Lightning Launcher

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====== About the script ======
  * Purpose : This script will give you a beautiful page transition animation and an optional horizontal & vertical page loop
  * Author : [[https://plus.google.com/+LukasMorawietz|LM13]]
  * Current Version : 3.1
  * Link: https://plus.google.com/115366157037831519359/posts/EAUStJNGa5o
  * Video : https://plus.google.com/115366157037831519359/posts/9eUTw8cCCpi
  * Download avialable! (Check repository)

====== Changelog ====== 
  * Version 1.0 (30/4/2014): initial release in wiki
  * Version 2.0 (18/5/2014): Reworked parsing structure, added vertical support, improved smoothness
  * Version 2.1 (20/6/2014): added rotation check
  * Version 3.1 (21/7/2014): standalone, reworked structure

====== 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 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!

====== Issues and hints ====== 
  * this will break any other script, which uses item or container tags, and will be broken by them
  * you can improve smoothness if you create on each page a panel and put all items in it. 
  * don't use dual position, this will do weird stuff
  * make sure all of your items have exactly one of the following rotations: 0°,90°,180°,270°

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

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

if(e.getSource()!="C_POSITION_CHANGED")
{
	if(cont==null) cont=new Object();
	var box=d.getBoundingBox();
	cont.minx=box.getLeft();
	cont.maxx=box.getRight();
	cont.miny=box.getTop();
	cont.maxy=box.getBottom();
	var minpagex=Math.floor( cont.minx/dwidth); 
	var minpagey=Math.floor( cont.miny/dheight);
	if(cont.setup!=true) 
	{ 
		cont.pages=[];
		for(x=0;x<Math.ceil(cont.maxx/dwidth)-minpagex;x++)
		{
			cont.pages[x]=[];
			for(y=0;y<Math.ceil(cont.maxy/dheight)-minpagey;y++)
			{
				cont.pages[x][y]=[];
			}
		}
		for(x=0;x<items.length;x++) 
		{ 
			var i=items.getAt(x);
			var pinned=i.getProperties() .getString("i.pinMode");
			if(pinned!="XY")
			{
				var data=new Object();
				data.posx=i.getPositionX();
				data.posy=i.getPositionY();
				data.rot=Math.abs(i.getRotation())==90;
				data.sx=data.rot?i.getScaleX():i.getScaleY();
				data.sy=data.rot?i.getScaleY():i.getScaleX();
				data.pin=pinned;
				if(i.getProperties().getBoolean("i.onGrid")) data.onGrid=true; 
				else data.onGrid=false;
				i.getProperties().edit().setBoolean("i.onGrid",false).commit();
				if(pinned=="X")
				{
					var ypages=cont.pages[Math.floor(data.posx/dwidth)-minpagex][Math.floor(data.posy/dheight)-minpagey];
					for(z=0;cont.pages[z]!=null;z++)
					cont.pages[z][Math.floor(data.posy/dheight)-minpagey].push(i.getId());
				}
				else if(pinned=="Y")
				{
					var xpages=cont.pages[Math.floor(data.posx/dwidth)-minpagex];
					for(z=0;z<xpages.length;z++)
					xpages[z].push(i.getId());
				}
				else cont.pages[Math.floor(data.posx/dwidth)-minpagex][Math.floor(data.posy/dheight)-minpagey].push(i.getId());
				i.setTag(JSON.stringify(data));
			}
		} 
		cont.setup=true;
		Android.makeNewToast("Animation enabled",true).show();
		LL.writeToLogFile(JSON.stringify(cont.pages),false);
	} 
	else
	{ 
		var cellw=d.getCellWidth(); 
		var cellh=d.getCellHeight();
		for(x=0;x<items.length;x++) 
		{ 
			var i=items.getAt(x); 
			var data=JSON.parse(i.getTag());
			i.setScale(1,1);
			if(data!=null&& 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 currentx=Math.floor(dposx/dwidth);
var pageposx=currentx*dwidth;
var percentx=(dposx-pageposx)/dwidth;
var currenty=Math.floor(dposy/dheight);
var pageposy=currenty*dheight;
var percenty=(dposy-pageposy)/dheight;
var maxpagex=Math.floor( (cont.maxx-dwidth)/dwidth);
var maxpagey=Math.floor( (cont.maxy-dheight)/dheight);
var minpagex=Math.floor( cont.minx/dwidth); 
var minpagey=Math.floor( cont.miny/dheight);

