css/css-tables/tentative/baseline-table.html

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<title>TABLE baseline</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<link rel="author" title="Aleks Totic" href="atotic@chromium.org" />
<link rel="help" href="https://drafts.csswg.org/css-tables-3/" />
<link rel="help" href="https://www.w3.org/TR/CSS2/visudet.html#propdef-vertical-align" />
<style>
  main table {
    display: inline-table;
    border: 15px solid green;
    background: gray;
    width: 0px;
    height: 0px;
    vertical-align:baseline;
    border-spacing: 0;
  }
  main td {
    background: #BFB;
    padding: 4px;
  }
  main td > div {
    display: inline-block;
    background: rgba(56,162,56,0.3);
  }
  .container {
    position: relative;
    outline: black dotted 1px;
    height: 100px;
    width: 400px;
    font: 50px/1 Ahem; /* baseline is 40px */
  }
</style>
<main>
<h2>&lt;TABLE&gt; baseline tests</h2>

<p>Empty table's baseline is bottom of table's border box.</p>
<div class="container">
  Xp<table data-offset-y="10">
  </table>
</div>

<p>Empty body's baseline is bottom of table's border box.</p>
<div class="container">
  Xp<table data-offset-y="10">
    <tbody>
    </tbody>
  </table>
</div>

<p>Empty row's baseline is center of the row.</p>
<div class="container">
  Xp<table data-offset-y="25">
    <tbody>
      <tr></tr>
    </tbody>
  </table>
</div>

<p>First row defines baseline even if empty.</p>
<div class="container">
  Xp<table style="font: 12px fixed" data-offset-y="25">
    <tbody>
      <tr></tr>
      <tr><td>1,0</td></tr>
    </tbody>
  </table>
</div>

<p>Cell's baseline defined row's baseline only if cell is vertical-align:baseline.</p>
<div class="container">
  Xp<table style="font-size: 24px" data-offset-y="2">
    <tbody>
      <tr><td style="vertical-align:baseline">Xp</td></tr>
    </tbody>
  </table></div>
</div>
<div class="container">
  Xp<table style="font-size:24px" data-offset-y="0">
    <tbody>
      <tr><td style="vertical-align:middle">Xp</td></tr>
    </tbody>
  </table>
</div>


<p>Table's vertical-align: top.</p>
<div class="container">
  Xp<table style="vertical-align:top" data-offset-y="0"></table>
</div>

<p>Table's vertical-align: middle. </p>
<div class="container">
  Xp<table style="vertical-align:middle" data-offset-y="5"></table>
</div>

<p>Table's vertical-align: bottom. </p>
<div class="container">
  Xp<table style="vertical-align:bottom" data-offset-y="20"></table>
</div>

<p>Table's top/middle/bottom combined. </p>
<div class="container">
  Xp<table style="vertical-align:top" data-offset-y="0"></table>
  <table style="vertical-align:middle" data-offset-y="5"></table>
  <table style="vertical-align:bottom" data-offset-y="20"></table>
</div>

<p>Two rows empty, 1st row has css height.</p>
<div class="container">
  Xp<table data-offset-y=25 data-expected-height=50>
    <tr style="height:20px"></tr>
    <tr></tr>
  </table>
</div>

<p>First row empty with css height, 2 row has content, </p>
<div class="container">
  Xp<table data-offset-y=25 data-expected-height=68>
    <tr style="height:20px"></tr>
    <tr><td style="font-size:10px">X</td></tr>
  </table>
</div>

<p>Empty rowspanned cells should not set baseline. This test might not be per-spec, distribution of empty cells over empty rows differs between browsers.</p>
<div class="container">
  Xp<table>
    <tr>
      <td rowspan=2 style="height:80px"></td>
      <td></td>
    </tr>
    <tr>
      <td></td>
    </tr>
  </table><div style="display:inline-block" data-offset-y=15>pX</div>
</div>

<p>Block level table inside inline block does not produce a baseline.</p>
<div class="container" style="font: 10px/1 Ahem;width:500px">
  Xp<br>Xp<table
  title="inline table produces a baseline"
  data-offset-y=33><td style="vertical-align:baseline">Xp</td></table>
  <div style="display:inline-block;height:50px;background:yellow;width:50px;"
    title="empty inline block baseline is bottom of the block"
    data-offset-y=10
  ></div>
  <div style="display:inline-block;height:50px;background:yellow;width:50px;"
    title="inline block's content defines its baseline"
    data-offset-y=52
  >X</div>
  <div style="display:inline-block;height:50px;background:yellow"
    title="table inside inline block does not produce a baseline"
    data-offset-y=10
  ><table style="display:table"><td style="vertical-align:baseline">X</td></table></div>
  <div style="display:inline-block;height:50px;background:yellow"
  title="but inline table inside inline block does produce a baseline"
  data-offset-y=33
  ><table style="display:inline-table"><td style="vertical-align:baseline">X</td></table></div>
</div>

<!-- anonymous-table-no-baseline-align replica -->
<p>Anonymous tables should not generate baselines</p>
<div class="container">Xp
  <div style="height:60px;width:100px;display:inline-block;background:green"
    data-offset-y=0>
      <div style="display:table-cell;vertical-align:middle;color:yellow">&nbsp;</div>
  </div>
  <div style="height:60px;width:100px;display:inline-block;background:green"
    data-offset-y=0>
      <div style="display:table-cell;vertical-align:middle;color:yellow">>&nbsp;<br>&nbsp;<br></div>
  </div>
</div>
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