Lightning Launcher

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====== About the script ======
  * Purpose : Show Battery Widget
  * Author : Abednego JS ( https://plus.google.com/u/0/118095355037125433304 )
  * Altered by: Jappie Toutenhoofd (https://plus.google.com/+JappieToutenhoofd)
  * Link: https://plus.google.com/u/0/118095355037125433304/posts/UXfaG9YQyqX

====== How to use the script ======

  * Create badge to use this script.
  * Make sure Expert mode is on in the LL settings (for expert events)
  * Set event resumed to run script 'BattW-resume'
  * Set event paused to run script 'BattW-pause'
  * Resize to a desired fit
  * Decrease upper and bottom margins to -8 to fit a small text on a very thin bar
====== Script code ======
======= BattW-resume =======
<code>
LL.bindClass("android.os.BatteryManager");
LL.bindClass("android.content.BroadcastReceiver");
LL.bindClass("android.content.Intent");
LL.bindClass("android.content.IntentFilter");

// Update every 10s, this is a cyclic update. Improvement: use a receiver instead
var PERIOD = 10000;

var item = LL.getEvent().getItem();

function refresh() {
 var ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
 var batteryStatus = LL.getContext().registerReceiver(null, ifilter);

 var status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
 var level  = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
 var scale  = batteryStatus.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
 var isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL;

 var chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
 var usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
 var acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;
 var batperc = Math.floor((100*level)/scale);
 var batstat = "";

if (isCharging)
 {
   if (usbCharge)
   { batstat = "usb charging . . .";
   }else
   { batstat = "AC charging . . .";
   }
 }else
 {   batstat = "discharged to " + batperc;
 }

 item.setLabel(batstat);

 var batW = item.getWidth(); 
 var batH = item.getHeight(); 

 var klrR = Math.floor( ( 100 - batperc) * 2.55);
 var klrG = Math.floor( ( 0   + batperc) * 2.55);

 var p   = new Paint(); 
     p.setAntiAlias(true); 
     p.setStyle(Paint.Style.FILL); 
     p.setColor(Color.rgb(klrR,klrG,0)); 

 var img = LL.createImage( batW,batH); 
 item.setBoxBackground(img, "ns"); 
 var c   = img.draw(); 
     c.drawRect(0, 0, (batW * (batperc/100)), batH, p); 
 img.save(); 
 img.update(); 

 item.setTag("battW", setTimeout(refresh, PERIOD));
}

refresh();
</code>

======= BattW-pause =======
<code>
// important: preserve the battery life and clear timeouts when the item is paused to avoid useless background activity
var id = LL.getEvent().getItem().getTag("battW");
if(id != null)
  { clearTimeout(parseInt(id));
}
</code>
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