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[ios] Add camera limit debug option to iosapp

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Adapted from cdff47276d/Examples/ObjectiveC/BlockingGesturesDelegateExample.m
This commit is contained in:
Jason Wray
2018-03-08 14:52:43 -05:00
parent d37edadacb
commit 4acd671a65
1 changed files with 42 additions and 1 deletions
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43
platform/ios/app/MBXViewController.m
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@@ -18,6 +18,11 @@ static const CLLocationCoordinate2D WorldTourDestinations[] = {
{ .latitude = -13.15589555, .longitude = -74.2178961777998 },
};
static const MGLCoordinateBounds colorado = {
.sw = { .latitude = 36.986207, .longitude = -109.049896},
.ne = { .latitude = 40.989329, .longitude = -102.062592},
};
static NSString * const MBXViewControllerAnnotationViewReuseIdentifer = @"MBXViewControllerAnnotationViewReuseIdentifer";
typedef NS_ENUM(NSInteger, MBXSettingsSections) {
@@ -86,6 +91,7 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
MBXSettingsMiscellaneousToggleTwoMaps,
MBXSettingsMiscellaneousCountryLabels,
MBXSettingsMiscellaneousShowSnapshots,
MBXSettingsMiscellaneousShouldLimitCameraChanges,
MBXSettingsMiscellaneousPrintLogFile,
MBXSettingsMiscellaneousDeleteLogFile,
};
@@ -124,6 +130,7 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
@property (nonatomic) BOOL usingLocaleBasedCountryLabels;
@property (nonatomic) BOOL reuseQueueStatsEnabled;
@property (nonatomic) BOOL showZoomLevelEnabled;
@property (nonatomic) BOOL shouldLimitCameraChanges;
@end
@@ -371,7 +378,8 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
@"Embedded Map View",
[NSString stringWithFormat:@"%@ Second Map", ([self.view viewWithTag:2] == nil ? @"Show" : @"Hide")],
[NSString stringWithFormat:@"Show Labels in %@", (_usingLocaleBasedCountryLabels ? @"Default Language" : [[NSLocale currentLocale] displayNameForKey:NSLocaleIdentifier value:[self bestLanguageForUser]])],
@"Show Snapshots"
@"Show Snapshots",
[NSString stringWithFormat:@"%@ Camera Changes", (_shouldLimitCameraChanges ? @"Unlimit" : @"Limit")],
]];
if (self.debugLoggingEnabled)
@@ -663,6 +671,14 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
[self performSegueWithIdentifier:@"ShowSnapshots" sender:nil];
break;
}
case MBXSettingsMiscellaneousShouldLimitCameraChanges:
{
self.shouldLimitCameraChanges = !self.shouldLimitCameraChanges;
if (self.shouldLimitCameraChanges) {
[self.mapView setCenterCoordinate:CLLocationCoordinate2DMake(39.748947, -104.995882) zoomLevel:10 direction:0 animated:NO];
}
break;
}
default:
NSAssert(NO, @"All miscellaneous setting rows should be implemented");
break;
@@ -1886,6 +1902,31 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
_usingLocaleBasedCountryLabels = [[self bestLanguageForUser] isEqualToString:@"en"];
}
- (BOOL)mapView:(MGLMapView *)mapView shouldChangeFromCamera:(MGLMapCamera *)oldCamera toCamera:(MGLMapCamera *)newCamera {
if (_shouldLimitCameraChanges) {
// Get the current camera to restore it after.
MGLMapCamera *currentCamera = mapView.camera;
// From the new camera obtain the center to test if it’s inside the boundaries.
CLLocationCoordinate2D newCameraCenter = newCamera.centerCoordinate;
// Set the map’s visible bounds to newCamera.
mapView.camera = newCamera;
MGLCoordinateBounds newVisibleCoordinates = mapView.visibleCoordinateBounds;
// Revert the camera.
mapView.camera = currentCamera;
// Test if the newCameraCenter and newVisibleCoordinates are inside Colorado.
BOOL inside = MGLCoordinateInCoordinateBounds(newCameraCenter, colorado);
BOOL intersects = MGLCoordinateInCoordinateBounds(newVisibleCoordinates.ne, colorado) && MGLCoordinateInCoordinateBounds(newVisibleCoordinates.sw, colorado);
return inside && intersects;
} else {
return YES;
}
}
- (void)mapViewRegionIsChanging:(MGLMapView *)mapView
{
[self updateHUD];