diff --git a/iOS/PostEditor/PostTextEditingView.swift b/iOS/PostEditor/PostTextEditingView.swift index eede6da..a58fbae 100644 --- a/iOS/PostEditor/PostTextEditingView.swift +++ b/iOS/PostEditor/PostTextEditingView.swift @@ -1,101 +1,102 @@ import SwiftUI struct PostTextEditingView: View { @Environment(\.horizontalSizeClass) var horizontalSizeClass @ObservedObject var post: WFAPost @Binding var updatingTitleFromServer: Bool @Binding var updatingBodyFromServer: Bool @State private var appearance: PostAppearance = .serif @State private var titleTextStyle: UIFont = UIFont(name: "Lora-Regular", size: 26)! @State private var titleTextHeight: CGFloat = 50 @State private var titleIsFirstResponder: Bool = true @State private var bodyTextStyle: UIFont = UIFont(name: "Lora-Regular", size: 17)! @State private var bodyIsFirstResponder: Bool = false private let lineSpacingMultiplier: CGFloat = 0.5 init( post: ObservedObject, updatingTitleFromServer: Binding, updatingBodyFromServer: Binding ) { self._post = post self._updatingTitleFromServer = updatingTitleFromServer self._updatingBodyFromServer = updatingBodyFromServer UITextView.appearance().backgroundColor = .clear } var titleFieldHeight: CGFloat { let minHeight: CGFloat = 50 if titleTextHeight < minHeight { return minHeight } return titleTextHeight } var body: some View { VStack { ZStack(alignment: .topLeading) { if post.title.count == 0 { Text("Title (optional)") .font(Font(titleTextStyle)) .foregroundColor(Color(UIColor.placeholderText)) .padding(.horizontal, 4) .padding(.vertical, 8) } PostTitleTextView( text: $post.title, textStyle: $titleTextStyle, height: $titleTextHeight, - isFirstResponder: $titleIsFirstResponder + isFirstResponder: $titleIsFirstResponder, + lineSpacing: horizontalSizeClass == .compact ? lineSpacingMultiplier / 2 : lineSpacingMultiplier ) .frame(height: titleFieldHeight) .onChange(of: post.title) { _ in if post.status == PostStatus.published.rawValue && !updatingTitleFromServer { post.status = PostStatus.edited.rawValue } if updatingTitleFromServer { updatingTitleFromServer = false } } } ZStack(alignment: .topLeading) { if post.body.count == 0 { Text("Write…") .font(Font(bodyTextStyle)) .foregroundColor(Color(UIColor.placeholderText)) .padding(.horizontal, 4) .padding(.vertical, 8) } PostBodyTextView( text: $post.body, textStyle: $bodyTextStyle, isFirstResponder: $bodyIsFirstResponder, lineSpacing: horizontalSizeClass == .compact ? lineSpacingMultiplier / 2 : lineSpacingMultiplier ) .onChange(of: post.body) { _ in if post.status == PostStatus.published.rawValue && !updatingBodyFromServer { post.status = PostStatus.edited.rawValue } if updatingBodyFromServer { updatingBodyFromServer = false } } } } .onChange(of: titleIsFirstResponder, perform: { _ in self.bodyIsFirstResponder.toggle() }) .onAppear(perform: { switch post.appearance { case "sans": self.appearance = .sans case "wrap", "mono", "code": self.appearance = .mono default: self.appearance = .serif } self.titleTextStyle = UIFont(name: appearance.rawValue, size: 26)! self.bodyTextStyle = UIFont(name: appearance.rawValue, size: 17)! }) } } diff --git a/iOS/PostEditor/PostTitleTextView.swift b/iOS/PostEditor/PostTitleTextView.swift index 531feee..510ea31 100644 --- a/iOS/PostEditor/PostTitleTextView.swift +++ b/iOS/PostEditor/PostTitleTextView.swift @@ -1,92 +1,126 @@ // Based on https://lostmoa.com/blog/DynamicHeightForTextFieldInSwiftUI and https://stackoverflow.com/a/56508132/1234545 import SwiftUI class PostTitleCoordinator: NSObject, UITextViewDelegate, NSLayoutManagerDelegate { @Binding var text: String @Binding var isFirstResponder: Bool + var lineSpacingMultiplier: CGFloat var didBecomeFirstResponder: Bool = false var postTitleTextView: PostTitleTextView weak var textView: UITextView? - init(_ textView: PostTitleTextView, text: Binding, isFirstResponder: Binding) { + init( + _ textView: PostTitleTextView, + text: Binding, + isFirstResponder: Binding, + lineSpacingMultiplier: CGFloat + ) { self.postTitleTextView = textView _text = text _isFirstResponder = isFirstResponder + self.lineSpacingMultiplier = lineSpacingMultiplier } func textViewDidChange(_ textView: UITextView) { DispatchQueue.main.async { self.postTitleTextView.text = textView.text ?? "" } } func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool { if text == "\n" { self.isFirstResponder.toggle() return false } return true } func layoutManager( _ layoutManager: NSLayoutManager, didCompleteLayoutFor textContainer: NSTextContainer?, atEnd layoutFinishedFlag: Bool ) { DispatchQueue.main.async { guard let view = self.textView else { return } let size = view.sizeThatFits(view.bounds.size) if self.postTitleTextView.height != size.height { self.postTitleTextView.height = size.height } } } + + func layoutManager( + _ layoutManager: NSLayoutManager, + lineSpacingAfterGlyphAt glyphIndex: Int, + withProposedLineFragmentRect rect: CGRect + ) -> CGFloat { + // HACK: - This seems to be the only way to get line spacing to update dynamically on iPad + // when switching between full-screen, split-screen, and slide-over views. + if let window = UIApplication.shared.windows.filter({ $0.isKeyWindow }).first { + // Get the width of the window to determine the size class + if window.frame.width < 600 { + // Use 0.25 multiplier for compact size class + return 17 * 0.25 + } else { + // Use 0.5 multiplier otherwise + return 17 * 0.5 + } + } else { + return 17 * lineSpacingMultiplier + } + } } struct PostTitleTextView: UIViewRepresentable { @Binding var text: String @Binding var textStyle: UIFont @Binding var height: CGFloat @Binding var isFirstResponder: Bool + @State var lineSpacing: CGFloat func makeUIView(context: UIViewRepresentableContext) -> UITextView { let textView = UITextView() textView.isEditable = true textView.isUserInteractionEnabled = true textView.isScrollEnabled = true textView.alwaysBounceVertical = false context.coordinator.textView = textView textView.delegate = context.coordinator textView.layoutManager.delegate = context.coordinator let font = textStyle let fontMetrics = UIFontMetrics(forTextStyle: .largeTitle) textView.font = fontMetrics.scaledFont(for: font) textView.backgroundColor = UIColor.clear return textView } func makeCoordinator() -> PostTitleCoordinator { - return Coordinator(self, text: $text, isFirstResponder: $isFirstResponder) + return Coordinator( + self, + text: $text, + isFirstResponder: $isFirstResponder, + lineSpacingMultiplier: lineSpacing + ) } func updateUIView(_ uiView: UITextView, context: UIViewRepresentableContext) { uiView.text = text let font = textStyle let fontMetrics = UIFontMetrics(forTextStyle: .largeTitle) uiView.font = fontMetrics.scaledFont(for: font) // We don't want the text field to become first responder every time SwiftUI refreshes the view. if isFirstResponder && !context.coordinator.didBecomeFirstResponder { uiView.becomeFirstResponder() context.coordinator.didBecomeFirstResponder = true } } }