miclock2 maintenance

- Register as clock
- Implement fast loading

apps/miclock2/ChangeLog

@@ -1,3 +1,4 @@
 0.01: New App!
 0.02: Redraw only when seconds change
 0.03: Fix typo in redraw check
+0.04: Register as clock and implement fast loading

apps/miclock2/clock-mixed.js

@@ -1,29 +1,30 @@
 // Code based on the original Mixed Clock
 
+{
 /* jshint esversion: 6 */
-var locale = require("locale");
+const locale = require("locale");
 const Radius = { "center": 7, "hour": 60, "min": 80, "dots": 88 };
 const Center = { "x": 120, "y": 96 };
 const Widths = { hour: 2, minute: 2 };
-var buf = Graphics.createArrayBuffer(240,192,1,{msb:true});
+const buf = Graphics.createArrayBuffer(240,192,1,{msb:true});
-var lastDate = new Date();
+let timeoutId;
 
-function rotatePoint(x, y, d) {
+const rotatePoint = function(x, y, d, center, res) {
-    rad = -1 * d / 180 * Math.PI;
+  "jit";
-    var sin = Math.sin(rad);
+  const rad = -1 * d / 180 * Math.PI;
-    var cos = Math.cos(rad);
+  const sin = Math.sin(rad);
-    xn = ((Center.x + x * cos - y * sin) + 0.5) | 0;
+  const cos = Math.cos(rad);
-    yn = ((Center.y + x * sin - y * cos) + 0.5) | 0;
+  res[0] = ((center.x + x * cos - y * sin) + 0.5) | 0;
-    p = [xn, yn];
+  res[1] = ((center.y + x * sin - y * cos) + 0.5) | 0;
-    return p;
+};
-}
 
 
 // from https://github.com/espruino/Espruino/issues/1702
-function setLineWidth(x1, y1, x2, y2, lw) {
+const setLineWidth = function(x1, y1, x2, y2, lw) {
-    var dx = x2 - x1;
+    "ram";
-    var dy = y2 - y1;
+    let dx = x2 - x1;
-    var d = Math.sqrt(dx * dx + dy * dy);
+    let dy = y2 - y1;
+    let d = Math.sqrt(dx * dx + dy * dy);
     dx = dx * lw / d;
     dy = dy * lw / d;
 
@@ -44,71 +45,85 @@ function setLineWidth(x1, y1, x2, y2, lw) {
         x2 - dy, y2 + dx,
         x1 - dy, y1 + dx
     ];
-}
+};
 
-function drawMixedClock(force) {
+const drawMixedClock = function() {
-  var date = new Date();
+  "ram";
-  if ((force || Bangle.isLCDOn()) && buf.buffer && date.getSeconds() !== lastDate.getSeconds()) {
+  const date = new Date();
-    lastDate = date;
+  const dateArray = date.toString().split(" ");
-    var dateArray = date.toString().split(" ");
+  const isEn = locale.name.startsWith("en");
-    var isEn = locale.name.startsWith("en");
+  let point = [0, 0];
-    var point = [];
+  const minute = date.getMinutes();
-    var minute = date.getMinutes();
+  const hour = date.getHours();
-    var hour = date.getHours();
+  let radius;
-    var radius;
 
-    g.reset();
+  g.reset();
-    buf.clear();
+  buf.clear();
 
-    // draw date
+  // draw date
-    buf.setFont("6x8", 2);
+  buf.setFont("6x8", 2);
-    buf.setFontAlign(-1, 0);
+  buf.setFontAlign(-1, 0);
-    buf.drawString(locale.dow(date,true) + ' ', 4, 16, true);
+  buf.drawString(locale.dow(date,true) + ' ', 4, 16, true);
-    buf.drawString(isEn?(' ' + dateArray[2]):locale.month(date,true), 4, 176, true);
+  buf.drawString(isEn?(' ' + dateArray[2]):locale.month(date,true), 4, 176, true);
-    buf.setFontAlign(1, 0);
+  buf.setFontAlign(1, 0);
-    buf.drawString(isEn?locale.month(date,true):(' ' + dateArray[2]), 237, 16, true);
+  buf.drawString(isEn?locale.month(date,true):(' ' + dateArray[2]), 237, 16, true);
-    buf.drawString(dateArray[3], 237, 176, true);
+  buf.drawString(dateArray[3], 237, 176, true);
 
