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MGLMapView.mm
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MGLMapView.mm
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#import "MGLMapView.h"
#import "MGLMapView+IBAdditions.h"
#import "MGLMapView+MGLCustomStyleLayerAdditions.h"
#import <mbgl/platform/log.hpp>
#import <mbgl/platform/gl.hpp>
#import <GLKit/GLKit.h>
#import <OpenGLES/EAGL.h>
#include <mbgl/mbgl.hpp>
#include <mbgl/annotation/point_annotation.hpp>
#include <mbgl/annotation/shape_annotation.hpp>
#include <mbgl/sprite/sprite_image.hpp>
#include <mbgl/map/camera.hpp>
#include <mbgl/map/mode.hpp>
#include <mbgl/platform/platform.hpp>
#include <mbgl/platform/darwin/reachability.h>
#include <mbgl/storage/default_file_source.hpp>
#include <mbgl/storage/network_status.hpp>
#include <mbgl/util/geo.hpp>
#include <mbgl/util/math.hpp>
#include <mbgl/util/constants.hpp>
#include <mbgl/util/image.hpp>
#include <mbgl/util/projection.hpp>
#include <mbgl/util/std.hpp>
#include <mbgl/util/default_styles.hpp>
#include <mbgl/util/chrono.hpp>
#import "Mapbox.h"
#import "../../darwin/MGLGeometry_Private.h"
#import "../../darwin/MGLMultiPoint_Private.h"
#import "NSBundle+MGLAdditions.h"
#import "NSString+MGLAdditions.h"
#import "NSProcessInfo+MGLAdditions.h"
#import "NSException+MGLAdditions.h"
#import "MGLUserLocationAnnotationView.h"
#import "MGLUserLocation_Private.h"
#import "MGLAccountManager_Private.h"
#import "MGLAnnotationImage_Private.h"
#import "MGLMapboxEvents.h"
#import "MGLCompactCalloutView.h"
#import <algorithm>
#import <cstdlib>
#import <map>
#import <unordered_set>
class MBGLView;
class MGLAnnotationContext;
/// Indicates the manner in which the map view is tracking the user location.
typedef NS_ENUM(NSUInteger, MGLUserTrackingState) {
/// The map view is not yet tracking the user location.
MGLUserTrackingStatePossible = 0,
/// The map view has begun to move to the first reported user location.
MGLUserTrackingStateBegan,
/// The map view has finished moving to the first reported user location.
MGLUserTrackingStateChanged,
};
NSString *const MGLMapboxSetupDocumentationURLDisplayString = @"mapbox.com/help/first-steps-ios-sdk";
const NSTimeInterval MGLAnimationDuration = 0.3;
/// Duration of an animation due to a user location update, typically chosen to
/// match a typical interval between user location updates.
const NSTimeInterval MGLUserLocationAnimationDuration = 1.0;
/// Distance between the map view’s edge and that of the user location
/// annotation view.
const UIEdgeInsets MGLUserLocationAnnotationViewInset = UIEdgeInsetsMake(50, 0, 50, 0);
const CGSize MGLAnnotationUpdateViewportOutset = {150, 150};
const CGFloat MGLMinimumZoom = 3;
/// Minimum initial zoom level when entering user tracking mode.
const double MGLMinimumZoomLevelForUserTracking = 10.5;
/// Initial zoom level when entering user tracking mode from a low zoom level.
const double MGLDefaultZoomLevelForUserTracking = 14.0;
const NSUInteger MGLTargetFrameInterval = 1; //Target FPS will be 60 divided by this value
/// Tolerance for snapping to true north, measured in degrees in either direction.
const CLLocationDirection MGLToleranceForSnappingToNorth = 7;
/// Reuse identifier and file name of the default point annotation image.
static NSString * const MGLDefaultStyleMarkerSymbolName = @"default_marker";
/// Prefix that denotes a sprite installed by MGLMapView, to avoid collisions
/// with style-defined sprites.
