Add Navigation handling to Bangle.js

Add extra 'ETA' field to NavigationInfoSpec
Allow Local Notifications from Google Maps to be parsed into NavigationInfoSpec by GoogleMapsNotificationHandler

Moved notification handling after blacklist check as per https://codeberg.org/Freeyourgadget/Gadgetbridge/pulls/3136#issuecomment-920095

Ensure we don't create a nav message for 'Location Shared with you' messages.
Recognise 'ft' as a distance unit and convert accordingly

Google Maps navigation: Adding new recognised icons, and removing warnings/errors from file

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/banglejs/BangleJSCoordinator.java

@@ -205,4 +205,9 @@ public class BangleJSCoordinator extends AbstractBLEDeviceCoordinator {
         for (int i=0; i<settings.size(); i++) settingsInt[i] = settings.get(i);
         return settingsInt;
     }
+
+    @Override
+    public boolean supportsNavigation() {
+        return true;
+    }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/externalevents/NotificationListener.java

@@ -71,6 +71,7 @@ import nodomain.freeyourgadget.gadgetbridge.entities.NotificationFilter;
 import nodomain.freeyourgadget.gadgetbridge.entities.NotificationFilterDao;
 import nodomain.freeyourgadget.gadgetbridge.entities.NotificationFilterEntry;
 import nodomain.freeyourgadget.gadgetbridge.entities.NotificationFilterEntryDao;
+import nodomain.freeyourgadget.gadgetbridge.externalevents.notifications.GoogleMapsNotificationHandler;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.model.AppNotificationType;
 import nodomain.freeyourgadget.gadgetbridge.model.CallSpec;
@@ -128,6 +129,8 @@ public class NotificationListener extends NotificationListenerService {
     private Runnable mSetMusicInfoRunnable = null;
     private Runnable mSetMusicStateRunnable = null;
 
+    private GoogleMapsNotificationHandler googleMapsNotificationHandler = new GoogleMapsNotificationHandler();
+
     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
 
         @Override
@@ -277,6 +280,9 @@ public class NotificationListener extends NotificationListenerService {
 
         if (shouldIgnoreSource(sbn)) return;
 
+        /* Check for navigation notifications and ignore if we're handling them */
+        if (googleMapsNotificationHandler.handle(getApplicationContext(), sbn)) return;
+
         // If media notifications do NOT ignore app list, check them after
         if (!mediaIgnoresAppList && handleMediaSessionNotification(sbn)) return;
 
@@ -730,6 +736,8 @@ public class NotificationListener extends NotificationListenerService {
 
         notificationStack.remove(sbn.getPackageName());
 
+        googleMapsNotificationHandler.handleRemove(sbn);
+
         if (isServiceNotRunningAndShouldIgnoreNotifications()) return;
 
         final Prefs prefs = GBApplication.getPrefs();

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/externalevents/notifications/GoogleMapsNotificationHandler.java

