[iOS] Enable developers to change position of ornaments (#13911)

* APIs for change position of ornaments

* Use anchors APIs and emove iOS8 layout code

* Add ornaments layout tests

3 files changed, 109 insertions, 1 deletions

diff --git a/platform/ios/app/MBXOrnamentsViewController.h b/platform/ios/app/MBXOrnamentsViewController.h
new file mode 100644
index 0000000000..087101cdc0
--- /dev/null
+++ b/platform/ios/app/MBXOrnamentsViewController.h
@@ -0,0 +1,5 @@
+#import <UIKit/UIKit.h>
+
+@interface MBXOrnamentsViewController : UIViewController
+
+@end
diff --git a/platform/ios/app/MBXOrnamentsViewController.m b/platform/ios/app/MBXOrnamentsViewController.m
new file mode 100644
index 0000000000..5c7aac7f88
--- /dev/null
+++ b/platform/ios/app/MBXOrnamentsViewController.m
@@ -0,0 +1,94 @@
+#import "MBXOrnamentsViewController.h"
+
+@import Mapbox;
+
+@interface MBXOrnamentsViewController ()<MGLMapViewDelegate>
+
+@property (nonatomic) MGLMapView *mapView;
+@property (nonatomic) NSTimer *timer;
+@property (nonatomic) NSInteger currentPositionIndex;
+
+@end
+
+@implementation MBXOrnamentsViewController
+
+- (void)setCurrentPositionIndex:(NSInteger)currentPositionIndex {
+    MGLOrnamentPosition ornamentPositions[5][4] = {
+        {
+            MGLOrnamentPositionTopLeft,
+            MGLOrnamentPositionTopRight,
+            MGLOrnamentPositionBottomRight,
+            MGLOrnamentPositionBottomLeft
+        },
+        {
+            MGLOrnamentPositionTopRight,
+            MGLOrnamentPositionBottomRight,
+            MGLOrnamentPositionBottomLeft,
+            MGLOrnamentPositionTopLeft
+        },
+        {
+            MGLOrnamentPositionBottomRight,
+            MGLOrnamentPositionBottomLeft,
+            MGLOrnamentPositionTopLeft,
+            MGLOrnamentPositionTopRight
+        },
+        {
+            MGLOrnamentPositionBottomLeft,
+            MGLOrnamentPositionTopLeft,
+            MGLOrnamentPositionTopRight,
+            MGLOrnamentPositionBottomRight
+        },
+        {
+            MGLOrnamentPositionTopLeft,
+            MGLOrnamentPositionTopRight,
+            MGLOrnamentPositionBottomRight,
+            MGLOrnamentPositionBottomLeft
+        }
+    };
+    MGLOrnamentPosition *currentPosition = ornamentPositions[currentPositionIndex];
+    self.mapView.scaleBarPosition = currentPosition[0];
+    self.mapView.compassViewPosition = currentPosition[1];
+    self.mapView.logoViewPosition = currentPosition[2];
+    self.mapView.attributionButtonPosition = currentPosition[3];
+    
+    _currentPositionIndex = currentPositionIndex;
+}
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    self.title = @"Ornaments";
+
+    MGLMapView *mapView = [[MGLMapView alloc] initWithFrame:self.view.bounds];
+    mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+    [mapView setCenterCoordinate:CLLocationCoordinate2DMake(39.915143, 116.404053)
+                       zoomLevel:16
+                       direction:30
+                        animated:NO];
+    mapView.delegate = self;
+    mapView.showsScale = YES;
+    [self.view addSubview:mapView];
+
+    self.mapView = mapView;
+}
+
+- (void)viewDidDisappear:(BOOL)animated {
+    [self.timer invalidate];
+    self.timer = nil;
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+    self.timer = [NSTimer scheduledTimerWithTimeInterval:1
+                                                  target:self
+                                                selector:@selector(onTimerTick)
+                                                userInfo:nil
+                                                 repeats:YES];
+}
+
+- (void)onTimerTick {
+    self.currentPositionIndex ++;
+    if (self.currentPositionIndex >= 4) {
+        self.currentPositionIndex = 0;
+    }
+}
+
+@end
diff --git a/platform/ios/app/MBXViewController.m b/platform/ios/app/MBXViewController.m
index b2c6ca26b3..9c506cadfa 100644
--- a/platform/ios/app/MBXViewController.m
+++ b/platform/ios/app/MBXViewController.m
@@ -7,6 +7,7 @@
 #import "MBXUserLocationAnnotationView.h"
 #import "LimeGreenStyleLayer.h"
 #import "MBXEmbeddedMapViewController.h"
+#import "MBXOrnamentsViewController.h"
 
 #import "MBXFrameTimeGraphView.h"
 
@@ -104,8 +105,9 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
     MBXSettingsMiscellaneousShowSnapshots,
     MBXSettingsMiscellaneousShouldLimitCameraChanges,
     MBXSettingsMiscellaneousShowCustomLocationManager,
+    MBXSettingsMiscellaneousOrnamentsPlacement,
     MBXSettingsMiscellaneousPrintLogFile,
-    MBXSettingsMiscellaneousDeleteLogFile,
+    MBXSettingsMiscellaneousDeleteLogFile
 };
 
 // Utility methods
@@ -499,6 +501,7 @@ CLLocationCoordinate2D randomWorldCoordinate() {
                 @"Show Snapshots",
                 [NSString stringWithFormat:@"%@ Camera Changes", (_shouldLimitCameraChanges ? @"Unlimit" : @"Limit")],
                 @"View Route Simulation",
+                @"Ornaments Placement",
             ]];
 
             if (self.debugLoggingEnabled)
@@ -756,6 +759,12 @@ CLLocationCoordinate2D randomWorldCoordinate() {
                     }
                     break;
                 }
+                case MBXSettingsMiscellaneousOrnamentsPlacement:
+                {
+                    MBXOrnamentsViewController *ornamentsViewController = [[MBXOrnamentsViewController alloc] init];
+                    [self.navigationController pushViewController:ornamentsViewController animated:YES];
+                    break;
+                }
                 default:
                     NSAssert(NO, @"All miscellaneous setting rows should be implemented");
                     break;