446 lines
19 KiB
HTML
446 lines
19 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Space-like elements</title>
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<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
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<link rel="help" href="https://w3c.github.io/mathml-core/#definition-of-space-like-elements">
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<link rel="help" href="https://w3c.github.io/mathml-core/#operator-fence-separator-or-accent-mo">
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<link rel="help" href="https://w3c.github.io/mathml-core/#layout-of-mrow">
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<meta name="assert" content="Verify definition of space-like elements">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/mathml/support/feature-detection.js"></script>
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<script src="/mathml/support/box-navigation.js"></script>
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<style>
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/* Default spacing of operator 'X' is 0.2777777777777778em so quite different
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from the measured/specified 0em and 1em. */
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math, math * {
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font: 25px/1 Ahem;
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}
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mn {
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color: black;
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}
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mo {
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color: yellow;
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}
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.testedElement, .testedElement * {
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color: blue !important;
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background: blue !important;
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}
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.oof1 {
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position: absolute;
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}
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.oof2 {
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position: fixed;
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}
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.nobox {
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display: none;
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}
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</style>
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<script>
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function spaceBefore(id) {
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var element = document.getElementById(id);
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var mnBeforeParent = previousInFlowSibling(element.parentNode);
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return element.getBoundingClientRect().left - mnBeforeParent.getBoundingClientRect().right;
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}
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function spaceAfter(id) {
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var element = document.getElementById(id);
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var mnAfterParent = nextInFlowSibling(element.parentNode);
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return mnAfterParent.getBoundingClientRect().left - element.getBoundingClientRect().right;
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}
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setup({ explicit_done: true });
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window.addEventListener("load", runTests);
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function runTests() {
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var epsilon = 1;
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var emToPx = 25;
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("complex1"), emToPx, epsilon);
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assert_approx_equals(spaceAfter("complex1"), emToPx, epsilon);
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}, "complex space-like subtree");
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("complex1-bis"), emToPx, epsilon);
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assert_approx_equals(spaceAfter("complex1-bis"), emToPx, epsilon);
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}, "complex space-like subtree, from in-flow children");
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("complex2"), 0, epsilon);
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assert_approx_equals(spaceAfter("complex2"), 2 * emToPx, epsilon);
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}, "complex non-space-like subtree");
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test(function() {
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assert_true(MathMLFeatureDetection.has_operator_spacing());
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assert_approx_equals(spaceBefore("complex2-bis"), 0, epsilon);
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assert_approx_equals(spaceAfter("complex2-bis"), 2 * emToPx, epsilon);
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}, "complex non-space-like subtree, from in-flow children");
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done();
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}
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</script>
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</head>
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<body>
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<div id="log"></div>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- This element is space-like because it is made of nested
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mrow, mstyle, mpadded, mphantom, mtext, mspace
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-->
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<mrow class="testedElement" id="complex1">
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<mtext>X</mtext>
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<mstyle>
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<mstyle>
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<mtext>X</mtext>
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<mtext>X</mtext>
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</mstyle>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mpadded>
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<mtext>X</mtext>
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<mrow></mrow>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mphantom>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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</mphantom>
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<mrow>
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<mtext>X</mtext>
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<mtext>X</mtext>
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</mrow>
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<mspace width="25px"></mspace>
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</mpadded>
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<mspace width="25px"></mspace>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mpadded>
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<mphantom>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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</mphantom>
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<mtext>X</mtext>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mtext>X</mtext>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mphantom>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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</mphantom>
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<mtext>X</mtext>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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</mpadded>
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</mstyle>
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<mspace width="25px"></mspace>
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</mrow>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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<p>
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<math>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mn>X</mn>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mrow>
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<!-- This element is space-like because it is made of nested
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mrow, mstyle, mpadded, mphantom, mtext, mspace
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-->
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<mrow class="testedElement" id="complex1-bis">
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mstyle>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mstyle>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mstyle>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mpadded>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mrow></mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mpadded>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mpadded>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mpadded>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mstyle>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mo lspace="1em" rspace="0em">X</mo>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mn>X</mn>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</math>
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</p>
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<p>
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<math>
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<mn>X</mn>
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<mrow>
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<!-- This element is not space-like. It is made of nested
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mrow, mstyle, mpadded, mphantom, mtext, mspace but contains
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one non-space like descendant (an mn element).
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-->
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<mrow class="testedElement" id="complex2">
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<mtext>X</mtext>
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<mstyle>
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<mstyle>
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<mtext>X</mtext>
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<mtext>X</mtext>
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</mstyle>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mpadded>
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<mtext>X</mtext>
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<mrow></mrow>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mphantom>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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</mphantom>
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<mrow>
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<mtext>X</mtext>
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<mtext>X</mtext>
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</mrow>
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<mspace width="25px"></mspace>
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</mpadded>
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<mspace width="25px"></mspace>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mpadded>
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<mphantom>
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<mn>X</mn> <!-- mn is not space-like -->
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<mspace width="25px"></mspace>
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</mphantom>
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<mtext>X</mtext>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mtext>X</mtext>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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<mphantom>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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</mphantom>
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<mtext>X</mtext>
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<mtext>X</mtext>
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<mspace width="25px"></mspace>
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</mpadded>
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</mstyle>
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<mspace width="25px"></mspace>
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</mrow>
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<mo lspace="1em" rspace="0em">X</mo>
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</mrow>
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<mn>X</mn>
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</math>
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</p>
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<p>
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<math>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mn>X</mn>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mrow>
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<!-- This element is not space-like. It is made of nested
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mrow, mstyle, mpadded, mphantom, mtext, mspace but contains
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one non-space like descendant (an mn element).
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-->
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<mrow class="testedElement" id="complex2-bis">
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mstyle>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mstyle>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mstyle>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mpadded>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mrow></mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mphantom>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mrow>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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</mpadded>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mtext>X</mtext>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mspace width="25px"></mspace>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
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<mpadded>
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<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mphantom>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mn>X</mn> <!-- mn is not space-like -->
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mspace width="25px"></mspace>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
</mphantom>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mtext>X</mtext>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mtext>X</mtext>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mspace width="25px"></mspace>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mtext>X</mtext>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mtext>X</mtext>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mspace width="25px"></mspace>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mphantom>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mtext>X</mtext>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mspace width="25px"></mspace>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
</mphantom>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mtext>X</mtext>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mtext>X</mtext>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mspace width="25px"></mspace>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
</mpadded>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
</mstyle>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mspace width="25px"></mspace>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
</mrow>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mo lspace="1em" rspace="0em">X</mo>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
</mrow>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
<mn>X</mn>
|
|
<mn class="oof1">0</mn><mn class="oof2">1</mn><mn class="nobox">2</mn>
|
|
</math>
|
|
</p>
|
|
</body>
|
|
</html>
|