tor-browser

The Tor Browser
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css-text-line-break-cpm-strict.html (2917B)

      1 <!DOCTYPE html>
      2 <html  lang="en" >
      3 <head>
      4 <meta charset="utf-8"/>
      5 <title>CSS text, linebreaks: centred punctuation (strict,unknown)</title>
      6 <link rel="author" title="Richard Ishida" href="mailto:ishida@w3.org">
      7 <link rel="help" href="https://drafts.csswg.org/css-text-3/#line-break-property">
      8 <script src="/resources/testharness.js"></script>
      9 <script src="/resources/testharnessreport.js"></script>
     10 <meta name="assert" content="When the language is unkonwn, and line-break:strict, a browser will NOT allow a break before one of the centred punctuation characters listed.">
     11 <style type="text/css">
     12 @font-face {
     13    font-family: 'mplus-1p-regular';
     14    src: url('/fonts/mplus-1p-regular.woff') format('woff');
     15    }
     16 #wrapper { position: relative; }
     17 .test { color: red; }
     18 .test, .ref { font-size: 30px; font-family: mplus-1p-regular, sans-serif; width: 185px; padding: 0; border: 1px solid orange; line-height: 1em; }
     19 </style>
     20 <style>
     21 .test { line-break: strict; }
     22 </style>
     23 <script>
     24 var charlist = `30FB  KATAKANA MIDDLE DOT
     25 FF1A  FULLWIDTH COLON
     26 FF1B  FULLWIDTH SEMICOLON
     27 FF65  HALFWIDTH KATAKANA MIDDLE DOT
     28 203C  DOUBLE EXCLAMATION MARK
     29 2047  DOUBLE QUESTION MARK
     30 2048  QUESTION EXCLAMATION MARK
     31 2049  EXCLAMATION QUESTION MARK
     32 FF01  FULLWIDTH EXCLAMATION MARK
     33 FF1F  FULLWIDTH QUESTION MARK`
     34 </script>
     35 </head>
     36 <body>
     37 <script>
     38 var lines = charlist.split('\n')
     39 var out = '<div id="log"></div>\n'
     40 for (var i=0;i<lines.length;i++) {
     41 // get the data
     42 var firstSpace = lines[i].indexOf(' ')
     43 var hex = lines[i].substr(0,firstSpace)
     44 var name = lines[i].substr(firstSpace)
     45 // make a test
     46 out +=  '<div class="wrapper"><div>'+hex+'</div>' +
     47 '<div class="test" id="test'+i+'" lang="">文文文文文文&#x'+hex+';字<span id="testSpan'+i+'">字</span></div>' +
     48  '<div class="ref" id="ref'+i+'" lang="">文文文文文<br/>文&#x'+hex+';字<span id="refSpan'+i+'">字</span></div>' +
     49  '</div>'
     50 }
     51 
     52 document.querySelector('body').innerHTML = out
     53 setup({explicit_done: true});
     54 
     55 document.fonts.ready.then(validate);
     56 
     57 function validate() {
     58  for (i=0;i<lines.length;i++) {
     59    test(function() {
     60      assert_approx_equals(
     61        document.getElementById('testSpan'+i).getBoundingClientRect().left,
     62        document.getElementById('refSpan'+i).getBoundingClientRect().left, 1);
     63      // Hide successful tests.
     64      document.getElementById('test'+i).parentNode.style.display = 'none';
     65    }, lines[i]+' may NOT appear at line start if lang unknown and strict');
     66  }
     67  done();
     68 }
     69 </script>
     70 <!--Notes:
     71 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.
     72 
     73 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.
     74 -->
     75 </body>
     76 </html>