<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>displaystyle</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#css-styling">
<link rel="help" href="https://w3c.github.io/mathml-core/#the-displaystyle-and-scriptlevel-attributes">
<link rel="help" href="https://w3c.github.io/mathml-core/#the-math-style-property">
<meta name="assert" content="Verify that the correct inheritance of the displaystyle value by measuring the size of large operators.">
<style>
  @font-face {
    font-family: TestFont;
    src: url("/fonts/math/largeop-displayoperatorminheight5000.woff");
  }
  math  {
    font-family: TestFont;
    font-size: 10px;
  }
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/attribute-values.js"></script>
<script src="/mathml/support/fonts.js"></script>
<script>
  setup({ explicit_done: true });
  var emToPx = 10 / 1000; // font-size: 10px, font.em = 1000
  var epsilon = 5;
  function verify_displaystyle(elementId, displaystyle, description) {
      var expectedSize = (displaystyle ? 5000 : 1000) * emToPx;
      var elementSize = document.getElementById(elementId).
          getBoundingClientRect().height;
      assert_approx_equals(elementSize, expectedSize, epsilon, description);
  }

  window.addEventListener("load", () => { loadAllFonts().then(runTests); });

  function runTests() {
      for (transform in AttributeValueTransforms) {
          TransformAttributeValues(transform, ["display", "displaystyle"]);
          test(function() {
              verify_displaystyle("math_default", false, "default");
              verify_displaystyle("math_false", false, "explicit displaystyle false");
              verify_displaystyle("math_true", true, "explicit displaystyle true");
          }, `math element (${transform})`);
          test(function() {
              verify_displaystyle("math_inline", false, "explicit display inline");
              verify_displaystyle("math_block", true, "explicit display block");
              verify_displaystyle("math_block_false", false, "explicit display block and displaystyle false");
              verify_displaystyle("math_block_true", true, "explicit display block and displaystyle true");
              verify_displaystyle("math_inline_false", false, "explicit display inline and displaystyle false");
              verify_displaystyle("math_inline_true", true, "explicit display inline and displaystyle true");
          }, `math element (explicit display, ${transform})`);
          test(function() {
              verify_displaystyle("mstyle_false", false, "explicit displaystyle false");
              verify_displaystyle("mstyle_true", true, "explicit displaystyle true");
          }, `mstyle element (${transform})`);
          test(function() {
              verify_displaystyle("mtable_default", false, "default");
              verify_displaystyle("mtable_false", false, "explicit displaystyle false");
              verify_displaystyle("mtable_true", true, "explicit displaystyle true");
          }, `mtable element (${transform})`);
          test(function() {
              verify_displaystyle("mfrac_sibling", true, "sibling");
              verify_displaystyle("mfrac_numerator", false, "numerator");
              verify_displaystyle("mfrac_denominator", false, "denominator");
          }, `mfrac element (${transform})`);
          test(function() {
              verify_displaystyle("mroot_base", true, "base");
              verify_displaystyle("mroot_index", false, "index");
          }, `mroot element (${transform})`);
          test(function() {
              verify_displaystyle("msub_base", true, "base");
              verify_displaystyle("msub_subscript", false, "subscript");
          }, `msub element (${transform})`);
          test(function() {
              verify_displaystyle("msup_base", true, "base");
              verify_displaystyle("msup_supscript", false, "supscript");