@@ -0,0 +1,757 @@
+package nodomain.freeyourgadget.gadgetbridge.externalevents.notifications;
+
+import android.app.Notification;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.Icon;
+import android.service.notification.StatusBarNotification;
+
+import androidx.core.app.NotificationCompat;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+import nodomain.freeyourgadget.gadgetbridge.model.NavigationInfoSpec;
+
+public class GoogleMapsNotificationHandler {
+
+    private static final Logger LOG = LoggerFactory.getLogger(GoogleMapsNotificationHandler.class);
+
+    static class IconType {
+        int[] icon;
+        int iconType;
+
+        public IconType(int iconType, int[] icon) {
+            this.icon = icon;
+            this.iconType = iconType;
+        }
+    }
+    List<IconType> knownImages;
+
+    public GoogleMapsNotificationHandler() {
+        knownImages = new ArrayList<>();
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_CONTINUE, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000001000000000000000,
+                0b00000000000000011100000000000000,
+                0b00000000000000111110000000000000,
+                0b00000000000011111111000000000000,
+                0b00000000000111111111100000000000,
+                0b00000000001111111111110000000000,
+                0b00000000011111111111111000000000,
+                0b00000000111110111101111100000000,
+                0b00000000111100111100111100000000,
+                0b00000000011000111100011100000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_CONTINUE, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000001000000000000000,
+                0b00000000000000011100000000000000,
+                0b00000000000000111110000000000000,
+                0b00000000000011111111000000000000,
+                0b00000000000111111111100000000000,
+                0b00000000001111111111110000000000,
+                0b00000000011111111111111000000000,
+                0b00000000111110111101111100000000,
+                0b00000000111100111100111100000000,
+                0b00000000011000111100011100000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_TURN_LEFT, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000001100000000000000000000,
+                0b00000000011110000000000000000000,
+                0b00000000111110000000000000000000,
+                0b00000001111100000000000000000000,
+                0b00000011111000000000000000000000,
+                0b00000111110000000000000000000000,
+                0b00001111111111111111111110000000,
+                0b00011111111111111111111111100000,
+                0b00001111111111111111111111110000,
+                0b00000111100000000000000111111000,
+                0b00000011110000000000000001111000,
+                0b00000011111000000000000000111000,
+                0b00000001111100000000000000111000,
+                0b00000000111110000000000000111000,
+                0b00000000011110000000000000111000,
+                0b00000000000100000000000000111000,
+                0b00000000000000000000000000111000,
+                0b00000000000000000000000000111000,
+                0b00000000000000000000000000111000,
+                0b00000000000000000000000000111000,
+                0b00000000000000000000000000111000,
+                0b00000000000000000000000000111000,
+                0b00000000000000000000000000111000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_TURN_RIGHT, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000110000000000,
+                0b00000000000000000001111000000000,
+                0b00000000000000000001111100000000,
+                0b00000000000000000000111110000000,
+                0b00000000000000000000011111000000,
+                0b00000000000000000000001111100000,
+                0b00000001111111111111111111110000,
+                0b00000111111111111111111111111000,
+                0b00001111111111111111111111111000,
+                0b00001111100000000000000111110000,
+                0b00011110000000000000001111100000,
+                0b00011100000000000000011111000000,
+                0b00011100000000000000111110000000,
+                0b00011100000000000001111100000000,
+                0b00011100000000000001111000000000,
+                0b00011100000000000000100000000000,
+                0b00011100000000000000000000000000,
+                0b00011100000000000000000000000000,
+                0b00011100000000000000000000000000,
+                0b00011100000000000000000000000000,
+                0b00011100000000000000000000000000,
+                0b00011100000000000000000000000000,
+                0b00011100000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_TURN_LEFT_SLIGHTLY, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000111111111111000000000000,
+                0b00000000111111111111000000000000,
+                0b00000000111111111111000000000000,
+                0b00000000111111000000000000000000,
+                0b00000000111111100000000000000000,
+                0b00000000111111110000000000000000,
+                0b00000000111011111000000000000000,
+                0b00000000111001111100000000000000,
+                0b00000000111000111110000000000000,
+                0b00000000111000011111000000000000,
+                0b00000000111000001111100000000000,
+                0b00000000111000000111110000000000,
+                0b00000000000000000011111000000000,
+                0b00000000000000000001111000000000,
+                0b00000000000000000000111100000000,
+                0b00000000000000000000011100000000,
+                0b00000000000000000000011110000000,
+                0b00000000000000000000011110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+    }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_TURN_RIGHT_SLIGHTLY, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000011111111111100000000,
+                0b00000000000011111111111100000000,
+                0b00000000000011111111111100000000,
+                0b00000000000000000011111100000000,
+                0b00000000000000000111111100000000,
+                0b00000000000000001111111100000000,
+                0b00000000000000011111011100000000,
+                0b00000000000000111110011100000000,
+                0b00000000000001111100011100000000,
+                0b00000000000011111000011100000000,
+                0b00000000000111110000011100000000,
+                0b00000000001111100000011100000000,
+                0b00000000011111000000000000000000,
+                0b00000000011110000000000000000000,
+                0b00000000111100000000000000000000,
+                0b00000000111000000000000000000000,
+                0b00000001111000000000000000000000,
+                0b00000001111000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_FINISH, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000011111111000000000000,
+                0b00000000001111111111110000000000,
+                0b00000000011111000011111000000000,
+                0b00000000111100000000111100000000,
