11d99bd890
Renamed MGLCalloutView to MGLCompactCalloutView and MGLCalloutViewProtocol to MGLCalloutView to avoid an awkward workaround for a Swift name collision. Replaced individual title and subtitle properties with a single representedObject property that lets you use custom annotation properties in the custom callout view. Overrode a problematic SMCalloutView method. Added lots more documentation.
615 lines
24 KiB
Plaintext
615 lines
24 KiB
Plaintext
#import "MBXViewController.h"
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#import "MBXCustomCalloutView.h"
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#import <mbgl/ios/Mapbox.h>
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#import <mbgl/util/default_styles.hpp>
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#import <CoreLocation/CoreLocation.h>
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#import <OpenGLES/ES2/gl.h>
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static UIColor *const kTintColor = [UIColor colorWithRed:0.120 green:0.550 blue:0.670 alpha:1.000];
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static NSString * const kCustomCalloutTitle = @"Custom Callout";
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static const CLLocationCoordinate2D WorldTourDestinations[] = {
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{ 38.9131982, -77.0325453144239 },
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{ 37.7757368, -122.4135302 },
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{ 12.9810816, 77.6368034 },
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{ -13.15589555, -74.2178961777998 },
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};
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@interface MBXViewController () <UIActionSheetDelegate, MGLMapViewDelegate>
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@property (nonatomic) MGLMapView *mapView;
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@property (nonatomic) NSUInteger styleIndex;
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@end
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@implementation MBXViewController
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{
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BOOL _isTouringWorld;
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BOOL _isShowingCustomStyleLayer;
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}
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#pragma mark - Setup
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+ (void)initialize
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{
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if (self == [MBXViewController class])
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{
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[[NSUserDefaults standardUserDefaults] registerDefaults:@{
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@"MBXUserTrackingMode": @(MGLUserTrackingModeNone),
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@"MBXShowsUserLocation": @NO,
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@"MBXDebug": @NO,
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}];
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}
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}
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- (id)init
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{
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self = [super init];
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if (self)
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{
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(saveState:) name:UIApplicationDidEnterBackgroundNotification object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(restoreState:) name:UIApplicationWillEnterForegroundNotification object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(saveState:) name:UIApplicationWillTerminateNotification object:nil];
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}
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return self;
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}
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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self.mapView = [[MGLMapView alloc] initWithFrame:self.view.bounds];
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self.mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
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self.mapView.delegate = self;
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[self.view addSubview:self.mapView];
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self.view.tintColor = kTintColor;
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self.navigationController.navigationBar.tintColor = kTintColor;
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self.mapView.tintColor = kTintColor;
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self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"settings.png"]
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style:UIBarButtonItemStylePlain
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target:self
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action:@selector(showSettings)];
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self.styleIndex = 0;
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UIButton *titleButton = [UIButton buttonWithType:UIButtonTypeCustom];
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[titleButton setFrame:CGRectMake(0, 0, 150, 40)];
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[titleButton setTitle:@(mbgl::util::default_styles::orderedStyles[self.styleIndex].name) forState:UIControlStateNormal];
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[titleButton setTitleColor:kTintColor forState:UIControlStateNormal];
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[titleButton addTarget:self action:@selector(cycleStyles) forControlEvents:UIControlEventTouchUpInside];
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self.navigationItem.titleView = titleButton;
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self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"TrackingLocationOffMask.png"]
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style:UIBarButtonItemStylePlain
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target:self
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action:@selector(locateUser)];
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[self.mapView addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)]];
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[self restoreState:nil];
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}
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- (void)saveState:(__unused NSNotification *)notification
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{
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if (self.mapView)
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{
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NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
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NSData *archivedCamera = [NSKeyedArchiver archivedDataWithRootObject:self.mapView.camera];
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[defaults setObject:archivedCamera forKey:@"MBXCamera"];
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[defaults setInteger:self.mapView.userTrackingMode forKey:@"MBXUserTrackingMode"];
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[defaults setBool:self.mapView.showsUserLocation forKey:@"MBXShowsUserLocation"];
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[defaults setBool:self.mapView.debugActive forKey:@"MBXDebug"];
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[defaults synchronize];
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}
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}
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- (void)restoreState:(__unused NSNotification *)notification
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{
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if (self.mapView) {
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NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
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NSData *archivedCamera = [defaults objectForKey:@"MBXCamera"];
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MGLMapCamera *camera = archivedCamera ? [NSKeyedUnarchiver unarchiveObjectWithData:archivedCamera] : nil;
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if (camera)
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{
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self.mapView.camera = camera;
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}
