erpsuiteios/Apex Mobile/Apex Mobile/AMAnnotationView.m

//
//  AMAnnotationView.m
//  Apex Mobile
//
//  Created by Jack on 2018/5/3.
//  Copyright © 2018年 United Software Applications, Inc. All rights reserved.
//

#import "AMAnnotationView.h"
#import "AMMapAnnotaion.h"

@interface AMAnnotationView ()

@property (strong,nonatomic) UIView *calloutView;
@property (strong,nonatomic) AMMapAnnotaion *myAnnotation;
@property (nonatomic,strong) UILabel *titleLabel;
@property (nonatomic,strong) UILabel *detailLabel;
@property (nonatomic,assign) BOOL tapedCallout;

@end

@implementation AMAnnotationView

- (instancetype)initWithAnnotation:(id<MKAnnotation>)annotation reuseIdentifier:(NSString *)reuseIdentifier {
    
    if (self = [super initWithAnnotation:annotation reuseIdentifier:reuseIdentifier]) {
        
        self.opaque = NO;
        self.canShowCallout = NO;

        self.myAnnotation = (AMMapAnnotaion *)annotation;
        self.calloutView = [[UIView alloc] init];
        self.calloutView.backgroundColor = [UIColor whiteColor];
    }
    return self;
}

- (UILabel *)titleLabel {
    if (!_titleLabel) {
        _titleLabel = [[UILabel alloc] init];
        _titleLabel.font = [UIFont boldSystemFontOfSize:16.0f];
        _titleLabel.textColor = [UIColor blackColor];
        _titleLabel.textAlignment = NSTextAlignmentLeft;
        _titleLabel.lineBreakMode = NSLineBreakByTruncatingTail;
        _titleLabel.numberOfLines = 1;
    }
    return _titleLabel;
}

- (UILabel *)detailLabel {
    if (!_detailLabel) {
        _detailLabel = [[UILabel alloc] init];
        _detailLabel.font = [UIFont systemFontOfSize:14.0f];
        _detailLabel.textColor = [UIColor blackColor];
        _detailLabel.textAlignment = NSTextAlignmentLeft;
        _detailLabel.lineBreakMode = NSLineBreakByTruncatingTail;
        _detailLabel.numberOfLines = 0;
    }
    return _detailLabel;
}

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
    
    UIView *hitView = [super hitTest:point withEvent:event];
    self.tapedCallout = NO;
    if (self.isSelected) {

        if (hitView) {
//            self.canDeselected = NO;
            return self;
        }

        if (CGRectContainsPoint(self.calloutView.frame, point)) {
//            hitView = self.calloutView;
            self.tapedCallout = YES;

            return self.calloutView;
        }

    }

    return hitView;
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    if (self.isSelected && self.tapedCallout) {
        if (self.delegate && [self.delegate respondsToSelector:@selector(mapView:didTapAnnotaionCallout:)]) {
            [self.delegate mapView:[self findMap:self] didTapAnnotaionCallout:self.myAnnotation];
        }
    }
    [super setSelected:selected animated:YES];

    // Get the custom callout view.
    UIView *calloutView = self.calloutView;
    if (selected) {

        NSString *title = self.myAnnotation.title;
        NSString *detail = self.myAnnotation.subtitle;

        CGFloat maxWidth = [UIScreen mainScreen].bounds.size.width * 0.8f;

        CGFloat w0 = maxWidth;

        CGRect frame = CGRectZero;
        self.titleLabel.text = title;
        [self.titleLabel sizeToFit];
        frame = self.titleLabel.bounds;
        frame.origin = CGPointMake(5, 5);
        w0 = CGRectGetWidth(frame);
        if (w0 > maxWidth) {
            w0 = maxWidth;
            frame.size.width = w0;
        }
        self.titleLabel.frame = frame;
        [self.calloutView addSubview:self.titleLabel];

        CGFloat w1 = maxWidth;
        self.detailLabel.text = detail;
        [self.detailLabel sizeToFit];
        frame.origin.y = CGRectGetMaxY(frame) + 5;
        frame.size = self.detailLabel.bounds.size;
        w1 = CGRectGetWidth(frame);
        if (w1 > maxWidth) {
            w1 = maxWidth;
            frame.size.width = w1;
        }
        self.detailLabel.frame = frame;
        [self.calloutView addSubview:self.detailLabel];

        CGFloat h = CGRectGetMaxY(frame) + 5 + 10;

