Feature: highlights scene items

HierarchyDecorator/Scripts/Editor/Data/HierarchyStyleData.cs

@@ -28,6 +28,14 @@ public Color GetColor(Rect rect)
         }
     }
 
+    [System.Serializable]
+    public class SceneItemHighlightSettings
+    {
+        public Color color = new Color(0.25f, 1.0f, 0.25f, 0.2f);
+        [Min(0)] public int lineThickness = 17;
+        [Min(0)] public int lineWidth = 34;
+    }
+
     [System.Serializable]
     public class HierarchyStyleData
     {
@@ -99,6 +107,12 @@ public class HierarchyStyleData
         public ColorSetting lightMode = new ColorSetting(new Color(0.8f, 0.8f, 0.8f, 1f), new Color(0.765f, 0.765f, 0.765f, 1f));
         public ColorSetting darkMode = new ColorSetting(new Color(0.245f, 0.245f, 0.245f, 1f), new Color(0.225f, 0.225f, 0.225f, 1f));
 
+        // Scene Item Highlight
+        public bool showSceneItemHighlight = true;
+        public SceneItemHighlightSettings sceneItemHighlight = new SceneItemHighlightSettings();
+
+        // Background 
+
         // --- Methods
 
         // Styles

HierarchyDecorator/Scripts/Editor/HierarchyManager.cs

@@ -95,6 +95,7 @@ public static void OnGUI(int id, Rect rect)
 
             if (!TryGetValidInstance(id, out HierarchyItem item))
             {
+                DrawSceneItemHighlight(rect, id);
                 return;
             }
 
@@ -160,6 +161,24 @@ private static HierarchyItem GetNext(int id, GameObject instance)
             return item;
         }
 
+        private static void DrawSceneItemHighlight(Rect rect, int id)
+        {
+            if (!s_Settings.styleData.showSceneItemHighlight)
+                return;
+            for (int i = 0; i < SceneManager.sceneCount; ++i)
+            {
+                var scene = SceneManager.GetSceneAt(i);
+                if (scene.GetHashCode() == id)
+                {
+                    rect.x -= 48;
+                    rect.width = s_Settings.styleData.sceneItemHighlight.lineWidth;
+                    rect.height = s_Settings.styleData.sceneItemHighlight.lineThickness;
+                    EditorGUI.DrawRect(rect, s_Settings.styleData.sceneItemHighlight.color);
+                    break;
+                }
+            }
+        }
+
         public static bool IsPreviousParent()
         {
             if (Previous == null)
@@ -232,4 +251,4 @@ public IEnumerable<ComponentItem> GetItems()
             }
         }
     }
-}
+}

HierarchyDecorator/Scripts/Editor/Tabs/StyleTab.cs

@@ -68,7 +68,13 @@ public StyleTab(Settings settings, SerializedObject serializedSettings) : base (
             CreateDrawableGroup("Background")
                 .RegisterSerializedProperty(serializedTab, "twoToneBackground")
                 .RegisterSerializedGroup(darkModeBack, "Dark Mode", "colorOne", "colorTwo")
-                .RegisterSerializedGroup(lightModeBack, "Light Mode", "colorOne", "colorTwo");
+                .RegisterSerializedGroup(lightModeBack, "Light Mode", "colorOne", "colorTwo").Space()
+                .RegisterSerializedProperty(serializedTab, "showSceneItemHighlight")
+                .RegisterSerializedGroup(serializedTab.FindPropertyRelative("sceneItemHighlight"), 
+                    "Highlight Settings",
+                    nameof(SceneItemHighlightSettings.color),
+                    nameof(SceneItemHighlightSettings.lineWidth),
+                    nameof(SceneItemHighlightSettings.lineThickness));
 
             CreateDrawableGroup ("Styles")
                 .RegisterSerializedProperty(serializedTab, "displayTags", "displayLayers", "displayIcons")
@@ -400,4 +406,4 @@ private Rect GetElementDeleteRect(Rect rect)
             return rect;
         }
     }
-}
+}