subsup-4.html (6706B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>Subscripts and Superscripts metrics</title> 6 <link rel="help" href="https://w3c.github.io/mathml-core/#subscripts-and-superscripts-msub-msup-msubsup"> 7 <meta name="assert" content="Verify metrics of scripted elements for bases of different heights."> 8 <script src="/resources/testharness.js"></script> 9 <script src="/resources/testharnessreport.js"></script> 10 <script src="/mathml/support/feature-detection.js"></script> 11 <style> 12 math, mspace { 13 font-size: 10px; 14 } 15 </style> 16 <script> 17 /* This test does not use any specific fonts and so the exact rules are not 18 specified precisely. We assume reasonable values for script shifts and 19 spacing. */ 20 21 function getBox(aId) { 22 var box = document.getElementById(aId).getBoundingClientRect(); 23 box.middle = (box.bottom + box.top) / 2; 24 return box; 25 } 26 27 setup({ explicit_done: true }); 28 window.addEventListener("load", runTests); 29 30 var sizeArray = [50, 75, 100]; 31 32 function runTests() { 33 test(function() { 34 assert_true(MathMLFeatureDetection.has_mspace()); 35 36 var e = 1; 37 sizeArray.forEach(function(size) { 38 assert_approx_equals(getBox("msub" + size + "base").middle, getBox("baseline").bottom, e, "msub base " + size + "is placed on the baseline"); 39 assert_approx_equals(getBox("msup" + size + "base").middle, getBox("baseline").bottom, e, "msup base " + size + "is placed on the baseline"); 40 assert_approx_equals(getBox("msubsup" + size + "base").middle, getBox("baseline").bottom, e, "msubsup base " + size + "is placed on the baseline"); 41 assert_approx_equals(getBox("multi" + size + "base").middle, getBox("baseline").bottom, e, "mmultiscripts base " + size + "is placed on the baseline"); 42 }); 43 }, "Alignment on the baseline for bases of different heights"); 44 45 test(function() { 46 assert_true(MathMLFeatureDetection.has_mspace()); 47 48 var e = 5; 49 sizeArray.forEach(function(size) { 50 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"); 51 }); 52 }, "Vertical position of the scripts for bases of different heights"); 53 54 done(); 55 } 56 </script> 57 </head> 58 <body> 59 <div id="log"></div> 60 <p> 61 <math> 62 <mspace id="baseline" width="30px" height="2px" depth="0px" style="background: blue"/> 63 <msub id="msub50"> 64 <mspace id="msub50base" width="30px" height="50px" depth="50px" style="background: black"/> 65 <mspace id="msub50sub" width="10px" height="5px" depth="5px" style="background: black"/> 66 </msub> 67 <msup id="msup50"> 68 <mspace id="msup50base" width="30px" height="50px" depth="50px" style="background: black"/> 69 <mspace id="msup50sup" width="10px" height="5px" depth="5px" style="background: black"/> 70 </msup> 71 <msubsup id="msubsup50"> 72 <mspace id="msubsup50base" width="30px" height="50px" depth="50px" style="background: black"/> 73 <mspace id="msubsup50sub" width="10px" height="5px" depth="5px" style="background: black"/> 74 <mspace id="msubsup50sup" width="10px" height="5px" depth="5px" style="background: black"/> 75 </msubsup> 76 <mmultiscripts id="multi50"> 77 <mspace id="multi50base" width="30px" height="50px" depth="50px" style="background: black"/> 78 <mspace id="multi50postsub" width="10px" height="5px" depth="5px" style="background: black"/> 79 <mspace id="multi50postsup" width="10px" height="5px" depth="5px" style="background: black"/> 80 <mprescripts/> 81 <mspace id="multi50presub" width="10px" height="5px" depth="5px" style="background: black"/> 82 <mspace id="multi50presup" width="10px" height="5px" depth="5px" style="background: black"/> 83 </mmultiscripts> 84 <msub id="msub75"> 85 <mspace id="msub75base" width="30px" height="75px" depth="75px" style="background: black"/> 86 <mspace id="msub75sub" width="10px" height="5px" depth="5px" style="background: black"/> 87 </msub> 88 <msup id="msup75"> 89 <mspace id="msup75base" width="30px" height="75px" depth="75px" style="background: black"/> 90 <mspace id="msup75sup" width="10px" height="5px" depth="5px" style="background: black"/> 91 </msup> 92 <msubsup id="msubsup75"> 93 <mspace id="msubsup75base" width="30px" height="75px" depth="75px" style="background: black"/> 94 <mspace id="msubsup75sub" width="10px" height="5px" depth="5px" style="background: black"/> 95 <mspace id="msubsup75sup" width="10px" height="5px" depth="5px" style="background: black"/> 96 </msubsup> 97 <mmultiscripts id="multi75"> 98 <mspace id="multi75base" width="30px" height="75px" depth="75px" style="background: black"/> 99 <mspace id="multi75postsub" width="10px" height="5px" depth="5px" style="background: black"/> 100 <mspace id="multi75postsup" width="10px" height="5px" depth="5px" style="background: black"/> 101 <mprescripts/> 102 <mspace id="multi75presub" width="10px" height="5px" depth="5px" style="background: black"/> 103 <mspace id="multi75presub" width="10px" height="5px" depth="5px" style="background: black"/> 104 </mmultiscripts> 105 <msub id="msub100"> 106 <mspace id="msub100base" width="30px" height="100px" depth="100px" style="background: black"/> 107 <mspace id="msub100sub" width="10px" height="5px" depth="5px" style="background: black"/> 108 </msub> 109 <msup id="msup100"> 110 <mspace id="msup100base" width="30px" height="100px" depth="100px" style="background: black"/> 111 <mspace id="msup100sup" width="10px" height="5px" depth="5px" style="background: black"/> 112 </msup> 113 <msubsup id="msubsup100"> 114 <mspace id="msubsup100base" width="30px" height="100px" depth="100px" style="background: black"/> 115 <mspace id="msubsup100sub" width="10px" height="5px" depth="5px" style="background: black"/> 116 <mspace id="msubsup100sup" width="10px" height="5px" depth="5px" style="background: black"/> 117 </msubsup> 118 <mmultiscripts id="multi100"> 119 <mspace id="multi100base" width="30px" height="100px" depth="100px" style="background: black"/> 120 <mspace id="multi100postsub" width="10px" height="5px" depth="5px" style="background: black"/> 121 <mspace id="multi100postsup" width="10px" height="5px" depth="5px" style="background: black"/> 122 <mprescripts/> 123 <mspace id="multi100presub" width="10px" height="5px" depth="5px" style="background: black"/> 124 <mspace id="multi100presup" width="10px" height="5px" depth="5px" style="background: black"/> 125 </mmultiscripts> 126 </math> 127 </p> 128 </body> 129 </html>