| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Underscripts and Overscripts parameters</title> |
| <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#underscripts-and-overscripts-munder-mover-munderover"> |
| <meta name="assert" content="Elements munder, mover, munderover correctly use underbar/overbar and AccentBaseHeight parameters from the MATH table."> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/mathml/support/feature-detection.js"></script> |
| <style> |
| math, mspace, mo { |
| font-size: 10px; |
| } |
| @font-face { |
| font-family: accentbaseheight4000underbarextradescender5000; |
| src: url("/fonts/math/underover-accentbaseheight4000-underbarextradescender5000.woff"); |
| } |
| @font-face { |
| font-family: accentbaseheight4000underbarverticalgap7000; |
| src: url("/fonts/math/underover-accentbaseheight4000-underbarverticalgap7000.woff"); |
| } |
| @font-face { |
| font-family: accentbaseheight4000overbarextraascender3000; |
| src: url("/fonts/math/underover-accentbaseheight4000-overbarextraascender3000.woff"); |
| } |
| @font-face { |
| font-family: accentbaseheight4000overbarverticalgap11000; |
| src: url("/fonts/math/underover-accentbaseheight4000-overbarverticalgap11000.woff"); |
| } |
| </style> |
| <script> |
| var emToPx = 10 / 1000; // font-size: 10px, font.em = 1000 |
| var epsilon = 2; |
| var axisBaseHeight = 4000 * emToPx; |
| var shortBaseHeight = 3000 * emToPx; // shortBaseHeight < axisBaseHeight |
| var tallBaseHeight = 5000 * emToPx; // tallBaseHeight > axisBaseHeight |
| |
| function getBox(aId) { |
| return document.getElementById(aId).getBoundingClientRect(); |
| } |
| |
| setup({ explicit_done: true }); |
| window.addEventListener("load", () => { document.fonts.ready.then(runTests); }); |
| |
| function getBooleanValue(element, name) { |
| return (element.getAttribute(name) || "").toLowerCase() === "true"; |
| } |
| let dynamicBooleanAttributeChanges = { |
| "Invert boolean value using absent attribute": function(element, name) { |
| if (getBooleanValue(element, name)) { |
| element.removeAttribute(name); |
| } else { |
| element.setAttribute(name, "true"); |
| } |
| }, |
| |
| "Invert boolean value using invalid attribute": function(element, name) { |
| if (getBooleanValue(element, name)) { |
| element.setAttribute(name, "invalid"); |
| } else { |
| element.setAttribute(name, "true"); |
| } |
| }, |
| |
| "Change case of boolean attribute": function(element, name) { |
| if (getBooleanValue(element, name)) { |
| element.setAttribute(name, "TrUe"); |
| } else { |
| element.setAttribute(name, "FaLsE"); |
| } |
| } |
| }; |
| |
| function runTests() { |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| for (var i = 1; i <= 4; i++) { |
| for (var j = 1; j <= 6; j++) { |
| var baseId = ("base00" + i) + j; |
| assert_approx_equals(getBox("ref00" + i).bottom, |
| getBox(baseId).bottom, |
| epsilon, |
| "alignment of " + baseId); |
| } |
| } |
| }, "Baseline alignment"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| for (var i = 1; i <= 4; i++) { |
| for (var j = 1; j <= 6; j++) { |
| var baseId = ("base00" + i) + j; |
| assert_approx_equals(getBox(baseId).height, |
| j == 2 || j == 5 ? |
| tallBaseHeight :shortBaseHeight, |
| epsilon, |
| "height of " + baseId); |
| } |
| } |
| }, "Heights of bases"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var v = 5000 * emToPx; |
| assert_approx_equals(getBox("ref001").bottom - getBox("over0014").bottom, |
| shortBaseHeight, epsilon, |
| "munderover: nonaccent over short base"); |
| assert_approx_equals(getBox("ref001").bottom - getBox("over0015").bottom, |
| tallBaseHeight, epsilon, |
| "munderover: accent over tall base"); |
| assert_approx_equals(getBox("ref001").bottom - getBox("over0016").bottom, |
| axisBaseHeight, epsilon, |
| "munderover: accent over short base"); |
| for (var j = 1; j <= 6; j++) { |
| var elId = "el001" + j; |
| var baseId = "base001" + j; |
| var underId = "under001" + j; |
| assert_approx_equals(getBox(underId).top - getBox(baseId).bottom, |
| 0, epsilon, |
| "gap between " + baseId + " and " + underId); |
| assert_approx_equals(getBox(elId).bottom - getBox(underId).bottom, |
| v, epsilon, |
| "extra descender below " + underId); |
| } |
| }, "AccentBaseHeight, UnderbarExtraDescender"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var v = 7000 * emToPx; |