+                0b00000001111000000000011110000000,
+                0b00000001110000000000001110000000,
+                0b00000011100000000000000111000000,
+                0b00000011100000000000000111000000,
+                0b00000011000000111100000011000000,
+                0b00000111000001111110000011100000,
+                0b00000111000001111110000011100000,
+                0b00000111000000111100000011100000,
+                0b00000111000000111100000011100000,
+                0b00000011000000000000000011000000,
+                0b00000011100000000000000111000000,
+                0b00000011100000000000000111000000,
+                0b00000001110000000000001110000000,
+                0b00000000111000000000011100000000,
+                0b00000000111100000000111100000000,
+                0b00000000011100000000111000000000,
+                0b00000000001110000001110000000000,
+                0b00000000000111000011100000000000,
+                0b00000000000011111111000000000000,
+                0b00000000000001111110000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000011000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_FINISH, new int[]{
+                0b00000000000000000000000000000000,
+                0b00000000111000000000000000000000,
+                0b00000111111110000000000000000000,
+                0b00001111111111100000000000000000,
+                0b00011110000011110000000000000000,
+                0b00111100000001110000000000000000,
+                0b00111000000000111000000000000000,
+                0b00110000010000111000000000000000,
+                0b01110000111000011000000000000000,
+                0b01110001111000011000000000000000,
+                0b01110000111000011000000000000000,
+                0b00110000000000111000000000000000,
+                0b00111000000000111000000000000000,
+                0b00111000000001110000000000000000,
+                0b00011100000001110000000000000000,
+                0b00011100000011100011000111100000,
+                0b00001110000011100111000111100000,
+                0b00001111000111000111111111110000,
+                0b00000111001111001111111111110000,
+                0b00000011101110011111111111110000,
+                0b00000011111100011111000111110000,
+                0b00000001111000111111000111111000,
+                0b00000000111000111111000111111000,
+                0b00000000010001111111111111111000,
+                0b00000000000001111111111111111100,
+                0b00000000000001111111000111111100,
+                0b00000000000011111111000111111100,
+                0b00000000000011111111000111111110,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_LEFT, new int[]{
+                0b000000000000000000000000000000000,
+                0b000000000000000000000000000000000,
+                0b000000000000000000000000000000000,
+                0b000000000000000000000000000000000,
+                0b000000001111111111100000000000000,
+                0b000000001111111111110000000000000,
+                0b000000001111111111110000000000000,
+                0b000000001111100000000000000000000,
+                0b000000001111110000000000000000000,
+                0b000000001111111000000000000000000,
+                0b000000001111111100000000000000000,
+                0b000000001110111110000000000000000,
+                0b000000001110011111000000000000000,
+                0b000000001110001111100000000000000,
+                0b000000001110001111000000000000000,
+                0b000000001110011110000000000000000,
+                0b000000000000011110000000000000000,
+                0b000000000000011100000000000000000,
+                0b000000000000011100000000000000000,
+                0b000000000000011110000000000000000,
+                0b000000000000011110000000000000000,
+                0b000000000000001111000000000000000,
+                0b000000000000000111111100000000000,
+                0b000000000000000111111100000000000,
+                0b000000000000000001111100000000000,
+                0b000000000000000000011100000000000,
+                0b000000000000000000011100000000000,
+                0b000000000000000000011100000000000,
+                0b000000000000000000000000000000000,
+                0b000000000000000000000000000000000,
+                0b000000000000000000000000000000000,
+                0b000000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_RIGHT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000111111111110000000,
+                0b00000000000001111111111110000000,
+                0b00000000000001111111111110000000,
+                0b00000000000000000000111110000000,
+                0b00000000000000000001111110000000,
+                0b00000000000000000011111110000000,
+                0b00000000000000000111111110000000,
+                0b00000000000000001111101110000000,
+                0b00000000000000011111001110000000,
+                0b00000000000000111110001110000000,
+                0b00000000000000011110001110000000,
+                0b00000000000000001111001110000000,
+                0b00000000000000001111000000000000,
+                0b00000000000000000111000000000000,
+                0b00000000000000000111000000000000,
+                0b00000000000000001111000000000000,
+                0b00000000000000001111000000000000,
+                0b00000000000000011110000000000000,
+                0b00000000000111111100000000000000,
+                0b00000000000111111100000000000000,
+                0b00000000000111110000000000000000,
+                0b00000000000111000000000000000000,
+                0b00000000000111000000000000000000,
+                0b00000000000111000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_STRAIGHT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000011000000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000001111110000000000000,
+                0b00000000000011111111000000000000,
+                0b00000000000111111111100000000000,
+                0b00000000001111111111110000000000,
+                0b00000000011110111101111000000000,
+                0b00000000111100111100111100000000,
+                0b00000000111000111100011100000000,
+                0b00000000000000111100000000000000,
+                0b00000000000011111100000000000000,
+                0b00000000000111111100000000000000,
+                0b00000000001111111100000000000000,
+                0b00000000011111000000000000000000,
+                0b00000000011110000000000000000000,
+                0b00000000011100000000000000000000,
+                0b00000000011100000000000000000000,
+                0b00000000011100000000000000000000,
+                0b00000000011100000000000000000000,
+                0b00000000011110000000000000000000,
+                0b00000000011111000000000000000000,
+                0b00000000001111111100000000000000,
+                0b00000000000111111100000000000000,
