forked from zelo72/mastodon-ios
147 lines
4.0 KiB
Swift
147 lines
4.0 KiB
Swift
//
|
|
// AvatarButton.swift
|
|
// Mastodon
|
|
//
|
|
// Created by MainasuK Cirno on 2021-7-21.
|
|
//
|
|
|
|
import os.log
|
|
import UIKit
|
|
import MastodonLocalization
|
|
|
|
open class AvatarButton: UIControl {
|
|
|
|
// UIControl.Event - Application: 0x0F000000
|
|
static let primaryAction = UIControl.Event(rawValue: 1 << 25) // 0x01000000
|
|
public var primaryActionState: UIControl.State = .normal
|
|
|
|
public var size = CGSize(width: 46, height: 46)
|
|
public let avatarImageView = AvatarImageView()
|
|
|
|
public override init(frame: CGRect) {
|
|
super.init(frame: frame)
|
|
_init()
|
|
}
|
|
|
|
public required init?(coder: NSCoder) {
|
|
super.init(coder: coder)
|
|
_init()
|
|
}
|
|
|
|
open func _init() {
|
|
avatarImageView.frame = bounds
|
|
avatarImageView.translatesAutoresizingMaskIntoConstraints = false
|
|
addSubview(avatarImageView)
|
|
NSLayoutConstraint.activate([
|
|
avatarImageView.topAnchor.constraint(equalTo: topAnchor),
|
|
avatarImageView.leadingAnchor.constraint(equalTo: leadingAnchor),
|
|
avatarImageView.trailingAnchor.constraint(equalTo: trailingAnchor),
|
|
avatarImageView.bottomAnchor.constraint(equalTo: bottomAnchor),
|
|
])
|
|
|
|
isAccessibilityElement = true
|
|
accessibilityLabel = L10n.Common.Controls.Status.showUserProfile
|
|
}
|
|
|
|
public override func layoutSubviews() {
|
|
super.layoutSubviews()
|
|
|
|
updateAppearance()
|
|
}
|
|
|
|
public override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
|
|
super.traitCollectionDidChange(previousTraitCollection)
|
|
|
|
updateAppearance()
|
|
}
|
|
|
|
open func updateAppearance() {
|
|
avatarImageView.alpha = primaryActionState.contains(.highlighted) ? 0.6 : 1.0
|
|
}
|
|
|
|
}
|
|
|
|
extension AvatarButton {
|
|
|
|
public override var intrinsicContentSize: CGSize {
|
|
return size
|
|
}
|
|
|
|
public override func beginTracking(_ touch: UITouch, with event: UIEvent?) -> Bool {
|
|
defer { updateAppearance() }
|
|
|
|
updateState(touch: touch, event: event)
|
|
return super.beginTracking(touch, with: event)
|
|
}
|
|
|
|
public override func continueTracking(_ touch: UITouch, with event: UIEvent?) -> Bool {
|
|
defer { updateAppearance() }
|
|
|
|
updateState(touch: touch, event: event)
|
|
return super.continueTracking(touch, with: event)
|
|
}
|
|
|
|
public override func endTracking(_ touch: UITouch?, with event: UIEvent?) {
|
|
defer { updateAppearance() }
|
|
resetState()
|
|
|
|
if let touch = touch {
|
|
if AvatarButton.isTouching(touch, view: self, event: event) {
|
|
sendActions(for: AvatarButton.primaryAction)
|
|
} else {
|
|
// do nothing
|
|
}
|
|
}
|
|
|
|
super.endTracking(touch, with: event)
|
|
}
|
|
|
|
public override func cancelTracking(with event: UIEvent?) {
|
|
defer { updateAppearance() }
|
|
|
|
resetState()
|
|
super.cancelTracking(with: event)
|
|
}
|
|
|
|
}
|
|
|
|
extension AvatarButton {
|
|
|
|
private static func isTouching(_ touch: UITouch, view: UIView, event: UIEvent?) -> Bool {
|
|
let location = touch.location(in: view)
|
|
return view.point(inside: location, with: event)
|
|
}
|
|
|
|
private func resetState() {
|
|
primaryActionState = .normal
|
|
}
|
|
|
|
private func updateState(touch: UITouch, event: UIEvent?) {
|
|
primaryActionState = AvatarButton.isTouching(touch, view: self, event: event) ? .highlighted : .normal
|
|
}
|
|
|
|
}
|
|
|
|
#if canImport(SwiftUI) && DEBUG
|
|
import SwiftUI
|
|
|
|
struct AvatarButton_Previews: PreviewProvider {
|
|
|
|
static var previews: some View {
|
|
UIViewPreview(width: 42) {
|
|
let avatarButton = AvatarButton()
|
|
avatarButton.translatesAutoresizingMaskIntoConstraints = false
|
|
NSLayoutConstraint.activate([
|
|
avatarButton.widthAnchor.constraint(equalToConstant: 42),
|
|
avatarButton.heightAnchor.constraint(equalToConstant: 42),
|
|
])
|
|
return avatarButton
|
|
}
|
|
.previewLayout(.fixed(width: 42, height: 42))
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|