We dont need @State as we arent editing content in the OTIO TImeline, Tracks or Items.

Author: vade

OpenTimelineIO-Sample/OpenTimelineIO-Reader/Views/ItemView.swift

@@ -43,10 +43,13 @@ struct ItemView : View {
                         )
                         .frame(width: self.getSafeWidth() - 2)
 
-                    Text(item.name)
-                        .lineLimit(1)
-                        .font(.system(size: 10))
-                        .frame(width: self.getSafeWidth())
+                    if self.getSafeWidth() > 40
+                    {
+                        Text(item.name)
+                            .lineLimit(1)
+                            .font(.system(size: 10))
+                            .frame(width: self.getSafeWidth())
+                    }
                 }
             }
             .frame(width: self.getSafeWidth())

OpenTimelineIO-Sample/OpenTimelineIO-Reader/Views/TimeRulerView.swift

@@ -11,7 +11,7 @@ import TimecodeKit
 import SwiftUI
 struct TimeRulerView: View
 {
-    var timeline: OpenTimelineIO.Timeline
+    let timeline: OpenTimelineIO.Timeline
     @Binding var secondsToPixels: Double
     @Binding var currentTime: OpenTimelineIO.RationalTime
 

OpenTimelineIO-Sample/OpenTimelineIO-Reader/Views/TimelineView.swift

@@ -12,7 +12,7 @@ import SwiftUI
 
 struct TimelineView : View {
 
-    var timeline:OpenTimelineIO.Timeline
+    let timeline:OpenTimelineIO.Timeline
 
     @Binding var currentTime:RationalTime
     @Binding var secondsToPixels:Double

OpenTimelineIO-Sample/OpenTimelineIO-Reader/Views/TrackView.swift

@@ -11,9 +11,10 @@ import OpenTimelineIO
 import TimecodeKit
 import SwiftUI
 
+
 struct TrackView : View
 {
-    @State var track:OpenTimelineIO.Track
+    let track:OpenTimelineIO.Track
     @State var backgroundColor:Color
     @Binding var secondsToPixels:Double
     @Binding var selectedItem:Item?
@@ -26,12 +27,13 @@ struct TrackView : View
         {
             Section(header: self.headerView() )
            {
+
                 ForEach(0..<items.count, id: \.self) { index in
-                    
                     let item = items[index]
-                    
+
                     ItemView(item: item,
                              backgroundColor: self.backgroundColor,
+//                             backgroundColor: [Color.red, Color.blue, Color.green, Color.yellow, Color.purple].randomElement()!,
                              selected: item.isEquivalent(to: self.selectedItem ?? Item() ),
                              secondsToPixels: self.$secondsToPixels)