2 files changed, 3691 insertions, 3691 deletions

diff --git a/xorg-server/dix/events.c b/xorg-server/dix/events.c
index df62e839b..8835c5e61 100644
--- a/xorg-server/dix/events.c
+++ b/xorg-server/dix/events.c
@@ -558,7 +558,7 @@ XineramaSetWindowPntrs(DeviceIntPtr pDev, WindowPtr pWin)
 
     if(pWin == screenInfo.screens[0]->root) {
 	int i;
-	for (i = 0; i < PanoramiXNumScreens; i++)
+	FOR_NSCREENS(i)
 	    pSprite->windows[i] = screenInfo.screens[i]->root;
     } else {
 	PanoramiXRes *win;
@@ -569,7 +569,7 @@ XineramaSetWindowPntrs(DeviceIntPtr pDev, WindowPtr pWin)
 	if (rc != Success)
 	    return FALSE;
 
-	for(i = 0; i < PanoramiXNumScreens; i++) {
+	FOR_NSCREENS(i) {
 	    rc = dixLookupWindow(pSprite->windows + i, win->info[i].id,
 				 serverClient, DixReadAccess);
 	    if (rc != Success)  /* window is being unmapped */
@@ -2554,7 +2554,7 @@ PointInBorderSize(WindowPtr pWin, int x, int y)
 	SpritePtr pSprite = inputInfo.pointer->spriteInfo->sprite;
 	int i;
 
-	for(i = 1; i < PanoramiXNumScreens; i++) {
+	FOR_NSCREENS_FORWARD_SKIP(i) {
 	   if(RegionContainsPoint(&pSprite->windows[i]->borderSize,
 				  x + screenInfo.screens[0]->x - screenInfo.screens[i]->x,
 				  y + screenInfo.screens[0]->y - screenInfo.screens[i]->y,
@@ -3153,7 +3153,7 @@ XineramaPointInWindowIsVisible(
     xoff = x + screenInfo.screens[0]->x;
     yoff = y + screenInfo.screens[0]->y;
 
-    for(i = 1; i < PanoramiXNumScreens; i++) {
+    FOR_NSCREENS_FORWARD_SKIP(i) {
 	pWin = inputInfo.pointer->spriteInfo->sprite->windows[i];
 	x = xoff - screenInfo.screens[i]->x;
 	y = yoff - screenInfo.screens[i]->y;
@@ -3360,7 +3360,7 @@ BorderSizeNotEmpty(DeviceIntPtr pDev, WindowPtr pWin)
      if(!noPanoramiXExtension && XineramaSetWindowPntrs(pDev, pWin)) {
 	int i;
 
-	for(i = 1; i < PanoramiXNumScreens; i++) {
+	FOR_NSCREENS_FORWARD_SKIP(i) {
 	    if(RegionNotEmpty(&pDev->spriteInfo->sprite->windows[i]->borderSize))
 		return TRUE;
 	}
diff --git a/xorg-server/dix/window.c b/xorg-server/dix/window.c
index c2cee9198..3668370b3 100644
--- a/xorg-server/dix/window.c
+++ b/xorg-server/dix/window.c
@@ -1,3686 +1,3686 @@
-/*

-

-Copyright (c) 2006, Red Hat, Inc.

-

-Permission is hereby granted, free of charge, to any person obtaining a

-copy of this software and associated documentation files (the "Software"),

-to deal in the Software without restriction, including without limitation

-the rights to use, copy, modify, merge, publish, distribute, sublicense,

-and/or sell copies of the Software, and to permit persons to whom the

-Software is furnished to do so, subject to the following conditions:

-

-The above copyright notice and this permission notice (including the next

-paragraph) shall be included in all copies or substantial portions of the

-Software.

-

-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

-THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

-FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

-DEALINGS IN THE SOFTWARE.

-

-Copyright 1987, 1998  The Open Group

-

-Permission to use, copy, modify, distribute, and sell this software and its

-documentation for any purpose is hereby granted without fee, provided that

-the above copyright notice appear in all copies and that both that

-copyright notice and this permission notice appear in supporting

-documentation.

-

-The above copyright notice and this permission notice shall be included

-in all copies or substantial portions of the Software.

-

-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

-IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR

-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

-OTHER DEALINGS IN THE SOFTWARE.

-

-Except as contained in this notice, the name of The Open Group shall

-not be used in advertising or otherwise to promote the sale, use or

-other dealings in this Software without prior written authorization

-from The Open Group.

-

-

-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,

-

-			All Rights Reserved

-

-Permission to use, copy, modify, and distribute this software and its 

-documentation for any purpose and without fee is hereby granted, 

-provided that the above copyright notice appear in all copies and that

-both that copyright notice and this permission notice appear in 

-supporting documentation, and that the name of Digital not be

-used in advertising or publicity pertaining to distribution of the

-software without specific, written prior permission.  

-

-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING

-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL

-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR

-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,

-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS

-SOFTWARE.

-

-*/

-

-/* The panoramix components contained the following notice */

-/*****************************************************************

-

-Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.

-

-Permission is hereby granted, free of charge, to any person obtaining a copy

-of this software and associated documentation files (the "Software"), to deal

-in the Software without restriction, including without limitation the rights

-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

-copies of the Software.

-

-The above copyright notice and this permission notice shall be included in

-all copies or substantial portions of the Software.

-

-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

-DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,

-BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY,

-WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR

-IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

-

-Except as contained in this notice, the name of Digital Equipment Corporation

-shall not be used in advertising or otherwise to promote the sale, use or other

-dealings in this Software without prior written authorization from Digital

-Equipment Corporation.

-

-******************************************************************/

-

-

-#ifdef HAVE_DIX_CONFIG_H

-#include <dix-config.h>

-#endif

-

-#include "misc.h"

-#include "scrnintstr.h"

-#include "os.h"

-#include "regionstr.h"

-#include "validate.h"

-#include "windowstr.h"

-#include "input.h"

-#include "inputstr.h"

-#include "resource.h"

-#include "colormapst.h"

-#include "cursorstr.h"

-#include "dixstruct.h"

-#include "gcstruct.h"

-#include "servermd.h"

-#ifdef PANORAMIX

-#include "panoramiX.h"

-#include "panoramiXsrv.h"

-#endif

-#include "dixevents.h"

-#include "globals.h"

-#include "mi.h" /* miPaintWindow */

-

-#include "privates.h"

-#include "xace.h"

-

-/******

- * Window stuff for server 

- *

- *    CreateRootWindow, CreateWindow, ChangeWindowAttributes,

- *    GetWindowAttributes, DeleteWindow, DestroySubWindows,

- *    HandleSaveSet, ReparentWindow, MapWindow, MapSubWindows,

- *    UnmapWindow, UnmapSubWindows, ConfigureWindow, CirculateWindow,

- *    ChangeWindowDeviceCursor

- ******/

-

-Bool bgNoneRoot = FALSE;

-

-static unsigned char _back_lsb[4] = {0x88, 0x22, 0x44, 0x11};

-static unsigned char _back_msb[4] = {0x11, 0x44, 0x22, 0x88};

-

-static Bool WindowParentHasDeviceCursor(WindowPtr pWin, 

-                                        DeviceIntPtr pDev, 

-                                        CursorPtr pCurs);

-static Bool 

-WindowSeekDeviceCursor(WindowPtr pWin, 

-                       DeviceIntPtr pDev, 

-                       DevCursNodePtr* pNode, 

-                       DevCursNodePtr* pPrev);

-

-int screenIsSaved = SCREEN_SAVER_OFF;

-

-static Bool TileScreenSaver(ScreenPtr pScreen, int kind);

-

-#define INPUTONLY_LEGAL_MASK (CWWinGravity | CWEventMask | \

-			      CWDontPropagate | CWOverrideRedirect | CWCursor )

-

-#define BOXES_OVERLAP(b1, b2) \

-      (!( ((b1)->x2 <= (b2)->x1)  || \

-	( ((b1)->x1 >= (b2)->x2)) || \

-	( ((b1)->y2 <= (b2)->y1)) || \

-	( ((b1)->y1 >= (b2)->y2)) ) )

-

-#define RedirectSend(pWin) \

-    ((pWin->eventMask|wOtherEventMasks(pWin)) & SubstructureRedirectMask)

-

-#define SubSend(pWin) \

-    ((pWin->eventMask|wOtherEventMasks(pWin)) & SubstructureNotifyMask)

-

-#define StrSend(pWin) \

-    ((pWin->eventMask|wOtherEventMasks(pWin)) & StructureNotifyMask)

-

-#define SubStrSend(pWin,pParent) (StrSend(pWin) || SubSend(pParent))

-

-#ifdef DEBUG

-/******

- * PrintWindowTree

- *    For debugging only

- ******/

-

-static void

-PrintChildren(WindowPtr p1, int indent)

-{

-    WindowPtr p2;

-    int i;

-

-    while (p1)

-    {

-	p2 = p1->firstChild;

-        ErrorF("[dix] ");

-	for (i=0; i<indent; i++) ErrorF(" ");

-	ErrorF("%lx\n", p1->drawable.id);

-	RegionPrint(&p1->clipList);

-	PrintChildren(p2, indent+4);

-	p1 = p1->nextSib;

-    }

-}

-

-static void

-PrintWindowTree(void)

-{

-    int i;

-    WindowPtr pWin, p1;

-

-    for (i=0; i<screenInfo.numScreens; i++)

-    {

-	ErrorF("[dix] WINDOW %d\n", i);

-	pWin = screenInfo.screens[i]->root;

-	RegionPrint(&pWin->clipList);

-	p1 = pWin->firstChild;

-	PrintChildren(p1, 4);

-    }

-}

-#endif

-

-int

-TraverseTree(WindowPtr pWin, VisitWindowProcPtr func, pointer data)

-{

-    int result;

-    WindowPtr pChild;

-

-    if (!(pChild = pWin))

-       return WT_NOMATCH;

-    while (1)

-    {

-	result = (* func)(pChild, data);

-	if (result == WT_STOPWALKING)

-	    return WT_STOPWALKING;

-	if ((result == WT_WALKCHILDREN) && pChild->firstChild)

-	{

-	    pChild = pChild->firstChild;

-	    continue;

-	}

-	while (!pChild->nextSib && (pChild != pWin))

-	    pChild = pChild->parent;

-	if (pChild == pWin)

-	    break;

-	pChild = pChild->nextSib;

-    }

-    return WT_NOMATCH;

-}

-

-/*****

- * WalkTree

- *   Walk the window tree, for SCREEN, preforming FUNC(pWin, data) on

- *   each window.  If FUNC returns WT_WALKCHILDREN, traverse the children,

- *   if it returns WT_DONTWALKCHILDREN, dont.  If it returns WT_STOPWALKING

- *   exit WalkTree.  Does depth-first traverse.

- *****/

-

-int

-WalkTree(ScreenPtr pScreen, VisitWindowProcPtr func, pointer data)

-{

-    return(TraverseTree(pScreen->root, func, data));

-}

-

-/* hack for forcing backing store on all windows */

-int	defaultBackingStore = NotUseful;

-/* hack to force no backing store */

-Bool	disableBackingStore = FALSE;

-Bool	enableBackingStore = FALSE;

-

-static void

-SetWindowToDefaults(WindowPtr pWin)

-{

-    pWin->prevSib = NullWindow;

-    pWin->firstChild = NullWindow;

-    pWin->lastChild = NullWindow;

-

-    pWin->valdata = (ValidatePtr)NULL;

-    pWin->optional = (WindowOptPtr)NULL;

-    pWin->cursorIsNone = TRUE;

-

-    pWin->backingStore = NotUseful;

-    pWin->DIXsaveUnder = FALSE;

-    pWin->backStorage = (pointer) NULL;

-

-    pWin->mapped = FALSE;	    /* off */

-    pWin->realized = FALSE;	/* off */

-    pWin->viewable = FALSE;

-    pWin->visibility = VisibilityNotViewable;

-    pWin->overrideRedirect = FALSE;

-    pWin->saveUnder = FALSE;

-

-    pWin->bitGravity = ForgetGravity;

-    pWin->winGravity = NorthWestGravity;

-

-    pWin->eventMask = 0;

-    pWin->deliverableEvents = 0;

-    pWin->dontPropagate = 0;

-    pWin->forcedBS = FALSE;

-    pWin->redirectDraw = RedirectDrawNone;

-    pWin->forcedBG = FALSE;

-

-#ifdef ROOTLESS

-    pWin->rootlessUnhittable = FALSE;

-#endif

-

-#ifdef COMPOSITE

-    pWin->damagedDescendants = FALSE;

-#endif

-}

-

-static void

-MakeRootTile(WindowPtr pWin)

-{

-    ScreenPtr pScreen = pWin->drawable.pScreen;

-    GCPtr pGC;

-    unsigned char back[128];

-    int len = BitmapBytePad(sizeof(long));

-    unsigned char *from, *to;

-    int i, j;

-

-    pWin->background.pixmap = (*pScreen->CreatePixmap)(pScreen, 4, 4,

-						    pScreen->rootDepth, 0);

-

-    pWin->backgroundState = BackgroundPixmap;

-    pGC = GetScratchGC(pScreen->rootDepth, pScreen);

-    if (!pWin->background.pixmap || !pGC)

-	FatalError("could not create root tile");

-

-    {

-	ChangeGCVal attributes[2];

-

-	attributes[0].val = pScreen->whitePixel;

-	attributes[1].val = pScreen->blackPixel;

-

-	(void)ChangeGC(NullClient, pGC, GCForeground | GCBackground, attributes);

-    }

-

-   ValidateGC((DrawablePtr)pWin->background.pixmap, pGC);

-

-   from = (screenInfo.bitmapBitOrder == LSBFirst) ? _back_lsb : _back_msb;

-   to = back;

-

-   for (i = 4; i > 0; i--, from++)

-	for (j = len; j > 0; j--)

-	    *to++ = *from;

-

-   (*pGC->ops->PutImage)((DrawablePtr)pWin->background.pixmap, pGC, 1,

-		    0, 0, len, 4, 0, XYBitmap, (char *)back);

-

-   FreeScratchGC(pGC);

-

-}

-

-/*****

- * CreateRootWindow

- *    Makes a window at initialization time for specified screen

- *****/

-

-Bool

-CreateRootWindow(ScreenPtr pScreen)

-{

-    WindowPtr	pWin;

-    BoxRec	box;

-    PixmapFormatRec *format;

-

-    pWin = dixAllocateObjectWithPrivates(WindowRec, PRIVATE_WINDOW);

-    if (!pWin)

-	return FALSE;

-

-    pScreen->screensaver.pWindow = NULL;

-    pScreen->screensaver.wid = FakeClientID(0);

-    pScreen->screensaver.ExternalScreenSaver = NULL;

-    screenIsSaved = SCREEN_SAVER_OFF;

-

-    pScreen->root = pWin;

-

-    pWin->drawable.pScreen = pScreen;

-    pWin->drawable.type = DRAWABLE_WINDOW;

-

-    pWin->drawable.depth = pScreen->rootDepth;

-    for (format = screenInfo.formats;

-	 format->depth != pScreen->rootDepth;

-	 format++)

-	;

-    pWin->drawable.bitsPerPixel = format->bitsPerPixel;

-

-    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;

-

-    pWin->parent = NullWindow;

-    SetWindowToDefaults(pWin);

-

-    pWin->optional = malloc(sizeof (WindowOptRec));

-    if (!pWin->optional)

-        return FALSE;

-

-    pWin->optional->dontPropagateMask = 0;

-    pWin->optional->otherEventMasks = 0;

-    pWin->optional->otherClients = NULL;

-    pWin->optional->passiveGrabs = NULL;

-    pWin->optional->userProps = NULL;

-    pWin->optional->backingBitPlanes = ~0L;

-    pWin->optional->backingPixel = 0;

-    pWin->optional->boundingShape = NULL;

-    pWin->optional->clipShape = NULL;

-    pWin->optional->inputShape = NULL;

-    pWin->optional->inputMasks = NULL;

-    pWin->optional->deviceCursors = NULL;

-    pWin->optional->colormap = pScreen->defColormap;

-    pWin->optional->visual = pScreen->rootVisual;

-

-    pWin->nextSib = NullWindow;

-

-    pWin->drawable.id = FakeClientID(0);

-

-    pWin->origin.x = pWin->origin.y = 0;

