score: allow user to choose if screen of b1 should stay on

apps/score/score.app.js

@@ -30,6 +30,18 @@ function getSecondsTime() {
   return Math.floor(getTime() * 1000);
 }
 
+function setupDisplay() {
+  // make sure LCD on Bangle.js 1 stays on
+  if (isBangle1) {
+    if (settings.keepDisplayOn) {
+      Bangle.setLCDTimeout(0);
+      Bangle.setLCDPower(true);
+    } else {
+      Bangle.setLCDTimeout(10);
+    }
+  }
+}
+
 function setupInputWatchers(init) {
   Bangle.setUI('updown', v => {
     if (v) {
@@ -100,6 +112,7 @@ function showSettingsMenu() {
 
     draw();
 
+    setupDisplay();
     setupInputWatchers();
   }, function (msg) {
     switch (msg) {
@@ -459,12 +472,7 @@ function draw() {
   g.flip();
 }
 
-// make sure LCD on Bangle.js 1 stays on
-if (isBangle1) {
-  Bangle.setLCDTimeout(0);
-  Bangle.setLCDPower(true);
-}
-
+setupDisplay();
 setupInputWatchers(true);
 setupMatch();
 draw();

apps/score/score.settings.js

@@ -7,6 +7,9 @@
         if (settings.mirrorScoreButtons == null) {
           settings.mirrorScoreButtons = false;
         }
+        if (settings.keepDisplayOn == null) {
+          settings.keepDisplayOn = true;
+        }
       }
       if (settings.winSets == null) {
         settings.winSets = 2;
@@ -91,10 +94,12 @@
           return function() {
             changed = true;
             let mirrorScoreButtons = settings.mirrorScoreButtons;
+            let keepDisplayOn = settings.keepDisplayOn;
 
             settings = fillSettingsWithDefaults(presets[presetNames[i]]);
 
             settings.mirrorScoreButtons = mirrorScoreButtons;
+            settings.keepDisplayOn = keepDisplayOn;
             save(settings);
             ret(true);
           };
@@ -119,6 +124,11 @@
           format: m => offon[~~m],
           onchange: m => setAndSave('mirrorScoreButtons', m, true),
         };
+        m['Keep display on'] = {
+          value: settings.keepDisplayOn,
+          format: m => offon[~~m],
+          onchange: m => setAndSave('keepDisplayOn', m, true),
+        }
       }
       m['Sets to win'] = {
         value: settings.winSets,