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| - | // -----------------------------------------------------------------------------------
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| - | //
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| - | // Lightbox v2.05
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| - | // by Lokesh Dhakar - http://www.lokeshdhakar.com
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| - | // Last Modification: 3/18/11
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| - | //
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| - | // For more information, visit:
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| - | // http://lokeshdhakar.com/projects/lightbox2/
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| - | //
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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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| - | //
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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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| - | // -----------------------------------------------------------------------------------
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| - | /*
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| - |
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| - | Table of Contents
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| - | -----------------
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| - | Configuration
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| - |
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| - | Lightbox Class Declaration
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| - | - initialize()
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| - | - updateImageList()
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| - | - start()
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| - | - changeImage()
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| - | - resizeImageContainer()
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| - | - showImage()
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| - | - updateDetails()
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| - | - updateNav()
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| - | - enableKeyboardNav()
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| - | - disableKeyboardNav()
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| - | - keyboardAction()
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| - | - preloadNeighborImages()
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| - | - end()
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| - |
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| - | Function Calls
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| - | - document.observe()
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| - |
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| - | */
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| - | // -----------------------------------------------------------------------------------
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| - |
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| - | //
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| - | // Configurationl
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| - | //
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| - | LightboxOptions = Object.extend({
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| - | fileLoadingImage: 'images/loading.gif',
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| - | fileBottomNavCloseImage: 'images/closelabel.gif',
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| - |
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| - | overlayOpacity: 0.8, // controls transparency of shadow overlay
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| - |
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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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| - |
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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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| - |
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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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| - | labelImage: "Image",
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| - | labelOf: "of"
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| - | }, window.LightboxOptions || {});
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| - |
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| - | // -----------------------------------------------------------------------------------
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| - |
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| - | var Lightbox = Class.create();
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| - |
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| - | Lightbox.prototype = {
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| - | imageArray: [],
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| - | activeImage: undefined,
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| - |
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| - | // initialize()
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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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| - | //
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| - | initialize: function() {
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| - |
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| - | this.updateImageList();
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| - |
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| - | this.keyboardAction = this.keyboardAction.bindAsEventListener(this);
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| - |
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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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| - |
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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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| - |
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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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| - |
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| - |
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| - | // Code inserts html at the bottom of the page that looks similar to this:
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| - | //
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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>
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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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| - | // </a>
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| - | // </div>
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| - | // </div>
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| - | // </div>
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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>
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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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| - | // </a>
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| - | // </div>
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| - | // </div>
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| - | // </div>
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| - | // </div>
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| - |
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| - |
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| - | var objBody = $$('body')[0];
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| - |
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| - | objBody.appendChild(Builder.node('div',{id:'overlay'}));
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| - |
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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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| - | ]),
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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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| - | )
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| - | )
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| - | ])
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| - | ),
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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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| - | ]),
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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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| - | )
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| - | )
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| - | ])
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| - | )
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| - | ]));
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| - |
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| - |
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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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| - |
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| - | var th = this;
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| - | (function(){
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| - | var ids =
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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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| - | }).defer();
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| - | },
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| - |
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| - | //
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| - | // updateImageList()
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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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| - | //
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| - | updateImageList: function() {
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| - | this.updateImageList = Prototype.emptyFunction;
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| - |
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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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| - | if (target) {
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| - | event.stop();
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| - | this.start(target);
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| - | }
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| - | }).bind(this));
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| - | },
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| - |
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| - | //
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| - | // start()
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| - | // Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
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| - | //
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| - | start: function(imageLink) {
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| - |
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| - | $$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'hidden' });
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| - |
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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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| - |
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| - | new Effect.Appear(this.overlay, { duration: this.overlayDuration, from: 0.0, to: LightboxOptions.overlayOpacity });
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| - |
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| - | this.imageArray = [];
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| - | var imageNum = 0;
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| - |
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| - | if ((imageLink.getAttribute("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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| - | } else {
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| - | // if image is part of a set..
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| - | this.imageArray =
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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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| - | uniq();
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| - |
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| - | while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; }
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| - | }
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| - |
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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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| - |
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| - | this.changeImage(imageNum);
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| - | },
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| - |
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| - | //
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| - | // changeImage()
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| - | // Hide most elements and preload image in preparation for resizing image container.
