Add (dynamic) line spacing back to post body editor

iOS/PostEditor/PostBodyTextView.swift

@@ -34,7 +34,20 @@ class PostBodyCoordinator: NSObject, UITextViewDelegate, NSLayoutManagerDelegate
         lineSpacingAfterGlyphAt glyphIndex: Int,
         withProposedLineFragmentRect rect: CGRect
     ) -> CGFloat {
-        return 17 * lineSpacingMultiplier
+        // 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
+        }
     }
 }
 
@@ -42,7 +55,7 @@ struct PostBodyTextView: UIViewRepresentable {
     @Binding var text: String
     @Binding var textStyle: UIFont
     @Binding var isFirstResponder: Bool
-    var lineSpacing: CGFloat
+    @State var lineSpacing: CGFloat
 
     func makeUIView(context: UIViewRepresentableContext<PostBodyTextView>) -> UITextView {
         let textView = UITextView(frame: .zero)

iOS/PostEditor/PostEditorView.swift

@@ -3,7 +3,6 @@ import SwiftUI
 struct PostEditorView: View {
     @EnvironmentObject var model: WriteFreelyModel
     @Environment(\.managedObjectContext) var moc
-    @Environment(\.horizontalSizeClass) var horizontalSizeClass
     @Environment(\.presentationMode) var presentationMode
 
     @ObservedObject var post: WFAPost

iOS/PostEditor/PostTextEditingView.swift

@@ -11,7 +11,7 @@ struct PostTextEditingView: View {
     @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 bodyLineSpacingMultiplier: CGFloat = 0.5
+    private let lineSpacingMultiplier: CGFloat = 0.5
 
     init(
         post: ObservedObject<WFAPost>,
@@ -70,9 +70,7 @@ struct PostTextEditingView: View {
                     text: $post.body,
                     textStyle: $bodyTextStyle,
                     isFirstResponder: $bodyIsFirstResponder,
-                    lineSpacing: horizontalSizeClass == .compact
-                        ? bodyLineSpacingMultiplier / 2
-                        : bodyLineSpacingMultiplier
+                    lineSpacing: horizontalSizeClass == .compact ? lineSpacingMultiplier / 2 : lineSpacingMultiplier
                 )
                 .onChange(of: post.body) { _ in
                     if post.status == PostStatus.published.rawValue && !updatingBodyFromServer {

iOS/PostEditor/PostTitleTextView.swift

@@ -1,5 +1,4 @@
-// Based on https://lostmoa.com/blog/DynamicHeightForTextFieldInSwiftUI/
-// and https://stackoverflow.com/a/56508132/1234545
+// Based on https://lostmoa.com/blog/DynamicHeightForTextFieldInSwiftUI and https://stackoverflow.com/a/56508132/1234545
 
 import SwiftUI
 
@@ -37,9 +36,7 @@ class PostTitleCoordinator: NSObject, UITextViewDelegate, NSLayoutManagerDelegat
         atEnd layoutFinishedFlag: Bool
     ) {
         DispatchQueue.main.async {
-            guard let view = self.textView else {
-                return
-            }
+            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