-    pWin->drawable.height = pScreen->height;

-    pWin->drawable.width = pScreen->width;

-    pWin->drawable.x = pWin->drawable.y = 0;

-

-    box.x1 = 0;

-    box.y1 = 0;

-    box.x2 = pScreen->width;

-    box.y2 = pScreen->height;

-    RegionInit(&pWin->clipList, &box, 1);

-    RegionInit(&pWin->winSize, &box, 1);

-    RegionInit(&pWin->borderSize, &box, 1);

-    RegionInit(&pWin->borderClip, &box, 1);

-

-    pWin->drawable.class = InputOutput;

-    pWin->optional->visual = pScreen->rootVisual;

-

-    pWin->backgroundState = BackgroundPixel;

-    pWin->background.pixel = pScreen->whitePixel;

-

-    pWin->borderIsPixel = TRUE;

-    pWin->border.pixel = pScreen->blackPixel;

-    pWin->borderWidth = 0;

-

-    /*  security creation/labeling check

-     */

-    if (XaceHook(XACE_RESOURCE_ACCESS, serverClient, pWin->drawable.id,

-		 RT_WINDOW, pWin, RT_NONE, NULL, DixCreateAccess))

-	return FALSE;

-

-    if (!AddResource(pWin->drawable.id, RT_WINDOW, (pointer)pWin))

-	return FALSE;

-

-    if (disableBackingStore)

-	pScreen->backingStoreSupport = NotUseful;

-    if (enableBackingStore)

-	pScreen->backingStoreSupport = Always;

-

-    pScreen->saveUnderSupport = NotUseful;

-

-    return TRUE;

-}

-

-void

-InitRootWindow(WindowPtr pWin)

-{

-    ScreenPtr pScreen = pWin->drawable.pScreen;

-    int backFlag = CWBorderPixel | CWCursor | CWBackingStore;

-

-    if (!(*pScreen->CreateWindow)(pWin))

-	return; /* XXX */

-    (*pScreen->PositionWindow)(pWin, 0, 0);

-

-    pWin->cursorIsNone = FALSE;

-    pWin->optional->cursor = rootCursor;

-    rootCursor->refcnt++;

-

-

-    if (party_like_its_1989) {

-        MakeRootTile(pWin);

-        backFlag |= CWBackPixmap;

-    } else if (pScreen->canDoBGNoneRoot && bgNoneRoot) {

-        pWin->backgroundState = XaceBackgroundNoneState(pWin);

-        pWin->background.pixel = pScreen->whitePixel;

-        backFlag |= CWBackPixmap;

-    } else {

-	if (whiteRoot)

-            pWin->background.pixel = pScreen->whitePixel;

-        else

-            pWin->background.pixel = pScreen->blackPixel;

-        backFlag |= CWBackPixel;

-    } 

-

-    pWin->backingStore = defaultBackingStore;

-    pWin->forcedBS = (defaultBackingStore != NotUseful);

-    /* We SHOULD check for an error value here XXX */

-    (*pScreen->ChangeWindowAttributes)(pWin, backFlag);

-

-    MapWindow(pWin, serverClient);

-}

-

-/* Set the region to the intersection of the rectangle and the

- * window's winSize.  The window is typically the parent of the

- * window from which the region came.

- */

-

-static void

-ClippedRegionFromBox(WindowPtr pWin, RegionPtr Rgn,

-                     int x, int y,

-                     int w, int h)

-{

-    BoxRec box = *RegionExtents(&pWin->winSize);

-

-    /* we do these calculations to avoid overflows */

-    if (x > box.x1)

-	box.x1 = x;

-    if (y > box.y1)

-	box.y1 = y;

-    x += w;

-    if (x < box.x2)

-	box.x2 = x;

-    y += h;

-    if (y < box.y2)

-	box.y2 = y;

-    if (box.x1 > box.x2)

-	box.x2 = box.x1;

-    if (box.y1 > box.y2)

-	box.y2 = box.y1;

-    RegionReset(Rgn, &box);

-    RegionIntersect(Rgn, Rgn, &pWin->winSize);

-}

-

-static RealChildHeadProc realChildHeadProc = NULL;

-

-void

-RegisterRealChildHeadProc (RealChildHeadProc proc)

-{

-    realChildHeadProc = proc;

-}

-

-

-WindowPtr

-RealChildHead(WindowPtr pWin)

-{

-    if (realChildHeadProc) {

-	return realChildHeadProc (pWin);

-    }

-

-    if (!pWin->parent &&

-	(screenIsSaved == SCREEN_SAVER_ON) &&

-	(HasSaverWindow (pWin->drawable.pScreen)))

-	return pWin->firstChild;

-    else

-	return NullWindow;

-}

-

-/*****

- * CreateWindow

- *    Makes a window in response to client request 

- *****/

-

-WindowPtr

-CreateWindow(Window wid, WindowPtr pParent, int x, int y, unsigned w,

-             unsigned h, unsigned bw, unsigned class, Mask vmask, XID *vlist,

-             int depth, ClientPtr client, VisualID visual, int *error)

-{

-    WindowPtr pWin;

-    WindowPtr pHead;

-    ScreenPtr pScreen;

-    xEvent event;

-    int idepth, ivisual;

-    Bool fOK;

-    DepthPtr pDepth;

-    PixmapFormatRec *format;

-    WindowOptPtr ancwopt;

-

-    if (class == CopyFromParent)

-	class = pParent->drawable.class;

-

-    if ((class != InputOutput) && (class != InputOnly))

-    {

-	*error = BadValue;

-	client->errorValue = class;

-	return NullWindow;

-    }

-

-    if ((class != InputOnly) && (pParent->drawable.class == InputOnly))

-    {

-	*error = BadMatch;

-	return NullWindow;

-    }

-

-    if ((class == InputOnly) && ((bw != 0) || (depth != 0)))

-    {

-	*error = BadMatch;

-	return NullWindow;

-    }

-

-    pScreen = pParent->drawable.pScreen;

-    if ((class == InputOutput) && (depth == 0))

-	 depth = pParent->drawable.depth;

-    ancwopt = pParent->optional;

-    if (!ancwopt)

-	ancwopt = FindWindowWithOptional(pParent)->optional;

-    if (visual == CopyFromParent) {

-	visual = ancwopt->visual;

-    }

-

-    /* Find out if the depth and visual are acceptable for this Screen */

-    if ((visual != ancwopt->visual) || (depth != pParent->drawable.depth))

-    {

-	fOK = FALSE;

-	for(idepth = 0; idepth < pScreen->numDepths; idepth++)

-	{

-	    pDepth = (DepthPtr) &pScreen->allowedDepths[idepth];

-	    if ((depth == pDepth->depth) || (depth == 0))

-	    {

-		for (ivisual = 0; ivisual < pDepth->numVids; ivisual++)

-		{

-		    if (visual == pDepth->vids[ivisual])

-		    {

-			fOK = TRUE;

-			break;

-		    }

-		}

-	    }

-	}

-	if (fOK == FALSE)

-	{

-	    *error = BadMatch;

-	    return NullWindow;

-	}

-    }

-

-    if (((vmask & (CWBorderPixmap | CWBorderPixel)) == 0) &&

-	(class != InputOnly) &&

-	(depth != pParent->drawable.depth))

-    {

-	*error = BadMatch;

-	return NullWindow;

-    }

-

-    if (((vmask & CWColormap) == 0) &&

-	(class != InputOnly) &&

-	((visual != ancwopt->visual) || (ancwopt->colormap == None)))

-    {

-	*error = BadMatch;

-	return NullWindow;

-    }

-

-    pWin = dixAllocateObjectWithPrivates(WindowRec, PRIVATE_WINDOW);

-    if (!pWin)

-    {

-	*error = BadAlloc;

-	return NullWindow;

-    }

-    pWin->drawable = pParent->drawable;

-    pWin->drawable.depth = depth;

-    if (depth == pParent->drawable.depth)

-	pWin->drawable.bitsPerPixel = pParent->drawable.bitsPerPixel;

-    else

-    {

-	for (format = screenInfo.formats; format->depth != depth; format++)

-	    ;

-	pWin->drawable.bitsPerPixel = format->bitsPerPixel;

-    }

-    if (class == InputOnly)

-	pWin->drawable.type = (short) UNDRAWABLE_WINDOW;

-    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;

-

-    pWin->drawable.id = wid;

-    pWin->drawable.class = class;

-

-    pWin->parent = pParent;

-    SetWindowToDefaults(pWin);

-

-    if (visual != ancwopt->visual)

-    {

-	if (!MakeWindowOptional (pWin))

-	{

-	    dixFreeObjectWithPrivates(pWin, PRIVATE_WINDOW);

-	    *error = BadAlloc;

-	    return NullWindow;

-	}

-	pWin->optional->visual = visual;

-	pWin->optional->colormap = None;

-    }

-

-    pWin->borderWidth = bw;

-

-    /*  security creation/labeling check

-     */

-    *error = XaceHook(XACE_RESOURCE_ACCESS, client, wid, RT_WINDOW, pWin,

-		RT_WINDOW, pWin->parent, DixCreateAccess|DixSetAttrAccess);

-    if (*error != Success) {

-	dixFreeObjectWithPrivates(pWin, PRIVATE_WINDOW);

-	return NullWindow;

-    }

-

-    pWin->backgroundState = XaceBackgroundNoneState(pWin);

-    pWin->background.pixel = pScreen->whitePixel;

-

-    pWin->borderIsPixel = pParent->borderIsPixel;

-    pWin->border = pParent->border;

-    if (pWin->borderIsPixel == FALSE)

-	pWin->border.pixmap->refcnt++;

-		

-    pWin->origin.x = x + (int)bw;

-    pWin->origin.y = y + (int)bw;

-    pWin->drawable.width = w;

-    pWin->drawable.height = h;

-    pWin->drawable.x = pParent->drawable.x + x + (int)bw;

-    pWin->drawable.y = pParent->drawable.y + y + (int)bw;

-

-	/* set up clip list correctly for unobscured WindowPtr */

-    RegionNull(&pWin->clipList);

-    RegionNull(&pWin->borderClip);

-    RegionNull(&pWin->winSize);

-    RegionNull(&pWin->borderSize);

-

-    pHead = RealChildHead(pParent);

-    if (pHead)

-    {

-	pWin->nextSib = pHead->nextSib;

-	if (pHead->nextSib)

-	    pHead->nextSib->prevSib = pWin;

-	else

-	    pParent->lastChild = pWin;

-	pHead->nextSib = pWin;

-	pWin->prevSib = pHead;

-    }

-    else

-    {

-	pWin->nextSib = pParent->firstChild;

-	if (pParent->firstChild)

-	    pParent->firstChild->prevSib = pWin;

-	else

-	    pParent->lastChild = pWin;

-	pParent->firstChild = pWin;

-    }

-

-    SetWinSize (pWin);

-    SetBorderSize (pWin);

-

-    /* We SHOULD check for an error value here XXX */

-    if (!(*pScreen->CreateWindow)(pWin))

-    {

-	*error = BadAlloc;

-	DeleteWindow(pWin, None);

-	return NullWindow;

-    }

-    /* We SHOULD check for an error value here XXX */

-    (*pScreen->PositionWindow)(pWin, pWin->drawable.x, pWin->drawable.y);

-

-    if (!(vmask & CWEventMask))

-	RecalculateDeliverableEvents(pWin);

-

-    if (vmask)

-	*error = ChangeWindowAttributes(pWin, vmask, vlist, wClient (pWin));

-    else

-	*error = Success;

-

-    if (*error != Success)

-    {

-	DeleteWindow(pWin, None);

-	return NullWindow;

-    }

-    if (!(vmask & CWBackingStore) && (defaultBackingStore != NotUseful))

-    {

-	XID value = defaultBackingStore;

-	(void)ChangeWindowAttributes(pWin, CWBackingStore, &value, wClient (pWin));

-	pWin->forcedBS = TRUE;

-    }

-

-    if (SubSend(pParent))

-    {

-	memset(&event, 0, sizeof(xEvent));

-	event.u.u.type = CreateNotify;

-	event.u.createNotify.window = wid;

-	event.u.createNotify.parent = pParent->drawable.id;

-	event.u.createNotify.x = x;

-	event.u.createNotify.y = y;

-	event.u.createNotify.width = w;

-	event.u.createNotify.height = h;

-	event.u.createNotify.borderWidth = bw;

-	event.u.createNotify.override = pWin->overrideRedirect;

-	DeliverEvents(pParent, &event, 1, NullWindow);		

-    }

-    return pWin;

-}

-

-static void

-DisposeWindowOptional (WindowPtr pWin)

-{

-    if (!pWin->optional)

-	return;

-    /*

-     * everything is peachy.  Delete the optional record

-     * and clean up

-     */

-    if (pWin->optional->cursor)

-    {

-	FreeCursor (pWin->optional->cursor, (Cursor)0);

-	pWin->cursorIsNone = FALSE;

-    }

-    else

-	pWin->cursorIsNone = TRUE;

-

-    if (pWin->optional->deviceCursors)

-    {

-        DevCursorList pList;

-        DevCursorList pPrev;

-        pList = pWin->optional->deviceCursors;

-        while(pList)

-        {

-            if (pList->cursor)

-                FreeCursor(pList->cursor, (XID)0);

-            pPrev = pList;

-            pList = pList->next;

-            free(pPrev);

-        }

-        pWin->optional->deviceCursors = NULL;

-    }

-

-    free(pWin->optional);

-    pWin->optional = NULL;

-}

-

-static void

-FreeWindowResources(WindowPtr pWin)

-{

-    ScreenPtr pScreen = pWin->drawable.pScreen;

-

-    DeleteWindowFromAnySaveSet(pWin);

-    DeleteWindowFromAnySelections(pWin);

-    DeleteWindowFromAnyEvents(pWin, TRUE);

-    RegionUninit(&pWin->clipList);

-    RegionUninit(&pWin->winSize);

-    RegionUninit(&pWin->borderClip);

-    RegionUninit(&pWin->borderSize);

-    if (wBoundingShape (pWin))

-	RegionDestroy(wBoundingShape (pWin));

-    if (wClipShape (pWin))

-	RegionDestroy(wClipShape (pWin));

-    if (wInputShape (pWin))

-	RegionDestroy(wInputShape (pWin));

-    if (pWin->borderIsPixel == FALSE)

-	(*pScreen->DestroyPixmap)(pWin->border.pixmap);

-    if (pWin->backgroundState == BackgroundPixmap)

-	(*pScreen->DestroyPixmap)(pWin->background.pixmap);

-

-    DeleteAllWindowProperties(pWin);

-    /* We SHOULD check for an error value here XXX */

-    (*pScreen->DestroyWindow)(pWin);

-    DisposeWindowOptional (pWin);

-}

-

-static void

-CrushTree(WindowPtr pWin)

-{

-    WindowPtr pChild, pSib, pParent;

-    UnrealizeWindowProcPtr UnrealizeWindow;

-    xEvent event;

-

-    if (!(pChild = pWin->firstChild))

-	return;

-    UnrealizeWindow = pWin->drawable.pScreen->UnrealizeWindow;

-    while (1)

-    {

-	if (pChild->firstChild)

-	{

-	    pChild = pChild->firstChild;

-	    continue;

-	}

-	while (1)

-	{

-	    pParent = pChild->parent;

-	    if (SubStrSend(pChild, pParent))

-	    {

-		memset(&event, 0, sizeof(xEvent));

-		event.u.u.type = DestroyNotify;

-		event.u.destroyNotify.window = pChild->drawable.id;

-		DeliverEvents(pChild, &event, 1, NullWindow);

-	    }

-	    FreeResource(pChild->drawable.id, RT_WINDOW);

-	    pSib = pChild->nextSib;

-	    pChild->viewable = FALSE;

-	    if (pChild->realized)

-	    {

-		pChild->realized = FALSE;

-		(*UnrealizeWindow)(pChild);

-	    }

-	    FreeWindowResources(pChild);

-	    dixFreeObjectWithPrivates(pChild, PRIVATE_WINDOW);

-	    if ( (pChild = pSib) )

-		break;

-	    pChild = pParent;

-	    pChild->firstChild = NullWindow;

-	    pChild->lastChild = NullWindow;

-	    if (pChild == pWin)

-		return;

-	}

-    }

-}

-	

-/*****

- *  DeleteWindow

- *	 Deletes child of window then window itself

- *	 If wid is None, don't send any events

- *****/

-

-int

-DeleteWindow(pointer value, XID wid)

- {

-    WindowPtr pParent;

-    WindowPtr pWin = (WindowPtr)value;

-    xEvent event;

-

-    UnmapWindow(pWin, FALSE);

-

-    CrushTree(pWin);

-

-    pParent = pWin->parent;

-    if (wid && pParent && SubStrSend(pWin, pParent))

-    {

-	memset(&event, 0, sizeof(xEvent));

-	event.u.u.type = DestroyNotify;

-	event.u.destroyNotify.window = pWin->drawable.id;

-	DeliverEvents(pWin, &event, 1, NullWindow);

-    }

-

-    FreeWindowResources(pWin);

-    if (pParent)

-    {

-	if (pParent->firstChild == pWin)

-	    pParent->firstChild = pWin->nextSib;

-	if (pParent->lastChild == pWin)

-	    pParent->lastChild = pWin->prevSib;

-	if (pWin->nextSib)

-	    pWin->nextSib->prevSib = pWin->prevSib;

-	if (pWin->prevSib)

-	    pWin->prevSib->nextSib = pWin->nextSib;

-    }

-    else

-	pWin->drawable.pScreen->root = NULL;

-    dixFreeObjectWithPrivates(pWin, PRIVATE_WINDOW);

-    return Success;

-}

-

-int

-DestroySubwindows(WindowPtr pWin, ClientPtr client)

-{

-    /* XXX

-     * The protocol is quite clear that each window should be

-     * destroyed in turn, however, unmapping all of the first

-     * eliminates most of the calls to ValidateTree.  So,

-     * this implementation is incorrect in that all of the

-     * UnmapNotifies occur before all of the DestroyNotifies.

