?? lightbox.js
字號(hào):
// -----------------------------------------------------------------------------------
//
// Lightbox v2.02
// by Lokesh Dhakar - http://www.huddletogether.com
// 3/31/06
//
// For more information on this script, visit:
// http://huddletogether.com/projects/lightbox2/
//
// Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
//
// Credit also due to those who have helped, inspired, and made their code available to the public.
// Including: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.org), Thomas Fuchs(mir.aculo.us), and others.
//
//
// -----------------------------------------------------------------------------------
/*
Table of Contents
-----------------
Configuration
Global Variables
Extending Built-in Objects
- Object.extend(Element)
- Array.prototype.removeDuplicates()
- Array.prototype.empty()
Lightbox Class Declaration
- initialize()
- start()
- changeImage()
- resizeImageContainer()
- showImage()
- updateDetails()
- updateNav()
- enableKeyboardNav()
- disableKeyboardNav()
- keyboardAction()
- preloadNeighborImages()
- end()
Miscellaneous Functions
- getPageScroll()
- getPageSize()
- getKey()
- listenKey()
- showSelectBoxes()
- hideSelectBoxes()
- pause()
- initLightbox()
Function Calls
- addLoadEvent(initLightbox)
*/
// -----------------------------------------------------------------------------------
//
// Configuration
//
var fileLoadingImage = "/images/common/loading.gif";
var fileBottomNavCloseImage = "NavCloseImage.jpg";//TODO modify for yours
var fileBottomNavPreImage = "NavPreImage.jpg";
var fileBottomNavNextImage = "NavNextImage.jpg";
var fileBottomNavFavoriteImage = "NavFavoriteImage.jpg";
var fileBottomNavPrintImage = "NavPrintImage.jpg";
var resizeSpeed = 7; // controls the speed of the image resizing (1=slowest and 10=fastest)
var borderSize = 10; //if you adjust the padding in the CSS, you will need to update this variable
// -----------------------------------------------------------------------------------
//
// Global Variables
//
var imageArray = new Array;
var activeImage;
if(resizeSpeed > 10){ resizeSpeed = 10;}
if(resizeSpeed < 1){ resizeSpeed = 1;}
resizeDuration = (11 - resizeSpeed) * 0.15;
// -----------------------------------------------------------------------------------
//
// Additional methods for Element added by SU, Couloir
// - further additions by Lokesh Dhakar (huddletogether.com)
//
Object.extend(Element, {
getWidth: function(element) {
element = $(element);
return element.offsetWidth;
},
setWidth: function(element,w) {
element = $(element);
element.style.width = w +"px";
},
setHeight: function(element,h) {
element = $(element);
element.style.height = h +"px";
},
setTop: function(element,t) {
element = $(element);
element.style.top = t +"px";
},
setSrc: function(element,src) {
element = $(element);
element.src = src;
},
setHref: function(element,href) {
element = $(element);
element.href = href;
},
setInnerHTML: function(element,content) {
element = $(element);
element.innerHTML = content;
}
});
// -----------------------------------------------------------------------------------
//
// Extending built-in Array object
// - array.removeDuplicates()
// - array.empty()
//
Array.prototype.removeDuplicates = function () {
for(i = 1; i < this.length; i++){
if(this[i][0] == this[i-1][0]){
this.splice(i,1);
}
}
}
// -----------------------------------------------------------------------------------
Array.prototype.empty = function () {
for(i = 0; i <= this.length; i++){
this.shift();
}
}
// -----------------------------------------------------------------------------------
//
// Lightbox Class Declaration
// - initialize()
// - start()
// - changeImage()
// - resizeImageContainer()
// - showImage()
// - updateDetails()
// - updateNav()
// - enableKeyboardNav()
// - disableKeyboardNav()
// - keyboardNavAction()
// - preloadNeighborImages()
// - end()
//
// Structuring of code inspired by Scott Upton (http://www.uptonic.com/)
//
var Lightbox = Class.create();
Lightbox.prototype = {
// initialize()
// Constructor runs on completion of the DOM loading. Loops through anchor tags looking for
// 'lightbox' references and applies onclick events to appropriate links. The 2nd section of
// the function inserts html at the bottom of the page which is used to display the shadow
// overlay and the image container.
