line-height-calculation.html (5990B)
1 <!doctype html> 2 <html> 3 <head> 4 <title>The line height calculation quirk</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <style> iframe { width:200px; height:20px; } </style> 8 </head> 9 <body> 10 <div id=log></div> 11 <iframe id=quirks></iframe> 12 <iframe id=almost></iframe> 13 <iframe id=standards></iframe> 14 <script> 15 setup({explicit_done:true}); 16 17 var png = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg=="; 18 var preload = new Image(); 19 preload.src = png; 20 21 onload = function() { 22 var html = "<style id=style></style>"; 23 var a_doctype = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">'; 24 var s_doctype = '<!DOCTYPE HTML>'; 25 var q = document.getElementById('quirks').contentWindow; 26 var a = document.getElementById('almost').contentWindow; 27 var s = document.getElementById('standards').contentWindow; 28 q.document.open(); 29 q.document.write(html); 30 q.document.close(); 31 a.document.open(); 32 a.document.write(a_doctype + html); 33 a.document.close(); 34 s.document.open(); 35 s.document.write(s_doctype + html); 36 s.document.close(); 37 [q, a, s].forEach(function(win) { 38 ['style', 'test', 'ref', 's_ref'].forEach(function(id) { 39 Object.getPrototypeOf(win).__defineGetter__(id, function() { return win.document.getElementById(id); }); 40 }); 41 }); 42 43 var tests = [ 44 {style:'', body:'<div id=test><img src="{png}"></div><img id=ref src="{png}"><div id=s_ref>x</div>'}, 45 {style:'', body:'<div id=test><img src="{png}"> <img src="{png}"></div><div id=ref>x</div><div id=s_ref>x</div>'}, 46 {style:'', body:'<table><tr><td id=test><img src="{png}"><tr><td><img id=ref src="{png}"><tr><td id=s_ref>x</table>'}, 47 {style:'', body:'<table><tr><td id=test><img src="{png}"> <img src="{png}"><tr><td id=ref>x<tr><td id=s_ref>x</table>'}, 48 {style:'', body:'<pre id=test><img src="{png}"></pre><img id=ref src="{png}"><pre id=s_ref>x</pre>'}, 49 {style:'', body:'<pre id=test><img src="{png}"> </pre><pre id=ref>x</pre><pre id=s_ref>x</pre>'}, 50 {style:'span { margin:1px }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref>x</div>'}, 51 {style:'span { padding:1px 0 }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref></div>'}, 52 {style:'span { margin:0 1px }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref>x</div>'}, 53 {style:'span { margin:0 1px; padding:1px 0 }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref>x</div>'}, 54 {style:'span { border-width:1px 0; border-style:solid }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref></div>'}, 55 {style:'span { border-width:1px; border-style:solid none }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref></div>'}, 56 {style:'span { border-width:1px; border-style:solid hidden }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref></div>'}, 57 {style:'span { border-right:1px solid }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, 58 {style:'span { border-left:1px solid }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, 59 {style:'span { padding-right:1px }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, 60 {style:'span { padding-left:1px }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, 61 {style:'span { display:inline-block; height:1px }', body:'<div id=test><i><span></span> </i></div><span id=ref></span><div id=s_ref>x</div>'}, /* 16.6.1: "If a space (U+0020) at the end of a line has 'white-space' set to 'normal', 'nowrap', or 'pre-line', it is also removed." */ 62 {style:'', body:'<div id=test><img src="{png}" border=1></div><img id=ref src="{png}" height=3><div id=s_ref>x</div>'}, 63 {style:'#test img { padding:1px }', body:'<div id=test><img src="{png}"></div><img id=ref src="{png}" height=3><div id=s_ref>x</div>'}, 64 {style:'iframe { height:1px }', body:'<div id=test><iframe></iframe></div><img id=ref src="{png}" height=5><div id=s_ref>x</div>'}, 65 {style:'#test::before { content:"" } #test::before, span { border:solid }', body:'<div id=test></div><div id=ref><span>x</span></div><div id=s_ref><span>x</span></div>'}, 66 {style:'div { line-height: 0;} span { margin:0 1px; line-height: normal; }', body:'<div id=test>x<span></span></div><div id=ref>x</div><div id=s_ref>x<span>x</span></div>'}, 67 ]; 68 69 tests.forEach(function(t) { 70 test(function() { 71 var style = t.style.replace(/\{png\}/g, png); 72 var body = t.body.replace(/\{png\}/g, png); 73 q.style.textContent = style; 74 a.style.textContent = style; 75 s.style.textContent = style; 76 q.document.body.innerHTML = body; 77 a.document.body.innerHTML = body; 78 s.document.body.innerHTML = body; 79 80 assert_equals(q.getComputedStyle(q.test).height, 81 q.getComputedStyle(q.ref).height, 82 'quirks mode'); 83 assert_equals(a.getComputedStyle(a.test).height, 84 a.getComputedStyle(a.ref).height, 85 'almost standards mode'); 86 assert_equals(s.getComputedStyle(s.test).height, 87 s.getComputedStyle(s.s_ref).height, 88 'standards mode'); 89 }, document.title+', '+t.style+t.body); 90 }); 91 92 done(); 93 } 94 </script> 95 </body> 96 </html>