From fa6d5864177bfb68e99f8732068a3402cc5aadfd Mon Sep 17 00:00:00 2001
From: Tobrun <tobrun.van.nuland@gmail.com>
Date: Mon, 14 Nov 2016 10:37:34 +0100
Subject: [PATCH] [android]  - allow using rotate gesture when not tracking
 user location, correctly update bearing during rotation gesture (#6978)

---
 .../mapboxsdk/maps/TrackingSettings.java      |  2 +-
 .../maps/widgets/MyLocationView.java          | 21 ++++++++++++-------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java
index 474af1985..c32d4a890 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java
@@ -199,7 +199,7 @@ public class TrackingSettings {
         //    The user settings are enabled AND;
         //    EITHER bearing tracking is dismissed on gesture OR there is no bearing tracking
         return uiSettings.isRotateGesturesEnabled() &&
-                (dismissBearingTrackingOnGesture || myBearingTrackingMode == MyBearingTracking.NONE);
+                (dismissBearingTrackingOnGesture || myBearingTrackingMode == MyBearingTracking.NONE || (myLocationTrackingMode == MyLocationTracking.TRACKING_NONE));
     }
 
     /**
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java
index 15733eb93..9d3c21c6e 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java
@@ -92,8 +92,9 @@ public class MyLocationView extends View {
     private PointF screenLocation;
 
     // camera vars
-    private double bearing;
     private double tilt;
+    private double bearing;
+    private float magneticHeading;
 
     // Controls the compass update rate in milliseconds
     private static final int COMPASS_UPDATE_RATE_MS = 500;
@@ -314,6 +315,13 @@ public class MyLocationView extends View {
 
     public void setBearing(double bearing) {
         this.bearing = bearing;
+        if (myLocationTrackingMode == MyLocationTracking.TRACKING_NONE) {
+            if (myBearingTrackingMode == MyBearingTracking.GPS) {
+                setCompass(location.getBearing() - bearing);
+            } else if (myBearingTrackingMode == MyBearingTracking.COMPASS) {
+                setCompass(magneticHeading - bearing);
+            }
+        }
     }
 
     public void setCameraPosition(CameraPosition position) {
@@ -451,6 +459,8 @@ public class MyLocationView extends View {
             if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
                 // always face north
                 setCompass(0);
+            } else {
+                myLocationBehavior.invalidate();
             }
         }
         invalidate();
@@ -572,14 +582,14 @@ public class MyLocationView extends View {
                 SensorManager.getRotationMatrixFromVector(matrix, event.values);
                 SensorManager.getOrientation(matrix, orientation);
 
-                float magneticHeading = (float) Math.toDegrees(SensorManager.getOrientation(matrix, orientation)[0]);
+                magneticHeading = (float) Math.toDegrees(SensorManager.getOrientation(matrix, orientation)[0]);
                 if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
                     // Change the user location view orientation to reflect the device orientation
                     rotateCamera(magneticHeading);
                     setCompass(0);
                 } else {
                     // Change compass direction
-                    setCompass(magneticHeading);
+                    setCompass(magneticHeading - bearing);
                 }
 
                 compassUpdateNextTimestamp = currentTime + COMPASS_UPDATE_RATE_MS;
@@ -730,11 +740,6 @@ public class MyLocationView extends View {
             // update LatLng location
             LatLng newLocation = new LatLng(location);
 
-            // update LatLng direction
-            if (myBearingTrackingMode == MyBearingTracking.GPS && location.hasBearing()) {
-                setCompass(location.getBearing() + bearing);
-            }
-
             // update LatLng accuracy
             updateAccuracy(location);