Alessandro Molina avatar Alessandro Molina committed 236dbc3

Custom lightbox

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photos/public/js/jquery.lightbox-0.5.js

+/**
+ * jQuery lightBox plugin
+ * This jQuery plugin was inspired and based on Lightbox 2 by Lokesh Dhakar (http://www.huddletogether.com/projects/lightbox2/)
+ * and adapted to me for use like a plugin from jQuery.
+ * @name jquery-lightbox-0.5.js
+ * @author Leandro Vieira Pinho - http://leandrovieira.com
+ * @version 0.5
+ * @date April 11, 2008
+ * @category jQuery plugin
+ * @copyright (c) 2008 Leandro Vieira Pinho (leandrovieira.com)
+ * @license CCAttribution-ShareAlike 2.5 Brazil - http://creativecommons.org/licenses/by-sa/2.5/br/deed.en_US
+ * @example Visit http://leandrovieira.com/projects/jquery/lightbox/ for more informations about this jQuery plugin
+ */
+
+// Offering a Custom Alias suport - More info: http://docs.jquery.com/Plugins/Authoring#Custom_Alias
+(function($) {
+	/**
+	 * $ is an alias to jQuery object
+	 *
+	 */
+	$.fn.lightBox = function(settings) {
+		// Settings to configure the jQuery lightBox plugin how you like
+		settings = jqPhoto.extend({
+			// Configuration related to overlay
+			overlayBgColor: 		'#000',		// (string) Background color to overlay; inform a hexadecimal value like: #RRGGBB. Where RR, GG, and BB are the hexadecimal values for the red, green, and blue values of the color.
+			overlayOpacity:			0.8,		// (integer) Opacity value to overlay; inform: 0.X. Where X are number from 0 to 9
+			// Configuration related to navigation
+			fixedNavigation:		false,		// (boolean) Boolean that informs if the navigation (next and prev button) will be fixed or not in the interface.
+			// Configuration related to images
+			imageLoading:			'images/lightbox-ico-loading.gif',		// (string) Path and the name of the loading icon
+			imageBtnPrev:			'images/lightbox-btn-prev.gif',			// (string) Path and the name of the prev button image
+			imageBtnNext:			'images/lightbox-btn-next.gif',			// (string) Path and the name of the next button image
+			imageBtnClose:			'images/lightbox-btn-close.gif',		// (string) Path and the name of the close btn
+			imageBlank:				'images/lightbox-blank.gif',			// (string) Path and the name of a blank image (one pixel)
+			// Configuration related to container image box
+			containerBorderSize:	10,			// (integer) If you adjust the padding in the CSS for the container, #lightbox-container-image-box, you will need to update this value
+			containerResizeSpeed:	400,		// (integer) Specify the resize duration of container image. These number are miliseconds. 400 is default.
+			// Configuration related to texts in caption. For example: Image 2 of 8. You can alter either "Image" and "of" texts.
+			txtImage:				'Image',	// (string) Specify text "Image"
+			txtOf:					'of',		// (string) Specify text "of"
+			// Configuration related to keyboard navigation
+			keyToClose:				'c',		// (string) (c = close) Letter to close the jQuery lightBox interface. Beyond this letter, the letter X and the SCAPE key is used to.
+			keyToPrev:				'p',		// (string) (p = previous) Letter to show the previous image
+			keyToNext:				'n',		// (string) (n = next) Letter to show the next image.
+			// Don�t alter these variables in any way
+			imageArray:				[],
+			activeImage:			0
+		},settings);
+		// Caching the jQuery object with all elements matched
+		var jQueryMatchedObj = this; // This, in this context, refer to jQuery object
+		/**
+		 * Initializing the plugin calling the start function
+		 *
+		 * @return boolean false
+		 */
+		function _initialize() {
+			_start(this,jQueryMatchedObj); // This, in this context, refer to object (link) which the user have clicked
+			return false; // Avoid the browser following the link
+		}
+		/**
+		 * Start the jQuery lightBox plugin
+		 *
+		 * @param object objClicked The object (link) whick the user have clicked
+		 * @param object jQueryMatchedObj The jQuery object with all elements matched
+		 */
+		function _start(objClicked,jQueryMatchedObj) {
+			// Hime some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
+			$('embed, object, select').css({ 'visibility' : 'hidden' });
+			// Call the function to create the markup structure; style some elements; assign events in some elements.
