<!doctype html> <html> <head> <title>The line height calculation quirk</title> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <style> iframe { width:200px; height:20px; } </style> </head> <body> <div id=log></div> <iframe id=quirks></iframe> <iframe id=almost></iframe> <iframe id=standards></iframe> <script> setup({explicit_done:true}); var png = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg=="; var preload = new Image(); preload.src = png; onload = function() { var html = "<style id=style></style>"; var a_doctype = '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">'; var s_doctype = '<!DOCTYPE HTML>'; var q = document.getElementById('quirks').contentWindow; var a = document.getElementById('almost').contentWindow; var s = document.getElementById('standards').contentWindow; q.document.open(); q.document.write(html); q.document.close(); a.document.open(); a.document.write(a_doctype + html); a.document.close(); s.document.open(); s.document.write(s_doctype + html); s.document.close(); [q, a, s].forEach(function(win) { ['style', 'test', 'ref', 's_ref'].forEach(function(id) { Object.getPrototypeOf(win).__defineGetter__(id, function() { return win.document.getElementById(id); }); }); }); var tests = [ {style:'', body:'<div id=test><img src="{png}"></div><img id=ref src="{png}"><div id=s_ref>x</div>'}, {style:'', body:'<div id=test><img src="{png}"> <img src="{png}"></div><div id=ref>x</div><div id=s_ref>x</div>'}, {style:'', body:'<table><tr><td id=test><img src="{png}"><tr><td><img id=ref src="{png}"><tr><td id=s_ref>x</table>'}, {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>'}, {style:'', body:'<pre id=test><img src="{png}"></pre><img id=ref src="{png}"><pre id=s_ref>x</pre>'}, {style:'', body:'<pre id=test><img src="{png}"> </pre><pre id=ref>x</pre><pre id=s_ref>x</pre>'}, {style:'span { margin:1px }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref>x</div>'}, {style:'span { padding:1px 0 }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref></div>'}, {style:'span { margin:0 1px }', body:'<div id=test><span></span></div><div id=ref></div><div id=s_ref>x</div>'}, {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>'}, {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>'}, {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>'}, {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>'}, {style:'span { border-right:1px solid }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, {style:'span { border-left:1px solid }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, {style:'span { padding-right:1px }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, {style:'span { padding-left:1px }', body:'<div id=test><span></span></div><div id=ref>x</div><div id=s_ref>x</div>'}, {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." */ {style:'', body:'<div id=test><img src="{png}" border=1></div><img id=ref src="{png}" height=3><div id=s_ref>x</div>'}, {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>'}, {style:'iframe { height:1px }', body:'<div id=test><iframe></iframe></div><img id=ref src="{png}" height=5><div id=s_ref>x</div>'}, {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>'}, {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>'}, ]; tests.forEach(function(t) { test(function() { var style = t.style.replace(/\{png\}/g, png); var body = t.body.replace(/\{png\}/g, png); q.style.textContent = style; a.style.textContent = style; s.style.textContent = style; q.document.body.innerHTML = body; a.document.body.innerHTML = body; s.document.body.innerHTML = body; assert_equals(q.getComputedStyle(q.test).height, q.getComputedStyle(q.ref).height, 'quirks mode'); assert_equals(a.getComputedStyle(a.test).height, a.getComputedStyle(a.ref).height, 'almost standards mode'); assert_equals(s.getComputedStyle(s.test).height, s.getComputedStyle(s.s_ref).height, 'standards mode'); }, document.title+', '+t.style+t.body); }); done(); } </script> </body> </html>