abs-pos-non-replaced-vrl-178.xht (3074B)
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 3 <html xmlns="http://www.w3.org/1999/xhtml"> 4 5 <head> 6 7 <title>CSS Writing Modes Test: absolutely positioned non-replaced element - 'direction: rtl' and 'right' is 'auto' and 'width' and 'left' are not 'auto'</title> 8 9 <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> 10 <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" /> 11 <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-height" title="10.6.4 Absolutely positioned, non-replaced elements" /> 12 <link rel="match" href="abs-pos-non-replaced-vrl-130-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'rtl' and 'right' is 'auto' and 'width' and 'left' are not 'auto' and 'writing-mode' is 'vertical-rl', then solve for 'left'." /> 16 17 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> 18 <style type="text/css"><![CDATA[ 19 html 20 { 21 writing-mode: vertical-rl; 22 } 23 24 div#containing-block 25 { 26 background: red url("support/bg-red-2col-2row-320x320.png"); 27 color: transparent; 28 direction: rtl; 29 font: 80px/1 Ahem; 30 height: 320px; 31 position: relative; 32 width: 320px; 33 } 34 35 div#containing-block > span 36 { 37 background-color: green; 38 height: 1em; 39 left: 1em; 40 position: absolute; 41 right: auto; 42 width: 1em; 43 } 44 45 /* 46 " 47 Layout calculation rules (such as those in CSS2.1, Section 10.3) that apply to the horizontal dimension in horizontal writing modes instead apply to the vertical dimension in vertical writing modes. 48 " 49 7.1 Principles of Layout in Vertical Writing Modes 50 http://www.w3.org/TR/css-writing-modes-3/#vertical-layout 51 52 So here, *right and *left properties are input into the §10.6.4 algorithms where *right properties refer to *top properties in the layout rules and where *left properties refer to *bottom properties in the layout rules. 53 54 " 55 4. 'top' is 'auto', 'height' and 'bottom' are not 'auto', then set 'auto' values for 'margin-top' and 'margin-bottom' to 0, and solve for 'top' 56 " 57 58 'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width of containing block 59 60 So: 61 62 (solve) : right: auto 63 + 64 0px : margin-right 65 + 66 0px : border-right-width 67 + 68 0px : padding-right 69 + 70 80px : width 71 + 72 0px : padding-left 73 + 74 0px : border-left-width 75 + 76 0px : margin-left 77 + 78 80px : left 79 ===================== 80 320px : width of containing block 81 82 And so computed right value must be 160px . 83 */ 84 85 ]]></style> 86 87 </head> 88 89 <body> 90 91 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 92 93 <div id="containing-block">1 2 34<span></span></div> 94 95 </body> 96 </html>