+			_set_interface();
+			// Unset total images in imageArray
+			settings.imageArray.length = 0;
+			// Unset image active information
+			settings.activeImage = 0;
+			// We have an image set? Or just an image? Let�s see it.
+			if ( jQueryMatchedObj.length == 1 ) {
+				settings.imageArray.push(new Array(objClicked.getAttribute('href'),objClicked.getAttribute('title')));
+			} else {
+				// Add an Array (as many as we have), with href and title atributes, inside the Array that storage the images references		
+				for ( var i = 0; i < jQueryMatchedObj.length; i++ ) {
+					settings.imageArray.push(new Array(jQueryMatchedObj[i].getAttribute('href'),jQueryMatchedObj[i].getAttribute('title')));
+				}
+			}
+			while ( settings.imageArray[settings.activeImage][0] != objClicked.getAttribute('href') ) {
+				settings.activeImage++;
+			}
+			// Call the function that prepares image exibition
+			_set_image_to_view();
+		}
+		/**
+		 * Create the jQuery lightBox plugin interface
+		 *
+		 * The HTML markup will be like that:
+			<div id="jquery-overlay"></div>
+			<div id="jquery-lightbox">
+				<div id="lightbox-container-image-box">
+					<div id="lightbox-container-image">
+						<img src="../fotos/XX.jpg" id="lightbox-image">
+						<div id="lightbox-nav">
+							<a href="#" id="lightbox-nav-btnPrev"></a>
+							<a href="#" id="lightbox-nav-btnNext"></a>
+						</div>
+						<div id="lightbox-loading">
+							<a href="#" id="lightbox-loading-link">
+								<img src="../images/lightbox-ico-loading.gif">
+							</a>
+						</div>
+					</div>
+				</div>
+				<div id="lightbox-container-image-data-box">
+					<div id="lightbox-container-image-data">
+						<div id="lightbox-image-details">
+							<span id="lightbox-image-details-caption"></span>
+							<span id="lightbox-image-details-currentNumber"></span>
+						</div>
+						<div id="lightbox-secNav">
+							<a href="#" id="lightbox-secNav-btnClose">
+								<img src="../images/lightbox-btn-close.gif">
+							</a>
+						</div>
+					</div>
+				</div>
+			</div>
+		 *
+		 */
+		function _set_interface() {
+			// Apply the HTML markup into body tag
+			$('body').append('<div id="jquery-overlay"></div><div id="jquery-lightbox"><div id="lightbox-container-image-box"><div id="lightbox-container-image"><img id="lightbox-image"><div style="" id="lightbox-nav"><a href="#" id="lightbox-nav-btnPrev"></a><a href="#" id="lightbox-nav-btnNext"></a></div><div id="lightbox-loading"><a href="#" id="lightbox-loading-link"><img src="' + settings.imageLoading + '"></a></div></div></div><div id="lightbox-container-image-data-box"><div id="lightbox-container-image-data"><div id="lightbox-image-details"><span id="lightbox-image-details-caption"></span><span id="lightbox-image-details-currentNumber"></span></div><div id="lightbox-secNav"><a href="#" id="lightbox-secNav-btnClose"><img src="' + settings.imageBtnClose + '"></a></div></div></div></div>');	
+			// Get page sizes
+			var arrPageSizes = ___getPageSize();
+			// Style overlay and show it
+			$('#jquery-overlay').css({
+				backgroundColor:	settings.overlayBgColor,
+				opacity:			settings.overlayOpacity,
+				width:				arrPageSizes[0],
+				height:				arrPageSizes[1]
+			}).fadeIn();
+			// Get page scroll
+			var arrPageScroll = ___getPageScroll();
+			// Calculate top and left offset for the jquery-lightbox div object and show it
+			$('#jquery-lightbox').css({
+				top:	arrPageScroll[1] + (arrPageSizes[3] / 10),
+				left:	arrPageScroll[0]
+			}).show();
+			// Assigning click events in elements to close overlay
+			$('#jquery-overlay,#jquery-lightbox').click(function() {
+				_finish();									
+			});
+			// Assign the _finish function to lightbox-loading-link and lightbox-secNav-btnClose objects
+			$('#lightbox-loading-link,#lightbox-secNav-btnClose').click(function() {
+				_finish();
+				return false;
+			});
+			// If window was resized, calculate the new overlay dimensions
+			$(window).resize(function() {
+				// Get page sizes
+				var arrPageSizes = ___getPageSize();