//
initialize: function() {
if (!document.getElementsByTagName){ return; }
var anchors = document.getElementsByTagName('a');
// loop through all anchor tags
for (var i=0; i<anchors.length; i++){
var anchor = anchors[i];
var relAttribute = String(anchor.getAttribute('rel'));
// use the string.match() method to catch 'lightbox' references in the rel attribute
anchor.onclick = function () {myLightbox.start(this); return false;}
}
}
// The rest of this code inserts html at the bottom of the page that looks similar to this:
//
// <div id="overlay"></div>
// <div id="lightbox">
// <div id="outerImageContainer">
// <div id="imageContainer">
// <img id="lightboxImage">
// <div style="" id="hoverNav">
// <a href="#" id="prevLink"></a>
// <a href="#" id="nextLink"></a>
// </div>
// <div id="loading">
// <a href="#" id="loadingLink">
// <img src="images/loading.gif">
// </a>
// </div>
// </div>
// </div>
// <div id="imageDataContainer">
// <div id="imageData">
// <div id="imageDetails">
// <span id="caption"></span>
// <span id="numberDisplay"></span>
// </div>
// <div id="bottomNav">
// <a href="#" id="bottomNavClose">
// <img src="images/close.gif">
// </a>
// </div>
// </div>
// </div>
// </div>
var objBody = document.getElementsByTagName("body").item(0);
var objOverlay = document.createElement("div");
objOverlay.setAttribute('id','overlay');
objOverlay.style.display = 'none';
objOverlay.onclick = function() { myLightbox.end(); return false; }
objBody.appendChild(objOverlay);
var objLightbox = document.createElement("div");
objLightbox.setAttribute('id','lightbox');
objLightbox.style.display = 'none';
objBody.appendChild(objLightbox);
var objLightCenterbox = document.createElement("table");
objLightCenterbox.setAttribute('id','lightCenterbox');
objLightCenterbox.setAttribute('cellpadding','0px');
objLightCenterbox.setAttribute('cellspacing','0px');
objLightCenterbox.setAttribute('border','0');
objLightbox.appendChild(objLightCenterbox);
var tbody = document.createElement("tbody");
objLightCenterbox.appendChild(tbody);
var tr = document.createElement("tr");
tbody.appendChild(tr);
var td1 = document.createElement("td");
tr.appendChild(td1);
var td2 = document.createElement("td");
td2.setAttribute('valign','center');
tr.appendChild(td2);
var objOuterImageContainer = document.createElement("div");
objOuterImageContainer.setAttribute('id','outerImageContainer');
td1.appendChild(objOuterImageContainer);
var objImageContainer = document.createElement("div");
objImageContainer.setAttribute('id','imageContainer');
objOuterImageContainer.appendChild(objImageContainer);
var objLightboxImage = document.createElement("img");
objLightboxImage.setAttribute('id','lightboxImage');
objImageContainer.appendChild(objLightboxImage);
var objHoverNav = document.createElement("div");
objHoverNav.setAttribute('id','hoverNav');
objImageContainer.appendChild(objHoverNav);
var objPrevLink = document.createElement("a");
objPrevLink.setAttribute('id','prevLink');
objPrevLink.setAttribute('href','#');
objHoverNav.appendChild(objPrevLink);
var objNextLink = document.createElement("a");
objNextLink.setAttribute('id','nextLink');
objNextLink.setAttribute('href','#');
objHoverNav.appendChild(objNextLink);
var objLoading = document.createElement("div");
objLoading.setAttribute('id','loading');
objImageContainer.appendChild(objLoading);
var objLoadingLink = document.createElement("a");
objLoadingLink.setAttribute('id','loadingLink');
objLoadingLink.setAttribute('href','#');
objLoadingLink.onclick = function() { myLightbox.end(); return false; }
objLoading.appendChild(objLoadingLink);
var objLoadingImage = document.createElement("img");
objLoadingImage.setAttribute('src', fileLoadingImage);
objLoadingLink.appendChild(objLoadingImage);
var objImageDataContainer = document.createElement("div");
objImageDataContainer.setAttribute('id','imageDataContainer');
objImageDataContainer.className = 'clearfix';
td2.appendChild(objImageDataContainer);
var objImageData = document.createElement("div");
objImageData.setAttribute('id','imageData');
objImageDataContainer.appendChild(objImageData);
var objBottomNav = document.createElement("div");
