75 lines
2.0 KiB
Swift
75 lines
2.0 KiB
Swift
//
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// PollOptionCheckboxView.swift
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// Tusker
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//
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// Created by Shadowfacts on 4/25/21.
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// Copyright © 2021 Shadowfacts. All rights reserved.
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//
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import UIKit
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class PollOptionCheckboxView: UIView {
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var isChecked: Bool = false {
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didSet {
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updateStyle()
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}
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}
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var readOnly: Bool = true {
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didSet {
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updateStyle()
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}
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}
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var voted: Bool = false {
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didSet {
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updateStyle()
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}
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}
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private let imageView: UIImageView
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init(multiple: Bool) {
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imageView = UIImageView(image: UIImage(systemName: "checkmark")!)
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super.init(frame: .zero)
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let size: CGFloat = 20
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layer.cornerRadius = (multiple ? 0.1 : 0.5) * size
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layer.borderWidth = 2
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imageView.translatesAutoresizingMaskIntoConstraints = false
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imageView.isHidden = true
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addSubview(imageView)
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updateStyle()
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NSLayoutConstraint.activate([
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widthAnchor.constraint(equalTo: heightAnchor),
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widthAnchor.constraint(equalToConstant: size),
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imageView.widthAnchor.constraint(equalTo: widthAnchor, constant: -3),
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imageView.heightAnchor.constraint(equalTo: heightAnchor, constant: -3),
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imageView.centerXAnchor.constraint(equalTo: centerXAnchor),
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imageView.centerYAnchor.constraint(equalTo: centerYAnchor),
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])
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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private func updateStyle() {
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imageView.isHidden = !isChecked
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if voted || readOnly {
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layer.borderColor = UIColor.clear.cgColor
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} else if isChecked {
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layer.borderColor = tintColor.cgColor
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} else {
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layer.borderColor = UIColor.gray.cgColor
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}
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backgroundColor = isChecked && !voted ? tintColor : .clear
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imageView.tintColor = voted ? .black : .white
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}
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}
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