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NSInteger uncheckedTrackingMode = [defaults integerForKey:@"MBXUserTrackingMode"];
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if (uncheckedTrackingMode >= 0 &&
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(NSUInteger)uncheckedTrackingMode >= MGLUserTrackingModeNone &&
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(NSUInteger)uncheckedTrackingMode <= MGLUserTrackingModeFollowWithCourse)
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{
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self.mapView.userTrackingMode = (MGLUserTrackingMode)uncheckedTrackingMode;
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}
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self.mapView.showsUserLocation = [defaults boolForKey:@"MBXShowsUserLocation"];
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self.mapView.debugActive = [defaults boolForKey:@"MBXDebug"];
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}
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}
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- (NSUInteger)supportedInterfaceOrientations
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{
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return UIInterfaceOrientationMaskAll;
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}
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#pragma mark - Actions
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- (void)showSettings
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{
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UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"Map Settings"
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delegate:self
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cancelButtonTitle:@"Cancel"
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destructiveButtonTitle:nil
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otherButtonTitles:@"Reset North",
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@"Reset Position",
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@"Cycle debug options",
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@"Empty Memory",
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@"Add 100 Points",
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@"Add 1,000 Points",
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@"Add 10,000 Points",
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@"Add Test Shapes",
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@"Start World Tour",
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@"Add Custom Callout Point",
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@"Remove Annotations",
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@"Toggle Custom Style Layer",
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nil];
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[sheet showFromBarButtonItem:self.navigationItem.leftBarButtonItem animated:YES];
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}
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- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
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{
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if (buttonIndex == actionSheet.firstOtherButtonIndex)
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{
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[self.mapView resetNorth];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 1)
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{
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[self.mapView resetPosition];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 2)
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{
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[self.mapView cycleDebugOptions];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 3)
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{
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[self.mapView emptyMemoryCache];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 4)
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{
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[self parseFeaturesAddingCount:100];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 5)
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{
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[self parseFeaturesAddingCount:1000];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 6)
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{
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[self parseFeaturesAddingCount:10000];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 7)
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{
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// PNW triangle
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//
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CLLocationCoordinate2D triangleCoordinates[3] =
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{
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CLLocationCoordinate2DMake(44, -122),
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CLLocationCoordinate2DMake(46, -122),
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CLLocationCoordinate2DMake(46, -121)
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};
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MGLPolygon *triangle = [MGLPolygon polygonWithCoordinates:triangleCoordinates count:3];
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[self.mapView addAnnotation:triangle];
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// Orcas Island hike
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//
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NSDictionary *hike = [NSJSONSerialization JSONObjectWithData:
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[NSData dataWithContentsOfFile:
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[[NSBundle mainBundle] pathForResource:@"polyline" ofType:@"geojson"]]
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options:0
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error:nil];
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NSArray *hikeCoordinatePairs = hike[@"features"][0][@"geometry"][@"coordinates"];
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CLLocationCoordinate2D *polylineCoordinates = (CLLocationCoordinate2D *)malloc([hikeCoordinatePairs count] * sizeof(CLLocationCoordinate2D));
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for (NSUInteger i = 0; i < [hikeCoordinatePairs count]; i++)
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{
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polylineCoordinates[i] = CLLocationCoordinate2DMake([hikeCoordinatePairs[i][1] doubleValue], [hikeCoordinatePairs[i][0] doubleValue]);
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}
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MGLPolyline *polyline = [MGLPolyline polylineWithCoordinates:polylineCoordinates
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count:[hikeCoordinatePairs count]];
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[self.mapView addAnnotation:polyline];
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free(polylineCoordinates);
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// PA/NJ/DE polys
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//
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NSDictionary *threestates = [NSJSONSerialization JSONObjectWithData:
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[NSData dataWithContentsOfFile:
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[[NSBundle mainBundle] pathForResource:@"threestates" ofType:@"geojson"]]
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options:0
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error:nil];
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for (NSDictionary *feature in threestates[@"features"])
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{
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NSArray *stateCoordinatePairs = feature[@"geometry"][@"coordinates"];
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while ([stateCoordinatePairs count] == 1) stateCoordinatePairs = stateCoordinatePairs[0];
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CLLocationCoordinate2D *polygonCoordinates = (CLLocationCoordinate2D *)malloc([stateCoordinatePairs count] * sizeof(CLLocationCoordinate2D));
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for (NSUInteger i = 0; i < [stateCoordinatePairs count]; i++)
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{
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polygonCoordinates[i] = CLLocationCoordinate2DMake([stateCoordinatePairs[i][1] doubleValue], [stateCoordinatePairs[i][0] doubleValue]);
