrix()");
clear("matrix");
}, "Matrix for general transform");
</script>
</body>
</html>