/*
jRumble v1.0 - http://jackrugile.com/jrumble
by Jack Rugile - http://jackrugile.com

To use this plugin:
	- Include jQuery and this file in your document
	- Apply jRumble with a selector:
		- $('#my-rumble-object').jrumble();

Options/Defaults (defaults in parentheses):
	rangeX: (2) - Set the horizontal rumble range (pixels)
	rangeY: (2) - Set the vertical rumble range (pixels)
	rangeRot: (1) - Set the rotation range (degrees)
	rumbleSpeed: (10) - Set the speed/frequency in milliseconds of the rumble (lower number = faster)
	rumbleEvent: ('hover') - Set the event that triggers the rumble (hover, click, mousedown, constant)
	posX: ('left') - If using jRumble on a fixed or absolute positioned element, choose 'left' or 'right' to match your CSS
	posY: ('top') - If using jRumble on a fixed or absolute positioned element, choose 'top' or 'bottom' to match your CSS

MIT License
-----------------------------------------------------------------------------
Copyright (c) 2011 Jack Rugile, http://jackrugile.com

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

(function($){
	$.fn.jrumble = function(options){
		
		// JRUMBLE OPTIONS
		//---------------------------------
		var defaults = {
			rangeX: 2,
			rangeY: 2,
			rangeRot: 1,
			rumbleSpeed: 6,
			rumbleEvent: 'hover',
			posX: 'left',
			posY: 'top'
		};

		var opt = $.extend(defaults, options);

		return this.each(function(){
			
			// VARIABLE DECLARATION
			//---------------------------------
			$obj = $(this);			
			var rumbleInterval;	
			var rangeX = opt.rangeX;
			var rangeY = opt.rangeY;
			var rangeRot = opt.rangeRot;
			rangeX = rangeX*2;
			rangeY = rangeY*2;
			rangeRot = rangeRot*2;
			var rumbleSpeed = opt.rumbleSpeed;			
			var objPosition = $obj.css('position');
			var objXrel = opt.posX;
			var objYrel = opt.posY;
			var objXmove;
			var objYmove;
			var inlineChange;
			
			// SET POSITION RELATION IF CHANGED
			//---------------------------------
			if(objXrel === 'left'){
				objXmove = parseInt($obj.css('left'),10);
			}
			if(objXrel === 'right'){
				objXmove = parseInt($obj.css('right'),10);
			}
			if(objYrel === 'top'){
				objYmove = parseInt($obj.css('top'),10);
			}
			if(objYrel === 'bottom'){
				objYmove = parseInt($obj.css('bottom'),10);
			}
			
			// RUMBLER FUNCTION
			//---------------------------------			
			function rumbler(elem) {				
				var randBool = Math.random();
				var randX = Math.floor(Math.random() * (rangeX+1)) -rangeX/2;
				var randY = Math.floor(Math.random() * (rangeY+1)) -rangeY/2;
				var randRot = Math.floor(Math.random() * (rangeRot+1)) -rangeRot/2;	
				
				// IF INLINE, MAKE INLINE-BLOCK FOR ROTATION
				//---------------------------------
				if(elem.css('display') === 'inline'){
					inlineChange = true;
					elem.css('display', 'inline-block')
				}
			
				// ENSURE MOVEMENT
				//---------------------------------			
				if(randX === 0 && rangeX !== 0){
					if(randBool < .5){
						randX = 1;
					}
					else {
						randX = -1;
					}
				}
				
				if(randY === 0 && rangeY !== 0){
					if(randBool < .5){
						randY = 1;
					}
					else {
						randY = -1;
					}
				}
				
				// RUMBLE BASED ON POSITION
				//---------------------------------
				if(objPosition === 'absolute'){
					elem.css({'position':'absolute','-webkit-transform': 'rotate('+randRot+'deg)', '-moz-transform': 'rotate('+randRot+'deg)', '-o-transform': 'rotate('+randRot+'deg)', 'transform': 'rotate('+randRot+'deg)'});
					elem.css(objXrel, objXmove+randX+'px');
					elem.css(objYrel, objYmove+randY+'px');
				}
				if(objPosition === 'fixed'){
					elem.css({'position':'fixed','-webkit-transform': 'rotate('+randRot+'deg)', '-moz-transform': 'rotate('+randRot+'deg)', '-o-transform': 'rotate('+randRot+'deg)', 'transform': 'rotate('+randRot+'deg)'});
					elem.css(objXrel, objXmove+randX+'px');
					elem.css(objYrel, objYmove+randY+'px');
				}
				if(objPosition === 'static' || objPosition === 'relative'){
					elem.css({'position':'relative','-webkit-transform': 'rotate('+randRot+'deg)', '-moz-transform': 'rotate('+randRot+'deg)', '-o-transform': 'rotate('+randRot+'deg)', 'transform': 'rotate('+randRot+'deg)'});
					elem.css(objXrel, randX+'px');
					elem.css(objYrel, randY+'px');
				}
			} // End rumbler function
			
			// EVENT TYPES (rumbleEvent)
			//---------------------------------	
			var resetRumblerCSS = {'position':objPosition,'-webkit-transform': 'rotate(0deg)', '-moz-transform': 'rotate(0deg)', '-o-transform': 'rotate(0deg)', 'transform': 'rotate(0deg)'};
			
			if(opt.rumbleEvent === 'hover'){
				$obj.hover(
					function() {
						var rumblee = $(this);
						rumbleInterval = setInterval(function() { rumbler(rumblee); }, rumbleSpeed);
					},
					function() {
						var rumblee = $(this);
						clearInterval(rumbleInterval);
						rumblee.css(resetRumblerCSS);
						rumblee.css(objXrel, objXmove+'px');
						rumblee.css(objYrel, objYmove+'px');
						if(inlineChange === true){
							rumblee.css('display','inline');
						}
					}
				);
			}
			
			if(opt.rumbleEvent === 'click'){
				$obj.toggle(function(){
					var rumblee = $(this);
					rumbleInterval = setInterval(function() { rumbler(rumblee); }, rumbleSpeed);
				}, function(){
					var rumblee = $(this);
					clearInterval(rumbleInterval);
					rumblee.css(resetRumblerCSS);
					rumblee.css(objXrel, objXmove+'px');
					rumblee.css(objYrel, objYmove+'px');
					if(inlineChange === true){
						rumblee.css('display','inline');
					}
				});
			}
			
			if(opt.rumbleEvent === 'mousedown'){
				$obj.bind({
					mousedown: function(){
						var rumblee = $(this);
						rumbleInterval = setInterval(function() { rumbler(rumblee); }, rumbleSpeed);
					}, 
					mouseup: function(){
						var rumblee = $(this);
						clearInterval(rumbleInterval);
						rumblee.css(resetRumblerCSS);
						rumblee.css(objXrel, objXmove+'px');
						rumblee.css(objYrel, objYmove+'px');
						if(inlineChange === true){
							rumblee.css('display','inline');
						}
					},
					mouseout: function(){
						var rumblee = $(this);
						clearInterval(rumbleInterval);
						rumblee.css(resetRumblerCSS);
						rumblee.css(objXrel, objXmove+'px');
						rumblee.css(objYrel, objYmove+'px');
						if(inlineChange === true){
							rumblee.css('display','inline');
						}
					}
				});
			}
			
			if(opt.rumbleEvent === 'constant'){
				var rumblee = $(this);
				rumbleInterval = setInterval(function() { rumbler(rumblee); }, rumbleSpeed);
			}
			
		});
	}; 
})(jQuery);