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}
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MGLPolygon *polygon = [MGLPolygon polygonWithCoordinates:polygonCoordinates count:[stateCoordinatePairs count]];
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[self.mapView addAnnotation:polygon];
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free(polygonCoordinates);
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}
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 8)
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{
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[self startWorldTour:actionSheet];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 9)
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{
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[self presentAnnotationWithCustomCallout];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 10)
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{
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[self.mapView removeAnnotations:self.mapView.annotations];
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}
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else if (buttonIndex == actionSheet.firstOtherButtonIndex + 11)
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{
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if (_isShowingCustomStyleLayer)
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{
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[self removeCustomStyleLayer];
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}
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else
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{
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[self insertCustomStyleLayer];
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}
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}
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}
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- (void)parseFeaturesAddingCount:(NSUInteger)featuresCount
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{
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[self.mapView removeAnnotations:self.mapView.annotations];
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^
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{
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NSData *featuresData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"points" ofType:@"geojson"]];
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id features = [NSJSONSerialization JSONObjectWithData:featuresData
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options:0
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error:nil];
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if ([features isKindOfClass:[NSDictionary class]])
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{
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NSMutableArray *annotations = [NSMutableArray array];
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for (NSDictionary *feature in features[@"features"])
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{
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CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake([feature[@"geometry"][@"coordinates"][1] doubleValue],
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[feature[@"geometry"][@"coordinates"][0] doubleValue]);
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NSString *title = feature[@"properties"][@"NAME"];
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MGLPointAnnotation *annotation = [MGLPointAnnotation new];
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annotation.coordinate = coordinate;
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annotation.title = title;
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[annotations addObject:annotation];
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if (annotations.count == featuresCount) break;
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}
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dispatch_async(dispatch_get_main_queue(), ^
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{
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[self.mapView addAnnotations:annotations];
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[self.mapView showAnnotations:annotations animated:YES];
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});
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}
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});
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}
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- (void)insertCustomStyleLayer
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{
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_isShowingCustomStyleLayer = YES;
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static const GLchar *vertexShaderSource = "attribute vec2 a_pos; void main() { gl_Position = vec4(a_pos, 0, 1); }";
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static const GLchar *fragmentShaderSource = "void main() { gl_FragColor = vec4(0, 1, 0, 1); }";
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__block GLuint program = 0;
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__block GLuint vertexShader = 0;
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__block GLuint fragmentShader = 0;
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__block GLuint buffer = 0;
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__block GLuint a_pos = 0;
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[self.mapView insertCustomStyleLayerWithIdentifier:@"mbx-custom" preparationHandler:^{
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program = glCreateProgram();
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vertexShader = glCreateShader(GL_VERTEX_SHADER);
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fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
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glShaderSource(vertexShader, 1, &vertexShaderSource, nullptr);
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glCompileShader(vertexShader);
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glAttachShader(program, vertexShader);
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glShaderSource(fragmentShader, 1, &fragmentShaderSource, nullptr);
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glCompileShader(fragmentShader);
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glAttachShader(program, fragmentShader);
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glLinkProgram(program);
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a_pos = glGetAttribLocation(program, "a_pos");
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GLfloat background[] = { -1,-1, 1,-1, -1,1, 1,1 };
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glGenBuffers(1, &buffer);
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glBindBuffer(GL_ARRAY_BUFFER, buffer);
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glBufferData(GL_ARRAY_BUFFER, 8 * sizeof(GLfloat), background, GL_STATIC_DRAW);
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} drawingHandler:^(__unused CGSize size,
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__unused CLLocationCoordinate2D centerCoordinate,
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__unused double zoomLevel,
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__unused CLLocationDirection direction,
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__unused CGFloat pitch,
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__unused CGFloat perspectiveSkew) {
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glUseProgram(program);
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glBindBuffer(GL_ARRAY_BUFFER, buffer);
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glEnableVertexAttribArray(a_pos);
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glVertexAttribPointer(a_pos, 2, GL_FLOAT, GL_FALSE, 0, NULL);
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glDisable(GL_STENCIL_TEST);
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glDisable(GL_DEPTH_TEST);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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} completionHandler:^{
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if (program) {
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glDeleteBuffers(1, &buffer);
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glDetachShader(program, vertexShader);
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glDetachShader(program, fragmentShader);
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glDeleteShader(vertexShader);