+				// Style overlay and show it
+				$('#jquery-overlay').css({
+					width:		arrPageSizes[0],
+					height:		arrPageSizes[1]
+				});
+				// Get page scroll
+				var arrPageScroll = ___getPageScroll();
+				// Calculate top and left offset for the jquery-lightbox div object and show it
+				$('#jquery-lightbox').css({
+					top:	arrPageScroll[1] + (arrPageSizes[3] / 10),
+					left:	arrPageScroll[0]
+				});
+			});
+		}
+		/**
+		 * Prepares image exibition; doing a image�s preloader to calculate it�s size
+		 *
+		 */
+		function _set_image_to_view() { // show the loading
+			// Show the loading
+			$('#lightbox-loading').show();
+			if ( settings.fixedNavigation ) {
+				$('#lightbox-image,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
+			} else {
+				// Hide some elements
+				$('#lightbox-image,#lightbox-nav,#lightbox-nav-btnPrev,#lightbox-nav-btnNext,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
+			}
+			// Image preload process
+			var objImagePreloader = new Image();
+			objImagePreloader.onload = function() {
+				$('#lightbox-image').attr('src',settings.imageArray[settings.activeImage][0]);
+				// Perfomance an effect in the image container resizing it
+				_resize_container_image_box(objImagePreloader.width,objImagePreloader.height);
+				//	clear onLoad, IE behaves irratically with animated gifs otherwise
+				objImagePreloader.onload=function(){};
+			};
+			objImagePreloader.src = settings.imageArray[settings.activeImage][0];
+		};
+		/**
+		 * Perfomance an effect in the image container resizing it
+		 *
+		 * @param integer intImageWidth The image�s width that will be showed
+		 * @param integer intImageHeight The image�s height that will be showed
+		 */
+		function _resize_container_image_box(intImageWidth,intImageHeight) {
+			// Get current width and height
+			var intCurrentWidth = $('#lightbox-container-image-box').width();
+			var intCurrentHeight = $('#lightbox-container-image-box').height();
+			// Get the width and height of the selected image plus the padding
+			var intWidth = (intImageWidth + (settings.containerBorderSize * 2)); // Plus the image�s width and the left and right padding value
+			var intHeight = (intImageHeight + (settings.containerBorderSize * 2)); // Plus the image�s height and the left and right padding value
+			// Diferences
+			var intDiffW = intCurrentWidth - intWidth;
+			var intDiffH = intCurrentHeight - intHeight;
+			// Perfomance the effect
+			$('#lightbox-container-image-box').animate({ width: intWidth, height: intHeight },settings.containerResizeSpeed,function() { _show_image(); });
+			if ( ( intDiffW == 0 ) && ( intDiffH == 0 ) ) {
+				if ( $.browser.msie ) {
+					___pause(250);
+				} else {
+					___pause(100);	
+				}
+			} 
+			$('#lightbox-container-image-data-box').css({ width: intImageWidth });
+			$('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ height: intImageHeight + (settings.containerBorderSize * 2) });
+		};
+		/**
+		 * Show the prepared image
+		 *
+		 */
+		function _show_image() {
+			$('#lightbox-loading').hide();
+			$('#lightbox-image').fadeIn(function() {
+				_show_image_data();
+				_set_navigation();
+			});
+			_preload_neighbor_images();
+		};
+		/**
+		 * Show the image information
+		 *
+		 */
+		function _show_image_data() {
+			$('#lightbox-container-image-data-box').slideDown('fast');
+			$('#lightbox-image-details-caption').hide();
+			if ( settings.imageArray[settings.activeImage][1] ) {
+				$('#lightbox-image-details-caption').html(settings.imageArray[settings.activeImage][1]).show();
+			}
+			// If we have a image set, display 'Image X of X'
+			if ( settings.imageArray.length > 1 ) {
+				$('#lightbox-image-details-currentNumber').html(settings.txtImage + ' ' + ( settings.activeImage + 1 ) + ' ' + settings.txtOf + ' ' + settings.imageArray.length).show();
+			}		
+		}
+		/**
+		 * Display the button navigations
+		 *
+		 */
+		function _set_navigation() {
+			$('#lightbox-nav').show();
+
+			// Instead to define this configuration in CSS file, we define here. And it�s need to IE. Just.