-     * If you care, simply delete the call to UnmapSubwindows.

-     */

-    UnmapSubwindows(pWin);

-    while (pWin->lastChild) {

-	int rc = XaceHook(XACE_RESOURCE_ACCESS, client,

-			  pWin->lastChild->drawable.id, RT_WINDOW,

-			  pWin->lastChild, RT_NONE, NULL, DixDestroyAccess);

-	if (rc != Success)

-	    return rc;

-	FreeResource(pWin->lastChild->drawable.id, RT_NONE);

-    }

-    return Success;

-}

-

-static void

-SetRootWindowBackground(WindowPtr pWin, ScreenPtr pScreen, Mask *index2)

-{

-    /* following the protocol: "Changing the background of a root window to

-     * None or ParentRelative restores the default background pixmap" */

-    if (bgNoneRoot) {

-	pWin->backgroundState = XaceBackgroundNoneState(pWin);

-	pWin->background.pixel = pScreen->whitePixel;

-    }

-    else if (party_like_its_1989)

-	MakeRootTile(pWin);

-    else {

-	if (whiteRoot)

-	    pWin->background.pixel = pScreen->whitePixel;

-	else

-	    pWin->background.pixel = pScreen->blackPixel;

-	*index2 = CWBackPixel;

-    }

-}

-

-/*****

- *  ChangeWindowAttributes

- *   

- *  The value-mask specifies which attributes are to be changed; the

- *  value-list contains one value for each one bit in the mask, from least

- *  to most significant bit in the mask.  

- *****/

- 

-int

-ChangeWindowAttributes(WindowPtr pWin, Mask vmask, XID *vlist, ClientPtr client)

-{

-    XID *pVlist;

-    PixmapPtr pPixmap;

-    Pixmap pixID;

-    CursorPtr pCursor, pOldCursor;

-    Cursor cursorID;

-    WindowPtr pChild;

-    Colormap cmap;

-    ColormapPtr	pCmap;

-    xEvent xE;

-    int error, rc;

-    ScreenPtr pScreen;

-    Mask index2, tmask, vmaskCopy = 0;

-    unsigned int val;

-    Bool checkOptional = FALSE, borderRelative = FALSE;

-

-    if ((pWin->drawable.class == InputOnly) && (vmask & (~INPUTONLY_LEGAL_MASK)))

-	return BadMatch;

-

-    error = Success;

-    pScreen = pWin->drawable.pScreen;

-    pVlist = vlist;

-    tmask = vmask;

-    while (tmask)

-    {

-	index2 = (Mask) lowbit (tmask);

-	tmask &= ~index2;

-	switch (index2)

-	{

-	  case CWBackPixmap:

-	    pixID = (Pixmap )*pVlist;

-	    pVlist++;

-	    if (pWin->backgroundState == ParentRelative)

-		borderRelative = TRUE;

-	    if (pixID == None)

-	    {

-		if (pWin->backgroundState == BackgroundPixmap)

-		    (*pScreen->DestroyPixmap)(pWin->background.pixmap);

-		if (!pWin->parent)

-		    SetRootWindowBackground(pWin, pScreen, &index2);

-		else {

-		    pWin->backgroundState = XaceBackgroundNoneState(pWin);

-		    pWin->background.pixel = pScreen->whitePixel;

-		}

-	    }

-	    else if (pixID == ParentRelative)

-	    {

-		if (pWin->parent &&

-		    pWin->drawable.depth != pWin->parent->drawable.depth)

-		{

-		    error = BadMatch;

-		    goto PatchUp;

-		}

-		if (pWin->backgroundState == BackgroundPixmap)

-		    (*pScreen->DestroyPixmap)(pWin->background.pixmap);

-		if (!pWin->parent)

-		    SetRootWindowBackground(pWin, pScreen, &index2);

-		else

-		    pWin->backgroundState = ParentRelative;

-		borderRelative = TRUE;

-		/* Note that the parent's backgroundTile's refcnt is NOT

-		 * incremented. */

-	    }

-	    else

-	    {	

-		rc = dixLookupResourceByType((pointer *)&pPixmap, pixID, RT_PIXMAP,

-				       client, DixReadAccess);

-		if (rc == Success)

-		{

-		    if	((pPixmap->drawable.depth != pWin->drawable.depth) ||

-			 (pPixmap->drawable.pScreen != pScreen))

-		    {

-			error = BadMatch;

-			goto PatchUp;

-		    }

-		    if (pWin->backgroundState == BackgroundPixmap)

-			(*pScreen->DestroyPixmap)(pWin->background.pixmap);

-		    pWin->backgroundState = BackgroundPixmap;

-		    pWin->background.pixmap = pPixmap;

-		    pPixmap->refcnt++;

-		}

-		else

-		{

-		    error = rc;

-		    client->errorValue = pixID;

-		    goto PatchUp;

-		}

-	    }

-	    break;

-	  case CWBackPixel:

-	    if (pWin->backgroundState == ParentRelative)

-		borderRelative = TRUE;

-	    if (pWin->backgroundState == BackgroundPixmap)

-		(*pScreen->DestroyPixmap)(pWin->background.pixmap);

-	    pWin->backgroundState = BackgroundPixel;

-	    pWin->background.pixel = (CARD32 ) *pVlist;

-		   /* background pixel overrides background pixmap,

-		      so don't let the ddx layer see both bits */

-	    vmaskCopy &= ~CWBackPixmap;

-	    pVlist++;

-	    break;

-	  case CWBorderPixmap:

-	    pixID = (Pixmap ) *pVlist;

-	    pVlist++;

-	    if (pixID == CopyFromParent)

-	    {

-		if (!pWin->parent ||

-		    (pWin->drawable.depth != pWin->parent->drawable.depth))

-		{

-		    error = BadMatch;

-		    goto PatchUp;

-		}

-		if (pWin->parent->borderIsPixel == TRUE) {

-		    if (pWin->borderIsPixel == FALSE)

-			(*pScreen->DestroyPixmap)(pWin->border.pixmap);

-		    pWin->border = pWin->parent->border;

-		    pWin->borderIsPixel = TRUE;

-		    index2 = CWBorderPixel;

-		    break;

-		}

-		else

-		{

-		    pixID = pWin->parent->border.pixmap->drawable.id;

-		}

-	    }

-	    rc = dixLookupResourceByType((pointer *)&pPixmap, pixID, RT_PIXMAP,

-				   client, DixReadAccess);

-	    if (rc == Success)

-	    {

-		if ((pPixmap->drawable.depth != pWin->drawable.depth) ||

-		    (pPixmap->drawable.pScreen != pScreen))

-		{

-		    error = BadMatch;

-		    goto PatchUp;

-		}

-		if (pWin->borderIsPixel == FALSE)

-		    (*pScreen->DestroyPixmap)(pWin->border.pixmap);

-		pWin->borderIsPixel = FALSE;

-		pWin->border.pixmap = pPixmap;

-		pPixmap->refcnt++;

-	    }

-	    else

-	    {

-		error = rc;

-		client->errorValue = pixID;

-		goto PatchUp;

-	    }

-	    break;

-	  case CWBorderPixel:

-	    if (pWin->borderIsPixel == FALSE)

-		(*pScreen->DestroyPixmap)(pWin->border.pixmap);

-	    pWin->borderIsPixel = TRUE;

-	    pWin->border.pixel = (CARD32) *pVlist;

-		    /* border pixel overrides border pixmap,

-		       so don't let the ddx layer see both bits */

-	    vmaskCopy &= ~CWBorderPixmap;

-	    pVlist++;

-	    break;

-	  case CWBitGravity:

-	    val = (CARD8 )*pVlist;

-	    pVlist++;

-	    if (val > StaticGravity)

-	    {

-		error = BadValue;

-		client->errorValue = val;

-		goto PatchUp;

-	    }

-	    pWin->bitGravity = val;

-	    break;

-	  case CWWinGravity:

-	    val = (CARD8 )*pVlist;

-	    pVlist++;

-	    if (val > StaticGravity)

-	    {

-		error = BadValue;

-		client->errorValue = val;

-		goto PatchUp;

-	    }

-	    pWin->winGravity = val;

-	    break;

-	  case CWBackingStore:

-	    val = (CARD8 )*pVlist;

-	    pVlist++;

-	    if ((val != NotUseful) && (val != WhenMapped) && (val != Always))

-	    {

-		error = BadValue;

-		client->errorValue = val;

-		goto PatchUp;

-	    }

-	    pWin->backingStore = val;

-	    pWin->forcedBS = FALSE;

-	    break;

-	  case CWBackingPlanes:

-	    if (pWin->optional || ((CARD32)*pVlist != (CARD32)~0L)) {

-		if (!pWin->optional && !MakeWindowOptional (pWin))

-		{

-		    error = BadAlloc;

-		    goto PatchUp;

-		}

-		pWin->optional->backingBitPlanes = (CARD32) *pVlist;

-		if ((CARD32)*pVlist == (CARD32)~0L)

-		    checkOptional = TRUE;

-	    }

-	    pVlist++;

-	    break;

-	  case CWBackingPixel:

-	    if (pWin->optional || (CARD32) *pVlist) {

-		if (!pWin->optional && !MakeWindowOptional (pWin))

-		{

-		    error = BadAlloc;

-		    goto PatchUp;

-		}

-		pWin->optional->backingPixel = (CARD32) *pVlist;

-		if (!*pVlist)

-		    checkOptional = TRUE;

-	    }

-	    pVlist++;

-	    break;

-	  case CWSaveUnder:

-	    val = (BOOL) *pVlist;

-	    pVlist++;

-	    if ((val != xTrue) && (val != xFalse))

-	    {

-		error = BadValue;

-		client->errorValue = val;

-		goto PatchUp;

-	    }

-	    pWin->saveUnder = val;

-	    break;

-	  case CWEventMask:

-	    rc = EventSelectForWindow(pWin, client, (Mask )*pVlist);

-	    if (rc)

-	    {

-		error = rc;

-		goto PatchUp;

-	    }

-	    pVlist++;

-	    break;

-	  case CWDontPropagate:

-	    rc = EventSuppressForWindow(pWin, client, (Mask )*pVlist,

-					    &checkOptional);

-	    if (rc)

-	    {

-		error = rc;

-		goto PatchUp;

-	    }

-	    pVlist++;

-	    break;

-	  case CWOverrideRedirect:

-	    val = (BOOL ) *pVlist;

-	    pVlist++;

-	    if ((val != xTrue) && (val != xFalse))

-	    {

-		error = BadValue;

-		client->errorValue = val;

-		goto PatchUp;

-	    }

-	    if (val == xTrue) {

-		rc = XaceHook(XACE_RESOURCE_ACCESS, client, pWin->drawable.id,

-			      RT_WINDOW, pWin, RT_NONE, NULL, DixGrabAccess);

-		if (rc != Success) {

-		    error = rc;

-		    client->errorValue = pWin->drawable.id;

-		    goto PatchUp;

-		}

-	    }

-	    pWin->overrideRedirect = val;

-	    break;

-	  case CWColormap:

-	    cmap = (Colormap) *pVlist;

-	    pVlist++;

-	    if (cmap == CopyFromParent)

-	    {

-		if (pWin->parent &&

-		    (!pWin->optional ||

-		     pWin->optional->visual == wVisual (pWin->parent)))

-		{

-		    cmap = wColormap (pWin->parent);

-		}

-		else

-		    cmap = None;

-	    }

-	    if (cmap == None)

-	    {

-		error = BadMatch;

-		goto PatchUp;

-	    }

-	    rc = dixLookupResourceByType((pointer *)&pCmap, cmap, RT_COLORMAP,

-				   client, DixUseAccess);

-	    if (rc != Success)

-	    {

-		error = rc;

-		client->errorValue = cmap;

-		goto PatchUp;

-	    }

-	    if (pCmap->pVisual->vid != wVisual (pWin) ||

-		pCmap->pScreen != pScreen)

-	    {

-		error = BadMatch;

-		goto PatchUp;

-	    }

-	    if (cmap != wColormap (pWin))

-	    {

-		if (!pWin->optional)

-		{

-		    if (!MakeWindowOptional (pWin))

-		    {

-			error = BadAlloc;

-			goto PatchUp;

-		    }

-		}

-		else if (pWin->parent && cmap == wColormap (pWin->parent))

-		    checkOptional = TRUE;

-

-		/*

-		 * propagate the original colormap to any children

-		 * inheriting it

-		 */

-

-		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)

-		{

-		    if (!pChild->optional && !MakeWindowOptional (pChild))

-		    {

-			error = BadAlloc;

-			goto PatchUp;

-		    }

-		}

-

-		pWin->optional->colormap = cmap;

-

-		/*

-		 * check on any children now matching the new colormap

-		 */

-

-		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)

-		{

-		    if (pChild->optional->colormap == cmap)

-			CheckWindowOptionalNeed (pChild);

-		}

-	

-		xE.u.u.type = ColormapNotify;

-		xE.u.colormap.window = pWin->drawable.id;

-		xE.u.colormap.colormap = cmap;

-		xE.u.colormap.new = xTrue;

-		xE.u.colormap.state = IsMapInstalled(cmap, pWin);

-		DeliverEvents(pWin, &xE, 1, NullWindow);

-	    }

-	    break;

-	  case CWCursor:

-	    cursorID = (Cursor ) *pVlist;

-	    pVlist++;

-	    /*

-	     * install the new

-	     */

-	    if ( cursorID == None)

-	    {

-		if (pWin == pWin->drawable.pScreen->root)

-		    pCursor = rootCursor;

-		else

-		    pCursor = (CursorPtr) None;

-	    }

-	    else

-	    {

-		rc = dixLookupResourceByType((pointer *)&pCursor, cursorID,

-				       RT_CURSOR, client, DixUseAccess);

-		if (rc != Success)

-		{

-		    error = rc;

-		    client->errorValue = cursorID;

-		    goto PatchUp;

-		}

-	    }

-

-	    if (pCursor != wCursor (pWin))

-	    {

-		/*

-		 * patch up child windows so they don't lose cursors.

