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26 December 2018, 22:31:15 UTC
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Tip revision: 0c93c0877c816f3b565eaaab7987e9c131475c1c authored by James Graham on 12 April 2018, 12:48:29 UTC
Use version-specific prefs files when running Firefox
Tip revision: 0c93c08
abs-pos-non-replaced-vlr-023.xht 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

 <head>

  <title>CSS Writing Modes Test: absolutely positioned non-replaced element - 'direction: rtl' and 'left' and 'width' are 'auto' and 'right' is not 'auto'</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#vertical-layout" title="7.1 Principles of Layout in Vertical Writing Modes" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width" title="10.3.7 Absolutely positioned, non-replaced elements" />
  <link rel="match" href="abs-pos-non-replaced-vlr-009-ref.xht" />

  <meta name="flags" content="ahem image" />
  <meta name="assert" content="When 'direction' is 'rtl' and 'left' and 'width' are 'auto' and 'right' is not 'auto', then the width becomes shrink-to-fit and then solve for 'left'." />

  <style type="text/css"><![CDATA[
  div#containing-block
    {
      background: red url("support/bg-red-2col-2row-320x320.png");
      color: transparent;
      direction: rtl;
      font: 80px/1 Ahem;
      height: 320px;
      position: relative;
      width: 320px;
    }

  div#containing-block > span
    {
      background-color: red;
      color: green;
      left: auto;
      position: absolute;
      right: 2em;
      width: auto;
      writing-mode: vertical-lr;
    }

/*
"
1. 'left' and 'width' are 'auto' and 'right' is not 'auto', then the width is shrink-to-fit. Then solve for 'left'
"

'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width of containing block

So:

  (solve) : left: auto
  +
      0px : margin-left
  +
      0px : border-left-width
  +
      0px : padding-left
  +
  (shrink-to-fit) : width: auto
  +
      0px : padding-right
  +
      0px : border-right-width
  +
      0px : margin-right
  +
     160px : right
    =====================
    320px : width of containing block

gives us:

  (solve) : left: auto
  +
      0px : margin-left
  +
      0px : border-left-width
  +
      0px : padding-left
  +
     80px : (shrink-to-fit) : width: auto
  +
      0px : padding-right
  +
      0px : border-right-width
  +
      0px : margin-right
  +
     160px : right
    =====================
    320px : width of containing block

And so computed left value must be 80px .
*/

  ]]></style>

 </head>

 <body>

  <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p>

  <div id="containing-block">1 2 34<span>X</span></div>

 </body>
</html>
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