604 lines
18 KiB
JavaScript
604 lines
18 KiB
JavaScript
// -----------------------------------------------------------------------------------
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//
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// Litebox v1.0
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// A combined effort between detrate and gannon
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// 07/03/06
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//
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// Source edited from Lightbox v2.02
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// by Lokesh Dhakar - http://www.huddletogether.com
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//
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// For more information on this script, visit:
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// http://doknowevil.net/litebox
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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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//
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// Credit also due to those who have helped, inspired, and made their code available to the public.
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// Including: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.org), Thomas Fuchs(mir.aculo.us), and others.
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//
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// -----------------------------------------------------------------------------------
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//
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// Configuration
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//
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var fileLoadingImage = "/images/litebox/loading.gif";
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var fileBottomNavCloseImage = "/images/litebox/closelabel.gif";
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var resizeSpeed = 6; // controls the speed of the image resizing (1=slowest and 10=fastest)
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var 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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//
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// Global Variables
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//
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var imageArray = new Array;
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var activeImage;
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if(resizeSpeed > 10){ resizeSpeed = 10;}
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if(resizeSpeed < 1){ resizeSpeed = 1;}
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resizeDuration = (11 - resizeSpeed) * 100;
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// -----------------------------------------------------------------------------------
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//
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// Additional methods for Element added by SU, Couloir
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// - further additions by Lokesh Dhakar (huddletogether.com)
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//
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Object.extend(Element, {
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hide: function() {
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for (var i = 0; i < arguments.length; i++) {
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var element = $(arguments[i]);
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element.style.display = 'none';
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}
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},
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show: function() {
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for (var i = 0; i < arguments.length; i++) {
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var element = $(arguments[i]);
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element.style.display = '';
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}
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},
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getWidth: function(element) {
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element = $(element);
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return element.offsetWidth;
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},
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setWidth: function(element,w) {
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element = $(element);
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element.style.width = w +"px";
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},
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getHeight: function(element) {
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element = $(element);
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return element.offsetHeight;
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},
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setHeight: function(element,h) {
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element = $(element);
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element.style.height = h +"px";
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},
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setTop: function(element,t) {
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element = $(element);
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element.style.top = t +"px";
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},
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setSrc: function(element,src) {
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element = $(element);
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element.src = src;
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},
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setInnerHTML: function(element,content) {
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element = $(element);
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element.innerHTML = content;
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}
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});
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// -----------------------------------------------------------------------------------
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//
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// Extending built-in Array object
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//
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Array.prototype.removeDuplicates = function () {
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for(i = 1; i < this.length; i++){
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if(this[i][0] == this[i-1][0]){
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this.splice(i,1);
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}
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}
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}
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Array.prototype.empty = function () {
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for(i = 0; i <= this.length; i++){
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this.shift();
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}
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}
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// -----------------------------------------------------------------------------------
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//
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// Structuring of code inspired by Scott Upton (http://www.uptonic.com/)
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//
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var Lightbox = Class.create();
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Lightbox.prototype = {
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// initialize()
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// Constructor runs on completion of the DOM loading. Loops through anchor tags looking for
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// 'lightbox' references and applies onclick events to appropriate links. The 2nd section of
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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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if (!document.getElementsByTagName){ return; }
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var anchors = document.getElementsByTagName('a');
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// loop through all anchor tags
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for (var i=0; i<anchors.length; i++){
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var anchor = anchors[i];
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var relAttribute = String(anchor.getAttribute('rel'));