-    // draw hour and minute dots
+  // draw hour and minute dots
-    for (i = 0; i < 60; i++) {
+  for (i = 0; i < 60; i++) {
-        radius = (i % 5) ? 2 : 4;
+      radius = (i % 5) ? 2 : 4;
-        point = rotatePoint(0, Radius.dots, i * 6);
+      rotatePoint(0, Radius.dots, i * 6, Center, point);
-        buf.fillCircle(point[0], point[1], radius);
+      buf.fillCircle(point[0], point[1], radius);
-    }
-
-    // draw digital time
-    buf.setFont("6x8", 3);
-    buf.setFontAlign(0, 0);
-    buf.drawString(dateArray[4], 120, 120, true);
-
-    // draw new minute hand
-    point = rotatePoint(0, Radius.min, minute * 6);
-    buf.drawLine(Center.x, Center.y, point[0], point[1]);
-    buf.fillPoly(setLineWidth(Center.x, Center.y, point[0], point[1], Widths.minute));
-    // draw new hour hand
-    point = rotatePoint(0, Radius.hour, hour % 12 * 30 + date.getMinutes() / 2 | 0);
-    buf.fillPoly(setLineWidth(Center.x, Center.y, point[0], point[1], Widths.hour));
-
-    // draw center
-    buf.fillCircle(Center.x, Center.y, Radius.center);
-
-    g.drawImage({width:buf.getWidth(),height:buf.getHeight(),bpp:1,buffer:buf.buffer},0,24);
   }
-}
 
-Bangle.on('lcdPower', function(on) {
+  // draw digital time
-  if (on)
+  buf.setFont("6x8", 3);
-    drawMixedClock(true);
+  buf.setFontAlign(0, 0);
-    Bangle.drawWidgets();
+  buf.drawString(dateArray[4], 120, 120, true);
-});
 
-setInterval(() => drawMixedClock(true), 30000); // force an update every 30s even screen is off
+  // draw new minute hand
+  rotatePoint(0, Radius.min, minute * 6, Center, point);
+  buf.drawLine(Center.x, Center.y, point[0], point[1]);
+  buf.fillPoly(setLineWidth(Center.x, Center.y, point[0], point[1], Widths.minute));
+  // draw new hour hand
+  rotatePoint(0, Radius.hour, hour % 12 * 30 + date.getMinutes() / 2 | 0, Center, point);
+  buf.fillPoly(setLineWidth(Center.x, Center.y, point[0], point[1], Widths.hour));
+
+  // draw center
+  buf.fillCircle(Center.x, Center.y, Radius.center);
+
+  g.drawImage({width:buf.getWidth(),height:buf.getHeight(),bpp:1,buffer:buf.buffer},0,24);
+
+  if (timeoutId !== undefined) {
+    clearTimeout(timeoutId);
+  }
+  const period = (Bangle.isLCDOn() ? 1000 : 60000); // Update every second if display is on else every minute
+  let timeout = period - (Date.now() % period);
+  timeoutId = setTimeout(()=>{
+      timeoutId = undefined;
+      drawMixedClock();
+  }, timeout);
+};
+
+const onLCDPower = function(on) {
+    if (on) {
+      drawMixedClock();
+      Bangle.drawWidgets();
+    }
+};
+Bangle.on('lcdPower', onLCDPower);
 
 g.clear();
 Bangle.loadWidgets();
 Bangle.drawWidgets();
 drawMixedClock(); // immediately draw
-setInterval(drawMixedClock, 500); // update twice a second
 
-// Show launcher when middle button pressed after freeing memory first
+Bangle.setUI({mode:"clock", remove:function() {
-setWatch(() => {delete buf.buffer; Bangle.showLauncher()}, BTN2, {repeat:false,edge:"falling"});
+  if (timeoutId !== undefined) {
+    delete buf.buffer;
+    clearTimeout(timeoutId);
+    timeoutId = undefined;
+    Bangle.removeListener('lcdPower',onLCDPower);
+  }
+}});
+}

apps/miclock2/metadata.json

@@ -1,7 +1,7 @@
 {
   "id": "miclock2",
   "name": "Mixed Clock 2",
-  "version": "0.03",
+  "version": "0.04",
   "description": "White color variant of the Mixed Clock with thicker clock hands for better readability in the bright sunlight, extra space under the clock for widgets and seconds in the digital clock.",
   "icon": "clock-mixed.png",
   "type": "clock",