Add 'hide if charge greater than'

Move 'DEFAULTS' to try and reduce memory usage a little

apps.json

@@ -354,7 +354,7 @@
     "name": "Battery Level Widget (with percentage)",
     "shortName": "Battery Widget",
     "icon": "widget.png",
-    "version":"0.09",
+    "version":"0.10",
     "description": "Show the current battery level and charging status in the top right of the clock, with charge percentage",
     "tags": "widget,battery",
     "type":"widget",

apps/widbatpc/ChangeLog

@@ -6,3 +6,4 @@
 0.07: Add settings: percentage/color/charger icon
 0.08: Draw percentage as inverted on monochrome battery
 0.09: Fix regression stopping correct widget updates
+0.10: Add 'hide if charge greater than'

apps/widbatpc/settings.js

@@ -11,22 +11,22 @@
     'color': COLORS[0],
     'percentage': true,
     'charger': true,
-    'hideifmorethan20pct': false,
+    'hideifmorethan': 100,
   }
   // ...and overwrite them with any saved values
   // This way saved values are preserved if a new version adds more settings
   const storage = require('Storage')
   const saved = storage.readJSON(SETTINGS_FILE, 1) || {}
   for (const key in saved) {
-    s[key] = saved[key]
+    s[key] = saved[key];
   }
 
   // creates a function to safe a specific setting, e.g.  save('color')(1)
   function save(key) {
     return function (value) {
-      s[key] = value
-      storage.write(SETTINGS_FILE, s)
-      WIDGETS["batpc"].reload()
+      s[key] = value;
+      storage.write(SETTINGS_FILE, s);
+      WIDGETS["batpc"].reload();
     }
   }
 
@@ -54,10 +54,13 @@
         save('color')(s.color)
        }
      },
-    'Hide when \> 20\%': {
-      value: s.hideifmorethan20pct,
-      format: onOffFormat,
-      onchange: save('hideifmorethan20pct'),
+    'Hide if >': {
+      value: s.hideifmorethan||100,
+      min: 10,
+      max : 100,
+      step: 10,
+      format: x => x+"%",
+      onchange: save('hideifmorethan'),
      },
     }
   E.showMenu(menu)

apps/widbatpc/widbatpc.settings.json

@@ -1 +0,0 @@
-{"color":"By Level","percentage":true,"charger":true,"hideifmorethan20pct":false}

apps/widbatpc/widget.js

@@ -1,10 +1,4 @@
 (function(){
-const DEFAULTS = {
-  'color': 'By Level',
-  'percentage': true,
-  'charger': true,
-  'hideifmorethan20pct': false,
-}
 const COLORS = {
   'white': -1,
   'charging': 0x07E0, // "Green"
@@ -17,10 +11,19 @@ const SETTINGS_FILE = 'widbatpc.settings.json'
 let settings
 function loadSettings() {
   settings = require('Storage').readJSON(SETTINGS_FILE, 1) || {}
+  const DEFAULTS = {
+    'color': 'By Level',
+    'percentage': true,
+    'charger': true,
+    'hideifmorethan': 100,
+  };
+  Object.keys(DEFAULTS).forEach(k=>{
+    if (settings[k]===undefined) settings[k]=DEFAULTS[k]
+  });
 }
 function setting(key) {
   if (!settings) { loadSettings() }
-  return (key in settings) ? settings[key] : DEFAULTS[key]
+  return settings[key];
 }
 
 const levelColor = (l) => {
@@ -46,24 +49,27 @@ const levelColor = (l) => {
 const chargerColor = () => {
   return (setting('color') === 'Monochrome') ? COLORS.white : COLORS.charging
 }
-
+// sets width, returns true if it changed
 function setWidth() {
-  WIDGETS["batpc"].width = 40;
-  if (Bangle.isCharging() && setting('charger')) {
-    WIDGETS["batpc"].width += 16;
-  }
+  var w = 40;
+  if (Bangle.isCharging() && setting('charger'))
+    w += 16;
+  if (E.getBattery() > setting('hideifmorethan'))
+    w = 0;
+  var changed = WIDGETS["batpc"].width != w;
+  WIDGETS["batpc"].width = w;
+  return changed;
 }
 function draw() {
-
+  // if hidden, don't draw
+  if (!WIDGETS["batpc"].width) return;
+  // else...
   var s = 39;
   var x = this.x, y = this.y;
   const l = E.getBattery(),
   c = levelColor(l);
   const xl = x+4+l*(s-12)/100
 
-  if(!Bangle.isCharging() && setting('hideifmorethan20pct') && l > 20){
-     return;}
-
   if (Bangle.isCharging() && setting('charger')) {
     g.setColor(chargerColor()).drawImage(atob(
       "DhgBHOBzgc4HOP////////////////////3/4HgB4AeAHgB4AeAHgB4AeAHg"),x,y);
@@ -104,20 +110,24 @@ function reload() {
   g.clear();
   Bangle.drawWidgets();
 }
+// update widget - redraw just widget, or all widgets if size changed
+function update() {
+  if (setWidth()) Bangle.drawWidgets();
+  else WIDGETS["batpc"].draw();
+}
 
 Bangle.on('charging',function(charging) {
   if(charging) Bangle.buzz();
-  setWidth();
-  Bangle.drawWidgets(); // relayout widgets
+  update();
   g.flip();
 });
 var batteryInterval;
 Bangle.on('lcdPower', function(on) {
   if (on) {
-   WIDGETS["batpc"].draw();
+   update();
    // refresh once a minute if LCD on
    if (!batteryInterval)
-     batteryInterval = setInterval(()=>WIDGETS["batpc"].draw(), 60000);
+     batteryInterval = setInterval(update, 60000);
  } else {
    if (batteryInterval) {
      clearInterval(batteryInterval);