NSString *const MGLAnnotationSpritePrefix = @"com.mapbox.sprites.";
/// Slop area around the hit testing point, allowing for imprecise annotation selection.
const CGFloat MGLAnnotationImagePaddingForHitTest = 5;
/// Distance from the callout’s anchor point to the annotation it points to.
const CGFloat MGLAnnotationImagePaddingForCallout = 1;
/// Unique identifier representing a single annotation in mbgl.
typedef uint32_t MGLAnnotationTag;
/// An indication that the requested annotation was not found or is nonexistent.
enum { MGLAnnotationTagNotFound = UINT32_MAX };
/// Mapping from an annotation tag to metadata about that annotation, including
/// the annotation itself.
typedef std::map<MGLAnnotationTag, MGLAnnotationContext> MGLAnnotationContextMap;
mbgl::util::UnitBezier MGLUnitBezierForMediaTimingFunction(CAMediaTimingFunction *function)
{
if ( ! function)
{
function = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault];
}
float p1[2], p2[2];
[function getControlPointAtIndex:0 values:p1];
[function getControlPointAtIndex:1 values:p2];
return { p1[0], p1[1], p2[0], p2[1] };
}
mbgl::Color MGLColorObjectFromUIColor(UIColor *color)
{
if (!color)
{
return {{ 0, 0, 0, 0 }};
}
CGFloat r, g, b, a;
[color getRed:&r green:&g blue:&b alpha:&a];
return {{ (float)r, (float)g, (float)b, (float)a }};
}
/// Lightweight container for metadata about an annotation, including the annotation itself.
class MGLAnnotationContext {
public:
id <MGLAnnotation> annotation;
/// mbgl-given identifier for the annotation image used by this annotation.
/// Based on the annotation image’s reusable identifier.
NSString *symbolIdentifier;
};
#pragma mark - Private -
@interface MGLMapView () <UIGestureRecognizerDelegate,
GLKViewDelegate,
CLLocationManagerDelegate,
UIActionSheetDelegate,
MGLCalloutViewDelegate,
UIAlertViewDelegate,
MGLMultiPointDelegate,
MGLAnnotationImageDelegate>
@property (nonatomic) EAGLContext *context;
@property (nonatomic) GLKView *glView;
@property (nonatomic) UIImageView *glSnapshotView;
@property (nonatomic, readwrite) UIImageView *compassView;
@property (nonatomic, readwrite) UIImageView *logoView;
@property (nonatomic) NS_MUTABLE_ARRAY_OF(NSLayoutConstraint *) *logoViewConstraints;
@property (nonatomic, readwrite) UIButton *attributionButton;
@property (nonatomic) NS_MUTABLE_ARRAY_OF(NSLayoutConstraint *) *attributionButtonConstraints;
@property (nonatomic) UIActionSheet *attributionSheet;
@property (nonatomic) UIPanGestureRecognizer *pan;
@property (nonatomic) UIPinchGestureRecognizer *pinch;
@property (nonatomic) UIRotationGestureRecognizer *rotate;
@property (nonatomic) UILongPressGestureRecognizer *quickZoom;
@property (nonatomic) UIPanGestureRecognizer *twoFingerDrag;
/// Mapping from reusable identifiers to annotation images.
@property (nonatomic) NS_MUTABLE_DICTIONARY_OF(NSString *, MGLAnnotationImage *) *annotationImagesByIdentifier;
/// Currently shown popover representing the selected annotation.
@property (nonatomic) UIView<MGLCalloutView> *calloutViewForSelectedAnnotation;
@property (nonatomic) MGLUserLocationAnnotationView *userLocationAnnotationView;
/// Indicates how thoroughly the map view is tracking the user location.
@property (nonatomic) MGLUserTrackingState userTrackingState;
@property (nonatomic) CLLocationManager *locationManager;
@property (nonatomic) CGFloat scale;
@property (nonatomic) CGFloat angle;
@property (nonatomic) CGFloat quickZoomStart;
@property (nonatomic, getter=isDormant) BOOL dormant;
@property (nonatomic, readonly, getter=isRotationAllowed) BOOL rotationAllowed;
@end
@implementation MGLMapView
{
mbgl::Map *_mbglMap;
MBGLView *_mbglView;
mbgl::DefaultFileSource *_mbglFileSource;
BOOL _opaque;
NS_MUTABLE_ARRAY_OF(NSURL *) *_bundledStyleURLs;
MGLAnnotationContextMap _annotationContextsByAnnotationTag;
/// Tag of the selected annotation. If the user location annotation is selected, this ivar is set to `MGLAnnotationTagNotFound`.
