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MGLMapView.mm
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MGLMapView.mm
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#import "MGLMapView_Private.h"
#import "MGLAttributionButton.h"
#import "MGLCompassCell.h"
#import "MGLOpenGLLayer.h"
#import "MGLStyle.h"
#import "MGLRendererFrontend.h"
#import "MGLRendererConfiguration.h"
#import "MGLAnnotationImage_Private.h"
#import "MGLAttributionInfo_Private.h"
#import "MGLFeature_Private.h"
#import "MGLFoundation_Private.h"
#import "MGLGeometry_Private.h"
#import "MGLMultiPoint_Private.h"
#import "MGLOfflineStorage_Private.h"
#import "MGLStyle_Private.h"
#import "MGLShape_Private.h"
#import "MGLAccountManager.h"
#import "MGLMapCamera.h"
#import "MGLPolygon.h"
#import "MGLPolyline.h"
#import "MGLAnnotationImage.h"
#import "MGLMapViewDelegate.h"
#import "MGLImageSource.h"
#import <mbgl/map/map.hpp>
#import <mbgl/style/style.hpp>
#import <mbgl/annotation/annotation.hpp>
#import <mbgl/map/camera.hpp>
#import <mbgl/storage/reachability.h>
#import <mbgl/util/default_thread_pool.hpp>
#import <mbgl/style/image.hpp>
#import <mbgl/renderer/renderer.hpp>
#import <mbgl/renderer/renderer_backend.hpp>
#import <mbgl/renderer/backend_scope.hpp>
#import <mbgl/storage/default_file_source.hpp>
#import <mbgl/storage/network_status.hpp>
#import <mbgl/math/wrap.hpp>
#import <mbgl/util/constants.hpp>
#import <mbgl/util/chrono.hpp>
#import <mbgl/util/exception.hpp>
#import <mbgl/util/run_loop.hpp>
#import <mbgl/util/shared_thread_pool.hpp>
#import <mbgl/util/string.hpp>
#import <mbgl/util/projection.hpp>
#import <map>
#import <unordered_map>
#import <unordered_set>
#import "NSBundle+MGLAdditions.h"
#import "NSDate+MGLAdditions.h"
#import "NSProcessInfo+MGLAdditions.h"
#import "NSException+MGLAdditions.h"
#import "NSString+MGLAdditions.h"
#import "NSURL+MGLAdditions.h"
#import "NSColor+MGLAdditions.h"
#import "NSImage+MGLAdditions.h"
#import "NSPredicate+MGLPrivateAdditions.h"
#import <QuartzCore/QuartzCore.h>
#import <OpenGL/gl.h>
class MGLMapViewImpl;
class MGLAnnotationContext;
/// Distance from the edge of the view to ornament views (logo, attribution, etc.).
const CGFloat MGLOrnamentPadding = 12;
/// Alpha value of the ornament views (logo, attribution, etc.).
const CGFloat MGLOrnamentOpacity = 0.9;
/// Default duration for programmatic animations.
const NSTimeInterval MGLAnimationDuration = 0.3;
/// Distance in points that a single press of the panning keyboard shortcut pans the map by.
const CGFloat MGLKeyPanningIncrement = 150;
/// Degrees that a single press of the rotation keyboard shortcut rotates the map by.
const CLLocationDegrees MGLKeyRotationIncrement = 25;
/// Key for the user default that, when true, causes the map view to zoom in and out on scroll wheel events.
NSString * const MGLScrollWheelZoomsMapViewDefaultKey = @"MGLScrollWheelZoomsMapView";
/// 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.
static NSString * const MGLAnnotationSpritePrefix = @"com.mapbox.sprites.";
/// Slop area around the hit testing point, allowing for imprecise annotation selection.
const CGFloat MGLAnnotationImagePaddingForHitTest = 4;
/// Distance from the callout’s anchor point to the annotation it points to.
const CGFloat MGLAnnotationImagePaddingForCallout = 4;
/// Padding to edge of view that an offscreen annotation must have when being brought onscreen (by being selected)
const NSEdgeInsets MGLMapViewOffscreenAnnotationPadding = NSEdgeInsetsMake(-30.0f, -30.0f, -30.0f, -30.0f);
/// 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::unordered_map<MGLAnnotationTag, MGLAnnotationContext> MGLAnnotationTagContextMap;
/// Mapping from an annotation object to an annotation tag.
typedef std::map<id<MGLAnnotation>, MGLAnnotationTag> MGLAnnotationObjectTagMap;
/// Returns an NSImage for the default marker image.
NSImage *MGLDefaultMarkerImage() {
NSString *path = [[NSBundle mgl_frameworkBundle] pathForResource:MGLDefaultStyleMarkerSymbolName
ofType:@"pdf"];
return [[NSImage alloc] initWithContentsOfFile:path];
}
/// Converts a media timing function into a unit bezier object usable in mbgl.
