I can't read this horror, expand

Change-Id: Ibb99040b612df2aad638e574667555d0302b46c4

vcl/unx/gtk3/gdi/gtk3salnativewidgets-gtk.cxx

@@ -1437,32 +1437,101 @@ void GtkSalGraphics::updateSettings( AllSettings& rSettings )
 
 bool GtkSalGraphics::IsNativeControlSupported( ControlType nType, ControlPart nPart )
 {
-    if(
-       (nType == CTRL_EDITBOX) ||
-       (nType == CTRL_PUSHBUTTON && nPart == PART_ENTIRE_CONTROL) ||
-       (nType == CTRL_CHECKBOX && nPart == PART_ENTIRE_CONTROL) ||
-       (nType == CTRL_RADIOBUTTON && nPart == PART_ENTIRE_CONTROL) ||
-       (nType == CTRL_TOOLBAR &&
-        (nPart == PART_BUTTON || nPart == PART_ENTIRE_CONTROL)) ||
-        ((nType == CTRL_SPINBOX) &&
-         ((nPart == PART_ENTIRE_CONTROL) || (nPart == PART_ALL_BUTTONS) ||
-          (nPart == HAS_BACKGROUND_TEXTURE))) ||
-        ((nType == CTRL_COMBOBOX) &&
-         ((nPart == PART_ENTIRE_CONTROL) || (nPart == PART_ALL_BUTTONS) ||
-          (nPart == HAS_BACKGROUND_TEXTURE))) ||
-        ((nType==CTRL_LISTBOX) &&
-         ((nPart==PART_ENTIRE_CONTROL) || (nPart == PART_WINDOW) || (nPart == PART_BUTTON_DOWN) ||
-          (nPart==HAS_BACKGROUND_TEXTURE))) ||
-       ((nType == CTRL_SCROLLBAR) &&
-        ( (nPart == PART_DRAW_BACKGROUND_HORZ) || (nPart == PART_DRAW_BACKGROUND_VERT) ||
-          (nPart == PART_ENTIRE_CONTROL) || (nPart == HAS_THREE_BUTTONS))) ||
-       (nType == CTRL_MENU_POPUP &&
-        ( (nPart == PART_ENTIRE_CONTROL) || (nPart == PART_MENU_ITEM) ||
-          (nPart == PART_MENU_ITEM_CHECK_MARK) || (nPart == PART_MENU_ITEM_RADIO_MARK) ||
-          (nPart == PART_MENU_SEPARATOR) || (nPart == PART_MENU_SUBMENU_ARROW) ))
-      )
+    switch(nType)
     {
-      return true;
+        case CTRL_PUSHBUTTON:
+        case CTRL_RADIOBUTTON:
+        case CTRL_CHECKBOX:
+//        case CTRL_TOOLTIP:
+//        case CTRL_PROGRESS:
+//        case CTRL_LISTNODE:
+//        case CTRL_LISTNET:
+            if(nPart==PART_ENTIRE_CONTROL)
+                return true;
+            break;
+
+        case CTRL_SCROLLBAR:
+            if(nPart==PART_DRAW_BACKGROUND_HORZ || nPart==PART_DRAW_BACKGROUND_VERT ||
+               nPart==PART_ENTIRE_CONTROL       || nPart==HAS_THREE_BUTTONS)
+                return true;
+            break;
+
+        case CTRL_EDITBOX:
+//        case CTRL_MULTILINE_EDITBOX:
+        case CTRL_COMBOBOX:
+            if(nPart==PART_ENTIRE_CONTROL || nPart==HAS_BACKGROUND_TEXTURE || nPart == PART_ALL_BUTTONS)
+                return true;
+            break;
+
+        case CTRL_SPINBOX:
+            if(nPart==PART_ENTIRE_CONTROL || nPart==PART_ALL_BUTTONS || nPart==HAS_BACKGROUND_TEXTURE)
+                return true;
+            break;
+
+//        case CTRL_SPINBUTTONS:
+//            if(nPart==PART_ENTIRE_CONTROL || nPart==PART_ALL_BUTTONS)
+//                return true;
+//            break;
+
+//        case CTRL_FRAME:
+//        case CTRL_WINDOW_BACKGROUND:
+//            return true;
+
+//        case CTRL_TAB_ITEM:
+//        case CTRL_TAB_PANE:
+//        case CTRL_TAB_BODY:
+//            if(nPart==PART_ENTIRE_CONTROL || nPart==PART_TABS_DRAW_RTL)
+//                return true;
+//            break;
+
+        case CTRL_LISTBOX:
+            if(nPart==PART_ENTIRE_CONTROL || nPart==PART_WINDOW || nPart==HAS_BACKGROUND_TEXTURE || nPart == PART_BUTTON_DOWN)
+                return true;
+            break;
+
+        case CTRL_TOOLBAR:
+            if( nPart==PART_ENTIRE_CONTROL
+//                ||  nPart==PART_DRAW_BACKGROUND_HORZ
+//                ||  nPart==PART_DRAW_BACKGROUND_VERT
+//                ||  nPart==PART_THUMB_HORZ
+//                ||  nPart==PART_THUMB_VERT
+                ||  nPart==PART_BUTTON
+//                ||  nPart==PART_SEPARATOR_HORZ
+//                ||  nPart==PART_SEPARATOR_VERT
+                )
+                return true;
+            break;
+
+//        case CTRL_MENUBAR:
+//            if(nPart==PART_ENTIRE_CONTROL || nPart==PART_MENU_ITEM)
+//                return true;
+//            break;
+
+        case CTRL_MENU_POPUP:
+            if (nPart==PART_ENTIRE_CONTROL
+                ||  nPart==PART_MENU_ITEM
+                ||  nPart==PART_MENU_ITEM_CHECK_MARK
+                ||  nPart==PART_MENU_ITEM_RADIO_MARK
+                ||  nPart==PART_MENU_SEPARATOR
+                ||  nPart==PART_MENU_SUBMENU_ARROW
+            )
+                return true;
+            break;
+
+//        case CTRL_SLIDER:
+//            if(nPart == PART_TRACK_HORZ_AREA || nPart == PART_TRACK_VERT_AREA)
+//                return true;
+//            break;
+
+//        case CTRL_FIXEDLINE:
+//            if(nPart == PART_SEPARATOR_VERT || nPart == PART_SEPARATOR_HORZ)
+//                return true;
+//            break;
+
+//        case CTRL_LISTHEADER:
+//            if(nPart == PART_BUTTON || nPart == PART_ARROW)
+//                return true;
+//            break;
     }
 
     printf( "Unhandled is native supported for Type: %d, Part %d\n",