hrm 0.14: Ensure we reset graphics so other apps can't mess up the background color

Author: gfwilliams

apps/hrm/ChangeLog

@@ -11,3 +11,4 @@
 0.11: Automatic translation of strings.
 0.12: Minor code improvements
 0.13: Minor code improvements
+0.14: Ensure we reset graphics so other apps can't mess up the background color

apps/hrm/heartrate.js

@@ -14,7 +14,7 @@ function onHRM(h) {
     // the first time we're called remove
     // the countdown
     counter = undefined;
-    g.clearRect(0,24,g.getWidth(),g.getHeight());
+    g.reset().clearRect(0,24,g.getWidth(),g.getHeight());
   }
   hrmInfo = h;
   /* On 2v09 and earlier firmwares the only solution for realtime
@@ -35,7 +35,7 @@ Bangle.on('HRM', onHRM);
 
 function updateHrm(){
   var px = g.getWidth()/2;
-  g.setFontAlign(0,-1);
+  g.reset().setFontAlign(0,-1);
   g.clearRect(0,24,g.getWidth(),80);
   g.setFont("6x8").drawString(/*LANG*/"Confidence "+(hrmInfo.confidence || "--")+"%", px, 70);
 
@@ -62,6 +62,7 @@ var scale = 2000;
 HRM events as they happen */
 Bangle.on('HRM-raw', function(v) {
   hrmOffset++;
+  g.reset();
   if (hrmOffset>g.getWidth()) {
     let thousands = Math.round(rawMax / 1000) * 1000;
     if (thousands > scale) scale = thousands;
@@ -91,11 +92,11 @@ Bangle.on('HRM-raw', function(v) {
 var counter = 5;
 function countDown() {
   if (counter) {
-    g.drawString(counter--,g.getWidth()/2,g.getHeight()/2, true);
+    g.reset().drawString(counter--,g.getWidth()/2,g.getHeight()/2, true);
     setTimeout(countDown, 1000);
   }
 }
-g.clear();
+g.clear(1);
 Bangle.loadWidgets();
 Bangle.drawWidgets();
 g.setColor(g.theme.fg);
@@ -111,7 +112,7 @@ var hrmInfo;
 
 function readHRM() {
   if (!hrmInfo) return;
-
+  g.reset();
   if (hrmOffset==0) {
     g.clearRect(0,100,g.getWidth(),g.getHeight());
     lastHrmPt = [-100,0];

apps/hrm/metadata.json

@@ -1,8 +1,8 @@
 {
   "id": "hrm",
   "name": "Heart Rate Monitor",
-  "version": "0.13",
-  "author": "ra100",
+  "version": "0.14",
+  "author": "gfwilliams",
   "description": "Measure your heart rate and see live sensor data",
   "icon": "heartrate.png",
   "screenshots" : [ { "url":"screenshot.png" } ],