<!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 interaction between automatic displaystyle and specified displaystyle on descendants.">
<style>
  @font-face {
    font-family: TestFont;
    src: url("/fonts/math/largeop-displayoperatorminheight5000.woff");
  }
  math, 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("cell_false", false, "cell with displaystyle false");
              verify_displaystyle("cell_true", true, "cell with displaystyle true");
          }, `mtable element (${transform})`);
          test(function() {
              verify_displaystyle("mfrac_numerator", true, "numerator");
              verify_displaystyle("mfrac_denominator", true, "denominator");
          }, `mfrac element (${transform})`);
          test(function() {
              verify_displaystyle("mroot_base", false, "base");
              verify_displaystyle("mroot_index", true, "index");
          }, `mroot element (${transform})`);
          test(function() {
              verify_displaystyle("msub_base", false, "base");
              verify_displaystyle("msub_subscript", true, "subscript");
          }, `msub element (${transform})`);
          test(function() {
              verify_displaystyle("msup_base", false, "base");
              verify_displaystyle("msup_superscript", true, "superscript");
          }, `msup element (${transform})`);
          test(function() {
              verify_displaystyle("msubsup_base", false, "base");
              verify_displaystyle("msubsup_subscript", true, "subscript");
              verify_displaystyle("msubsup_superscript", true, "superscript");
          }, `msubsup element (${transform})`);
          test(function() {
              verify_displaystyle("munder_base", false, "base");
              verify_displaystyle("munder_underscript", true, "underscript");
          }, `munder element (${transform})`);
          test(function() {
              verify_displaystyle("mover_base", false, "base");
              verify_displaystyle("mover_overscript", true, "overscript");
          }, `mover element (${transform})`);
          test(function() {
              verify_displaystyle("munderover_base", false, "base");
              verify_displaystyle("munderover_underscript", true, "underscript");
              verify_displaystyle("munderover_overscript", true, "overscript");
          }, `munderover element (${transform})`);
      }
      done();
  }
</script>
</head>
<body>
  <div id="log"></div>
  <math displaystyle="true">
    <mtable>
      <mtr>
        <mtd>
          <mstyle displaystyle="false">
            <mo id="cell_false">&#x2AFF;</mo>
          </mstyle>
        </mtd>
        <mtd>
          <mstyle displaystyle="true">
            <mo id="cell_true">&#x2AFF;</mo>
          </mstyle>
        </mtd>
      </mtr>
    </mtable>
  </math>
  <math>
    <mfrac>
      <mstyle displaystyle="true">
        <mo id="mfrac_numerator">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="mfrac_denominator">&#x2AFF;</mo>
      </mstyle>
    </mfrac>
  </math>
  <math displaystyle="true">
    <mroot>
      <mstyle displaystyle="false">
        <mo id="mroot_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="mroot_index">&#x2AFF;</mo>
      </mstyle>
    </mroot>
  </math>
  <math displaystyle="true">
    <msub>
      <mstyle displaystyle="false">
        <mo id="msub_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="msub_subscript">&#x2AFF;</mo>
      </mstyle>
    </msub>
  </math>
  <math displaystyle="true">
    <msup>
      <mstyle displaystyle="false">
        <mo id="msup_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="msup_superscript">&#x2AFF;</mo>
      </mstyle>
    </msup>
  </math>
  <math displaystyle="true">
    <msubsup>
      <mstyle displaystyle="false">
        <mo id="msubsup_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="msubsup_subscript">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="msubsup_superscript">&#x2AFF;</mo>
      </mstyle>
    </msubsup>
  </math>
  <math displaystyle="true">
    <mmultiscripts>
      <mstyle displaystyle="false">
        <mo id="mmultiscripts_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="mmultiscripts_subscript">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="mmultiscripts_superscript">&#x2AFF;</mo>
      </mstyle>
      <mprescripts/>
      <mstyle displaystyle="true">
        <mo id="mmultiscripts_presubscript">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="mmultiscripts_presuperscript">&#x2AFF;</mo>
      </mstyle>
    </mmultiscripts>
  </math>
  <math displaystyle="true">
    <munder>
      <mstyle displaystyle="false">
        <mo id="munder_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="munder_underscript">&#x2AFF;</mo>
      </mstyle>
    </munder>
  </math>
  <math displaystyle="true">
    <mover>
      <mstyle displaystyle="false">
        <mo id="mover_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="mover_overscript">&#x2AFF;</mo>
      </mstyle>
    </mover>
  </math>
  <math displaystyle="true">
    <munderover>
      <mstyle displaystyle="false">
        <mo id="munderover_base">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="munderover_underscript">&#x2AFF;</mo>
      </mstyle>
      <mstyle displaystyle="true">
        <mo id="munderover_overscript">&#x2AFF;</mo>
      </mstyle>
    </munderover>
  </math>
</body>
</html>