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// use the string.match() method to catch 'lightbox' references in the rel attribute
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if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox'))){
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anchor.onclick = function () {myLightbox.start(this); return false;}
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}
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}
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var objBody = document.getElementsByTagName("body").item(0);
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var objOverlay = document.createElement("div");
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objOverlay.setAttribute('id','overlay');
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objOverlay.onclick = function() { myLightbox.end(); return false; }
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objBody.appendChild(objOverlay);
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var objLightbox = document.createElement("div");
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objLightbox.setAttribute('id','lightbox');
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objLightbox.style.display = 'none';
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objBody.appendChild(objLightbox);
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var objOuterImageContainer = document.createElement("div");
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objOuterImageContainer.setAttribute('id','outerImageContainer');
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objLightbox.appendChild(objOuterImageContainer);
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var objImageContainer = document.createElement("div");
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objImageContainer.setAttribute('id','imageContainer');
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objOuterImageContainer.appendChild(objImageContainer);
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var objLightboxImage = document.createElement("img");
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objLightboxImage.setAttribute('id','lightboxImage');
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objImageContainer.appendChild(objLightboxImage);
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var objHoverNav = document.createElement("div");
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objHoverNav.setAttribute('id','hoverNav');
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objImageContainer.appendChild(objHoverNav);
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var objPrevLink = document.createElement("a");
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objPrevLink.setAttribute('id','prevLink');
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objPrevLink.setAttribute('href','#');
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objHoverNav.appendChild(objPrevLink);
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var objNextLink = document.createElement("a");
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objNextLink.setAttribute('id','nextLink');
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objNextLink.setAttribute('href','#');
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objHoverNav.appendChild(objNextLink);
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var objLoading = document.createElement("div");
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objLoading.setAttribute('id','loading');
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objImageContainer.appendChild(objLoading);
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var objLoadingLink = document.createElement("a");
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objLoadingLink.setAttribute('id','loadingLink');
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objLoadingLink.setAttribute('href','#');
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objLoadingLink.onclick = function() { myLightbox.end(); return false; }
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objLoading.appendChild(objLoadingLink);
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var objLoadingImage = document.createElement("img");
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objLoadingImage.setAttribute('src', fileLoadingImage);
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objLoadingLink.appendChild(objLoadingImage);
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var objImageDataContainer = document.createElement("div");
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objImageDataContainer.setAttribute('id','imageDataContainer');
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objImageDataContainer.className = 'clearfix';
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objLightbox.appendChild(objImageDataContainer);
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var objImageData = document.createElement("div");
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objImageData.setAttribute('id','imageData');
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objImageDataContainer.appendChild(objImageData);
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var objImageDetails = document.createElement("div");
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objImageDetails.setAttribute('id','imageDetails');
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objImageData.appendChild(objImageDetails);
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var objCaption = document.createElement("span");
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objCaption.setAttribute('id','caption');
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objImageDetails.appendChild(objCaption);
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var objNumberDisplay = document.createElement("span");
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objNumberDisplay.setAttribute('id','numberDisplay');
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objImageDetails.appendChild(objNumberDisplay);
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var objBottomNav = document.createElement("div");
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objBottomNav.setAttribute('id','bottomNav');
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objImageData.appendChild(objBottomNav);
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var objBottomNavCloseLink = document.createElement("a");
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objBottomNavCloseLink.setAttribute('id','bottomNavClose');
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objBottomNavCloseLink.setAttribute('href','#');
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objBottomNavCloseLink.onclick = function() { myLightbox.end(); return false; }
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objBottomNav.appendChild(objBottomNavCloseLink);
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var objBottomNavCloseImage = document.createElement("img");
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objBottomNavCloseImage.setAttribute('src', fileBottomNavCloseImage);
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objBottomNavCloseLink.appendChild(objBottomNavCloseImage);
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overlayEffect = new fx.Opacity(objOverlay, { duration: 300 });
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overlayEffect.hide();
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imageEffect = new fx.Opacity(objLightboxImage, { duration: 350, onComplete: function() { imageDetailsEffect.custom(0,1); }});
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imageEffect.hide();
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imageDetailsEffect = new fx.Opacity('imageDataContainer', { duration: 400, onComplete: function() { navEffect.custom(0,1); }});
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imageDetailsEffect.hide();
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navEffect = new fx.Opacity('hoverNav', { duration: 100 });
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navEffect.hide();
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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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hideSelectBoxes();
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// stretch overlay to fill page and fade in
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var arrayPageSize = getPageSize();
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Element.setHeight('overlay', arrayPageSize[1]);
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overlayEffect.custom(0,0.8);
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imageArray = [];
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imageNum = 0;
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if (!document.getElementsByTagName){ return; }
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var anchors = document.getElementsByTagName('a');
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// if image is NOT part of a set..
