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ui.slideflow.js
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ui.slideflow.js
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/*
* jQuery UI Slides Coverflow
*
* Coverflow-like slide widget
*
* Copyright (c) 2010 Ronan Dowling
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
*
* Depends:
* ui.slides.js
* ui.slidetabs.js
*/
(function($) {
$.widget("ui.slideflow", $.extend({}, $.ui.slidetabs.prototype, {
_init: function() {
this._slidesInit();
},
_preInit: function() {
},
_postInit: function() {
this.items.css('position', 'absolute').bind("click", function() {
self.activate(this);
return false;
});
this._tabsInit();
this.stageWidth = this.element.parent()[0].offsetWidth;
this.current = -1;
// Reset all the filter items so that IE can calculate the center properly.
this.refresh(1, 1, -1);
},
_height: function() {
return this.items.eq(0).height();
},
_width: function() {
return this.items.eq(0).width();
},
_offset: function() {
this.element.offset()
},
itemActivate: function(item, options) {
this.moveTo(item, options);
},
moveTo: function(item, options) {
duration = this.options.duration;
if (item != this.current) {
this.previous = this.current;
this.current = item;
if(typeof(this.previous) == 'undefined' || this.previous == this.current) return false; // Don't animate when clicking on the same item
var current = this.items.index(this.current);
var previous = this.items.index(this.current);
var self = this, to = Math.abs(previous-current) <=1 ? previous : current+(previous < current ? -1 : 1);
$.fx.step.flow = function(fx) {
self.refresh(fx.now, to, current);
};
var func = (config && options.animate) ? 'animate' : 'css';
this.wrapper.stop()[func]({
flow: 1,
left: self.center(this.current)
}, {
duration: duration,
easing: this.options.easing,
complete: function() {self.refresh(1, to, current);} // Make sure the animation completes entirely.
});
}
},
center: function(item) {
var pos = -(this.width * this.options.off_scale * this.options.spacing) * item + (this.stageWidth / 2) - (this.items.eq(item).width() / 2);
return pos;
},
refresh: function(state,from,to) {
var self = this, offset = null;
this.items.each(function(i) {
var side = (i == to && from-to < 0 ) || i-to > 0 ? "left" : "right";
var mod = i == to ? (1-state) : ( i == from ? state : 1 );
var scale = ((1-mod) * self.options.on_scale) + (mod * self.options.off_scale);
var angle = ((1-mod) * self.options.on_angle) + (mod * self.options.off_angle);
var alpha = ((1-mod) * self.options.on_alpha) + (mod * self.options.off_alpha);
angle = (side == "right" ? -angle : angle);
// Move all the items in based on how much they've been scaled down
var offset = i * self.width * self.options.off_scale * self.options.spacing;
// Add a clearance gap for the larger center item
var clearance = ((self.width/2) - ((self.width/2) * self.options.off_scale)) * self.options.clearance * mod;
offset += side == "right" ? -clearance : clearance;
// Set the z-index based on distance from the current item.
var z = self.items.length + (side == "left" ? to-i : i-to);
// Make sure the previous item stays in front until halfway through the transition.
z += mod < .5 ? 2 : 0;
if ($.browser.msie) {
if (this.filters.length) {
this.filters.item(0).M11 = scale;
this.filters.item(0).M12 = 0;
this.filters.item(0).M21 = angle * scale;
this.filters.item(0).M22 = scale;
this.filters.item(0).Dx = self.width/2 * (1-scale);
this.filters.item(0).Dy = self.height/2 * (1-scale) * (1-angle/2);
this.filters.item(1).opacity = alpha * 100;
}
$(this).css({
left: offset,
zIndex: z
});
}
else {
// Only apply the transform if needed.
var transform = 'none';
if (angle != 0 || scale != 1) {
transform = "matrix(1,"+angle+",0,1,0,0) scale("+scale+")";
}
$(this).css({
webkitTransform: transform,
MozTransform: transform,
transform: transform,
left: offset,
zIndex: z,
opacity: alpha
});
}
});
},
/*
hash: function(item) {
return '#' + ($(item).attr('href')).replace(window.location.protocol + '//' + window.location.host, '').replace('#', '');
}
*/
}));
$.extend($.ui.slidetabs, {
getter: "serialize toArray",
eventPrefix: "slide",
defaults: {
animate: true,
duration: 500,
on_angle: 0,
off_angle: .3,
on_scale: 1.0,
off_scale: .6,
off_alpha: .8,
on_alpha: 1.0,
clearance: .8,
spacing: .3,
}
});
})(jQuery);