55 lines
1.8 KiB
Swift
55 lines
1.8 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Mastodon
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import SDWebImage
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import UIKit
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import ViewModels
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extension NSMutableAttributedString {
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func insert(emojis: [Emoji], view: UIView & EmojiInsertable, identityContext: IdentityContext) {
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for emoji in emojis {
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let token = ":\(emoji.shortcode):"
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while let tokenRange = string.range(of: token) {
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let attachment = AnimatedTextAttachment()
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let imageURL: URL
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if !identityContext.appPreferences.shouldReduceMotion,
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identityContext.appPreferences.animateCustomEmojis {
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imageURL = emoji.url
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} else {
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imageURL = emoji.staticUrl
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}
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attachment.imageView.sd_setImage(with: imageURL) { image, _, _, _ in
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attachment.image = image
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DispatchQueue.main.async {
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view.setNeedsDisplay()
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}
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}
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attachment.accessibilityLabel = emoji.shortcode
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replaceCharacters(in: NSRange(tokenRange, in: string), with: NSAttributedString(attachment: attachment))
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}
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}
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}
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func resizeAttachments(toLineHeight lineHeight: CGFloat) {
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enumerateAttribute(.attachment, in: NSRange(location: 0, length: length), options: []) { attribute, _, _ in
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guard let attachment = attribute as? NSTextAttachment else { return }
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attachment.bounds = CGRect(x: 0, y: lineHeight * -0.25, width: lineHeight, height: lineHeight)
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}
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}
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func appendWithSeparator(_ string: NSAttributedString) {
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append(.init(string: .separator))
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append(string)
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}
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func appendWithSeparator(_ string: String) {
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appendWithSeparator(.init(string: string))
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}
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}
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