74 lines
2.0 KiB
Swift
74 lines
2.0 KiB
Swift
//
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// MediaPreviewTransitionItem.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-4-28.
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//
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import UIKit
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import CoreData
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import MastodonUI
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class MediaPreviewTransitionItem: Identifiable {
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let id: UUID
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let source: Source
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var previewableViewController: MediaPreviewableViewController
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// source
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var image: UIImage?
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var aspectRatio: CGSize?
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var initialFrame: CGRect? = nil
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var sourceImageView: UIImageView?
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var sourceImageViewCornerRadius: CGFloat?
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// target
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var targetFrame: CGRect? = nil
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// transitioning
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var transitionView: UIView?
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var snapshotRaw: UIView?
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var snapshotTransitioning: UIView?
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var touchOffset: CGVector = CGVector.zero
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var interactiveTransitionMaskView: UIView?
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var interactiveTransitionMaskLayer: CAShapeLayer?
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init(
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id: UUID = UUID(),
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source: Source,
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previewableViewController: MediaPreviewableViewController
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) {
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self.id = id
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self.source = source
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self.previewableViewController = previewableViewController
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}
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}
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extension MediaPreviewTransitionItem {
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enum Source {
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case attachment(MediaView)
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case attachments(MediaGridContainerView)
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case profileAvatar(ProfileHeaderView)
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case profileBanner(ProfileHeaderView)
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func updateAppearance(position: UIViewAnimatingPosition, index: Int?) {
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let alpha: CGFloat = position == .end ? 1 : 0
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switch self {
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case .attachment(let mediaView):
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mediaView.alpha = alpha
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case .attachments(let mediaGridContainerView):
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if let index = index {
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mediaGridContainerView.setAlpha(alpha, index: index)
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} else {
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mediaGridContainerView.setAlpha(alpha)
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}
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case .profileAvatar(let profileHeaderView):
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profileHeaderView.avatarButton.alpha = alpha
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case .profileBanner:
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break // keep source
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}
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}
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}
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}
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