* Deskbar's Switcher had an explanation what the window_info::layer field is

about. ServerWindow::GetInfo() now fills in that value following this logic
  as well as further testing.
* Whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26942 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/interface/WindowInfo.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005, Haiku.
+ * Copyright 2005-2008, Haiku.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -21,7 +21,7 @@ struct window_info {
 	int32		client_port;
 	uint32		workspaces;
 
-	int32		layer;			// whatever this is...
+	int32		layer;	// see ServerWindow::GetInfo()
     uint32	  	feel;
     uint32      flags;
 	int32		window_left;

src/servers/app/ServerWindow.cpp

@@ -467,7 +467,19 @@ ServerWindow::GetInfo(window_info& info)
 	info.client_port = fClientLooperPort;
 	info.workspaces = fWindow->Workspaces();
 
-	info.layer = 0; // ToDo: what is this???
+	// logic taken from Switcher comments and experiments
+	if (fWindow->IsHidden())
+		info.layer = 0;
+	else if (fWindow->IsVisible()) {
+		if (fWindow->Feel() == kDesktopWindowFeel)
+			info.layer = 2;
+		else if (fWindow->IsFloating() || fWindow->IsModal())
+			info.layer = 4;
+		else
+			info.layer = 3;
+	} else
+		info.layer = 1;
+
 	info.feel = fWindow->Feel();
 	info.flags = fWindow->Flags();
 	info.window_left = (int)floor(fWindow->Frame().left);