113 lines
3.0 KiB
Objective-C
113 lines
3.0 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTMap.h"
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#import "RCTConvert.h"
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#import "RCTEventDispatcher.h"
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#import "RCTLog.h"
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#import "RCTUtils.h"
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const CLLocationDegrees RCTMapDefaultSpan = 0.005;
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const NSTimeInterval RCTMapRegionChangeObserveInterval = 0.1;
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const CGFloat RCTMapZoomBoundBuffer = 0.01;
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@implementation RCTMap
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{
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UIView *_legalLabel;
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CLLocationManager *_locationManager;
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}
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- (instancetype)init
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{
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if ((self = [super init])) {
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// Find Apple link label
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for (UIView *subview in self.subviews) {
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if ([NSStringFromClass(subview.class) isEqualToString:@"MKAttributionLabel"]) {
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// This check is super hacky, but the whole premise of moving around Apple's internal subviews is super hacky
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_legalLabel = subview;
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break;
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}
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}
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}
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return self;
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}
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- (void)dealloc
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{
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[_regionChangeObserveTimer invalidate];
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}
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- (void)layoutSubviews
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{
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[super layoutSubviews];
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// Force resize subviews - only the layer is resized by default
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CGRect mapFrame = self.frame;
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self.frame = CGRectZero;
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self.frame = mapFrame;
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if (_legalLabel) {
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dispatch_async(dispatch_get_main_queue(), ^{
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CGRect frame = _legalLabel.frame;
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if (_legalLabelInsets.left) {
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frame.origin.x = _legalLabelInsets.left;
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} else if (_legalLabelInsets.right) {
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frame.origin.x = mapFrame.size.width - _legalLabelInsets.right - frame.size.width;
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}
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if (_legalLabelInsets.top) {
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frame.origin.y = _legalLabelInsets.top;
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} else if (_legalLabelInsets.bottom) {
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frame.origin.y = mapFrame.size.height - _legalLabelInsets.bottom - frame.size.height;
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}
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_legalLabel.frame = frame;
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});
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}
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}
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#pragma mark Accessors
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- (void)setShowsUserLocation:(BOOL)showsUserLocation
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{
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if (self.showsUserLocation != showsUserLocation) {
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if (showsUserLocation && !_locationManager) {
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_locationManager = [[CLLocationManager alloc] init];
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if ([_locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
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[_locationManager requestWhenInUseAuthorization];
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}
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}
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[super setShowsUserLocation:showsUserLocation];
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// If it needs to show user location, force map view centered
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// on user's current location on user location updates
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self.followUserLocation = showsUserLocation;
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}
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}
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- (void)setRegion:(MKCoordinateRegion)region
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{
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// If location is invalid, abort
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if (!CLLocationCoordinate2DIsValid(region.center)) {
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return;
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}
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// If new span values are nil, use old values instead
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if (!region.span.latitudeDelta) {
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region.span.latitudeDelta = self.region.span.latitudeDelta;
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}
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if (!region.span.longitudeDelta) {
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region.span.longitudeDelta = self.region.span.longitudeDelta;
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}
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// Animate to new position
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[super setRegion:region animated:YES];
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}
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@end
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