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  1. #1
    New Coder
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    Oct 2010
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    JS Slideshow. Adding thumbnail support?

    Hey guys. I am using a javascript slideshow called fadeshow. (Main code below).

    I am wondering if there is a way to have thumbnail support, so I could allow the users to click on a thumbnail and have fadeshow go to that photo in the array. I have gotten a next / previous button working but also would like to add thumbnails.

    How would I write an a href link to specify an image in the array? Can this be done?

    Code:
    <script type="text/javascript">
    var mygallery2=new fadeSlideShow({
      wrapperid: "fadeshow2", //ID of blank DIV on page to house Slideshow
      dimensions: [1000, 665], //width/height of gallery in pixels. Should reflect dimensions of largest image
      imagearray: [
      ["images/1m.jpg"],
      ["images/2m.jpg"],
      ["images/3m.jpg"]
      ],
      displaymode: {type:'manual', pause:2500, cycles:0, wraparound:true},
      persist: false, //remember last viewed slide and recall within same session?
      fadeduration: 500, //transition duration (milliseconds)
      descreveal: "always",
      togglerid: "fadeshow2toggler"
    })
    </script>
    
    <div id="fadeshow2toggler">
    
    <a href="#" class="next"><div id="fadeshow2"></div></a><!--allows clicking the photo for next-->
    
    <a href="#" class="prev">Previous</a>  <a href="#" class="next">Next Image</a> (&nbsp;<span class="status"></span>&nbsp;)</span>
    
    </div><!--end fadeshow2toggler-->
    
    <!--thumbnails i would like to work-->
    <a href=#><img src="images/thumbnail1.jpg"></a>
    <a href=#><img src="images/thumbnail2.jpg"></a>
    <a href=#><img src="images/thumbnail3.jpg"></a>
    Any advice appreciated!

  • #2
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    I thought I would add the JS file as well. I have been looking through it and found a comment in the file (in red).. maybe this function is available somehow but I am not javascript expert!

    Code:
    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.$gallerylayers=$('<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="'+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=$('<div class="fadeslidedescdiv"></div>')
    			.css({position:'absolute', visibility:'hidden', width:'100%', left:0, top:setting.dimensions[1], font:fadeSlideShow_descpanel.fontStyle, zIndex:'1001'})
    			.appendTo(setting.$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=$('<img class="restore" title="Restore Description" src="' + fadeSlideShow_descpanel.controls[1][0] +'" style="position:absolute;visibility:hidden;right:0;bottom:0;z-index:1002;width:'+fadeSlideShow_descpanel.controls[1][1]+'px;height:'+fadeSlideShow_descpanel.controls[1][2]+'px;cursor:pointer;cursor:hand" />')
    				.appendTo(setting.$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=/"
    	}
    }

  • #3
    New Coder
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    Oct 2010
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    Nobody? Surely its possible to do no? Some sort of onlick event?? anything.


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