Andrea Busi
77 lines
2.3 KiB
Swift
77 lines
2.3 KiB
Swift
//
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// EQNBlurredCloseButton.swift
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// Earthquake Network
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//
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// Created by Andrea Busi on 07/03/21.
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// Copyright © 2021 Earthquake Network. All rights reserved.
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//
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import Foundation
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import UIKit
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class EQNBlurredCloseButton: UIButton {
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// MARK: - Init
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convenience init() {
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self.init(type: .custom)
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setupUI()
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}
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override func awakeFromNib() {
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super.awakeFromNib()
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setupUI()
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}
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// MARK: - Private
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private func setupUI() {
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layer.masksToBounds = true
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titleLabel?.font = UIFont.monospacedDigitSystemFont(ofSize: 16.0, weight: .medium)
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setTitle("X", for: .normal)
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addBlurEffect(style: .extraLight)
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}
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private func addBlurEffect(style: UIBlurEffect.Style = .regular) {
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backgroundColor = .clear
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let blurView = UIVisualEffectView(effect: UIBlurEffect(style: style))
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blurView.isUserInteractionEnabled = false
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blurView.backgroundColor = UIColor.lightGray.withAlphaComponent(0.6)
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insertSubview(blurView, at: 0)
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blurView.translatesAutoresizingMaskIntoConstraints = false
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leadingAnchor.constraint(equalTo: blurView.leadingAnchor).isActive = true
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trailingAnchor.constraint(equalTo: blurView.trailingAnchor).isActive = true
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topAnchor.constraint(equalTo: blurView.topAnchor).isActive = true
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bottomAnchor.constraint(equalTo: blurView.bottomAnchor).isActive = true
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if let imageView = self.imageView {
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imageView.backgroundColor = .clear
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bringSubviewToFront(imageView)
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}
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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// force the button to be circle
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layer.cornerRadius = frame.height / 2.0
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}
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// MARK: - Public
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/// Add constaints to show the button on the upper right corner
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func addDefaultConstraint(to view: UIView) {
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trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -10.0).isActive = true
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topAnchor.constraint(equalTo: view.topAnchor, constant: 10.0).isActive = true
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widthAnchor.constraint(equalTo: heightAnchor).isActive = true
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heightAnchor.constraint(equalToConstant: 34.0).isActive = true
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}
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}
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