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| - | //
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| - | changeImage: function(imageNum) {
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| - |
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| - | this.activeImage = imageNum; // update global var
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| - |
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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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| - |
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| - | var imgPreloader = new Image();
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| - |
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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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| - | /*Bug Fixed by Andy Scott*/
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| - | this.lightboxImage.width = imgPreloader.width;
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| - | this.lightboxImage.height = imgPreloader.height;
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| - | /*End of Bug Fix*/
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| - | this.resizeImageContainer(imgPreloader.width, imgPreloader.height);
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| - | }).bind(this);
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| - | imgPreloader.src = this.imageArray[this.activeImage][0];
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| - | },
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| - |
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| - | //
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| - | // resizeImageContainer()
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| - | //
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| - | resizeImageContainer: function(imgWidth, imgHeight) {
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| - |
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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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| - |
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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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| - |
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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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| - |
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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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| - |
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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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| - |
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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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| - | var timeout = 0;
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| - | if ((hDiff == 0) && (wDiff == 0)){
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| - | timeout = 100;
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| - | if (Prototype.Browser.IE) timeout = 250;
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| - | }
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| - |
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| - | (function(){
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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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| - |
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| - | this.showImage();
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| - | }).bind(this).delay(timeout / 1000);
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| - | },
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| - |
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| - | //
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| - | // showImage()
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| - | // Display image and begin preloading neighbors.
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| - | //
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| - | showImage: function(){
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| - | this.loading.hide();
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| - | new Effect.Appear(this.lightboxImage, {
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| - | duration: this.resizeDuration,
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| - | queue: 'end',
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| - | afterFinish: (function(){ this.updateDetails(); }).bind(this)
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| - | });
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| - | this.preloadNeighborImages();
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| - | },
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| - |
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| - | //
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| - | // updateDetails()
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| - | // Display caption, image number, and bottom nav.
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| - | //
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| - | updateDetails: function() {
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| - |
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| - | this.caption.update(this.imageArray[this.activeImage][1]).show();
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| - |
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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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| - | }
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| - |
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| - | new Effect.Parallel(
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| - | [
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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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| - | ],
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| - | {
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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({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' });
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| - | this.updateNav();
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| - | }).bind(this)
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| - | }
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| - | );
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| - | },
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| - |
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| - | //
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| - | // updateNav()
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| - | // Display appropriate previous and next hover navigation.
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| - | //
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| - | updateNav: function() {
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| - |
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| - | this.hoverNav.show();
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| - |
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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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| - |
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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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| - |
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| - | this.enableKeyboardNav();
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| - | },
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| - |
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| - | //
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| - | // enableKeyboardNav()
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| - | //
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| - | enableKeyboardNav: function() {
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| - | document.observe('keydown', this.keyboardAction);
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| - | },
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| - |
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| - | //
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| - | // disableKeyboardNav()
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| - | //
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| - | disableKeyboardNav: function() {
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| - | document.stopObserving('keydown', this.keyboardAction);
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| - | },
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| - |
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| - | //
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| - | // keyboardAction()
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| - | //
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| - | keyboardAction: function(event) {
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| - | var keycode = event.keyCode;
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| - |
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| - | var escapeKey;
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| - | if (event.DOM_VK_ESCAPE) { // mozilla
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| - | escapeKey = event.DOM_VK_ESCAPE;
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| - | } else { // ie
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| - | escapeKey = 27;
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| - | }
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| - |
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| - | var key = String.fromCharCode(keycode).toLowerCase();
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| - |
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| - | if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox
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| - | this.end();
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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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| - | }
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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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| - | }
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| - | }
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| - | },
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| - |
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| - | //
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| - | // preloadNeighborImages()
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| - | // Preload previous and next images.
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| - | //
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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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| - | }
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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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| - | }
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| - |
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| - | },
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| - |
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| - | //
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| - | // end()
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| - | //
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| - | end: function() {
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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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| - |
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| - | //
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| - | // getPageSize()
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| - | //
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| - | getPageSize: function() {
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| - |
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| - | var xScroll, yScroll;
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| - |
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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;
| |
| - | } 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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| - | }
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| - |
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| - | var windowWidth, windowHeight;
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| - |
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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;
| |
| - | } else {
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| - | windowWidth = self.innerWidth;
| |
| - | }
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| - | windowHeight = self.innerHeight;
| |
| - | } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
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| - | 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(); });
| |
"