-		 */

-

-		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)

-		{

-		    if (!pChild->optional && !pChild->cursorIsNone &&

-			!MakeWindowOptional (pChild))

-		    {

-			error = BadAlloc;

-			goto PatchUp;

-		    }

-		}

-

-		pOldCursor = 0;

-		if (pCursor == (CursorPtr) None)

-		{

-		    pWin->cursorIsNone = TRUE;

-		    if (pWin->optional)

-		    {

-			pOldCursor = pWin->optional->cursor;

-			pWin->optional->cursor = (CursorPtr) None;

-			checkOptional = TRUE;

-		    }

-		} else {

-		    if (!pWin->optional)

-		    {

-			if (!MakeWindowOptional (pWin))

-			{

-			    error = BadAlloc;

-			    goto PatchUp;

-			}

-		    }

-		    else if (pWin->parent && pCursor == wCursor (pWin->parent))

-			checkOptional = TRUE;

-		    pOldCursor = pWin->optional->cursor;

-		    pWin->optional->cursor = pCursor;

-		    pCursor->refcnt++;

-		    pWin->cursorIsNone = FALSE;

-		    /*

-		     * check on any children now matching the new cursor

-		     */

-

-		    for (pChild=pWin->firstChild; pChild; pChild=pChild->nextSib)

-		    {

-			if (pChild->optional &&

-			    (pChild->optional->cursor == pCursor))

-			    CheckWindowOptionalNeed (pChild);

-		    }

-		}

-

-		if (pWin->realized)

-		    WindowHasNewCursor( pWin);

-

-		/* Can't free cursor until here - old cursor

-		 * is needed in WindowHasNewCursor

-		 */

-		if (pOldCursor)

-		    FreeCursor (pOldCursor, (Cursor)0);

-	    }

-	    break;

-	 default:

-	    error = BadValue;

-	    client->errorValue = vmask;

-	    goto PatchUp;

-      }

-      vmaskCopy |= index2;

-    }

-PatchUp:

-    if (checkOptional)

-	CheckWindowOptionalNeed (pWin);

-

-	/* We SHOULD check for an error value here XXX */

-    (*pScreen->ChangeWindowAttributes)(pWin, vmaskCopy);

-

-    /* 

-	If the border contents have changed, redraw the border. 

-	Note that this has to be done AFTER pScreen->ChangeWindowAttributes

-	for the tile to be rotated, and the correct function selected.

-    */

-    if (((vmaskCopy & (CWBorderPixel | CWBorderPixmap)) || borderRelative)

-	&& pWin->viewable && HasBorder (pWin))

-    {

-	RegionRec exposed;

-

-	RegionNull(&exposed);

-	RegionSubtract(&exposed, &pWin->borderClip, &pWin->winSize);

-	miPaintWindow(pWin, &exposed, PW_BORDER);

-	RegionUninit(&exposed);

-    }

-    return error;

-}

-

-

-/*****

- * GetWindowAttributes

- *    Notice that this is different than ChangeWindowAttributes

- *****/

-

-void

-GetWindowAttributes(WindowPtr pWin, ClientPtr client, xGetWindowAttributesReply *wa)

-{

-    wa->type = X_Reply;

-    wa->bitGravity = pWin->bitGravity;

-    wa->winGravity = pWin->winGravity;

-    if (pWin->forcedBS && pWin->backingStore != Always)

-	wa->backingStore = NotUseful;

-    else

-	wa->backingStore = pWin->backingStore;

-    wa->length = bytes_to_int32(sizeof(xGetWindowAttributesReply) -

-		 sizeof(xGenericReply));

-    wa->sequenceNumber = client->sequence;

-    wa->backingBitPlanes =  wBackingBitPlanes (pWin);

-    wa->backingPixel =  wBackingPixel (pWin);

-    wa->saveUnder = (BOOL)pWin->saveUnder;

-    wa->override = pWin->overrideRedirect;

-    if (!pWin->mapped)

-	wa->mapState = IsUnmapped;

-    else if (pWin->realized)

-	wa->mapState = IsViewable;

-    else

-	wa->mapState = IsUnviewable;

-

-    wa->colormap =  wColormap (pWin);

-    wa->mapInstalled = (wa->colormap == None) ? xFalse

-				: IsMapInstalled(wa->colormap, pWin);

-

-    wa->yourEventMask = EventMaskForClient(pWin, client);

-    wa->allEventMasks = pWin->eventMask | wOtherEventMasks (pWin);

-    wa->doNotPropagateMask = wDontPropagateMask (pWin);

-    wa->class = pWin->drawable.class;

-    wa->visualID = wVisual (pWin);

-}

-

-

-WindowPtr

-MoveWindowInStack(WindowPtr pWin, WindowPtr pNextSib)

-{

-    WindowPtr pParent = pWin->parent;

-    WindowPtr pFirstChange = pWin; /* highest window where list changes */

-

-    if (pWin->nextSib != pNextSib)

-    {

-	WindowPtr pOldNextSib = pWin->nextSib;

-

-	if (!pNextSib)	      /* move to bottom */

-	{

-	    if (pParent->firstChild == pWin)

-		pParent->firstChild = pWin->nextSib;

-	    /* if (pWin->nextSib) */	 /* is always True: pNextSib == NULL

-					  * and pWin->nextSib != pNextSib

-					  * therefore pWin->nextSib != NULL */

-	    pFirstChange = pWin->nextSib;

-	    pWin->nextSib->prevSib = pWin->prevSib;

-	    if (pWin->prevSib)

-		pWin->prevSib->nextSib = pWin->nextSib;

-	    pParent->lastChild->nextSib = pWin;

-	    pWin->prevSib = pParent->lastChild;

-	    pWin->nextSib = NullWindow;

-	    pParent->lastChild = pWin;

-	}

-	else if (pParent->firstChild == pNextSib) /* move to top */

-	{

-	    pFirstChange = pWin;

-	    if (pParent->lastChild == pWin)

-	       pParent->lastChild = pWin->prevSib;

-	    if (pWin->nextSib)

-		pWin->nextSib->prevSib = pWin->prevSib;

-	    if (pWin->prevSib)

-		pWin->prevSib->nextSib = pWin->nextSib;

-	    pWin->nextSib = pParent->firstChild;

-	    pWin->prevSib = (WindowPtr ) NULL;

-	    pNextSib->prevSib = pWin;

-	    pParent->firstChild = pWin;

-	}

-	else			/* move in middle of list */

-	{

-	    WindowPtr pOldNext = pWin->nextSib;

-

-	    pFirstChange = NullWindow;

-	    if (pParent->firstChild == pWin)

-		pFirstChange = pParent->firstChild = pWin->nextSib;

-	    if (pParent->lastChild == pWin) {

-	       pFirstChange = pWin;

-	       pParent->lastChild = pWin->prevSib;

-	    }

-	    if (pWin->nextSib)

-		pWin->nextSib->prevSib = pWin->prevSib;

-	    if (pWin->prevSib)

-		pWin->prevSib->nextSib = pWin->nextSib;

-	    pWin->nextSib = pNextSib;

-	    pWin->prevSib = pNextSib->prevSib;

-	    if (pNextSib->prevSib)

-		pNextSib->prevSib->nextSib = pWin;

-	    pNextSib->prevSib = pWin;

-	    if (!pFirstChange) {		     /* do we know it yet? */

-		pFirstChange = pParent->firstChild;  /* no, search from top */

-		while ((pFirstChange != pWin) && (pFirstChange != pOldNext))

-		     pFirstChange = pFirstChange->nextSib;

-	    }

-	}

-	if(pWin->drawable.pScreen->RestackWindow)

-	    (*pWin->drawable.pScreen->RestackWindow)(pWin, pOldNextSib);

-    }

-

-#ifdef ROOTLESS

-    /*

-     * In rootless mode we can't optimize away window restacks.

-     * There may be non-X windows around, so even if the window

-     * is in the correct position from X's point of view,

-     * the underlying window system may want to reorder it.

-     */

-    else if (pWin->drawable.pScreen->RestackWindow)

-        (*pWin->drawable.pScreen->RestackWindow)(pWin, pWin->nextSib);

-#endif

-

-    return pFirstChange;

-}

-

-void

-SetWinSize (WindowPtr pWin)

-{

-#ifdef COMPOSITE

-    if (pWin->redirectDraw != RedirectDrawNone)

-    {

-	BoxRec	box;

-

-	/*

-	 * Redirected clients get clip list equal to their

-	 * own geometry, not clipped to their parent

-	 */

-	box.x1 = pWin->drawable.x;

-	box.y1 = pWin->drawable.y;

-	box.x2 = pWin->drawable.x + pWin->drawable.width;

-	box.y2 = pWin->drawable.y + pWin->drawable.height;

-	RegionReset(&pWin->winSize, &box);

-    }

-    else

-#endif

-    ClippedRegionFromBox(pWin->parent, &pWin->winSize,

-			 pWin->drawable.x, pWin->drawable.y,

-			 (int)pWin->drawable.width,

-			 (int)pWin->drawable.height);

-    if (wBoundingShape (pWin) || wClipShape (pWin)) {

-	RegionTranslate(&pWin->winSize, - pWin->drawable.x,

-			 - pWin->drawable.y);

-	if (wBoundingShape (pWin))

-	    RegionIntersect(&pWin->winSize, &pWin->winSize,

-			     wBoundingShape (pWin));

-	if (wClipShape (pWin))

-	    RegionIntersect(&pWin->winSize, &pWin->winSize,

-			     wClipShape (pWin));

-	RegionTranslate(&pWin->winSize, pWin->drawable.x,

-			 pWin->drawable.y);

-    }

-}

-

-void

-SetBorderSize (WindowPtr pWin)

-{

-    int	bw;

-

-    if (HasBorder (pWin)) {

-	bw = wBorderWidth (pWin);

-#ifdef COMPOSITE

-	if (pWin->redirectDraw != RedirectDrawNone)

-	{

-	    BoxRec	box;

-

-	    /*

-	     * Redirected clients get clip list equal to their

-	     * own geometry, not clipped to their parent

-	     */

-	    box.x1 = pWin->drawable.x - bw;

-	    box.y1 = pWin->drawable.y - bw;

-	    box.x2 = pWin->drawable.x + pWin->drawable.width + bw;

-	    box.y2 = pWin->drawable.y + pWin->drawable.height + bw;

-	    RegionReset(&pWin->borderSize, &box);

-	}

-	else

-#endif

-	ClippedRegionFromBox(pWin->parent, &pWin->borderSize,

-		pWin->drawable.x - bw, pWin->drawable.y - bw,

-		(int)(pWin->drawable.width + (bw<<1)),

-		(int)(pWin->drawable.height + (bw<<1)));

-	if (wBoundingShape (pWin)) {

-	    RegionTranslate(&pWin->borderSize, - pWin->drawable.x,

-			     - pWin->drawable.y);

-	    RegionIntersect(&pWin->borderSize, &pWin->borderSize,

-			     wBoundingShape (pWin));

-	    RegionTranslate(&pWin->borderSize, pWin->drawable.x,

-			     pWin->drawable.y);

-	    RegionUnion(&pWin->borderSize, &pWin->borderSize,

-			 &pWin->winSize);

-	}

-    } else {

-	RegionCopy(&pWin->borderSize, &pWin->winSize);

-    }

-}

-

-/**

- *

- *  \param x,y          new window position

- *  \param oldx,oldy    old window position

- *  \param destx,desty  position relative to gravity

- */

-

-void

-GravityTranslate (int x, int y, int oldx, int oldy,

-                  int dw, int dh, unsigned gravity,

-                  int *destx, int *desty)

-{

-    switch (gravity) {

-    case NorthGravity:

-	*destx = x + dw / 2;

-	*desty = y;

-	break;

-    case NorthEastGravity:

-	*destx = x + dw;

-	*desty = y;

-	break;

-    case WestGravity:

-	*destx = x;

-	*desty = y + dh / 2;

-	break;

-    case CenterGravity:

-	*destx = x + dw / 2;

-	*desty = y + dh / 2;

-	break;

-    case EastGravity:

-	*destx = x + dw;

-	*desty = y + dh / 2;

-	break;

-    case SouthWestGravity:

-	*destx = x;

-	*desty = y + dh;

-	break;

-    case SouthGravity:

-	*destx = x + dw / 2;

-	*desty = y + dh;

-	break;

-    case SouthEastGravity:

-	*destx = x + dw;

-	*desty = y + dh;

-	break;

-    case StaticGravity:

-	*destx = oldx;

-	*desty = oldy;

-	break;

-    default:

-	*destx = x;

-	*desty = y;

-	break;

-    }

-}

-

-/* XXX need to retile border on each window with ParentRelative origin */

-void

-ResizeChildrenWinSize(WindowPtr pWin, int dx, int dy, int dw, int dh)

-{

-    ScreenPtr pScreen;

-    WindowPtr pSib, pChild;

-    Bool resized = (dw || dh);

-

-    pScreen = pWin->drawable.pScreen;

-

-    for (pSib = pWin->firstChild; pSib; pSib = pSib->nextSib)

-    {

-	if (resized && (pSib->winGravity > NorthWestGravity))

-	{

-	    int cwsx, cwsy;

-

-	    cwsx = pSib->origin.x;

-	    cwsy = pSib->origin.y;

-	    GravityTranslate (cwsx, cwsy, cwsx - dx, cwsy - dy, dw, dh,

-			pSib->winGravity, &cwsx, &cwsy);

-	    if (cwsx != pSib->origin.x || cwsy != pSib->origin.y)

-	    {

-		xEvent event;

-

-		event.u.u.type = GravityNotify;

-		event.u.gravity.window = pSib->drawable.id;

-		event.u.gravity.x = cwsx - wBorderWidth (pSib);

-		event.u.gravity.y = cwsy - wBorderWidth (pSib);

-		DeliverEvents (pSib, &event, 1, NullWindow);

-		pSib->origin.x = cwsx;

-		pSib->origin.y = cwsy;

-	    }

-	}

-	pSib->drawable.x = pWin->drawable.x + pSib->origin.x;

-	pSib->drawable.y = pWin->drawable.y + pSib->origin.y;

-	SetWinSize (pSib);

-	SetBorderSize (pSib);

-	(*pScreen->PositionWindow)(pSib, pSib->drawable.x, pSib->drawable.y);

-

-	if ( (pChild = pSib->firstChild) )

-	{

-	    while (1)

-	    {

-		pChild->drawable.x = pChild->parent->drawable.x +

-				     pChild->origin.x;

-		pChild->drawable.y = pChild->parent->drawable.y +

-				     pChild->origin.y;

-		SetWinSize (pChild);

-		SetBorderSize (pChild);

-		(*pScreen->PositionWindow)(pChild,

-				    pChild->drawable.x, pChild->drawable.y);

-		if (pChild->firstChild)

-		{

-		    pChild = pChild->firstChild;

-		    continue;

-		}

-		while (!pChild->nextSib && (pChild != pSib))

-		    pChild = pChild->parent;

-		if (pChild == pSib)

-		    break;

-		pChild = pChild->nextSib;

-	    }

-	}

-    }

-}

-

-#define GET_INT16(m, f) \

-	if (m & mask) \

-	  { \

-	     f = (INT16) *pVlist;\

-	    pVlist++; \

-	 }

-#define GET_CARD16(m, f) \

-	if (m & mask) \

-	 { \

-	    f = (CARD16) *pVlist;\

-	    pVlist++;\

-	 }

-

-#define GET_CARD8(m, f) \

-	if (m & mask) \

-	 { \

-	    f = (CARD8) *pVlist;\

-	    pVlist++;\

-	 }

-

-#define ChangeMask ((Mask)(CWX | CWY | CWWidth | CWHeight))

-

-#define IllegalInputOnlyConfigureMask (CWBorderWidth)

-

-/*

- * IsSiblingAboveMe

- *     returns Above if pSib above pMe in stack or Below otherwise 

- */

-

-static int

-IsSiblingAboveMe(

-    WindowPtr pMe,

-    WindowPtr pSib)

-{

-    WindowPtr pWin;

-

-    pWin = pMe->parent->firstChild;

-    while (pWin)

-    {

-	if (pWin == pSib)

-	    return Above;

-	else if (pWin == pMe)

-	    return Below;

-	pWin = pWin->nextSib;

-    }

-    return Below;

-}

-

-static BoxPtr

-WindowExtents(

-    WindowPtr pWin,

-    BoxPtr pBox)

-{

-    pBox->x1 = pWin->drawable.x - wBorderWidth (pWin);

-    pBox->y1 = pWin->drawable.y - wBorderWidth (pWin);

-    pBox->x2 = pWin->drawable.x + (int)pWin->drawable.width

-	       + wBorderWidth (pWin);

-    pBox->y2 = pWin->drawable.y + (int)pWin->drawable.height

-	       + wBorderWidth (pWin);

-    return pBox;

-}

-

-#define IS_SHAPED(pWin)	(wBoundingShape (pWin) != (RegionPtr) NULL)