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if((imageLink.getAttribute('rel') == 'lightbox')){
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// add single image to imageArray
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imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('title')));
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} else {
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// if image is part of a set..
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// loop through anchors, find other images in set, and add them to imageArray
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for (var i=0; i<anchors.length; i++){
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var anchor = anchors[i];
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if (anchor.getAttribute('href') && (anchor.getAttribute('rel') == imageLink.getAttribute('rel'))){
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imageArray.push(new Array(anchor.getAttribute('href'), anchor.getAttribute('title')));
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}
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}
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imageArray.removeDuplicates();
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while(imageArray[imageNum][0] != imageLink.getAttribute('href')) { imageNum++;}
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}
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// calculate top offset for the lightbox and display
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var arrayPageSize = getPageSize();
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var arrayPageScroll = getPageScroll();
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var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 15);
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Element.setTop('lightbox', lightboxTop);
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Element.show('lightbox');
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this.changeImage(imageNum);
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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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activeImage = imageNum; // update global var
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// hide elements during transition
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Element.show('loading');
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imageDetailsEffect.hide();
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imageEffect.hide();
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navEffect.hide();
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Element.hide('prevLink');
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Element.hide('nextLink');
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Element.hide('numberDisplay');
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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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Element.setSrc('lightboxImage', imageArray[activeImage][0]);
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myLightbox.resizeImageContainer(imgPreloader.width, imgPreloader.height);
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}
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imgPreloader.src = imageArray[activeImage][0];
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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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// get current height and width
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this.wCur = Element.getWidth('outerImageContainer');
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this.hCur = Element.getHeight('outerImageContainer');
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// calculate size difference between new and old image, and resize if necessary
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wDiff = (this.wCur - borderSize * 2) - imgWidth;
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hDiff = (this.hCur - borderSize * 2) - imgHeight;
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// Resize the outerImageContainer very sexy like
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reHeight = new fx.Height('outerImageContainer', { duration: resizeDuration });
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reHeight.custom(Element.getHeight('outerImageContainer'),imgHeight+(borderSize*2));
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reWidth = new fx.Width('outerImageContainer', { duration: resizeDuration, onComplete: function() { imageEffect.custom(0,1); }});
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reWidth.custom(Element.getWidth('outerImageContainer'),imgWidth+(borderSize*2));
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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 (navigator.appVersion.indexOf("MSIE")!=-1){ pause(250); } else { pause(100);}
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}
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Element.setHeight('prevLink', imgHeight);
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Element.setHeight('nextLink', imgHeight);
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Element.setWidth( 'imageDataContainer', imgWidth + (borderSize * 2));
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Element.setWidth( 'hoverNav', imgWidth + (borderSize * 2));
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this.showImage();
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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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Element.hide('loading');
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myLightbox.updateDetails();
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this.preloadNeighborImages();
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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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Element.show('caption');
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Element.setInnerHTML( 'caption', imageArray[activeImage][1]);
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// if image is part of set display 'Image x of x'
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if(imageArray.length > 1){
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Element.show('numberDisplay');
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Element.setInnerHTML( 'numberDisplay', "Image " + eval(activeImage + 1) + " sur " + imageArray.length);
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}
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myLightbox.updateNav();
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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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// if not first image in set, display prev image button
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if(activeImage != 0){
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Element.show('prevLink');
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document.getElementById('prevLink').onclick = function() {
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myLightbox.changeImage(activeImage - 1); return false;
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}
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}
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// if not last image in set, display next image button
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if(activeImage != (imageArray.length - 1)){
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Element.show('nextLink');
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document.getElementById('nextLink').onclick = function() {
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myLightbox.changeImage(activeImage + 1); return false;
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}
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}
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this.enableKeyboardNav();
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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.onkeydown = this.keyboardAction;
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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.onkeydown = '';
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},
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//
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// keyboardAction()
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//
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keyboardAction: function(e) {
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if (e == null) { // ie
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keycode = event.keyCode;
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} else { // mozilla
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keycode = e.which;
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}
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key = String.fromCharCode(keycode).toLowerCase();
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if((key == 'x') || (key == 'o') || (key == 'c')){ // close lightbox
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myLightbox.end();
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} else if(key == 'p'){ // display previous image
