| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Subscripts and Superscripts metrics</title> |
| <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#subscripts-and-superscripts-msub-msup-msubsup"> |
| <meta name="assert" content="Verify metrics of scripted elements for bases of different heights."> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/mathml/support/feature-detection.js"></script> |
| <style> |
| math, mspace { |
| 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; |
| return box; |
| } |
| |
| setup({ explicit_done: true }); |
| window.addEventListener("load", runTests); |
| |
| var sizeArray = [50, 75, 100]; |
| |
| function runTests() { |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var e = 1; |
| sizeArray.forEach(function(size) { |
| assert_approx_equals(getBox("msub" + size + "base").middle, getBox("baseline").bottom, e, "msub base " + size + "is placed on the baseline"); |
| assert_approx_equals(getBox("msup" + size + "base").middle, getBox("baseline").bottom, e, "msup base " + size + "is placed on the baseline"); |
| assert_approx_equals(getBox("msubsup" + size + "base").middle, getBox("baseline").bottom, e, "msubsup base " + size + "is placed on the baseline"); |
| assert_approx_equals(getBox("multi" + size + "base").middle, getBox("baseline").bottom, e, "mmultiscripts base " + size + "is placed on the baseline"); |
| }); |
| }, "Alignment on the baseline for bases of different heights"); |
| |
| test(function() { |
| assert_true(MathMLFeatureDetection.has_mspace()); |
| |
| var e = 5; |
| sizeArray.forEach(function(size) { |
| 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"); |
| }); |
| }, "Vertical position of the scripts for bases of different heights"); |
| |
| done(); |
| } |
| </script> |
| </head> |
| <body> |
| <div id="log"></div> |
| <p> |
| <math> |
| <mspace id="baseline" width="30px" height="2px" depth="0px" style="background: blue"/> |
| <msub id="msub50"> |
| <mspace id="msub50base" width="30px" height="50px" depth="50px" style="background: black"/> |
| <mspace id="msub50sub" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msub> |
| <msup id="msup50"> |
| <mspace id="msup50base" width="30px" height="50px" depth="50px" style="background: black"/> |
| <mspace id="msup50sup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msup> |
| <msubsup id="msubsup50"> |
| <mspace id="msubsup50base" width="30px" height="50px" depth="50px" style="background: black"/> |
| <mspace id="msubsup50sub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="msubsup50sup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msubsup> |
| <mmultiscripts id="multi50"> |
| <mspace id="multi50base" width="30px" height="50px" depth="50px" style="background: black"/> |
| <mspace id="multi50postsub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="multi50postsup" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mprescripts/> |
| <mspace id="multi50presub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="multi50presup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </mmultiscripts> |
| <msub id="msub75"> |
| <mspace id="msub75base" width="30px" height="75px" depth="75px" style="background: black"/> |
| <mspace id="msub75sub" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msub> |
| <msup id="msup75"> |
| <mspace id="msup75base" width="30px" height="75px" depth="75px" style="background: black"/> |
| <mspace id="msup75sup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msup> |
| <msubsup id="msubsup75"> |
| <mspace id="msubsup75base" width="30px" height="75px" depth="75px" style="background: black"/> |
| <mspace id="msubsup75sub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="msubsup75sup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msubsup> |
| <mmultiscripts id="multi75"> |
| <mspace id="multi75base" width="30px" height="75px" depth="75px" style="background: black"/> |
| <mspace id="multi75postsub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="multi75postsup" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mprescripts/> |
| <mspace id="multi75presub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="multi75presub" width="10px" height="5px" depth="5px" style="background: black"/> |
| </mmultiscripts> |
| <msub id="msub100"> |
| <mspace id="msub100base" width="30px" height="100px" depth="100px" style="background: black"/> |
| <mspace id="msub100sub" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msub> |
| <msup id="msup100"> |
| <mspace id="msup100base" width="30px" height="100px" depth="100px" style="background: black"/> |
| <mspace id="msup100sup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msup> |
| <msubsup id="msubsup100"> |
| <mspace id="msubsup100base" width="30px" height="100px" depth="100px" style="background: black"/> |
| <mspace id="msubsup100sub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="msubsup100sup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </msubsup> |
| <mmultiscripts id="multi100"> |
| <mspace id="multi100base" width="30px" height="100px" depth="100px" style="background: black"/> |
| <mspace id="multi100postsub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="multi100postsup" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mprescripts/> |
| <mspace id="multi100presub" width="10px" height="5px" depth="5px" style="background: black"/> |
| <mspace id="multi100presup" width="10px" height="5px" depth="5px" style="background: black"/> |
| </mmultiscripts> |
| </math> |
| </p> |
| </body> |
| </html> |
