131 lines
5.4 KiB
Swift
131 lines
5.4 KiB
Swift
//
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// AvatarConfigurableView.swift
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// Mastodon
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//
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// Created by Cirno MainasuK on 2021-2-4.
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//
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import UIKit
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import AlamofireImage
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import Kingfisher
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protocol AvatarConfigurableView {
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static var configurableAvatarImageSize: CGSize { get }
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static var configurableAvatarImageCornerRadius: CGFloat { get }
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var configurableAvatarImageView: UIImageView? { get }
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var configurableAvatarButton: UIButton? { get }
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func configure(with configuration: AvatarConfigurableViewConfiguration)
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func avatarConfigurableView(_ avatarConfigurableView: AvatarConfigurableView, didFinishConfiguration configuration: AvatarConfigurableViewConfiguration)
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}
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extension AvatarConfigurableView {
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public func configure(with configuration: AvatarConfigurableViewConfiguration) {
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let placeholderImage: UIImage = {
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let placeholderImage = configuration.placeholderImage ?? UIImage.placeholder(size: Self.configurableAvatarImageSize, color: .systemFill)
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if Self.configurableAvatarImageCornerRadius < Self.configurableAvatarImageSize.width * 0.5 {
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return placeholderImage
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.af.imageAspectScaled(toFill: Self.configurableAvatarImageSize)
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.af.imageRounded(withCornerRadius: 4, divideRadiusByImageScale: true)
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} else {
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return placeholderImage.af.imageRoundedIntoCircle()
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}
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}()
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// cancel previous task
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configurableAvatarImageView?.af.cancelImageRequest()
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configurableAvatarImageView?.kf.cancelDownloadTask()
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configurableAvatarButton?.af.cancelImageRequest(for: .normal)
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configurableAvatarButton?.kf.cancelImageDownloadTask()
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// reset layer attributes
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configurableAvatarImageView?.layer.masksToBounds = false
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configurableAvatarImageView?.layer.cornerRadius = 0
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configurableAvatarImageView?.layer.cornerCurve = .circular
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configurableAvatarButton?.layer.masksToBounds = false
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configurableAvatarButton?.layer.cornerRadius = 0
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configurableAvatarButton?.layer.cornerCurve = .circular
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defer {
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avatarConfigurableView(self, didFinishConfiguration: configuration)
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}
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// set placeholder if no asset
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guard let avatarImageURL = configuration.avatarImageURL else {
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configurableAvatarImageView?.image = placeholderImage
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configurableAvatarButton?.setImage(placeholderImage, for: .normal)
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return
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}
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if let avatarImageView = configurableAvatarImageView {
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// set avatar (GIF using Kingfisher)
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switch avatarImageURL.pathExtension {
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case "gif":
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avatarImageView.kf.setImage(
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with: avatarImageURL,
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placeholder: placeholderImage,
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options: [
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.transition(.fade(0.2))
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]
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)
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avatarImageView.layer.masksToBounds = true
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avatarImageView.layer.cornerRadius = Self.configurableAvatarImageCornerRadius
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avatarImageView.layer.cornerCurve = Self.configurableAvatarImageCornerRadius < Self.configurableAvatarImageSize.width * 0.5 ? .continuous :.circular
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default:
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let filter = ScaledToSizeWithRoundedCornersFilter(size: Self.configurableAvatarImageSize, radius: Self.configurableAvatarImageCornerRadius)
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avatarImageView.af.setImage(
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withURL: avatarImageURL,
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placeholderImage: placeholderImage,
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filter: filter,
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imageTransition: .crossDissolve(0.3),
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runImageTransitionIfCached: false,
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completion: nil
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)
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}
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}
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if let avatarButton = configurableAvatarButton {
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switch avatarImageURL.pathExtension {
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case "gif":
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avatarButton.kf.setImage(
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with: avatarImageURL,
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for: .normal,
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placeholder: placeholderImage,
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options: [
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.transition(.fade(0.2))
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]
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)
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avatarButton.layer.masksToBounds = true
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avatarButton.layer.cornerRadius = Self.configurableAvatarImageCornerRadius
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avatarButton.layer.cornerCurve = Self.configurableAvatarImageCornerRadius < Self.configurableAvatarImageSize.width * 0.5 ? .continuous : .circular
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default:
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let filter = ScaledToSizeWithRoundedCornersFilter(size: Self.configurableAvatarImageSize, radius: Self.configurableAvatarImageCornerRadius)
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avatarButton.af.setImage(
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for: .normal,
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url: avatarImageURL,
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placeholderImage: placeholderImage,
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filter: filter,
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completion: nil
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)
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}
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}
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}
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func avatarConfigurableView(_ avatarConfigurableView: AvatarConfigurableView, didFinishConfiguration configuration: AvatarConfigurableViewConfiguration) { }
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}
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struct AvatarConfigurableViewConfiguration {
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let avatarImageURL: URL?
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let placeholderImage: UIImage?
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init(avatarImageURL: URL?, placeholderImage: UIImage? = nil) {
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self.avatarImageURL = avatarImageURL
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self.placeholderImage = placeholderImage
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}
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}
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