+			$('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
+			
+			// Show the prev button, if not the first image in set
+			if ( settings.activeImage != 0 ) {
+				if ( settings.fixedNavigation ) {
+					$('#lightbox-nav-btnPrev').css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' })
+						.unbind()
+						.bind('click',function() {
+							settings.activeImage = settings.activeImage - 1;
+							_set_image_to_view();
+							return false;
+						});
+				} else {
+					// Show the images button for Next buttons
+					$('#lightbox-nav-btnPrev').unbind().hover(function() {
+						$(this).css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' });
+					},function() {
+						$(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
+					}).show().bind('click',function() {
+						settings.activeImage = settings.activeImage - 1;
+						_set_image_to_view();
+						return false;
+					});
+				}
+			}
+			
+			// Show the next button, if not the last image in set
+			if ( settings.activeImage != ( settings.imageArray.length -1 ) ) {
+				if ( settings.fixedNavigation ) {
+					$('#lightbox-nav-btnNext').css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' })
+						.unbind()
+						.bind('click',function() {
+							settings.activeImage = settings.activeImage + 1;
+							_set_image_to_view();
+							return false;
+						});
+				} else {
+					// Show the images button for Next buttons
+					$('#lightbox-nav-btnNext').unbind().hover(function() {
+						$(this).css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' });
+					},function() {
+						$(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
+					}).show().bind('click',function() {
+						settings.activeImage = settings.activeImage + 1;
+						_set_image_to_view();
+						return false;
+					});
+				}
+			}
+			// Enable keyboard navigation
+			_enable_keyboard_navigation();
+		}
+		/**
+		 * Enable a support to keyboard navigation
+		 *
+		 */
+		function _enable_keyboard_navigation() {
+			$(document).keydown(function(objEvent) {
+				_keyboard_action(objEvent);
+			});
+		}
+		/**
+		 * Disable the support to keyboard navigation
+		 *
+		 */
+		function _disable_keyboard_navigation() {
+			$(document).unbind();
+		}
+		/**
+		 * Perform the keyboard actions
+		 *
+		 */
+		function _keyboard_action(objEvent) {
+			// To ie
+			if ( objEvent == null ) {
+				keycode = event.keyCode;
+				escapeKey = 27;
+			// To Mozilla
+			} else {
+				keycode = objEvent.keyCode;
+				escapeKey = objEvent.DOM_VK_ESCAPE;
+			}
+			// Get the key in lower case form
+			key = String.fromCharCode(keycode).toLowerCase();
+			// Verify the keys to close the ligthBox
+			if ( ( key == settings.keyToClose ) || ( key == 'x' ) || ( keycode == escapeKey ) ) {
+				_finish();
+			}
+			// Verify the key to show the previous image
+			if ( ( key == settings.keyToPrev ) || ( keycode == 37 ) ) {
+				// If we�re not showing the first image, call the previous
+				if ( settings.activeImage != 0 ) {
+					settings.activeImage = settings.activeImage - 1;
+					_set_image_to_view();
+					_disable_keyboard_navigation();
+				}
+			}
+			// Verify the key to show the next image
+			if ( ( key == settings.keyToNext ) || ( keycode == 39 ) ) {
+				// If we�re not showing the last image, call the next
+				if ( settings.activeImage != ( settings.imageArray.length - 1 ) ) {
+					settings.activeImage = settings.activeImage + 1;
+					_set_image_to_view();
+					_disable_keyboard_navigation();
+				}
+			}
+		}
+		/**
+		 * Preload prev and next images being showed
+		 *
+		 */
+		function _preload_neighbor_images() {
+			if ( (settings.imageArray.length -1) > settings.activeImage ) {