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glDeleteShader(fragmentShader);
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glDeleteProgram(program);
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}
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} belowStyleLayerWithIdentifier:@"housenum-label"];
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}
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- (void)removeCustomStyleLayer
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{
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_isShowingCustomStyleLayer = NO;
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[self.mapView removeCustomStyleLayerWithIdentifier:@"mbx-custom"];
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}
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- (void)presentAnnotationWithCustomCallout
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{
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[self.mapView removeAnnotations:self.mapView.annotations];
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MGLPointAnnotation *annotation = [MGLPointAnnotation new];
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annotation.coordinate = CLLocationCoordinate2DMake(48.8533940, 2.3775439);
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annotation.title = kCustomCalloutTitle;
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[self.mapView addAnnotation:annotation];
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[self.mapView showAnnotations:@[annotation] animated:YES];
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}
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- (void)handleLongPress:(UILongPressGestureRecognizer *)longPress
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{
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if (longPress.state == UIGestureRecognizerStateBegan)
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{
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MGLPointAnnotation *point = [MGLPointAnnotation new];
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point.coordinate = [self.mapView convertPoint:[longPress locationInView:longPress.view]
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toCoordinateFromView:self.mapView];
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point.title = @"Dropped Marker";
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point.subtitle = [NSString stringWithFormat:@"lat: %.3f, lon: %.3f", point.coordinate.latitude, point.coordinate.longitude];
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[self.mapView addAnnotation:point];
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[self.mapView selectAnnotation:point animated:YES];
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}
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}
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- (void)cycleStyles
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{
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UIButton *titleButton = (UIButton *)self.navigationItem.titleView;
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self.styleIndex = (self.styleIndex + 1) % mbgl::util::default_styles::numOrderedStyles;
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self.mapView.styleURL = [NSURL URLWithString:@(mbgl::util::default_styles::orderedStyles[self.styleIndex].url)];
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[titleButton setTitle:@(mbgl::util::default_styles::orderedStyles[self.styleIndex].name) forState:UIControlStateNormal];
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}
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- (void)locateUser
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{
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MGLUserTrackingMode nextMode;
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switch (self.mapView.userTrackingMode) {
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case MGLUserTrackingModeNone:
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nextMode = MGLUserTrackingModeFollow;
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break;
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case MGLUserTrackingModeFollow:
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nextMode = MGLUserTrackingModeFollowWithHeading;
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break;
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case MGLUserTrackingModeFollowWithHeading:
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nextMode = MGLUserTrackingModeFollowWithCourse;
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break;
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case MGLUserTrackingModeFollowWithCourse:
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nextMode = MGLUserTrackingModeNone;
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break;
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}
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self.mapView.userTrackingMode = nextMode;
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}
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- (IBAction)startWorldTour:(__unused id)sender
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{
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_isTouringWorld = YES;
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[self.mapView removeAnnotations:self.mapView.annotations];
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NSUInteger numberOfAnnotations = sizeof(WorldTourDestinations) / sizeof(WorldTourDestinations[0]);
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NSMutableArray *annotations = [NSMutableArray arrayWithCapacity:numberOfAnnotations];
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for (NSUInteger i = 0; i < numberOfAnnotations; i++)
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{
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MGLPointAnnotation *annotation = [[MGLPointAnnotation alloc] init];
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annotation.coordinate = WorldTourDestinations[i];
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[annotations addObject:annotation];
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}
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[self.mapView addAnnotations:annotations];
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[self continueWorldTourWithRemainingAnnotations:annotations];
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}
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- (void)continueWorldTourWithRemainingAnnotations:(NS_MUTABLE_ARRAY_OF(MGLPointAnnotation *) *)annotations
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{
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MGLPointAnnotation *nextAnnotation = annotations.firstObject;
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if (!nextAnnotation || !_isTouringWorld)
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{
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_isTouringWorld = NO;
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return;
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}
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[annotations removeObjectAtIndex:0];
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MGLMapCamera *camera = [MGLMapCamera cameraLookingAtCenterCoordinate:nextAnnotation.coordinate
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fromDistance:10
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pitch:arc4random_uniform(60)
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heading:arc4random_uniform(360)];
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__weak MBXViewController *weakSelf = self;
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[self.mapView flyToCamera:camera completionHandler:^{
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MBXViewController *strongSelf = weakSelf;
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[strongSelf performSelector:@selector(continueWorldTourWithRemainingAnnotations:)
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withObject:annotations
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afterDelay:2];
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}];
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}
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#pragma mark - Destruction
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- (void)dealloc
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{
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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[self saveState:nil];
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}
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#pragma mark - MGLMapViewDelegate
