From a01ed1827a481fb8ac87aef1a1fda89ed5b33f4e Mon Sep 17 00:00:00 2001
From: Graham Johnson <johnson.graham.ib@gmail.com>
Date: Thu, 17 Dec 2020 19:34:16 -0500
Subject: [PATCH] Align the drag circles on the selction box in the editor to
 be on the center of the border

---
 .../Edit/Compose/Components/SelectionBox.cs   | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs b/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
index 347d9e3ba7..e4feceb987 100644
--- a/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/SelectionBox.cs
@@ -235,6 +235,8 @@ namespace osu.Game.Screens.Edit.Compose.Components
         private void addDragHandle(Anchor anchor) => AddInternal(new SelectionBoxDragHandle
         {
             Anchor = anchor,
+            Y = getAdjustmentToCenterCircleOnBorder(anchor).Y,
+            X = getAdjustmentToCenterCircleOnBorder(anchor).X,
             HandleDrag = e => OnScale?.Invoke(e.Delta, anchor),
             OperationStarted = operationStarted,
             OperationEnded = operationEnded
@@ -251,6 +253,45 @@ namespace osu.Game.Screens.Edit.Compose.Components
             return (endAngle - startAngle) * 180 / MathF.PI;
         }
 
+        /// <summary>
+        /// Adjust Drag circle to be centered on the center of the border instead of on the edge.
+        /// </summary>
+        /// <param name="anchor">The part of the rectangle to be adjusted.</param>
+        private Vector2 getAdjustmentToCenterCircleOnBorder(Anchor anchor)
+        {
+            Vector2 adjustment = Vector2.Zero;
+
+            switch (anchor)
+            {
+                case Anchor.TopLeft:
+                case Anchor.CentreLeft:
+                case Anchor.BottomLeft:
+                    adjustment.X = BORDER_RADIUS / 2;
+                    break;
+                case Anchor.TopRight:
+                case Anchor.CentreRight:
+                case Anchor.BottomRight:
+                    adjustment.X = -BORDER_RADIUS / 2;
+                    break;
+            }
+
+            switch (anchor)
+            {
+                case Anchor.TopLeft:
+                case Anchor.TopCentre:
+                case Anchor.TopRight:
+                    adjustment.Y = BORDER_RADIUS / 2;
+                    break;
+                case Anchor.BottomLeft:
+                case Anchor.BottomCentre:
+                case Anchor.BottomRight:
+                    adjustment.Y = -BORDER_RADIUS / 2;
+                    break;
+            }
+
+            return adjustment;
+        }
+
         private void operationEnded()
         {
             if (--activeOperations == 0)