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From 2011.igem.org

/* Ultimate Fade-in slideshow (v2.4)

• Last updated: May 24th, 2010. This notice must stay intact for usage
• Author: Dynamic Drive at http://www.dynamicdrive.com/
• Visit http://www.dynamicdrive.com/ for full source code
• /

//Oct 6th, 09' (v2.1): Adds option to randomize display order of images, via new option displaymode.randomize //May 24th, 10' (v2.4): Adds new "peakaboo" option to "descreveal" setting. oninit and onslide event handlers added.

var fadeSlideShow_descpanel={ controls: [['x.png',7,7], ['restore.png',10,11], ['loading.gif',54,55]], //full URL and dimensions of close, restore, and loading images fontStyle: 'normal 11px Verdana', //font style for text descriptions slidespeed: 200 //speed of description panel animation (in millisec) }

//No need to edit beyond here...

jQuery.noConflict()

function fadeSlideShow(settingarg){ this.setting=settingarg settingarg=null var setting=this.setting setting.fadeduration=setting.fadeduration? parseInt(setting.fadeduration) : 500 setting.curimage=(setting.persist)? fadeSlideShow.routines.getCookie("gallery-"+setting.wrapperid) : 0 setting.curimage=setting.curimage || 0 //account for curimage being null if cookie is empty setting.currentstep=0 //keep track of # of slides slideshow has gone through (applicable in displaymode='auto' only) setting.totalsteps=setting.imagearray.length*(setting.displaymode.cycles>0? setting.displaymode.cycles : Infinity) //Total steps limit (applicable in displaymode='auto' only w/ cycles>0) setting.fglayer=0, setting.bglayer=1 //index of active and background layer (switches after each change of slide) setting.oninit=setting.oninit || function(){} setting.onslide=setting.onslide || function(){} if (setting.displaymode.randomize) //randomly shuffle order of images? setting.imagearray.sort(function() {return 0.5 - Math.random()}) var preloadimages=[] //preload images setting.longestdesc="" //get longest description of all slides. If no desciptions defined, variable contains "" for (var i=0; i<setting.imagearray.length; i++){ //preload images preloadimages[i]=new Image() preloadimages[i].src=setting.imagearray[i][0] if (setting.imagearray[i][3] && setting.imagearray[i][3].length>setting.longestdesc.length) setting.longestdesc=setting.imagearray[i][3] } var closebutt=fadeSlideShow_descpanel.controls[0] //add close button to "desc" panel if descreveal="always" setting.closebutton=(setting.descreveal=="always")? '<img class="close" src="'+closebutt[0]+'" style="float:right;cursor:hand;cursor:pointer;width:'+closebutt[1]+'px;height:'+closebutt[2]+'px;margin-left:2px" title="Hide Description" />' : var slideshow=this jQuery(document).ready(function($){ //fire on DOM ready var setting=slideshow.setting var fullhtml=fadeSlideShow.routines.getFullHTML(setting.imagearray) //get full HTML of entire slideshow setting.$wrapperdiv=$('#'+setting.wrapperid).css({position:'relative', visibility:'visible', background:'black', overflow:'hidden', width:setting.dimensions[0], height:setting.dimensions[1]}).empty() //main slideshow DIV if (setting.$wrapperdiv.length==0){ //if no wrapper DIV found alert("Error: DIV with ID \""+setting.wrapperid+"\" not found on page.") return }