MGLAnnotationTag _selectedAnnotationTag;
BOOL _userLocationAnnotationIsSelected;
/// Size of the rectangle formed by unioning the maximum slop area around every annotation image.
CGSize _unionedAnnotationImageSize;
std::vector<MGLAnnotationTag> _annotationsNearbyLastTap;
BOOL _isWaitingForRedundantReachableNotification;
BOOL _isTargetingInterfaceBuilder;
CLLocationDegrees _pendingLatitude;
CLLocationDegrees _pendingLongitude;
CADisplayLink *_displayLink;
BOOL _needsDisplayRefresh;
NSUInteger _changeDelimiterSuppressionDepth;
BOOL _delegateHasAlphasForShapeAnnotations;
BOOL _delegateHasStrokeColorsForShapeAnnotations;
BOOL _delegateHasFillColorsForShapeAnnotations;
BOOL _delegateHasLineWidthsForShapeAnnotations;
}
#pragma mark - Setup & Teardown -
@dynamic debugActive;
mbgl::Duration MGLDurationInSeconds(NSTimeInterval duration)
{
return std::chrono::duration_cast<mbgl::Duration>(std::chrono::duration<NSTimeInterval>(duration));
}
- (instancetype)initWithFrame:(CGRect)frame
{
if (self = [super initWithFrame:frame])
{
[self commonInit];
self.styleURL = nil;
}
return self;
}
- (instancetype)initWithFrame:(CGRect)frame styleURL:(nullable NSURL *)styleURL
{
if (self = [super initWithFrame:frame])
{
[self commonInit];
self.styleURL = styleURL;
}
return self;
}
- (instancetype)initWithCoder:(nonnull NSCoder *)decoder
{
if (self = [super initWithCoder:decoder])
{
[self commonInit];
self.styleURL = nil;
}
return self;
}
+ (NS_SET_OF(NSString *) *)keyPathsForValuesAffectingStyleURL
{
return [NSSet setWithObjects:@"styleURL__", nil];
}
- (nonnull NSURL *)styleURL
{
NSString *styleURLString = @(_mbglMap->getStyleURL().c_str()).mgl_stringOrNilIfEmpty;
NSAssert(styleURLString || _isTargetingInterfaceBuilder, @"Invalid style URL string %@", styleURLString);
return styleURLString ? [NSURL URLWithString:styleURLString] : nil;
}
- (void)setStyleURL:(nullable NSURL *)styleURL
{
if (_isTargetingInterfaceBuilder) return;
if ( ! styleURL)
{
styleURL = [MGLStyle streetsStyleURL];
}
if ( ! [styleURL scheme])
{
// Assume a relative path into the application bundle.
styleURL = [NSURL URLWithString:[@"asset://" stringByAppendingString:[styleURL absoluteString]]];
}
_mbglMap->setStyleURL([[styleURL absoluteString] UTF8String]);
}
- (void)commonInit
{
_isTargetingInterfaceBuilder = NSProcessInfo.processInfo.mgl_isInterfaceBuilderDesignablesAgent;
_opaque = YES;
BOOL background = [UIApplication sharedApplication].applicationState == UIApplicationStateBackground;
if (!background)
{
[self createGLView];
}
self.accessibilityLabel = @"Map";
self.backgroundColor = [UIColor clearColor];
self.clipsToBounds = YES;
// setup mbgl view
const float scaleFactor = [UIScreen instancesRespondToSelector:@selector(nativeScale)] ? [[UIScreen mainScreen] nativeScale] : [[UIScreen mainScreen] scale];
_mbglView = new MBGLView(self, scaleFactor);
// setup mbgl cache & file source
NSString *fileCachePath = @"";
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
if ([paths count] != 0) {
NSString *libraryDirectory = [paths objectAtIndex:0];
fileCachePath = [libraryDirectory stringByAppendingPathComponent:@"cache.db"];
}
_mbglFileSource = new mbgl::DefaultFileSource([fileCachePath UTF8String], [[[[NSBundle mainBundle] resourceURL] path] UTF8String]);
// setup mbgl map
_mbglMap = new mbgl::Map(*_mbglView, *_mbglFileSource, mbgl::MapMode::Continuous);
// start paused if in IB
if (_isTargetingInterfaceBuilder || background) {
self.dormant = YES;
_mbglMap->pause();
}
// Observe for changes to the global access token (and find out the current one).