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if(activeImage != 0){
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myLightbox.disableKeyboardNav();
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myLightbox.changeImage(activeImage - 1);
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}
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} else if(key == 'n'){ // display next image
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if(activeImage != (imageArray.length - 1)){
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myLightbox.disableKeyboardNav();
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myLightbox.changeImage(activeImage + 1);
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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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if((imageArray.length - 1) > activeImage){
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preloadNextImage = new Image();
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preloadNextImage.src = imageArray[activeImage + 1][0];
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}
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if(activeImage > 0){
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preloadPrevImage = new Image();
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preloadPrevImage.src = imageArray[activeImage - 1][0];
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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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Element.hide('lightbox');
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imageEffect.toggle();
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overlayEffect.custom(0.8,0);
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showSelectBoxes();
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}
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}
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// -----------------------------------------------------------------------------------
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//
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// getPageScroll()
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// Returns array with x,y page scroll values.
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// Core code from - quirksmode.org
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//
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function getPageScroll(){
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var yScroll;
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if (self.pageYOffset) {
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yScroll = self.pageYOffset;
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} else if (document.documentElement && document.documentElement.scrollTop){ // Explorer 6 Strict
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yScroll = document.documentElement.scrollTop;
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} else if (document.body) {// all other Explorers
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yScroll = document.body.scrollTop;
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}
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arrayPageScroll = new Array('',yScroll)
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return arrayPageScroll;
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}
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// -----------------------------------------------------------------------------------
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//
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// getPageSize()
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// Returns array with page width, height and window width, height
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// Core code from - quirksmode.org
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// Edit for Firefox by pHaez
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//
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function getPageSize(){
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var xScroll, yScroll;
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if (window.innerHeight && window.scrollMaxY) {
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xScroll = document.body.scrollWidth;
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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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}
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var windowWidth, windowHeight;
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if (self.innerHeight) { // all except Explorer
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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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}
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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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} else {
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pageHeight = yScroll;
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}
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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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} else {
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pageWidth = xScroll;
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}
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arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
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return arrayPageSize;
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}
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// -----------------------------------------------------------------------------------
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//
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// getKey(key)
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// Gets keycode. If 'x' is pressed then it hides the lightbox.
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//
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function getKey(e){
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if (e == null) { // ie
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keycode = event.keyCode;
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} else { // mozilla
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keycode = e.which;
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}
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key = String.fromCharCode(keycode).toLowerCase();
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if(key == 'x'){
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}
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}
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// -----------------------------------------------------------------------------------
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//
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// listenKey()
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//
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function listenKey () { document.onkeypress = getKey; }
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// ---------------------------------------------------
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function showSelectBoxes(){
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selects = document.getElementsByTagName("select");
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for (i = 0; i != selects.length; i++) {
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selects[i].style.visibility = "visible";
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}
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}
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// ---------------------------------------------------
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function hideSelectBoxes(){
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selects = document.getElementsByTagName("select");
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for (i = 0; i != selects.length; i++) {
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selects[i].style.visibility = "hidden";
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|
}
|
|
}
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|
|
|
// ---------------------------------------------------
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|
|
|
//
|
|
// pause(numberMillis)
|
|
// Pauses code execution for specified time. Uses busy code, not good.
|
|
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
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|
//
|
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function pause(numberMillis) {
|
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var now = new Date();
|
|
var exitTime = now.getTime() + numberMillis;
|
|
while (true) {
|
|
now = new Date();
|
|
if (now.getTime() > exitTime)
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return;
|
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}
|
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}
|
|
// ---------------------------------------------------
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|
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function initLightbox() { myLightbox = new Lightbox(); }
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