GPS Power Status widget

I have developed a little widget that works like the bluetooth widget to show the power status of the GPS.

This uses Bangle.isGPSOn() which is in the leading edge formware v2.08.167
I wont check in until that firmware is generally available.

One thing I have found is that when I switch to a multiclock face that switches the GPS On; the widget does not repond and display the status until the LCD has powered off, or I change to a different clock face. To get round this I am poking the widget using.

        // poke the gps widget indicator to change
        if (WIDGETS.gps !== undefined) {
          WIDGETS.gps.draw();
        }

Code of widget below:

(function(){
  var img = E.toArrayBuffer(atob("GBiBAAAAAAAAAAAAAA//8B//+BgYGBgYGBgYGBgYGBgYGBgYGB//+B//+BgYGBgYGBgYGBgYGBgYGBgYGB//+A//8AAAAAAAAAAAAA=="));
  
  function draw() {
    g.reset();
    if (Bangle.isGPSOn()) {
      g.setColor(1,0.8,0);     // on = amber
    } else {
      g.setColor(0.3,0.3,0.3); // off = grey
    }
    g.drawImage(img, 10+this.x, 2+this.y);
  }

  var timerInterval;
  Bangle.on('lcdPower', function(on) {
    if (on) {
      WIDGETS.gps.draw();
      if (!timerInterval) timerInterval = setInterval(()=>WIDGETS["gps"].draw(), 2000);
    } else {
      if (timerInterval) {
        clearInterval(timerInterval);
        timerInterval = undefined;
      }
    }
  });

  WIDGETS.gps={area:"tr",width:24,draw:draw};
})();

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