56 lines
1.8 KiB
Swift
56 lines
1.8 KiB
Swift
// Copyright © 2021 Metabolist. All rights reserved.
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import SDWebImage
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import UIKit
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final class AnimatedAttachmentLabel: UILabel, EmojiInsertable {
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override init(frame: CGRect) {
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super.init(frame: frame)
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func drawText(in rect: CGRect) {
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super.drawText(in: rect)
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guard let attributedText = attributedText else { return }
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var attachmentImageViews = Set<SDAnimatedImageView>()
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attributedText.enumerateAttribute(
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.attachment,
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in: NSRange(location: 0, length: attributedText.length),
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options: .longestEffectiveRangeNotRequired) { attachment, _, _ in
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guard let animatedAttachment = attachment as? AnimatedTextAttachment,
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let imageBounds = animatedAttachment.imageBounds
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else { return }
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animatedAttachment.imageView.frame = imageBounds
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// iOS 15 needs this for some inexplicable reason
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if #available(iOS 15, *) {
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animatedAttachment.imageView.frame.origin.y -= font.lineHeight
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}
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animatedAttachment.imageView.contentMode = .scaleAspectFit
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if animatedAttachment.imageView.superview != self {
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addSubview(animatedAttachment.imageView)
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}
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attachmentImageViews.insert(animatedAttachment.imageView)
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}
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for subview in subviews {
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guard let attachmentImageView = subview as? SDAnimatedImageView else { continue }
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if !attachmentImageViews.contains(attachmentImageView) {
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attachmentImageView.removeFromSuperview()
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}
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}
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}
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}
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