          }, `msup element (${transform})`);
          test(function() {
              verify_displaystyle("msubsup_base", true, "base");
              verify_displaystyle("msubsup_subscript", false, "subscript");
              verify_displaystyle("msubsup_supscript", false, "supscript");
          }, `msubsup element (${transform})`);
          test(function() {
              verify_displaystyle("munder_base", true, "base");
              verify_displaystyle("munder_underscript", false, "underscript");
          }, `munder element (${transform})`);
          test(function() {
              verify_displaystyle("mover_base", true, "base");
              verify_displaystyle("mover_overscript", false, "overscript");
          }, `mover element (${transform})`);
          test(function() {
              verify_displaystyle("munderover_base", true, "base");
              verify_displaystyle("munderover_underscript", false, "underscript");
              verify_displaystyle("munderover_overscript", false, "overscript");
          }, `munderover element (${transform})`);
      }
      done();
  }
</script>
</head>
<body>
  <div id="log"></div>
  <math><mo id="math_default">&#x2AFF;</mo></math>
  <math display="inline"><mo id="math_inline">&#x2AFF;</mo></math>
  <math display="block"><mo id="math_block">&#x2AFF;</mo></math>
  <math displaystyle="false"><mo id="math_false">&#x2AFF;</mo></math>
  <math displaystyle="true"><mo id="math_true">&#x2AFF;</mo></math>
  <math display="block" displaystyle="false">
    <mo id="math_block_false">&#x2AFF;</mo>
  </math>
  <math display="block" displaystyle="true">
    <mo id="math_block_true">&#x2AFF;</mo>
  </math>
  <math display="inline" displaystyle="false">
    <mo id="math_inline_false">&#x2AFF;</mo>
  </math>
  <math display="inline" displaystyle="true">
    <mo id="math_inline_true">&#x2AFF;</mo>
  </math>
  <math><mstyle displaystyle="false"><mo id="mstyle_false">&#x2AFF;</mo></mstyle></math>
  <math><mstyle displaystyle="true"><mo id="mstyle_true">&#x2AFF;</mo></mstyle></math>
  <math displaystyle="true"><mtable><mtr><mtd><mo id="mtable_default">&#x2AFF;</mo></mtd></mtr></mtable></math>
  <math><mtable displaystyle="true"><mtr><mtd><mo id="mtable_true">&#x2AFF;</mo></mtd></mtr></mtable></math>
  <math displaystyle="true"><mtable displaystyle="false"><mtr><mtd><mo id="mtable_false">&#x2AFF;</mo></mtd></mtr></mtable></math>
  <math displaystyle="true"><mo id="mfrac_sibling">&#x2AFF;</mo><mfrac><mo id="mfrac_numerator">&#x2AFF;</mo><mo id="mfrac_denominator">&#x2AFF;</mo></mfrac></math>
  <math displaystyle="true"><mroot><mo id="mroot_base">&#x2AFF;</mo><mo id="mroot_index">&#x2AFF;</mo></mroot></math>
  <math displaystyle="true"><msub><mo id="msub_base">&#x2AFF;</mo><mo id="msub_subscript">&#x2AFF;</mo></msub></math>
  <math displaystyle="true"><msup><mo id="msup_base">&#x2AFF;</mo><mo id="msup_supscript">&#x2AFF;</mo></msup></math>
  <math displaystyle="true"><msubsup><mo id="msubsup_base">&#x2AFF;</mo><mo id="msubsup_subscript">&#x2AFF;</mo><mo id="msubsup_supscript">&#x2AFF;</mo></msubsup></math>
  <math displaystyle="true"><mmultiscripts><mo id="mmultiscripts_base">&#x2AFF;</mo><mo id="mmultiscripts_subscript">&#x2AFF;</mo><mo id="mmultiscripts_supscript">&#x2AFF;</mo><mprescripts/><mo id="mmultiscripts_presubscript">&#x2AFF;</mo><mo id="mmultiscripts_presupscript">&#x2AFF;</mo></mmultiscripts></math>
  <math displaystyle="true"><munder><mo id="munder_base">&#x2AFF;</mo><mo id="munder_underscript">&#x2AFF;</mo></munder></math>
  <math displaystyle="true"><mover><mo id="mover_base">&#x2AFF;</mo><mo id="mover_overscript">&#x2AFF;</mo></mover></math>
  <math displaystyle="true"><munderover><mo id="munderover_base">&#x2AFF;</mo><mo id="munderover_underscript">&#x2AFF;</mo><mo id="munderover_overscript">&#x2AFF;</mo></munderover></math>
</body>
</html>
