// ----------------------------------------------------------------------------------- // // Lightbox v2.05 // by Lokesh Dhakar - http://www.lokeshdhakar.com // Last Modification: 3/18/11 // // For more information, visit: // http://lokeshdhakar.com/projects/lightbox2/ // // Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/ // - Free for use in both personal and commercial projects // - Attribution requires leaving author name, author link, and the license info intact. // // Thanks: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.com), and Thomas Fuchs(mir.aculo.us) for ideas, libs, and snippets. // Artemy Tregubenko (arty.name) for cleanup and help in updating to latest ver of proto-aculous. // // ----------------------------------------------------------------------------------- /* Table of Contents ----------------- Configuration Lightbox Class Declaration - initialize() - updateImageList() - start() - changeImage() - resizeImageContainer() - showImage() - updateDetails() - updateNav() - enableKeyboardNav() - disableKeyboardNav() - keyboardAction() - preloadNeighborImages() - end() Function Calls - document.observe() */ // ----------------------------------------------------------------------------------- // // Configurationl // LightboxOptions = Object.extend({ fileLoadingImage: '/wp-content/themes/009/images/loading.gif', fileBottomNavCloseImage: '/wp-content/themes/009/images/closelabel.gif', overlayOpacity: 0.8, // controls transparency of shadow overlay animate: true, // toggles resizing animations resizeSpeed: 7, // controls the speed of the image resizing animations (1=slowest and 10=fastest) borderSize: 10, //if you adjust the padding in the CSS, you will need to update this variable // When grouping images this is used to write: Image # of #. // Change it for non-english localization labelImage: "Image", labelOf: "of" }, window.LightboxOptions || {}); // ----------------------------------------------------------------------------------- var Lightbox = Class.create(); Lightbox.prototype = { imageArray: [], activeImage: undefined, // initialize() // Constructor runs on completion of the DOM loading. Calls updateImageList and then // the function inserts html at the bottom of the page which is used to display the shadow // overlay and the image container. // initialize: function() { this.updateImageList(); this.keyboardAction = this.keyboardAction.bindAsEventListener(this); if (LightboxOptions.resizeSpeed > 10) LightboxOptions.resizeSpeed = 10; if (LightboxOptions.resizeSpeed < 1) LightboxOptions.resizeSpeed = 1; this.resizeDuration = LightboxOptions.animate ? ((11 - LightboxOptions.resizeSpeed) * 0.15) : 0; this.overlayDuration = LightboxOptions.animate ? 0.2 : 0; // shadow fade in/out duration // When Lightbox starts it will resize itself from 250 by 250 to the current image dimension. // If animations are turned off, it will be hidden as to prevent a flicker of a // white 250 by 250 box. var size = (LightboxOptions.animate ? 250 : 1) + 'px'; // Code inserts html at the bottom of the page that looks similar to this: // //
// var objBody = $$('body')[0]; objBody.appendChild(Builder.node('div',{id:'overlay'})); objBody.appendChild(Builder.node('div',{id:'lightbox'}, [ Builder.node('div',{id:'outerImageContainer'}, Builder.node('div',{id:'imageContainer'}, [ Builder.node('img',{id:'lightboxImage'}), Builder.node('div',{id:'hoverNav'}, [ Builder.node('a',{id:'prevLink', href: '#' }), Builder.node('a',{id:'nextLink', href: '#' }) ]), Builder.node('div',{id:'loading'}, Builder.node('a',{id:'loadingLink', href: '#' }, Builder.node('img', {src: LightboxOptions.fileLoadingImage}) ) ) ]) ), Builder.node('div', {id:'imageDataContainer'}, Builder.node('div',{id:'imageData'}, [ Builder.node('div',{id:'imageDetails'}, [ Builder.node('span',{id:'caption'}), Builder.node('span',{id:'numberDisplay'}) ]), Builder.node('div',{id:'bottomNav'}, Builder.node('a',{id:'bottomNavClose', href: '#' }, Builder.node('img', { src: LightboxOptions.fileBottomNavCloseImage }) ) ) ]) ) ])); $('overlay').hide().observe('click', (function() { this.end(); }).bind(this)); $('lightbox').hide().observe('click', (function(event) { if (event.element().id == 'lightbox') this.end(); }).bind(this)); $('outerImageContainer').setStyle({ width: size, height: size }); $('prevLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage - 1); }).bindAsEventListener(this)); $('nextLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage + 1); }).bindAsEventListener(this)); $('loadingLink').observe('click', (function(event) { event.stop(); this.end(); }).bind(this)); $('bottomNavClose').observe('click', (function(event) { event.stop(); this.end(); }).bind(this)); var th = this; (function(){ var ids = 'overlay lightbox outerImageContainer imageContainer lightboxImage hoverNav prevLink nextLink loading loadingLink ' + 'imageDataContainer imageData imageDetails caption numberDisplay bottomNav bottomNavClose'; $w(ids).each(function(id){ th[id] = $(id); }); }).defer(); }, // // updateImageList() // Loops through anchor tags looking for 'lightbox' references and applies onclick // events to appropriate links. You can rerun after dynamically adding images w/ajax. // updateImageList: function() { this.updateImageList = Prototype.emptyFunction; document.observe('click', (function(event){ var target = event.findElement('a[rel^=lightbox]') || event.findElement('area[rel^=lightbox]'); if (target) { event.stop(); this.start(target); } }).bind(this)); }, // // start() // Display overlay and lightbox. If image is part of a set, add siblings to imageArray. // start: function(imageLink) { $$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'hidden' }); // stretch overlay to fill page and fade in var arrayPageSize = this.getPageSize(); $('overlay').setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' }); new Effect.Appear(this.overlay, { duration: this.overlayDuration, from: 0.0, to: LightboxOptions.overlayOpacity }); this.imageArray = []; var imageNum = 0; if ((imageLink.getAttribute("rel") == 'lightbox')){ // if image is NOT part of a set, add single image to imageArray this.imageArray.push([imageLink.href, imageLink.title]); } else { // if image is part of a set.. this.imageArray = $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]'). collect(function(anchor){ return [anchor.href, anchor.title]; }). uniq(); while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; } } // calculate top and left offset for the lightbox var arrayPageScroll = document.viewport.getScrollOffsets(); var lightboxTop = arrayPageScroll[1] + (document.viewport.getHeight() / 10); var lightboxLeft = arrayPageScroll[0]; this.lightbox.setStyle({ top: lightboxTop + 'px', left: lightboxLeft + 'px' }).show(); this.changeImage(imageNum); }, // // changeImage() // Hide most elements and preload image in preparation for resizing image container. // changeImage: function(imageNum) { this.activeImage = imageNum; // update global var // hide elements during transition if (LightboxOptions.animate) this.loading.show(); this.lightboxImage.hide(); this.hoverNav.hide(); this.prevLink.hide(); this.nextLink.hide(); // HACK: Opera9 does not currently support scriptaculous opacity and appear fx this.imageDataContainer.setStyle({opacity: .0001}); this.numberDisplay.hide(); var imgPreloader = new Image(); // once image is preloaded, resize image container imgPreloader.onload = (function(){ this.lightboxImage.src = this.imageArray[this.activeImage][0]; /*Bug Fixed by Andy Scott*/ this.lightboxImage.width = imgPreloader.width; this.lightboxImage.height = imgPreloader.height; /*End of Bug Fix*/ this.resizeImageContainer(imgPreloader.width, imgPreloader.height); }).bind(this); imgPreloader.src = this.imageArray[this.activeImage][0]; }, // // resizeImageContainer() // resizeImageContainer: function(imgWidth, imgHeight) { // get current width and height var widthCurrent = this.outerImageContainer.getWidth(); var heightCurrent = this.outerImageContainer.getHeight(); // get new width and height var widthNew = (imgWidth + LightboxOptions.borderSize * 2); var heightNew = (imgHeight + LightboxOptions.borderSize * 2); // scalars based on change from old to new var xScale = (widthNew / widthCurrent) * 100; var yScale = (heightNew / heightCurrent) * 100; // calculate size difference between new and old image, and