-

-static RegionPtr

-MakeBoundingRegion (

-    WindowPtr	pWin,

-    BoxPtr	pBox)

-{

-    RegionPtr	pRgn = RegionCreate(pBox, 1);

-    if (wBoundingShape (pWin)) {

-	RegionTranslate(pRgn, -pWin->origin.x, -pWin->origin.y);

-	RegionIntersect(pRgn, pRgn, wBoundingShape (pWin));

-	RegionTranslate(pRgn, pWin->origin.x, pWin->origin.y);

-    }

-    return pRgn;

-}

-

-static Bool

-ShapeOverlap (

-    WindowPtr	pWin,

-    BoxPtr	pWinBox,

-    WindowPtr	pSib,

-    BoxPtr	pSibBox)

-{

-    RegionPtr	pWinRgn, pSibRgn;

-    Bool	ret;

-

-    if (!IS_SHAPED(pWin) && !IS_SHAPED(pSib))

-	return TRUE;

-    pWinRgn = MakeBoundingRegion (pWin, pWinBox);

-    pSibRgn = MakeBoundingRegion (pSib, pSibBox);

-    RegionIntersect(pWinRgn, pWinRgn, pSibRgn);

-    ret = RegionNotEmpty(pWinRgn);

-    RegionDestroy(pWinRgn);

-    RegionDestroy(pSibRgn);

-    return ret;

-}

-

-static Bool

-AnyWindowOverlapsMe(

-    WindowPtr pWin,

-    WindowPtr pHead,

-    BoxPtr box)

-{

-    WindowPtr pSib;

-    BoxRec sboxrec;

-    BoxPtr sbox;

-

-    for (pSib = pWin->prevSib; pSib != pHead; pSib = pSib->prevSib)

-    {

-	if (pSib->mapped)

-	{

-	    sbox = WindowExtents(pSib, &sboxrec);

-	    if (BOXES_OVERLAP(sbox, box)

-	    && ShapeOverlap (pWin, box, pSib, sbox)

-	    )

-		return TRUE;

-	}

-    }

-    return FALSE;

-}

-

-static Bool

-IOverlapAnyWindow(

-    WindowPtr pWin,

-    BoxPtr box)

-{

-    WindowPtr pSib;

-    BoxRec sboxrec;

-    BoxPtr sbox;

-

-    for (pSib = pWin->nextSib; pSib; pSib = pSib->nextSib)

-    {

-	if (pSib->mapped)

-	{

-	    sbox = WindowExtents(pSib, &sboxrec);

-	    if (BOXES_OVERLAP(sbox, box)

-	    && ShapeOverlap (pWin, box, pSib, sbox)

-	    )

-		return TRUE;

-	}

-    }

-    return FALSE;

-}

-

-/*

- *   WhereDoIGoInTheStack() 

- *	  Given pWin and pSib and the relationshipe smode, return

- *	  the window that pWin should go ABOVE.

- *	  If a pSib is specified:

- *	      Above:  pWin is placed just above pSib

- *	      Below:  pWin is placed just below pSib

- *	      TopIf:  if pSib occludes pWin, then pWin is placed

- *		      at the top of the stack

- *	      BottomIf:	 if pWin occludes pSib, then pWin is 

- *			 placed at the bottom of the stack

- *	      Opposite: if pSib occludes pWin, then pWin is placed at the

- *			top of the stack, else if pWin occludes pSib, then

- *			pWin is placed at the bottom of the stack

- *

- *	  If pSib is NULL:

- *	      Above:  pWin is placed at the top of the stack

- *	      Below:  pWin is placed at the bottom of the stack

- *	      TopIf:  if any sibling occludes pWin, then pWin is placed at

- *		      the top of the stack

- *	      BottomIf: if pWin occludes any sibline, then pWin is placed at

- *			the bottom of the stack

- *	      Opposite: if any sibling occludes pWin, then pWin is placed at

- *			the top of the stack, else if pWin occludes any

- *			sibling, then pWin is placed at the bottom of the stack

- *

- */

-

-static WindowPtr

-WhereDoIGoInTheStack(

-    WindowPtr pWin,

-    WindowPtr pSib,

-    short x,

-    short y,

-    unsigned short w,

-    unsigned short h,

-    int smode)

-{

-    BoxRec box;

-    WindowPtr pHead, pFirst;

-

-    if ((pWin == pWin->parent->firstChild) &&

-	(pWin == pWin->parent->lastChild))

-	return((WindowPtr ) NULL);

-    pHead = RealChildHead(pWin->parent);

-    pFirst = pHead ? pHead->nextSib : pWin->parent->firstChild;

-    box.x1 = x;

-    box.y1 = y;

-    box.x2 = x + (int)w;

-    box.y2 = y + (int)h;

-    switch (smode)

-    {

-      case Above:

-	if (pSib)

-	   return pSib;

-	else if (pWin == pFirst)

-	    return pWin->nextSib;

-	else

-	    return pFirst;

-      case Below:

-	if (pSib)

-	    if (pSib->nextSib != pWin)

-		return pSib->nextSib;

-	    else

-		return pWin->nextSib;

-	else

-	    return NullWindow;

-      case TopIf:

-	if ((!pWin->mapped || (pSib && !pSib->mapped)))

-	    return pWin->nextSib;

-	else if (pSib)

-	{

-	    if ((IsSiblingAboveMe(pWin, pSib) == Above) &&

-		(RegionContainsRect(&pSib->borderSize, &box) != rgnOUT))

-		return pFirst;

-	    else

-		return pWin->nextSib;

-	}

-	else if (AnyWindowOverlapsMe(pWin, pHead, &box))

-	    return pFirst;

-	else

-	    return pWin->nextSib;

-      case BottomIf:

-	if ((!pWin->mapped || (pSib && !pSib->mapped)))

-	    return pWin->nextSib;

-	else if (pSib)

-	{

-	    if ((IsSiblingAboveMe(pWin, pSib) == Below) &&

-		(RegionContainsRect(&pSib->borderSize, &box) != rgnOUT))

-		return NullWindow;

-	    else

-		return pWin->nextSib;

-	}

-	else if (IOverlapAnyWindow(pWin, &box))

-	    return NullWindow;

-	else

-	    return pWin->nextSib;

-      case Opposite:

-	if ((!pWin->mapped || (pSib && !pSib->mapped)))

-	    return pWin->nextSib;

-	else if (pSib)

-	{

-	    if (RegionContainsRect(&pSib->borderSize, &box) != rgnOUT)

-	    {

-		if (IsSiblingAboveMe(pWin, pSib) == Above)

-		    return pFirst;

-		else

-		    return NullWindow;

-	    }

-	    else

-		return pWin->nextSib;

-	}

-	else if (AnyWindowOverlapsMe(pWin, pHead, &box))

-	{

-	    /* If I'm occluded, I can't possibly be the first child

-	     * if (pWin == pWin->parent->firstChild)

-	     *	  return pWin->nextSib;

-	     */

-	    return pFirst;

-	}

-	else if (IOverlapAnyWindow(pWin, &box))

-	    return NullWindow;

-	else

-	    return pWin->nextSib;

-      default:

-      {

-	/* should never happen; make something up. */

-	return pWin->nextSib;

-      }

-    }

-}

-

-static void

-ReflectStackChange(

-    WindowPtr pWin,

-    WindowPtr pSib,

-    VTKind  kind)

-{

-/* Note that pSib might be NULL */

-

-    Bool WasViewable = (Bool)pWin->viewable;

-    Bool anyMarked;

-    WindowPtr pFirstChange;

-    WindowPtr  pLayerWin;

-    ScreenPtr pScreen = pWin->drawable.pScreen;

-

-    /* if this is a root window, can't be restacked */

-    if (!pWin->parent)

-	return;

-

-    pFirstChange = MoveWindowInStack(pWin, pSib);

-

-    if (WasViewable)

-    {

-	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pFirstChange,

-						      &pLayerWin);

-	if (pLayerWin != pWin) pFirstChange = pLayerWin;

-	if (anyMarked)

-	{

-	    (*pScreen->ValidateTree)(pLayerWin->parent, pFirstChange, kind);

-	    (*pScreen->HandleExposures)(pLayerWin->parent);

-	}

-	if (anyMarked && pWin->drawable.pScreen->PostValidateTree)

-	    (*pScreen->PostValidateTree)(pLayerWin->parent, pFirstChange, kind);

-    }

-    if (pWin->realized)

-	WindowsRestructured ();

-}

-

-/*****

- * ConfigureWindow

- *****/

-

-int

-ConfigureWindow(WindowPtr pWin, Mask mask, XID *vlist, ClientPtr client)

-{

-#define RESTACK_WIN    0

-#define MOVE_WIN       1

-#define RESIZE_WIN     2

-#define REBORDER_WIN   3

-    WindowPtr pSib = NullWindow;

-    WindowPtr pParent = pWin->parent;

-    Window sibwid = 0;

-    Mask index2, tmask;

-    XID *pVlist;

-    short x,   y, beforeX, beforeY;

-    unsigned short w = pWin->drawable.width,

-		   h = pWin->drawable.height,

-		   bw = pWin->borderWidth;

-    int rc, action, smode = Above;

-    xEvent event;

-

-    if ((pWin->drawable.class == InputOnly) && (mask & IllegalInputOnlyConfigureMask))

-	return BadMatch;

-

-    if ((mask & CWSibling) && !(mask & CWStackMode))

-	return BadMatch;

-

-    pVlist = vlist;

-

-    if (pParent)

-    {

-	x = pWin->drawable.x - pParent->drawable.x - (int)bw;

-	y = pWin->drawable.y - pParent->drawable.y - (int)bw;

-    }

-    else

-    {

-	x = pWin->drawable.x;

-	y = pWin->drawable.y;

-    }

-    beforeX = x;

-    beforeY = y;

-    action = RESTACK_WIN;	

-    if ((mask & (CWX | CWY)) && (!(mask & (CWHeight | CWWidth))))

-    {

-	GET_INT16(CWX, x);

-	GET_INT16(CWY, y);

-	action = MOVE_WIN;

-    }

-	/* or should be resized */

-    else if (mask & (CWX |  CWY | CWWidth | CWHeight))

-    {

-	GET_INT16(CWX, x);

-	GET_INT16(CWY, y);

-	GET_CARD16(CWWidth, w);

-	GET_CARD16 (CWHeight, h);

-	if (!w || !h)

-	{

-	    client->errorValue = 0;

-	    return BadValue;

-	}

-	action = RESIZE_WIN;

-    }

-    tmask = mask & ~ChangeMask;

-    while (tmask)

-    {

-	index2 = (Mask)lowbit (tmask);

-	tmask &= ~index2;

-	switch (index2)

-	{

-	  case CWBorderWidth:

-	    GET_CARD16(CWBorderWidth, bw);

-	    break;

-	  case CWSibling:

-	    sibwid = (Window ) *pVlist;

-	    pVlist++;

-	    rc = dixLookupWindow(&pSib, sibwid, client, DixGetAttrAccess);

-	    if (rc != Success)

-	    {

-		client->errorValue = sibwid;

-		return rc;

-	    }

-	    if (pSib->parent != pParent)

-		return BadMatch;

-	    if (pSib == pWin)

-		return BadMatch;

-	    break;

-	  case CWStackMode:

-	    GET_CARD8(CWStackMode, smode);

-	    if ((smode != TopIf) && (smode != BottomIf) &&

-		(smode != Opposite) && (smode != Above) && (smode != Below))

-	    {

-		client->errorValue = smode;

-		return BadValue;

-	    }

-	    break;

-	  default:

-	    client->errorValue = mask;

-	    return BadValue;

-	}

-    }

-	/* root really can't be reconfigured, so just return */

-    if (!pParent)

-	return Success;

-

-	/* Figure out if the window should be moved.  Doesnt

-	   make the changes to the window if event sent */

-

-    if (mask & CWStackMode)

-	pSib = WhereDoIGoInTheStack(pWin, pSib, pParent->drawable.x + x,

-				    pParent->drawable.y + y,

-				    w + (bw << 1), h + (bw << 1), smode);

-    else

-	pSib = pWin->nextSib;

-

-

-    if ((!pWin->overrideRedirect) && 

-	(RedirectSend(pParent)

-	))

-    {

-	memset(&event, 0, sizeof(xEvent));

-	event.u.u.type = ConfigureRequest;

-	event.u.configureRequest.window = pWin->drawable.id;

-	if (mask & CWSibling)

-	   event.u.configureRequest.sibling = sibwid;

-	else

-	    event.u.configureRequest.sibling = None;

-	if (mask & CWStackMode)

-	   event.u.u.detail = smode;

-	else

-	    event.u.u.detail = Above;

-	event.u.configureRequest.x = x;

-	event.u.configureRequest.y = y;

-#ifdef PANORAMIX

-	if(!noPanoramiXExtension && (!pParent || !pParent->parent)) {

-            event.u.configureRequest.x += screenInfo.screens[0]->x;

-            event.u.configureRequest.y += screenInfo.screens[0]->y;

-	}

-#endif

-	event.u.configureRequest.width = w;

-	event.u.configureRequest.height = h;

-	event.u.configureRequest.borderWidth = bw;

-	event.u.configureRequest.valueMask = mask;

-	event.u.configureRequest.parent = pParent->drawable.id;

-	if (MaybeDeliverEventsToClient(pParent, &event, 1,

-		SubstructureRedirectMask, client) == 1)

-	    return Success;

-    }

-    if (action == RESIZE_WIN)

-    {

-	Bool size_change = (w != pWin->drawable.width)

-			|| (h != pWin->drawable.height);

-	if (size_change && ((pWin->eventMask|wOtherEventMasks(pWin)) & ResizeRedirectMask))

-	{

-	    xEvent eventT;

-	    memset(&eventT, 0, sizeof(xEvent));

-	    eventT.u.u.type = ResizeRequest;

-	    eventT.u.resizeRequest.window = pWin->drawable.id;

-	    eventT.u.resizeRequest.width = w;

-	    eventT.u.resizeRequest.height = h;

-	    if (MaybeDeliverEventsToClient(pWin, &eventT, 1,

-				       ResizeRedirectMask, client) == 1)

-	    {

-		/* if event is delivered, leave the actual size alone. */

-		w = pWin->drawable.width;

-		h = pWin->drawable.height;

-		size_change = FALSE;

-	    }

-	}

-	if (!size_change)

-	{

-	    if (mask & (CWX | CWY))

-		action = MOVE_WIN;

-	    else if (mask & (CWStackMode | CWBorderWidth))

-		action = RESTACK_WIN;

-	    else   /* really nothing to do */

-		return(Success) ;

-	}

-    }

-

-    if (action == RESIZE_WIN)

-	    /* we've already checked whether there's really a size change */

-	    goto ActuallyDoSomething;

-    if ((mask & CWX) && (x != beforeX))

-	    goto ActuallyDoSomething;

-    if ((mask & CWY) && (y != beforeY))

-	    goto ActuallyDoSomething;

-    if ((mask & CWBorderWidth) && (bw != wBorderWidth (pWin)))

-	    goto ActuallyDoSomething;

-    if (mask & CWStackMode)

-    {

-#ifndef ROOTLESS

-        /* See above for why we always reorder in rootless mode. */

-	if (pWin->nextSib != pSib)

-#endif

-	    goto ActuallyDoSomething;

-    }

-    return Success;

-

-ActuallyDoSomething:

-    if (pWin->drawable.pScreen->ConfigNotify)

-    {

-	int ret;

-	ret = (*pWin->drawable.pScreen->ConfigNotify)(pWin, x, y, w, h, bw, pSib);

-	if (ret) {

-	    client->errorValue = 0;

-	    return ret;

-	}

-    }

-

-    if (SubStrSend(pWin, pParent))

-    {

-	memset(&event, 0, sizeof(xEvent));

-	event.u.u.type = ConfigureNotify;

-	event.u.configureNotify.window = pWin->drawable.id;

-	if (pSib)

-	    event.u.configureNotify.aboveSibling = pSib->drawable.id;

-	else

-	    event.u.configureNotify.aboveSibling = None;

-	event.u.configureNotify.x = x;

-	event.u.configureNotify.y = y;

-#ifdef PANORAMIX

-	if(!noPanoramiXExtension && (!pParent || !pParent->parent)) {

-	    event.u.configureNotify.x += screenInfo.screens[0]->x;

