更新

WPFDark/Internals/RenderHelper.cs

@@ -0,0 +1,29 @@
+using System.Windows;
+using System.Windows.Media;
+
+using WPFDark.Internals;
+
+namespace WPFDark.Internals
+{
+    internal static class RenderHelper
+    {
+        internal static void DrawPointCursor(this Visual visual, in LayoutRounder rounder, DrawingContext dc, in ImmutableVec2_double pos, bool isEnabled, bool isReadOnly)
+        {
+            var pointIn = Caches.GetPen(ByteColor.White, rounder.RoundLayoutValue(PointCursorRadius - 2));
+            var pointInIsReadOnly = Caches.GetPen(ByteColor.Gray, rounder.RoundLayoutValue(PointCursorRadius - 2));
+            var pointOut = Caches.GetPen(ByteColor.Black, rounder.RoundLayoutValue(PointCursorRadius));
+ 
+            var s = rounder.RoundLayoutValue(1);
+
+            var ob = pointOut;
+            var ib = isEnabled == false || isReadOnly ? pointInIsReadOnly : pointIn;
+
+            var p = new Point(pos.X, pos.Y);
+
+            dc.DrawEllipse(ob.Brush, ob, p, s, s);
+            dc.DrawEllipse(ib.Brush, ib, p, s, s);
+        }
+
+        private const double PointCursorRadius = 6;
+    }
+}