metatext-app-ios-iphone-ipad/Shared/Extensions/NSMutableAttributedString+E...

39 lines
1.3 KiB
Swift

// Copyright © 2020 Metabolist. All rights reserved.
#if canImport(UIKit)
import UIKit
#elseif canImport(AppKit)
import AppKit
#endif
import Kingfisher
extension NSMutableAttributedString {
func insert(emojis: [Emoji], onImageLoad: @escaping (() -> Void)) {
for emoji in emojis {
let token = ":\(emoji.shortcode):"
while let tokenRange = string.range(of: token) {
let attachment = NSTextAttachment()
let attachmentAttributedString = NSAttributedString(attachment: attachment)
replaceCharacters(in: NSRange(tokenRange, in: string), with: attachmentAttributedString)
KingfisherManager.shared.retrieveImage(with: emoji.url) {
guard case let .success(value) = $0 else { return }
attachment.image = value.image
onImageLoad()
}
}
}
}
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)
}
}
}