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header('Content-type: text/javascript');
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require_once(dirname(__FILE__).'/../../../config.php');
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// -----------------------------------------------------------------------------------
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// by Lokesh Dhakar - http://www.lokeshdhakar.com
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// Last Modification: 2/9/08
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// For more information, visit:
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// http://lokeshdhakar.com/projects/lightbox2/
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// Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
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// - Free for use in both personal and commercial projects
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// - Attribution requires leaving author name, author link, and the license info intact.
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// Thanks: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.com), and Thomas Fuchs(mir.aculo.us) for ideas, libs, and snippets.
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// Artemy Tregubenko (arty.name) for cleanup and help in updating to latest ver of proto-aculous.
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// -----------------------------------------------------------------------------------
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Lightbox Class Declaration
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- resizeImageContainer()
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- disableKeyboardNav()
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- preloadNeighborImages()
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// -----------------------------------------------------------------------------------
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LightboxOptions = Object.extend({
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fileLoadingImage: '<?php echo KAG_BASE_URL.'/packs/plugins/lightbox/loading.gif'; ?>',
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fileBottomNavCloseImage: '<?php echo KAG_BASE_URL.'/packs/plugins/lightbox/closelabel.gif'; ?>',
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overlayOpacity: 0.8, // controls transparency of shadow overlay
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animate: true, // toggles resizing animations
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resizeSpeed: 7, // controls the speed of the image resizing animations (1=slowest and 10=fastest)
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borderSize: 10, //if you adjust the padding in the CSS, you will need to update this variable
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// When grouping images this is used to write: Image # of #.
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// Change it for non-english localization
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}, window.LightboxOptions || {});
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// -----------------------------------------------------------------------------------
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var Lightbox = Class.create();
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Lightbox.prototype = {
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activeImage: undefined,
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// Constructor runs on completion of the DOM loading. Calls updateImageList and then
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// the function inserts html at the bottom of the page which is used to display the shadow
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// overlay and the image container.
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initialize: function() {
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this.updateImageList();
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this.keyboardAction = this.keyboardAction.bindAsEventListener(this);
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if (LightboxOptions.resizeSpeed > 10) LightboxOptions.resizeSpeed = 10;
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if (LightboxOptions.resizeSpeed < 1) LightboxOptions.resizeSpeed = 1;
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this.resizeDuration = LightboxOptions.animate ? ((11 - LightboxOptions.resizeSpeed) * 0.15) : 0;
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this.overlayDuration = LightboxOptions.animate ? 0.2 : 0; // shadow fade in/out duration
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// When Lightbox starts it will resize itself from 250 by 250 to the current image dimension.
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// If animations are turned off, it will be hidden as to prevent a flicker of a
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// white 250 by 250 box.
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var size = (LightboxOptions.animate ? 250 : 1) + 'px';
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// Code inserts html at the bottom of the page that looks similar to this:
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// <div id="overlay"></div>
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// <div id="lightbox">
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// <div id="outerImageContainer">
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// <div id="imageContainer">
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// <img id="lightboxImage">
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// <div style="" id="hoverNav">
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// <a href="#" id="prevLink"></a>
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// <a href="#" id="nextLink"></a>
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// <div id="loading">
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// <a href="#" id="loadingLink">
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// <img src="images/loading.gif">
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// <div id="imageDataContainer">
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// <div id="imageData">
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// <div id="imageDetails">
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// <span id="caption"></span>
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// <span id="numberDisplay"></span>
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// <div id="bottomNav">
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// <a href="#" id="bottomNavClose">
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// <img src="images/close.gif">
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var objBody = $$('body')[0];
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objBody.appendChild(Builder.node('div',{id:'overlay'}));
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objBody.appendChild(Builder.node('div',{id:'lightbox'}, [
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Builder.node('div',{id:'outerImageContainer'},
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Builder.node('div',{id:'imageContainer'}, [
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Builder.node('img',{id:'lightboxImage'}),
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Builder.node('div',{id:'hoverNav'}, [
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Builder.node('a',{id:'prevLink', href: '#' }),
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Builder.node('a',{id:'nextLink', href: '#' })
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Builder.node('div',{id:'loading'},
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Builder.node('a',{id:'loadingLink', href: '#' },
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Builder.node('img', {src: LightboxOptions.fileLoadingImage})
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Builder.node('div', {id:'imageDataContainer'},
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Builder.node('div',{id:'imageData'}, [
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Builder.node('div',{id:'imageDetails'}, [
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Builder.node('span',{id:'caption'}),
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Builder.node('span',{id:'numberDisplay'})
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Builder.node('div',{id:'bottomNav'},
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Builder.node('a',{id:'bottomNavClose', href: '#' },
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Builder.node('img', { src: LightboxOptions.fileBottomNavCloseImage })
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$('overlay').hide().observe('click', (function() { this.end(); }).bind(this));
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$('lightbox').hide().observe('click', (function(event) { if (event.element().id == 'lightbox') this.end(); }).bind(this));
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$('outerImageContainer').setStyle({ width: size, height: size });
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$('prevLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage - 1); }).bindAsEventListener(this));
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$('nextLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage + 1); }).bindAsEventListener(this));
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$('loadingLink').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));
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$('bottomNavClose').observe('click', (function(event) { event.stop(); this.end(); }).bind(this));
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'overlay lightbox outerImageContainer imageContainer lightboxImage hoverNav prevLink nextLink loading loadingLink ' +
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'imageDataContainer imageData imageDetails caption numberDisplay bottomNav bottomNavClose';
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$w(ids).each(function(id){ th[id] = $(id); });
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// Loops through anchor tags looking for 'lightbox' references and applies onclick
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// events to appropriate links. You can rerun after dynamically adding images w/ajax.
