Using SwiftUI or UIKit to position view elements? - swift

Question

This is more or less a repost of a question that I think could have been reproduced more minimally. I'm trying to form a text bubble using the triangle created by the overriden draw() function and the rest of the callout. I removed all the code that couldn't possibly affect the positioning of either the triangle or the box.
Recap: I'd like to move the triangle created by the draw function outside of the frame created in the initialization (Currently, it's inside the frame).
If I can add anything to clarify or make this question better, let me know.
class CustomCalloutView: UIView, MGLCalloutView {
let dismissesAutomatically: Bool = false
let isAnchoredToAnnotation: Bool = true
let tipHeight: CGFloat = 10.0
let tipWidth: CGFloat = 20.0
lazy var leftAccessoryView = UIView()
lazy var rightAccessoryView = UIView()
weak var delegate: MGLCalloutViewDelegate?
//MARK: Subviews -
required init() {
// init with 75% of width and 120px tall
super.init(frame: CGRect(origin: CGPoint(x: 0, y: 0), size: CGSize(width:
UIScreen.main.bounds.width * 0.75, height: 120)))
setup()
}
override var center: CGPoint {
set {
var newCenter = newValue
newCenter.y -= bounds.midY
super.center = newCenter
}
get {
return super.center
}
}
func setup() {
// setup this view's properties
self.backgroundColor = UIColor.white
}
func presentCallout(from rect: CGRect, in view: UIView, constrainedTo constrainedRect: CGRect,
animated: Bool) {
//Always, Slightly above center
self.center = view.center.applying(CGAffineTransform(translationX: 0, y: -self.frame.height))
view.addSubview(self)
}
override func draw(_ rect: CGRect) {
// Draw the pointed tip at the bottom.
let fillColor: UIColor = .black
let tipLeft = rect.origin.x + (rect.size.width / 2.0) - (tipWidth / 2.0)
let tipBottom = CGPoint(x: rect.origin.x + (rect.size.width / 2.0), y: rect.origin.y +
rect.size.height)
let heightWithoutTip = rect.size.height - tipHeight - 1
let currentContext = UIGraphicsGetCurrentContext()!
let tipPath = CGMutablePath()
tipPath.move(to: CGPoint(x: tipLeft, y: heightWithoutTip))
tipPath.addLine(to: CGPoint(x: tipBottom.x, y: tipBottom.y))
tipPath.addLine(to: CGPoint(x: tipLeft + tipWidth, y: heightWithoutTip))
tipPath.closeSubpath()
fillColor.setFill()
currentContext.addPath(tipPath)
currentContext.fillPath()
}
}