doc.silverstripe.org/sapphire/thirdparty/jquery-ui/jquery.effects.scale.js

/*
 * jQuery UI Effects Scale 1.8rc3
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Effects/Scale
 *
 * Depends:
 *	jquery.effects.core.js
 */
(function($) {

$.effects.puff = function(o) {
	return this.queue(function() {
		var elem = $(this),
			mode = $.effects.setMode(elem, o.options.mode || 'hide'),
			percent = parseInt(o.options.percent, 10) || 150,
			factor = percent / 100,
			original = { height: elem.height(), width: elem.width() };

		$.extend(o.options, {
			fade: true,
			mode: mode,
			percent: mode == 'hide' ? percent : 100,
			from: mode == 'hide'
				? original
				: {
					height: original.height * factor,
					width: original.width * factor
				}
		});

		elem.effect('scale', o.options, o.duration, o.callback);
		elem.dequeue();
	});
};

$.effects.scale = function(o) {

	return this.queue(function() {

		// Create element
		var el = $(this);

		// Set options
		var options = $.extend(true, {}, o.options);
		var mode = $.effects.setMode(el, o.options.mode || 'effect'); // Set Mode
		var percent = parseInt(o.options.percent,10) || (parseInt(o.options.percent,10) == 0 ? 0 : (mode == 'hide' ? 0 : 100)); // Set default scaling percent
		var direction = o.options.direction || 'both'; // Set default axis
		var origin = o.options.origin; // The origin of the scaling
		if (mode != 'effect') { // Set default origin and restore for show/hide
			options.origin = origin || ['middle','center'];
			options.restore = true;
		}
		var original = {height: el.height(), width: el.width()}; // Save original
		el.from = o.options.from || (mode == 'show' ? {height: 0, width: 0} : original); // Default from state

		// Adjust
		var factor = { // Set scaling factor
			y: direction != 'horizontal' ? (percent / 100) : 1,
			x: direction != 'vertical' ? (percent / 100) : 1
		};
		el.to = {height: original.height * factor.y, width: original.width * factor.x}; // Set to state

		if (o.options.fade) { // Fade option to support puff
			if (mode == 'show') {el.from.opacity = 0; el.to.opacity = 1;};
			if (mode == 'hide') {el.from.opacity = 1; el.to.opacity = 0;};
		};

		// Animation
		options.from = el.from; options.to = el.to; options.mode = mode;

		// Animate
		el.effect('size', options, o.duration, o.callback);
		el.dequeue();
	});

};

$.effects.size = function(o) {

	return this.queue(function() {

		// Create element
		var el = $(this), props = ['position','top','left','width','height','overflow','opacity'];
		var props1 = ['position','top','left','overflow','opacity']; // Always restore
		var props2 = ['width','height','overflow']; // Copy for children
		var cProps = ['fontSize'];
		var vProps = ['borderTopWidth', 'borderBottomWidth', 'paddingTop', 'paddingBottom'];
		var hProps = ['borderLeftWidth', 'borderRightWidth', 'paddingLeft', 'paddingRight'];

		// Set options
		var mode = $.effects.setMode(el, o.options.mode || 'effect'); // Set Mode
		var restore = o.options.restore || false; // Default restore
		var scale = o.options.scale || 'both'; // Default scale mode
		var origin = o.options.origin; // The origin of the sizing
		var original = {height: el.height(), width: el.width()}; // Save original
		el.from = o.options.from || original; // Default from state
		el.to = o.options.to || original; // Default to state
		// Adjust
		if (origin) { // Calculate baseline shifts
			var baseline = $.effects.getBaseline(origin, original);
			el.from.top = (original.height - el.from.height) * baseline.y;
			el.from.left = (original.width - el.from.width) * baseline.x;
			el.to.top = (original.height - el.to.height) * baseline.y;
			el.to.left = (original.width - el.to.width) * baseline.x;
		};
		var factor = { // Set scaling factor
			from: {y: el.from.height / original.height, x: el.from.width / original.width},
			to: {y: el.to.height / original.height, x: el.to.width / original.width}
		};
		if (scale == 'box' || scale == 'both') { // Scale the css box
			if (factor.from.y != factor.to.y) { // Vertical props scaling
				props = props.concat(vProps);
				el.from = $.effects.setTransition(el, vProps, factor.from.y, el.from);
				el.to = $.effects.setTransition(el, vProps, factor.to.y, el.to);
			};
			if (factor.from.x != factor.to.x) { // Horizontal props scaling
				props = props.concat(hProps);
				el.from = $.effects.setTransition(el, hProps, factor.from.x, el.from);
				el.to = $.effects.setTransition(el, hProps, factor.to.x, el.to);
			};
		};
		if (scale == 'content' || scale == 'both') { // Scale the content
			if (factor.from.y != factor.to.y) { // Vertical props scaling
				props = props.concat(cProps);
				el.from = $.effects.setTransition(el, cProps, factor.from.y, el.from);
				el.to = $.effects.setTransition(el, cProps, factor.to.y, el.to);
			};
		};
		$.effects.save(el, restore ? props : props1); el.show(); // Save & Show
		$.effects.createWrapper(el); // Create Wrapper
		el.css('overflow','hidden').css(el.from); // Shift

		// Animate
		if (scale == 'content' || scale == 'both') { // Scale the children
			vProps = vProps.concat(['marginTop','marginBottom']).concat(cProps); // Add margins/font-size
			hProps = hProps.concat(['marginLeft','marginRight']); // Add margins
			props2 = props.concat(vProps).concat(hProps); // Concat
			el.find("*[width]").each(function(){
				child = $(this);
				if (restore) $.effects.save(child, props2);
				var c_original = {height: child.height(), width: child.width()}; // Save original
				child.from = {height: c_original.height * factor.from.y, width: c_original.width * factor.from.x};
				child.to = {height: c_original.height * factor.to.y, width: c_original.width * factor.to.x};
				if (factor.from.y != factor.to.y) { // Vertical props scaling
					child.from = $.effects.setTransition(child, vProps, factor.from.y, child.from);
					child.to = $.effects.setTransition(child, vProps, factor.to.y, child.to);
				};
				if (factor.from.x != factor.to.x) { // Horizontal props scaling
					child.from = $.effects.setTransition(child, hProps, factor.from.x, child.from);
					child.to = $.effects.setTransition(child, hProps, factor.to.x, child.to);
				};
				child.css(child.from); // Shift children
				child.animate(child.to, o.duration, o.options.easing, function(){
					if (restore) $.effects.restore(child, props2); // Restore children
				}); // Animate children
			});
		};

		// Animate
		el.animate(el.to, { queue: false, duration: o.duration, easing: o.options.easing, complete: function() {
			if (el.to.opacity === 0) {
				el.css('opacity', el.from.opacity);
			}
			if(mode == 'hide') el.hide(); // Hide
			$.effects.restore(el, restore ? props : props1); $.effects.removeWrapper(el); // Restore
			if(o.callback) o.callback.apply(this, arguments); // Callback
			el.dequeue();
		}});

	});

};

})(jQuery);