UnityEditor.MaterialPropertyDrawer.OnGUI C# (CSharp) Method

        public virtual void OnGUI(Rect position, MaterialProperty prop, GUIContent label, MaterialEditor editor)
        {
            this.OnGUI(position, prop, label.text, editor);
        }
    }

        public void OnGUI(ref Rect position, MaterialProperty prop, GUIContent label, MaterialEditor editor)
        {
            float oldLabelWidth, oldFieldWidth;
            var   propHeight = position.height;

            position.height = 0;
            if (m_DecoratorDrawers != null)
            {
                foreach (var decorator in m_DecoratorDrawers)
                {
                    position.height = decorator.GetPropertyHeight(prop, label.text, editor);

                    oldLabelWidth = EditorGUIUtility.labelWidth;
                    oldFieldWidth = EditorGUIUtility.fieldWidth;
                    decorator.OnGUI(position, prop, label, editor);
                    EditorGUIUtility.labelWidth = oldLabelWidth;
                    EditorGUIUtility.fieldWidth = oldFieldWidth;

                    position.y += position.height;
                    propHeight -= position.height;
                }
            }

            position.height = propHeight;
            if (m_PropertyDrawer != null)
            {
                oldLabelWidth = EditorGUIUtility.labelWidth;
                oldFieldWidth = EditorGUIUtility.fieldWidth;
                m_PropertyDrawer.OnGUI(position, prop, label, editor);
                EditorGUIUtility.labelWidth = oldLabelWidth;
                EditorGUIUtility.fieldWidth = oldFieldWidth;
            }
        }