[[MGLAccountManager sharedManager] addObserver:self
forKeyPath:@"accessToken"
options:(NSKeyValueObservingOptionInitial |
NSKeyValueObservingOptionNew)
context:NULL];
// Notify map object when network reachability status changes.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(reachabilityChanged:)
name:kMGLReachabilityChangedNotification
object:nil];
MGLReachability* reachability = [MGLReachability reachabilityForInternetConnection];
if ([reachability isReachable])
{
_isWaitingForRedundantReachableNotification = YES;
}
[reachability startNotifier];
// Set up annotation management and selection state.
_annotationImagesByIdentifier = [NSMutableDictionary dictionary];
_annotationContextsByAnnotationTag = {};
_selectedAnnotationTag = MGLAnnotationTagNotFound;
_annotationsNearbyLastTap = {};
// setup logo bug
//
UIImage *logo = [[MGLMapView resourceImageNamed:@"mapbox.png"] imageWithAlignmentRectInsets:UIEdgeInsetsMake(1.5, 4, 3.5, 2)];
_logoView = [[UIImageView alloc] initWithImage:logo];
_logoView.accessibilityLabel = @"Mapbox logo";
_logoView.translatesAutoresizingMaskIntoConstraints = NO;
[self addSubview:_logoView];
_logoViewConstraints = [NSMutableArray array];
// setup attribution
//
_attributionButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
_attributionButton.accessibilityLabel = @"Attribution info";
[_attributionButton addTarget:self action:@selector(showAttribution) forControlEvents:UIControlEventTouchUpInside];
_attributionButton.translatesAutoresizingMaskIntoConstraints = NO;
[self addSubview:_attributionButton];
_attributionButtonConstraints = [NSMutableArray array];
[_attributionButton addObserver:self forKeyPath:@"hidden" options:NSKeyValueObservingOptionNew context:NULL];
// setup compass
//
_compassView = [[UIImageView alloc] initWithImage:[MGLMapView resourceImageNamed:@"Compass.png"]];
_compassView.accessibilityLabel = @"Compass";
_compassView.frame = CGRectMake(0, 0, _compassView.image.size.width, _compassView.image.size.height);
_compassView.alpha = 0;
_compassView.userInteractionEnabled = YES;
[_compassView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleCompassTapGesture:)]];
UIView *container = [[UIView alloc] initWithFrame:CGRectZero];
[container addSubview:_compassView];
container.translatesAutoresizingMaskIntoConstraints = NO;
[self addSubview:container];
// setup interaction
//
_pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
_pan.delegate = self;
_pan.maximumNumberOfTouches = 1;
[self addGestureRecognizer:_pan];
_scrollEnabled = YES;
_pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinchGesture:)];
_pinch.delegate = self;
[self addGestureRecognizer:_pinch];
_zoomEnabled = YES;
_rotate = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(handleRotateGesture:)];
_rotate.delegate = self;
[self addGestureRecognizer:_rotate];
_rotateEnabled = YES;
UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTapGesture:)];
doubleTap.numberOfTapsRequired = 2;
[self addGestureRecognizer:doubleTap];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTapGesture:)];
[singleTap requireGestureRecognizerToFail:doubleTap];
[self addGestureRecognizer:singleTap];
UITapGestureRecognizer *twoFingerTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTwoFingerTapGesture:)];
twoFingerTap.numberOfTouchesRequired = 2;
[twoFingerTap requireGestureRecognizerToFail:_pinch];
[twoFingerTap requireGestureRecognizerToFail:_rotate];
[self addGestureRecognizer:twoFingerTap];
_twoFingerDrag = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handleTwoFingerDragGesture:)];
_twoFingerDrag.minimumNumberOfTouches = 2;
_twoFingerDrag.maximumNumberOfTouches = 2;
_twoFingerDrag.delegate = self;
[_twoFingerDrag requireGestureRecognizerToFail:twoFingerTap];
[_twoFingerDrag requireGestureRecognizerToFail:_pan];
[self addGestureRecognizer:_twoFingerDrag];
_pitchEnabled = YES;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)
{
_quickZoom = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleQuickZoomGesture:)];
_quickZoom.numberOfTapsRequired = 1;
_quickZoom.minimumPressDuration = 0;
[_quickZoom requireGestureRecognizerToFail:doubleTap];
[self addGestureRecognizer:_quickZoom];
