element-ios/Riot/Modules/Common/ActivityIndicator/UIKit/LabelledActivityIndicatorVi...

92 lines
3.2 KiB
Swift

//
// Copyright 2021-2024 New Vector Ltd.
//
// SPDX-License-Identifier: AGPL-3.0-only
// Please see LICENSE in the repository root for full details.
//
import Foundation
import UIKit
import MatrixSDK
final class LabelledActivityIndicatorView: UIView, Themable {
private enum Constants {
static let padding = UIEdgeInsets(top: 20, left: 40, bottom: 15, right: 40)
static let activityIndicatorScale = CGFloat(1.5)
static let cornerRadius: CGFloat = 12.0
static let stackBackgroundOpacity: CGFloat = 0.9
static let stackSpacing: CGFloat = 15
static let backgroundOpacity: CGFloat = 0.5
}
private let stackBackgroundView: UIView = {
let view = UIView()
view.layer.cornerRadius = Constants.cornerRadius
view.alpha = Constants.stackBackgroundOpacity
return view
}()
private let stackView: UIStackView = {
let stack = UIStackView()
stack.axis = .vertical
stack.distribution = .fill
stack.alignment = .center
stack.spacing = Constants.stackSpacing
return stack
}()
private let activityIndicator: UIActivityIndicatorView = {
let view = UIActivityIndicatorView()
view.transform = .init(scaleX: Constants.activityIndicatorScale, y: Constants.activityIndicatorScale)
view.startAnimating()
return view
}()
private let label: UILabel = {
return UILabel()
}()
init(text: String) {
super.init(frame: .zero)
setup(text: text)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func setup(text: String) {
setupStackView()
label.text = text
}
private func setupStackView() {
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
stackView.centerXAnchor.constraint(equalTo: centerXAnchor),
stackView.centerYAnchor.constraint(equalTo: centerYAnchor)
])
stackView.addArrangedSubview(activityIndicator)
stackView.addArrangedSubview(label)
insertSubview(stackBackgroundView, belowSubview: stackView)
stackBackgroundView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
stackBackgroundView.topAnchor.constraint(equalTo: stackView.topAnchor, constant: -Constants.padding.top),
stackBackgroundView.bottomAnchor.constraint(equalTo: stackView.bottomAnchor, constant: Constants.padding.bottom),
stackBackgroundView.leadingAnchor.constraint(equalTo: stackView.leadingAnchor, constant: -Constants.padding.left),
stackBackgroundView.trailingAnchor.constraint(equalTo: stackView.trailingAnchor, constant: Constants.padding.right)
])
}
func update(theme: Theme) {
backgroundColor = theme.colors.primaryContent.withAlphaComponent(Constants.backgroundOpacity)
stackBackgroundView.backgroundColor = theme.colors.system
activityIndicator.color = theme.colors.secondaryContent
label.font = theme.fonts.calloutSB
label.textColor = theme.colors.secondaryContent
}
}