+                0b00000000000011111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_STRAIGHT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000011000000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000001111110000000000000,
+                0b00000000000011111111000000000000,
+                0b00000000000111111111100000000000,
+                0b00000000001111111111110000000000,
+                0b00000000011110111101111000000000,
+                0b00000000111100111100111100000000,
+                0b00000000111000111100011100000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111111000000000000,
+                0b00000000000000111111100000000000,
+                0b00000000000000111111110000000000,
+                0b00000000000000000011111000000000,
+                0b00000000000000000001111000000000,
+                0b00000000000000000000111000000000,
+                0b00000000000000000000111000000000,
+                0b00000000000000000000111000000000,
+                0b00000000000000000000111000000000,
+                0b00000000000000000001111000000000,
+                0b00000000000000000011111000000000,
+                0b00000000000000111111110000000000,
+                0b00000000000000111111100000000000,
+                0b00000000000000111111000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000111100000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_LEFT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000011000000000000000000000,
+                0b00000000111100000000000000000000,
+                0b00000001111100000000000000000000,
+                0b00000011111000000000000000000000,
+                0b00000111110000000000000000000000,
+                0b00001111100000000000000000000000,
+                0b00011111111111111110000000000000,
+                0b00111111111111111110000000000000,
+                0b00111111111111111111000000000000,
+                0b00011111111111111111000000000000,
+                0b00001111100000001111000000000000,
+                0b00000111110000000111110000000000,
+                0b00000011111000000011111110000000,
+                0b00000001111100000011111111000000,
+                0b00000000111100000000111110000000,
+                0b00000000011000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_RIGHT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000011000000000,
+                0b00000000000000000000111100000000,
+                0b00000000000000000000111110000000,
+                0b00000000000000000000011111000000,
+                0b00000000000000000000001111100000,
+                0b00000000000000000000000111110000,
+                0b00000000000001111111111111111000,
+                0b00000000000001111111111111111100,
+                0b00000000000011111111111111111100,
+                0b00000000000011111111111111111000,
+                0b00000000000011110000000111110000,
+                0b00000000001111100000001111100000,
+                0b00000001111111000000011111000000,
+                0b00000011111111000000111110000000,
+                0b00000001111100000000111100000000,
+                0b00000001110000000000011000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_LEFT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000111111111111000000000000000,
+                0b00000111111111111000000000000000,
+                0b00000111111111111000000000000000,
+                0b00000111111100000000000000000000,
+                0b00000111111100000000000000000000,
+                0b00000111111110000000000000000000,
+                0b00000111111111000000000000000000,
+                0b00000111101111101111111000000000,
+                0b00000111100111111111111100000000,
+                0b00000111100011111111111110000000,
+                0b00000111100001111100011111000000,
+                0b00000011000000110000001111000000,
+                0b00000000000000000000000111100000,
+                0b00000000000000000000000111100000,
+                0b00000000000000000000000111100000,
+                0b00000000000000000000000111100000,
+                0b00000000000000000000001111000000,
+                0b00000000000000000000011111000000,
+                0b00000000000000000111111110000000,
+                0b00000000000000000111111100000000,
+                0b00000000000000000111111000000000,
+                0b00000000000000000011100000000000,
+                0b00000000000000000011100000000000,
+                0b00000000000000000011100000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_RIGHT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000011111111111100000,
+                0b00000000000000011111111111100000,
+                0b00000000000000011111111111100000,
+                0b00000000000000000000111111100000,
+                0b00000000000000000000111111100000,
+                0b00000000000000000001111111100000,
+                0b00000000000000000011111111100000,
+                0b00000000011111110111110111100000,
+                0b00000000111111111111100111100000,
+                0b00000001111111111111000111100000,
+                0b00000011111000111110000111100000,
+                0b00000011110000001100000011000000,
+                0b00000111100000000000000000000000,
+                0b00000111100000000000000000000000,
+                0b00000111100000000000000000000000,
+                0b00000111100000000000000000000000,
+                0b00000011110000000000000000000000,
+                0b00000011111000000000000000000000,
+                0b00000001111111100000000000000000,
+                0b00000000111111100000000000000000,
+                0b00000000011111100000000000000000,
+                0b00000000000111000000000000000000,
+                0b00000000000111000000000000000000,
+                0b00000000000111000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_LEFT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000011000000000000000000000,
+                0b00000000111100000000111111100000,
+                0b00000001111100000011111111110000,
+                0b00000011111000000111111111111000,
+                0b00000111110000000111110001111100,
+                0b00001111100000001111000000111100,
+                0b00011111111111111111000000011110,
+                0b00111111111111111110000000011110,
+                0b00111111111111111110000000011110,
+                0b00011111111111111110000000011110,
+                0b00001111100000000000000000111100,
+                0b00000111110000000000000001111100,
+                0b00000011111000000000011111111000,
+                0b00000001111100000000011111110000,
+                0b00000000111100000000011111100000,
+                0b00000000011000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000001110000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+        knownImages.add(new IconType(NavigationInfoSpec.ACTION_ROUNDABOUT_RIGHT, new int[]{
+                0b00000000000000000000000000000000,// GUESSED - this may not be an exact match
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000011000000000,
+                0b00000111111100000000111100000000,
