gpsrec: Ensure we don't turn GPS off if it was previously on (eg from another app/widget)

apps.json

@@ -344,7 +344,7 @@
   { "id": "gpsrec",
     "name": "GPS Recorder",
     "icon": "app.png",
-    "version":"0.10",
+    "version":"0.11",
     "interface": "interface.html",
     "description": "Application that allows you to record a GPS track. Can run in background",
     "tags": "tool,outdoors,gps,widget",

apps/gpsrec/ChangeLog

@@ -10,4 +10,5 @@
 0.09: Change default GPS period to 10 (1 is overkill for most uses and makes things slow)
       Added RAM keyword to functions & other tweaks to speed up rendering
       Going 'back' from track view now doesn't load again
-0.10: Can now graph altitude & speed 
+0.10: Can now graph altitude & speed
+0.11: Ensure we don't turn GPS off if it was previously on (eg from another app/widget)

apps/gpsrec/widget.js

@@ -4,6 +4,7 @@
   var fixToggle = false; // toggles once for each reading
   var gpsTrack; // file for GPS track
   var periodCtr = 0;
+  var gpsOn = false;
 
   // draw your widget
   function draw() {
@@ -45,17 +46,21 @@
     settings.file |= 0;
 
     Bangle.removeListener('GPS',onGPS);
+    var gOn = false;
     if (settings.recording) {
       WIDGETS["gpsrec"].width = 24;
-      Bangle.on('GPS',onGPS);
-      Bangle.setGPSPower(1);
+      Bangle.on('GPS', onGPS);
       var n = settings.file.toString(36);
       gpsTrack = require("Storage").open(".gpsrc"+n,"a");
+      gOn = true;
     } else {
       WIDGETS["gpsrec"].width = 0;
-      Bangle.setGPSPower(0);
       gpsTrack = undefined;
     }
+    if (gOn != gpsOn) {
+      Bangle.setGPSPower(gOn);
+      gpsOn = gOn;
+    }
   }
   // add the widget
   WIDGETS["gpsrec"]={area:"tl",width:24,draw:draw,reload:function() {