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css-text-line-break-zh-in-normal.html
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css-text-line-break-zh-in-normal.html
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<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="utf-8"/>
<title>CSS text, linebreaks: IN (normal,zh)</title>
<link rel="author" title="Richard Ishida" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#line-break-property">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<meta name="assert" content="When the language is Chinese, and line-break:normal, a browser will NOT allow a break before an inseparable character.">
<style type="text/css">
@font-face {
font-family: 'mplus-1p-regular';
src: url('/fonts/mplus-1p-regular.woff') format('woff');
}
#wrapper { position: relative; }
.test { color: red; }
.test, .ref { font-size: 30px; font-family: mplus-1p-regular, sans-serif; width: 185px; padding: 0; border: 1px solid orange; line-height: 1em; }
</style>
<style>
.test { line-break: normal; }
</style>
<script>
var charlist = `2024 ONE DOT LEADER
2025 TWO DOT LEADER
2026 HORIZONTAL ELLIPSIS
22EF MIDLINE HORIZONTAL ELLIPSIS
FE19 PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS`
</script>
</head>
<body>
<script>
var lines = charlist.split('\n')
var out = '<div id="log"></div>\n'
for (var i=0;i<lines.length;i++) {
// get the data
var firstSpace = lines[i].indexOf(' ')
var hex = lines[i].substr(0,firstSpace)
var name = lines[i].substr(firstSpace)
// make a test
out += '<div class="wrapper"><div>'+hex+'</div>' +
'<div class="test" id="test'+i+'" lang="zh">文文文文文文&#x'+hex+';字<span id="testSpan'+i+'">字</span></div>' +
'<div class="ref" id="ref'+i+'" lang="zh">文文文文文<br/>文&#x'+hex+';字<span id="refSpan'+i+'">字</span></div>' +
'</div>'
}
document.querySelector('body').innerHTML = out
setup({explicit_done: true});
document.fonts.ready.then(validate);
function validate() {
for (i=0;i<lines.length;i++) {
test(function() {
assert_approx_equals(
document.getElementById('testSpan'+i).getBoundingClientRect().left,
document.getElementById('refSpan'+i).getBoundingClientRect().left, 1);
// Hide successful tests.
document.getElementById('test'+i).parentNode.style.display = 'none';
}, lines[i]+' may NOT appear at line start if zh and normal');
}
done();
}
</script>
<!--Notes:
The test creates a box with room for 6 characters, causing wrapping to occur either between the 6th and the 7th character, or before the 6th if the breaks after the 6th or before the 7th are prohibited.
It also creates the expected behaviour with a ref instance, using <br/>. Each line ends with a span. The test then checks whether the left edge of the span is in the same place in test and ref instance.
-->
</body>
</html>