///////////////////////////////////////////////////////////////////////

// imageScroller (1.1), Copyright (C) 2008 - 2009 Max Kiusso

//

// Autor :		Max Kiusso - kiussoATgmailDOTcom

// Date :		2008 12 01
// Modified:	2009 11 23

//

// REQUIRES jQuery 1.2+ <http://jquery.com/>

//

// Features:

// 		This software provide to create a multidirectional image

//		scroller with mouse events

//

// Configuration:	$( "#div" ).imageScroller( {options} )

//					

//					options:	speed (millisecond)

//								loading (text)

//								direction (left, right, top, bottom)
//
// New in release 1.1:
//		- bug fix for preload images

///////////////////////////////////////////////////////////////////////



( function( $ ) {

	$.fn.imageScroller = function ( options ) {

		return this.each( function() {

			var $this = $( this );

			var loadImgs = 0;

			

			var opt = $.extend( 

				{ 

					  speed: "2000"

					, loading: "Loading images..." 

					, direction: "left"

				}

				, options || {}

			);

			

			$this.children().hide();

			$this.append(

				"<div style='clear:both; padding: 0px; margin: 0px;'>" + 

				"<div id='loading'>" + opt.loading + "</div>" + 

				"</div>"

			);

			

			$( "img" , $this ).each(
				function () {
					var img = new Image();
					var soc = $( this ).attr( 'src' );
					
					$( img ).load(
						function () {
							loadImgs++;
						}
					).attr( "src" , soc );
				}
			);

			

			var intVal = window.setInterval(

				function () {

					if ( loadImgs == $( "img" , $this ).length ) {

						window.clearInterval( intVal );

						$( "#loading" ).remove();

						$this.children().show();

						var totImg = 0;

			

						$.each(

							  $this.children( ":not(div)" )

							, function () {

								switch ( opt.direction ) {

									case 'left':

									case 'right':

										if ( $( this ).children().length ) {

											$( this ).width( $( this ).children( ":eq(0)" ).width() );

										}

										totImg += $( this ).width();

										break;

									case 'top':

									case 'bottom':

										$( this ).css( "display" , "block" );

										if ( $( this ).children().length ) {

											$( this ).height( $( this ).children( ":eq(0)" ).height() );

										}

										totImg += $( this ).height();

										break;

								}

								

								$( this ).css({

									  margin:  "0px"

									, padding: "0px"

									, clear:   "both"

								});

								

								$( this ).bind(

									  "mouseover"

									, function () {

										$( "div:eq(0)" , $this ).stop();

									}

								).bind(

									  "mouseout"

									, function () {

										scrollStart( $( "div:eq(0)" , $this ) , opt );

									}

								);

								

								$( "div:eq(0)" , $this ).append( $( this ) );

							}

						);

						

						switch ( opt.direction ) {

							case 'left':

								$( "div:eq(0)" , $this ).css( "width" , totImg + "px" );

								break;

							

							case 'right':

								$( "div:eq(0)" , $this ).css( "width" , totImg + "px" );

								$( "div:eq(0)" , $this ).css({

									marginLeft: -( totImg - $this.width() ) + "px"

								});

								break;

								

							case 'top':

								$( "div:eq(0)" , $this ).css( "height" , totImg + "px" );

								break;

								

							case 'bottom':

								$( "div:eq(0)" , $this ).css( "height" , totImg + "px" );

								$( "div:eq(0)" , $this ).css({

									marginTop: -( totImg - $this.height() ) + "px"

								});

								break;

						}

	

						scrollStart( $( "div:eq(0)" , $this ) , opt );

					}

				}

				, 100

			);

			

			function scrollStart ( $scroll , opt ) {

				switch ( opt.direction ) {

					case 'left':

						var pos = -( $scroll.children( ":eq(0)" ).width() );

						var spd = opt.speed - ( Math.abs ( parseInt( $scroll.css( "marginLeft" ) ) ) * ( opt.speed / $scroll.children( ":eq(0)" ).width() ) );

						break;

						

					case 'right':

						var pos = -( $scroll.width() - $scroll.parents( "div:eq(0)" ).width() ) + $scroll.children( ":last" ).width();

						var spd = opt.speed - ( ( $scroll.children( ":last" ).width() - ( Math.abs ( parseInt( $scroll.css( "marginLeft" ) ) ) - Math.abs ( pos ) ) ) * ( opt.speed / $scroll.children( ":last" ).width() ) );

						break;

						

					case 'top':

						var tos = -( $scroll.children( ":eq(0)" ).height() );

						var spd = opt.speed - ( Math.abs ( parseInt( $scroll.css( "marginTop" ) ) ) * ( opt.speed / $scroll.children( ":eq(0)" ).height() ) );

						break;

						

					case 'bottom':

						var tos = -( $scroll.height() - $scroll.parents( "div:eq(0)" ).height() ) + $scroll.children( ":last" ).height();

						var spd = opt.speed - ( ( $scroll.children( ":last" ).height() - ( Math.abs ( parseInt( $scroll.css( "marginTop" ) ) ) - Math.abs ( tos ) ) ) * ( opt.speed / $scroll.children( ":last" ).height() ) );

						break;

				}

				

				$scroll.animate(

					{

						  marginLeft: ( pos || "0" ) + "px"

						, marginTop: ( tos || "0" ) + "px"

					}

					, spd

					, "linear"

					, function () {

						switch ( opt.direction ) {

							case 'left':

								$scroll.append( $( this ).children( ":eq(0)" ) );

								$scroll.css( "marginLeft" , "0px" );

								break;

								

							case 'right':

								$scroll.prepend( $( this ).children( ":last" ) );

								$scroll.css( "marginLeft" , -( $scroll.width() - $scroll.parents( "div:eq(0)" ).width() ) + "px" );

								break;

								

							case 'top':

								$scroll.append( $( this ).children( ":eq(0)" ) );

								$scroll.css( "marginTop" , "0px" );

								break;

								

							case 'bottom':

								$scroll.prepend( $( this ).children( ":last" ) );

								$scroll.css( "marginTop" , -( $scroll.height() - $scroll.parents( "div:eq(0)" ).height() ) + "px" );

								break;

						}

						

						scrollStart( $scroll , opt );

					}

				);

			};

		});

	};

})(jQuery);