dthumb

diff --git a/share/lightbox.js b/share/lightbox.js new file mode 100644 index 0000000..df9e8e4 --- /dev/null +++ b/share/lightbox.js @@ -0,0 +1,437 @@ +/* + Lightbox JS: Fullsize Image Overlays + by Lokesh Dhakar - http://www.huddletogether.com + + For more information on this script, visit: + http://huddletogether.com/projects/lightbox/ + + Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/ + (basically, do anything you want, just leave my name and link) + + Table of Contents + ----------------- + Configuration + + Functions + - getPageScroll() + - getPageSize() + - pause() + - getKey() + - listenKey() + - showLightbox() + - hideLightbox() + - initLightbox() + - addLoadEvent() + + Function Calls + - addLoadEvent(initLightbox) + +*/ + + + +// +// Configuration +// + +// If you would like to use a custom loading image or close button reference them in the next two lines. +var loadingImage = '.dthumb/loading.gif'; +var closeButton = '.dthumb/close.gif'; + + + + + +// +// getPageScroll() +// Returns array with x,y page scroll values. +// Core code from - quirksmode.org +// +function getPageScroll(){ + + var yScroll; + + if (self.pageYOffset) { + yScroll = self.pageYOffset; + } else if (document.documentElement && document.documentElement.scrollTop){ // Explorer 6 Strict + yScroll = document.documentElement.scrollTop; + } else if (document.body) {// all other Explorers + yScroll = document.body.scrollTop; + } + + arrayPageScroll = new Array('',yScroll) + return arrayPageScroll; +} + + + +// +// getPageSize() +// Returns array with page width, height and window width, height +// Core code from - quirksmode.org +// Edit for Firefox by pHaez +// +function getPageSize(){ + + var xScroll, yScroll; + + if (window.innerHeight && window.scrollMaxY) { + xScroll = document.body.scrollWidth; + yScroll = window.innerHeight + window.scrollMaxY; + } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac + xScroll = document.body.scrollWidth; + yScroll = document.body.scrollHeight; + } else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari + xScroll = document.body.offsetWidth; + yScroll = document.body.offsetHeight; + } + + var windowWidth, windowHeight; + if (self.innerHeight) { // all except Explorer + windowWidth = self.innerWidth; + windowHeight = self.innerHeight; + } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode + windowWidth = document.documentElement.clientWidth; + windowHeight = document.documentElement.clientHeight; + } else if (document.body) { // other Explorers + windowWidth = document.body.clientWidth; + windowHeight = document.body.clientHeight; + } + + // for small pages with total height less then height of the viewport + if(yScroll < windowHeight){ + pageHeight = windowHeight; + } else { + pageHeight = yScroll; + } + + // for small pages with total width less then width of the viewport + if(xScroll < windowWidth){ + pageWidth = windowWidth; + } else { + pageWidth = xScroll; + } + + + arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) + return arrayPageSize; +} + + +// +// 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 +// +function pause(numberMillis) { + var now = new Date(); + var exitTime = now.getTime() + numberMillis; + while (true) { + now = new Date(); + if (now.getTime() > exitTime) + return; + } +} + +// +// getKey(key) +// Gets keycode. If 'x' is pressed then it hides the lightbox. +// + +function getKey(e){ + if (e == null) { // ie + keycode = event.keyCode; + } else { // mozilla + keycode = e.which; + } + key = String.fromCharCode(keycode).toLowerCase(); + + if(key == 'x'){ hideLightbox(); } +} + + +// +// listenKey() +// +function listenKey () { document.onkeypress = getKey; } + + +// +// showLightbox() +// Preloads images. Pleaces new image in lightbox then centers and displays. +// +function showLightbox(objLink) +{ + // prep objects + var objOverlay = document.getElementById('overlay'); + var objLightbox = document.getElementById('lightbox'); + var objCaption = document.getElementById('lightboxCaption'); + var objImage = document.getElementById('lightboxImage'); + var objLoadingImage = document.getElementById('loadingImage'); + var objLightboxDetails = document.getElementById('lightboxDetails'); + + + var arrayPageSize = getPageSize(); + var arrayPageScroll = getPageScroll(); + + // center loadingImage if it exists + if (objLoadingImage) { + objLoadingImage.style.top = (arrayPageScroll[1] + ((arrayPageSize[3] - 35 - objLoadingImage.height) / 2) + 'px'); + objLoadingImage.style.left = (((arrayPageSize[0] - 20 - objLoadingImage.width) / 2) + 'px'); + objLoadingImage.style.display = 'block'; + } + + // set height of Overlay to take up whole page and show + objOverlay.style.height = (arrayPageSize[1] + 'px'); + objOverlay.style.display = 'block'; + + // preload image + imgPreload = new Image(); + + imgPreload.onload=function(){ + objImage.src = objLink.href; + + // center lightbox and make sure that the top and left values are not negative + // and the image placed outside the viewport + var lightboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2); + var lightboxLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2); + + objLightbox.style.top = (lightboxTop < 0) ? "0px" : lightboxTop + "px"; + objLightbox.style.left = (lightboxLeft < 0) ? "0px" : lightboxLeft + "px"; + + + objLightboxDetails.style.width = imgPreload.width + 'px'; + + if(objLink.getAttribute('title')){ + objCaption.style.display = 'block'; + //objCaption.style.width = imgPreload.width + 'px'; + objCaption.innerHTML = objLink.getAttribute('title'); + } else { + objCaption.style.display = 'none'; + } + + // A small pause between the image loading and displaying is required with IE, + // this prevents the previous image displaying for a short burst causing flicker. + if (navigator.appVersion.indexOf("MSIE")!=-1){ + pause(250); + } + + if (objLoadingImage) { objLoadingImage.style.display = 'none'; } + + // Hide select boxes as they will 'peek' through the image in IE + selects = document.getElementsByTagName("select"); + for (i = 0; i != selects.length; i++) { + selects[i].style.visibility = "hidden"; + } + + + objLightbox.style.display = 'block'; + + // After image is loaded, update the overlay height as the new image might have + // increased the overall page height. + arrayPageSize = getPageSize(); + objOverlay.style.height = (arrayPageSize[1] + 'px'); + + // Check for 'x' keypress + listenKey(); + + return false; + } + + imgPreload.src = objLink.href; + +} + + + + + +// +// hideLightbox() +// +function hideLightbox() +{ + // get objects + objOverlay = document.getElementById('overlay'); + objLightbox = document.getElementById('lightbox'); + + // hide lightbox and overlay + objOverlay.style.display = 'none'; + objLightbox.style.display = 'none'; + + // make select boxes visible + selects = document.getElementsByTagName("select"); + for (i = 0; i != selects.length; i++) { + selects[i].style.visibility = "visible"; + } + + // disable keypress listener + document.onkeypress = ''; +} + + + + +// +// initLightbox() +// Function runs on window load, going through link tags looking for rel="lightbox". +// These links receive onclick events that enable the lightbox display for their targets. +// The function also inserts html markup at the top of the page which will be used as a +// container for the overlay pattern and the inline image. +// +function initLightbox() +{ + + if (!document.getElementsByTagName){ return; } + var anchors = document.getElementsByTagName("a"); + + // loop through all anchor tags + for (var i=0; i + // + //