Fix BWindow::_FindView when the window is hidden

_FindView finds a view that contains a specific BPoint (usually used to
dispatch a mouse event to it). It should ignore hidden views, but not if
they are hidden because of their parent.

In particular, if the whole window is hidden (for example, it is used to
draw onto a BBitmap), this should not be taken into account here.

Signed-off-by: Adrien Destugues <[email protected]>

src/kits/interface/Window.cpp

@@ -4016,7 +4016,7 @@ BView*
 BWindow::_FindView(BView* view, BPoint point) const
 {
 	// point is assumed to be already in view's coordinates
-	if (!view->IsHidden() && view->Bounds().Contains(point)) {
+	if (!view->IsHidden(view) && view->Bounds().Contains(point)) {
 		if (view->fFirstChild == NULL)
 			return view;
 		else {