Lightning Launcher

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====== About the script ======
  * Purpose : This script will give you a beautiful page transition animation and an optional horizontal page loop
  * Author : [[https://plus.google.com/+LukasMorawietz|LM13]]
  * Current Version : 1.0
  * Link: https://plus.google.com/115366157037831519359/posts/GqZBMeMEpLT

====== Changelog ======
  * Version 1.0 (13/7/2014): initial release in wiki



====== How to use the script ======
  * Set the script to the positionchanged event of your container
  * enable infinte scrolling if you want a page loop, disable it if you don't want to loop through pages
  * in this container: create a shortcut or a gesture to the script 
  * one click on the shortcut will enable the animation, clicking again will disable the animation. 
  * BE SURE TO DISABLE THE ANIMATION BEFORE YOU EDIT, MOVE OR ADD ITEMS!

//please report all bugs in the g+ community!//

====== Script ======
<code>var e=LL.getEvent(); 
var d=e.getContainer();
var dwidth=d.getWidth(); 
var dheight=d.getHeight();
var cont=JSON.parse(d.getTag()|| "null");
var items=d.getItems();

if(e.getSource()!="C_POSITION_CHANGED"){
var box=d.getBoundingBox();
if(cont==null) cont=new Object(); cont.minx=box.getLeft(); cont.maxx=box.getRight();
var minpage=Math.floor(cont.minx/dwidth);
if(cont.setup!=true) 
{ 
cont.pages=[];
var counters=[];
for(x=0;x<Math.ceil(cont.maxx/dwidth)-minpage;x++)
{
cont.pages[x]=[];
counters[x]=0;
} 
for(x=0;x<items.length;x++) 
{ 
var i=items.getAt(x); 
var pinned=i.getProperties() .getString("i.pinMode");
if(pinned=="NONE"|| pinned=="Y")
{
var data=new Object(); data.posx=i.getPositionX(); data.posy=i.getPositionY(); if(i.getProperties().getBoolean("i.onGrid")) data.onGrid=true; 
else data.onGrid=false; i.getProperties().edit().setBoolean("i.onGrid",false).commit();
var p=Math.floor(data.posx/dwidth)-minpage;
cont.pages[p][counters[p]++]=i.getId();
i.setTag(JSON.stringify(data)); 
}
} 
for(x=0;x<Math.ceil(cont.maxx/dwidth)-minpage;x++)
{
cont.pages[x].length=counters[x];
} 
cont.setup=true; Android.makeNewToast("Animation enabled",true).show();
} 
else
{ 
var cellw=d.getCellWidth(); 
var cellh=d.getCellHeight();
for(x=0;x<items.getLength();x++) 
{ 
var i=items.getAt(x); 
var data=JSON.parse(i.getTag());
if(data!=null)
{
i.setPosition(data.posx,data.posy);
if(data.onGrid==true) 
{ 
iwidth=i.getWidth(); iheight=i.getHeight(); i.getProperties().edit().setBoolean("i.onGrid",true).commit(); 
i.setCell(Math.round(data.posx/cellw),Math.round(data.posy/cellh),Math.round((data.posx+iwidth)/cellw),Math.round(( data.posy+iheight)/cellh)); 
} 
} 
} 
cont.setup=false; Android.makeNewToast("Animation disabled",true).show(); 
} 
d.setTag(JSON.stringify(cont));
}


if(cont==null || !cont.setup || d.getPositionScale()!=1)return;
var dposx=d.getPositionX();
var dposy=d.getPositionY();
var current=Math.floor(dposx/dwidth);
var pagepos=current*dwidth;
var percent=(dposx-pagepos)/dwidth;
var maxpage=Math.ceil((cont.maxx-dwidth)/dwidth);
var minpage=Math.floor(cont.minx/dwidth);
var zorder=items.length;

if((percent>0.005 && percent<99.995) && dposx>cont.minx-dwidth)
{
var scrollLimit=d.getProperties() .getBoolean("noScrollLimit");
if(dposx>cont.maxx-dwidth&&scrollLimit){
d.setPosition(cont.minx-dwidth,dposy,1,false);
}
if(dposx<cont.minx&&scrollLimit)
cont.state=true;
var items=cont.pages[(cont.state?maxpage:current)-minpage];
if(items!=null)
{
for(z=0;z<items.length;z++)
{
var item=LL.getItemById(items[z]);
var data=JSON.parse(item.getTag());
var x=(data.posx%dwidth+ dwidth)%dwidth;
item.setScale(1,1);
item.setPosition(pagepos+x,data.posy); item.getProperties().edit().setInteger("i.alpha",255).commit();
zorder=Math.min(zorder,d.getItemZIndex(items[z]));
}
}
var items=cont.pages[current+1-minpage];
if(items!=null)
{
for(z=0;z<items.length;z++)
{
var item=LL.getItemById(items[z]);
var data=JSON.parse(item.getTag());
var x=(data.posx%dwidth+ dwidth)%dwidth;
var y=((data.posy%dheight +dheight)%dheight)
if(d.getItemZIndex(items[z])>=zorder)d.setItemZIndex(items[z],0);
item.setScale(0.75+percent/4,0.75+percent/4);
item.setPosition(dposx+dwidth/2-(dwidth/2-x)*(0.75+percent/4),dposy+dheight/2-(dheight/2-y)*(0.75+percent/4));
item.getProperties().edit().setInteger("i.alpha",255*percent).commit();
}
}
}
else
{
d.setPosition(dposx,dposy);
d.setPosition(dposx<cont.minx?cont.maxx-dwidth:dposx,dposy,1,false);
cont.state=false;
for(i=0;i<items.length;i++)
{
item=items.getAt(i);
var data=JSON.parse(item.getTag());
if(data!=null)
{
item.setScale(1,1);
item.setPosition(data.posx,data.posy);
}
item.getProperties().edit().setInteger("i.alpha",255).commit();
}
}
</code>
Lightning Launcher

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