Lightning Launcher

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====== About the script ======
  * Purpose : This script will allow you to set up a vertical Scrollbar for a desktop
  * Author : [[https://plus.google.com/+LukasMorawietz|LM13]]
  * Current Version : 1.1
  * Link : https://plus.google.com/115366157037831519359/posts/AmyQ3J8PUyc
  * //Deprecated//

this is a change

====== Changelog ====== 
  * Version 1.0 (1/4/2014): initial release in wiki
  *  Version 1.1 (2/6/2014): added tap

====== How to use the script ======
  * create a panel where you want to scroll, pin it and give it a label
  * enable infinite scrolling in the panel
  * put in the panel on (0,0) an item, give it a nice icon and disable it (set to not clickable)
  * set the script to both desktops and panels positionchanged event and to  panels tap-on-empty-space event
  * set up your configuration at the beginning of the script

====== Issues and hints ======
  * on startup the position in the scrollbar may be incorrect

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

====== Script code ======
<sxh javascript;>//config
var Desktop_Name="Scrollbar";
var Panel_Name="Scroll";
var Indicator_Name="Indicator";
var scroll_to_pages=false;
//endconfig

var e=LL.getEvent();
var d=LL.getDesktopByName(Desktop_Name);
var c=d.getItemByLabel(Panel_Name).getContainer();
var item =c.getItemByLabel(Indicator_Name); 
if(e.getSource()=="C_CLICK")c.setPosition(0,-e.getTouchScreenY()+item.getHeight()/2,1,false);
var cheight=c.getHeight();
var cpos=c.getPositionY();
var iheight=item.getHeight();
var dpos=d.getPositionY();
var dheight=d.getHeight();
if(cpos>0) c.setPosition(0,0,1,false);
if(cpos<iheight-cheight) c.setPosition(0,iheight-cheight,1,false);
var bounds=d.getBoundingBox();
var min=bounds.getTop()/dheight;
var max=bounds.getBottom()/dheight-1;
var pmax=cheight-iheight;
var dcount=max-min;
if(e.getContainer()==c)
{
var goto=min-(cpos/pmax*dcount);
if(scroll_to_pages)goto=Math.round(goto);
if(goto<min)goto=min;
if(goto>max)goto=max;
d.setPosition(0,goto*dheight,1,false);
}
else
{
var current=dpos/dheight;
c.setPosition(0,-pmax*((current-min)/dcount),1,false);
}
</sxh>
Lightning Launcher

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