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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 "../../darwin/src/MGLGeometry_Private.h"
#import "../../darwin/src/MGLMultiPoint_Private.h"
#import "../../darwin/src/MGLOfflineStorage_Private.h"
#import "MGLAccountManager.h"
#import "MGLMapCamera.h"
#import "MGLPolygon.h"
#import "MGLPolyline.h"
#import "MGLAnnotationImage.h"
#import "MGLMapViewDelegate.h"
#import <mbgl/mbgl.hpp>
#import <mbgl/annotation/point_annotation.hpp>
#import <mbgl/map/camera.hpp>
#import <mbgl/platform/darwin/reachability.h>
#import <mbgl/gl/gl.hpp>
#import <mbgl/sprite/sprite_image.hpp>
#import <mbgl/storage/default_file_source.hpp>
#import <mbgl/storage/network_status.hpp>
#import <mbgl/util/constants.hpp>
#import <mbgl/util/math.hpp>
#import <mbgl/util/std.hpp>
#import <mbgl/util/chrono.hpp>
#import <map>
#import <unordered_set>
#import "../../darwin/src/NSBundle+MGLAdditions.h"
#import "../../darwin/src/NSProcessInfo+MGLAdditions.h"
#import "../../darwin/src/NSException+MGLAdditions.h"
#import "../../darwin/src/NSString+MGLAdditions.h"
#import <QuartzCore/QuartzCore.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;
/// 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;
/// Copyright notices displayed in the attribution view.
struct MGLAttribution {
/// Attribution button label text. A copyright symbol is prepended to this string.
NSString *title;
/// URL to open when the attribution button is clicked.
NSString *urlString;
} MGLAttributions[] = {
{ @"Mapbox", @"https://www.mapbox.com/about/maps/" },
{ @"OpenStreetMap", @"http://www.openstreetmap.org/about/" },
};
/// 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;
/// 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 from a duration in seconds to a duration object usable in mbgl.
mbgl::Duration MGLDurationInSeconds(NSTimeInterval duration) {
return std::chrono::duration_cast<mbgl::Duration>(std::chrono::duration<NSTimeInterval>(duration));
}
/// 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] };
}
/// Converts the given color into an mbgl::Color in calibrated RGB space.
mbgl::Color MGLColorObjectFromNSColor(NSColor *color) {
if (!color) {
return {{ 0, 0, 0, 0 }};
}
CGFloat r, g, b, a;
[[color colorUsingColorSpaceName:NSCalibratedRGBColorSpace] 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;
};
@interface MGLMapView () <NSPopoverDelegate, MGLMultiPointDelegate>
@property (nonatomic, readwrite) NSSegmentedControl *zoomControls;
@property (nonatomic, readwrite) NSSlider *compass;
@property (nonatomic, readwrite) NSImageView *logoView;
@property (nonatomic, readwrite) NSView *attributionView;
/// 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) NSPopover *calloutForSelectedAnnotation;
@property (nonatomic, readwrite, getter=isDormant) BOOL dormant;
@end
@implementation MGLMapView {
/// Cross-platform map view controller.
mbgl::Map *_mbglMap;
MGLMapViewImpl *_mbglView;
NSPanGestureRecognizer *_panGestureRecognizer;
NSMagnificationGestureRecognizer *_magnificationGestureRecognizer;
NSRotationGestureRecognizer *_rotationGestureRecognizer;
double _scaleAtBeginningOfGesture;
CLLocationDirection _directionAtBeginningOfGesture;
CGFloat _pitchAtBeginningOfGesture;
BOOL _didHideCursorDuringGesture;
MGLAnnotationContextMap _annotationContextsByAnnotationTag;
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;
// 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;
}
#pragma mark Lifecycle
- (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];
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, [NSScreen mainScreen].backingScaleFactor);
// 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];
mbgl::DefaultFileSource *mbglFileSource = [MGLOfflineStorage sharedOfflineStorage].mbglFileSource;
_mbglMap = new mbgl::Map(*_mbglView, *mbglFileSource, mbgl::MapMode::Continuous, mbgl::GLContextMode::Unique, mbgl::ConstrainMode::None);
// 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.
