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124 lines
6.2 KiB
HTML
124 lines
6.2 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>Subscripts and Superscripts metrics</title>
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<link rel="help" href="http://www.mathml-association.org/MathMLinHTML5/S3.html#SS4">
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<meta name="assert" content="Verify metrics of scripted elements for bases of different heights.">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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math, mspace {
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font-size: 10px;
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}
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</style>
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<script>
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/* This test does not use any specific fonts and so the exact rules are not
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specified precisely. We assume reasonable values for script shifts and
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spacing. */
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function getBox(aId) {
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var box = document.getElementById(aId).getBoundingClientRect();
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box.middle = (box.bottom + box.top) / 2;
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return box;
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}
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setup({ explicit_done: true });
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window.addEventListener("load", runTests);
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var sizeArray = [50, 75, 100];
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function runTests() {
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test(function() {
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var e = 1;
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sizeArray.forEach(function(size) {
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assert_approx_equals(getBox("msub" + size + "base").middle, getBox("baseline").bottom, e, "msub base " + size + "is placed on the baseline");
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assert_approx_equals(getBox("msup" + size + "base").middle, getBox("baseline").bottom, e, "msup base " + size + "is placed on the baseline");
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assert_approx_equals(getBox("msubsup" + size + "base").middle, getBox("baseline").bottom, e, "msubsup base " + size + "is placed on the baseline");
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assert_approx_equals(getBox("multi" + size + "base").middle, getBox("baseline").bottom, e, "mmultiscripts base " + size + "is placed on the baseline");
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});
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}, "Alignment on the baseline for bases of different heights");
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test(function() {
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var e = 5;
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sizeArray.forEach(function(size) {
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assert_approx_equals(getBox("msub" + size + "sub").middle, getBox("msub" + size + "base").bottom, e, "msub script " + size + "is placed at the top of of the base");
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});
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}, "Vertical position of the scripts for bases of different heights");
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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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<p>
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<math>
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<mspace id="baseline" width="30px" height="2px" depth="0px" mathbackground="blue"/>
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<msub id="msub50">
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<mspace id="msub50base" width="30px" height="50px" depth="50px" mathbackground="black"/>
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<mspace id="msub50sub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msub>
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<msup id="msup50">
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<mspace id="msup50base" width="30px" height="50px" depth="50px" mathbackground="black"/>
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<mspace id="msup50sup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msup>
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<msubsup id="msubsup50">
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<mspace id="msubsup50base" width="30px" height="50px" depth="50px" mathbackground="black"/>
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<mspace id="msubsup50sub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="msubsup50sup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msubsup>
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<mmultiscripts id="multi50">
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<mspace id="multi50base" width="30px" height="50px" depth="50px" mathbackground="black"/>
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<mspace id="multi50postsub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="multi50postsup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mprescripts/>
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<mspace id="multi50presub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="multi50presup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</mmultiscripts>
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<msub id="msub75">
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<mspace id="msub75base" width="30px" height="75px" depth="75px" mathbackground="black"/>
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<mspace id="msub75sub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msub>
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<msup id="msup75">
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<mspace id="msup75base" width="30px" height="75px" depth="75px" mathbackground="black"/>
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<mspace id="msup75sup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msup>
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<msubsup id="msubsup75">
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<mspace id="msubsup75base" width="30px" height="75px" depth="75px" mathbackground="black"/>
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<mspace id="msubsup75sub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="msubsup75sup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msubsup>
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<mmultiscripts id="multi75">
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<mspace id="multi75base" width="30px" height="75px" depth="75px" mathbackground="black"/>
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<mspace id="multi75postsub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="multi75postsup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mprescripts/>
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<mspace id="multi75presub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="multi75presub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</mmultiscripts>
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<msub id="msub100">
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<mspace id="msub100base" width="30px" height="100px" depth="100px" mathbackground="black"/>
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<mspace id="msub100sub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msub>
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<msup id="msup100">
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<mspace id="msup100base" width="30px" height="100px" depth="100px" mathbackground="black"/>
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<mspace id="msup100sup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msup>
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<msubsup id="msubsup100">
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<mspace id="msubsup100base" width="30px" height="100px" depth="100px" mathbackground="black"/>
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<mspace id="msubsup100sub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="msubsup100sup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</msubsup>
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<mmultiscripts id="multi100">
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<mspace id="multi100base" width="30px" height="100px" depth="100px" mathbackground="black"/>
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<mspace id="multi100postsub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="multi100postsup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mprescripts/>
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<mspace id="multi100presub" width="10px" height="5px" depth="5px" mathbackground="black"/>
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<mspace id="multi100presup" width="10px" height="5px" depth="5px" mathbackground="black"/>
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</mmultiscripts>
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</math>
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</p>
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<hr/>
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</body>
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</html>
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