/* 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 AlgemShow_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 AlgemShow(settingarg){
this.setting=settingarg
settingarg=null
var setting=this.setting
setting.fadeduration=setting.fadeduration? parseInt(setting.fadeduration) : 500
setting.curimage=(setting.persist)? AlgemShow.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=AlgemShow_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($){ //fire on DOM ready
var setting=slideshow.setting
var fullhtml=AlgemShow.routines.getFullHTML(setting.imagearray) //get full HTML of entire slideshow
setting.$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.$gallerylayers=$('<div class="gallerylayer"></div><div class="gallerylayer"></div>') //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="'+AlgemShow_descpanel.controls[2][0]+'" style="position:absolute;width:'+AlgemShow_descpanel.controls[2][1]+';height:'+AlgemShow_descpanel.controls[2][2]+'" />')
.css({left:setting.dimensions[0]/2-AlgemShow_descpanel.controls[2][1]/2, top:setting.dimensions[1]/2-AlgemShow_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
AlgemShow.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
AlgemShow.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
})
})
}
AlgemShow.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.$gallerylayers.eq(setting.fglayer).get(0), setting.curimage)
}catch(e){
alert("Fade In Slideshow error: An error has occured somwhere in your code attached to the \"onslide\" event: "+e)
}
if (setting.descreveal=="peekaboo" && setting.longestdesc!=""){
slideshow.showhidedescpanel('show')
setting.hidedesctimer=setTimeout(function(){slideshow.showhidedescpanel('hide')}, setting.displaymode.pause-AlgemShow_descpanel.slidespeed)
}
setting.currentstep+=1
if (setting.displaymode.type=="auto"){
if (setting.currentstep<=setting.totalsteps || setting.displaymode.cycles==0)
setting.playtimer=setTimeout(function(){slideshow.showslide('next')}, setting.displaymode.pause)
}
}) //end callback function
setting.$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 : AlgemShow_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.$next.find('img:eq(0)').css({opacity:(setting.curimage==setting.imagearray.length-1)? 0.4 : 1})
}
}
}
AlgemShow.routines={
getSlideHTML:function(imgelement){
var layerHTML=(imgelement[1])? '<a href="'+imgelement[1]+'" target="'+imgelement[2]+'">\n' : '' //hyperlink slide?
layerHTML+='<img src="'+imgelement[0]+'" style="border-width:0;" />\n'
layerHTML+=(imgelement[1])? '</a>\n' : ''
return layerHTML //return HTML for this layer
},
getFullHTML:function(imagearray){
var preloadhtml=''
for (var i=0; i<imagearray.length; i++)
preloadhtml+=this.getSlideHTML(imagearray[i])
return preloadhtml
},
adddescpanel:function($, setting){
setting.$descpanel=$('<div class="fadeslidedescdiv"></div>')
.css({position:'absolute', visibility:'hidden', width:'100%', left:0, top:setting.dimensions[1], font:AlgemShow_descpanel.fontStyle, zIndex:'1001'})
.appendTo(setting.$wrapperdiv)
$('<div class="descpanelbg"></div><div class="descpanelfg"></div>') //create inner nav panel DIVs
.css({position:'absolute', left:0, top:0, width:setting.$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=$('<img class="restore" title="Restore Description" src="' + AlgemShow_descpanel.controls[1][0] +'" style="position:absolute;visibility:hidden;right:0;bottom:0;z-index:1002;width:'+AlgemShow_descpanel.controls[1][1]+'px;height:'+AlgemShow_descpanel.controls[1][2]+'px;cursor:pointer;cursor:hand" />')
.appendTo(setting.$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=/"
}
}
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