MGLReachability *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 = {};
_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;
}
/// 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:@"−" forSegment:0]; // U+2212 MINUS SIGN
[(NSSegmentedCell *)_zoomControls.cell setTag:0 forSegment:0];
[(NSSegmentedCell *)_zoomControls.cell setToolTip:@"Zoom Out" forSegment:0];
[_zoomControls setLabel:@"+" forSegment:1];
[(NSSegmentedCell *)_zoomControls.cell setTag:1 forSegment:1];
[(NSSegmentedCell *)_zoomControls.cell setToolTip:@"Zoom In" 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 = NSInsetRect(logoImage.alignmentRect, 3, 3);
_logoView.image = logoImage;
_logoView.translatesAutoresizingMaskIntoConstraints = NO;
_logoView.accessibilityTitle = @"Mapbox";
[self addSubview:_logoView];
}
/// Adds legally required map attribution to the lower-left corner.
- (void)installAttributionView {
_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 {
self.acceptsTouchEvents = YES;
_scrollEnabled = YES;
_zoomEnabled = YES;
_rotateEnabled = YES;
_pitchEnabled = YES;
_panGestureRecognizer = [[NSPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanGesture:)];
_panGestureRecognizer.delaysKeyEvents = YES;
[self addGestureRecognizer:_panGestureRecognizer];
NSClickGestureRecognizer *clickGestureRecognizer = [[NSClickGestureRecognizer alloc] initWithTarget:self action:@selector(handleClickGesture:)];
clickGestureRecognizer.delaysPrimaryMouseButtonEvents = NO;
[self addGestureRecognizer:clickGestureRecognizer];
NSClickGestureRecognizer *secondaryClickGestureRecognizer = [[NSClickGestureRecognizer alloc] initWithTarget:self action:@selector(handleSecondaryClickGesture:)];
secondaryClickGestureRecognizer.buttonMask = 0x2;
[self addGestureRecognizer:secondaryClickGestureRecognizer];
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 {
self.attributionView.subviews = @[];
for (NSUInteger i = 0; i < sizeof(MGLAttributions) / sizeof(MGLAttributions[0]); i++) {
// For each attribution, add a borderless button that responds to clicks
// and feels like a hyperlink.
NSURL *url = [NSURL URLWithString:MGLAttributions[i].urlString];
NSButton *button = [[MGLAttributionButton alloc] initWithTitle:MGLAttributions[i].title URL:url];
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 = self.attributionView.subviews.lastObject;
[self.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]];
}
}
- (void)dealloc {
[self.window removeObserver:self forKeyPath:@"contentLayoutRect"];
[self.window removeObserver:self forKeyPath:@"titlebarAppearsTransparent"];
// Close any annotation callout immediately.
[self.calloutForSelectedAnnotation close];
self.calloutForSelectedAnnotation = nil;
if (_mbglMap) {
delete _mbglMap;
_mbglMap = nullptr;
}
if (_mbglView) {
delete _mbglView;
_mbglView = nullptr;
}
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(__unused id)object change:(__unused NSDictionary *)change context:(__unused void *)context {
if ([keyPath isEqualToString:@"contentLayoutRect"] ||
[keyPath isEqualToString:@"titlebarAppearsTransparent"]) {
[self adjustContentInsets];
}
}
+ (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:)];
if ([self.delegate respondsToSelector:@selector(mapView:regionWillChangeAnimated:)]) {
NSLog(@"-mapView:regionWillChangeAnimated: is not supported by the OS X 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 OS X 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 OS X SDK, but %@ implements it anyways. "
@"Please implement -[%@ mapView:cameraDidChangeAnimated:] instead.",
NSStringFromClass([delegate class]), NSStringFromClass([delegate class]));
}
}
#pragma mark Style
- (nonnull NSURL *)styleURL {
NSString *styleURLString = @(_mbglMap->getStyleURL().c_str()).mgl_stringOrNilIfEmpty;
return styleURLString ? [NSURL URLWithString:styleURLString] : [MGLStyle streetsStyleURL];
}
- (void)setStyleURL:(nullable NSURL *)styleURL {
if (_isTargetingInterfaceBuilder) {
return;
}
// Default to Streets.
