Initial Commit

Library/PackageCache/com.unity.timeline@1.5.4/Editor/Manipulators/HeaderSplitterManipulator.cs

@@ -0,0 +1,49 @@
+using System;
+using UnityEngine;
+
+namespace UnityEditor.Timeline
+{
+    class HeaderSplitterManipulator : Manipulator
+    {
+        bool m_Captured;
+
+        protected override bool MouseDown(Event evt, WindowState state)
+        {
+            Rect headerSplitterRect = state.GetWindow().headerSplitterRect;
+            if (headerSplitterRect.Contains(evt.mousePosition))
+            {
+                m_Captured = true;
+                state.AddCaptured(this);
+                return true;
+            }
+
+            return false;
+        }
+
+        protected override bool MouseDrag(Event evt, WindowState state)
+        {
+            if (!m_Captured)
+                return false;
+
+            state.sequencerHeaderWidth = evt.mousePosition.x;
+            return true;
+        }
+
+        protected override bool MouseUp(Event evt, WindowState state)
+        {
+            if (!m_Captured)
+                return false;
+
+            state.RemoveCaptured(this);
+            m_Captured = false;
+
+            return true;
+        }
+
+        public override void Overlay(Event evt, WindowState state)
+        {
+            Rect rect = state.GetWindow().sequenceRect;
+            EditorGUIUtility.AddCursorRect(rect, MouseCursor.SplitResizeLeftRight);
+        }
+    }
+}