}
// observe app activity
//
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willTerminate) name:UIApplicationWillTerminateNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sleepGL:) name:UIApplicationDidEnterBackgroundNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(wakeGL:) name:UIApplicationWillEnterForegroundNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(wakeGL:) name:UIApplicationDidBecomeActiveNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didReceiveMemoryWarning) name:UIApplicationDidReceiveMemoryWarningNotification object:nil];
// set initial position
//
mbgl::CameraOptions options;
options.center = mbgl::LatLng(0, 0);
mbgl::EdgeInsets padding = MGLEdgeInsetsFromNSEdgeInsets(self.contentInset);
options.padding = padding;
options.zoom = 0;
_mbglMap->jumpTo(options);
_pendingLatitude = NAN;
_pendingLongitude = NAN;
_targetCoordinate = kCLLocationCoordinate2DInvalid;
// metrics: map load event
mbgl::LatLng latLng = _mbglMap->getLatLng(padding);
int zoom = round(_mbglMap->getZoom());
[MGLMapboxEvents pushEvent:MGLEventTypeMapLoad withAttributes:@{
MGLEventKeyLatitude: @(latLng.latitude),
MGLEventKeyLongitude: @(latLng.longitude),
MGLEventKeyZoomLevel: @(zoom),
MGLEventKeyPushEnabled: @([MGLMapboxEvents checkPushEnabled])
}];
}
- (void)createGLView
{
if (_context) return;
// create context
//
_context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
NSAssert(_context, @"Failed to create OpenGL ES context.");
// create GL view
//
_glView = [[GLKView alloc] initWithFrame:self.bounds context:_context];
_glView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
_glView.enableSetNeedsDisplay = NO;
_glView.drawableStencilFormat = GLKViewDrawableStencilFormat8;
_glView.drawableDepthFormat = GLKViewDrawableDepthFormat16;
_glView.contentScaleFactor = [UIScreen instancesRespondToSelector:@selector(nativeScale)] ? [[UIScreen mainScreen] nativeScale] : [[UIScreen mainScreen] scale];
_glView.layer.opaque = _opaque;
_glView.delegate = self;
[_glView bindDrawable];
[self insertSubview:_glView atIndex:0];
_glView.contentMode = UIViewContentModeCenter;
// load extensions
//
mbgl::gl::InitializeExtensions([](const char * name) {
static CFBundleRef framework = CFBundleGetBundleWithIdentifier(CFSTR("com.apple.opengles"));
if (!framework) {
throw std::runtime_error("Failed to load OpenGL framework.");
}
CFStringRef str = CFStringCreateWithCString(kCFAllocatorDefault, name, kCFStringEncodingASCII);
void* symbol = CFBundleGetFunctionPointerForName(framework, str);
CFRelease(str);
return reinterpret_cast<mbgl::gl::glProc>(symbol);
});
}
- (void)reachabilityChanged:(NSNotification *)notification
{
MGLReachability *reachability = [notification object];
if ( ! _isWaitingForRedundantReachableNotification && [reachability isReachable])
{
mbgl::NetworkStatus::Reachable();
}
_isWaitingForRedundantReachableNotification = NO;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
[[MGLAccountManager sharedManager] removeObserver:self forKeyPath:@"accessToken"];
[_attributionButton removeObserver:self forKeyPath:@"hidden"];
[self validateDisplayLink];
if (_mbglMap)
{
delete _mbglMap;
_mbglMap = nullptr;
}
if (_mbglFileSource)
{
delete _mbglFileSource;
_mbglFileSource = nullptr;
}
if (_mbglView)
{
delete _mbglView;
_mbglView = nullptr;
}
if ([[EAGLContext currentContext] isEqual:_context])
{
[EAGLContext setCurrentContext:nil];
}
[self.logoViewConstraints removeAllObjects];
self.logoViewConstraints = nil;
[self.attributionButtonConstraints removeAllObjects];
self.attributionButtonConstraints = nil;
}
- (void)setDelegate:(nullable id<MGLMapViewDelegate>)delegate
{
if (_delegate == delegate) return;
_delegate = delegate;
if ([delegate respondsToSelector:@selector(mapView:symbolNameForAnnotation:)])
{
[NSException raise:@"Method unavailable" format:
@"-mapView:symbolNameForAnnotation: has been removed from the MGLMapViewDelegate protocol, but %@ still implements it. "
@"Implement -[%@ mapView:imageForAnnotation:] instead.",
NSStringFromClass([delegate class]), NSStringFromClass([delegate class])];
}
_delegateHasAlphasForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:alphaForShapeAnnotation:)];
_delegateHasStrokeColorsForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:strokeColorForShapeAnnotation:)];
_delegateHasFillColorsForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:fillColorForPolygonAnnotation:)];
_delegateHasLineWidthsForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:lineWidthForPolylineAnnotation:)];
}
- (void)didReceiveMemoryWarning
{
_mbglMap->onLowMemory();
}
#pragma mark - Layout -
- (void)setFrame:(CGRect)frame
{
[super setFrame:frame];
[self setNeedsLayout];
}
- (void)setBounds:(CGRect)bounds
{
[super setBounds:bounds];
[self setNeedsLayout];
}
+ (BOOL)requiresConstraintBasedLayout
{
return YES;
}
- (UIViewController *)viewControllerForLayoutGuides
{
// Per -[UIResponder nextResponder] documentation, a UIView’s next responder
// is its managing UIViewController if applicable, or otherwise its
// superview. UIWindow’s next responder is UIApplication, which has no next
// responder.
UIResponder *laterResponder = self;
while ([laterResponder isKindOfClass:[UIView class]])
{
laterResponder = laterResponder.nextResponder;
}
if ([laterResponder isKindOfClass:[UIViewController class]])
{
return (UIViewController *)laterResponder;
}
return nil;
}
- (void)updateConstraints
{
// If we have a view controller reference, use its layout guides for our various top & bottom
// views so they don't underlap navigation or tool bars. If we don't have a reference, apply
// constraints against ourself to maintain (albeit less ideal) placement of the subviews.
//
UIViewController *viewController = self.viewControllerForLayoutGuides;
UIView *constraintParentView = (viewController.view ? viewController.view : self);
// compass
//
UIView *compassContainer = self.compassView.superview;
[compassContainer removeConstraints:compassContainer.constraints];
NSMutableArray *compassContainerConstraints = [NSMutableArray array];
if (viewController)
{
[compassContainerConstraints addObject:
[NSLayoutConstraint constraintWithItem:compassContainer
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationGreaterThanOrEqual
toItem:viewController.topLayoutGuide
attribute:NSLayoutAttributeBottom
multiplier:1
constant:5]];
}
[compassContainerConstraints addObject:
[NSLayoutConstraint constraintWithItem:compassContainer
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationGreaterThanOrEqual
toItem:self
attribute:NSLayoutAttributeTop
multiplier:1
constant:5]];
[compassContainerConstraints addObject:
[NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:compassContainer
attribute:NSLayoutAttributeTrailing
multiplier:1
constant:5]];
[compassContainerConstraints addObject:
[NSLayoutConstraint constraintWithItem:compassContainer
attribute:NSLayoutAttributeWidth
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:NSLayoutAttributeNotAnAttribute
multiplier:1
constant:self.compassView.image.size.width]];
[compassContainerConstraints addObject:
[NSLayoutConstraint constraintWithItem:compassContainer
attribute:NSLayoutAttributeHeight
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:NSLayoutAttributeNotAnAttribute
multiplier:1
constant:self.compassView.image.size.height]];
[constraintParentView addConstraints:compassContainerConstraints];
// logo bug
//
[self.logoView removeConstraints:self.logoViewConstraints];
[self.logoViewConstraints removeAllObjects];
if (viewController)
{
[self.logoViewConstraints addObject:
[NSLayoutConstraint constraintWithItem:viewController.bottomLayoutGuide
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationGreaterThanOrEqual
toItem:self.logoView
attribute:NSLayoutAttributeBaseline
multiplier:1
constant:8]];
}
[self.logoViewConstraints addObject:
[NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationGreaterThanOrEqual
toItem:self.logoView
attribute:NSLayoutAttributeBaseline
multiplier:1
constant:8]];
[self.logoViewConstraints addObject:
[NSLayoutConstraint constraintWithItem:self.logoView
attribute:NSLayoutAttributeLeading
relatedBy:NSLayoutRelationEqual
toItem:self
attribute:NSLayoutAttributeLeading
multiplier:1
constant:8]];
[constraintParentView addConstraints:self.logoViewConstraints];
