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diff --git a/layout/base/tests/test_bug435293-skew.html b/layout/base/tests/test_bug435293-skew.html new file mode 100644 index 0000000000..ce099a0c51 --- /dev/null +++ b/layout/base/tests/test_bug435293-skew.html @@ -0,0 +1,173 @@ +<!DOCTYPE HTML> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=435293 +--> +<head> + <title>Test for Bug 435293</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> + + <style> + /* Skewed boxes can get very big. The .pane wrapper prevents them + from obscuring the test results. */ + .pane { + height: 300px; + width: 300px; + float: left; + overflow: auto; + border: 1px solid black; + } + .test { + background: green; + height: 100px; + width: 100px; + margin: 100px; + } + + /* Radian units are not used in this test because our CSS + implementation stores all dimensional values in single- + precision floating point, which makes it impossible to + hit mathematically interesting angles with radians. + Degrees and grads do not suffer this problem. */ + #test1 { + transform: skewx(30deg); + } + #test2 { + transform: skewy(60deg); + } + #test3 { + transform: skew(45deg, 45deg); + } + #test4 { + transform: skew(360deg, 45deg); + } + #test5 { + transform: skew(45deg, 150grad); + } + #test6 { + transform: skew(80%, 78px); + } + #test7 { + transform: skew(2em, 40ex); + } + #test8 { + transform: skew(-45deg, -465deg); + } + #test9 { + transform: skew(30deg, 30deg, 30deg); + } + + /* approach the singularity from the negative side */ + #test10 { + transform: skew(50grad, 90.001deg); + } + #test11 { + transform: skew(300grad, 90.001deg); + } + </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 class="pane"><div id="test1" class="test">test</div></div> + <div class="pane"><p id="test2" class="test">test</p></div> + <div class="pane"><div id="test3" class="test">test</div></div> + <div class="pane"><div id="test4" class="test">test</div></div> + <div class="pane"><div id="test5" class="test">test</div></div> + <div class="pane"><div id="test6" class="test">test</div></div> + <div class="pane"><div id="test7" class="test">test</div></div> + <div class="pane"><div id="test8" class="test">test</div></div> + <div class="pane"><div id="test9" class="test">test</div></div> + <div class="pane"><div id="test10" class="test">test</div></div> + <div class="pane"><div id="test11" class="test">test</div></div> +</div> + +<pre id="test"> +<script type="application/javascript"> +runtests(); + +function runtests() { + // 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, 0, 0) + var style = window.getComputedStyle(document.getElementById("test1")); + var tformStyle = style.getPropertyValue("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]), 0, "Test1: skewx: param 4 is 0"); + is((+tformValues[5]), 0, "Test1: skewx: param 5 is 0"); + + // Again, handle rounding for test 2, proper matrix should be: + // matrix(1, 1.73205, 0, 1, 0, 0) + style = window.getComputedStyle(document.getElementById("test2")); + tformStyle = style.getPropertyValue("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]), 0, "Test2: skewy: param 4 is 0"); + is((+tformValues[5]), 0, "Test2: skewy: param 5 is 0"); + + style = window.getComputedStyle(document.getElementById("test3")); + is(style.getPropertyValue("transform"), "matrix(1, 1, 1, 1, 0, 0)", + "Test3: Skew proper matrix is applied"); + + style = window.getComputedStyle(document.getElementById("test4")); + is(style.getPropertyValue("transform"), "matrix(1, 1, 0, 1, 0, 0)", + "Test4: Skew angle wrap: proper matrix is applied"); + + style = window.getComputedStyle(document.getElementById("test5")); + is(style.getPropertyValue("transform"), "matrix(1, -1, 1, 1, 0, 0)", + "Test5: Skew mixing deg and grad"); + + style = window.getComputedStyle(document.getElementById("test6")); + is(style.getPropertyValue("transform"), "none", + "Test6: Skew with invalid units"); + + style = window.getComputedStyle(document.getElementById("test7")); + is(style.getPropertyValue("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, 0, 0) + style = window.getComputedStyle(document.getElementById("test8")); + tformStyle = style.getPropertyValue("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]), 0, "Test8: param 4 is 0"); + is((+tformValues[5]), 0, "Test8: param 5 is 0"); + + style = window.getComputedStyle(document.getElementById("test9")); + is(style.getPropertyValue("transform"), "none", + "Test9: Skew in 3d should be ignored"); + + style = window.getComputedStyle(document.getElementById("test10")); + is(style.getPropertyValue("transform"), "matrix(1, -10000, 1, 1, 0, 0)", + "Test10: Skew with nearly infinite numbers"); + + style = window.getComputedStyle(document.getElementById("test11")); + is(style.getPropertyValue("transform"), "matrix(1, -10000, 10000, 1, 0, 0)", + "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> |