if (!styleURL) {
// An access token is required to load any default style, including
// Streets.
if (![MGLAccountManager accessToken]) {
return;
}
styleURL = [MGLStyle streetsStyleURL];
}
if (![styleURL scheme]) {
// Assume a relative path into the application’s resource folder.
styleURL = [NSURL URLWithString:[@"asset://" stringByAppendingString:styleURL.absoluteString]];
}
_mbglMap->setStyleURL(styleURL.absoluteString.UTF8String);
}
- (IBAction)reloadStyle:(__unused id)sender {
NSURL *styleURL = self.styleURL;
_mbglMap->setStyleURL("");
self.styleURL = styleURL;
}
#pragma mark View hierarchy and drawing
- (void)viewWillMoveToWindow:(NSWindow *)newWindow {
[self deselectAnnotation:self.selectedAnnotation];
if (!self.dormant && !newWindow) {
self.dormant = YES;
_mbglMap->pause();
}
[self.window removeObserver:self forKeyPath:@"contentLayoutRect"];
[self.window removeObserver:self forKeyPath:@"titlebarAppearsTransparent"];
}
- (void)viewDidMoveToWindow {
NSWindow *window = self.window;
if (self.dormant && window) {
_mbglMap->resume();
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->update(mbgl::Update::Dimensions);
}
}
- (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]];
[self addConstraint:[NSLayoutConstraint constraintWithItem:_attributionView.subviews.firstObject
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:_attributionView
attribute:NSLayoutAttributeTop
multiplier:1
constant:0]];
[self addConstraint:[NSLayoutConstraint constraintWithItem:_attributionView
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:_attributionView.subviews.lastObject
attribute:NSLayoutAttributeTrailing
multiplier:1
constant:8]];
[super updateConstraints];
}
- (void)renderSync {
if (!self.dormant) {
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];
}
}
- (void)invalidate {
MGLAssertIsMainThread();
[self.layer setNeedsDisplay];
}
- (void)notifyMapChange:(mbgl::MapChange)change {
// Ignore map updates when the Map object isn't set.
if (!_mbglMap) {
return;
}
switch (change) {
case mbgl::MapChangeRegionWillChange:
case mbgl::MapChangeRegionWillChangeAnimated:
{
if ([self.delegate respondsToSelector:@selector(mapView:cameraWillChangeAnimated:)]) {
BOOL animated = change == mbgl::MapChangeRegionWillChangeAnimated;
[self.delegate mapView:self cameraWillChangeAnimated:animated];
}
break;
}
case mbgl::MapChangeRegionIsChanging:
{
// 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];
}
break;
}
case mbgl::MapChangeRegionDidChange:
case mbgl::MapChangeRegionDidChangeAnimated:
{
// 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:)]) {
BOOL animated = change == mbgl::MapChangeRegionDidChangeAnimated;
[self.delegate mapView:self cameraDidChangeAnimated:animated];
}
break;
}
case mbgl::MapChangeWillStartLoadingMap:
{
if ([self.delegate respondsToSelector:@selector(mapViewWillStartLoadingMap:)]) {
[self.delegate mapViewWillStartLoadingMap:self];
}
break;
}
case mbgl::MapChangeDidFinishLoadingMap:
{
if ([self.delegate respondsToSelector:@selector(mapViewDidFinishLoadingMap:)]) {
[self.delegate mapViewDidFinishLoadingMap:self];
}
break;
}
case mbgl::MapChangeDidFailLoadingMap:
{
// Not yet implemented.