+				objNext = new Image();
+				objNext.src = settings.imageArray[settings.activeImage + 1][0];
+			}
+			if ( settings.activeImage > 0 ) {
+				objPrev = new Image();
+				objPrev.src = settings.imageArray[settings.activeImage -1][0];
+			}
+		}
+		/**
+		 * Remove jQuery lightBox plugin HTML markup
+		 *
+		 */
+		function _finish() {
+			$('#jquery-lightbox').remove();
+			$('#jquery-overlay').fadeOut(function() { $('#jquery-overlay').remove(); });
+			// Show some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
+			$('embed, object, select').css({ 'visibility' : 'visible' });
+		}
+		/**
+		 / THIRD FUNCTION
+		 * getPageSize() by quirksmode.com
+		 *
+		 * @return Array Return an array with page width, height and window width, height
+		 */
+		function ___getPageSize() {
+			var xScroll, yScroll;
+			if (window.innerHeight && window.scrollMaxY) {	
+				xScroll = window.innerWidth + window.scrollMaxX;
+				yScroll = window.innerHeight + window.scrollMaxY;
+			} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
+				xScroll = document.body.scrollWidth;
+				yScroll = document.body.scrollHeight;
+			} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
+				xScroll = document.body.offsetWidth;
+				yScroll = document.body.offsetHeight;
+			}
+			var windowWidth, windowHeight;
+			if (self.innerHeight) {	// all except Explorer
+				if(document.documentElement.clientWidth){
+					windowWidth = document.documentElement.clientWidth; 
+				} else {
+					windowWidth = self.innerWidth;
+				}
+				windowHeight = self.innerHeight;
+			} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
+				windowWidth = document.documentElement.clientWidth;
+				windowHeight = document.documentElement.clientHeight;
+			} else if (document.body) { // other Explorers
+				windowWidth = document.body.clientWidth;
+				windowHeight = document.body.clientHeight;
+			}	
+			// for small pages with total height less then height of the viewport
+			if(yScroll < windowHeight){
+				pageHeight = windowHeight;
+			} else { 
+				pageHeight = yScroll;
+			}
+			// for small pages with total width less then width of the viewport
+			if(xScroll < windowWidth){	
+				pageWidth = xScroll;		
+			} else {
+				pageWidth = windowWidth;
+			}
+			arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight);
+			return arrayPageSize;
+		};
+		/**
+		 / THIRD FUNCTION
+		 * getPageScroll() by quirksmode.com
+		 *
+		 * @return Array Return an array with x,y page scroll values.
+		 */
+		function ___getPageScroll() {
+			var xScroll, yScroll;
+			if (self.pageYOffset) {
+				yScroll = self.pageYOffset;
+				xScroll = self.pageXOffset;
+			} else if (document.documentElement && document.documentElement.scrollTop) {	 // Explorer 6 Strict
+				yScroll = document.documentElement.scrollTop;
+				xScroll = document.documentElement.scrollLeft;
+			} else if (document.body) {// all other Explorers
+				yScroll = document.body.scrollTop;
+				xScroll = document.body.scrollLeft;	
+			}
+			arrayPageScroll = new Array(xScroll,yScroll);
+			return arrayPageScroll;
+		};
+		 /**
+		  * Stop the code execution from a escified time in milisecond
+		  *
+		  */
+		 function ___pause(ms) {
+			var date = new Date(); 
+			curDate = null;
+			do { var curDate = new Date(); }
+			while ( curDate - date < ms);
+		 };
+		// Return the jQuery object for chaining. The unbind method is used to avoid click conflict when the plugin is called more than once
+		return this.unbind('click').click(_initialize);
+	};
+})(jqPhoto); // Call and execute the function immediately passing the jQuery object
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