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] };
}
/// Lightweight container for metadata about an annotation, including the annotation itself.
class MGLAnnotationContext {
public:
id <MGLAnnotation> annotation;
/// The annotation’s image’s reuse identifier.
NSString *imageReuseIdentifier;
};
@interface MGLMapView () <NSPopoverDelegate, MGLMultiPointDelegate, NSGestureRecognizerDelegate>
@property (nonatomic, readwrite) NSSegmentedControl *zoomControls;
@property (nonatomic, readwrite) NSSlider *compass;
@property (nonatomic, readwrite) NSImageView *logoView;
@property (nonatomic, readwrite) NSView *attributionView;
@property (nonatomic, readwrite) MGLStyle *style;
/// Mapping from reusable identifiers to annotation images.
@property (nonatomic) NSMutableDictionary<NSString *, MGLAnnotationImage *> *annotationImagesByIdentifier;
/// Currently shown popover representing the selected annotation.
@property (nonatomic) NSPopover *calloutForSelectedAnnotation;
@property (nonatomic, readwrite, getter=isDormant) BOOL dormant;
@end
@implementation MGLMapView {
/// Cross-platform map view controller.
mbgl::Map *_mbglMap;
MGLMapViewImpl *_mbglView;
std::unique_ptr<MGLRenderFrontend> _rendererFrontend;
std::shared_ptr<mbgl::ThreadPool> _mbglThreadPool;
NSPanGestureRecognizer *_panGestureRecognizer;
NSMagnificationGestureRecognizer *_magnificationGestureRecognizer;
NSRotationGestureRecognizer *_rotationGestureRecognizer;
NSClickGestureRecognizer *_singleClickRecognizer;
double _zoomAtBeginningOfGesture;
CLLocationDirection _directionAtBeginningOfGesture;
CGFloat _pitchAtBeginningOfGesture;
BOOL _didHideCursorDuringGesture;
MGLAnnotationTagContextMap _annotationContextsByAnnotationTag;
MGLAnnotationObjectTagMap _annotationTagsByAnnotation;
MGLAnnotationTag _selectedAnnotationTag;
MGLAnnotationTag _lastSelectedAnnotationTag;
/// Size of the rectangle formed by unioning the maximum slop area around every annotation image.
NSSize _unionedAnnotationImageSize;
std::vector<MGLAnnotationTag> _annotationsNearbyLastClick;
/// True if any annotations that have tooltips have been installed.
BOOL _wantsToolTipRects;
/// True if any annotation images that have custom cursors have been installed.
BOOL _wantsCursorRects;
/// True if a willChange notification has been issued for shape annotation layers and a didChange notification is pending.
BOOL _isChangingAnnotationLayers;
// Cached checks for delegate method implementations that may be called from
// MGLMultiPointDelegate methods.
BOOL _delegateHasAlphasForShapeAnnotations;
BOOL _delegateHasStrokeColorsForShapeAnnotations;
BOOL _delegateHasFillColorsForShapeAnnotations;
BOOL _delegateHasLineWidthsForShapeAnnotations;
/// True if the current process is the Interface Builder designable
/// renderer. When drawing the designable, the map is paused, so any call to
/// it may hang the process.
BOOL _isTargetingInterfaceBuilder;
CLLocationDegrees _pendingLatitude;
CLLocationDegrees _pendingLongitude;
/// True if the view is currently printing itself.
BOOL _isPrinting;
/// reachability instance
MGLReachability *_reachability;
}
#pragma mark Lifecycle
+ (void)initialize {
if (self == [MGLMapView class]) {
[[NSUserDefaults standardUserDefaults] registerDefaults:@{
MGLScrollWheelZoomsMapViewDefaultKey: @NO,
}];
}
}
- (instancetype)initWithFrame:(NSRect)frameRect {
if (self = [super initWithFrame:frameRect]) {
[self commonInit];
self.styleURL = nil;
}
return self;
}
- (instancetype)initWithFrame:(NSRect)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];
}
return self;
}
- (void)awakeFromNib {
[super awakeFromNib];
// If the Style URL inspectable was not set, make sure to go through
// -setStyleURL: to load the default style.
if (_mbglMap->getStyle().getURL().empty()) {
self.styleURL = nil;
}
}
+ (NSArray *)restorableStateKeyPaths {
return @[@"camera", @"debugMask"];
}
- (void)commonInit {
_isTargetingInterfaceBuilder = NSProcessInfo.processInfo.mgl_isInterfaceBuilderDesignablesAgent;
// Set up cross-platform controllers and resources.
_mbglView = new MGLMapViewImpl(self);
// Delete the pre-offline ambient cache at
// ~/Library/Caches/com.mapbox.sdk.ios/cache.db.
