Use Crosshair Cursor

Author: thecoolwinter

Sources/CodeEditTextView/TextView/TextView+FirstResponder.swift

@@ -51,7 +51,10 @@ extension TextView {
     open override func resetCursorRects() {
         super.resetCursorRects()
         if isSelectable {
-            addCursorRect(visibleRect, cursor: .iBeam)
+            addCursorRect(
+                visibleRect,
+                cursor: isOptionPressed ? .crosshair : .iBeam
+            )
         }
     }
 }

Sources/CodeEditTextView/TextView/TextView+KeyDown.swift

@@ -47,4 +47,14 @@ extension TextView {
 
         return false
     }
+
+    override public func flagsChanged(with event: NSEvent) {
+        super.flagsChanged(with: event)
+
+        let modifierFlags = event.modifierFlags.intersection(.deviceIndependentFlagsMask)
+        if modifierFlags.contains(.option) != isOptionPressed {
+            isOptionPressed = modifierFlags.contains(.option)
+            resetCursorRects()
+        }
+    }
 }

Sources/CodeEditTextView/TextView/TextView.swift

@@ -269,6 +269,8 @@ public class TextView: NSView, NSTextContent {
     var draggingCursorView: NSView?
     var isDragging: Bool = false
 
+    var isOptionPressed: Bool = false
+
     private var fontCharWidth: CGFloat {
         (" " as NSString).size(withAttributes: [.font: font]).width
     }