Enabled anti-aliasing and font smoothing for line numbers. Changed line number text color.

Author: austincondiff

Example/CodeEditSourceEditorExample/CodeEditSourceEditorExample/Views/ContentView.swift

@@ -19,7 +19,7 @@ struct ContentView: View {
 
     @State private var language: CodeLanguage = .default
     @State private var theme: EditorTheme = .light
-    @State private var font: NSFont = NSFont.monospacedSystemFont(ofSize: 12, weight: .regular)
+    @State private var font: NSFont = NSFont.monospacedSystemFont(ofSize: 12, weight: .medium)
     @AppStorage("wrapLines") private var wrapLines: Bool = true
     @State private var cursorPositions: [CursorPosition] = []
     @AppStorage("systemCursor") private var useSystemCursor: Bool = false

Sources/CodeEditSourceEditor/Controller/TextViewController+LoadView.swift

@@ -18,7 +18,8 @@ extension TextViewController {
 
         gutterView = GutterView(
             font: font.rulerFont,
-            textColor: .secondaryLabelColor,
+            textColor: theme.text.color.withAlphaComponent(0.35),
+            selectedTextColor: theme.text.color,
             textView: textView,
             delegate: self
         )
@@ -105,6 +106,15 @@ extension TextViewController {
 
                 if self.systemAppearance != newValue.name {
                     self.systemAppearance = newValue.name
+
+                    // Reset content insets and gutter position when appearance changes
+                    if let contentInsets = self.contentInsets {
+                        self.scrollView.contentInsets = contentInsets
+                        if let searchController = self.searchController, searchController.isShowingFindPanel {
+                            self.scrollView.contentInsets.top += FindPanel.height
+                        }
+                        self.gutterView.frame.origin.y = -self.scrollView.contentInsets.top
+                    }
                 }
             }
             .store(in: &cancellables)

Sources/CodeEditSourceEditor/Controller/TextViewController.swift

@@ -71,6 +71,8 @@ public class TextViewController: NSViewController {
             )
             textView.selectionManager.selectedLineBackgroundColor = theme.selection
             highlighter?.invalidate()
+            gutterView.textColor = theme.text.color.withAlphaComponent(0.35)
+            gutterView.selectedLineTextColor = theme.text.color
         }
     }
 

Sources/CodeEditSourceEditor/Gutter/GutterView.swift

@@ -60,7 +60,7 @@ public class GutterView: NSView {
     var highlightSelectedLines: Bool = true
 
     @Invalidating(.display)
-    var selectedLineTextColor: NSColor? = .textColor
+    var selectedLineTextColor: NSColor? = .labelColor
 
     @Invalidating(.display)
     var selectedLineColor: NSColor = NSColor.selectedTextBackgroundColor.withSystemEffect(.disabled)
@@ -81,11 +81,13 @@ public class GutterView: NSView {
     public init(
         font: NSFont,
         textColor: NSColor,
+        selectedTextColor: NSColor?,
         textView: TextView,
         delegate: GutterViewDelegate? = nil
     ) {
         self.font = font
         self.textColor = textColor
+        self.selectedLineTextColor = selectedTextColor ?? .secondaryLabelColor
         self.textView = textView
         self.delegate = delegate
 
@@ -201,15 +203,6 @@ public class GutterView: NSView {
 
         context.saveGState()
 
-        context.setAllowsAntialiasing(true)
-        context.setShouldAntialias(true)
-        context.setAllowsFontSmoothing(false)
-        context.setAllowsFontSubpixelPositioning(true)
-        context.setShouldSubpixelPositionFonts(true)
-        context.setAllowsFontSubpixelQuantization(true)
-        context.setShouldSubpixelQuantizeFonts(true)
-        ContextSetHiddenSmoothingStyle(context, 16)
-
         context.textMatrix = CGAffineTransform(scaleX: 1, y: -1)
         for linePosition in textView.layoutManager.visibleLines() {
             if selectionRangeMap.intersects(integersIn: linePosition.range) {