NSURL *cachesDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSCachesDirectory
inDomain:NSUserDomainMask
appropriateForURL:nil
create:NO
error:nil];
cachesDirectoryURL = [cachesDirectoryURL URLByAppendingPathComponent:
[NSBundle mgl_frameworkBundle].bundleIdentifier];
NSURL *legacyCacheURL = [cachesDirectoryURL URLByAppendingPathComponent:@"cache.db"];
[[NSFileManager defaultManager] removeItemAtURL:legacyCacheURL error:NULL];
_mbglThreadPool = mbgl::sharedThreadPool();
MGLRendererConfiguration *config = [MGLRendererConfiguration currentConfiguration];
auto renderer = std::make_unique<mbgl::Renderer>(*_mbglView, config.scaleFactor, *config.fileSource, *_mbglThreadPool, config.contextMode, config.cacheDir, config.localFontFamilyName);
_rendererFrontend = std::make_unique<MGLRenderFrontend>(std::move(renderer), self, *_mbglView, true);
_mbglMap = new mbgl::Map(*_rendererFrontend, *_mbglView, self.size, config.scaleFactor, *config.fileSource, *_mbglThreadPool, mbgl::MapMode::Continuous, mbgl::ConstrainMode::None, mbgl::ViewportMode::Default);
// Install the OpenGL layer. Interface Builder’s synchronous drawing means
// we can’t display a map, so don’t even bother to have a map layer.
self.layer = _isTargetingInterfaceBuilder ? [CALayer layer] : [MGLOpenGLLayer layer];
// Notify map object when network reachability status changes.
_reachability = [MGLReachability reachabilityForInternetConnection];
_reachability.reachableBlock = ^(MGLReachability *) {
mbgl::NetworkStatus::Reachable();
};
[_reachability startNotifier];
// Install ornaments and gesture recognizers.
[self installZoomControls];
[self installCompass];
[self installLogoView];
[self installAttributionView];
[self installGestureRecognizers];
// Set up annotation management and selection state.
_annotationImagesByIdentifier = [NSMutableDictionary dictionary];
_annotationContextsByAnnotationTag = {};
_annotationTagsByAnnotation = {};
_selectedAnnotationTag = MGLAnnotationTagNotFound;
_lastSelectedAnnotationTag = MGLAnnotationTagNotFound;
_annotationsNearbyLastClick = {};
// Jump to Null Island initially.
self.automaticallyAdjustsContentInsets = YES;
mbgl::CameraOptions options;
options.center = mbgl::LatLng(0, 0);
options.padding = MGLEdgeInsetsFromNSEdgeInsets(self.contentInsets);
options.zoom = _mbglMap->getMinZoom();
_mbglMap->jumpTo(options);
_pendingLatitude = NAN;
_pendingLongitude = NAN;
}
- (mbgl::Size)size {
// check for minimum texture size supported by OpenGL ES 2.0
//
CGSize size = CGSizeMake(MAX(self.bounds.size.width, 64), MAX(self.bounds.size.height, 64));
return { static_cast<uint32_t>(size.width),
static_cast<uint32_t>(size.height) };
}
- (mbgl::Size)framebufferSize {
NSRect bounds = [self convertRectToBacking:self.bounds];
return { static_cast<uint32_t>(bounds.size.width), static_cast<uint32_t>(bounds.size.height) };
}
/// Adds zoom controls to the lower-right corner.
- (void)installZoomControls {
_zoomControls = [[NSSegmentedControl alloc] initWithFrame:NSZeroRect];
_zoomControls.wantsLayer = YES;
_zoomControls.layer.opacity = MGLOrnamentOpacity;
[(NSSegmentedCell *)_zoomControls.cell setTrackingMode:NSSegmentSwitchTrackingMomentary];
_zoomControls.continuous = YES;
_zoomControls.segmentCount = 2;
[_zoomControls setLabel:NSLocalizedStringWithDefaultValue(@"ZOOM_OUT_LABEL", nil, nil, @"−", @"Label of Zoom Out button; U+2212 MINUS SIGN") forSegment:0];
[(NSSegmentedCell *)_zoomControls.cell setTag:0 forSegment:0];
[(NSSegmentedCell *)_zoomControls.cell setToolTip:NSLocalizedStringWithDefaultValue(@"ZOOM_OUT_TOOLTIP", nil, nil, @"Zoom Out", @"Tooltip of Zoom Out button") forSegment:0];
[_zoomControls setLabel:NSLocalizedStringWithDefaultValue(@"ZOOM_IN_LABEL", nil, nil, @"+", @"Label of Zoom In button") forSegment:1];
[(NSSegmentedCell *)_zoomControls.cell setTag:1 forSegment:1];
[(NSSegmentedCell *)_zoomControls.cell setToolTip:NSLocalizedStringWithDefaultValue(@"ZOOM_IN_TOOLTIP", nil, nil, @"Zoom In", @"Tooltip of Zoom In button") forSegment:1];
_zoomControls.target = self;
_zoomControls.action = @selector(zoomInOrOut:);
_zoomControls.controlSize = NSRegularControlSize;
[_zoomControls sizeToFit];
_zoomControls.translatesAutoresizingMaskIntoConstraints = NO;
[self addSubview:_zoomControls];
}
/// Adds a rudimentary compass control to the lower-right corner.
