110 lines
4.0 KiB
Swift
110 lines
4.0 KiB
Swift
//
|
|
// AccountDisplayNameView.swift
|
|
// Tusker
|
|
//
|
|
// Created by Shadowfacts on 9/7/20.
|
|
// Copyright © 2020 Shadowfacts. All rights reserved.
|
|
//
|
|
|
|
import SwiftUI
|
|
import Pachyderm
|
|
import WebURLFoundationExtras
|
|
|
|
private let emojiRegex = try! NSRegularExpression(pattern: ":(\\w+):", options: [])
|
|
|
|
struct AccountDisplayNameView: View {
|
|
let account: any AccountProtocol
|
|
let textStyle: Font.TextStyle
|
|
@ScaledMetric var emojiSize: CGFloat
|
|
@State var text: Text
|
|
@State var emojiRequests = [ImageCache.Request]()
|
|
|
|
init(account: any AccountProtocol, textStyle: Font.TextStyle, emojiSize: CGFloat) {
|
|
self.account = account
|
|
self.textStyle = textStyle
|
|
self._emojiSize = ScaledMetric(wrappedValue: emojiSize, relativeTo: textStyle)
|
|
let name = account.displayName.isEmpty ? account.username : account.displayName
|
|
self._text = State(initialValue: Text(verbatim: name))
|
|
}
|
|
|
|
var body: some View {
|
|
text
|
|
.font(.system(textStyle).weight(.semibold))
|
|
.onAppear(perform: self.loadEmojis)
|
|
}
|
|
|
|
@MainActor
|
|
private func loadEmojis() {
|
|
let fullRange = NSRange(account.displayName.startIndex..., in: account.displayName)
|
|
let matches = emojiRegex.matches(in: account.displayName, options: [], range: fullRange)
|
|
guard !matches.isEmpty else { return }
|
|
|
|
let emojiSize = self.emojiSize
|
|
let emojiImages = MultiThreadDictionary<String, Image>()
|
|
|
|
let group = DispatchGroup()
|
|
|
|
for emoji in account.emojis {
|
|
guard matches.contains(where: { (match) in
|
|
let matchShortcode = (account.displayName as NSString).substring(with: match.range(at: 1))
|
|
return emoji.shortcode == matchShortcode
|
|
}) else {
|
|
continue
|
|
}
|
|
|
|
group.enter()
|
|
let request = ImageCache.emojis.get(URL(emoji.url)!) { (_, image) in
|
|
defer { group.leave() }
|
|
guard let image = image else { return }
|
|
|
|
let size = CGSize(width: emojiSize, height: emojiSize)
|
|
let renderer = UIGraphicsImageRenderer(size: size)
|
|
let resized = renderer.image { (ctx) in
|
|
image.draw(in: CGRect(origin: .zero, size: size))
|
|
}
|
|
|
|
emojiImages[emoji.shortcode] = Image(uiImage: resized)
|
|
}
|
|
if let request = request {
|
|
emojiRequests.append(request)
|
|
}
|
|
}
|
|
|
|
group.notify(queue: .main) {
|
|
var text: Text?
|
|
|
|
var endIndex = account.displayName.utf16.count
|
|
|
|
// iterate backwards as to not alter the indices of earlier matches
|
|
for match in matches.reversed() {
|
|
let shortcode = (account.displayName as NSString).substring(with: match.range(at: 1))
|
|
guard let image = emojiImages[shortcode] else { continue }
|
|
|
|
let afterCurrentMatch = (account.displayName as NSString).substring(with: NSRange(location: match.range.upperBound, length: endIndex - match.range.upperBound))
|
|
|
|
if let subsequent = text {
|
|
text = Text(image) + Text(verbatim: afterCurrentMatch) + subsequent
|
|
} else {
|
|
text = Text(image) + Text(verbatim: afterCurrentMatch)
|
|
}
|
|
|
|
endIndex = match.range.lowerBound
|
|
}
|
|
|
|
let beforeLastMatch = (account.displayName as NSString).substring(to: endIndex)
|
|
|
|
if let text = text {
|
|
self.text = Text(verbatim: beforeLastMatch) + text
|
|
} else {
|
|
self.text = Text(verbatim: beforeLastMatch)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//struct AccountDisplayNameLabel_Previews: PreviewProvider {
|
|
// static var previews: some View {
|
|
// AccountDisplayNameView()
|
|
// }
|
|
//}
|