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active-selection-045.html
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active-selection-045.html
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<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="UTF-8">
<title>CSS Pseudo-Elements Test: active selection and image</title>
<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
<link rel="help" href="https://www.w3.org/TR/css-pseudo-4/#highlight-painting">
<link rel="match" href="../reference/ref-nothing-below.xht">
<meta name="assert" content="This test checks that the associated overlay for image must not cover (or leak) outside the image's content box.">
<style>
/*
Chromium 80+ highlights the
top of line box minus
content box and the bottom
of line box minus content
box.
Firefox 72+ consistently highlights
only the image content box itself.
*/
div
{
font-size: 300px;
}
img::selection
{
background-color: red;
}
span#masking
{
background-color: white;
display: inline-block;
height: 100px;
position: relative;
right: 100px;
width: 100px;
}
</style>
<script>
function startTest()
{
var targetRange = document.createRange();
/* We first create an empty range */
targetRange.selectNodeContents(document.getElementById("test"));
/* Then we set the range boundaries to the children of div#test */
window.getSelection().addRange(targetRange);
/* Finally, we now select such range of content */
document.documentElement.className = "";
}
</script>
<body >
<p>Test passes if there is nothing below.
<div id="test"><img src="support/100x100-red.png" alt="Image download support must be enabled"><span id="masking"></span></div>