break;
}
case mbgl::MapChangeWillStartRenderingMap:
{
if ([self.delegate respondsToSelector:@selector(mapViewWillStartRenderingMap:)]) {
[self.delegate mapViewWillStartRenderingMap:self];
}
break;
}
case mbgl::MapChangeDidFinishRenderingMap:
case mbgl::MapChangeDidFinishRenderingMapFullyRendered:
{
if ([self.delegate respondsToSelector:@selector(mapViewDidFinishRenderingMap:fullyRendered:)]) {
BOOL fullyRendered = change == mbgl::MapChangeDidFinishRenderingMapFullyRendered;
[self.delegate mapViewDidFinishRenderingMap:self fullyRendered:fullyRendered];
}
break;
}
case mbgl::MapChangeWillStartRenderingFrame:
{
if ([self.delegate respondsToSelector:@selector(mapViewWillStartRenderingFrame:)]) {
[self.delegate mapViewWillStartRenderingFrame:self];
}
break;
}
case mbgl::MapChangeDidFinishRenderingFrame:
case mbgl::MapChangeDidFinishRenderingFrameFullyRendered:
{
if ([self.delegate respondsToSelector:@selector(mapViewDidFinishRenderingFrame:fullyRendered:)]) {
BOOL fullyRendered = change == mbgl::MapChangeDidFinishRenderingFrameFullyRendered;
[self.delegate mapViewDidFinishRenderingFrame:self fullyRendered:fullyRendered];
}
break;
}
}
}
#pragma mark Printing
- (void)print:(__unused id)sender {
_isPrinting = YES;
[self invalidate];
}
- (void)printWithImage:(NSImage *)image {
NSImageView *imageView = [[NSImageView alloc] initWithFrame:self.bounds];
imageView.image = image;
NSPrintOperation *op = [NSPrintOperation printOperationWithView:imageView];
[op runOperation];
}
#pragma mark Viewport
+ (NS_SET_OF(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),
MGLDurationInSeconds(animated ? MGLAnimationDuration : 0));
[self didChangeValueForKey:@"centerCoordinate"];
}
- (void)offsetCenterCoordinateBy:(NSPoint)delta animated:(BOOL)animated {
[self willChangeValueForKey:@"centerCoordinate"];
_mbglMap->cancelTransitions();
_mbglMap->moveBy({ delta.x, delta.y },
MGLDurationInSeconds(animated ? MGLAnimationDuration : 0));
[self didChangeValueForKey:@"centerCoordinate"];
}
- (CLLocationDegrees)pendingLatitude {
return _pendingLatitude;
}
- (void)setPendingLatitude:(CLLocationDegrees)pendingLatitude {
_pendingLatitude = pendingLatitude;
}
- (CLLocationDegrees)pendingLongitude {
return _pendingLongitude;
}
- (void)setPendingLongitude:(CLLocationDegrees)pendingLongitude {
_pendingLongitude = pendingLongitude;
}
+ (NS_SET_OF(NSString *) *)keyPathsForValuesAffectingZoomLevel {
return [NSSet setWithObject:@"camera"];
}
- (double)zoomLevel {
return _mbglMap->getZoom();
}
- (void)setZoomLevel:(double)zoomLevel {
[self setZoomLevel:zoomLevel animated:NO];
}
- (void)setZoomLevel:(double)zoomLevel animated:(BOOL)animated {
[self willChangeValueForKey:@"zoomLevel"];
_mbglMap->setZoom(zoomLevel,
MGLEdgeInsetsFromNSEdgeInsets(self.contentInsets),
MGLDurationInSeconds(animated ? MGLAnimationDuration : 0));
[self didChangeValueForKey:@"zoomLevel"];
}
- (void)zoomBy:(double)zoomDelta animated:(BOOL)animated {
[self setZoomLevel:self.zoomLevel + zoomDelta animated:animated];
}
- (void)scaleBy:(double)scaleFactor atPoint:(NSPoint)point animated:(BOOL)animated {
[self willChangeValueForKey:@"centerCoordinate"];
[self willChangeValueForKey:@"zoomLevel"];
mbgl::ScreenCoordinate center(point.x, self.bounds.size.height - point.y);
_mbglMap->scaleBy(scaleFactor, center, MGLDurationInSeconds(animated ? MGLAnimationDuration : 0));
[self didChangeValueForKey:@"zoomLevel"];
[self didChangeValueForKey:@"centerCoordinate"];
}
- (void)setMinimumZoomLevel:(double)minimumZoomLevel
{
_mbglMap->setMinZoom(minimumZoomLevel);
}
- (void)setMaximumZoomLevel:(double)maximumZoomLevel
{
_mbglMap->setMaxZoom(maximumZoomLevel);
}
- (double)maximumZoomLevel {
return _mbglMap->getMaxZoom();
}
- (double)minimumZoomLevel {
return _mbglMap->getMinZoom();
}
/// Respond to a click on the zoom control.