setting.$gallerylayers=$('') //two stacked DIVs to display the actual slide

.css({position:'absolute', left:0, top:0, width:'100%', height:'100%', background:'black'}) .appendTo(setting.$wrapperdiv) var $loadingimg=$('<img src="'+fadeSlideShow_descpanel.controls[2][0]+'" style="position:absolute;width:'+fadeSlideShow_descpanel.controls[2][1]+';height:'+fadeSlideShow_descpanel.controls[2][2]+'" />') .css({left:setting.dimensions[0]/2-fadeSlideShow_descpanel.controls[2][1]/2, top:setting.dimensions[1]/2-fadeSlideShow_descpanel.controls[2][2]}) //center loading gif .appendTo(setting.$wrapperdiv) var $curimage=setting.$gallerylayers.html(fullhtml).find('img').hide().eq(setting.curimage) //prefill both layers with entire slideshow content, hide all images, and return current image if (setting.longestdesc!="" && setting.descreveal!="none"){ //if at least one slide contains a description (versus feature is enabled but no descriptions defined) and descreveal not explicitly disabled fadeSlideShow.routines.adddescpanel($, setting) if (setting.descreveal=="always"){ //position desc panel so it's visible to begin with setting.$descpanel.css({top:setting.dimensions[1]-setting.panelheight}) setting.$descinner.click(function(e){ //asign click behavior to "close" icon if (e.target.className=="close"){ slideshow.showhidedescpanel('hide') } }) setting.$restorebutton.click(function(e){ //asign click behavior to "restore" icon slideshow.showhidedescpanel('show') $(this).css({visibility:'hidden'}) }) } else if (setting.descreveal=="ondemand"){ //display desc panel on demand (mouseover) setting.$wrapperdiv.bind('mouseenter', function(){slideshow.showhidedescpanel('show')}) setting.$wrapperdiv.bind('mouseleave', function(){slideshow.showhidedescpanel('hide')}) } } setting.$wrapperdiv.bind('mouseenter', function(){setting.ismouseover=true}) //pause slideshow mouseover setting.$wrapperdiv.bind('mouseleave', function(){setting.ismouseover=false}) if ($curimage.get(0).complete){ //accounf for IE not firing image.onload $loadingimg.hide() slideshow.paginateinit($) slideshow.showslide(setting.curimage) } else{ //initialize slideshow when first image has fully loaded $loadingimg.hide() slideshow.paginateinit($) $curimage.bind('load', function(){slideshow.showslide(setting.curimage)}) } setting.oninit.call(slideshow) //trigger oninit() event $(window).bind('unload', function(){ //clean up and persist if (slideshow.setting.persist) //remember last shown image's index fadeSlideShow.routines.setCookie("gallery-"+setting.wrapperid, setting.curimage) jQuery.each(slideshow.setting, function(k){ if (slideshow.setting[k] instanceof Array){ for (var i=0; i<slideshow.setting[k].length; i++){ if (slideshow.setting[k][i].tagName=="DIV") //catches 2 gallerylayer divs, gallerystatus div slideshow.setting[k][i].innerHTML=null slideshow.setting[k][i]=null } } }) slideshow=slideshow.setting=null }) }) }

fadeSlideShow.prototype={

navigate:function(keyword){ var setting=this.setting clearTimeout(setting.playtimer) if (setting.displaymode.type=="auto"){ //in auto mode setting.displaymode.type="manual" //switch to "manual" mode when nav buttons are clicked on setting.displaymode.wraparound=true //set wraparound option to true } if (!isNaN(parseInt(keyword))){ //go to specific slide? this.showslide(parseInt(keyword)) } else if (/(prev)|(next)/i.test(keyword)){ //go back or forth inside slide? this.showslide(keyword.toLowerCase()) } },

showslide:function(keyword){ var slideshow=this var setting=slideshow.setting if (setting.displaymode.type=="auto" && setting.ismouseover && setting.currentstep<=setting.totalsteps){ //if slideshow in autoplay mode and mouse is over it, pause it setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.displaymode.pause) return } var totalimages=setting.imagearray.length var imgindex=(keyword=="next")? (setting.curimage<totalimages-1? setting.curimage+1 : 0) : (keyword=="prev")? (setting.curimage>0? setting.curimage-1 : totalimages-1) : Math.min(keyword, totalimages-1) var $slideimage=setting.$gallerylayers.eq(setting.bglayer).find('img').hide().eq(imgindex).show() //hide all images except current one var imgdimensions=[$slideimage.width(), $slideimage.height()] //center align image $slideimage.css({marginLeft: (imgdimensions[0]>0 && imgdimensions[0]<setting.dimensions[0])? setting.dimensions[0]/2-imgdimensions[0]/2 : 0}) $slideimage.css({marginTop: (imgdimensions[1]>0 && imgdimensions[1]<setting.dimensions[1])? setting.dimensions[1]/2-imgdimensions[1]/2 : 0}) if (setting.descreveal=="peekaboo" && setting.longestdesc!=""){ //if descreveal is set to "peekaboo", make sure description panel is hidden before next slide is shown clearTimeout(setting.hidedesctimer) //clear hide desc panel timer slideshow.showhidedescpanel('hide', 0) //and hide it immediately } setting.$gallerylayers.eq(setting.bglayer).css({zIndex:1000, opacity:0}) //background layer becomes foreground .stop().css({opacity:0}).animate({opacity:1}, setting.fadeduration, function(){ //Callback function after fade animation is complete: clearTimeout(setting.playtimer) try{ setting.onslide.call(slideshow, setting.$gallerylayers.eq(setting.fglayer).get(0), setting.curimage) }catch(e){ alert("Fade In Slideshow error: An error has occured somwhere in your code attached to the \"onslide\" event: "+e) } if (setting.descreveal=="peekaboo" && setting.longestdesc!=""){ slideshow.showhidedescpanel('show') setting.hidedesctimer=setTimeout(function(){slideshow.showhidedescpanel('hide')}, setting.displaymode.pause-fadeSlideShow_descpanel.slidespeed) } setting.currentstep+=1 if (setting.displaymode.type=="auto"){ if (setting.currentstep<=setting.totalsteps || setting.displaymode.cycles==0) setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.displaymode.pause) } }) //end callback function setting.$gallerylayers.eq(setting.fglayer).css({zIndex:999}) //foreground layer becomes background setting.fglayer=setting.bglayer setting.bglayer=(setting.bglayer==0)? 1 : 0 setting.curimage=imgindex if (setting.$descpanel){ setting.$descpanel.css({visibility:(setting.imagearray[imgindex][3])? 'visible' : 'hidden'}) if (setting.imagearray[imgindex][3]) //if this slide contains a description setting.$descinner.empty().html(setting.closebutton + setting.imagearray[imgindex][3]) } if (setting.displaymode.type=="manual" && !setting.displaymode.wraparound){ this.paginatecontrol() } if (setting.$status) //if status container defined setting.$status.html(setting.curimage+1 + "/" + totalimages) },