| assert_approx_equals(getBox("ref002").bottom - getBox("over0024").bottom, |
| shortBaseHeight, epsilon, |
| "munderover: nonaccent over short base"); |
| assert_approx_equals(getBox("ref002").bottom - getBox("over0025").bottom, |
| tallBaseHeight, epsilon, |
| "munderover: accent over tall base"); |
| assert_approx_equals(getBox("ref002").bottom - getBox("over0026").bottom, |
| axisBaseHeight, epsilon, |
| "munderover: accent over short base"); |
| for (var j = 1; j <= 6; j++) { |
| var elId = "el002" + j; |
| var baseId = "base002" + j; |
| var underId = "under002" + j; |
| var gap = (j == 2 || j == 3 ? 0 : v); |
| assert_approx_equals(getBox(underId).top - getBox(baseId).bottom, |
| gap, epsilon, |
| "gap between " + baseId + " and " + underId); |
| } |
| }, "AccentBaseHeight, UnderbarVerticalGap"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var v = 3000 * emToPx; |
| assert_approx_equals(getBox("ref003").bottom - getBox("over0031").bottom, |
| shortBaseHeight, epsilon, |
| "mover: nonaccent over short base"); |
| assert_approx_equals(getBox("ref003").bottom - getBox("over0032").bottom, |
| tallBaseHeight, epsilon, |
| "mover: accent over tall base"); |
| assert_approx_equals(getBox("ref003").bottom - getBox("over0033").bottom, |
| axisBaseHeight, epsilon, |
| "mover: accent over short base"); |
| assert_approx_equals(getBox("ref003").bottom - getBox("over0034").bottom, |
| shortBaseHeight, epsilon, |
| "munderover: nonaccent over short base"); |
| assert_approx_equals(getBox("ref003").bottom - getBox("over0035").bottom, |
| tallBaseHeight, epsilon, |
| "munderover: accent over tall base"); |
| assert_approx_equals(getBox("ref003").bottom - getBox("over0036").bottom, |
| axisBaseHeight, epsilon, |
| "munderover: accent over short base"); |
| for (var j = 1; j <= 6; j++) { |
| var elId = "el003" + j; |
| var baseId = "base003" + j; |
| if (j >= 4) { |
| var underId = "under003" + j; |
| assert_approx_equals(getBox(underId).top - getBox(baseId).bottom, |
| 0, epsilon, |
| "gap between " + baseId + " and " + underId); |
| } |
| var overId = "over003" + j; |
| assert_approx_equals(getBox(overId).top - getBox(elId).top, |
| v, epsilon, |
| "extra ascender below " + overId); |
| } |
| }, "AccentBaseHeight, OverbarExtraAscender"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| v = 11000 * emToPx; |
| assert_approx_equals(getBox("ref004").bottom - getBox("over0041").bottom, |
| shortBaseHeight + v, epsilon, |
| "mover: nonaccent over short base"); |
| assert_approx_equals(getBox("ref004").bottom - getBox("over0042").bottom, |
| tallBaseHeight, epsilon, |
| "mover: accent over tall base"); |
| assert_approx_equals(getBox("ref004").bottom - getBox("over0043").bottom, |
| axisBaseHeight, epsilon, |
| "mover: accent over short base"); |
| assert_approx_equals(getBox("ref004").bottom - getBox("over0044").bottom, |
| shortBaseHeight + v, epsilon, |
| "munderover: nonaccent over short base"); |
| assert_approx_equals(getBox("ref004").bottom - getBox("over0045").bottom, |
| tallBaseHeight, epsilon, |
| "munderover: accent over tall base"); |
| assert_approx_equals(getBox("ref004").bottom - getBox("over0046").bottom, |
| axisBaseHeight, epsilon, |
| "munderover: accent over short base"); |
| for (var j = 4; j <= 6; j++) { |
| var baseId = "base004" + j; |
| var underId = "under004" + j; |
| assert_approx_equals(getBox(underId).top - getBox(baseId).bottom, |
| 0, epsilon, |
| "gap between " + baseId + " and " + underId); |
| } |
| }, "AccentBaseHeight, OverbarVerticalGap"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| var v = 7000 * emToPx; |
| |
| for (var j = 1; j <= 4; j++) { |
| var elId = `el005${j}`; |
| var baseId = `base005${j}`; |
| var underId = `under005${j}`; |
| |
| for (name in dynamicBooleanAttributeChanges) { |
| let element = document.getElementById(elId); |
| dynamicBooleanAttributeChanges[name](element, "accentunder"); |
| var value = getBooleanValue(element, "accentunder"); |
| var gap = value ? 0 : v; |
| assert_approx_equals(getBox(underId).top - getBox(baseId).bottom, |
| gap, epsilon, |
| `${elId}: gap between base and underscript ; ${name}`); |
| }; |
| } |
| }, "Dynamic change of accentunder attribute"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| v = 11000 * emToPx; |
| for (var j = 1; j <= 4; j++) { |
| var elId = `el006${j}`; |
| var refId = `base006${j}`; |
| var overId = `over006${j}`; |
