gecko-dev/layout/base/tests/test_bug435293-skew.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=435293
-->
<head>
<title>Test for Bug 435293</title>
<script type="text/javascript" src="/MochiKit/packed.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<style>
.test {
background: green;
height: 100px;
width: 100px;
}
#test1 {
-moz-transform: skewx(30deg);
}
#test2 {
-moz-transform: skewy(60deg);
}
#test3 {
-moz-transform: skew(45deg, 45deg);
}
/* We will set test 4 and 5 from JS in order to use exact values.
For clarity, their style is as follows:
#test4 {
-moz-transform: skew(2(PI)rad, 45deg);
}
#test5 {
-moz-transform: skew(PI/4rad, 150grad);
}*/
#test6 {
-moz-transform: skew(80%, 78px);
}
#test7 {
-moz-transform: skew(2em, 40ex);
}
#test8 {
-moz-transform: skew(-45deg, -465deg);
}
#test9 {
-moz-transform: skew(30deg, 30deg, 30deg);
}
#test10 {
display:none;
-moz-transform: skew(50grad, 89.99999999999999deg);
}
/* For test 11, we style it in JS to obtain exact values. For clarity, the
rule that will be created is below.
#test11 {
-moz-transform: skew(300grad, (PI/2)rad);
}*/
</style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=435293">Mozilla Bug 435293</a>
<p id="display"></p>
<div id="content">
<div id="test1" class="test">
test
</div>
<p id="test2" class="test">
test
</p>
<div id="test3" class="test">
test
</div>
<div id="test4" class="test">
test
</div>
<div id="test5" class="test">
test
</div>
<div id="test6" class="test">
test
</div>
<div id="test7" class="test">
test
</div>
<div id="test8" class="test">
test
</div>
<div id="test9" class="test">
test
</div>
<div id="test10" class="test">
test
</div>
<div id="test11" class="test">
test
</div>
</div>
<pre id="test">
<script type="application/javascript">
runtests();
function runtests() {
// Set the style rules for test 4, 5, and 11 using Math.pi instead of
// approximations
var e = document.getElementById("test4");
e.setAttribute("style", "-moz-transform: skew(" + Math.PI * 2 + "rad, 45deg);");
e = document.getElementById("test5");
e.setAttribute("style", "-moz-transform: skew(" + Math.PI/4 + "rad, 150grad);");
e = document.getElementById("test11");
e.setAttribute("style", "-moz-transform: skew(300grad, " + Math.PI/2 + "rad");
// For test 1 we need to handle the contingency that different systems may
// round differently. We will parse out the values and compare them
// individually. The matrix should be: matrix(1, 0, 0.57735, 1, 0px, 0px)
var style = window.getComputedStyle(document.getElementById("test1"), "");
var tformStyle = style.getPropertyValue("-moz-transform");
var tformValues = tformStyle.substring(tformStyle.indexOf('(') + 1,
tformStyle.indexOf(')')).split(',');
is((+tformValues[0]), 1, "Test1: skewx: param 0 is 1");
is((+tformValues[1]), 0, "Test1: skewx: param 1 is 0");
ok(verifyRounded(tformValues[2], 0.57735), "Test1: skewx: Rounded param 2 is in bounds");
is((+tformValues[3]), 1, "Test1: skewx: param 3 is 1");
is(tformValues[4].trim(), "0px", "Test1: skewx: param 4 is 0px");
is(tformValues[5].trim(), "0px", "Test1: skewx: param 5 is 0px");
// Again, handle rounding for test 2, proper matrix should be:
// matrix(1, 1.73205, 0, 1, 0px, 0px)
style = window.getComputedStyle(document.getElementById("test2"), "");
tformStyle = style.getPropertyValue("-moz-transform");
tformValues = tformStyle.substring(tformStyle.indexOf('(') + 1,
tformStyle.indexOf(')')).split(',');
is((+tformValues[0]), 1, "Test2: skewy: param 0 is 1");
ok(verifyRounded(tformValues[1], 1.73205), "Test2: skewy: Rounded param 1 is in bounds");
is((+tformValues[2]), 0, "Test2: skewy: param 2 is 0");
is((+tformValues[3]), 1, "Test2: skewy: param 3 is 1");
is(tformValues[4].trim(), "0px", "Test2: skewy: param 4 is 0px");
is(tformValues[5].trim(), "0px", "Test2: skewy: param 5 is 0px");
style = window.getComputedStyle(document.getElementById("test3"), "");
is(style.getPropertyValue("-moz-transform"), "matrix(1, 1, 1, 1, 0px, 0px)",
"Test3: Skew proper matrix is applied");
style = window.getComputedStyle(document.getElementById("test4"), "");
is(style.getPropertyValue("-moz-transform"), "matrix(1, 1, 0, 1, 0px, 0px)",
"Test4: Skew mixing deg and rad");
style = window.getComputedStyle(document.getElementById("test5"), "");
is(style.getPropertyValue("-moz-transform"), "matrix(1, -1, 1, 1, 0px, 0px)",
"Test5: Skew mixing rad and grad");
style = window.getComputedStyle(document.getElementById("test6"), "");
is(style.getPropertyValue("-moz-transform"), "none",
"Test6: Skew with invalid units");
style = window.getComputedStyle(document.getElementById("test7"), "");
is(style.getPropertyValue("-moz-transform"), "none",
"Test7: Skew with more invalid units");
// Test 8: skew with negative degrees, here again we must handle rounding.
// The matrix should be: matrix(1, 3.73206, -1, 1, 0px, 0px)
style = window.getComputedStyle(document.getElementById("test8"), "");
tformStyle = style.getPropertyValue("-moz-transform");
tformValues = tformStyle.substring(tformStyle.indexOf('(') + 1,
tformStyle.indexOf(')')).split(',');
is(tformValues[0], 1, "Test8: Test skew with negative degrees-param 0 is 1");
ok(verifyRounded(tformValues[1], 3.73206), "Test8: Rounded param 1 is in bounds");
is((+tformValues[2]), -1, "Test8: param 2 is -1");
is((+tformValues[3]), 1, "Test8: param 3 is 1");
is(tformValues[4].trim(), "0px", "Test8: param 4 is 0px");
is(tformValues[5].trim(), "0px", "Test8: param 5 is 0px");
style = window.getComputedStyle(document.getElementById("test9"), "");
is(style.getPropertyValue("-moz-transform"), "none",
"Test9: Skew in 3d should be ignored");
style = window.getComputedStyle(document.getElementById("test10"), "");
is(style.getPropertyValue("-moz-transform"), "matrix(1, -10000, 1, 1, 0px, 0px)",
"Test10: Skew with nearly infinite numbers");
style = window.getComputedStyle(document.getElementById("test11"), "");
is(style.getPropertyValue("-moz-transform"), "matrix(1, -10000, 10000, 1, 0px, 0px)",
"Test11: Skew with more infinite numbers");
}
// Verifies that aVal is +/- 0.00001 of aTrueVal
// Returns true if so, false if not
function verifyRounded(aVal, aTrueVal) {
return (Math.abs(aVal - aTrueVal).toFixed(5) <= 0.00001);
}
</script>
</pre>
</body>
</html>