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June 8, 2012 15:10
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jQuery Cycle Lite Plugin by M. Alsup
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/*! | |
* jQuery Cycle Lite Plugin | |
* http://malsup.com/jquery/cycle/lite/ | |
* Copyright (c) 2008-2012 M. Alsup | |
* Version: 1.6 (02-MAY-2012) | |
* Dual licensed under the MIT and GPL licenses: | |
* http://www.opensource.org/licenses/mit-license.php | |
* http://www.gnu.org/licenses/gpl.html | |
* Requires: jQuery v1.3.2 or later | |
*/ | |
;(function($) { | |
"use strict"; | |
var ver = 'Lite-1.6'; | |
$.fn.cycle = function(options) { | |
return this.each(function() { | |
options = options || {}; | |
if (this.cycleTimeout) clearTimeout(this.cycleTimeout); | |
this.cycleTimeout = 0; | |
this.cyclePause = 0; | |
var $cont = $(this); | |
var $slides = options.slideExpr ? $(options.slideExpr, this) : $cont.children(); | |
var els = $slides.get(); | |
if (els.length < 2) { | |
if (window.console) | |
console.log('terminating; too few slides: ' + els.length); | |
return; // don't bother | |
} | |
// support metadata plugin (v1.0 and v2.0) | |
var opts = $.extend({}, $.fn.cycle.defaults, options || {}, $.metadata ? $cont.metadata() : $.meta ? $cont.data() : {}); | |
var meta = $.isFunction($cont.data) ? $cont.data(opts.metaAttr) : null; | |
if (meta) | |
opts = $.extend(opts, meta); | |
opts.before = opts.before ? [opts.before] : []; | |
opts.after = opts.after ? [opts.after] : []; | |
opts.after.unshift(function(){ opts.busy=0; }); | |
// allow shorthand overrides of width, height and timeout | |
var cls = this.className; | |
opts.width = parseInt((cls.match(/w:(\d+)/)||[])[1], 10) || opts.width; | |
opts.height = parseInt((cls.match(/h:(\d+)/)||[])[1], 10) || opts.height; | |
opts.timeout = parseInt((cls.match(/t:(\d+)/)||[])[1], 10) || opts.timeout; | |
if ($cont.css('position') == 'static') | |
$cont.css('position', 'relative'); | |
if (opts.width) | |
$cont.width(opts.width); | |
if (opts.height && opts.height != 'auto') | |
$cont.height(opts.height); | |
var first = 0; | |
$slides.css({position: 'absolute', top:0}).each(function(i) { | |
$(this).css('z-index', els.length-i); | |
}); | |
$(els[first]).css('opacity',1).show(); // opacity bit needed to handle reinit case | |
if ($.browser.msie) els[first].style.removeAttribute('filter'); | |
if (opts.fit && opts.width) | |
$slides.width(opts.width); | |
if (opts.fit && opts.height && opts.height != 'auto') | |
$slides.height(opts.height); | |
if (opts.pause) | |
$cont.hover(function(){this.cyclePause=1;}, function(){this.cyclePause=0;}); | |
var txFn = $.fn.cycle.transitions[opts.fx]; | |
if (txFn) | |
txFn($cont, $slides, opts); | |
$slides.each(function() { | |
var $el = $(this); | |
this.cycleH = (opts.fit && opts.height) ? opts.height : $el.height(); | |
this.cycleW = (opts.fit && opts.width) ? opts.width : $el.width(); | |
}); | |
if (opts.cssFirst) | |
$($slides[first]).css(opts.cssFirst); | |
if (opts.timeout) { | |
// ensure that timeout and speed settings are sane | |
if (opts.speed.constructor == String) | |
opts.speed = {slow: 600, fast: 200}[opts.speed] || 400; | |
if (!opts.sync) | |
opts.speed = opts.speed / 2; | |
while((opts.timeout - opts.speed) < 250) | |
opts.timeout += opts.speed; | |
} | |
opts.speedIn = opts.speed; | |
opts.speedOut = opts.speed; | |
opts.slideCount = els.length; | |
opts.currSlide = first; | |
opts.nextSlide = 1; | |
// fire artificial events | |
var e0 = $slides[first]; | |
if (opts.before.length) | |
opts.before[0].apply(e0, [e0, e0, opts, true]); | |
if (opts.after.length > 1) | |
