Added Compass power status widget

apps.json

@@ -2880,5 +2880,17 @@
     {"name":"helloworld.app.js","url":"app.js"},
     {"name":"helloworld.img","url":"app-icon.js","evaluate":true}
   ]
+},
+{ "id": "widcom",
+  "name": "Compass Widget",
+  "icon": "widget.png",
+  "version":"0.01",
+  "description": "Tiny widget to show the power on/off status of the Compass. Requires firmware v2.08.167 or later",
+  "tags": "widget, compass",
+  "type":"widget",
+  "readme": "README.md",
+  "storage": [
+    {"name":"widcom.wid.js","url":"widget.js"}
+  ]
 }
 ]

apps/widcom/README.md

@@ -0,0 +1,11 @@
+# Compass Power Status Widget
+
+A simple widget that shows the on/off status of the compass.
+
+The compass draws around 1mA when on.  Whilst this is not a big draw
+on the battery it is still easy to have it switched on and not be
+aware.
+
+- Uses Bangle.isCompassOn(), requires firmware v2.08.167 or later
+- Shows in grey when the compass is off
+- Shows in amber when the compass is on

apps/widcom/widget.js

@@ -0,0 +1,30 @@
+(function(){
+  //var img = E.toArrayBuffer(atob("FBSBAAAAAAAAA/wAf+AP/wH/2D/zw/w8PwfD9nw+b8Pg/Dw/w8/8G/+A//AH/gA/wAAAAAAA"));
+  //var img = E.toArrayBuffer(atob("GBiBAAB+AAP/wAeB4A4AcBgAGDAADHAADmABhmAHhsAfA8A/A8BmA8BmA8D8A8D4A2HgBmGABnAADjAADBgAGA4AcAeB4AP/wAB+AA=="));
+  var img = E.toArrayBuffer(atob("FBSBAAH4AH/gHAODgBwwAMYABkAMLAPDwPg8CYPBkDwfA8PANDACYABjAAw4AcHAOAf+AB+A"));        
+  
+  function draw() {
+    g.reset();
+    if (Bangle.isCompassOn()) {
+      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.var);
+  }
+
+  var timerInterval;
+  Bangle.on('lcdPower', function(on) {
+    if (on) {
+      WIDGETS.compass.draw();
+      if (!timerInterval) timerInterval = setInterval(()=>WIDGETS.compass.draw(), 2000);
+    } else {
+      if (timerInterval) {
+        clearInterval(timerInterval);
+        timerInterval = undefined;
+      }
+    }
+  });
+
+  WIDGETS.compass={area:"tr",width:24,draw:draw};
+})();