abs-pos-non-replaced-vlr-003.xht (3883B)
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 'top', 'height' and 'bottom' 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-width" title="10.3.7 Absolutely positioned, non-replaced elements" /> 12 <link rel="match" href="abs-pos-non-replaced-vlr-003-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'ltr' and 'top', 'height' and 'bottom' are 'auto', then set 'top' to the static position, then the height is based on the content and then solve for 'bottom'." /> 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-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-lr; 29 } 30 31 div#containing-block > span 32 { 33 background-color: red; 34 bottom: auto; 35 color: green; 36 height: auto; 37 position: absolute; 38 top: auto; 39 } 40 41 /* 42 " 43 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. 44 " 45 7.1 Principles of Layout in Vertical Writing Modes 46 http://www.w3.org/TR/css-writing-modes-3/#vertical-layout 47 48 So here, *-top and *-bottom properties are input into the §10.3.7 algorithms where *-top properties refer to *-left properties in the layout rules and where *-bottom properties refer to *-right properties in the layout rules. 49 50 " 51 If all three of 'left', 'width', and 'right' are 'auto': First set any 'auto' values for 'margin-left' and 'margin-right' to 0. Then, if the 'direction' property of the element establishing the static-position containing block is 'ltr' set 'left' to the static position and apply rule number three below; otherwise, set 'right' to the static position and apply rule number one below. 52 53 3. 'width' and 'right' are 'auto' and 'left' is not 'auto', then the width is shrink-to-fit . Then solve for 'right' 54 " 55 56 'top' + 'margin-top' + 'border-top-width' + 'padding-top' + 'height' + 'padding-bottom' + 'border-bottom-width' + 'margin-bottom' + 'bottom' = height of containing block 57 58 So: 59 60 160px : top: auto: set to static position 61 + 62 0px : margin-top 63 + 64 0px : border-top-width 65 + 66 0px : padding-top 67 + 68 (based on the content) : height: auto 69 + 70 0px : padding-bottom 71 + 72 0px : border-bottom-width 73 + 74 0px : margin-bottom 75 + 76 (solve) : bottom: auto 77 ===================== 78 320px : height of containing block 79 80 gives us: 81 82 160px : top: auto: set to static position 83 + 84 0px : margin-top 85 + 86 0px : border-top-width 87 + 88 0px : padding-top 89 + 90 80px : (based on the content) : height: auto 91 + 92 0px : padding-bottom 93 + 94 0px : border-bottom-width 95 + 96 0px : margin-bottom 97 + 98 (solve) : bottom: auto 99 ===================== 100 320px : height of containing block 101 102 And so computed bottom value must be 80px . 103 */ 104 105 ]]></style> 106 107 </head> 108 109 <body> 110 111 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 112 113 <div id="containing-block">1 2 34<span>X</span></div> 114 115 </body> 116 </html>