From 56cd67407701ecce010a3d0af75a2c8d5bdb5a2c Mon Sep 17 00:00:00 2001
From: Jason Wray <jason@kulturny.com>
Date: Wed, 8 Apr 2015 23:44:57 -0700
Subject: [PATCH] Add simple tracking mode button to demo app

---
 ios/app/MBXViewController.mm               |  23 ++++++++++++++++++++-
 ios/app/img/TrackingHeadingMask.png        | Bin 0 -> 250 bytes
 ios/app/img/TrackingHeadingMask@2x.png     | Bin 0 -> 467 bytes
 ios/app/img/TrackingHeadingMask@3x.png     | Bin 0 -> 672 bytes
 ios/app/img/TrackingLocationMask.png       | Bin 0 -> 407 bytes
 ios/app/img/TrackingLocationMask@2x.png    | Bin 0 -> 680 bytes
 ios/app/img/TrackingLocationMask@3x.png    | Bin 0 -> 903 bytes
 ios/app/img/TrackingLocationOffMask.png    | Bin 0 -> 493 bytes
 ios/app/img/TrackingLocationOffMask@2x.png | Bin 0 -> 973 bytes
 ios/app/img/TrackingLocationOffMask@3x.png | Bin 0 -> 1407 bytes
 ios/app/img/locateUser.png                 | Bin 1111 -> 0 bytes
 ios/app/img/locateUser@2x.png              | Bin 1696 -> 0 bytes
 ios/app/img/locateUser@3x.png              | Bin 521 -> 0 bytes
 13 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 ios/app/img/TrackingHeadingMask.png
 create mode 100644 ios/app/img/TrackingHeadingMask@2x.png
 create mode 100644 ios/app/img/TrackingHeadingMask@3x.png
 create mode 100644 ios/app/img/TrackingLocationMask.png
 create mode 100644 ios/app/img/TrackingLocationMask@2x.png
 create mode 100644 ios/app/img/TrackingLocationMask@3x.png
 create mode 100644 ios/app/img/TrackingLocationOffMask.png
 create mode 100644 ios/app/img/TrackingLocationOffMask@2x.png
 create mode 100644 ios/app/img/TrackingLocationOffMask@3x.png
 delete mode 100644 ios/app/img/locateUser.png
 delete mode 100644 ios/app/img/locateUser@2x.png
 delete mode 100644 ios/app/img/locateUser@3x.png

diff --git a/ios/app/MBXViewController.mm b/ios/app/MBXViewController.mm
index 28ac68589..fc7ad3cb5 100644
--- a/ios/app/MBXViewController.mm
+++ b/ios/app/MBXViewController.mm
@@ -85,7 +85,7 @@ mbgl::Settings_NSUserDefaults *settings = nullptr;
     [titleButton addTarget:self action:@selector(cycleStyles) forControlEvents:UIControlEventTouchUpInside];
     self.navigationItem.titleView = titleButton;
 
-    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"locateUser.png"]
+    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"TrackingLocationOffMask.png"]
                                                                               style:UIBarButtonItemStylePlain
                                                                              target:self
                                                                              action:@selector(locateUser)];
@@ -290,6 +290,27 @@ mbgl::Settings_NSUserDefaults *settings = nullptr;
     return YES;
 }
 
+- (void)mapView:(MGLMapView *)mapView didChangeUserTrackingMode:(MGLUserTrackingMode)mode animated:(BOOL)animated
+{
+    UIImage *newButtonImage;
+    
+    switch (mode) {
+        case MGLUserTrackingModeNone:
+            newButtonImage = [UIImage imageNamed:@"TrackingLocationOffMask.png"];
+            break;
+            
+        case MGLUserTrackingModeFollow:
+            newButtonImage = [UIImage imageNamed:@"TrackingLocationMask.png"];
+            break;
+            
+        case MGLUserTrackingModeFollowWithHeading:
+            newButtonImage = [UIImage imageNamed:@"TrackingHeadingMask.png"];
+            break;
+    }
+    
+    self.navigationItem.rightBarButtonItem.image = newButtonImage;
+}
+
 #pragma clang diagnostic pop
 
 @end
diff --git a/ios/app/img/TrackingHeadingMask.png b/ios/app/img/TrackingHeadingMask.png
new file mode 100644
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