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View Full Version : Presentational slideshow help, please



bsacco
01-28-2011, 11:27 PM
1) Script Title: Presentational Slideshow

2) Script URL (on DD): http://www.dynamicdrive.com/dynamicindex14/presentationslide.htm

3) Describe problem: I would like to know if there is any way to center smaller photos inside the space provided when I plugged in the size of the largest photo. All the smaller photos seem to align to the left in the space, and I would like to center them.

While I know that the Flexi slide show might have been better for me, I like this one better, and hope there is some way to do this.

vwphillips
01-29-2011, 01:02 PM
that script is old and difficult to modify


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>
<title></title>
<style type="text/css">
/*<![CDATA[*/

#tst {
position:absolute;left:300px;top:100px;width:300px;height:300px;border:solid black 1px;background-Color:#FFFFCC;
}

#tst IMG{
border-Width:0px;
}

/*]]>*/
</style>

<script type="text/javascript">
// Animate (11-January-2010)
// by Vic Phillips http://www.vicsjavascripts.org.uk

// To progressively change the Left, Top, Width, Height or Opacity of an element over a specified period of time.
// With the ability to scale the effect time on specified minimum/maximum values
// and with three types of progression 'sin' and 'cos' and liner.

// **** Application Notes

// **** The HTML Code
//
// when moving an element the inline or class rule style position of the element should be assigned as
// 'position:relative;' or 'position:absolute;'
//
// The element would normally be assigned a unique ID name.
//

// **** Initialising the Script.
//
// The script is initialised by assigning an instance of the script to a variable.
// e.g A = new zxcAnimate('left','id1')
// where:
// A = a global variable (variable)
// parameter 0 = the mode(see Note 1). (string)
// parameter 1 = the unique ID name or element object. (string or element object)
// parameter 1 = the initial value. (digits, default = 0)

// **** Executing the Effect
//
// The effect is executed by an event call to function 'A.animate(10,800 ,5000,[10,800]);'
// where:
// A = the global referencing the script instance. (variable)
// parameter 0 = the start value. (digits, for opacity minimum 0, maximum 100)
// parameter 1 = the finish value. (digits, for opacity minimum 0, maximum 100)
// parameter 2 = period of time between the start and finish of the effect in milliseconds. (digits or defaults to previous or 0(on first call) milliSeconds)
// parameter 3 = (optional) to scale the effect time on a specified minimum/maximum. (array, see Note 3)
// field 0 the minimum value. (digits)
// field 1 the maximum value. (digits)
// parameter 3 = (optional) the type of progression, 'sin', 'cos' or 'liner'. (string, default = 'liner')
// 'sin' progression starts fast and ends slow.
// 'cos' progression starts slow and ends fast.
//
// Note 1: Examples modes: 'left', 'top', 'width', 'height', 'opacity.
// Note 2: The default units(excepting opacity) are 'px'.
// For hyphenated modes, the first character after the hyphen must be upper case, all others lower case.
// Note 3: The scale is of particular use when re-calling the effect
// in mid progression to retain an constant rate of progression.
// Note 4: The current effect value is recorded in A.data[0].
// Note 5: A function may be called on completion of the effect by assigning the function
// to the animator intance property .Complete.
// e.g. [instance].Complete=function(){ alert(this.data[0]); };
//



// **** Functional Code(1.52K) - NO NEED to Change

function zxcAnimate(mde,obj,srt){
this.to=null;
this.obj=typeof(obj)=='object'?obj:document.getElementById(obj);
this.mde=mde.replace(/\W/g,'');
this.data=[srt||0];
return this;
}

zxcAnimate.prototype={

animate:function(srt,fin,ms,scale,c){
clearTimeout(this.to);
this.time=ms||this.time||0;
this.neg=srt<0||fin<0;
this.data=[srt,srt,fin];
this.mS=this.time*(!scale?1:Math.abs((fin-srt)/(scale[1]-scale[0])));
this.c=typeof(c)=='string'?c.charAt(0).toLowerCase():this.c?this.c:'';
this.inc=Math.PI/(2*this.mS);
this.srttime=new Date().getTime();
this.cng();
},

cng:function(){
var oop=this,ms=new Date().getTime()-this.srttime;
this.data[0]=Math.floor(this.c=='s'?(this.data[2]-this.data[1])*Math.sin(this.inc*ms)+this.data[1]:this.c=='c'?this.data[2]-(this.data[2]-this.data[1])*Math.cos(this.inc*ms):(this.data[2]-this.data[1])/this.mS*ms+this.data[1]);
this.apply();
if (ms<this.mS) this.to=setTimeout(function(){oop.cng()},10);
else {
this.data[0]=this.data[2];
this.apply();
if (this.Complete) this.Complete(this);
}
},

apply:function(){
if (isFinite(this.data[0])){
if (this.data[0]<0&&!this.neg) this.data[0]=0;
if (this.mde!='opacity') this.obj.style[this.mde]=this.data[0]+'px';
else zxcOpacity(this.obj,this.data[0]);
}
}

