forked from zelo72/mastodon-ios
86 lines
3.1 KiB
Swift
86 lines
3.1 KiB
Swift
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// NotificationAvatarButton.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-7-21.
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//
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import UIKit
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import FLAnimatedImage
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final class NotificationAvatarButton: AvatarButton {
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// Size fixed
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static let containerSize = CGSize(width: 35, height: 35)
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static let badgeImageViewSize = CGSize(width: 24, height: 24)
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static let badgeImageMaskSize = CGSize(width: badgeImageViewSize.width + 4, height: badgeImageViewSize.height + 4)
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let badgeImageView: UIImageView = {
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let imageView = RoundedImageView()
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imageView.contentMode = .center
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imageView.isOpaque = true
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imageView.layer.shouldRasterize = true
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imageView.layer.rasterizationScale = UIScreen.main.scale
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return imageView
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}()
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override func _init() {
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super._init()
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avatarImageSize = CGSize(width: 35, height: 35)
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let path: CGPath = {
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let path = CGMutablePath()
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path.addRect(CGRect(origin: .zero, size: NotificationAvatarButton.containerSize))
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let x: CGFloat = {
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if UIApplication.shared.userInterfaceLayoutDirection == .rightToLeft {
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return -0.5 * NotificationAvatarButton.badgeImageMaskSize.width
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} else {
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return NotificationAvatarButton.containerSize.width - 0.5 * NotificationAvatarButton.badgeImageMaskSize.width
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}
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}()
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path.addPath(UIBezierPath(
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ovalIn: CGRect(
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x: x,
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y: NotificationAvatarButton.containerSize.height - 0.5 * NotificationAvatarButton.badgeImageMaskSize.width,
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width: NotificationAvatarButton.badgeImageMaskSize.width,
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height: NotificationAvatarButton.badgeImageMaskSize.height
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)
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).cgPath)
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return path
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}()
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let maskShapeLayer = CAShapeLayer()
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maskShapeLayer.backgroundColor = UIColor.black.cgColor
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maskShapeLayer.fillRule = .evenOdd
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maskShapeLayer.path = path
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avatarImageView.layer.mask = maskShapeLayer
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badgeImageView.translatesAutoresizingMaskIntoConstraints = false
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addSubview(badgeImageView)
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NSLayoutConstraint.activate([
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badgeImageView.centerXAnchor.constraint(equalTo: trailingAnchor),
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badgeImageView.centerYAnchor.constraint(equalTo: bottomAnchor),
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badgeImageView.widthAnchor.constraint(equalToConstant: NotificationAvatarButton.badgeImageViewSize.width).priority(.required - 1),
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badgeImageView.heightAnchor.constraint(equalToConstant: NotificationAvatarButton.badgeImageViewSize.height).priority(.required - 1),
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])
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}
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override func updateAppearance() {
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super.updateAppearance()
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badgeImageView.alpha = primaryActionState.contains(.highlighted) ? 0.6 : 1.0
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}
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}
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final class RoundedImageView: UIImageView {
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override func layoutSubviews() {
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super.layoutSubviews()
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layer.masksToBounds = true
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layer.cornerRadius = bounds.width / 2
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layer.cornerCurve = .circular
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}
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}
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