low-power-mode: initial app

apps/lowpower/ChangeLog

@@ -0,0 +1 @@
+0.01: New app!

apps/lowpower/README.md

@@ -0,0 +1,25 @@
+# Low Power Mode
+
+With this app installed, your Bangle will automatically switch into low power mode when the battery reaches a specified threshold, displaying a simple clock.
+
+# Features
+
+## Time
+[x] Show simple date/time
+[ ] Disable alarms - with a setting?
+
+## No backlight (#2502)
+[x] LCD brightness
+[ ] LCD timeout
+
+## Peripherals
+[x] Disable auto heart rate measurement in health app (#2502)
+[x] Overwrite setGPSPower() function (#2502)
+[ ] Turn off already-running GPS / HRM
+
+## Features
+[ ] Wake on twist -> off (#2502)
+
+# Creator
+
+[bobrippling](https://github.com/bobrippling/)

apps/lowpower/app.js

@@ -0,0 +1,40 @@
+"use strict";
+if (typeof lowpowerInterval !== "undefined")
+    lowpowerInterval = clearInterval(lowpowerInterval);
+Bangle.setLCDBrightness(0);
+Bangle.setGPSPower = Bangle.setHRMPower = function (_val, _name) { return false; };
+Bangle.removeAllListeners();
+var nextDraw;
+var draw = function () {
+    var x = g.getWidth() / 2;
+    var y = g.getHeight() / 2 - 48;
+    var date = new Date();
+    var timeStr = require("locale").time(date, 1);
+    var dateStr = require("locale").date(date, 0).toUpperCase() +
+        "\n" +
+        require("locale").dow(date, 0).toUpperCase();
+    g.reset()
+        .clearRect(Bangle.appRect)
+        .setFont("Vector", 32)
+        .setFontAlign(0, 0)
+        .drawString(timeStr, x, y)
+        .setFont("Vector", 24)
+        .drawString(dateStr, x, y + 56)
+        .drawString("".concat(E.getBattery(), "%"), x, y + 104);
+    if (nextDraw)
+        clearTimeout(nextDraw);
+    nextDraw = setTimeout(function () {
+        nextDraw = undefined;
+        draw();
+    }, 60000 - (date.getTime() % 60000));
+};
+Bangle.setUI({
+    mode: "clock",
+    remove: function () {
+        if (nextDraw)
+            clearTimeout(nextDraw);
+        nextDraw = undefined;
+    },
+});
+g.clear();
+draw();

apps/lowpower/app.ts

@@ -0,0 +1,52 @@
+// from boot.js
+if(typeof lowpowerInterval !== "undefined")
+  lowpowerInterval = clearInterval(lowpowerInterval) as undefined;
+
+// backlight
+Bangle.setLCDBrightness(0);
+
+// peripherals
+Bangle.setGPSPower = Bangle.setHRMPower = (_val: boolean, _name: string) => false;
+
+// events
+Bangle.removeAllListeners();
+
+// clock
+let nextDraw: number | undefined;
+const draw = () => {
+  const x = g.getWidth() / 2;
+  const y = g.getHeight() / 2 - 48;
+
+  const date = new Date();
+
+  const timeStr = require("locale").time(date, 1);
+  const dateStr = require("locale").date(date, 0).toUpperCase() +
+    "\n" +
+    require("locale").dow(date, 0).toUpperCase();
+
+  g.reset()
+    .clearRect(Bangle.appRect)
+    .setFont("Vector", 32)
+    .setFontAlign(0, 0)
+    .drawString(timeStr, x, y)
+    .setFont("Vector", 24)
+    .drawString(dateStr, x, y + 56)
+    .drawString(`${E.getBattery()}%`, x, y + 104);
+
+  if(nextDraw) clearTimeout(nextDraw);
+  nextDraw = setTimeout(() => {
+    nextDraw = undefined;
+    draw();
+  }, 60000 - (date.getTime() % 60000));
+};
+
+Bangle.setUI({
+  mode: "clock",
+  remove: () => {
+    if (nextDraw) clearTimeout(nextDraw);
+    nextDraw = undefined;
+  },
+});
+
+g.clear();
+draw();

apps/lowpower/boot.js

@@ -0,0 +1,8 @@
+"use strict";
+var lowpowerInterval = setInterval(function () {
+    if (Bangle.isCharging())
+        return;
+    if (E.getBattery() > 5)
+        return;
+    load("lowpower.app.js");
+}, 5 * 60 * 1000);

apps/lowpower/boot.ts

@@ -0,0 +1,8 @@
+let lowpowerInterval: number | undefined = setInterval(() => {
+  if(Bangle.isCharging())
+    return;
+  if(E.getBattery() > 5)
+    return;
+
+  load("lowpower.app.js");
+}, 5 * 60 * 1000);

apps/lowpower/metadata.json

@@ -0,0 +1,15 @@
+{
+  "id": "lowpower",
+  "name": "Low Power Mode",
+  "version": "0.01",
+  "description": "Switches to displaying a simple clock when the battery percentage is low, nothing more",
+  "readme": "README.md",
+  "icon": "TODOOOOOOOOOOOOOOOO.png",
+  "type": "clock",
+  "tags": "clock",
+  "supports": ["BANGLEJS2"],
+  "storage": [
+    {"name":"lowpower.boot.js","url":"boot.js"},
+    {"name":"lowpower.app.js","url":"app.js"}
+  ]
+}