showhidedescpanel:function(state, animateduration){ var setting=this.setting var endpoint=(state=="show")? setting.dimensions[1]-setting.panelheight : this.setting.dimensions[1] setting.$descpanel.stop().animate({top:endpoint}, (typeof animateduration!="undefined"? animateduration : fadeSlideShow_descpanel.slidespeed), function(){ if (setting.descreveal=="always" && state=="hide") setting.$restorebutton.css({visibility:'visible'}) //show restore button }) },

paginateinit:function($){ var slideshow=this var setting=this.setting if (setting.togglerid){ //if toggler div defined setting.$togglerdiv=$("#"+setting.togglerid) setting.$prev=setting.$togglerdiv.find('.prev').data('action', 'prev') setting.$next=setting.$togglerdiv.find('.next').data('action', 'next') setting.$prev.add(setting.$next).click(function(e){ //assign click behavior to prev and next controls var $target=$(this) slideshow.navigate($target.data('action')) e.preventDefault() }) setting.$status=setting.$togglerdiv.find('.status') } },

paginatecontrol:function(){ var setting=this.setting setting.$prev.css({opacity:(setting.curimage==0)? 0.4 : 1}).data('action', (setting.curimage==0)? 'none' : 'prev') setting.$next.css({opacity:(setting.curimage==setting.imagearray.length-1)? 0.4 : 1}).data('action', (setting.curimage==setting.imagearray.length-1)? 'none' : 'next') if (document.documentMode==8){ //in IE8 standards mode, apply opacity to inner image of link setting.$prev.find('img:eq(0)').css({opacity:(setting.curimage==0)? 0.4 : 1}) setting.$next.find('img:eq(0)').css({opacity:(setting.curimage==setting.imagearray.length-1)? 0.4 : 1}) } }

}

fadeSlideShow.routines={

getSlideHTML:function(imgelement){ var layerHTML=(imgelement[1])? '<a href="'+imgelement[1]+'" target="'+imgelement[2]+'">\n' : //hyperlink slide? layerHTML+='<img src="'+imgelement[0]+'" style="border-width:0;" />\n' layerHTML+=(imgelement[1])? '</a>\n' : return layerHTML //return HTML for this layer },

getFullHTML:function(imagearray){ var preloadhtml= for (var i=0; i<imagearray.length; i++) preloadhtml+=this.getSlideHTML(imagearray[i]) return preloadhtml },

adddescpanel:function($, setting){

setting.$descpanel=$('')

.css({position:'absolute', visibility:'hidden', width:'100%', left:0, top:setting.dimensions[1], font:fadeSlideShow_descpanel.fontStyle, zIndex:'1001'}) .appendTo(setting.$wrapperdiv)

$('') //create inner nav panel DIVs

.css({position:'absolute', left:0, top:0, width:setting.$descpanel.width()-8, padding:'4px'}) .eq(0).css({background:'black', opacity:0.7}).end() //"descpanelbg" div .eq(1).css({color:'white'}).html(setting.closebutton + setting.longestdesc).end() //"descpanelfg" div .appendTo(setting.$descpanel) setting.$descinner=setting.$descpanel.find('div.descpanelfg') setting.panelheight=setting.$descinner.outerHeight() setting.$descpanel.css({height:setting.panelheight}).find('div').css({height:'100%'}) if (setting.descreveal=="always"){ //create restore button setting.$restorebutton=$('<img class="restore" title="Restore Description" src="' + fadeSlideShow_descpanel.controls[1][0] +'" style="position:absolute;visibility:hidden;right:0;bottom:0;z-index:1002;width:'+fadeSlideShow_descpanel.controls[1][1]+'px;height:'+fadeSlideShow_descpanel.controls[1][2]+'px;cursor:pointer;cursor:hand" />') .appendTo(setting.$wrapperdiv)

} },

getCookie:function(Name){ var re=new RegExp(Name+"=[^;]+", "i"); //construct RE to search for target name/value pair if (document.cookie.match(re)) //if cookie found return document.cookie.match(re)[0].split("=")[1] //return its value return null },

setCookie:function(name, value){ document.cookie = name+"=" + value + ";path=/" } }