| <!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 ."> |
| <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; |
| } |
| </style> |
| <script> |
| /* This test does not use any specific fonts and so the exact rules are not |
| specified precisely. We assume reasonable values for script shifts and |
| spacing. */ |
| |
| function getBox(aId) { |
| var box = document.getElementById(aId).getBoundingClientRect(); |
| box.middle = (box.bottom + box.top) / 2; |
| box.center = (box.left + box.right) / 2; |
| return box; |
| } |
| |
| setup({ explicit_done: true }); |
| window.addEventListener("load", runTests); |
| |
| function runTests() { |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var e = 1; |
| for (var i = 0; i <= 3; i++) { |
| assert_approx_equals(getBox("under" + i + "base").middle, getBox("baseline").bottom, e, "munder " + i + ": base is placed on the baseline"); |
| assert_approx_equals(getBox("over" + i + "base").middle, getBox("baseline").bottom, e, "mover " + i + ": base is placed on the baseline"); |
| } |
| for (var i = 0; i <= 5; i++) { |
| assert_approx_equals(getBox("underover" + i + "base").middle, getBox("baseline").bottom, e, "munderover " + i + ": base is placed on the baseline"); |
| } |
| }, "Alignment of the base on the baseline"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var e = 1; |
| for (var i = 0; i <= 3; i++) { |
| assert_approx_equals(getBox("under" + i + "under").center, getBox("under" + i + "base").center, e, "munder " + i + ": base and script are horizontally centered"); |
| assert_approx_equals(getBox("over" + i + "over").center, getBox("over" + i + "base").center, e, "mover " + i + ": base and script are horizontally centered"); |
| } |
| for (var i = 0; i <= 5; i++) { |
| assert_approx_equals(getBox("underover" + i + "under").center, getBox("underover" + i + "base").center, e, "munderover " + i + ": base and underscript are horizontally centered"); |
| assert_approx_equals(getBox("underover" + i + "over").center, getBox("underover" + i + "base").center, e, "munderover " + i + ": base and overscript are horizontally centered"); |
| } |
| }, "Horizontal alignments of base and scripts"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| for (var i = 0; i <= 3; i++) { |
| assert_greater_than_equal(getBox("under" + i + "under").top, getBox("under" + i + "base").bottom, "munder " + i + ": script is under base"); |
| assert_less_than_equal(getBox("over" + i + "over").bottom, getBox("over" + i + "base").top, "mover " + i + ": script is over base"); |
| } |
| for (var i = 0; i <= 5; i++) { |
| assert_greater_than_equal(getBox("underover" + i + "under").top, getBox("underover" + i + "base").bottom, "munderover " + i + ": underscript is under base"); |
| assert_less_than_equal(getBox("underover" + i + "over").bottom, getBox("underover" + i + "base").top, "munderover " + i + ": overscript is over base"); |
| } |
| }, "Relative vertical positions of base and scripts"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var e = 1; |
| for (var i = 0; i <= 3; i++) { |
| assert_approx_equals(getBox("under" + i).width, Math.max(getBox("under" + i + "base").width, getBox("under" + i + "under").width), e, "munder " + i + ": width is determined by the maximum of width of base and script"); |
| assert_approx_equals(getBox("over" + i).width, Math.max(getBox("over" + i + "base").width, getBox("over" + i + "over").width), e, "mover " + i + ": width is determined by the maximum of width of base and script"); |
| } |
| for (var i = 0; i <= 5; i++) { |
| assert_approx_equals(getBox("underover" + i).width, Math.max(getBox("underover" + i + "base").width, getBox("underover" + i + "under").width, getBox("underover" + i + "over").width), e, "munderover " + i + ": width is determined by the maximum of width of base and scripts"); |
| } |
| }, "Width of scripted elements"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var e = 3.2; |
| for (var i = 0; i <= 3; i++) { |
| assert_approx_equals(getBox("under" + i).height, getBox("under" + i + "base").height + getBox("under" + i + "under").height + e, e, "munder " + i + ": height is determined by the sum of heights of base and script plus some spacing."); |
| assert_approx_equals(getBox("over" + i).height, getBox("over" + i + "base").height + getBox("over" + i + "over").height + e, e, "mover " + i + ": height is determined by the sum of heights of base and script plus some spacing."); |
| } |
| for (var i = 0; i <= 5; i++) { |
| assert_approx_equals(getBox("underover" + i).height, getBox("underover" + i + "base").height + getBox("underover" + i + "under").height + getBox("underover" + i + "over").height + e, e, "munderover " + i + ": height is determined by the sum heights of base and scripts"); |
| } |
| }, "Height of scripted elements"); |
| |
| done(); |
| } |
| </script> |
| </head> |
| <body> |
| <div id="log"></div> |
| <p> |
| <math> |
| <mspace id="baseline" width="30px" height="2px" depth="0px" style="background: blue"/> |
| <munder id="under0"> |
| <mspace id="under0base" width="30px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="under0under" width="10px" height="5px" depth="5px" style="background: black"/> |
| </munder> |
| <munder id="under1"> |
| <mspace id="under1base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="under1under" width="30px" height="5px" depth="5px" style="background: black"/> |
| </munder> |
| <munder id="under2"> |
| <mspace id="under2base" width="10px" height="15px" depth="15px" style="background: black"/> |
| <mspace id="under2under" width="10px" height="5px" depth="5px" style="background: black"/> |
| </munder> |
| <munder id="under3"> |
| <mspace id="under3base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="under3under" width="10px" height="15px" depth="15px" style="background: black"/> |
| </munder> |
| <mover id="over0"> |
| <mspace id="over0base" width="30px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="over0over" width="10px" height="5px" depth="5px" style="background: black"/> |
| </mover> |
| <mover id="over1"> |
| <mspace id="over1base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="over1over" width="30px" height="5px" depth="5px" style="background: black"/> |
| </mover> |
| <mover id="over2"> |
| <mspace id="over2base" width="10px" height="15px" depth="15px" style="background: black"/> |
| <mspace id="over2over" width="10px" height="5px" depth="5px" style="background: black"/> |
| </mover> |
| <mover id="over3"> |
| <mspace id="over3base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="over3over" width="10px" height="15px" depth="15px" style="background: black"/> |
| </mover> |
| <munderover id="underover0"> |
| <mspace id="underover0base" width="30px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover0under" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover0over" width="10px" height="5px" depth="5px" style="background: black"/> |
| </munderover> |
| <munderover id="underover1"> |
| <mspace id="underover1base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover1under" width="30px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover1over" width="10px" height="5px" depth="5px" style="background: black"/> |
| </munderover> |
| <munderover id="underover2"> |
| <mspace id="underover2base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover2under" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover2over" width="30px" height="5px" depth="5px" style="background: black"/> |
| </munderover> |
| <munderover id="underover3"> |
| <mspace id="underover3base" width="10px" height="15px" depth="15px" style="background: black"/> |
| <mspace id="underover3under" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover3over" width="10px" height="5px" depth="5px" style="background: black"/> |
| </munderover> |
| <munderover id="underover4"> |
| <mspace id="underover4base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover4under" width="10px" height="15px" depth="15px" style="background: black"/> |
| <mspace id="underover4over" width="10px" height="5px" depth="5px" style="background: black"/> |
| </munderover> |
| <munderover id="underover5"> |
| <mspace id="underover5base" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover5under" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="underover5over" width="10px" height="15px" depth="15px" style="background: black"/> |
| </munderover> |
| </math> |
| </p> |
| </body> |
| </html> |