<!DOCTYPE html>

<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-getboundingclientrect">

<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-range-getboundingclientrect">

<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">

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

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

<style>

text {

font-family: Ahem;

font-size: 10px;

line-height: 1;

width: 10ch;

}

</style>

<body>

<svg width="800" height="100">

<text x="20" y="20" id="text-1">An SVG text element with no "transform" attribute</text>

<text x="20" y="50" id="text-2" transform="matrix(2,0,0,2,0,0)">An SVG with a "transform" attribute</text>

<text x="20" y="80" id="text-3" rotate="45">An SVG with a "rotate" attribute</text>

</svg>

<script>

function getBoundingClientRect(node, start, end) {

const range = document.createRange();

range.setStart(node, start);

range.setEnd(node, end);

const rect = range.getBoundingClientRect();

return rect;

}

setup({ explicit_done: true });

// When comparing element and range rect sizes, permit a 2% or 3px variability,

// to account for the differences between the element bounding box and the

// glyphs it contains.

function tolerance(expected) {

return Math.max(3, 0.02 * Math.abs(expected));

}

document.fonts.ready.then(() => {

test(() => {

const element = document.querySelector('#text-1');

const elementRect = element.getBoundingClientRect();

const rangeRect = getBoundingClientRect(element.firstChild, 0, element.firstChild.length);

assert_approx_equals(elementRect.x, rangeRect.x, tolerance(rangeRect.x), "x");

assert_approx_equals(elementRect.y, rangeRect.y, tolerance(rangeRect.y), "y");

assert_approx_equals(elementRect.width, rangeRect.width, tolerance(rangeRect.width), "width");

assert_approx_equals(elementRect.height, rangeRect.height, tolerance(rangeRect.height), "height");

}, 'Element.getBoundingClientRect() and Range.getBoundingClientRect() should match for an SVG <text>');

test(() => {

const element = document.querySelector('#text-2');

const elementRect = element.getBoundingClientRect();

const rangeRect = getBoundingClientRect(element.firstChild, 0, element.firstChild.length);

assert_approx_equals(elementRect.x, rangeRect.x, tolerance(rangeRect.x), "x");

assert_approx_equals(elementRect.y, rangeRect.y, tolerance(rangeRect.y), "y");

assert_approx_equals(elementRect.width, rangeRect.width, tolerance(rangeRect.width), "width");

assert_approx_equals(elementRect.height, rangeRect.height, tolerance(rangeRect.height), "height");

}, 'Element.getBoundingClientRect() and Range.getBoundingClientRect() should match for an SVG <text> with a transform');

test(() => {

const element = document.querySelector('#text-3');

const elementRect = element.getBoundingClientRect();

const rangeRect = getBoundingClientRect(element.firstChild, 0, element.firstChild.length);

assert_approx_equals(elementRect.x, rangeRect.x, tolerance(rangeRect.x), "x");

assert_approx_equals(elementRect.y, rangeRect.y, tolerance(rangeRect.y), "y");

assert_approx_equals(elementRect.width, rangeRect.width, tolerance(rangeRect.width), "width");

assert_approx_equals(elementRect.height, rangeRect.height, tolerance(rangeRect.height), "height");

}, 'Element.getBoundingClientRect() and Range.getBoundingClientRect() should match for an SVG <text> with a rotate');

done();

});

</script>

</body>