Initial Commit

Library/PackageCache/com.unity.timeline@1.5.4/Editor/treeview/Manipulator.cs

@@ -0,0 +1,103 @@
+using UnityEngine;
+
+namespace UnityEditor.Timeline
+{
+    abstract class Manipulator
+    {
+        int m_Id;
+
+        protected virtual bool MouseDown(Event evt, WindowState state) { return false; }
+        protected virtual bool MouseDrag(Event evt, WindowState state) { return false; }
+        protected virtual bool MouseWheel(Event evt, WindowState state) { return false; }
+        protected virtual bool MouseUp(Event evt, WindowState state) { return false; }
+        protected virtual bool DoubleClick(Event evt, WindowState state) { return false; }
+        protected virtual bool KeyDown(Event evt, WindowState state) { return false; }
+        protected virtual bool KeyUp(Event evt, WindowState state) { return false; }
+        protected virtual bool ContextClick(Event evt, WindowState state) { return false; }
+        protected virtual bool ValidateCommand(Event evt, WindowState state) { return false; }
+        protected virtual bool ExecuteCommand(Event evt, WindowState state) { return false; }
+
+        public virtual void Overlay(Event evt, WindowState state) {}
+
+        public bool HandleEvent(WindowState state)
+        {
+            Event currentEvent = Event.current;
+            var type = currentEvent.GetTypeForControl(m_Id);
+            return HandleEvent(type, currentEvent, state);
+        }
+
+        public bool HandleEvent(EventType type, WindowState state)
+        {
+            Event currentEvent = Event.current;
+            return HandleEvent(type, currentEvent, state);
+        }
+
+        bool HandleEvent(EventType type, Event evt, WindowState state)
+        {
+            if (m_Id == 0)
+                m_Id =  GUIUtility.GetPermanentControlID();
+
+            bool isHandled = false;
+
+            switch (type)
+            {
+                case EventType.ScrollWheel:
+                    isHandled = MouseWheel(evt, state);
+                    break;
+
+                case EventType.MouseUp:
+                {
+                    if (GUIUtility.hotControl == m_Id)
+                    {
+                        isHandled = MouseUp(evt, state);
+
+                        GUIUtility.hotControl = 0;
+                        evt.Use();
+                    }
+                }
+                break;
+
+                case EventType.MouseDown:
+                {
+                    isHandled = evt.clickCount < 2 ? MouseDown(evt, state) : DoubleClick(evt, state);
+
+                    if (isHandled)
+                        GUIUtility.hotControl = m_Id;
+                }
+                break;
+
+                case EventType.MouseDrag:
+                {
+                    if (GUIUtility.hotControl == m_Id)
+                        isHandled = MouseDrag(evt, state);
+                }
+                break;
+
+                case EventType.KeyDown:
+                    isHandled = KeyDown(evt, state);
+                    break;
+
+                case EventType.KeyUp:
+                    isHandled = KeyUp(evt, state);
+                    break;
+
+                case EventType.ContextClick:
+                    isHandled = ContextClick(evt, state);
+                    break;
+
+                case EventType.ValidateCommand:
+                    isHandled = ValidateCommand(evt, state);
+                    break;
+
+                case EventType.ExecuteCommand:
+                    isHandled = ExecuteCommand(evt, state);
+                    break;
+            }
+
+            if (isHandled)
+                evt.Use();
+
+            return isHandled;
+        }
+    }
+}