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updateImageList: function() {
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this.updateImageList = Prototype.emptyFunction;
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document.observe('click', (function(event){
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var target = event.findElement('a[rel^=lightbox]') || event.findElement('area[rel^=lightbox]');
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// Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
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start: function(imageLink) {
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$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'hidden' });
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// stretch overlay to fill page and fade in
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var arrayPageSize = this.getPageSize();
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$('overlay').setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' });
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new Effect.Appear(this.overlay, { duration: this.overlayDuration, from: 0.0, to: LightboxOptions.overlayOpacity });
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this.imageArray = [];
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if ((imageLink.rel == 'lightbox')){
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// if image is NOT part of a set, add single image to imageArray
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this.imageArray.push([imageLink.href, imageLink.title]);
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// if image is part of a set..
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$$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]').
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collect(function(anchor){ return [anchor.href, anchor.title]; }).
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while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }
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// calculate top and left offset for the lightbox
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var arrayPageScroll = document.viewport.getScrollOffsets();
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var lightboxTop = arrayPageScroll[1] + (document.viewport.getHeight() / 10);
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var lightboxLeft = arrayPageScroll[0];
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this.lightbox.setStyle({ top: lightboxTop + 'px', left: lightboxLeft + 'px' }).show();
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this.changeImage(imageNum);
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// Hide most elements and preload image in preparation for resizing image container.
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changeImage: function(imageNum) {
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this.activeImage = imageNum; // update global var
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// hide elements during transition
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if (LightboxOptions.animate) this.loading.show();
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this.lightboxImage.hide();
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this.hoverNav.hide();
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this.prevLink.hide();
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this.nextLink.hide();
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// HACK: Opera9 does not currently support scriptaculous opacity and appear fx
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this.imageDataContainer.setStyle({opacity: .0001});
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this.numberDisplay.hide();
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var imgPreloader = new Image();
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// once image is preloaded, resize image container
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imgPreloader.onload = (function(){
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this.lightboxImage.src = this.imageArray[this.activeImage][0];
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this.resizeImageContainer(imgPreloader.width, imgPreloader.height);
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imgPreloader.src = this.imageArray[this.activeImage][0];
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// resizeImageContainer()
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resizeImageContainer: function(imgWidth, imgHeight) {
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// get current width and height
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var widthCurrent = this.outerImageContainer.getWidth();
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var heightCurrent = this.outerImageContainer.getHeight();
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// get new width and height
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var widthNew = (imgWidth + LightboxOptions.borderSize * 2);
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var heightNew = (imgHeight + LightboxOptions.borderSize * 2);
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// scalars based on change from old to new
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var xScale = (widthNew / widthCurrent) * 100;
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var yScale = (heightNew / heightCurrent) * 100;
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// calculate size difference between new and old image, and resize if necessary
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var wDiff = widthCurrent - widthNew;
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var hDiff = heightCurrent - heightNew;
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if (hDiff != 0) new Effect.Scale(this.outerImageContainer, yScale, {scaleX: false, duration: this.resizeDuration, queue: 'front'});
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if (wDiff != 0) new Effect.Scale(this.outerImageContainer, xScale, {scaleY: false, duration: this.resizeDuration, delay: this.resizeDuration});
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// if new and old image are same size and no scaling transition is necessary,
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// do a quick pause to prevent image flicker.
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if ((hDiff == 0) && (wDiff == 0)){
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if (Prototype.Browser.IE) timeout = 250;
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this.prevLink.setStyle({ height: imgHeight + 'px' });
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this.nextLink.setStyle({ height: imgHeight + 'px' });
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this.imageDataContainer.setStyle({ width: widthNew + 'px' });
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}).bind(this).delay(timeout / 1000);
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// Display image and begin preloading neighbors.