}

function zxcOpacity(obj,opc){
if (opc<0||opc>100) return;
obj.style.filter='alpha(opacity='+opc+')';
obj.style.opacity=obj.style.MozOpacity=obj.style.WebkitOpacity=obj.style.KhtmlOpacity=opc/100-.001;
}


</script>



</head>

<body>
<div id="tst" onmouseover="S.Pause();" onmouseout="S.Auto();" ></div>

<script type="text/javascript">
/*<![CDATA[*/

function Slider(o){
var obj=document.getElementById(o.ID),ary=o.ImageArray,z0=0,a,img,w=obj.offsetWidth,h=obj.offsetHeight;
for (var z0=0;z0<ary.length;z0++){
ary[z0][2]=new Image();
ary[z0][2].src=ary[z0][0];
}
this.o=o;
this.to=null;
this.ary=ary;
this.preload(new Date(),(typeof(o.PreLoadDuration)=='number'?o.PreLoadDuration:5000));
}

Slider.prototype={

Auto:function(){
this.Pause();
var oop=this;
this.to=setTimeout(function(){ oop.auto(); },500);
},

Pause:function(){
clearTimeout(this.to);
},

init:function(){
var oop=this,o=this.o,obj=document.getElementById(o.ID),ary=this.ary,z0=0,a,img,w=obj.offsetWidth,h=obj.offsetHeight,lft;
obj.style.overflow='hidden';
this.oops=[];
for (var z0=0;z0<ary.length;z0++){
if (ary[z0][2].width>40&&ary[z0][2].complete){
a=document.createElement('A');
if (ary[z0][1]){
a.href=ary[z0][1];
}
img=document.createElement('IMG');
img.src=ary[z0][0];
img.style.position='absolute';
lft=(w-ary[z0][2].width)/2-w;
img.style.left=lft+'px';
img.style.top=(h-ary[z0][2].height)/2+'px';
a.appendChild(img);
obj.appendChild(a);
this.oops.push([new zxcAnimate('left',img,lft),lft]);
this.oops[this.oops.length-1][0].Complete=function(){
if (this.obj!=oop.hide){
oop.hide.style.left=-w+'px';
}
}
}
}
this.lst=this.oops[0][0].obj;
this.width=w;
this.cnt=0;
this.ms=10;
this.rotate();
this.ms=typeof(o.AnimationSpeed)=='number'?o.AnimationSpeed:1000;
this.hold=(typeof(o.HoldDuration)=='number'?o.HoldDuration:2000)+this.ms;
if (typeof(o.AutoStart)!='boolean'||o.AutoStart){
this.Auto();
}
},

rotate:function(){
this.Pause();
this.lst.style.zIndex='0';
this.hide=this.lst;
var oop=this.oops[this.cnt];
oop[0].animate(oop[1],oop[1]+this.width,this.ms);
this.lst=oop[0].obj;
this.lst.style.zIndex='1';
this.cnt=++this.cnt%this.oops.length;
},

auto:function(){
var oop=this;
this.rotate();
this.to=setTimeout(function(){ oop.auto(); },this.hold);
},

preload:function(date,ms){
for (var oop=this,run=false,z0=0;z0<this.ary.length;z0++){
if (this.ary[z0][2].width<40||!this.ary[z0][2].complete){
run=true;
}
}
if (run&&new Date()-date<ms){
this.to=setTimeout(function(){ oop.preload(date,ms); },200);
}
else {
this.init();
}
}

}

S=new Slider({
ID:'tst', // the unique ID name of the parent node. (string)
ImageArray:[ // an arry defining the images srcs and link hrefs. (array)
// field 0 = the image src. (string)
// field 1 = (optional) the image link href. (string, default = no link)
// Note: the image width must be greater than 40px.
['http://www.vicsjavascripts.org.uk/StdImages/Zero.gif','#'],
['http://www.vicsjavascripts.org.uk/StdImages/One.gif'],
['http://www.vicsjavascripts.org.uk/StdImages/Two.gif'],
['http://www.vicsjavascripts.org.uk/StdImages/Three.gif']
],
AnimationSpeed:1000, //(optional) the animation duration in milli seconds. (number, default = 1000)
HoldDuration:1500, //(optional) the 'hold' duration in milli seconds. (number, default = 2000)
PreLoadDuration:1500, //(optional) time allowed to load the images in milli seconds. (number, default = 5000)
AutoStart:true //(optional) true = start auto rotation on initialization. (boolean, default = true)
});
/*]]>*/
</script>
</body>

</html>