abs-pos-non-replaced-vlr-133.xht (3564B)
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 'width' and 'right' are 'auto' and 'left' is 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-vlr-009-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'rtl' and 'width' and 'right' are 'auto' and 'left' is not 'auto' and 'writing-mode' is 'vertical-lr', then the width is based on the content and then solve for 'right'." /> 16 17 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> 18 <style type="text/css"><![CDATA[ 19 div#containing-block 20 { 21 background: red url("support/bg-red-2col-2row-320x320.png"); 22 color: transparent; 23 direction: rtl; 24 font: 80px/1 Ahem; 25 height: 320px; 26 position: relative; 27 width: 320px; 28 writing-mode: vertical-lr; 29 } 30 31 div#containing-block > span 32 { 33 background-color: red; 34 color: green; 35 left: 1em; 36 position: absolute; 37 right: auto; 38 width: auto; 39 writing-mode: horizontal-tb; 40 } 41 42 /* 43 " 44 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. 45 " 46 7.1 Principles of Layout in Vertical Writing Modes 47 http://www.w3.org/TR/css-writing-modes-3/#vertical-layout 48 49 So here, *left and *right properties are input into the §10.6.4 algorithms where *left properties refer to *top properties in the layout rules and where *right properties refer to *bottom properties in the layout rules. 50 51 " 52 1. 'top' and 'height' are 'auto' and 'bottom' is not 'auto', then the height is based on the content per 10.6.7, set 'auto' values for 'margin-top' and 'margin-bottom' to 0, and solve for 'top' 53 " 54 55 'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width of containing block 56 57 So: 58 59 (solve) : right: auto 60 + 61 0px : margin-right 62 + 63 0px : border-right-width 64 + 65 0px : padding-right 66 + 67 (based on the content) : width: auto 68 + 69 0px : padding-left 70 + 71 0px : border-left-width 72 + 73 0px : margin-left 74 + 75 80px : left 76 ===================== 77 320px : width of containing block 78 79 gives us: 80 81 (solve) : right: auto 82 + 83 0px : margin-right 84 + 85 0px : border-right-width 86 + 87 0px : padding-right 88 + 89 80px : (based on the content) : width: auto 90 + 91 0px : padding-left 92 + 93 0px : border-left-width 94 + 95 0px : margin-left 96 + 97 80px : left 98 ===================== 99 320px : width of containing block 100 101 And so computed right value must be 160px . 102 */ 103 104 ]]></style> 105 106 </head> 107 108 <body> 109 110 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 111 112 <div id="containing-block">1 2 34<span>X</span></div> 113 114 </body> 115 </html>