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// Check if supports 3D transforms
function has3d(){
var el = $('<p>')[0], $iframe = $('<iframe>'), has3d, t,
transforms = {
'webkitTransform': '-webkit-transform',
'OTransform': '-o-transform',
'msTransform': '-ms-transform',
'transform': 'transform'
};
// Add it to the body to get the computed style
// Sandbox it inside an iframe to avoid Android Browser quirks
$iframe.appendTo('body').contents().find('body').append( el );
for (t in transforms) {
if (el.style[t] !== undefined) {
el.style[t] = 'translate3d(1px,1px,1px)';
has3d = window.getComputedStyle(el).getPropertyValue(transforms[t]);
}
}
$iframe.remove();
return has3d !== undefined && has3d.length > 0 && has3d !== "none";
}
// Identify browser based on useragent string
(function( ua ) {
ua = ua.toLowerCase();
var match = /(chrome)[ \/]([\w.]+)/.exec( ua ) ||
/(webkit)[ \/]([\w.]+)/.exec( ua ) ||
/(opera)(?:.*version|)[ \/]([\w.]+)/.exec( ua ) ||
/(msie) ([\w.]+)/.exec( ua ) ||
ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec( ua ) ||
[];
var matched = {
browser: match[ 1 ] || "",
version: match[ 2 ] || "0"
};
browser = {};
if ( matched.browser ) {
browser[ matched.browser ] = true;
browser.version = matched.version;
}
// Chrome is Webkit, but Webkit is also Safari.
if ( browser.chrome ) {
browser.webkit = true;
} else if ( browser.webkit ) {
browser.safari = true;
}
$.browser = browser;
return browser;
})( navigator.userAgent );
// rAF shim
(function() {
var lastTime = 0;
var vendors = ['ms', 'moz', 'webkit', 'o'];
for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame']
|| window[vendors[x]+'CancelRequestAnimationFrame'];
}
if (!window.requestAnimationFrame)
window.requestAnimationFrame = function(callback, element) {
var currTime = new Date().getTime();
var timeToCall = Math.max(0, 16 - (currTime - lastTime));
var id = window.setTimeout(function() { callback(currTime + timeToCall); },
timeToCall);
lastTime = currTime + timeToCall;
return id;
};
if (!window.cancelAnimationFrame)
window.cancelAnimationFrame = function(id) {
clearTimeout(id);
};
}());
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