FOSDEM-2025-keynote/lib/js/extra/headjs/dist/0.97a/head.css3.js

425 lines
11 KiB
JavaScript

/**!
Head JS The only script in your <HEAD>
Copyright Tero Piirainen (tipiirai)
License MIT / http://bit.ly/mit-license
Version 0.97a
http://headjs.com
*/
; (function (win, undefined) {
"use strict";
var doc = win.document,
nav = win.navigator,
loc = win.location,
html = doc.documentElement,
klass = [],
conf = {
screens: [320, 480, 640, 768, 1024, 1280, 1440, 1680, 1920],
section: "-section",
page : "-page",
head : "head"
};
if (win.head_conf) {
for (var item in win.head_conf) {
if (win.head_conf[item] !== undefined) {
conf[item] = win.head_conf[item];
}
}
}
function pushClass(name) {
klass[klass.length] = name;
}
function removeClass(name) {
var re = new RegExp("\\b" + name + "\\b");
html.className = html.className.replace(re, '');
}
function each(arr, fn) {
for (var i = 0, l = arr.length; i < l; i++) {
fn.call(arr, arr[i], i);
}
}
// API
var api = win[conf.head] = function () {
api.ready.apply(null, arguments);
};
api.feature = function (key, enabled, queue) {
// internal: apply all classes
if (!key) {
html.className += ' ' + klass.join(' ');
klass = [];
return api;
}
if (Object.prototype.toString.call(enabled) === '[object Function]') {
enabled = enabled.call();
}
pushClass((enabled ? '' : 'no-') + key);
api[key] = !!enabled;
// apply class to HTML element
if (!queue) {
removeClass('no-' + key);
removeClass(key);
api.feature();
}
return api;
};
// no queue here, so we can remove any eventual pre-existing no-js class
api.feature("js", true);
// browser type & version
var ua = nav.userAgent.toLowerCase(),
mobile = /mobile|midp/.test(ua);
// useful for enabling/disabling feature (we can consider a desktop navigator to have more cpu/gpu power)
api.feature("mobile" , mobile , true);
api.feature("desktop", !mobile, true);
api.feature("touch" , 'ontouchstart' in win, true);
// http://www.zytrax.com/tech/web/browser_ids.htm
// http://www.zytrax.com/tech/web/mobile_ids.html
ua = /(chrome|firefox)[ \/]([\w.]+)/.exec(ua) || // Chrome & Firefox
/(iphone|ipad|ipod)(?:.*version)?[ \/]([\w.]+)/.exec(ua) || // Mobile IOS
/(android)(?:.*version)?[ \/]([\w.]+)/.exec(ua) || // Mobile Webkit
/(webkit|opera)(?:.*version)?[ \/]([\w.]+)/.exec(ua) || // Safari & Opera
/(msie) ([\w.]+)/.exec(ua) || [];
var browser = ua[1],
version = parseFloat(ua[2]),
start = 0,
stop = 0;
switch (browser) {
case 'msie':
browser = 'ie';
version = doc.documentMode || version;
start = 6;
stop = 10;
break;
// Add/remove extra tests here
case 'chrome':
start = 8;
stop = 22;
break;
case 'firefox':
browser = 'ff';
start = 3;
stop = 17;
break;
case 'ipod':
case 'ipad':
case 'iphone':
browser = 'ios';
start = 3;
stop = 6;
break;
case 'android':
start = 2;
stop = 4;
break;
case 'webkit':
browser = 'safari';
start = 9;
stop = 12;
break;
case 'opera':
start = 9;
stop = 12;
break;
}
// name can be used further on for various tasks, like font-face detection in css3.js
api.browser = {
name : browser,
version: version
};
api.browser[browser] = true;
// add supported, not supported classes
var supported = ['ie'];
//var supported = ['ie', 'chrome', 'ff', 'ios', 'android', 'safari', 'opera'];
each(supported, function (name) {
if (name === browser) {
pushClass(name);
}
else {
pushClass("no-" + name);
}
});
for (var v = start; v <= stop; v++) {
if (version < v) {
pushClass("lt-" + browser + v);
}
}
// IE lt9 specific
if (browser === "ie" && version < 9) {
// HTML5 support : you still need to add html5 css initialization styles to your site
// See: assets/html5.css
each("abbr|article|aside|audio|canvas|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video".split("|"), function (el) {
doc.createElement(el);
});
}
// CSS "router"
each(loc.pathname.split("/"), function (el, i) {
if (this.length > 2 && this[i + 1] !== undefined) {
if (i) {
pushClass(this.slice(1, i + 1).join("-").toLowerCase() + conf.section);
}
} else {
// pageId
var id = el || "index", index = id.indexOf(".");
if (index > 0) {
id = id.substring(0, index);
}
html.id = id.toLowerCase() + conf.page;
// on root?
