From 8df3db566a3a937b45ebf11adb90d265e6f5e2d4 Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sun, 17 Nov 2019 20:45:02 +0100 Subject: initial checking of customized version 1.0rc9 --- js/lightbox/js/lightbox.js | 497 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 497 insertions(+) create mode 100644 js/lightbox/js/lightbox.js (limited to 'js/lightbox/js/lightbox.js') diff --git a/js/lightbox/js/lightbox.js b/js/lightbox/js/lightbox.js new file mode 100644 index 0000000..2a9b1a7 --- /dev/null +++ b/js/lightbox/js/lightbox.js @@ -0,0 +1,497 @@ +// ----------------------------------------------------------------------------------- +// +// Lightbox v2.04 +// by Lokesh Dhakar - http://www.lokeshdhakar.com +// Last Modification: 2/9/08 +// +// For more information, visit: +// http://lokeshdhakar.com/projects/lightbox2/ +// +// Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/ +// - Free for use in both personal and commercial projects +// - Attribution requires leaving author name, author link, and the license info intact. +// +// Thanks: Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.com), and Thomas Fuchs(mir.aculo.us) for ideas, libs, and snippets. +// Artemy Tregubenko (arty.name) for cleanup and help in updating to latest ver of proto-aculous. +// +// ----------------------------------------------------------------------------------- +/* + + Table of Contents + ----------------- + Configuration + + Lightbox Class Declaration + - initialize() + - updateImageList() + - start() + - changeImage() + - resizeImageContainer() + - showImage() + - updateDetails() + - updateNav() + - enableKeyboardNav() + - disableKeyboardNav() + - keyboardAction() + - preloadNeighborImages() + - end() + + Function Calls + - document.observe() + +*/ +// ----------------------------------------------------------------------------------- + +// +// Configurationl +// +LightboxOptions = Object.extend({ + fileLoadingImage: 'js/lightbox/images/loading.gif', + fileBottomNavCloseImage: 'js/lightbox/images/closelabel.gif', + + overlayOpacity: 0.8, // controls transparency of shadow overlay + + animate: true, // toggles resizing animations + resizeSpeed: 7, // controls the speed of the image resizing animations (1=slowest and 10=fastest) + + borderSize: 10, //if you adjust the padding in the CSS, you will need to update this variable + + // When grouping images this is used to write: Image # of #. + // Change it for non-english localization + labelImage: "Image", + labelOf: "of" +}, window.LightboxOptions || {}); + +// ----------------------------------------------------------------------------------- + +var Lightbox = Class.create(); + +Lightbox.prototype = { + imageArray: [], + activeImage: undefined, + + // initialize() + // Constructor runs on completion of the DOM loading. Calls updateImageList and then + // the function inserts html at the bottom of the page which is used to display the shadow + // overlay and the image container. + // + initialize: function() { + + this.updateImageList(); + + this.keyboardAction = this.keyboardAction.bindAsEventListener(this); + + if (LightboxOptions.resizeSpeed > 10) LightboxOptions.resizeSpeed = 10; + if (LightboxOptions.resizeSpeed < 1) LightboxOptions.resizeSpeed = 1; + + this.resizeDuration = LightboxOptions.animate ? ((11 - LightboxOptions.resizeSpeed) * 0.15) : 0; + this.overlayDuration = LightboxOptions.animate ? 0.2 : 0; // shadow fade in/out duration + + // When Lightbox starts it will resize itself from 250 by 250 to the current image dimension. + // If animations are turned off, it will be hidden as to prevent a flicker of a + // white 250 by 250 box. + var size = (LightboxOptions.animate ? 250 : 1) + 'px'; + + + // Code inserts html at the bottom of the page that looks similar to this: + // + //
+ // + + + var objBody = $$('body')[0]; + + objBody.appendChild(Builder.node('div',{id:'overlay'})); + + objBody.appendChild(Builder.node('div',{id:'lightbox'}, [ + Builder.node('div',{id:'outerImageContainer'}, + Builder.node('div',{id:'imageContainer'}, [ + Builder.node('img',{id:'lightboxImage'}), + Builder.node('div',{id:'hoverNav'}, [ + Builder.node('a',{id:'prevLink', href: '#' }), + Builder.node('a',{id:'nextLink', href: '#' }) + ]), + Builder.node('div',{id:'loading'}, + Builder.node('a',{id:'loadingLink', href: '#' }, + Builder.node('img', {src: LightboxOptions.fileLoadingImage}) + ) + ) + ]) + ), + Builder.node('div', {id:'imageDataContainer'}, + Builder.node('div',{id:'imageData'}, [ + Builder.node('div',{id:'imageDetails'}, [ + Builder.node('span',{id:'caption'}), + Builder.node('span',{id:'numberDisplay'}) + ]), + Builder.node('div',{id:'bottomNav'}, + Builder.node('a',{id:'bottomNavClose', href: '#' }, + Builder.node('img', { src: LightboxOptions.fileBottomNavCloseImage }) + ) + ) + ]) + ) + ])); + + + $('overlay').hide().observe('click', (function() { this.end(); }).bind(this)); + $('lightbox').hide().observe('click', (function(event) { if (event.element().id == 'lightbox') this.end(); }).bind(this)); + $('outerImageContainer').setStyle({ width: size, height: size }); + $('prevLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage - 1); }).bindAsEventListener(this)); + $('nextLink').observe('click', (function(event) { event.stop(); this.changeImage(this.activeImage + 1); }).bindAsEventListener(this)); + $('loadingLink').observe('click', (function(event) { event.stop(); this.end(); }).bind(this)); + $('bottomNavClose').observe('click', (function(event) { event.stop(); this.end(); }).bind(this)); + + var th = this; + (function(){ + var ids = + 'overlay lightbox outerImageContainer imageContainer lightboxImage hoverNav prevLink nextLink loading loadingLink ' + + 'imageDataContainer imageData imageDetails caption numberDisplay bottomNav bottomNavClose'; + $w(ids).each(function(id){ th[id] = $(id); }); + }).defer(); + }, + + // + // updateImageList() + // Loops through anchor tags looking for 'lightbox' references and applies onclick + // events to appropriate links. You can rerun after dynamically adding images w/ajax. + // + updateImageList: function() { + this.updateImageList = Prototype.emptyFunction; + + document.observe('click', (function(event){ + var target = event.findElement('a[rel^=lightbox]') || event.findElement('area[rel^=lightbox]'); + if (target) { + event.stop(); + this.start(target); + } + }).bind(this)); + }, + + // + // start() + // Display overlay and lightbox. If image is part of a set, add siblings to imageArray. + // + start: function(imageLink) { + + $$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'hidden' }); + + // stretch overlay to fill page and fade in + var arrayPageSize = this.getPageSize(); + $('overlay').setStyle({ width: arrayPageSize[0] + 'px', height: arrayPageSize[1] + 'px' }); + + new Effect.Appear(this.overlay, { duration: this.overlayDuration, from: 0.0, to: LightboxOptions.overlayOpacity }); + + this.imageArray = []; + var imageNum = 0; + + if ((imageLink.rel == 'lightbox')){ + // if image is NOT part of a set, add single image to imageArray + this.imageArray.push([imageLink.href, imageLink.title]); + } else { + // if image is part of a set.. + this.imageArray = + $$(imageLink.tagName + '[href][rel="' + imageLink.rel + '"]'). + collect(function(anchor){ return [anchor.href, anchor.title]; }). + uniq(); + + while (this.imageArray[imageNum][0] != imageLink.href) { imageNum++; } + } + + // calculate top and left offset for the lightbox + var arrayPageScroll = document.viewport.getScrollOffsets(); + var lightboxTop = arrayPageScroll[1] + (document.viewport.getHeight() / 10); + var lightboxLeft = arrayPageScroll[0]; + this.lightbox.setStyle({ top: lightboxTop + 'px', left: lightboxLeft + 'px' }).show(); + + this.changeImage(imageNum); + }, + + // + // changeImage() + // Hide most elements and preload image in preparation for resizing image container. + // + changeImage: function(imageNum) { + + this.activeImage = imageNum; // update global var + + // hide elements during transition + if (LightboxOptions.animate) this.loading.show(); + this.lightboxImage.hide(); + this.hoverNav.hide(); + this.prevLink.hide(); + this.nextLink.hide(); + // HACK: Opera9 does not currently support scriptaculous opacity and appear fx + this.imageDataContainer.setStyle({opacity: .0001}); + this.numberDisplay.hide(); + + var imgPreloader = new Image(); + + // once image is preloaded, resize image container + + + imgPreloader.onload = (function(){ + this.lightboxImage.src = this.imageArray[this.activeImage][0]; + this.resizeImageContainer(imgPreloader.width, imgPreloader.height); + }).bind(this); + imgPreloader.src = this.imageArray[this.activeImage][0]; + }, + + // + // resizeImageContainer() + // + resizeImageContainer: function(imgWidth, imgHeight) { + + // get current width and height + var widthCurrent = this.outerImageContainer.getWidth(); + var heightCurrent = this.outerImageContainer.getHeight(); + + // get new width and height + var widthNew = (imgWidth + LightboxOptions.borderSize * 2); + var heightNew = (imgHeight + LightboxOptions.borderSize * 2); + + // scalars based on change from old to new + var xScale = (widthNew / widthCurrent) * 100; + var yScale = (heightNew / heightCurrent) * 100; + + // calculate size difference between new and old image, and resize if necessary + var wDiff = widthCurrent - widthNew; + var hDiff = heightCurrent - heightNew; + + if (hDiff != 0) new Effect.Scale(this.outerImageContainer, yScale, {scaleX: false, duration: this.resizeDuration, queue: 'front'}); + if (wDiff != 0) new Effect.Scale(this.outerImageContainer, xScale, {scaleY: false, duration: this.resizeDuration, delay: this.resizeDuration}); + + // if new and old image are same size and no scaling transition is necessary, + // do a quick pause to prevent image flicker. + var timeout = 0; + if ((hDiff == 0) && (wDiff == 0)){ + timeout = 100; + if (Prototype.Browser.IE) timeout = 250; + } + + (function(){ + this.prevLink.setStyle({ height: imgHeight + 'px' }); + this.nextLink.setStyle({ height: imgHeight + 'px' }); + this.imageDataContainer.setStyle({ width: widthNew + 'px' }); + + this.showImage(); + }).bind(this).delay(timeout / 1000); + }, + + // + // showImage() + // Display image and begin preloading neighbors. + // + showImage: function(){ + this.loading.hide(); + new Effect.Appear(this.lightboxImage, { + duration: this.resizeDuration, + queue: 'end', + afterFinish: (function(){ this.updateDetails(); }).bind(this) + }); + this.preloadNeighborImages(); + }, + + // + // updateDetails() + // Display caption, image number, and bottom nav. + // + updateDetails: function() { + + // if caption is not null + if (this.imageArray[this.activeImage][1] != ""){ + this.caption.update(this.imageArray[this.activeImage][1]).show(); + } + + // if image is part of set display 'Image x of x' + if (this.imageArray.length > 1){ + this.numberDisplay.update( LightboxOptions.labelImage + ' ' + (this.activeImage + 1) + ' ' + LightboxOptions.labelOf + ' ' + this.imageArray.length).show(); + } + + new Effect.Parallel( + [ + new Effect.SlideDown(this.imageDataContainer, { sync: true, duration: this.resizeDuration, from: 0.0, to: 1.0 }), + new Effect.Appear(this.imageDataContainer, { sync: true, duration: this.resizeDuration }) + ], + { + duration: this.resizeDuration, + afterFinish: (function() { + // update overlay size and update nav + var arrayPageSize = this.getPageSize(); + this.overlay.setStyle({ height: arrayPageSize[1] + 'px' }); + this.updateNav(); + }).bind(this) + } + ); + }, + + // + // updateNav() + // Display appropriate previous and next hover navigation. + // + updateNav: function() { + + this.hoverNav.show(); + + // if not first image in set, display prev image button + if (this.activeImage > 0) this.prevLink.show(); + + // if not last image in set, display next image button + if (this.activeImage < (this.imageArray.length - 1)) this.nextLink.show(); + + this.enableKeyboardNav(); + }, + + // + // enableKeyboardNav() + // + enableKeyboardNav: function() { + document.observe('keydown', this.keyboardAction); + }, + + // + // disableKeyboardNav() + // + disableKeyboardNav: function() { + document.stopObserving('keydown', this.keyboardAction); + }, + + // + // keyboardAction() + // + keyboardAction: function(event) { + var keycode = event.keyCode; + + var escapeKey; + if (event.DOM_VK_ESCAPE) { // mozilla + escapeKey = event.DOM_VK_ESCAPE; + } else { // ie + escapeKey = 27; + } + + var key = String.fromCharCode(keycode).toLowerCase(); + + if (key.match(/x|o|c/) || (keycode == escapeKey)){ // close lightbox + this.end(); + } else if ((key == 'p') || (keycode == 37)){ // display previous image + if (this.activeImage != 0){ + this.disableKeyboardNav(); + this.changeImage(this.activeImage - 1); + } + } else if ((key == 'n') || (keycode == 39)){ // display next image + if (this.activeImage != (this.imageArray.length - 1)){ + this.disableKeyboardNav(); + this.changeImage(this.activeImage + 1); + } + } + }, + + // + // preloadNeighborImages() + // Preload previous and next images. + // + preloadNeighborImages: function(){ + var preloadNextImage, preloadPrevImage; + if (this.imageArray.length > this.activeImage + 1){ + preloadNextImage = new Image(); + preloadNextImage.src = this.imageArray[this.activeImage + 1][0]; + } + if (this.activeImage > 0){ + preloadPrevImage = new Image(); + preloadPrevImage.src = this.imageArray[this.activeImage - 1][0]; + } + + }, + + // + // end() + // + end: function() { + this.disableKeyboardNav(); + this.lightbox.hide(); + new Effect.Fade(this.overlay, { duration: this.overlayDuration }); + $$('select', 'object', 'embed').each(function(node){ node.style.visibility = 'visible' }); + }, + + // + // getPageSize() + // + getPageSize: function() { + + var xScroll, yScroll; + + if (window.innerHeight && window.scrollMaxY) { + xScroll = window.innerWidth + window.scrollMaxX; + 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 + if(document.documentElement.clientWidth){ + windowWidth = document.documentElement.clientWidth; + } else { + 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 = xScroll; + } else { + pageWidth = windowWidth; + } + + return [pageWidth,pageHeight]; + } +} + +document.observe('dom:loaded', function () { new Lightbox(); }); -- cgit v1.2.3-54-g00ecf