abs-pos-non-replaced-vlr-115.xht (3739B)
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 'left', 'width' and 'right' are '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-013-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'rtl' and 'left', 'width' and 'right' are 'auto' and 'writing-mode' is 'vertical-lr', then set 'left' to the static position, 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 html 20 { 21 writing-mode: vertical-lr; 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: red; 38 color: green; 39 left: auto; 40 position: absolute; 41 right: auto; 42 width: auto; 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, *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. 53 54 " 55 If all three of 'top', 'height', and 'bottom' are auto, set 'top' to the static position and apply rule number three below. 56 57 3. 'height' and 'bottom' are 'auto' and 'top' 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 'bottom' 58 " 59 60 'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width of containing block 61 62 So: 63 64 80px : left: auto: set to static position 65 + 66 0px : margin-left 67 + 68 0px : border-left-width 69 + 70 0px : padding-left 71 + 72 (based on the content) : width: auto 73 + 74 0px : padding-right 75 + 76 0px : border-right-width 77 + 78 0px : margin-right 79 + 80 (solve) : right: auto 81 ===================== 82 320px : width of containing block 83 84 gives us: 85 86 80px : left: auto: set to static position 87 + 88 0px : margin-left 89 + 90 0px : border-left-width 91 + 92 0px : padding-left 93 + 94 80px : (based on the content) : width: auto 95 + 96 0px : padding-right 97 + 98 0px : border-right-width 99 + 100 0px : margin-right 101 + 102 (solve) : right: auto 103 ===================== 104 320px : width of containing block 105 106 And so computed right value must be 160px . 107 */ 108 109 ]]></style> 110 111 </head> 112 113 <body> 114 115 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 116 117 <div id="containing-block">1 2 34<span>X</span></div> 118 119 </body> 120 </html>