if(((percentx>0.005 && percentx<99.995) ||(percenty>0.005 && percenty<99.995)) && dposx>cont.minx-dwidth && dposy>cont.miny-dheight)
{
		var scrollLimit=d.getProperties() .getBoolean("noScrollLimit");
	if(dposx>cont.maxx-dwidth&&scrollLimit){
		d.setPosition(cont.minx-dwidth,dposy,1,false);
	}
	else if(dposy>cont.maxy-dheight&&scrollLimit) d.setPosition(dposx,cont.miny-dheight,1,false);
	if(dposx<cont.minx&&scrollLimit)
	cont.statex=true;
	if(dposy<cont.miny&&scrollLimit)
	cont.statey=true;
	
	var items0=(cont.pages[(cont.statex?maxpagex:currentx)-minpagex]||[])[(cont.statey?maxpagey:currenty)-minpagey];
	if(items0!=null)
	{
		for(z=0;z<items0.length;z++)
		{
			var item=LL.getItemById(items0[z]);
			var data=JSON.parse(item.getTag());
			item.setScale(((data.pin=="X"||percentx>=0.5||percenty>=0.5)?1:data.rot?1-percenty*2:1-percentx*2)*data.sx, ((data.pin=="Y"||percentx>=0.5||percenty>=0.5)?1:1-(data.rot?percentx:percenty)*2)*data.sy);
			item.setPosition(data.pin=="X"?data.posx:dposx+((data.posx%dwidth+dwidth)%dwidth)+percentx*(dwidth- ((data.posx%dwidth+dwidth)%dwidth)*2),data.pin=="Y"?data.posy:dposy+((data.posy%dheight+dheight)%dheight)+percenty*(dheight- ((data.posy%dheight+dheight)%dheight)*2));
			item.setVisibility((percentx<0.5||data.pin=="X")&&(percenty<0.5||data.pin=="Y"));
		}
	}
	var items=(cont.pages[currentx+1-minpagex]||[])[(cont.statey?maxpagey:currenty)-minpagey];
	if(items!=null)
	{
		for(z=0;z<items.length;z++)
		{
			if(items0==null||items0.indexOf(items[z])==-1)
			{
				var item=LL.getItemById(items[z]);
				var data=JSON.parse(item.getTag());
				item.setScale((data.pin=="X"||percentx<0.5||percenty>=0.5?1:data.rot?1-percenty*2:percentx>0.005?percentx*2-1:1)*data.sx,(data.pin=="Y"||percentx<0.5||percenty>=0.5?1:data.rot?(percentx>0.005?percentx*2-1:1):1-percenty*2)*data.sy);
				item.setPosition(data.pin=="X"?data.posx:dposx+dwidth/2*(2-percentx*2)+ ((data.posx%dwidth+dwidth)%dwidth)*(percentx*2-1),data.pin=="Y"?data.posy:dposy+((data.posy%dheight+dheight)%dheight)+percenty*(dheight- ((data.posy%dheight+dheight)%dheight)*2));
				item.setVisibility((percentx>=0.5||data.pin=="X")&&(percenty<0.5||data.pin=="Y"));
			}
		}
	}
	var items=(cont.pages[(cont.statex?maxpagex:currentx)-minpagex]||[])[currenty+1-minpagey];
	if(items!=null)
	{
		for(z=0;z<items.length;z++)
		{
			if(items0==null||items0.indexOf(items[z])==-1)
			{
				var item=LL.getItemById(items[z]);
				var data=JSON.parse(item.getTag());
				item.setScale((data.pin=="X"||percentx>=0.5||percenty<0.5?1:data.rot?(percenty>0.005?percenty*2-1:1):1-percentx*2)*data.sx,(data.pin=="Y"|| percentx>=0.5||percenty<0.5?1:data.rot?1-percentx*2:percenty>0.005?percenty*2-1:1)*data.sy);
				item.setPosition(data.pin=="X"?data.posx:dposx+((data.posx%dwidth+dwidth)%dwidth)+percentx*(dwidth- ((data.posx%dwidth+dwidth)%dwidth)*2),data.pin=="Y"?data.posy:dposy+dheight/2*(2-percenty*2)+ ((data.posy%dheight+dheight)%dheight)*(percenty*2-1));
				item.setVisibility((percentx<0.5||data.pin=="X")&&(percenty>=0.5||data.pin=="Y"));
			}
		}
	}
}
else
{
	d.setPosition(dposx,dposy);
	d.setPosition(dposx<cont.minx?cont.maxx-dwidth:dposx,dposy<cont.miny?cont.maxy-dheight:dposy,1,false);
	cont.statex=false;
	cont.statey=false;
	for(i=0;i<items.length;i++)
	{
		item=items.getAt(i);
		var data=JSON.parse(item.getTag());
		item.setScale(data.sx,data.sy);
		item.setPosition(data.posx,data.posy);
		item.setVisibility(true);
	}
}
</sxh>
Lightning Launcher

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