Merge pull request #2490 from phrogg/widbgjs
widbgjs - Get your xDrip Blood Glucose values on the banglemaster
Gordon Williams
GitHub
commit
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0.01: First release
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# Prerequisites
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For this widget to work and to get data from the phone, you need:
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- An Android phone
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- with xDrip and the <a href="https://codeberg.org/phrogg/BG2BangleJSApp/" target="_BLANK">helper app</a> installed.
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- the <a href="https://f-droid.org/en/packages/com.espruino.gadgetbridge.banglejs/" target="_BLANK">Gadgetbridge app (bangle version)</a> for the Android phone
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- A BangleJS
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- With this widget installed
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# Widget
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## How to use it
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Make sure you have all the prerequisites from above.
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The watch should automatically start displaying values, if there is an arrow visible behind the value, the value is within the not-expired-yet time range changeable in the settings standard is 15 minutes. (I will probably change this in the future, to strike through the text to make expired values clearer).
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## Settings
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In the settings, you can:
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- Disable/hide the widget
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- Change the unit from mmol/L to mg/dL
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- Set a time at which old BG values expire
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# Developer
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Developed by Phil Roggenbuck (<a href="https://github.com/phrogg" target="_BLANK">phrogg</a>)
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# Disclaimer
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As well as xdrip you should not use this app to make medical decisions!
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{
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"id": "widbgjs",
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"name": "Blood Glucose Widget (xdrip)",
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"shortName":"BG Widget",
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"icon": "screenshot.png",
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"screenshots": [{"url":"screenshot.png"}],
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"version":"0.01",
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"type": "widget",
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"supports": ["BANGLEJS", "BANGLEJS2"],
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"readme": "README.md",
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"allow_emulator":true,
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"description": "Displays the current blood glucose received from xdrip and send over via a <a href=\"https://codeberg.org/phrogg/BG2BangleJSApp/\" target=\"_BLANK\">helper app</a> on the watch.",
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"tags": "widget",
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"storage": [
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{"name":"widbgjs.wid.js","url":"widget.js"},
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{"name":"widbgjs.settings.js","url":"settings.js"}
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],
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"data": [
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{"name":"widbgjs.json"},
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{"name":"widbgjs.settings.json"}
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]
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}
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Binary file not shown.
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After Width: | Height: | Size: 16 KiB |
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(function (back) {
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const SAVEFILE = "wpbgjs.settings.json";
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// initialize with default settings...
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let s = {
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'unitIsMmol': true,
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'expireThreshold': 600000,
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'hide': false
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};
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// ...and overwrite them with any saved values
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// This way saved values are preserved if a new version adds more settings
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const storage = require('Storage');
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const d = storage.readJSON(SAVEFILE, 1) || {};
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const saved = d.settings || {};
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for (const key in saved) {
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s[key] = saved[key];
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}
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function save() {
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d.settings = s;
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storage.write(SAVEFILE, d);
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WIDGETS['widbgjs'].draw();
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}
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E.showMenu({
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'': { 'title': 'BG widget' },
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'Unit': {
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value: s.unitIsMmol,
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format: () => (s.unitIsMmol ? 'mmol/L' : 'mg/dL'),
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onchange: () => {
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s.unitIsMmol = !s.unitIsMmol;
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save();
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},
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},
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'Exp. BG': {
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value: s.expireThreshold,
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min: 18000, step: 60000,
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format: s => (s ? s / 60000 + ' min' : '0'),
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onchange: (g) => {
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s.expireThreshold = g;
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save();
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},
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},
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'Hide Widget': {
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value: s.hide,
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format: () => (s.hide ? 'Yes' : 'No'),
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onchange: () => {
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s.hide = !s.hide;
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save();
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},
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},
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'< Back': back,
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});
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});
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//WIDGETS = {}; // <-- for development only
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(() => {
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// persistant vals
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let storedData;
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let settings;
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function loadSettings() { // stolen from https://github.com/espruino/BangleApps/blob/master/apps/widpedom/widget.js
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const d = require('Storage').readJSON("widbgjs.settings.json", 1) || {};
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settings = Object.assign({
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'unitIsMmol': true,
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'expireThreshold': 600000,
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'reloadInterval': 5 * 60000,
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'hide': false
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}, d || {});
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return d;
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}
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function loadVals() {
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try {
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const d = require('Storage').readJSON("widbgjs.json", 1) || {};
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storedData = Object.assign({
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'bg': null,
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'bgTimeStamp': null,
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'bgDirection': null
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}, d || {});
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return d;
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} catch(e) {
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Bangle.removeFile("widbgjs.json");
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}
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return null;
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}
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function calculateRotation(bgDirection) {
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var a = 90;
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// get the arrow right (https://github.com/StephenBlackWasAlreadyTaken/NightWatch/blob/6de1d3775c6e447177c12f387f647628cc8e24ce/mobile/src/main/java/com/dexdrip/stephenblack/nightwatch/Bg.java)
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switch (bgDirection) {
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case ("DoubleDown"):
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g.setColor("#f00");
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a = 180;
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break;
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case ("SingleDown"):
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a = 180;
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break;
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case ("DoubleUp"):
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g.setColor("#f00");
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a = 0;
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break;
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case ("SingleUp"):
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a = 0;
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break;
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case ("FortyFiveUp"):
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a = 45;
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break;
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case ("FortyFiveDown"):
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a = 135;
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break;
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case ("Flat"):
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a = 90;
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break;
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}
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// turn the arrow thanks to (https://forum.espruino.com/conversations/344607/)
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const p180 = Math.PI / 180;
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// a is defined above
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var r = 21;
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var x = r * Math.sin(a * p180);
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var y = r * Math.cos(a * p180);
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return a * p180;
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}
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function getBG(bg) {
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var tmp = null;
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try {
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if (storedData.bg !== null) {
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tmp = bg;
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if (settings.unitIsMmol) {
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tmp /= 18;
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tmp = tmp.toFixed(1);
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}
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}
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} catch (e) { }
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return tmp;
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}
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function isBgTooOld(bgTimeStamp) {
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var currTimeInMilli = new Date().valueOf();
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try {
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if (bgTimeStamp === null) {
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return true;
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}
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if (currTimeInMilli - settings.expireThreshold <= bgTimeStamp) {
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return false;
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}
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} catch (e) { }
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return true;
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}
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function draw() {
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loadSettings();
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try {
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if (settings.hide) return;
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} catch (e) { }
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loadVals();
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outpt = getBG(storedData.bg);
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if (outpt === null) { // this means no value has been received yet
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outpt = "BG";
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bgTimeStamp = "0";
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}
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// prepare to write on the screen
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g.reset().clearRect(this.x, this.y, this.x + this.width, this.y + 23); // erase background
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g.setFont('Vector', 22);
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g.setColor(g.theme.fg);
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// check if the value is too old
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if (!isBgTooOld(storedData.bgTimeStamp)) {
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g.drawImage(atob("FBQBAGAADwAB+AA/wAduAGZgAGAABgAAYAAGAABgAAYAAGAABgAAYAAGAABgAAYAAGAABgA="), this.x + 60, this.y + 9, { rotate: calculateRotation(storedData.bgDirection) });
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}
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g.setColor(g.theme.fg).drawString(outpt, this.x + 5, this.y);
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}
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setInterval(function () {
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WIDGETS["widbgjs"].draw(WIDGETS["widbgjs"]);
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}, 5 * 60000); // update every 5 minutes (%* 60000
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// add your widget
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WIDGETS["widbgjs"] = {
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area: "tl",
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width: 72,
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draw: draw
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};
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})();
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//Bangle.drawWidgets(); // <-- for development only
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