resize if necessary var wDiff = widthCurrent - widthNew; var hDiff = heightCurrent - heightNew; if (hDiff != 0) new Effect.Scale(this.outerImageContainer, yScale, {scaleX: false, duration: this.resizeDuration, queue: 'front'}); if (wDiff != 0) new Effect.Scale(this.outerImageContainer, xScale, {scaleY: false, duration: this.resizeDuration, delay: this.resizeDuration}); // if new and old image are same size and no scaling transition is necessary, // do a quick pause to prevent image flicker. var timeout = 0; if ((hDiff == 0) && (wDiff == 0)){ timeout = 100; if (Prototype.Browser.IE) timeout = 250; } (function(){ this.prevLink.setStyle({ height: imgHeight + 'px' }); this.nextLink.setStyle({ height: imgHeight + 'px' }); this.imageDataContainer.setStyle({ width: widthNew + 'px' }); this.showImage(); }).bind(this).delay(timeout / 1000); }, // // showImage() // Display image and begin preloading neighbors. // showImage: function(){ this.loading.hide(); new Effect.Appear(this.lightboxImage, { duration: this.resizeDuration, queue: 'end', afterFinish: (function(){ this.updateDetails(); }).bind(this) }); this.preloadNeighborImages(); }, // // updateDetails() // Display caption, image number, and bottom nav. // updateDetails: function() { this.caption.update(this.imageArray[this.activeImage][1]).show(); // if image is part of set display 'Image x of x' if (this.imageArray.length > 1){ this.numberDisplay.update( LightboxOptions.labelImage + ' ' + (this.activeImage + 1) + ' ' + LightboxOptions.labelOf + ' ' + this.imageArray.length).show(); } new Effect.Parallel( [ new Effect.SlideDown(this.imageDataContainer, { sync: true, duration: this.resizeDuration, from: 0.0, to: 1.0 }), new Effect.Appear(this.imageDataContainer, { sync: true, duration: this.resizeDuration }) ], { duration: this.resizeDuration, afterFinish: (function() { // update overlay size and update nav var arrayPageSize = this.getPageSize(); this.overlay.setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' }); this.updateNav(); }).bind(this) } ); }, // // updateNav() // Display appropriate previous and next hover navigation. // updateNav: function() { this.hoverNav.show(); // if not first image in set, display prev image button if (this.activeImage > 0) this.prevLink.show(); // if not last image in set, display next image button if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show(); this.enableKeyboardNav(); }, // // enableKeyboardNav() // enableKeyboardNav: function() { document.observe('keydown', this.keyboardAction); }, // // disableKeyboardNav() // disableKeyboardNav: function() { document.stopObserving('keydown', this.keyboardAction); }, // // keyboardAction() // keyboardAction: function(event) { var keycode = event.keyCode; var escapeKey; if (event.DOM_VK_ESCAPE) { // mozilla escapeKey = event.DOM_VK_ESCAPE; } else { // ie escapeKey = 27; } var key = String.fromCharCode(keycode).toLowerCase(); if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox this.end(); } else if ((key == 'p') || (keycode == 37)){ // display previous image if (this.activeImage != 0){ this.disableKeyboardNav(); this.changeImage(this.activeImage - 1); } } else if ((key == 'n') || (keycode == 39)){ // display next image if (this.activeImage != (this.imageArray.length - 1)){ this.disableKeyboardNav(); this.changeImage(this.activeImage + 1); } } }, // // preloadNeighborImages() // Preload previous and next images. // preloadNeighborImages: function(){ var preloadNextImage, preloadPrevImage; if (this.imageArray.length > this.activeImage + 1){ preloadNextImage = new Image(); preloadNextImage.src = this.imageArray[this.activeImage + 1][0]; } if (this.activeImage > 0){ preloadPrevImage = new Image(); preloadPrevImage.src = this.imageArray[this.activeImage - 1][0]; } }, // // end() // end: function() { this.disableKeyboardNav(); this.lightbox.hide(); new Effect.Fade(this.overlay, { duration: this.overlayDuration }); $$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' }); }, // // getPageSize() // getPageSize: function() { 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; } return [pageWidth,pageHeight]; } } document.observe('dom:loaded', function () { new Lightbox(); });