| for (name in dynamicBooleanAttributeChanges) { |
| let element = document.getElementById(elId); |
| dynamicBooleanAttributeChanges[name](element, "accent"); |
| var value = getBooleanValue(element, "accent"); |
| assert_approx_equals(getBox(refId).bottom - getBox(overId).bottom, |
| value ? axisBaseHeight : shortBaseHeight + v, |
| epsilon, |
| `${elId}: accent=${value} ; short base ; ${name}`); |
| } |
| } |
| }, "Dynamic change of accent attribute"); |
| |
| done(); |
| } |
| </script> |
| </head> |
| <body> |
| <div id="log"></div> |
| <p> |
| <math style="font-family: accentbaseheight4000underbarextradescender5000;"> |
| <mspace id="ref001" height="1em" width="3em" style="background: green"/> |
| <munder style="background: cyan" id="el0011"> |
| <mspace id="base0011" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0011" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munder style="background: cyan" id="el0012" accentunder="true"> |
| <mspace id="base0012" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0012" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munder style="background: cyan" id="el0013" accentunder="true"> |
| <mspace id="base0013" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0013" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munderover style="background: cyan" id="el0014"> |
| <mspace id="base0014" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0014" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0014" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0015" accent="true"> |
| <mspace id="base0015" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0015" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0015" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0016" accent="true"> |
| <mspace id="base0016" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0016" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0016" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| </math> |
| </p> |
| <hr/> |
| <p> |
| <math style="font-family: accentbaseheight4000underbarverticalgap7000;"> |
| <mspace id="ref002" height="1em" width="3em" style="background: green"/> |
| <munder style="background: cyan" id="el0021"> |
| <mspace id="base0021" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0021" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munder style="background: cyan" id="el0022" accentunder="true"> |
| <mspace id="base0022" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0022" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munder style="background: cyan" id="el0023" accentunder="true"> |
| <mspace id="base0023" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0023" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munderover style="background: cyan" id="el0024"> |
| <mspace id="base0024" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0024" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0024" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0025" accent="true"> |
| <mspace id="base0025" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0025" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0025" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0026" accent="true"> |
| <mspace id="base0026" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0026" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0026" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| </math> |
| </p> |
| <hr/> |
| <p> |
| <math style="font-family: accentbaseheight4000overbarextraascender3000;"> |
| <mspace id="ref003" height="1em" width="3em" style="background: green"/> |
| <mover style="background: cyan" id="el0031"> |
| <mspace id="base0031" height="3em" width="1em" style="background: black"/> |
| <mspace id="over0031" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <mover style="background: cyan" id="el0032" accent="true"> |
| <mspace id="base0032" height="5em" width="1em" style="background: black"/> |
| <mspace id="over0032" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <mover style="background: cyan" id="el0033" accent="true"> |
| <mspace id="base0033" height="3em" width="1em" style="background: black"/> |
| <mspace id="over0033" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <munderover style="background: cyan" id="el0034"> |