+                0b00001111111111000000111110000000,
+                0b00011111111111100000011111000000,
+                0b00111110001111100000001111100000,
+                0b00111100000011110000000111110000,
+                0b01111000000011111111111111111000,
+                0b01111000000001111111111111111100,
+                0b01111000000001111111111111111100,
+                0b01111000000001111111111111111000,
+                0b00111100000000000000000111110000,
+                0b00111110000000000000001111100000,
+                0b00011111111000000000011111000000,
+                0b00001111111000000000111110000000,
+                0b00000111111000000000111100000000,
+                0b00000001110000000000011000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000001110000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000,
+                0b00000000000000000000000000000000
+        }));
+    }
+
+    public boolean handle(Context context, StatusBarNotification sbn) {
+        if (sbn.getPackageName().equals("com.google.android.apps.maps")) {
+            Notification notification = sbn.getNotification();
+            if (!NotificationCompat.getLocalOnly(notification))
+                return false; // ignore non-local notifications
+            
+            String distance = (notification.extras.get("android.title")==null) ? "" :
+                    notification.extras.get("android.title").toString(); // eg 100 yd
+            String instruction = (notification.extras.get("android.text")==null) ? "" :
+                    notification.extras.get("android.text").toString(); // eg: High St towards Blah
+            String navLine = (notification.extras.get("android.subText")==null) ? "" :
+                    notification.extras.get("android.subText").toString().replaceAll("\u00A0", " ");  // eg: 13 min · 4.6 mi · 11:55 ETA
+            String[] navLines = navLine.split("·");
+            for (int i = 0; i < navLines.length; i++) navLines[i] = navLines[i].trim();
+            if (navLines.length < 3) return false; // not in the format we expected - might be 'Shared with you' notification
+            // navLines now has at least 3 elements
+            LOG.info("Navigation: " + instruction + "," + distance + "," + navLines[0] + "," + navLines[1] + "," + navLines[2]);
+            int matchedIcon = -1;
+            // getLargeIcon only works in API 23+ - don't try and get icons on older devices
+            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
+                Icon icon = notification.getLargeIcon();
+                if (icon != null) {
+                    // We convert the icon to a bitmap, then to x 32x32 1bpp which we'll check against known images
+                    Drawable drawable = icon.loadDrawable(context);
+                    Bitmap bitmap = Bitmap.createBitmap(32, 32, Bitmap.Config.ARGB_8888); // Single color bitmap will be created of 1x1 pixel
+                    Canvas canvas = new Canvas(bitmap);
+                    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
+                    drawable.draw(canvas);
+                    int[] pixelsRGBA = new int[32 * 32];
+                    bitmap.getPixels(pixelsRGBA, 0, 32, 0, 0, 32, 32);
+                    int[] pixelPack = new int[32]; // pixels packed down 1bpp
+                    char[] pixelStringChars = new char[33 * 32];
+
+                    for (int y = 0; y < 32; y++) {
+                        int pack = 0;
+                        for (int x = 0; x < 32; x++) {
+                            int pixel = ((pixelsRGBA[(y * 32) + x] & 0x80000000) != 0) ? 1 : 0;
+                            pack = (pack << 1) | pixel; // check top bit (=alpha)
+                            pixelStringChars[x + y * 33] = (pixel != 0) ? '1' : '0';
+                        }
+                        pixelStringChars[32 + y * 33] = '\n';
+                        pixelPack[y] = pack;
+                    }
+                    // This is now a printable string showing the image, which we can log if we don't recognise it
+                    String pixelString = new String(pixelStringChars);
+
+                    int bestDiff = 100;
+                    for (int i = 0; i < knownImages.size(); i++) {
+                        IconType knownImage = knownImages.get(i);
+                        int diff = 0;
+                        // Work out how many bits differ over the whole image
+                        for (int j = 0; j < 32; j++)
+                            diff += Integer.bitCount(knownImage.icon[j] ^ pixelPack[j]);
+                        // if it's close enough, match
+                        if (diff < 32 && diff < bestDiff) {
+                            matchedIcon = knownImage.iconType;
+                            bestDiff = diff;
+                        }
+                    }
+                    if (matchedIcon < 0) {
+                        LOG.info("Icon NEW:\n" + pixelString);
+                        knownImages.add(new IconType(255, pixelPack));
+                    }
+                }
+            }
+            NavigationInfoSpec navInfo = new NavigationInfoSpec();
+            if (matchedIcon>=0)
+                navInfo.nextAction = matchedIcon;
+            navInfo.instruction = instruction;
+            if (distance != null) {
+                float distanceMultiplier = 1;
+                String distanceUnit = distance.replaceAll("[\\d.\\s]", "").toLowerCase();
+                if (distanceUnit.equals("m")) distanceMultiplier = 1;
+                else if (distanceUnit.equals("mi")) distanceMultiplier = 1609.34f;
+                else if (distanceUnit.equals("yd")) distanceMultiplier = 0.9144f;
+                else if (distanceUnit.equals("ft")) distanceMultiplier = 0.3048f;
+                else if (distanceUnit.equals("km")) distanceMultiplier = 1000;
+                else LOG.info("Unknown distance unit '"+distanceUnit+"'");
+                try {
+                    navInfo.distanceToTurn = Math.round(distanceMultiplier * Float.parseFloat(distance.replaceAll("[^\\d.]", "")));
+                } catch (NumberFormatException e) {
+                    LOG.info("Couldn't parse distance");
+                }
+            }
+            if (navLines[2].contains("ETA"))
+              navInfo.ETA = navLines[2].replace("ETA","").trim();
+            GBApplication.deviceService().onSetNavigationInfo(navInfo);
+
+            return true;
+        }
+        return false;
+    }
+
+    public boolean handleRemove(StatusBarNotification sbn) {
+        if (sbn.getPackageName().equals("com.google.android.apps.maps")) {
+            Notification notification = sbn.getNotification();
+            if (!NotificationCompat.getLocalOnly(notification))
+                return false; // ignore non-local notifications
+            NavigationInfoSpec navInfo = new NavigationInfoSpec(); // send a blank one to remove
+            GBApplication.deviceService().onSetNavigationInfo(navInfo);
+            return true;
+        }
+        return false;
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/impl/GBDeviceService.java

