widget 'widbt_notify'

New Widget 'widbt_notify' is a bluetooth widget, that vibrates, when the connection gets lost.

apps/widbt_notify/ChangeLog

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+0.02: Tweaks for variable size widget system
+0.03: Ensure redrawing works with variable size widget system
+0.04: Fix automatic update of Bluetooth connection status
+0.05: Make Bluetooth widget thinner, and when on a bright theme use light grey for disabled color
+0.06: Tweaking colors for dark/light themes and low bpp screens
+0.07: Memory usage improvements
+0.08: Disable LCD on, on bluetooth status change
+0.09: Vibrate on connection loss
+0.10: Bug fix
+0.11: Avoid too many notifications. Change disconnected colour to red.

apps/widbt_notify/metadata.json

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+{
+  "id": "widbt_notify",
+  "name": "Bluetooth Widget with Notification",
+  "version": "0.11",
+  "description": "Show the current Bluetooth connection status in the top right of the clock and vibrate when disconnected.",
+  "icon": "widget.png",
+  "type": "widget",
+  "tags": "widget,bluetooth",
+  "supports": ["BANGLEJS","BANGLEJS2"],
+  "storage": [
+    {"name":"widbt_notify.wid.js","url":"widget.js"}
+  ]
+}

apps/widbt_notify/widget.js

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+WIDGETS.bluetooth_notify = {
+    area: "tr",
+    width: 15,
+    warningEnabled: 1,
+    draw: function() {
+        g.reset();
+        if (NRF.getSecurityStatus().connected) {
+            g.setColor((g.getBPP() > 8) ? "#07f" : (g.theme.dark ? "#0ff" : "#00f"));
+        } else {
+            // g.setColor(g.theme.dark ? "#666" : "#999");
+            g.setColor("#f00"); // red is easier to distinguish from blue
+        }
+        g.drawImage(atob("CxQBBgDgFgJgR4jZMawfAcA4D4NYybEYIwTAsBwDAA=="), 2 + this.x, 2 + this.y);
+    },
+    connect: function() {
+        WIDGETS.bluetooth_notify.draw();
+    },
+    disconnect: function() {
+        if(WIDGETS.bluetooth_notify.warningEnabled == 1){
+            Bangle.buzz(700, 1); // buzz on connection loss
+            
+            E.showMessage(/*LANG*/'Connection\nlost.', 'Bluetooth');
+            setInterval(()=>{load();}, 3000); // clear message
+            
+            WIDGETS.bluetooth_notify.warningEnabled = 0;
+            setTimeout('WIDGETS.bluetooth_notify.warningEnabled = 1;', 30000); // re-notify only after 30 seconds.
+        }
+        WIDGETS.bluetooth_notify.draw();
+    }
+};
+
+NRF.on('connect', WIDGETS.bluetooth_notify.connect);
+NRF.on('disconnect', WIDGETS.bluetooth_notify.disconnect);