updated example clock with fast load code and a screenshot

apps/_example_clock/app.js

@@ -1,44 +1,48 @@
-// timeout used to update every minute
-let drawTimeout;
+{
+  // timeout used to update every minute
+  let drawTimeout;
 
-// schedule a draw for the next minute
-function queueDraw() {
-  if (drawTimeout) clearTimeout(drawTimeout);
-  drawTimeout = setTimeout(function() {
-    drawTimeout = undefined;
-    draw();
-  }, 60000 - (Date.now() % 60000));
+  // schedule a draw for the next minute
+  let queueDraw = function() {
+    if (drawTimeout) clearTimeout(drawTimeout);
+    drawTimeout = setTimeout(function() {
+      drawTimeout = undefined;
+      draw();
+    }, 60000 - (Date.now() % 60000));
+  };
+
+  let draw = function() {
+    // queue next draw in one minute
+    queueDraw();
+    // Work out where to draw...
+    var x = g.getWidth()/2;
+    var y = g.getHeight()/2;
+    g.reset();
+    // work out locale-friendly date/time
+    var date = new Date();
+    var timeStr = require("locale").time(date,1);
+    var dateStr = require("locale").date(date);
+    // draw time
+    g.setFontAlign(0,0).setFont("Vector",48);
+    g.clearRect(0,y-15,g.getWidth(),y+25); // clear the background
+    g.drawString(timeStr,x,y);
+    // draw date
+    y += 35;
+    g.setFontAlign(0,0).setFont("6x8");
+    g.clearRect(0,y-4,g.getWidth(),y+4); // clear the background
+    g.drawString(dateStr,x,y);
+  };
+
+  // Clear the screen once, at startup
+  g.clear();
+  // draw immediately at first, queue update
+  draw();
+
+  // Show launcher when middle button pressed
+  Bangle.setUI({mode:"clock", remove:function() {
+    // free any memory we allocated to allow fast loading
+  }});
+  // Load widgets
+  Bangle.loadWidgets();
+  Bangle.drawWidgets();
 }
-
-function draw() {
-  // queue next draw in one minute
-  queueDraw();
-  // Work out where to draw...
-  var x = g.getWidth()/2;
-  var y = g.getHeight()/2;
-  g.reset();
-  // work out locale-friendly date/time
-  var date = new Date();
-  var timeStr = require("locale").time(date,1);
-  var dateStr = require("locale").date(date);
-  // draw time
-  g.setFontAlign(0,0).setFont("Vector",48);
-  g.clearRect(0,y-15,g.getWidth(),y+25); // clear the background
-  g.drawString(timeStr,x,y);
-  // draw date
-  y += 35;
-  g.setFontAlign(0,0).setFont("6x8");
-  g.clearRect(0,y-4,g.getWidth(),y+4); // clear the background
-  g.drawString(dateStr,x,y);
-}
-
-// Clear the screen once, at startup
-g.clear();
-// draw immediately at first, queue update
-draw();
-
-// Show launcher when middle button pressed
-Bangle.setUI("clock");
-// Load widgets
-Bangle.loadWidgets();
-Bangle.drawWidgets();

apps/_example_clock/metadata.json

@@ -4,6 +4,7 @@
   "version":"0.01",
   "description": "A detailed description of my clock",
   "icon": "icon.png",
+  "screenshots": [{"url":"screenshot.png"}],
   "type": "clock",
   "tags": "clock",
   "supports" : ["BANGLEJS2"],