Initial import of the CDE 2.1.30 sources from the Open Group.

cde/lib/DtSvc/DtUtil1/WmBackWin.c

@@ -0,0 +1,171 @@
+/*
+ * (c) Copyright 1993, 1994 Hewlett-Packard Company                     *
+ * (c) Copyright 1993, 1994 International Business Machines Corp.       *
+ * (c) Copyright 1993, 1994 Sun Microsystems, Inc.                      *
+ * (c) Copyright 1993, 1994 Novell, Inc.                                *
+ */
+/************************************<+>*************************************
+ ****************************************************************************
+ **
+ **   File:     WmBackWin.c
+ **
+ **   RCS:	$XConsortium: WmBackWin.c /main/4 1995/10/26 15:12:20 rswiston $
+ **   Project:  DT Workspace Manager
+ **
+ **   Description: Identify backdrop windows
+ **
+ **   (c) Copyright 1993 by Hewlett-Packard Company
+ **
+ ****************************************************************************
+ ************************************<+>*************************************/
+#include <stdio.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <Dt/Wsm.h> 
+#include <Xm/Xm.h>
+#include <Xm/AtomMgr.h>
+
+
+/********    Public Function Declarations    ********/
+
+extern Window DtWsmGetCurrentBackdropWindow( 
+                        Display *display,
+                        Window root);
+extern Boolean _DtWsmIsBackdropWindow(
+        Display *display,
+        int screen_num,
+        Window window );
+
+/********    End Public Function Declarations    ********/
+
+
+
+/*************************************<->*************************************
+ *
+ *  Window DtWsmGetCurrentBackdropWindow (display, root)
+ *
+ *
+ *  Description:
+ *  -----------
+ *  Returns the window used for the backdrop for the current workspace
+ *
+ *
+ *  Inputs:
+ *  ------
+ *  display	- display 
+ *  root	- root window
+ *
+ *  Return	- window used for current workspace
+ *                None if no backdrop window or error
+ *
+ *  Comments:
+ *  --------
+ *  
+ * 
+ *************************************<->***********************************/
+Window
+DtWsmGetCurrentBackdropWindow(
+        Display *display ,
+        Window root )
+{
+    Window wReturn = None;
+    Atom aWS;
+    DtWsmWorkspaceInfo *pWsInfo;
+    Status status;
+
+    status = DtWsmGetCurrentWorkspace (display, root, &aWS);
+
+    if (status == Success)
+    {
+        status = DtWsmGetWorkspaceInfo(display, root, aWS, &pWsInfo);
+	if (status == Success)
+	{
+	    if (pWsInfo->numBackdropWindows > 0)
+	    {
+		/* copy backdrop window (there should be at most one) */
+		wReturn = pWsInfo->backdropWindows[0];
+	    }
+
+	    DtWsmFreeWorkspaceInfo (pWsInfo);
+	}
+    }
+
+    return (wReturn);
+
+}  /* END OF FUNCTION DtWsmGetCurrentBackdropWindow */
+
+
+/*************************************<->*************************************
+ *
+ *  Boolean _DtWsmIsBackdropWindow (display, screen_num, window)
+ *
+ *
+ *  Description:
+ *  -----------
+ *  Returns true if the window passed in is a backdrop window.
+ *
+ *
+ *  Inputs:
+ *  ------
+ *  display	- display 
+ *  screen_num	- number of screen we're interested in
+ *  window	- window we want to test
+ *
+ *  Outputs:
+ *  -------
+ *  Return	- True if window is a backdrop window
+ *                False otherwise.
+ *
+ *  Comments:
+ *  --------
+ * 
+ *************************************<->***********************************/
+Boolean 
+_DtWsmIsBackdropWindow(
+        Display *display,
+        int screen_num,
+        Window window )
+{
+    Boolean rval = False;
+    Status status;
+    Atom *pWorkspaceList;
+    int ix, iw, numWorkspaces;
+    DtWsmWorkspaceInfo *pWsInfo;
+    Window root;
+
+    root = XRootWindow (display, screen_num);
+
+    status = DtWsmGetWorkspaceList (display, root, 
+			    &pWorkspaceList, &numWorkspaces);
+
+    if ((status == Success) && 
+	(numWorkspaces > 0) &&
+	(pWsInfo = (DtWsmWorkspaceInfo *) 
+	    malloc (numWorkspaces * sizeof(DtWsmWorkspaceInfo))))
+    {
+	for (ix=0;
+		(!rval) && (ix < numWorkspaces) && (status == Success); 
+		    ix++)
+	{
+	    status = DtWsmGetWorkspaceInfo (display,
+					 root,
+					 pWorkspaceList[ix],
+					 &pWsInfo);
+	    if (status == Success)
+	    {
+		for (iw = 0; iw < pWsInfo->numBackdropWindows; iw++)
+		{
+		    if (pWsInfo->backdropWindows[iw] == window)
+		    {
+			rval = True;
+		    }
+		}
+
+		DtWsmFreeWorkspaceInfo(pWsInfo);
+	    }
+	}
+	XFree ((char *)pWorkspaceList);
+    }
+
+    return (rval);
+}  /* END OF FUNCTION _DtWsmIsBackdropWindow */