// attribution button
//
[self.attributionButton removeConstraints:self.attributionButtonConstraints];
[self.attributionButtonConstraints removeAllObjects];
if (viewController)
{
[self.attributionButtonConstraints addObject:
[NSLayoutConstraint constraintWithItem:viewController.bottomLayoutGuide
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationGreaterThanOrEqual
toItem:self.attributionButton
attribute:NSLayoutAttributeBaseline
multiplier:1
constant:8]];
}
[self.attributionButtonConstraints addObject:
[NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationGreaterThanOrEqual
toItem:self.attributionButton
attribute:NSLayoutAttributeBaseline
multiplier:1
constant:8]];
[self.attributionButtonConstraints addObject:
[NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:self.attributionButton
attribute:NSLayoutAttributeTrailing
multiplier:1
constant:8]];
[constraintParentView addConstraints:self.attributionButtonConstraints];
[super updateConstraints];
}
- (BOOL)isOpaque
{
return _opaque;
}
- (void)setOpaque:(BOOL)opaque
{
_glView.layer.opaque = _opaque = opaque;
}
// This is the delegate of the GLKView object's display call.
- (void)glkView:(__unused GLKView *)view drawInRect:(__unused CGRect)rect
{
if ( ! self.isDormant)
{
CGFloat zoomFactor = _mbglMap->getMaxZoom() - _mbglMap->getMinZoom() + 1;
CGFloat cpuFactor = (CGFloat)[[NSProcessInfo processInfo] processorCount];
CGFloat memoryFactor = (CGFloat)[[NSProcessInfo processInfo] physicalMemory] / 1000 / 1000 / 1000;
CGFloat sizeFactor = ((CGFloat)_mbglMap->getWidth() / mbgl::util::tileSize) *
((CGFloat)_mbglMap->getHeight() / mbgl::util::tileSize);
NSUInteger cacheSize = zoomFactor * cpuFactor * memoryFactor * sizeFactor * 0.5;
_mbglMap->setSourceTileCacheSize(cacheSize);
_mbglMap->renderSync();
[self updateUserLocationAnnotationView];
}
}
// This gets called when the view dimension changes, e.g. because the device is being rotated.
- (void)layoutSubviews
{
[super layoutSubviews];
[self adjustContentInset];
if ( ! _isTargetingInterfaceBuilder)
{
_mbglMap->update(mbgl::Update::Dimensions);
}
if (self.attributionSheet.visible)
{
[self.attributionSheet dismissWithClickedButtonIndex:self.attributionSheet.cancelButtonIndex animated:YES];
}
if (self.compassView.alpha)
{
[self updateHeadingForDeviceOrientation];
[self updateCompass];
}
[self updateUserLocationAnnotationView];
}
/// Updates `contentInset` to reflect the current window geometry.
- (void)adjustContentInset
{
// We could crawl all the way up the responder chain using
// -viewControllerForLayoutGuides, but an intervening view means that any
// manual contentInset should not be overridden; something other than the
// top and bottom bars may be influencing the manual inset.
UIViewController *viewController;
if ([self.nextResponder isKindOfClass:[UIViewController class]])
{
// This map view is the content view of a view controller.
viewController = (UIViewController *)self.nextResponder;
}
else if ([self.superview.nextResponder isKindOfClass:[UIViewController class]])
{
// This map view is an immediate child of a view controller’s content view.
viewController = (UIViewController *)self.superview.nextResponder;
}
if ( ! viewController.automaticallyAdjustsScrollViewInsets)
{
return;
}
UIEdgeInsets contentInset = UIEdgeInsetsZero;
CGPoint topPoint = CGPointMake(0, viewController.topLayoutGuide.length);
contentInset.top = [self convertPoint:topPoint fromView:viewController.view].y;
CGPoint bottomPoint = CGPointMake(0, CGRectGetMaxY(viewController.view.bounds)
- viewController.bottomLayoutGuide.length);
contentInset.bottom = (CGRectGetMaxY(self.bounds)
- [self convertPoint:bottomPoint fromView:viewController.view].y);
self.contentInset = contentInset;
}
- (void)setContentInset:(UIEdgeInsets)contentInset
{
[self setContentInset:contentInset animated:NO];
}
- (void)setContentInset:(UIEdgeInsets)contentInset animated:(BOOL)animated
{
if (UIEdgeInsetsEqualToEdgeInsets(contentInset, self.contentInset))
{
return;
}
// After adjusting the content inset, move the center coordinate from the
// old frame of reference to the new one represented by the newly set
// content inset.