-	    event.u.configureNotify.y += screenInfo.screens[0]->y;

-	}

-#endif

-	event.u.configureNotify.width = w;

-	event.u.configureNotify.height = h;

-	event.u.configureNotify.borderWidth = bw;

-	event.u.configureNotify.override = pWin->overrideRedirect;

-	DeliverEvents(pWin, &event, 1, NullWindow);

-    }

-    if (mask & CWBorderWidth)

-    {

-	if (action == RESTACK_WIN)

-	{

-	    action = MOVE_WIN;

-	    pWin->borderWidth = bw;

-	}

-	else if ((action == MOVE_WIN) &&

-		 (beforeX + wBorderWidth (pWin) == x + (int)bw) &&

-		 (beforeY + wBorderWidth (pWin) == y + (int)bw))

-	{

-	    action = REBORDER_WIN;

-	    (*pWin->drawable.pScreen->ChangeBorderWidth)(pWin, bw);

-	}

-	else

-	    pWin->borderWidth = bw;

-    }

-    if (action == MOVE_WIN)

-	(*pWin->drawable.pScreen->MoveWindow)(pWin, x, y, pSib,

-		   (mask & CWBorderWidth) ? VTOther : VTMove);

-    else if (action == RESIZE_WIN)

-	(*pWin->drawable.pScreen->ResizeWindow)(pWin, x, y, w, h, pSib);

-    else if (mask & CWStackMode)

-	ReflectStackChange(pWin, pSib, VTOther);

-

-    if (action != RESTACK_WIN)

-	CheckCursorConfinement(pWin);

-    return Success;

-#undef RESTACK_WIN

-#undef MOVE_WIN

-#undef RESIZE_WIN

-#undef REBORDER_WIN

-}

-

-

-/******

- *

- * CirculateWindow

- *    For RaiseLowest, raises the lowest mapped child (if any) that is

- *    obscured by another child to the top of the stack.  For LowerHighest,

- *    lowers the highest mapped child (if any) that is obscuring another

- *    child to the bottom of the stack.	 Exposure processing is performed 

- *

- ******/

-

-int

-CirculateWindow(WindowPtr pParent, int direction, ClientPtr client)

-{

-    WindowPtr pWin, pHead, pFirst;

-    xEvent event;

-    BoxRec box;

-

-    pHead = RealChildHead(pParent);

-    pFirst = pHead ? pHead->nextSib : pParent->firstChild;

-    if (direction == RaiseLowest)

-    {

-	for (pWin = pParent->lastChild;

-	     (pWin != pHead) &&

-	     !(pWin->mapped &&

-	       AnyWindowOverlapsMe(pWin, pHead, WindowExtents(pWin, &box)));

-	     pWin = pWin->prevSib) ;

-	if (pWin == pHead)

-	    return Success;

-    }

-    else

-    {

-	for (pWin = pFirst;

-	     pWin &&

-	     !(pWin->mapped &&

-	       IOverlapAnyWindow(pWin, WindowExtents(pWin, &box)));

-	     pWin = pWin->nextSib) ;

-	if (!pWin)

-	    return Success;

-    }

-

-    event.u.circulate.window = pWin->drawable.id;

-    event.u.circulate.parent = pParent->drawable.id;

-    event.u.circulate.event = pParent->drawable.id;

-    if (direction == RaiseLowest)

-	event.u.circulate.place = PlaceOnTop;

-    else

-	event.u.circulate.place = PlaceOnBottom;

-

-    if (RedirectSend(pParent))

-    {

-	event.u.u.type = CirculateRequest;

-	if (MaybeDeliverEventsToClient(pParent, &event, 1,

-		SubstructureRedirectMask, client) == 1)

-	    return Success;

-    }

-

-    event.u.u.type = CirculateNotify;

-    DeliverEvents(pWin, &event, 1, NullWindow);

-    ReflectStackChange(pWin,

-		       (direction == RaiseLowest) ? pFirst : NullWindow,

-		       VTStack);

-

-    return Success;

-}

-

-static int

-CompareWIDs(

-    WindowPtr pWin,

-    pointer   value) /* must conform to VisitWindowProcPtr */

-{

-    Window *wid = (Window *)value;

-

-    if (pWin->drawable.id == *wid)

-       return WT_STOPWALKING;

-    else

-       return WT_WALKCHILDREN;

-}

-

-/*****

- *  ReparentWindow

- *****/

-

-int

-ReparentWindow(WindowPtr pWin, WindowPtr pParent,

-               int x, int y, ClientPtr client)

-{

-    WindowPtr pPrev, pPriorParent;

-    Bool WasMapped = (Bool)(pWin->mapped);

-    xEvent event;

-    int bw = wBorderWidth (pWin);

-    ScreenPtr pScreen;

-

-    pScreen = pWin->drawable.pScreen;

-    if (TraverseTree(pWin, CompareWIDs, (pointer)&pParent->drawable.id) == WT_STOPWALKING)

-	return BadMatch;

-    if (!MakeWindowOptional(pWin))

-	return BadAlloc;

-

-    if (WasMapped)

-       UnmapWindow(pWin, FALSE);

-

-    memset(&event, 0, sizeof(xEvent));

-    event.u.u.type = ReparentNotify;

-    event.u.reparent.window = pWin->drawable.id;

-    event.u.reparent.parent = pParent->drawable.id;

-    event.u.reparent.x = x;

-    event.u.reparent.y = y;

-#ifdef PANORAMIX

-    if(!noPanoramiXExtension && !pParent->parent) {

-	event.u.reparent.x += screenInfo.screens[0]->x;

-	event.u.reparent.y += screenInfo.screens[0]->y;

-    }

-#endif

-    event.u.reparent.override = pWin->overrideRedirect;

-    DeliverEvents(pWin, &event, 1, pParent);

-

-    /* take out of sibling chain */

-

-    pPriorParent = pPrev = pWin->parent;

-    if (pPrev->firstChild == pWin)

-	pPrev->firstChild = pWin->nextSib;

-    if (pPrev->lastChild == pWin)

-	pPrev->lastChild = pWin->prevSib;

-

-    if (pWin->nextSib)

-	pWin->nextSib->prevSib = pWin->prevSib;

-    if (pWin->prevSib)

-	pWin->prevSib->nextSib = pWin->nextSib;

-

-    /* insert at begining of pParent */

-    pWin->parent = pParent;

-    pPrev = RealChildHead(pParent);

-    if (pPrev)

-    {

-	pWin->nextSib = pPrev->nextSib;

-	if (pPrev->nextSib)

-	    pPrev->nextSib->prevSib = pWin;

-	else

-	    pParent->lastChild = pWin;

-	pPrev->nextSib = pWin;

-	pWin->prevSib = pPrev;

-    }

-    else

-    {

-	pWin->nextSib = pParent->firstChild;

-	pWin->prevSib = NullWindow;

-	if (pParent->firstChild)

-	    pParent->firstChild->prevSib = pWin;

-	else

-	    pParent->lastChild = pWin;

-	pParent->firstChild = pWin;

-    }

-

-    pWin->origin.x = x + bw;

-    pWin->origin.y = y + bw;

-    pWin->drawable.x = x + bw + pParent->drawable.x;

-    pWin->drawable.y = y + bw + pParent->drawable.y;

-

-    /* clip to parent */

-    SetWinSize (pWin);

-    SetBorderSize (pWin);

-

-    if (pScreen->ReparentWindow)

-	(*pScreen->ReparentWindow)(pWin, pPriorParent);

-    (*pScreen->PositionWindow)(pWin, pWin->drawable.x, pWin->drawable.y);

-    ResizeChildrenWinSize(pWin, 0, 0, 0, 0);

-

-    CheckWindowOptionalNeed(pWin);

-

-    if (WasMapped)

-	MapWindow(pWin, client);

-    RecalculateDeliverableEvents(pWin);

-    return Success;

-}

-

-static void

-RealizeTree(WindowPtr pWin)

-{

-    WindowPtr pChild;

-    RealizeWindowProcPtr Realize;

-

-    Realize = pWin->drawable.pScreen->RealizeWindow;

-    pChild = pWin;

-    while (1)

-    {

-	if (pChild->mapped)

-	{

-	    pChild->realized = TRUE;

-	    pChild->viewable = (pChild->drawable.class == InputOutput);

-	    (* Realize)(pChild);

-	    if (pChild->firstChild)

-	    {

-		pChild = pChild->firstChild;

-		continue;

-	    }

-	}

-	while (!pChild->nextSib && (pChild != pWin))

-	    pChild = pChild->parent;

-	if (pChild == pWin)

-	    return;

-	pChild = pChild->nextSib;

-    }

-}

-

-static WindowPtr windowDisableMapUnmapEvents;

-

-void

-DisableMapUnmapEvents(WindowPtr pWin)

-{

-    assert (windowDisableMapUnmapEvents == NULL);

-    

-    windowDisableMapUnmapEvents = pWin;

-}

-

-void

-EnableMapUnmapEvents(WindowPtr pWin)

-{

-    assert (windowDisableMapUnmapEvents != NULL);

-

-    windowDisableMapUnmapEvents = NULL;

-}

-

-static Bool

-MapUnmapEventsEnabled(WindowPtr pWin)

-{

-    return pWin != windowDisableMapUnmapEvents;

-}

-

-/*****

- * MapWindow

- *    If some other client has selected SubStructureReDirect on the parent

- *    and override-redirect is xFalse, then a MapRequest event is generated,

- *    but the window remains unmapped.	Otherwise, the window is mapped and a

- *    MapNotify event is generated.

- *****/

-

-int

-MapWindow(WindowPtr pWin, ClientPtr client)

-{

-    ScreenPtr pScreen;

-

-    WindowPtr pParent;

-    WindowPtr  pLayerWin;

-

-    if (pWin->mapped)

-	return Success;

-

-    /*  general check for permission to map window */

-    if (XaceHook(XACE_RESOURCE_ACCESS, client, pWin->drawable.id, RT_WINDOW,

-		 pWin, RT_NONE, NULL, DixShowAccess) != Success)

-	return Success;

-

-    pScreen = pWin->drawable.pScreen;

-    if ( (pParent = pWin->parent) )

-    {

-	xEvent event;

-	Bool anyMarked;

-

-	if ((!pWin->overrideRedirect) && 

-	    (RedirectSend(pParent)

-	))

-	{

-	    memset(&event, 0, sizeof(xEvent));

-	    event.u.u.type = MapRequest;

-	    event.u.mapRequest.window = pWin->drawable.id;

-	    event.u.mapRequest.parent = pParent->drawable.id;

-

-	    if (MaybeDeliverEventsToClient(pParent, &event, 1,

-		SubstructureRedirectMask, client) == 1)

-		return Success;

-	}

-

-	pWin->mapped = TRUE;

-	if (SubStrSend(pWin, pParent) && MapUnmapEventsEnabled(pWin))

-	{

-	    memset(&event, 0, sizeof(xEvent));

-	    event.u.u.type = MapNotify;

-	    event.u.mapNotify.window = pWin->drawable.id;

-	    event.u.mapNotify.override = pWin->overrideRedirect;

-	    DeliverEvents(pWin, &event, 1, NullWindow);

-	}

-

-	if (!pParent->realized)

-	    return Success;

-	RealizeTree(pWin);

-	if (pWin->viewable)

-	{

-	    anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,

-							  &pLayerWin);

-	    if (anyMarked)

-	    {

-		(*pScreen->ValidateTree)(pLayerWin->parent, pLayerWin, VTMap);

-		(*pScreen->HandleExposures)(pLayerWin->parent);

-	    }

-	if (anyMarked && pScreen->PostValidateTree)

-	    (*pScreen->PostValidateTree)(pLayerWin->parent, pLayerWin, VTMap);

-	}

-	WindowsRestructured ();

-    }

-    else

-    {

-	RegionRec   temp;

-

-	pWin->mapped = TRUE;

-	pWin->realized = TRUE;	   /* for roots */

-	pWin->viewable = pWin->drawable.class == InputOutput;

-	/* We SHOULD check for an error value here XXX */

-	(*pScreen->RealizeWindow)(pWin);

-	if (pScreen->ClipNotify)

-	    (*pScreen->ClipNotify) (pWin, 0, 0);

-	if (pScreen->PostValidateTree)

-	    (*pScreen->PostValidateTree)(NullWindow, pWin, VTMap);

-	RegionNull(&temp);

-	RegionCopy(&temp, &pWin->clipList);

-	(*pScreen->WindowExposures) (pWin, &temp, NullRegion);

-	RegionUninit(&temp);

-    }

-

-    return Success;

-}

-

-

-/*****

- * MapSubwindows

- *    Performs a MapWindow all unmapped children of the window, in top

- *    to bottom stacking order.

- *****/

-

-void

-MapSubwindows(WindowPtr pParent, ClientPtr client)

-{

-    WindowPtr	pWin;

-    WindowPtr	pFirstMapped = NullWindow;

-    ScreenPtr	pScreen;

-    Mask	parentRedirect;

-    Mask	parentNotify;

-    xEvent	event;

-    Bool	anyMarked;

-    WindowPtr		pLayerWin;

-

-    pScreen = pParent->drawable.pScreen;

-    parentRedirect = RedirectSend(pParent);

-    parentNotify = SubSend(pParent);

-    anyMarked = FALSE;

-    for (pWin = pParent->firstChild; pWin; pWin = pWin->nextSib)

-    {

-	if (!pWin->mapped)

-	{

-	    if (parentRedirect && !pWin->overrideRedirect)

-	    {

-		memset(&event, 0, sizeof(xEvent));

-		event.u.u.type = MapRequest;

-		event.u.mapRequest.window = pWin->drawable.id;

-		event.u.mapRequest.parent = pParent->drawable.id;

-    

-		if (MaybeDeliverEventsToClient(pParent, &event, 1,

-		    SubstructureRedirectMask, client) == 1)

-		    continue;

-	    }

-    

-	    pWin->mapped = TRUE;

-	    if (parentNotify || StrSend(pWin))

-	    {

-		memset(&event, 0, sizeof(xEvent));

-		event.u.u.type = MapNotify;

-		event.u.mapNotify.window = pWin->drawable.id;

-		event.u.mapNotify.override = pWin->overrideRedirect;

-		DeliverEvents(pWin, &event, 1, NullWindow);

-	    }

-    

-	    if (!pFirstMapped)

-		pFirstMapped = pWin;

-	    if (pParent->realized)

-	    {

-		RealizeTree(pWin);

-		if (pWin->viewable)

-		{

-		    anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pWin,

-							(WindowPtr *)NULL);

-		}

-	    }

-	}

-    }

-

-    if (pFirstMapped)

-    {

-	pLayerWin = (*pScreen->GetLayerWindow)(pParent);

-	if (pLayerWin->parent != pParent) {

-	    anyMarked |= (*pScreen->MarkOverlappedWindows)(pLayerWin,

-							   pLayerWin,

-							   (WindowPtr *)NULL);

-	    pFirstMapped = pLayerWin;

-	}

-        if (anyMarked)

-        {

-	    (*pScreen->ValidateTree)(pLayerWin->parent, pFirstMapped, VTMap);

-	    (*pScreen->HandleExposures)(pLayerWin->parent);

-	}

-        if (anyMarked && pScreen->PostValidateTree)

-	    (*pScreen->PostValidateTree)(pLayerWin->parent, pFirstMapped,

-					 VTMap);

-        WindowsRestructured ();

-    }

-}

-

-static void

-UnrealizeTree(

-    WindowPtr pWin,

-    Bool fromConfigure)

-{

-    WindowPtr pChild;

-    UnrealizeWindowProcPtr Unrealize;

-    MarkUnrealizedWindowProcPtr MarkUnrealizedWindow;

-

-    Unrealize = pWin->drawable.pScreen->UnrealizeWindow;

-    MarkUnrealizedWindow = pWin->drawable.pScreen->MarkUnrealizedWindow;

-    pChild = pWin;

-    while (1)

-    {

-	if (pChild->realized)

-	{

-	    pChild->realized = FALSE;

-	    pChild->visibility = VisibilityNotViewable;

-#ifdef PANORAMIX

-	    if(!noPanoramiXExtension && !pChild->drawable.pScreen->myNum) {

-		PanoramiXRes *win;

-		int rc = dixLookupResourceByType((pointer *)&win,

-					     pChild->drawable.id, XRT_WINDOW,

-					     serverClient, DixWriteAccess);

-		if (rc == Success)

-		   win->u.win.visibility = VisibilityNotViewable;

-	    } 

-#endif

-	    (* Unrealize)(pChild);

-	    if (MapUnmapEventsEnabled(pWin))

-		DeleteWindowFromAnyEvents(pChild, FALSE);

-	    if (pChild->viewable)

-	    {

-		pChild->viewable = FALSE;

-		(* MarkUnrealizedWindow)(pChild, pWin, fromConfigure);

-		pChild->drawable.serialNumber = NEXT_SERIAL_NUMBER;

-	    }

-	    if (pChild->firstChild)

-	    {

-		pChild = pChild->firstChild;

-		continue;

-	    }

-	}

-	while (!pChild->nextSib && (pChild != pWin))

-	    pChild = pChild->parent;

-	if (pChild == pWin)

-	    return;

-	pChild = pChild->nextSib;

-    }

-}

-

-/*****

- * UnmapWindow

- *    If the window is already unmapped, this request has no effect.

