abs-pos-non-replaced-vrl-108.xht (3753B)
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: ltr' 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-vrl-002-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'ltr' and 'left', 'width' and 'right' are 'auto' and 'writing-mode' is 'vertical-rl', then set 'right' to the static position, the width is based on the content and then solve for 'left'." /> 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-3col-3row-320x320.png"); 22 color: transparent; 23 direction: ltr; 24 font: 80px/1 Ahem; 25 height: 320px; 26 position: relative; 27 width: 320px; 28 writing-mode: vertical-rl; 29 } 30 31 div#containing-block > span 32 { 33 background-color: red; 34 color: green; 35 left: auto; 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, *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. 50 51 " 52 If all three of 'top', 'height', and 'bottom' are auto, set 'top' to the static position and apply rule number three below. 53 54 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' 55 " 56 57 'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width of containing block 58 59 So: 60 61 80px : right: auto: set to static position 62 + 63 0px : margin-right 64 + 65 0px : border-right-width 66 + 67 0px : padding-right 68 + 69 (based on the content) : width: auto 70 + 71 0px : padding-left 72 + 73 0px : border-left-width 74 + 75 0px : margin-left 76 + 77 (solve) : left: auto 78 ===================== 79 320px : width of containing block 80 81 gives us: 82 83 80px : right: auto: set to static position 84 + 85 0px : margin-right 86 + 87 0px : border-right-width 88 + 89 0px : padding-right 90 + 91 80px : (based on the content) : width: auto 92 + 93 0px : padding-left 94 + 95 0px : border-left-width 96 + 97 0px : margin-left 98 + 99 (solve) : left: auto 100 ===================== 101 320px : width of containing block 102 103 And so computed left value must be 160px . 104 */ 105 106 ]]></style> 107 108 </head> 109 110 <body> 111 112 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 113 114 <div id="containing-block">1 2 34<span>X</span></div> 115 116 </body> 117 </html>