test_getTransformTo.html

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<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>Test Element::getTransformToViewport</title>

<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>

<style>

body {

  margin: 0px;

.box {

  background-color: red;

  height: 20px;

  width: 80px;

.a {

  margin: 10px;

.b {

  margin: 20px;

.c {

  transform: translate(11px, -11px);

.d {

  transform: skewx(-45deg);

</style>

<script>

'use strict';

SimpleTest.waitForExplicitFinish();

function testTransformToParent() {

  let expectedData = [

    ["boxA", "1,0,0,0,0,1,0,0,0,0,1,0,10,0,0,1"],

    ["boxB", "1,0,0,0,0,1,0,0,0,0,1,0,20,0,0,1"],

    ["boxC", "1,0,0,0,0,1,0,0,0,0,1,0,11,-11,0,1"],

    ["boxD", "1,0,0,0,-1,1,0,0,0,0,1,0,10,0,0,1"],

];

  // Test transform to parent.

  for (let i = 0; i < expectedData.length; ++i) {

    let expected = expectedData[i];

    let element = document.getElementById(expected[0]);

    let transform = element.getTransformToParent();

    let transformFloats = transform.toFloat32Array();

    let transformString = transformFloats.toString();

    is(transformString, expected[1], "Element " + expected[0] + " has expected transform to parent.");

function testTransformToAncestorAndViewport() {

  let expectedData = [

    ["boxA", "1,0,0,0,0,1,0,0,0,0,1,0,10,10,0,1"],

    ["boxB", "1,0,0,0,0,1,0,0,0,0,1,0,20,50,0,1"],

    ["boxC", "1,0,0,0,0,1,0,0,0,0,1,0,11,79,0,1"],

];

  // Test transform to document (an actual ancestor unchanged by embedding within the mochitest framework).

  for (let i = 0; i < expectedData.length; ++i) {

    let expected = expectedData[i];

    let element = document.getElementById(expected[0]);

    let transform = element.getTransformToAncestor(document.documentElement);

    let transformFloats = transform.toFloat32Array();

    let transformString = transformFloats.toString();

    is(transformString, expected[1], "Element " + expected[0] + " has expected transform to ancestor.");

  // Test transform to a non-ancestor is equivalent to transform to viewport.

  let nonAncestorElement = document.getElementById("nonAncestor");

  for (let i = 0; i < expectedData.length; ++i) {

    let expected = expectedData[i];

    let element = document.getElementById(expected[0]);

    let transform = element.getTransformToAncestor(nonAncestorElement);

    let transformFloats = transform.toFloat32Array();

    let transformString = transformFloats.toString();

    let transformToViewport = element.getTransformToViewport();

    let transformToViewportFloats = transformToViewport.toFloat32Array();

    let transformToViewportString = transformToViewportFloats.toString();

    is(transformString, transformToViewportString, "Element " + expected[0] + " transform to non-ancestor is equivalent to transform to viewport.");

function runTests() {

  testTransformToParent();

  testTransformToAncestorAndViewport();

  SimpleTest.finish();

</script>

</head>

<body onLoad="runTests();">

<div id="boxAParent">

  <div id="boxA" class="box a">boxA</div>

</div>

<div id="boxBParent">

  <div id="boxB" class="box b">boxB</div>

</div>

<div id="boxCParent">

  <div id="boxC" class="box c">boxC</div>

</div>

<div id="boxDParent">

  <div id="boxD" class="box d">boxD</div>

</div>

<div id="nonAncestor">This div is not an ancestor of any of the boxes.</div>

</body>

</html>