UnityEditor.FrameDebuggerWindow.OnGUI C# (CSharp) Method

        internal void OnGUI()
        {
            FrameDebuggerEvent[] frameEvents = FrameDebuggerUtility.GetFrameEvents();
            if (this.m_TreeViewState == null)
            {
                this.m_TreeViewState = new TreeViewState();
            }
            if (this.m_Tree == null)
            {
                this.m_Tree = new FrameDebuggerTreeView(frameEvents, this.m_TreeViewState, this, new Rect());
                this.m_FrameEventsHash = FrameDebuggerUtility.eventsHash;
                this.m_Tree.m_DataSource.SetExpandedWithChildren(this.m_Tree.m_DataSource.root, true);
            }
            if (FrameDebuggerUtility.eventsHash != this.m_FrameEventsHash)
            {
                this.m_Tree.m_DataSource.SetEvents(frameEvents);
                this.m_FrameEventsHash = FrameDebuggerUtility.eventsHash;
            }
            int limit = FrameDebuggerUtility.limit;
            bool flag = this.DrawToolbar(frameEvents);
            if (!FrameDebuggerUtility.enabled)
            {
                GUI.enabled = true;
                if (!GraphicsSupportsFrameDebugger())
                {
                    EditorGUILayout.HelpBox("Frame Debugger requires multi-threaded renderer. Usually Unity uses that; if it does not try starting with -force-gfx-mt command line argument.", MessageType.Warning, true);
                }
                EditorGUILayout.HelpBox("Frame Debugger lets you step through draw calls and see how exactly frame is rendered. Click Enable!", MessageType.Info, true);
            }
            else
            {
                float fixedHeight = EditorStyles.toolbar.fixedHeight;
                Rect dragRect = new Rect(this.m_ListWidth, fixedHeight, 5f, base.position.height - fixedHeight);
                dragRect = EditorGUIUtility.HandleHorizontalSplitter(dragRect, base.position.width, 200f, 200f);
                this.m_ListWidth = dragRect.x;
                Rect rect = new Rect(0f, fixedHeight, this.m_ListWidth, base.position.height - fixedHeight);
                Rect rect3 = new Rect(this.m_ListWidth + 4f, fixedHeight + 4f, (base.position.width - this.m_ListWidth) - 8f, (base.position.height - fixedHeight) - 8f);
                this.DrawEventsTree(rect);
                EditorGUIUtility.DrawHorizontalSplitter(dragRect);
                this.DrawCurrentEvent(rect3, frameEvents);
            }
            if (flag || (limit != FrameDebuggerUtility.limit))
            {
                this.RepaintOnLimitChange();
            }
            if (this.m_RepaintFrames > 0)
            {
                this.m_Tree.SelectFrameEventIndex(FrameDebuggerUtility.limit);
                this.RepaintAllNeededThings();
                this.m_RepaintFrames--;
            }
        }