[ios] show/hide scale bar

mapbox · Apr 3, 2017 · e545cb5 · e545cb5
1 parent e28f976
commit e545cb5
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/platform/ios/src/MGLMapView.h b/platform/ios/src/MGLMapView.h
@@ -594,6 +594,14 @@ IB_DESIGNABLE
  */
 @property (nonatomic) CLLocationDirection direction;
 
+/**
+ Indicates whether the scale bar should become visible when a user interacts with
+ the map. The scale bar will fade out automatically when the interaction stops.
+ 
+ The default value for this property is `YES`.
+ */
+@property (nonatomic) BOOL showsScale;
+
 /**
  Changes the heading of the map and optionally animates the change.
 

diff --git a/platform/ios/src/MGLMapView.mm b/platform/ios/src/MGLMapView.mm
@@ -506,7 +506,8 @@ - (void)commonInit
     _scaleBarView.translatesAutoresizingMaskIntoConstraints = NO;
     [self addSubview:_scaleBarView];
     _scaleControlViewConstraints = [NSMutableArray array];
-
+    _showsScale = YES;
+
     // setup interaction
     //
     _pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
@@ -4804,7 +4805,10 @@ - (void)cameraIsChanging {
     }
 
     [self updateCompass];
-    self.scaleBarView.metersPerPoint = [self metersPerPointAtLatitude:self.centerCoordinate.latitude];
+
+    if (self.showsScale) {
+        self.scaleBarView.metersPerPoint = [self metersPerPointAtLatitude:self.centerCoordinate.latitude];
+    }
 
     if ([self.delegate respondsToSelector:@selector(mapViewRegionIsChanging:)])
     {