- (void)installCompass {
_compass = [[NSSlider alloc] initWithFrame:NSZeroRect];
_compass.wantsLayer = YES;
_compass.layer.opacity = MGLOrnamentOpacity;
_compass.cell = [[MGLCompassCell alloc] init];
_compass.continuous = YES;
_compass.target = self;
_compass.action = @selector(rotate:);
[_compass sizeToFit];
_compass.translatesAutoresizingMaskIntoConstraints = NO;
[self addSubview:_compass];
}
/// Adds a Mapbox logo to the lower-left corner.
- (void)installLogoView {
_logoView = [[NSImageView alloc] initWithFrame:NSZeroRect];
_logoView.wantsLayer = YES;
NSImage *logoImage = [[NSImage alloc] initWithContentsOfFile:
[[NSBundle mgl_frameworkBundle] pathForResource:@"mapbox" ofType:@"pdf"]];
// Account for the image’s built-in padding when aligning other controls to the logo.
logoImage.alignmentRect = NSOffsetRect(logoImage.alignmentRect, 0, 3);
_logoView.image = logoImage;
_logoView.translatesAutoresizingMaskIntoConstraints = NO;
_logoView.accessibilityTitle = NSLocalizedStringWithDefaultValue(@"MAP_A11Y_TITLE", nil, nil, @"Mapbox", @"Accessibility title");
[self addSubview:_logoView];
}
/// Adds legally required map attribution to the lower-left corner.
- (void)installAttributionView {
[_attributionView removeFromSuperview];
_attributionView = [[NSView alloc] initWithFrame:NSZeroRect];
_attributionView.wantsLayer = YES;
// Make the background and foreground translucent to be unobtrusive.
_attributionView.layer.opacity = 0.6;
// Blur the background to prevent text underneath the view from running into
// the text in the view, rendering it illegible.
CIFilter *attributionBlurFilter = [CIFilter filterWithName:@"CIGaussianBlur"];
[attributionBlurFilter setDefaults];
// Brighten the background. This is similar to applying a translucent white
// background on the view, but the effect is a bit more subtle and works
// well with the blur above.
CIFilter *attributionColorFilter = [CIFilter filterWithName:@"CIColorControls"];
[attributionColorFilter setDefaults];
[attributionColorFilter setValue:@(0.1) forKey:kCIInputBrightnessKey];
// Apply the background effects and a standard button corner radius.
_attributionView.backgroundFilters = @[attributionColorFilter, attributionBlurFilter];
_attributionView.layer.cornerRadius = 4;
_attributionView.translatesAutoresizingMaskIntoConstraints = NO;
[self addSubview:_attributionView];
[self updateAttributionView];
}
/// Adds gesture recognizers for manipulating the viewport and selecting annotations.
- (void)installGestureRecognizers {
_scrollEnabled = YES;
_zoomEnabled = YES;
_rotateEnabled = YES;
_pitchEnabled = YES;
_panGestureRecognizer = [[NSPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
_panGestureRecognizer.delaysKeyEvents = YES;
[self addGestureRecognizer:_panGestureRecognizer];
_singleClickRecognizer = [[NSClickGestureRecognizer alloc] initWithTarget:self action:@selector(handleClickGesture:)];
_singleClickRecognizer.delaysPrimaryMouseButtonEvents = NO;
_singleClickRecognizer.delegate = self;
[self addGestureRecognizer:_singleClickRecognizer];
NSClickGestureRecognizer *rightClickGestureRecognizer = [[NSClickGestureRecognizer alloc] initWithTarget:self action:@selector(handleRightClickGesture:)];
rightClickGestureRecognizer.buttonMask = 0x2;
[self addGestureRecognizer:rightClickGestureRecognizer];
NSClickGestureRecognizer *doubleClickGestureRecognizer = [[NSClickGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleClickGesture:)];
doubleClickGestureRecognizer.numberOfClicksRequired = 2;
doubleClickGestureRecognizer.delaysPrimaryMouseButtonEvents = NO;
[self addGestureRecognizer:doubleClickGestureRecognizer];
_magnificationGestureRecognizer = [[NSMagnificationGestureRecognizer alloc] initWithTarget:self action:@selector(handleMagnificationGesture:)];
[self addGestureRecognizer:_magnificationGestureRecognizer];
_rotationGestureRecognizer = [[NSRotationGestureRecognizer alloc] initWithTarget:self action:@selector(handleRotationGesture:)];
[self addGestureRecognizer:_rotationGestureRecognizer];
}
/// Updates the attribution view to reflect the sources used. For now, this is
/// hard-coded to the standard Mapbox and OpenStreetMap attribution.