objBottomNav.setAttribute('id','bottomNav');
objImageData.appendChild(objBottomNav);
var objBottomNavCloseLink = document.createElement("a");
objBottomNavCloseLink.setAttribute('id','bottomNavClose');
objBottomNavCloseLink.setAttribute('href','#');
objBottomNavCloseLink.onclick = function() { myLightbox.end(); return false; }
objBottomNav.appendChild(objBottomNavCloseLink);
var objBottomNavCloseImage = document.createElement("img");
objBottomNavCloseImage.setAttribute('src', fileBottomNavCloseImage);
objBottomNavCloseLink.appendChild(objBottomNavCloseImage);
var objBottomNavPreLink = document.createElement("a");
objBottomNavPreLink.setAttribute('id','bottomNavPre');
objBottomNavPreLink.setAttribute('href','#');
objBottomNavPreLink.onclick = function() {
if(activeImage != 0){
myLightbox.changeImage(activeImage - 1);
objOuterImageContainer.style.cursor = this.cursor = preCursor;
}
return false;
}
objBottomNav.appendChild(objBottomNavPreLink);
var objBottomNavPreImage = document.createElement("img");
objBottomNavPreImage.setAttribute('src', fileBottomNavPreImage);
objBottomNavPreLink.appendChild(objBottomNavPreImage);
var objBottomNavNextLink = document.createElement("a");
objBottomNavNextLink.setAttribute('id','bottomNavNext');
objBottomNavNextLink.setAttribute('href','#');
objBottomNavNextLink.onclick = function() {
if(activeImage != (imageArray.length - 1)){
myLightbox.changeImage(activeImage + 1);
objOuterImageContainer.style.cursor = this.cursor = nextCursor;
}
return false;
}
objBottomNav.appendChild(objBottomNavNextLink);
var objBottomNavNextImage = document.createElement("img");
objBottomNavNextImage.setAttribute('src', fileBottomNavNextImage);
objBottomNavNextLink.appendChild(objBottomNavNextImage);
var objBottomNavFavoriteLink = document.createElement("a");
objBottomNavFavoriteLink.setAttribute('id','bottomNavFavorite');
objBottomNavFavoriteLink.setAttribute('href','#');
objBottomNavFavoriteLink.onclick = function() { return false; }
objBottomNav.appendChild(objBottomNavFavoriteLink);
var objBottomNavFavoriteImage = document.createElement("img");
objBottomNavFavoriteImage.setAttribute('src', fileBottomNavFavoriteImage);
objBottomNavFavoriteLink.appendChild(objBottomNavFavoriteImage);
var objBottomNavPrintLink = document.createElement("a");
objBottomNavPrintLink.setAttribute('id','bottomNavPrint');
objBottomNavPrintLink.setAttribute('href','#');
objBottomNavPrintLink.onclick = function() { return false; }
objBottomNav.appendChild(objBottomNavPrintLink);
var objBottomNavPrintImage = document.createElement("img");
objBottomNavPrintImage.setAttribute('src', fileBottomNavPrintImage);
objBottomNavPrintLink.appendChild(objBottomNavPrintImage);
var objImageDetails = document.createElement("div");
objImageDetails.setAttribute('id','imageDetails');
objImageData.appendChild(objImageDetails);
var objCaption = document.createElement("span");
objCaption.setAttribute('id','caption');
objImageDetails.appendChild(objCaption);
var objNumberDisplay = document.createElement("span");
objNumberDisplay.setAttribute('id','numberDisplay');
objImageDetails.appendChild(objNumberDisplay);
objLightboxImage.onmousemove = function(e) {
var event = e || window.event;
if (typeof event.offsetX == "undefined") {
event.offsetX = event.layerX;
}
var width = this.offsetWidth;
if (event.offsetX < width / 2) {
if(activeImage != 0){
this.style.cursor = this.cursor = preCursor;
this.alt = "點(diǎn)擊跳到上一頁(yè)";
this.title = "點(diǎn)擊跳到上一頁(yè)";
} else {
this.style.cursor = this.cursor = "default";
this.alt = "";
this.title = "";
}
} else {
if(activeImage != (imageArray.length - 1)){
this.style.cursor = this.cursor = nextCursor;
this.alt = "點(diǎn)擊跳到下一頁(yè)";
this.title = "點(diǎn)擊跳到下一頁(yè)";
} else {
this.style.cursor = this.cursor = "default";
this.alt = "";
this.title = "";
}
}
}
objLightboxImage.onclick = function(e) {
var event = e || window.event;
if (typeof event.offsetX == "undefined") {
event.offsetX = event.layerX;
}
var width = this.offsetWidth;
if (event.offsetX < width / 2) {
if(activeImage != 0){
myLightbox.changeImage(activeImage - 1);
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