@@ -294,7 +294,8 @@ public class GBDeviceService implements DeviceService {
         Intent intent = createIntent().setAction(ACTION_SETNAVIGATIONINFO)
                 .putExtra(EXTRA_NAVIGATION_INSTRUCTION, navigationInfoSpec.instruction)
                 .putExtra(EXTRA_NAVIGATION_NEXT_ACTION, navigationInfoSpec.nextAction)
-                .putExtra(EXTRA_NAVIGATION_DISTANCE_TO_TURN, navigationInfoSpec.distanceToTurn);
+                .putExtra(EXTRA_NAVIGATION_DISTANCE_TO_TURN, navigationInfoSpec.distanceToTurn)
+                .putExtra(EXTRA_NAVIGATION_ETA, navigationInfoSpec.ETA);
         invokeService(intent);
     }
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/DeviceService.java

@@ -114,6 +114,7 @@ public interface DeviceService extends EventHandler {
     String EXTRA_NAVIGATION_INSTRUCTION = "navigation_instruction";
     String EXTRA_NAVIGATION_DISTANCE_TO_TURN = "navigation_distance_to_turn";
     String EXTRA_NAVIGATION_NEXT_ACTION = "navigation_next_action";
+    String EXTRA_NAVIGATION_ETA = "navigation_eta";
     String EXTRA_APP_UUID = "app_uuid";
     String EXTRA_APP_START = "app_start";
     String EXTRA_APP_CONFIG = "app_config";