- (IBAction)zoomInOrOut:(NSSegmentedControl *)sender {
switch (sender.selectedSegment) {
case 0:
// Zoom out.
[self moveToEndOfParagraph:sender];
break;
case 1:
// Zoom in.
[self moveToBeginningOfParagraph:sender];
break;
default:
break;
}
}
+ (NS_SET_OF(NSString *) *)keyPathsForValuesAffectingDirection {
return [NSSet setWithObject:@"camera"];
}
- (CLLocationDirection)direction {
return mbgl::util::wrap(_mbglMap->getBearing(), 0., 360.);
}
- (void)setDirection:(CLLocationDirection)direction {
[self setDirection:direction animated:NO];
}
- (void)setDirection:(CLLocationDirection)direction animated:(BOOL)animated {
[self willChangeValueForKey:@"direction"];
_mbglMap->setBearing(direction,
MGLEdgeInsetsFromNSEdgeInsets(self.contentInsets),
MGLDurationInSeconds(animated ? MGLAnimationDuration : 0));
[self didChangeValueForKey:@"direction"];
}
- (void)offsetDirectionBy:(CLLocationDegrees)delta animated:(BOOL)animated {
[self setDirection:_mbglMap->getBearing() + delta animated:animated];
}
+ (NS_SET_OF(NSString *) *)keyPathsForValuesAffectingCamera {
return [NSSet setWithObjects:@"latitude", @"longitude", @"centerCoordinate", @"zoomLevel", @"direction", nil];
}
- (MGLMapCamera *)camera {
CGFloat pitch = _mbglMap->getPitch();
CLLocationDistance altitude = MGLAltitudeForZoomLevel(self.zoomLevel, pitch,
self.centerCoordinate.latitude,
self.frame.size);
return [MGLMapCamera cameraLookingAtCenterCoordinate:self.centerCoordinate
fromDistance:altitude
pitch:pitch
heading:self.direction];
}
- (void)setCamera:(MGLMapCamera *)camera {
[self setCamera:camera animated:NO];
}
- (void)setCamera:(MGLMapCamera *)camera animated:(BOOL)animated {
[self setCamera:camera withDuration:animated ? MGLAnimationDuration : 0 animationTimingFunction:nil completionHandler:NULL];
}
- (void)setCamera:(MGLMapCamera *)camera withDuration:(NSTimeInterval)duration animationTimingFunction:(nullable CAMediaTimingFunction *)function completionHandler:(nullable void (^)(void))completion {
_mbglMap->cancelTransitions();
if ([self.camera isEqual:camera]) {
return;
}
mbgl::CameraOptions cameraOptions = [self cameraOptionsObjectForAnimatingToCamera:camera];
mbgl::AnimationOptions animationOptions;
if (duration > 0) {
animationOptions.duration = MGLDurationInSeconds(duration);
animationOptions.easing = MGLUnitBezierForMediaTimingFunction(function);
}
if (completion) {
animationOptions.transitionFinishFn = [completion]() {
// Must run asynchronously after the transition is completely over.
// Otherwise, a call to -setCamera: within the completion handler
// would reenter the completion handler’s caller.
dispatch_async(dispatch_get_main_queue(), ^{
completion();
});
};
}
[self willChangeValueForKey:@"camera"];
_mbglMap->easeTo(cameraOptions, animationOptions);
[self didChangeValueForKey:@"camera"];
}
- (void)flyToCamera:(MGLMapCamera *)camera completionHandler:(nullable void (^)(void))completion {
[self flyToCamera:camera withDuration:-1 completionHandler:completion];
}
- (void)flyToCamera:(MGLMapCamera *)camera withDuration:(NSTimeInterval)duration completionHandler:(nullable void (^)(void))completion {
[self flyToCamera:camera withDuration:duration peakAltitude:-1 completionHandler:completion];