resize-iframe-3d-transform.tentative.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-ui/resize-iframe-3d-transform.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE HTML>

<title>Test of resizing interaction</title>

<link rel="author" title="L. David Baron" href="https://dbaron.org/">

<link rel="author" title="Google" href="http://www.google.com/">

<link rel="help" href="https://www.w3.org/TR/css-ui-4/#resize">

<link rel="help" href="https://issues.chromium.org/issues/40697767">

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

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

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

<script src="/resources/testdriver-actions.js"></script>

<script src="/resources/testdriver-vendor.js"></script>

<!--

  This test uses .tentative. because it depends on unspecified user

  interface characteristics (the position of the resizer UI and how it

  works), although those user interface characteristics are likely common

  across implementations.

-->

<style>

html, body, iframe { margin: 0; padding: 0; }

/**

 * The top left corner of the iframe is translated by 300px left and

 * 300px towards the user.  This is inside a 60deg rotation around the

 * left edge of the page, which means that that rotation moves the left

 * edge of the iframe back into the viewport.  The iframe's width is

 * squashed in half, so it's visually 150x150 content box with 2px

 * top/bottom borders and 1px left/right borders.

 * This test is using 3D transforms to test correct use of project

 * versus map for the event handling.

*/

#outer {

  transform: rotateY(60deg);

  transform-origin: top left;

  transform-style: preserve-3d;

#middle {

  transform: translateZ(300px);

  transform-style: preserve-3d;

#inner {

  transform: translateX(-304px);

  resize: both;

  border: 2px solid;

</style>

<div id="outer">

  <div id="middle">

    <iframe id="inner" srcdoc="hello world"></iframe>

  </div>

</div>

<script>

promise_test(async t => {

  let e = document.getElementById("inner");

  let w = e.getBoundingClientRect().width;

  let h = e.getBoundingClientRect().height;

  assert_equals(w, 152, "iframe width");

  assert_equals(h, 154, "iframe height");

  let x = e.getBoundingClientRect().right - 2; /* everything squashed in half */

  let y = e.getBoundingClientRect().bottom - 4;

  assert_approx_equals(x, Math.sin(Math.PI/3) * 300 - 2, 0.1, "iframe right");

  assert_equals(y, 150, "iframe bottom");

  x = Math.round(x); // Actions expects integers

  let move1 = new test_driver.Actions()

    .pointerMove(x, y)

    .pointerDown()

    .pointerMove(x-2, y-3);

  await move1.send();

  assert_equals(e.getBoundingClientRect().width, w - 2, "width after move 1");

  assert_equals(e.getBoundingClientRect().height, h - 3, "height after move 1");

  assert_equals(e.style.width, "296px", "width style after move 1");

  assert_equals(e.style.height, "147px", "height style after move 1");

  // It's odd that we have to send pointerMove and pointerDown again here.

  let move2 = new test_driver.Actions()

    .pointerMove(x-2, y-3)

    .pointerDown()

    .pointerMove(x-9, y-1)

    .pointerUp();

  await move2.send();

  assert_equals(e.getBoundingClientRect().width, w - 9, "width after move 2");

  assert_equals(e.getBoundingClientRect().height, h - 1, "height after move 2");

  assert_equals(e.style.width, "282px", "width style after move 2");

  assert_equals(e.style.height, "149px", "height style after move 2");

}, "resizing of iframe in 3D transform");

</script>