opts.after[1].apply(e0, [e0, e0, opts, true]); | |
if (opts.click && !opts.next) | |
opts.next = opts.click; | |
if (opts.next) | |
$(opts.next).unbind('click.cycle').bind('click.cycle', function(){return advance(els,opts,opts.rev?-1:1);}); | |
if (opts.prev) | |
$(opts.prev).unbind('click.cycle').bind('click.cycle', function(){return advance(els,opts,opts.rev?1:-1);}); | |
if (opts.timeout) | |
this.cycleTimeout = setTimeout(function() { | |
go(els,opts,0,!opts.rev); | |
}, opts.timeout + (opts.delay||0)); | |
}); | |
}; | |
function go(els, opts, manual, fwd) { | |
if (opts.busy) | |
return; | |
var p = els[0].parentNode, curr = els[opts.currSlide], next = els[opts.nextSlide]; | |
if (p.cycleTimeout === 0 && !manual) | |
return; | |
if (manual || !p.cyclePause) { | |
if (opts.before.length) | |
$.each(opts.before, function(i,o) { o.apply(next, [curr, next, opts, fwd]); }); | |
var after = function() { | |
if ($.browser.msie) | |
this.style.removeAttribute('filter'); | |
$.each(opts.after, function(i,o) { o.apply(next, [curr, next, opts, fwd]); }); | |
queueNext(opts); | |
}; | |
if (opts.nextSlide != opts.currSlide) { | |
opts.busy = 1; | |
$.fn.cycle.custom(curr, next, opts, after); | |
} | |
var roll = (opts.nextSlide + 1) == els.length; | |
opts.nextSlide = roll ? 0 : opts.nextSlide+1; | |
opts.currSlide = roll ? els.length-1 : opts.nextSlide-1; | |
} else { | |
queueNext(opts); | |
} | |
function queueNext(opts) { | |
if (opts.timeout) | |
p.cycleTimeout = setTimeout(function() { go(els,opts,0,!opts.rev); }, opts.timeout); | |
} | |
} | |
// advance slide forward or back | |
function advance(els, opts, val) { | |
var p = els[0].parentNode, timeout = p.cycleTimeout; | |
if (timeout) { | |
clearTimeout(timeout); | |
p.cycleTimeout = 0; | |
} | |
opts.nextSlide = opts.currSlide + val; | |
if (opts.nextSlide < 0) { | |
opts.nextSlide = els.length - 1; | |
} | |
else if (opts.nextSlide >= els.length) { | |
opts.nextSlide = 0; | |
} | |
go(els, opts, 1, val>=0); | |
return false; | |
} | |
$.fn.cycle.custom = function(curr, next, opts, cb) { | |
var $l = $(curr), $n = $(next); | |
$n.css(opts.cssBefore); | |
var fn = function() {$n.animate(opts.animIn, opts.speedIn, opts.easeIn, cb);}; | |
$l.animate(opts.animOut, opts.speedOut, opts.easeOut, function() { | |
$l.css(opts.cssAfter); | |
if (!opts.sync) | |
fn(); | |
}); | |
if (opts.sync) | |
fn(); | |
}; | |
$.fn.cycle.transitions = { | |
fade: function($cont, $slides, opts) { | |
$slides.not(':eq(0)').hide(); | |
opts.cssBefore = { opacity: 0, display: 'block' }; | |
opts.cssAfter = { display: 'none' }; | |
opts.animOut = { opacity: 0 }; | |
opts.animIn = { opacity: 1 }; | |
}, | |
fadeout: function($cont, $slides, opts) { | |
opts.before.push(function(curr,next,opts,fwd) { | |
$(curr).css('zIndex',opts.slideCount + (fwd === true ? 1 : 0)); | |
$(next).css('zIndex',opts.slideCount + (fwd === true ? 0 : 1)); | |
}); | |
$slides.not(':eq(0)').hide(); | |
opts.cssBefore = { opacity: 1, display: 'block', zIndex: 1 }; | |
opts.cssAfter = { display: 'none', zIndex: 0 }; | |
opts.animOut = { opacity: 0 }; | |
opts.animIn = { opacity: 1 }; | |
} | |
}; | |
$.fn.cycle.ver = function() { return ver; }; | |
// @see: http://malsup.com/jquery/cycle/lite/ | |
$.fn.cycle.defaults = { | |
animIn: {}, | |
animOut: {}, | |
fx: 'fade', | |
after: null, | |
before: null, | |
cssBefore: {}, | |
cssAfter: {}, | |
delay: 0, | |
fit: 0, | |
height: 'auto', | |
metaAttr: 'cycle', | |
next: null, | |
pause: false, | |
prev: null, | |
speed: 1000, | |
slideExpr: null, | |
sync: true, | |
timeout: 4000 | |
}; | |
})(jQuery); |
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