1 files changed, 95 insertions, 0 deletions
diff --git a/platform/ios/app/MBXCustomCalloutView.m b/platform/ios/app/MBXCustomCalloutView.m
new file mode 100644
index 0000000000..8f9bd8ed40
--- /dev/null
+++ b/platform/ios/app/MBXCustomCalloutView.m
@@ -0,0 +1,95 @@
+#import "MBXCustomCalloutView.h"
+
+static CGFloat const tipHeight = 10.0;
+static CGFloat const tipWidth = 10.0;
+
+@interface MBXCustomCalloutView ()
+
+@property (strong, nonatomic) UILabel *mainLabel;
+
+@end
+
+@implementation MBXCustomCalloutView {
+    id <MGLAnnotation> _representedObject;
+    UIView *_leftAccessoryView;
+    UIView *_rightAccessoryView;
+    __weak id <MGLCalloutViewDelegate> _delegate;
+}
+
+@synthesize representedObject = _representedObject;
+@synthesize leftAccessoryView = _leftAccessoryView;
+@synthesize rightAccessoryView = _rightAccessoryView;
+@synthesize delegate = _delegate;
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self)
+    {
+        self.backgroundColor = [UIColor clearColor];
+        _mainLabel = [[UILabel alloc] initWithFrame: CGRectZero];
+        _mainLabel.backgroundColor = [UIColor clearColor];
+        
+        [self addSubview: _mainLabel];
+    }
+    return self;
+}
+
+
+#pragma mark - API
+
+- (void)presentCalloutFromRect:(CGRect)rect inView:(UIView *)view constrainedToView:(UIView *)constrainedView animated:(BOOL)animated
+{
+    [view addSubview:self];
+    // prepare title label
+    if ([self.representedObject respondsToSelector:@selector(title)])
+    {
+        self.mainLabel.text = self.representedObject.title;
+        [self.mainLabel sizeToFit];
+    }
+    // prepare our frame
+    CGFloat frameWidth = self.mainLabel.bounds.size.width;
+    CGFloat frameHeight = self.mainLabel.bounds.size.height * 2.0;
+    CGFloat frameOriginX = rect.origin.x + (rect.size.width/2.0) - (frameWidth/2.0);
+    CGFloat frameOriginY = rect.origin.y - frameHeight;
+    self.frame = CGRectMake(frameOriginX, frameOriginY,
+                            frameWidth, frameHeight);
+}
+
+- (void)dismissCalloutAnimated:(BOOL)animated
+{
+    if (self.superview)
+        [self removeFromSuperview];
+}
+
+#pragma mark - internals
+
+- (void)drawRect:(CGRect)rect
+{
+    UIColor *fillColor = [UIColor colorWithWhite:0.7 alpha:1.0];
+    
+    CGFloat tipLeft = rect.origin.x + (rect.size.width / 2.0) - (tipWidth / 2.0);
+    CGPoint tipBottom = CGPointMake(rect.origin.x + (rect.size.width / 2.0), rect.origin.y +rect.size.height);
+    CGFloat heightWithoutTip = rect.size.height - tipHeight;
+    
+    // draw the white background with tip
+    CGContextRef ctxt = UIGraphicsGetCurrentContext();
+    
+    CGMutablePathRef tipPath = CGPathCreateMutable();
+    CGPathMoveToPoint(tipPath, NULL, 0, 0);
+    CGPathAddLineToPoint(tipPath, NULL, 0, heightWithoutTip);
+    CGPathAddLineToPoint(tipPath, NULL, tipLeft, heightWithoutTip);
+    CGPathAddLineToPoint(tipPath, NULL, tipBottom.x, tipBottom.y);
+    CGPathAddLineToPoint(tipPath, NULL, tipLeft + tipWidth, heightWithoutTip);
+    CGPathAddLineToPoint(tipPath, NULL, CGRectGetWidth(rect), heightWithoutTip);
+    CGPathAddLineToPoint(tipPath, NULL, CGRectGetWidth(rect), 0);
+    CGPathCloseSubpath(tipPath);
+    
+    [fillColor setFill];
+    CGContextAddPath(ctxt, tipPath);
+    CGContextFillPath(ctxt);
+    CGPathRelease(tipPath);
+}
+
+
+@end