if (!i) {
pushClass("root" + conf.section);
}
}
});
// basic screen info
api.screen = {
height: win.screen.height,
width : win.screen.width
};
// screen resolution: w-100, lt-480, lt-1024 ...
function screenSize() {
// Viewport width
var iw = win.innerWidth || html.clientWidth,
ow = win.outerWidth || win.screen.width;
api.screen['innerWidth'] = iw;
api.screen['outerWidth'] = ow;
// START old code
var w = win.outerWidth || html.clientWidth;
// remove earlier widths
html.className = html.className.replace(/ (w|lt|portrait|no-portrait|landscape|no-landscape)-\d+/g, "");
// add new ones
pushClass("w-" + Math.round(w / 100) * 100);
each(conf.screens, function (width) {
if (w <= width) {
pushClass("lt-" + width);
}
});
// END old code
// Viewport height
var ih = win.innerHeight || html.clientHeight,
oh = win.outerHeight || win.screen.height;
api.screen['innerHeight'] = ih;
api.screen['outerHeight'] = oh;
// no need for onChange event to detect this
api.feature("portrait" , (ih > iw));
api.feature("landscape", (ih < iw));
}
screenSize();
// Throttle navigators from triggering too many resize events
var resizeId = 0;
function onResize() {
win.clearTimeout(resizeId);
resizeId = win.setTimeout(screenSize, 100);
}
// Manually attach, as to not overwrite existing handler
if (win.addEventListener) {
win.addEventListener("resize", onResize, false);
} else {
win.attachEvent("onresize", onResize);
}
})(window);
/**
Head JS The only script in your <HEAD>
Copyright Tero Piirainen (tipiirai)
License MIT / http://bit.ly/mit-license
Version 0.97a
http://headjs.com
*/
;(function(win, undefined) {
"use strict";
var doc = win.document,
nav = win.navigator,
/*
To add a new test:
head.feature("video", function() {
var tag = document.createElement('video');
return !!tag.canPlayType;
});
Good place to grab more tests
https://github.com/Modernizr/Modernizr/blob/master/modernizr.js
*/
/* CSS modernizer */
el = doc.createElement("i"),
style = el.style,
prefs = ' -o- -moz- -ms- -webkit- -khtml- '.split(' '),
domPrefs = 'Webkit Moz O ms Khtml'.split(' '),
head_var = win.head_conf && win.head_conf.head || "head",
api = win[head_var];
// Thanks Paul Irish!
function testProps(props) {
for (var i in props) {
if (style[props[i]] !== undefined) {
return true;
}
}
}
function testAll(prop) {
var camel = prop.charAt(0).toUpperCase() + prop.substr(1),
props = (prop + ' ' + domPrefs.join(camel + ' ') + camel).split(' ');
return !!testProps(props);
}
var tests = {
gradient: function() {
var s1 = 'background-image:',
s2 = 'gradient(linear,left top,right bottom,from(#9f9),to(#fff));',
s3 = 'linear-gradient(left top,#eee,#fff);';
style.cssText = (s1 + prefs.join(s2 + s1) + prefs.join(s3 + s1)).slice(0,-s1.length);
return !!style.backgroundImage;
},
rgba: function() {
style.cssText = "background-color:rgba(0,0,0,0.5)";
return !!style.backgroundColor;
},
opacity: function() {
return el.style.opacity === "";
},
textshadow: function() {
return style.textShadow === '';
},
multiplebgs: function() {
style.cssText = "background:url(//:),url(//:),red url(//:)";
return new RegExp("(url\\s*\\(.*?){3}").test(style.background);
},
boxshadow: function() {
return testAll("boxShadow");
},
borderimage: function() {
return testAll("borderImage");
},
borderradius: function() {
return testAll("borderRadius");
},
cssreflections: function() {
return testAll("boxReflect");
},
csstransforms: function() {
return testAll("transform");
},
csstransitions: function() {
return testAll("transition");
},
/*
font-face support. Uses browser sniffing but is synchronous.
http://paulirish.com/2009/font-face-feature-detection/
*/
fontface: function() {
var ua = navigator.userAgent, parsed;
if (/*@cc_on@if(@_jscript_version>=5)!@end@*/0) {
return true;
}
if (parsed = ua.match(/Chrome\/(\d+\.\d+\.\d+\.\d+)/)) {
return parsed[1] >= '4.0.249.4' || 1 * parsed[1].split(".")[0] > 5;
}
if ((parsed = ua.match(/Safari\/(\d+\.\d+)/)) && !/iPhone/.test(ua)) {
return parsed[1] >= '525.13';
}
if (/Opera/.test({}.toString.call(window.opera))) {
return opera.version() >= '10.00';
}
if (parsed = ua.match(/rv:(\d+\.\d+\.\d+)[^b].*Gecko\//)) {
return parsed[1] >= '1.9.1';
}
return false;
}
};
// queue features
for (var key in tests) {
if (tests[key]) {
api.feature(key, tests[key].call(), true);
}
}
// enable features at once
api.feature();
})(window);