integration-point-4.html

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This WPT test may be referenced by the following Test IDs:
- /mathml/relations/html5-tree/integration-point-4.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8"/>

<title>MathML inside foreignObject</title>

<link rel="help" href="https://w3c.github.io/mathml-core/#html-and-svg">

<meta name="assert" content="Verify that MathML can be used inside a foreignObject element.">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/mathml/support/feature-detection.js"></script>

<script>

  setup({ explicit_done: true });

  window.addEventListener("DOMContentLoaded", function() {

      var scale = 2;

      var epsilon = 1;

      var mfrac = document.getElementById("mfrac");

      var num = mfrac.firstElementChild.getBoundingClientRect();

      var denom = mfrac.lastElementChild.getBoundingClientRect();

      test(function() {

          assert_true(MathMLFeatureDetection.has_mspace());

          // The values of width and height are inverted (because of the

          // rotation) and multiplied by the scale factor.

          assert_approx_equals(num.height, 30 * scale, epsilon, "numerator width");

          assert_approx_equals(num.width, 40 * scale, epsilon, "numerator height");

          assert_approx_equals(denom.height, 50 * scale, epsilon, "numerator width");

          assert_approx_equals(denom.width, 60 * scale, epsilon, "numerator height");

      }, "mspace layout in SVG foreignObject");

      test(function() {

          // The horizontal/vertical metrics are inverted (because of the

          // rotation) and multiplied by the scale factor.

          assert_true(MathMLFeatureDetection.has_mfrac());

          assert_greater_than_equal(num.right - denom.left,

                                    (40 + 60) * scale,

                                    "numerator is on the right of denominator");

          assert_approx_equals((num.top + num.bottom) / 2,

                               (denom.top + denom.bottom) / 2,

                               epsilon, "numerator and denominator are vertically aligned");

      }, "mfrac layout in SVG foreignObject");

      done();

});

</script>

</head>

<body>

  <div id="log"></div>

  <svg width="400px" height="400px">

    <g transform="rotate(90, 200, 200) scale(2)">

      <foreignObject width="400px" height="400px"

                     requiredExtensions="http://www.w3.org/1998/Math/MathML">

        <math>

          <mfrac id="mfrac">

            <mspace width="30px" height="40px" style="background: cyan"></mspace>

            <mspace width="50px" height="60px" style="background: yellow"></mspace>

          </mfrac>

        </math>

      </foreignObject>

    </g>

  </svg>

</body>

</html>