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showImage: function(){
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new Effect.Appear(this.lightboxImage, {
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duration: this.resizeDuration,
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afterFinish: (function(){ this.updateDetails(); }).bind(this)
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this.preloadNeighborImages();
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// Display caption, image number, and bottom nav.
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updateDetails: function() {
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// if caption is not null
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if (this.imageArray[this.activeImage][1] != ""){
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this.caption.update(this.imageArray[this.activeImage][1]).show();
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// if image is part of set display 'Image x of x'
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if (this.imageArray.length > 1){
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this.numberDisplay.update( LightboxOptions.labelImage + ' ' + (this.activeImage + 1) + ' ' + LightboxOptions.labelOf + ' ' + this.imageArray.length).show();
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new Effect.SlideDown(this.imageDataContainer, { sync: true, duration: this.resizeDuration, from: 0.0, to: 1.0 }),
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new Effect.Appear(this.imageDataContainer, { sync: true, duration: this.resizeDuration })
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duration: this.resizeDuration,
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afterFinish: (function() {
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// update overlay size and update nav
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var arrayPageSize = this.getPageSize();
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this.overlay.setStyle({ height: arrayPageSize[1] + 'px' });
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// Display appropriate previous and next hover navigation.
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updateNav: function() {
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this.hoverNav.show();
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// if not first image in set, display prev image button
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if (this.activeImage > 0) this.prevLink.show();
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// if not last image in set, display next image button
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if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show();
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this.enableKeyboardNav();
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// enableKeyboardNav()
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enableKeyboardNav: function() {
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document.observe('keydown', this.keyboardAction);
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// disableKeyboardNav()
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disableKeyboardNav: function() {
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document.stopObserving('keydown', this.keyboardAction);
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keyboardAction: function(event) {
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var keycode = event.keyCode;
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if (event.DOM_VK_ESCAPE) { // mozilla
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escapeKey = event.DOM_VK_ESCAPE;
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var key = String.fromCharCode(keycode).toLowerCase();
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if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
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} else if ((key == 'p') || (keycode == 37)){ // display previous image
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if (this.activeImage != 0){
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this.disableKeyboardNav();
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this.changeImage(this.activeImage - 1);
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} else if ((key == 'n') || (keycode == 39)){ // display next image
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if (this.activeImage != (this.imageArray.length - 1)){
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this.disableKeyboardNav();
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this.changeImage(this.activeImage + 1);
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// preloadNeighborImages()
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// Preload previous and next images.
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preloadNeighborImages: function(){
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var preloadNextImage, preloadPrevImage;
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if (this.imageArray.length > this.activeImage + 1){
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preloadNextImage = new Image();
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preloadNextImage.src = this.imageArray[this.activeImage + 1][0];
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if (this.activeImage > 0){
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preloadPrevImage = new Image();
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preloadPrevImage.src = this.imageArray[this.activeImage - 1][0];
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this.disableKeyboardNav();
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this.lightbox.hide();
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new Effect.Fade(this.overlay, { duration: this.overlayDuration });
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$$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' });
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getPageSize: function() {
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var xScroll, yScroll;
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if (window.innerHeight && window.scrollMaxY) {
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xScroll = window.innerWidth + window.scrollMaxX;
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yScroll = window.innerHeight + window.scrollMaxY;
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} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
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xScroll = document.body.scrollWidth;
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yScroll = document.body.scrollHeight;
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} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
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xScroll = document.body.offsetWidth;
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yScroll = document.body.offsetHeight;
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var windowWidth, windowHeight;
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if (self.innerHeight) { // all except Explorer
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if(document.documentElement.clientWidth){
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windowWidth = document.documentElement.clientWidth;
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windowWidth = self.innerWidth;
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windowHeight = self.innerHeight;
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} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
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windowWidth = document.documentElement.clientWidth;
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windowHeight = document.documentElement.clientHeight;
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} else if (document.body) { // other Explorers
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windowWidth = document.body.clientWidth;
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windowHeight = document.body.clientHeight;
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// for small pages with total height less then height of the viewport
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if(yScroll < windowHeight){
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pageHeight = windowHeight;
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pageHeight = yScroll;
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// for small pages with total width less then width of the viewport
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if(xScroll < windowWidth){
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pageWidth = windowWidth;
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return [pageWidth,pageHeight];
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document.observe('dom:loaded', function () { new Lightbox(); });
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kagura/packs/plugins/lightbox/lightbox.js.php