- (void)updateAttributionView {
NSView *attributionView = self.attributionView;
for (NSView *button in attributionView.subviews) {
[button removeConstraints:button.constraints];
}
attributionView.subviews = @[];
[attributionView removeConstraints:attributionView.constraints];
// Make the whole string mini by default.
// Force links to be black, because the default blue is distracting.
CGFloat miniSize = [NSFont systemFontSizeForControlSize:NSMiniControlSize];
NSArray *attributionInfos = [self.style attributionInfosWithFontSize:miniSize linkColor:[NSColor blackColor]];
for (MGLAttributionInfo *info in attributionInfos) {
// Feedback links are added to the Help menu.
if (info.feedbackLink) {
continue;
}
// For each attribution, add a borderless button that responds to clicks
// and feels like a hyperlink.
NSButton *button = [[MGLAttributionButton alloc] initWithAttributionInfo:info];
button.controlSize = NSMiniControlSize;
button.translatesAutoresizingMaskIntoConstraints = NO;
// Set the new button flush with the buttom of the container and to the
// right of the previous button, with standard spacing. If there is no
// previous button, align to the container instead.
NSView *previousView = attributionView.subviews.lastObject;
[attributionView addSubview:button];
[attributionView addConstraint:
[NSLayoutConstraint constraintWithItem:button
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:attributionView
attribute:NSLayoutAttributeBottom
multiplier:1
constant:0]];
[attributionView addConstraint:
[NSLayoutConstraint constraintWithItem:button
attribute:NSLayoutAttributeLeading
relatedBy:NSLayoutRelationEqual
toItem:previousView ? previousView : attributionView
attribute:previousView ? NSLayoutAttributeTrailing : NSLayoutAttributeLeading
multiplier:1
constant:8]];
[attributionView addConstraint:
[NSLayoutConstraint constraintWithItem:button
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:attributionView
attribute:NSLayoutAttributeTop
multiplier:1
constant:0]];
}
if (attributionInfos.count) {
[attributionView addConstraint:
[NSLayoutConstraint constraintWithItem:attributionView
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:attributionView.subviews.lastObject
attribute:NSLayoutAttributeTrailing
multiplier:1
constant:8]];
}
}
- (void)dealloc {
[_reachability stopNotifier];
[self.window removeObserver:self forKeyPath:@"contentLayoutRect"];
[self.window removeObserver:self forKeyPath:@"titlebarAppearsTransparent"];
// Close any annotation callout immediately.
[self.calloutForSelectedAnnotation close];
self.calloutForSelectedAnnotation = nil;
// Removing the annotations unregisters any outstanding KVO observers.
[self removeAnnotations:self.annotations];
if (_mbglMap) {
delete _mbglMap;
_mbglMap = nullptr;
}
if (_mbglView) {
delete _mbglView;
_mbglView = nullptr;
}
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(__unused NSDictionary *)change context:(void *)context {
if ([keyPath isEqualToString:@"contentLayoutRect"] ||
[keyPath isEqualToString:@"titlebarAppearsTransparent"]) {
[self adjustContentInsets];
} else if ([keyPath isEqualToString:@"coordinate"] &&
[object conformsToProtocol:@protocol(MGLAnnotation)] &&
![object isKindOfClass:[MGLMultiPoint class]]) {
id <MGLAnnotation> annotation = object;
MGLAnnotationTag annotationTag = (MGLAnnotationTag)(NSUInteger)context;
// We can get here because a subclass registered itself as an observer
// of the coordinate key path of a non-multipoint annotation but failed
// to handle the change. This check deters us from treating the
// subclass’s context as an annotation tag. If the context happens to
// match a valid annotation tag, the annotation will be unnecessarily
// but safely updated.
if (annotation == [self annotationWithTag:annotationTag]) {
const mbgl::Point<double> point = MGLPointFromLocationCoordinate2D(annotation.coordinate);
MGLAnnotationImage *annotationImage = [self imageOfAnnotationWithTag:annotationTag];
_mbglMap->updateAnnotation(annotationTag, mbgl::SymbolAnnotation { point, annotationImage.styleIconIdentifier.UTF8String ?: "" });
[self updateAnnotationCallouts];
}
} else if ([keyPath isEqualToString:@"coordinates"] &&
[object isKindOfClass:[MGLMultiPoint class]]) {
MGLMultiPoint *annotation = object;
MGLAnnotationTag annotationTag = (MGLAnnotationTag)(NSUInteger)context;
// We can get here because a subclass registered itself as an observer
// of the coordinates key path of a multipoint annotation but failed
// to handle the change. This check deters us from treating the
// subclass’s context as an annotation tag. If the context happens to
// match a valid annotation tag, the annotation will be unnecessarily
// but safely updated.
if (annotation == [self annotationWithTag:annotationTag]) {
_mbglMap->updateAnnotation(annotationTag, [annotation annotationObjectWithDelegate:self]);
[self updateAnnotationCallouts];
}
}
}
+ (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key {
return [key isEqualToString:@"annotations"] ? YES : [super automaticallyNotifiesObserversForKey:key];
}
- (void)setDelegate:(id<MGLMapViewDelegate>)delegate {
_delegate = delegate;
// Cache checks for delegate method implementations that may be called in a
// hot loop, namely the annotation style methods.
_delegateHasAlphasForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:alphaForShapeAnnotation:)];
_delegateHasStrokeColorsForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:strokeColorForShapeAnnotation:)];
_delegateHasFillColorsForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:fillColorForPolygonAnnotation:)];
_delegateHasLineWidthsForShapeAnnotations = [_delegate respondsToSelector:@selector(mapView:lineWidthForPolylineAnnotation:)];
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wundeclared-selector"
if ([self.delegate respondsToSelector:@selector(mapView:regionWillChangeAnimated:)]) {
NSLog(@"-mapView:regionWillChangeAnimated: is not supported by the macOS SDK, but %@ implements it anyways. "
@"Please implement -[%@ mapView:cameraWillChangeAnimated:] instead.",
NSStringFromClass([delegate class]), NSStringFromClass([delegate class]));
}
if ([self.delegate respondsToSelector:@selector(mapViewRegionIsChanging:)]) {
NSLog(@"-mapViewRegionIsChanging: is not supported by the macOS SDK, but %@ implements it anyways. "
@"Please implement -[%@ mapViewCameraIsChanging:] instead.",
NSStringFromClass([delegate class]), NSStringFromClass([delegate class]));
}
if ([self.delegate respondsToSelector:@selector(mapView:regionDidChangeAnimated:)]) {
NSLog(@"-mapView:regionDidChangeAnimated: is not supported by the macOS SDK, but %@ implements it anyways. "
@"Please implement -[%@ mapView:cameraDidChangeAnimated:] instead.",
NSStringFromClass([delegate class]), NSStringFromClass([delegate class]));
}
#pragma clang diagnostic pop
}
#pragma mark Style
+ (NSSet<NSString *> *)keyPathsForValuesAffectingStyle {
return [NSSet setWithObject:@"styleURL"];
}
- (nonnull NSURL *)styleURL {
NSString *styleURLString = @(_mbglMap->getStyle().getURL().c_str()).mgl_stringOrNilIfEmpty;
return styleURLString ? [NSURL URLWithString:styleURLString] : [MGLStyle streetsStyleURLWithVersion:MGLStyleDefaultVersion];
}
- (void)setStyleURL:(nullable NSURL *)styleURL {
if (_isTargetingInterfaceBuilder) {
return;
}
// Default to Streets.
if (!styleURL) {
styleURL = [MGLStyle streetsStyleURLWithVersion:MGLStyleDefaultVersion];
}
// An access token is required to load any default style, including Streets.
if (![MGLAccountManager accessToken] && [styleURL.scheme isEqualToString:@"mapbox"]) {
NSLog(@"Cannot set the style URL to %@ because no access token has been specified.", styleURL);
return;
}
styleURL = styleURL.mgl_URLByStandardizingScheme;
self.style = nil;
_mbglMap->getStyle().loadURL(styleURL.absoluteString.UTF8String);
}
- (IBAction)reloadStyle:(__unused id)sender {
NSURL *styleURL = self.styleURL;
_mbglMap->getStyle().loadURL("");
self.styleURL = styleURL;
}
- (mbgl::Map *)mbglMap {
return _mbglMap;
}
- (mbgl::Renderer *)renderer {
return _rendererFrontend->getRenderer();
}
#pragma mark View hierarchy and drawing
- (void)viewWillMoveToWindow:(NSWindow *)newWindow {
[self deselectAnnotation:self.selectedAnnotation];
if (!self.dormant && !newWindow) {
self.dormant = YES;
}
[self.window removeObserver:self forKeyPath:@"contentLayoutRect"];
[self.window removeObserver:self forKeyPath:@"titlebarAppearsTransparent"];
}
- (void)viewDidMoveToWindow {
NSWindow *window = self.window;
if (self.dormant && window) {
self.dormant = NO;
}
if (window && _mbglMap->getConstrainMode() == mbgl::ConstrainMode::None) {
_mbglMap->setConstrainMode(mbgl::ConstrainMode::HeightOnly);
}
[window addObserver:self
forKeyPath:@"contentLayoutRect"
options:NSKeyValueObservingOptionInitial
context:NULL];
[window addObserver:self
forKeyPath:@"titlebarAppearsTransparent"
options:NSKeyValueObservingOptionInitial
context:NULL];
}
- (BOOL)wantsLayer {
return YES;
}
- (BOOL)wantsBestResolutionOpenGLSurface {
// Use an OpenGL layer, except when drawing the designable, which is just
// ordinary Cocoa.
return !_isTargetingInterfaceBuilder;
}
- (void)setFrame:(NSRect)frame {
super.frame = frame;
if (!_isTargetingInterfaceBuilder) {
_mbglMap->setSize(self.size);
}
}
- (void)updateConstraints {
// Place the zoom controls at the lower-right corner of the view.