| <mspace id="base0034" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0034" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0034" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0035" accent="true"> |
| <mspace id="base0035" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0035" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0035" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0036" accent="true"> |
| <mspace id="base0036" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0036" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0036" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| </math> |
| </p> |
| <hr/> |
| <p> |
| <math style="font-family: accentbaseheight4000overbarverticalgap11000;"> |
| <mspace id="ref004" height="1em" width="3em" style="background: green"/> |
| <mover style="background: cyan" id="el0041"> |
| <mspace id="base0041" height="3em" width="1em" style="background: black"/> |
| <mspace id="over0041" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <mover style="background: cyan" id="el0042" accent="true"> |
| <mspace id="base0042" height="5em" width="1em" style="background: black"/> |
| <mspace id="over0042" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <mover style="background: cyan" id="el0043" accent="true"> |
| <mspace id="base0043" height="3em" width="1em" style="background: black"/> |
| <mspace id="over0043" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <munderover style="background: cyan" id="el0044"> |
| <mspace id="base0044" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0044" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0044" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0045" accent="true"> |
| <mspace id="base0045" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0045" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0045" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0046" accent="true"> |
| <mspace id="base0046" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0046" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0046" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| </math> |
| </p> |
| <hr/> |
| <p> |
| <math style="font-family: accentbaseheight4000underbarverticalgap7000;"> |
| <mspace id="ref005" height="1em" width="3em" style="background: green"/> |
| <munder style="background: cyan" id="el0051"> |
| <mspace id="base0051" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0051" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munder style="background: cyan" id="el0052" accentunder="true"> |
| <mspace id="base0052" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0052" height="1em" width="3em" style="background: blue"/> |
| </munder> |
| <munderover style="background: cyan" id="el0053"> |
| <mspace id="base0053" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0053" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0053" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0054" accentunder="true"> |
| <mspace id="base0054" height="5em" width="1em" style="background: black"/> |
| <mspace id="under0054" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0054" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| </math> |
| </p> |
| <hr/> |
| <p> |
| <math style="font-family: accentbaseheight4000overbarverticalgap11000;"> |
| <mspace id="ref006" height="1em" width="3em" style="background: green"/> |
| <mover style="background: cyan" id="el0061"> |
| <mspace id="base0061" height="3em" width="1em" style="background: black"/> |
| <mspace id="over0061" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <mover style="background: cyan" id="el0062" accent="true"> |
| <mspace id="base0062" height="3em" width="1em" style="background: black"/> |
| <mspace id="over0062" height="1em" width="3em" style="background: red"/> |
| </mover> |
| <munderover style="background: cyan" id="el0063"> |
| <mspace id="base0063" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0063" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0063" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| <munderover style="background: cyan" id="el0064" accent="true"> |
| <mspace id="base0064" height="3em" width="1em" style="background: black"/> |
| <mspace id="under0064" height="1em" width="3em" style="background: blue"/> |
| <mspace id="over0064" height="1em" width="3em" style="background: red"/> |
| </munderover> |
| </math> |
| </p> |
| |
| </body> |
| </html> |
