Getting trouble when hovering a custom segmented control in swift - swift

Question

I tried to create custom segmented control which should change its look if you are hovering it. But it does not work as I expected.
Here's the code (I am sorry that it is that long but I already made it 200 lines shorter then it was):
class MySegmentedControl: UIView {
var state = MySegmentedControl_State.unknown
var buttons = [MySegmentedControl_ButtonView]()
func setUpView(){
let view = UIView(frame: self.frame)
view.frame.origin.x = 0
view.frame.origin.y = 0
view.addSubview(holderView())
self.addSubview(view)
}
func holderView() -> UIView{
let view = UIView(frame: CGRect(origin: CGPoint(x: 100, y: 0), size: CGSize(width: 490, height: 70)))
view.layer.borderWidth = 5
view.layer.borderColor = UIColor.gray.cgColor
view.layer.cornerRadius = view.frame.height / 2
view.layer.masksToBounds = true
view.clipsToBounds = true
view.backgroundColor = #colorLiteral(red: 0.5741485357, green: 0.5741624236, blue: 0.574154973, alpha: 1)
//place the first button
let button_1 = MySegmentedControl_ButtonView(text: "One", frame: CGRect(x: 0, y: 0, width: 163.3333, height: 70), type: .one, delegate: self)
//place the second Button
let button_2 = MySegmentedControl_ButtonView(text: "Two", frame: CGRect(x: 163.3333, y: 0, width: 163.3333, height: 70), type: .two, delegate: self)
//place the third Button
let button_3 = MySegmentedControl_ButtonView(text: "Three", frame: CGRect(x: 163.3333*2, y: 0, width: 163.3333, height: 70), type: .three, delegate: self)
buttons.append(button_1); buttons.append(button_2); buttons.append(button_3)
view.addSubview(button_1)
view.addSubview(button_2)
view.addSubview(button_3)
return view
}
class MySegmentedControl_ButtonView: UIView{
private var selected = false
private var hovering = false
var text = ""
private var type: MySegmentedControl_State
private var delegate: MySegmentedControl_ButtonView_Delegate
private var label = UILabel()
func setUpView(){
layer.cornerRadius = frame.height/2
let label = UILabel(frame: frame)
self.label = label
label.tintColor = .white
label.text = text
label.sizeToFit()
label.center = self.center
label.font = label.font.withSize(15)
let regionizer = UIHoverGestureRecognizer(target: self, action: #selector(didHover(_:)))
addGestureRecognizer(regionizer)
addSubview(label)
//set up the button
let button = UIButton(frame: bounds, primaryAction: UIAction(handler: { [self] action in
selected = true
delegate.shouldChangeState(to: type)
delegate.shouldDeselectOthers(without: text)
if !hovering{
backgroundColor = #colorLiteral(red: 0.9961533629, green: 0.9931518435, blue: 1, alpha: 0.8)
}else{
self.backgroundColor = #colorLiteral(red: 0.7540688515, green: 0.7540867925, blue: 0.7540771365, alpha: 0.9435433103)
}
}))
addSubview(button)
}
func deselect(){
self.selected = false
if hovering{
backgroundColor = #colorLiteral(red: 0.7540688515, green: 0.7540867925, blue: 0.7540771365, alpha: 0.15)
UIView.animate(withDuration: 0.2) {[self]in
label.frame.origin.y = 10
label.font = label.font.withSize(12)
}
}else{
backgroundColor = #colorLiteral(red: 0.2605174184, green: 0.2605243921, blue: 0.260515637, alpha: 0.15)
UIView.animate(withDuration: 0.2) {[self]in
label.frame.origin.y = 10
label.font = label.font.withSize(12)
}
}
}
#objc
func didHover(_ recognizer: UIHoverGestureRecognizer){
switch recognizer.state{
case .began, .changed:
hovering = true
if selected{
backgroundColor = #colorLiteral(red: 0.7540688515, green: 0.7540867925, blue: 0.7540771365, alpha: 0.15)
UIView.animate(withDuration: 0.2) {[self]in
label.frame.origin.y = 10
label.font = label.font.withSize(12)
}
}else{
backgroundColor = #colorLiteral(red: 0.2605174184, green: 0.2605243921, blue: 0.260515637, alpha: 0.15)
UIView.animate(withDuration: 0.2) {[self]in
label.frame.origin.y = 10
label.font = label.font.withSize(12)
}
}
case .ended:
hovering = false
if selected{
self.backgroundColor = #colorLiteral(red: 0.9961533629, green: 0.9931518435, blue: 1, alpha: 0.2)
UIView.animate(withDuration: 0.2) {[self]in
label.center.y = center.y
label.font = label.font.withSize(15)
}
}else{
self.backgroundColor = .clear
UIView.animate(withDuration: 0.2) {[self]in
label.center.y = center.y
label.font = label.font.withSize(15)
}
}
default:break
}
}
init(text: String, frame: CGRect, type: MySegmentedControl_State, delegate: MySegmentedControl_ButtonView_Delegate){
self.type = type
self.delegate = delegate
super.init(frame: frame)
self.text = text
setUpView()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
}
extension MySegmentedControl: MySegmentedControl_ButtonView_Delegate{
func shouldDeselectOthers(without: String) {
for button in buttons{
if button.text != without{
button.deselect()
}
}
}
func shouldChangeState(to state: MySegmentedControl_State) {
self.state = state
}
}
protocol MySegmentedControl_ButtonView_Delegate{
func shouldDeselectOthers(without: String)
func shouldChangeState(to state: MySegmentedControl_State)
}
enum MySegmentedControl_State: String{
case unknown = "Non specific case avalaible"
case one = "One selected"
case two = "Two selected"
case three = "Three selected"
}
But the second of my buttons is displayed as the third and the the third does not get displayed, but if I hover the place where button two SHOULD be, it still gets hovered.
Here is a shout video:
Video showing problems with this code
My App is running on MacOS with MacCatalyst

Answer 1

In setUpView() inside class MySegmentedControl_ButtonView, you are trying to set the label's position with:
label.center = self.center
However, self.center is relative to self's superview. So your labels are being shifted.
If you change that line to:
label.center = CGPoint(x: self.bounds.midX, y: self.bounds.midY)
the label centering will be correct.
As I asked in my comment though... why aren't you using auto-layout? It would make things much easier (and much more flexible).