CLLocationCoordinate2D oldCenter = self.centerCoordinate;
_contentInset = contentInset;
if (self.userTrackingMode == MGLUserTrackingModeNone)
{
// Don’t call -setCenterCoordinate:, which resets the user tracking mode.
[self _setCenterCoordinate:oldCenter animated:animated];
}
else
{
[self didUpdateLocationWithUserTrackingAnimated:animated];
}
}
/// Returns the frame of inset content within the map view.
- (CGRect)contentFrame
{
return UIEdgeInsetsInsetRect(self.bounds, self.contentInset);
}
/// Returns the center point of the inset content within the map view.
- (CGPoint)contentCenter
{
CGRect contentFrame = self.contentFrame;
return CGPointMake(CGRectGetMidX(contentFrame), CGRectGetMidY(contentFrame));
}
#pragma mark - Life Cycle -
- (void)updateFromDisplayLink
{
MGLAssertIsMainThread();
if (_needsDisplayRefresh)
{
_needsDisplayRefresh = NO;
[self.glView display];
}
}
- (void)setNeedsGLDisplay
{
MGLAssertIsMainThread();
_needsDisplayRefresh = YES;
}
- (void)willTerminate
{
MGLAssertIsMainThread();
if ( ! self.isDormant)
{
[self validateDisplayLink];
self.dormant = YES;
_mbglMap->pause();
[self.glView deleteDrawable];
}
}
- (void)validateDisplayLink
{
BOOL isVisible = self.superview && self.window;
if (isVisible && ! _displayLink)
{
_displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(updateFromDisplayLink)];
_displayLink.frameInterval = MGLTargetFrameInterval;
[_displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
_needsDisplayRefresh = YES;
}
else if ( ! isVisible && _displayLink)
{
[_displayLink invalidate];
_displayLink = nil;
}
}
- (void)didMoveToWindow
{
[self validateDisplayLink];
[super didMoveToWindow];
}
- (void)didMoveToSuperview
{
[self validateDisplayLink];
[super didMoveToSuperview];
}
- (void)sleepGL:(__unused NSNotification *)notification
{
MGLAssertIsMainThread();
if ( ! self.dormant)
{
self.dormant = YES;
[MGLMapboxEvents flush];
_displayLink.paused = YES;
if ( ! self.glSnapshotView)
{
self.glSnapshotView = [[UIImageView alloc] initWithFrame:self.glView.frame];
self.glSnapshotView.autoresizingMask = self.glView.autoresizingMask;
self.glSnapshotView.contentMode = UIViewContentModeCenter;
[self insertSubview:self.glSnapshotView aboveSubview:self.glView];
}
self.glSnapshotView.image = self.glView.snapshot;
self.glSnapshotView.hidden = NO;
if (_mbglMap->getDebug() != mbgl::MapDebugOptions::NoDebug && [self.glSnapshotView.subviews count] == 0)
{
UIView *snapshotTint = [[UIView alloc] initWithFrame:self.glSnapshotView.bounds];
snapshotTint.autoresizingMask = self.glSnapshotView.autoresizingMask;
snapshotTint.backgroundColor = [[UIColor redColor] colorWithAlphaComponent:0.25];
[self.glSnapshotView addSubview:snapshotTint];
}
_mbglMap->pause();
[self.glView deleteDrawable];
}
}
- (void)wakeGL:(__unused NSNotification *)notification
{
MGLAssertIsMainThread();
if (self.dormant && [UIApplication sharedApplication].applicationState != UIApplicationStateBackground)
{
self.dormant = NO;
[self createGLView];
[MGLMapboxEvents validate];
self.glSnapshotView.hidden = YES;
[self.glSnapshotView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
[self.glView bindDrawable];