Create app.js

apps/timer/app.js

@@ -0,0 +1,65 @@
+var mins = 7;
+var counter;
+var counterInterval;
+var timers = [9, 7, 5, 3, 1];
+
+function showMainMenu() {
+  const menu = {
+    '': { 'title': 'Timers' },
+  };
+  timers.forEach((timer,idx)=>{
+    menu[timer] = function() {
+      startTimer(timer);
+    };
+  });
+  return E.showMenu(menu);
+}
+ 
+function outOfTime() {
+  if (counterInterval) return;
+  E.showMessage("Out of Time", "My Timer");
+  Bangle.buzz();
+  // again, 3 secs later
+  setTimeout(outOfTime, 3000);
+}
+
+function countDown() {
+  counter--;
+  // Out of time
+  if (counter<=0) {
+    clearInterval(counterInterval);
+    counterInterval = undefined;
+    setWatch(()=>{load();}, BTN1); // Bangle1: BTN2
+    outOfTime();
+    return;
+  }
+
+  function sec2time(counter) {
+    let m = Math.floor(counter / 60);
+    let s = counter - m * 60;
+    if (s < 10)
+      return `${m}:0${s}`;
+    else 
+      return `${m}:${s}`;
+  }
+  
+  g.clear(true);
+  g.drawImage(require("Storage").read("timer.png"),70,20);
+  g.setFontAlign(0,0); // center font
+  g.setFont("Vector",60); // vector font, 80px  
+  // draw the current counter value
+  g.drawString(sec2time(counter),90,120);
+  // optional - this keeps the watch LCD lit up
+  // g.flip();
+}
+
+function startTimer(timer) {
+  counter = timer * 60;
+  // console.log(counter);
+  countDown();
+  if (!counterInterval)
+    counterInterval = setInterval(countDown, 1000);
+}
+
+showMainMenu();
+//startTimer();