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/NavigationInfoSpec.java

@@ -31,8 +31,12 @@ public class NavigationInfoSpec {
     public static final int ACTION_OFFROUTE = 12;
     public static final int ACTION_ROUNDABOUT_RIGHT = 13;
     public static final int ACTION_ROUNDABOUT_LEFT = 14;
+    public static final int ACTION_ROUNDABOUT_STRAIGHT = 15;
+    public static final int ACTION_FINISH = 16;
 
+    // ETA? Total Distance?
     public String instruction;
-    public int distanceToTurn;
-    public int nextAction;
+    public int distanceToTurn; ///< Distance to turn (in metres?)
+    public int nextAction; ///< One of the ACTION_ constants
+    public String ETA; ///< Estimated time of Arrival
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/DeviceCommunicationService.java

@@ -186,6 +186,7 @@ import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_MUS
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NAVIGATION_DISTANCE_TO_TURN;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NAVIGATION_INSTRUCTION;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NAVIGATION_NEXT_ACTION;
+import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NAVIGATION_ETA;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOTIFICATION_ACTIONS;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOTIFICATION_BODY;
 import static nodomain.freeyourgadget.gadgetbridge.model.DeviceService.EXTRA_NOTIFICATION_DNDSUPPRESSED;
@@ -890,6 +891,7 @@ public class DeviceCommunicationService extends Service implements SharedPrefere
                 navigationInfoSpec.instruction = intent.getStringExtra(EXTRA_NAVIGATION_INSTRUCTION);
                 navigationInfoSpec.nextAction = intent.getIntExtra(EXTRA_NAVIGATION_NEXT_ACTION,0);
                 navigationInfoSpec.distanceToTurn = intent.getIntExtra(EXTRA_NAVIGATION_DISTANCE_TO_TURN,0);
+                navigationInfoSpec.ETA = intent.getStringExtra(EXTRA_NAVIGATION_ETA);
                 deviceSupport.onSetNavigationInfo(navigationInfoSpec);
                 break;
             case ACTION_REQUEST_APPINFO:

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/banglejs/BangleJSDeviceSupport.java

@@ -116,6 +116,7 @@ import nodomain.freeyourgadget.gadgetbridge.model.CannedMessagesSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.DeviceService;
 import nodomain.freeyourgadget.gadgetbridge.model.MusicSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.MusicStateSpec;
+import nodomain.freeyourgadget.gadgetbridge.model.NavigationInfoSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.NotificationSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.RecordedDataTypes;
 import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
@@ -1526,4 +1527,26 @@ public class BangleJSDeviceSupport extends AbstractBTLEDeviceSupport {
         }
     }
 
+    @Override
+    public void onSetNavigationInfo(NavigationInfoSpec navigationInfoSpec) {
+        try {
+            JSONObject o = new JSONObject();
+            o.put("t", "nav");
+            if (navigationInfoSpec.instruction!=null)
+                o.put("instr", navigationInfoSpec.instruction);
+            o.put("distance", navigationInfoSpec.distanceToTurn);
+            String[] navActions = {
+                    "","continue", "left", "left_sharp", "left_slight", "right", "right_slight",
+                    "right_sharp", "keep_left", "keep_right", "uturn_left", "uturn_right",
+                    "offroute", "roundabout_right", "roundabout_left", "roundabout_straight", "finish"};
+            if (navigationInfoSpec.nextAction>0 && navigationInfoSpec.nextAction<navActions.length)
+                o.put("action", navActions[navigationInfoSpec.nextAction]);
+            if (navigationInfoSpec.ETA!=null)
+                o.put("eta", navigationInfoSpec.ETA);
+            uartTxJSON("onSetNavigationInfo", o);
+        } catch (JSONException e) {
+            LOG.info("JSONException: " + e.getLocalizedMessage());
+        }
+    }
+
 }