reverting repainting changes: Unity is using additional Events for GUI.TextArea/GUI.TextField.

Need to complete TextBoxBase class and remove Unity input fields usage.

Author: Meragon

Unity/API/UnityGdi.cs

@@ -109,6 +109,8 @@ public void DrawLine(Pen pen, float x1, float y1, float x2, float y2, object mat
             var penWidth = pen.Width;
 
             if (penColor.A <= 0 || penWidth <= 0) return;
+            if (UE.Event.current.type != UE.EventType.repaint)
+                return;
 
             var unityColor = penColor.ToUnityColor();
 
@@ -234,6 +236,8 @@ public void DrawRectangle(Pen pen, float x, float y, float width, float height,
             var penWidth = pen.Width;
 
             if (penColor.A <= 0 || penWidth <= 0) return;
+            if (UE.Event.current.type != UE.EventType.repaint)
+                return;
 
             var color = penColor.ToUnityColor();
             var penDash = pen.DashStyle;
@@ -293,6 +297,9 @@ public void DrawString(string text, Font font, Color color, float x, float y, fl
         {
             if (text == null || font == null) return;
 
+            if (UE.Event.current.type != UE.EventType.repaint)
+                return;
+            
             // TODO: material not supported.
 
             // Set align.
@@ -356,6 +363,9 @@ public void FillRectangle(Color color, float x, float y, float width, float heig
             if (color.A <= 0)
                 return;
 
+            if (UE.Event.current.type != UE.EventType.repaint)
+                return;
+            
             var rect = new UE.Rect(x, y, width, height);
 
             if (material == null || material is UE.Material == false)

Unity/UnityWinForms.cs

@@ -282,8 +282,7 @@ private void OnGUI()
                     UE.Quaternion.AngleAxis(0, UE.Vector3.up),
                     new UE.Vector3(scaleX, scaleY, 1));
 
-            if (UE.Event.current.type == UE.EventType.repaint)
-                controller.Redraw();
+            controller.Redraw();
         }
     }
 }