- *    Otherwise, the window is unmapped and an UnMapNotify event is

- *    generated.  Cannot unmap a root window.

- *****/

-

-int

-UnmapWindow(WindowPtr pWin, Bool fromConfigure)

-{

-    WindowPtr pParent;

-    xEvent event;

-    Bool wasRealized = (Bool)pWin->realized;

-    Bool wasViewable = (Bool)pWin->viewable;

-    ScreenPtr pScreen = pWin->drawable.pScreen;

-    WindowPtr pLayerWin = pWin;

-

-    if ((!pWin->mapped) || (!(pParent = pWin->parent)))

-	return Success;

-    if (SubStrSend(pWin, pParent) && MapUnmapEventsEnabled(pWin))

-    {

-	memset(&event, 0, sizeof(xEvent));

-	event.u.u.type = UnmapNotify;

-	event.u.unmapNotify.window = pWin->drawable.id;

-	event.u.unmapNotify.fromConfigure = fromConfigure;

-	DeliverEvents(pWin, &event, 1, NullWindow);

-    }

-    if (wasViewable && !fromConfigure)

-    {

-	pWin->valdata = UnmapValData;

-	(*pScreen->MarkOverlappedWindows)(pWin, pWin->nextSib, &pLayerWin);

-	(*pScreen->MarkWindow)(pLayerWin->parent);

-    }

-    pWin->mapped = FALSE;

-    if (wasRealized)

-	UnrealizeTree(pWin, fromConfigure);

-    if (wasViewable)

-    {

-	if (!fromConfigure)

-	{

-	    (*pScreen->ValidateTree)(pLayerWin->parent, pWin, VTUnmap);

-	    (*pScreen->HandleExposures)(pLayerWin->parent);

-	}

-	if (!fromConfigure && pScreen->PostValidateTree)

-	    (*pScreen->PostValidateTree)(pLayerWin->parent, pWin, VTUnmap);

-    }

-    if (wasRealized && !fromConfigure)

-	WindowsRestructured ();

-    return Success;

-}

-

-/*****

- * UnmapSubwindows

- *    Performs an UnmapWindow request with the specified mode on all mapped

- *    children of the window, in bottom to top stacking order.

- *****/

-

-void

-UnmapSubwindows(WindowPtr pWin)

-{

-    WindowPtr pChild, pHead;

-    xEvent event;

-    Bool wasRealized = (Bool)pWin->realized;

-    Bool wasViewable = (Bool)pWin->viewable;

-    Bool anyMarked = FALSE;

-    Mask parentNotify;

-    WindowPtr pLayerWin = NULL;

-    ScreenPtr pScreen = pWin->drawable.pScreen;

-

-    if (!pWin->firstChild)

-	return;

-    parentNotify = SubSend(pWin);

-    pHead = RealChildHead(pWin);

-

-    if (wasViewable)

-	pLayerWin = (*pScreen->GetLayerWindow)(pWin);

-

-    for (pChild = pWin->lastChild; pChild != pHead; pChild = pChild->prevSib)

-    {

-	if (pChild->mapped)

-	{

-	    if (parentNotify || StrSend(pChild))

-	    {

-		event.u.u.type = UnmapNotify;

-		event.u.unmapNotify.window = pChild->drawable.id;

-		event.u.unmapNotify.fromConfigure = xFalse;

-		DeliverEvents(pChild, &event, 1, NullWindow);

-	    }

-	    if (pChild->viewable)

-	    {

-		pChild->valdata = UnmapValData;

-		anyMarked = TRUE;

-	    }

-	    pChild->mapped = FALSE;

-	    if (pChild->realized)

-		UnrealizeTree(pChild, FALSE);

-	    if (wasViewable)

-	    {

-	    }

-	}

-    }

-    if (wasViewable)

-    {

-	if (anyMarked)

-	{

-	    if (pLayerWin->parent == pWin)

-		(*pScreen->MarkWindow)(pWin);

-	    else

-	    {

-		WindowPtr ptmp;

-                (*pScreen->MarkOverlappedWindows)(pWin, pLayerWin,

-						  (WindowPtr *)NULL);

-		(*pScreen->MarkWindow)(pLayerWin->parent);

-		

-		/* Windows between pWin and pLayerWin may not have been marked */

-		ptmp = pWin;

- 

-		while (ptmp != pLayerWin->parent)

-		{

-		    (*pScreen->MarkWindow)(ptmp);

-		    ptmp = ptmp->parent;

-		}

-                pHead = pWin->firstChild;

-	    }

-	    (*pScreen->ValidateTree)(pLayerWin->parent, pHead, VTUnmap);

-	    (*pScreen->HandleExposures)(pLayerWin->parent);

-	}

-	if (anyMarked && pScreen->PostValidateTree)

-	    (*pScreen->PostValidateTree)(pLayerWin->parent, pHead, VTUnmap);

-    }

-    if (wasRealized)

-	WindowsRestructured ();

-}

-

-

-void

-HandleSaveSet(ClientPtr client)

-{

-    WindowPtr pParent, pWin;

-    int j;

-

-    for (j=0; j<client->numSaved; j++)

-    {

-	pWin = SaveSetWindow(client->saveSet[j]);

-#ifdef XFIXES

-	if (SaveSetToRoot(client->saveSet[j]))

-	    pParent = pWin->drawable.pScreen->root;

-	else

-#endif

-	{

-	    pParent = pWin->parent;

-	    while (pParent && (wClient (pParent) == client))

-		pParent = pParent->parent;

-	}

-	if (pParent)

-	{

-	    if (pParent != pWin->parent)

-	    {

-#ifdef XFIXES

-		/* unmap first so that ReparentWindow doesn't remap */

-		if (!SaveSetShouldMap (client->saveSet[j]))

-		    UnmapWindow(pWin, FALSE);

-#endif

-		ReparentWindow(pWin, pParent,

-			       pWin->drawable.x - wBorderWidth (pWin) - pParent->drawable.x,

-			       pWin->drawable.y - wBorderWidth (pWin) - pParent->drawable.y,

-			       client);

-		if(!pWin->realized && pWin->mapped)

-		    pWin->mapped = FALSE;

-	    }

-#ifdef XFIXES

-	    if (SaveSetShouldMap (client->saveSet[j]))

-#endif

-		MapWindow(pWin, client);

-	}

-    }

-    free(client->saveSet);

-    client->numSaved = 0;

-    client->saveSet = (SaveSetElt *)NULL;

-}

-

-/**

- *

- * \param x,y  in root

- */

-Bool

-PointInWindowIsVisible(WindowPtr pWin, int x, int y)

-{

-    BoxRec box;

-

-    if (!pWin->realized)

-	return FALSE;

-    if (RegionContainsPoint(&pWin->borderClip,

-						  x, y, &box)

-	&& (!wInputShape(pWin) ||

-	    RegionContainsPoint(wInputShape(pWin),

-				x - pWin->drawable.x,

-				y - pWin->drawable.y, &box)))

-	return TRUE;

-    return FALSE;

-}

-

-

-RegionPtr

-NotClippedByChildren(WindowPtr pWin)

-{

-    RegionPtr pReg = RegionCreate(NullBox, 1);

-    if (pWin->parent ||

-	screenIsSaved != SCREEN_SAVER_ON ||

-	!HasSaverWindow (pWin->drawable.pScreen))

-    {

-	RegionIntersect(pReg, &pWin->borderClip, &pWin->winSize);

-    }

-    return pReg;

-}

-

-void

-SendVisibilityNotify(WindowPtr pWin)

-{

-    xEvent event;

-    unsigned int visibility = pWin->visibility;

-

-    if (!MapUnmapEventsEnabled(pWin))

-        return;

-#ifdef PANORAMIX

-    /* This is not quite correct yet, but it's close */

-    if(!noPanoramiXExtension) {

-	PanoramiXRes *win;

-	WindowPtr pWin2;

-	int rc, i, Scrnum;

-

-	Scrnum = pWin->drawable.pScreen->myNum;

-	

-	win = PanoramiXFindIDByScrnum(XRT_WINDOW, pWin->drawable.id, Scrnum);

-

-	if(!win || (win->u.win.visibility == visibility))

-	    return;

-

-	switch(visibility) {

-	case VisibilityUnobscured:

-	    for(i = 0; i < PanoramiXNumScreens; i++) {

-		if(i == Scrnum) continue;

-

-		rc = dixLookupWindow(&pWin2, win->info[i].id, serverClient,

-				     DixWriteAccess);

-

-		if (rc == Success) {

-		    if(pWin2->visibility == VisibilityPartiallyObscured)

-		   	return;

-

-		    if(!i) pWin = pWin2;

-		}

-	    }

-	    break;

-	case VisibilityPartiallyObscured:

-	    if(Scrnum) {

-		rc = dixLookupWindow(&pWin2, win->info[0].id, serverClient,

-				     DixWriteAccess);

-		if (rc == Success) pWin = pWin2;

-	    }

-	    break;

-	case VisibilityFullyObscured:

-	    for(i = 0; i < PanoramiXNumScreens; i++) {

-		if(i == Scrnum) continue;

-

-		rc = dixLookupWindow(&pWin2, win->info[i].id, serverClient,

-				     DixWriteAccess);

-		

-		if (rc == Success) {

-		    if(pWin2->visibility != VisibilityFullyObscured)

-		    	return;

-

-		    if(!i) pWin = pWin2;

-		}

-	    }

-	    break;

-	}

-	

-	win->u.win.visibility = visibility;

-    }

-#endif

-

-    memset(&event, 0, sizeof(xEvent));

-    event.u.u.type = VisibilityNotify;

-    event.u.visibility.window = pWin->drawable.id;

-    event.u.visibility.state = visibility;

-    DeliverEvents(pWin, &event, 1, NullWindow);

-}

-

-#define RANDOM_WIDTH 32

-int

-dixSaveScreens(ClientPtr client, int on, int mode)

-{

-    int rc, i, what, type;

-

-    if (on == SCREEN_SAVER_FORCER)

-    {

-	if (mode == ScreenSaverReset)

-	    what = SCREEN_SAVER_OFF;

-	else

-	    what = SCREEN_SAVER_ON;

-	type = what;

-    }

-    else

-    {

-	what = on;

-	type = what;

-	if (what == screenIsSaved)

-	    type = SCREEN_SAVER_CYCLE;

-    }

-

-    for (i = 0; i < screenInfo.numScreens; i++) {

-	rc = XaceHook(XACE_SCREENSAVER_ACCESS, client, screenInfo.screens[i],

-		      DixShowAccess | DixHideAccess);

-	if (rc != Success)

-	    return rc;

-    }

-    for (i = 0; i < screenInfo.numScreens; i++)

-    {

-	ScreenPtr pScreen = screenInfo.screens[i];

-	if (on == SCREEN_SAVER_FORCER)

-	   (* pScreen->SaveScreen) (pScreen, on);

-	if (pScreen->screensaver.ExternalScreenSaver)

-	{

-	    if ((*pScreen->screensaver.ExternalScreenSaver)

-		(pScreen, type, on == SCREEN_SAVER_FORCER))

-		continue;

-	}

-	if (type == screenIsSaved)

-	    continue;

-	switch (type) {

-	case SCREEN_SAVER_OFF:

-	    if (pScreen->screensaver.blanked == SCREEN_IS_BLANKED)

-	    {

-	       (* pScreen->SaveScreen) (pScreen, what);

-	    }

-	    else if (HasSaverWindow (pScreen))

-	    {

-		pScreen->screensaver.pWindow = NullWindow;

-		FreeResource(pScreen->screensaver.wid, RT_NONE);

-	    }

-	    break;

-	case SCREEN_SAVER_CYCLE:

-	    if (pScreen->screensaver.blanked == SCREEN_IS_TILED)

-	    {

-		WindowPtr pWin = pScreen->screensaver.pWindow;

-		/* make it look like screen saver is off, so that

-		 * NotClippedByChildren will compute a clip list

-		 * for the root window, so miPaintWindow works

-		 */

-		screenIsSaved = SCREEN_SAVER_OFF;

-		(*pWin->drawable.pScreen->MoveWindow)(pWin,

-			   (short)(-(rand() % RANDOM_WIDTH)),

-			   (short)(-(rand() % RANDOM_WIDTH)),

-			   pWin->nextSib, VTMove);

-		screenIsSaved = SCREEN_SAVER_ON;

-	    }

-	    /*

-	     * Call the DDX saver in case it wants to do something

-	     * at cycle time

-	     */

-	    else if (pScreen->screensaver.blanked == SCREEN_IS_BLANKED)

-	    {

-		(* pScreen->SaveScreen) (pScreen, type);

-	    }

-	    break;

-	case SCREEN_SAVER_ON:

-	    if (ScreenSaverBlanking != DontPreferBlanking)

-	    {

-		if ((* pScreen->SaveScreen) (pScreen, what))

-		{

-		   pScreen->screensaver.blanked = SCREEN_IS_BLANKED;

-		   continue;

-		}

-		if ((ScreenSaverAllowExposures != DontAllowExposures) &&

-		    TileScreenSaver(pScreen, SCREEN_IS_BLACK))

-		{

-		    pScreen->screensaver.blanked = SCREEN_IS_BLACK;

-		    continue;

-		}

-	    }

-	    if ((ScreenSaverAllowExposures != DontAllowExposures) &&

-		TileScreenSaver(pScreen, SCREEN_IS_TILED))

-	    {

-		pScreen->screensaver.blanked = SCREEN_IS_TILED;

-	    }

-	    else

-		pScreen->screensaver.blanked = SCREEN_ISNT_SAVED;

-	    break;

-	}

-    }

-    screenIsSaved = what;

-    if (mode == ScreenSaverReset) {

-	if (on == SCREEN_SAVER_FORCER) {

-	    UpdateCurrentTimeIf();

-	    lastDeviceEventTime = currentTime;

-	}

-	SetScreenSaverTimer();

-    }

-    return Success;

-}

-

-int

-SaveScreens(int on, int mode)

-{

-    return dixSaveScreens(serverClient, on, mode);

-}

-

-static Bool

-TileScreenSaver(ScreenPtr pScreen, int kind)

-{

-    int j;

-    int result;

-    XID attributes[3];

-    Mask mask;

-    WindowPtr pWin;		

-    CursorMetricRec cm;

-    unsigned char *srcbits, *mskbits;

-    CursorPtr cursor;

-    XID	cursorID = 0;

-    int	attri;

-

-    mask = 0;

-    attri = 0;

-    switch (kind) {

-    case SCREEN_IS_TILED:

-	switch (pScreen->root->backgroundState) {

-	case BackgroundPixel:

-	    attributes[attri++] = pScreen->root->background.pixel;

-	    mask |= CWBackPixel;

-	    break;

-	case BackgroundPixmap:

-	    attributes[attri++] = None;

-	    mask |= CWBackPixmap;

-	    break;

-	default:

-	    break;

-	}

-	break;

-    case SCREEN_IS_BLACK:

-	attributes[attri++] = pScreen->root->drawable.pScreen->blackPixel;

-	mask |= CWBackPixel;

-	break;

-    }

-    mask |= CWOverrideRedirect;

-    attributes[attri++] = xTrue;

-

-    /*

-     * create a blank cursor

-     */

-

-    cm.width=16;

-    cm.height=16;

-    cm.xhot=8;

-    cm.yhot=8;

-    srcbits = malloc( BitmapBytePad(32)*16);

-    mskbits = malloc( BitmapBytePad(32)*16);

-    if (!srcbits || !mskbits)

-    {

-	free(srcbits);

-	free(mskbits);

-	cursor = 0;

-    }

-    else

-    {

-	for (j=0; j<BitmapBytePad(32)*16; j++)

-	    srcbits[j] = mskbits[j] = 0x0;

-	result = AllocARGBCursor(srcbits, mskbits, NULL, &cm, 0, 0, 0, 0, 0, 0,

-				 &cursor, serverClient, (XID)0);

-	if (cursor)

-	{

-	    cursorID = FakeClientID(0);

-	    if (AddResource (cursorID, RT_CURSOR, (pointer) cursor))

-	    {

-		attributes[attri] = cursorID;

-		mask |= CWCursor;

-	    }

-	    else

-		cursor = 0;

-	}

-	else

-	{

-	    free(srcbits);

-	    free(mskbits);

-	}

-    }

-

-    pWin = pScreen->screensaver.pWindow =

-	 CreateWindow(pScreen->screensaver.wid,

-	      pScreen->root,

-	      -RANDOM_WIDTH, -RANDOM_WIDTH,

-	      (unsigned short)pScreen->width + RANDOM_WIDTH,

-	      (unsigned short)pScreen->height + RANDOM_WIDTH,

-	      0, InputOutput, mask, attributes, 0, serverClient,

-	      wVisual (pScreen->root), &result);

-

-    if (cursor)

-	FreeResource (cursorID, RT_NONE);

-

-    if (!pWin)

-	return FALSE;

-

-    if (!AddResource(pWin->drawable.id, RT_WINDOW,

-		     (pointer)pScreen->screensaver.pWindow))

-	return FALSE;

-

-    if (mask & CWBackPixmap)

-    {

-	MakeRootTile (pWin);

-	(*pWin->drawable.pScreen->ChangeWindowAttributes)(pWin, CWBackPixmap);

-    }

-    MapWindow(pWin, serverClient);

-    return TRUE;

-}

-

-/*

- * FindWindowWithOptional

- *

- * search ancestors of the given window for an entry containing

- * a WindowOpt structure.  Assumptions:	 some parent will

- * contain the structure.