        MKMapView *map = [self findMap:self];

//        frame = self.frame;
//
//        // 将左右边距小于30的移动30
//        if (frame.origin.x < 30) {
//
//            if (map != nil) {
//                MKCoordinateRegion region = map.region;
//                CGPoint center = map.center;
//                center.x -= 30;
//                region.center = [map convertPoint:center toCoordinateFromView:map];
//                [map setRegion:region animated:NO];
//            }
//        }
//        if (CGRectGetMaxX(frame) > CGRectGetWidth(map.bounds) - 30) {
//            if (map != nil) {
//                MKCoordinateRegion region = map.region;
//                CGPoint center = map.center;
//                center.x += 30;
//                region.center = [map convertPoint:center toCoordinateFromView:map];
//                [map setRegion:region animated:NO];
//            }
//
//        }
//
//        if (CGRectGetMinY(frame) < h) {
//            if (map != nil) {
//
//                MKCoordinateRegion region = map.region;
//                CGPoint center = map.center;
//                center.y += h + CGRectGetHeight(frame);
//                region.center = [map convertPoint:center toCoordinateFromView:map];
//                [map setRegion:region animated:NO];
//
//            }
//        }

        CGPoint center = self.center;
        MKCoordinateRegion region = map.region;
        region.center = [map convertPoint:center toCoordinateFromView:map];
        [map setRegion:region animated:NO];

        frame = self.frame;


        CGFloat w = MAX(w0, w1) + 5 * 2;

        self.calloutView.frame = CGRectMake((CGRectGetWidth(frame) - w) * 0.5, -h, w, h);

        UIBezierPath *path = [self pathForCalloutWithWidth:w Height:h Anchor:CGPointMake(w * 0.5, h)];

        CAShapeLayer *mask = [CAShapeLayer layer];
        mask.fillColor = [UIColor blackColor].CGColor;
        mask.shadowColor = [UIColor blackColor].CGColor;
        mask.shadowOffset = CGSizeMake(2, 2);
        mask.path = path.CGPath;
        self.calloutView.layer.mask = mask;

        [self addSubview:calloutView];
    } else {
        [calloutView removeFromSuperview];
    }
}

- (MKMapView *)findMap:(UIView *)view {
    if (view == nil) {
        return nil;
    }
    if (view.superview == nil) {
        if ([view isKindOfClass:[MKMapView class]]) {
            return (MKMapView *)view;
        } else {
            return nil;
        }
    }
    if (view.superview && [view.superview isKindOfClass:[MKMapView class]]) {
        return (MKMapView *)view.superview;
    } else {
        return [self findMap:view.superview];
    }
}

- (UIBezierPath *)pathForCalloutWithWidth:(CGFloat)w Height:(CGFloat)h Anchor:(CGPoint)anchor {
    
    UIBezierPath *path = [UIBezierPath bezierPath];
    [path moveToPoint:CGPointMake(w * 0.5, 0)];
    [path addLineToPoint:CGPointMake(w - 5, 0)];
    [path addQuadCurveToPoint:CGPointMake(w, 5) controlPoint:CGPointMake(w, 0)];
    [path addLineToPoint:CGPointMake(w, h - 15)];
    [path addQuadCurveToPoint:CGPointMake(w - 5, h - 10) controlPoint:CGPointMake(w, h - 10)];
    
//    [path addLineToPoint:CGPointMake(anchor.x + 10, h - 10)];
//    [path addQuadCurveToPoint:anchor controlPoint:CGPointMake(anchor.x + 5, h - 10)];
//    [path addQuadCurveToPoint:CGPointMake(anchor.x - 10, h - 10) controlPoint:CGPointMake(anchor.x - 5, h - 10)];
    
    [path addLineToPoint:CGPointMake(anchor.x + 6, h - 10)];
    [path addLineToPoint:anchor];
    [path addLineToPoint:CGPointMake(anchor.x - 6, h - 10)];
    
    [path addLineToPoint:CGPointMake(5, h - 10)];
    [path addQuadCurveToPoint:CGPointMake(0, h - 15) controlPoint:CGPointMake(0, h - 10)];
    [path addLineToPoint:CGPointMake(0, 5)];
    [path addQuadCurveToPoint:CGPointMake(5, 0) controlPoint:CGPointMake(0, 0)];
    [path addLineToPoint:CGPointMake(w * 0.5, 0)];
    return path;
}

@end