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- (MGLAnnotationImage *)mapView:(MGLMapView * __nonnull)mapView imageForAnnotation:(id <MGLAnnotation> __nonnull)annotation
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{
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if ([annotation.title isEqualToString:@"Dropped Marker"]
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|| [annotation.title isEqualToString:kCustomCalloutTitle])
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{
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return nil; // use default marker
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}
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NSString *title = [(MGLPointAnnotation *)annotation title];
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if (!title.length) return nil;
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NSString *lastTwoCharacters = [title substringFromIndex:title.length - 2];
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UIColor *color;
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// make every tenth annotation blue
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if ([lastTwoCharacters hasSuffix:@"0"]) {
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color = [UIColor blueColor];
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} else {
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color = [UIColor redColor];
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}
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MGLAnnotationImage *image = [mapView dequeueReusableAnnotationImageWithIdentifier:lastTwoCharacters];
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if ( ! image)
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{
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CGRect rect = CGRectMake(0, 0, 20, 15);
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UIGraphicsBeginImageContextWithOptions(rect.size, NO, [[UIScreen mainScreen] scale]);
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CGContextRef ctx = UIGraphicsGetCurrentContext();
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CGContextSetFillColorWithColor(ctx, [[color colorWithAlphaComponent:0.75] CGColor]);
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CGContextFillRect(ctx, rect);
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CGContextSetStrokeColorWithColor(ctx, [[UIColor blackColor] CGColor]);
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CGContextStrokeRectWithWidth(ctx, rect, 2);
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NSAttributedString *drawString = [[NSAttributedString alloc] initWithString:lastTwoCharacters attributes:@{
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NSFontAttributeName: [UIFont fontWithName:@"Arial-BoldMT" size:12],
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NSForegroundColorAttributeName: [UIColor whiteColor] }];
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CGSize stringSize = drawString.size;
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CGRect stringRect = CGRectMake((rect.size.width - stringSize.width) / 2,
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(rect.size.height - stringSize.height) / 2,
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stringSize.width,
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stringSize.height);
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[drawString drawInRect:stringRect];
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image = [MGLAnnotationImage annotationImageWithImage:UIGraphicsGetImageFromCurrentImageContext() reuseIdentifier:lastTwoCharacters];
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// don't allow touches on blue annotations
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if ([color isEqual:[UIColor blueColor]]) image.enabled = NO;
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UIGraphicsEndImageContext();
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}
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return image;
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}
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- (BOOL)mapView:(__unused MGLMapView *)mapView annotationCanShowCallout:(__unused id <MGLAnnotation>)annotation
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{
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return YES;
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}
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- (CGFloat)mapView:(__unused MGLMapView *)mapView alphaForShapeAnnotation:(MGLShape *)annotation
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{
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return ([annotation isKindOfClass:[MGLPolygon class]] ? 0.5 : 1.0);
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}
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- (UIColor *)mapView:(__unused MGLMapView *)mapView strokeColorForShapeAnnotation:(MGLShape *)annotation
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{
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return ([annotation isKindOfClass:[MGLPolyline class]] ? [UIColor purpleColor] : [UIColor blackColor]);
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}
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- (UIColor *)mapView:(__unused MGLMapView *)mapView fillColorForPolygonAnnotation:(__unused MGLPolygon *)annotation
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{
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return (annotation.pointCount > 3 ? [UIColor greenColor] : [UIColor redColor]);
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}
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- (void)mapView:(__unused MGLMapView *)mapView didChangeUserTrackingMode:(MGLUserTrackingMode)mode animated:(__unused BOOL)animated
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{
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UIImage *newButtonImage;
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NSString *newButtonTitle;
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switch (mode) {
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case MGLUserTrackingModeNone:
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newButtonImage = [UIImage imageNamed:@"TrackingLocationOffMask.png"];
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break;
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case MGLUserTrackingModeFollow:
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newButtonImage = [UIImage imageNamed:@"TrackingLocationMask.png"];
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break;
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case MGLUserTrackingModeFollowWithHeading:
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newButtonImage = [UIImage imageNamed:@"TrackingHeadingMask.png"];
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break;
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case MGLUserTrackingModeFollowWithCourse:
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newButtonImage = nil;
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newButtonTitle = @"Course";
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break;
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}
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self.navigationItem.rightBarButtonItem.title = newButtonTitle;
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[UIView animateWithDuration:0.25 animations:^{
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self.navigationItem.rightBarButtonItem.image = newButtonImage;
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}];
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}
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- (UIView<MGLCalloutView> *)mapView:(__unused MGLMapView *)mapView calloutViewForAnnotation:(id<MGLAnnotation>)annotation
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{
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if ([annotation respondsToSelector:@selector(title)]
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&& [annotation.title isEqualToString:kCustomCalloutTitle])
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{
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MBXCustomCalloutView *calloutView = [[MBXCustomCalloutView alloc] init];
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calloutView.representedObject = annotation;
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return calloutView;
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}
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return nil;
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}
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@end
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