metatext/Extensions/NSMutableAttributedString+Extensions.swift

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// Copyright © 2020 Metabolist. All rights reserved.
import Kingfisher
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import Mastodon
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import UIKit
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extension NSMutableAttributedString {
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func insert(emojis: [Emoji], view: UIView) {
for emoji in emojis {
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let token = ":\(emoji.shortcode):"
while let tokenRange = string.range(of: token) {
let attachment = NSTextAttachment()
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attachment.kf.setImage(with: emoji.url, attributedView: view)
replaceCharacters(in: NSRange(tokenRange, in: string), with: NSAttributedString(attachment: attachment))
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}
}
}
func resizeAttachments(toLineHeight lineHeight: CGFloat) {
enumerateAttribute(.attachment, in: NSRange(location: 0, length: length), options: []) { attribute, _, _ in
guard let attachment = attribute as? NSTextAttachment else { return }
attachment.bounds = CGRect(x: 0, y: lineHeight * -0.25, width: lineHeight, height: lineHeight)
}
}
}