[self addConstraint:
[NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:_zoomControls
attribute:NSLayoutAttributeBottom
multiplier:1
constant:MGLOrnamentPadding]];
[self addConstraint:
[NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:_zoomControls
attribute:NSLayoutAttributeTrailing
multiplier:1
constant:MGLOrnamentPadding]];
// Center the compass above the zoom controls, assuming that the compass is
// narrower than the zoom controls.
[self addConstraint:
[NSLayoutConstraint constraintWithItem:_compass
attribute:NSLayoutAttributeCenterX
relatedBy:NSLayoutRelationEqual
toItem:_zoomControls
attribute:NSLayoutAttributeCenterX
multiplier:1
constant:0]];
[self addConstraint:
[NSLayoutConstraint constraintWithItem:_zoomControls
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:_compass
attribute:NSLayoutAttributeBottom
multiplier:1
constant:8]];
// Place the logo view in the lower-left corner of the view, accounting for
// the logo’s alignment rect.
[self addConstraint:
[NSLayoutConstraint constraintWithItem:self
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:_logoView
attribute:NSLayoutAttributeBottom
multiplier:1
constant:MGLOrnamentPadding - _logoView.image.alignmentRect.origin.y]];
[self addConstraint:
[NSLayoutConstraint constraintWithItem:_logoView
attribute:NSLayoutAttributeLeading
relatedBy:NSLayoutRelationEqual
toItem:self
attribute:NSLayoutAttributeLeading
multiplier:1
constant:MGLOrnamentPadding - _logoView.image.alignmentRect.origin.x]];
// Place the attribution view to the right of the logo view and size it to
// fit the buttons inside.
[self addConstraint:[NSLayoutConstraint constraintWithItem:_logoView
attribute:NSLayoutAttributeBaseline
relatedBy:NSLayoutRelationEqual
toItem:_attributionView
attribute:NSLayoutAttributeBaseline
multiplier:1
constant:_logoView.image.alignmentRect.origin.y]];
[self addConstraint:[NSLayoutConstraint constraintWithItem:_attributionView
attribute:NSLayoutAttributeLeading
relatedBy:NSLayoutRelationEqual
toItem:_logoView
attribute:NSLayoutAttributeTrailing
multiplier:1
constant:8]];
[super updateConstraints];
}
- (void)renderSync {
if (!self.dormant && _rendererFrontend) {
_rendererFrontend->render();
if (_isPrinting) {
_isPrinting = NO;
NSImage *image = [[NSImage alloc] initWithMGLPremultipliedImage:_mbglView->readStillImage()];
[self performSelector:@selector(printWithImage:) withObject:image afterDelay:0];
}
// [self updateUserLocationAnnotationView];
}
}
- (void)setNeedsGLDisplay {
MGLAssertIsMainThread();
[self.layer setNeedsDisplay];
}
- (void)cameraWillChangeAnimated:(BOOL)animated {
if (!_mbglMap) {
return;
}
if ([self.delegate respondsToSelector:@selector(mapView:cameraWillChangeAnimated:)]) {
[self.delegate mapView:self cameraWillChangeAnimated:animated];
}
}
- (void)cameraIsChanging {
if (!_mbglMap) {
return;
}
// Update a minimum of UI that needs to stay attached to the map
// while animating.
[self updateCompass];
[self updateAnnotationCallouts];
if ([self.delegate respondsToSelector:@selector(mapViewCameraIsChanging:)]) {
[self.delegate mapViewCameraIsChanging:self];
}
}
- (void)cameraDidChangeAnimated:(BOOL)animated {
if (!_mbglMap) {
return;
}
// Update all UI at the end of an animation or atomic change to the
// viewport. More expensive updates can happen here, but care should
// still be taken to minimize the work done here because scroll
// gesture recognition and momentum scrolling is performed as a
// series of atomic changes, not an animation.
[self updateZoomControls];
[self updateCompass];
[self updateAnnotationCallouts];
[self updateAnnotationTrackingAreas];
if ([self.delegate respondsToSelector:@selector(mapView:cameraDidChangeAnimated:)]) {
[self.delegate mapView:self cameraDidChangeAnimated:animated];
}
}
- (void)mapViewWillStartLoadingMap {
if (!_mbglMap) {
return;
}
if ([self.delegate respondsToSelector:@selector(mapViewWillStartLoadingMap:)]) {
[self.delegate mapViewWillStartLoadingMap:self];
}
}
- (void)mapViewDidFinishLoadingMap {
if (!_mbglMap) {
return;
}
[self.style willChangeValueForKey:@"sources"];
[self.style didChangeValueForKey:@"sources"];
[self.style willChangeValueForKey:@"layers"];
[self.style didChangeValueForKey:@"layers"];
if ([self.delegate respondsToSelector:@selector(mapViewDidFinishLoadingMap:)]) {
[self.delegate mapViewDidFinishLoadingMap:self];
}
}
- (void)mapViewDidFailLoadingMapWithError:(NSError *)error {
if (!_mbglMap) {
return;
}
if ([self.delegate respondsToSelector:@selector(mapViewDidFailLoadingMap:withError:)]) {
[self.delegate mapViewDidFailLoadingMap:self withError:error];
}
}
- (void)mapViewWillStartRenderingFrame {
if (!_mbglMap) {
return;
}
if ([self.delegate respondsToSelector:@selector(mapViewWillStartRenderingFrame:)]) {
[self.delegate mapViewWillStartRenderingFrame:self];
}
}
- (void)mapViewDidFinishRenderingFrameFullyRendered:(BOOL)fullyRendered {
if (!_mbglMap) {
return;
}
if (_isChangingAnnotationLayers) {
_isChangingAnnotationLayers = NO;
[self.style didChangeValueForKey:@"layers"];
}
if ([self.delegate respondsToSelector:@selector(mapViewDidFinishRenderingFrame:fullyRendered:)]) {
[self.delegate mapViewDidFinishRenderingFrame:self fullyRendered:fullyRendered];
}
}
- (void)mapViewWillStartRenderingMap {
if (!_mbglMap) {
return;
}
if ([self.delegate respondsToSelector:@selector(mapViewWillStartRenderingMap:)]) {
[self.delegate mapViewWillStartRenderingMap:self];
}
}
- (void)mapViewDidFinishRenderingMapFullyRendered:(BOOL)fullyRendered {
if (!_mbglMap) {
return;
}
if ([self.delegate respondsToSelector:@selector(mapViewDidFinishRenderingMap:fullyRendered:)]) {
[self.delegate mapViewDidFinishRenderingMap:self fullyRendered:fullyRendered];
}
}
- (void)mapViewDidFinishLoadingStyle {
if (!_mbglMap) {
return;
}
self.style = [[MGLStyle alloc] initWithRawStyle:&_mbglMap->getStyle() mapView:self];
if ([self.delegate respondsToSelector:@selector(mapView:didFinishLoadingStyle:)])
{
[self.delegate mapView:self didFinishLoadingStyle:self.style];
}
}
- (void)sourceDidChange:(MGLSource *)source {
if (!_mbglMap) {
return;
}
// Attribution only applies to tiled sources
if ([source isKindOfClass:[MGLTileSource class]]) {
[self installAttributionView];
}
self.needsUpdateConstraints = YES;
self.needsDisplay = YES;
}
#pragma mark Printing
- (void)print:(__unused id)sender {
_isPrinting = YES;
[self setNeedsGLDisplay];
}
- (void)printWithImage:(NSImage *)image {
NSImageView *imageView = [[NSImageView alloc] initWithFrame:self.bounds];
imageView.image = image;
NSPrintOperation *op = [NSPrintOperation printOperationWithView:imageView];
[op runOperation];
}
#pragma mark Viewport
+ (NSSet<NSString *> *)keyPathsForValuesAffectingCenterCoordinate {
return [NSSet setWithObjects:@"latitude", @"longitude", @"camera", nil];
}
- (CLLocationCoordinate2D)centerCoordinate {
mbgl::EdgeInsets padding = MGLEdgeInsetsFromNSEdgeInsets(self.contentInsets);
return MGLLocationCoordinate2DFromLatLng(_mbglMap->getLatLng(padding));
}
- (void)setCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate {
[self setCenterCoordinate:centerCoordinate animated:NO];
}
- (void)setCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate animated:(BOOL)animated {
[self willChangeValueForKey:@"centerCoordinate"];
_mbglMap->setLatLng(MGLLatLngFromLocationCoordinate2D(centerCoordinate),
MGLEdgeInsetsFromNSEdgeInsets(self.contentInsets),
MGLDurationFromTimeInterval(animated ? MGLAnimationDuration : 0));
[self didChangeValueForKey:@"centerCoordinate"];
}
- (void)offsetCenterCoordinateBy:(NSPoint)delta animated:(BOOL)animated {
[self willChangeValueForKey:@"centerCoordinate"];
_mbglMap->cancelTransitions();
MGLMapCamera *oldCamera = self.camera;
_mbglMap->moveBy({ delta.x, delta.y },
MGLDurationFromTimeInterval(animated ? MGLAnimationDuration : 0));
if ([self.delegate respondsToSelector:@selector(mapView:shouldChangeFromCamera:toCamera:)]
&& ![self.delegate mapView:self shouldChangeFromCamera:oldCamera toCamera:self.camera]) {
self.camera = oldCamera;
}
[self didChangeValueForKey:@"centerCoordinate"];
}