- */

-

-WindowPtr

-FindWindowWithOptional (WindowPtr w)

-{

-    do

-	w = w->parent;

-    while (!w->optional);

-    return w;

-}

-

-/*

- * CheckWindowOptionalNeed

- *

- * check each optional entry in the given window to see if

- * the value is satisfied by the default rules.	 If so,

- * release the optional record

- */

-

-void

-CheckWindowOptionalNeed (WindowPtr w)

-{

-    WindowOptPtr optional;

-    WindowOptPtr parentOptional;

-

-    if (!w->parent || !w->optional)

-	return;

-    optional = w->optional;

-    if (optional->dontPropagateMask != DontPropagateMasks[w->dontPropagate])

-	return;

-    if (optional->otherEventMasks != 0)

-	return;

-    if (optional->otherClients != NULL)

-	return;

-    if (optional->passiveGrabs != NULL)

-	return;

-    if (optional->userProps != NULL)

-	return;

-    if (optional->backingBitPlanes != ~0L)

-	return;

-    if (optional->backingPixel != 0)

-	return;

-    if (optional->boundingShape != NULL)

-	return;

-    if (optional->clipShape != NULL)

-	return;

-    if (optional->inputShape != NULL)

-	return;

-    if (optional->inputMasks != NULL)

-	return;

-    if (optional->deviceCursors != NULL)

-    {

-        DevCursNodePtr pNode = optional->deviceCursors;

-        while(pNode)

-        {

-            if (pNode->cursor != None)

-                return;

-            pNode = pNode->next;

-        }

-    }

-

-    parentOptional = FindWindowWithOptional(w)->optional;

-    if (optional->visual != parentOptional->visual)

-	return;

-    if (optional->cursor != None &&

-	(optional->cursor != parentOptional->cursor ||

-	 w->parent->cursorIsNone))

-	return;

-    if (optional->colormap != parentOptional->colormap)

-	return;

-    DisposeWindowOptional (w);

-}

-

-/*

- * MakeWindowOptional

- *

- * create an optional record and initialize it with the default

- * values.

- */

-

-Bool

-MakeWindowOptional (WindowPtr pWin)

-{

-    WindowOptPtr optional;

-    WindowOptPtr parentOptional;

-

-    if (pWin->optional)

-	return TRUE;

-    optional = malloc(sizeof (WindowOptRec));

-    if (!optional)

-	return FALSE;

-    optional->dontPropagateMask = DontPropagateMasks[pWin->dontPropagate];

-    optional->otherEventMasks = 0;

-    optional->otherClients = NULL;

-    optional->passiveGrabs = NULL;

-    optional->userProps = NULL;

-    optional->backingBitPlanes = ~0L;

-    optional->backingPixel = 0;

-    optional->boundingShape = NULL;

-    optional->clipShape = NULL;

-    optional->inputShape = NULL;

-    optional->inputMasks = NULL;

-    optional->deviceCursors = NULL;

-

-    parentOptional = FindWindowWithOptional(pWin)->optional;

-    optional->visual = parentOptional->visual;

-    if (!pWin->cursorIsNone)

-    {

-	optional->cursor = parentOptional->cursor;

-	optional->cursor->refcnt++;

-    }

-    else

-    {

-	optional->cursor = None;

-    }

-    optional->colormap = parentOptional->colormap;

-    pWin->optional = optional;

-    return TRUE;

-}

-

-/*

- * Changes the cursor struct for the given device and the given window.

- * A cursor that does not have a device cursor set will use whatever the

- * standard cursor is for the window. If all devices have a cursor set,

- * changing the window cursor (e.g. using XDefineCursor()) will not have any

- * visible effect. Only when one of the device cursors is set to None again,

- * this device's cursor will display the changed standard cursor.

- * 

- * CursorIsNone of the window struct is NOT modified if you set a device

- * cursor. 

- *

- * Assumption: If there is a node for a device in the list, the device has a

- * cursor. If the cursor is set to None, it is inherited by the parent.

- */

-int

-ChangeWindowDeviceCursor(WindowPtr pWin, 

-                         DeviceIntPtr pDev, 

-                         CursorPtr pCursor) 

-{

-    DevCursNodePtr pNode, pPrev;

-    CursorPtr pOldCursor = NULL;

-    ScreenPtr pScreen;

-    WindowPtr pChild;

-

-    if (!pWin->optional && !MakeWindowOptional(pWin))

-        return BadAlloc;

-

-    /* 1) Check if window has device cursor set

-     *  Yes: 1.1) swap cursor with given cursor if parent does not have same

-     *            cursor, free old cursor

-     *       1.2) free old cursor, use parent cursor

-     *  No: 1.1) add node to beginning of list.

-     *      1.2) add cursor to node if parent does not have same cursor

-     *      1.3) use parent cursor if parent does not have same cursor

-     *  2) Patch up children if child has a devcursor

-     *  2.1) if child has cursor None, it inherited from parent, set to old

-     *  cursor

-     *  2.2) if child has same cursor as new cursor, remove and set to None

-     */

-

-    pScreen = pWin->drawable.pScreen;

-

-    if (WindowSeekDeviceCursor(pWin, pDev, &pNode, &pPrev))

-    {

-        /* has device cursor */

-

-        if (pNode->cursor == pCursor)

-            return Success;

-

-        pOldCursor = pNode->cursor;

-

-        if (!pCursor) /* remove from list */

-        {

-                if(pPrev)

-                    pPrev->next = pNode->next;

-                else

-                    /* first item in list */

-                    pWin->optional->deviceCursors = pNode->next;

-

-            free(pNode);

-            goto out;

-        }

-

-    } else

-    {

-        /* no device cursor yet */

-        DevCursNodePtr pNewNode;

-

-        if (!pCursor)

-            return Success;

-

-        pNewNode = malloc(sizeof(DevCursNodeRec));

-        pNewNode->dev = pDev;

-        pNewNode->next = pWin->optional->deviceCursors;

-        pWin->optional->deviceCursors = pNewNode;

-        pNode = pNewNode;

-

-    }

-

-    if (pCursor && WindowParentHasDeviceCursor(pWin, pDev, pCursor))

-        pNode->cursor = None;

-    else

-    {

-        pNode->cursor = pCursor;

-        pCursor->refcnt++;

-    }

-

-    pNode = pPrev = NULL;

-    /* fix up children */

-    for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)

-    {

-        if (WindowSeekDeviceCursor(pChild, pDev, &pNode, &pPrev))

-        {

-            if (pNode->cursor == None) /* inherited from parent */

-            {

-                pNode->cursor = pOldCursor;

-                pOldCursor->refcnt++;

-            } else if (pNode->cursor == pCursor)

-            {

-                pNode->cursor = None;

-                FreeCursor(pCursor, (Cursor)0); /* fix up refcnt */

-            }

-        }

-    }

-

-out:

-    if (pWin->realized)

-        WindowHasNewCursor(pWin);

-

-    if (pOldCursor)

-        FreeCursor(pOldCursor, (Cursor)0);

-

-    /* FIXME: We SHOULD check for an error value here XXX  

-       (comment taken from ChangeWindowAttributes) */

-    (*pScreen->ChangeWindowAttributes)(pWin, CWCursor);

-

-    return Success;

-}

-

-/* Get device cursor for given device or None if none is set */

-CursorPtr

-WindowGetDeviceCursor(WindowPtr pWin, DeviceIntPtr pDev)

-{

-    DevCursorList pList;

-

-    if (!pWin->optional || !pWin->optional->deviceCursors)

-        return NULL;

-

-    pList = pWin->optional->deviceCursors;

-

-    while(pList)

-    {

-        if (pList->dev == pDev)

-        {

-            if (pList->cursor == None) /* inherited from parent */

-                return WindowGetDeviceCursor(pWin->parent, pDev);

-            else

-                return pList->cursor;

-        }

-        pList = pList->next;

-    }

-    return NULL;

-}

-

-/* Searches for a DevCursorNode for the given window and device. If one is

- * found, return True and set pNode and pPrev to the node and to the node

- * before the node respectively. Otherwise return False.

- * If the device is the first in list, pPrev is set to NULL.

- */

-static Bool 

-WindowSeekDeviceCursor(WindowPtr pWin, 

-                       DeviceIntPtr pDev, 

-                       DevCursNodePtr* pNode, 

-                       DevCursNodePtr* pPrev)

-{

-    DevCursorList pList;

-

-    if (!pWin->optional)

-        return FALSE;

-

-    pList = pWin->optional->deviceCursors;

-

-    if (pList && pList->dev == pDev)

-    {

-        *pNode = pList;

-        *pPrev = NULL;

-        return TRUE;

-    }

-

-    while(pList)

-    {

-        if (pList->next)

-        {

-            if (pList->next->dev == pDev)

-            {

-                *pNode = pList->next;

-                *pPrev = pList;

-                return TRUE;

-            }

-        }

-        pList = pList->next;

-    }

-    return FALSE;

-}

-

-/* Return True if a parent has the same device cursor set or False if

- * otherwise 

- */ 

-static Bool 

-WindowParentHasDeviceCursor(WindowPtr pWin, 

-                            DeviceIntPtr pDev, 

-                            CursorPtr pCursor)

-{

-    WindowPtr pParent;

-    DevCursNodePtr pParentNode, pParentPrev;

-

-    pParent = pWin->parent;

-    while(pParent)

-    {

-        if (WindowSeekDeviceCursor(pParent, pDev, 

-                    &pParentNode, &pParentPrev))

-        {

-            /* if there is a node in the list, the win has a dev cursor */

-            if (!pParentNode->cursor) /* inherited. */

-                pParent = pParent->parent;

-            else if (pParentNode->cursor == pCursor) /* inherit */

-                return TRUE;

-            else  /* different cursor */

-                return FALSE;

-        } 

-        else 

-            /* parent does not have a device cursor for our device */

-            return FALSE;

-    }

-    return FALSE;

-}

+/*
+
+Copyright (c) 2006, Red Hat, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+Copyright 1987, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
+
+			All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its 
+documentation for any purpose and without fee is hereby granted, 
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in 
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.  
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+*/
+
+/* The panoramix components contained the following notice */
+/*****************************************************************
+
+Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
+BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of Digital Equipment Corporation
+shall not be used in advertising or otherwise to promote the sale, use or other
+dealings in this Software without prior written authorization from Digital
+Equipment Corporation.
+
+******************************************************************/
+
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "misc.h"
+#include "scrnintstr.h"
+#include "os.h"
+#include "regionstr.h"
+#include "validate.h"
+#include "windowstr.h"
+#include "input.h"
+#include "inputstr.h"
+#include "resource.h"
+#include "colormapst.h"
+#include "cursorstr.h"
+#include "dixstruct.h"
+#include "gcstruct.h"
+#include "servermd.h"
+#ifdef PANORAMIX
+#include "panoramiX.h"
+#include "panoramiXsrv.h"
+#endif
+#include "dixevents.h"
+#include "globals.h"
+#include "mi.h" /* miPaintWindow */
+
+#include "privates.h"
+#include "xace.h"
+
+/******
+ * Window stuff for server 
+ *
+ *    CreateRootWindow, CreateWindow, ChangeWindowAttributes,
+ *    GetWindowAttributes, DeleteWindow, DestroySubWindows,
+ *    HandleSaveSet, ReparentWindow, MapWindow, MapSubWindows,
+ *    UnmapWindow, UnmapSubWindows, ConfigureWindow, CirculateWindow,
+ *    ChangeWindowDeviceCursor
+ ******/
+
+Bool bgNoneRoot = FALSE;
+
+static unsigned char _back_lsb[4] = {0x88, 0x22, 0x44, 0x11};
+static unsigned char _back_msb[4] = {0x11, 0x44, 0x22, 0x88};
+
+static Bool WindowParentHasDeviceCursor(WindowPtr pWin, 
+                                        DeviceIntPtr pDev, 
+                                        CursorPtr pCurs);
+static Bool 
+WindowSeekDeviceCursor(WindowPtr pWin, 
+                       DeviceIntPtr pDev, 
+                       DevCursNodePtr* pNode, 
+                       DevCursNodePtr* pPrev);
+
+int screenIsSaved = SCREEN_SAVER_OFF;
+
+static Bool TileScreenSaver(ScreenPtr pScreen, int kind);
+
+#define INPUTONLY_LEGAL_MASK (CWWinGravity | CWEventMask | \
+			      CWDontPropagate | CWOverrideRedirect | CWCursor )
+
+#define BOXES_OVERLAP(b1, b2) \
+      (!( ((b1)->x2 <= (b2)->x1)  || \
+	( ((b1)->x1 >= (b2)->x2)) || \
+	( ((b1)->y2 <= (b2)->y1)) || \
+	( ((b1)->y1 >= (b2)->y2)) ) )
+
+#define RedirectSend(pWin) \
+    ((pWin->eventMask|wOtherEventMasks(pWin)) & SubstructureRedirectMask)
+
+#define SubSend(pWin) \
+    ((pWin->eventMask|wOtherEventMasks(pWin)) & SubstructureNotifyMask)
+
+#define StrSend(pWin) \
+    ((pWin->eventMask|wOtherEventMasks(pWin)) & StructureNotifyMask)
+
+#define SubStrSend(pWin,pParent) (StrSend(pWin) || SubSend(pParent))
+
+#ifdef DEBUG
+/******
+ * PrintWindowTree
+ *    For debugging only
+ ******/
+
+static void
+PrintChildren(WindowPtr p1, int indent)
+{
+    WindowPtr p2;
+    int i;
+
+    while (p1)
+    {
+	p2 = p1->firstChild;
+        ErrorF("[dix] ");
+	for (i=0; i<indent; i++) ErrorF(" ");
+	ErrorF("%lx\n", p1->drawable.id);
+	RegionPrint(&p1->clipList);
+	PrintChildren(p2, indent+4);
+	p1 = p1->nextSib;
+    }
+}
+
+static void
+PrintWindowTree(void)
+{
+    int i;
+    WindowPtr pWin, p1;
+
+    for (i=0; i<screenInfo.numScreens; i++)
+    {
+	ErrorF("[dix] WINDOW %d\n", i);
+	pWin = screenInfo.screens[i]->root;
+	RegionPrint(&pWin->clipList);
+	p1 = pWin->firstChild;
+	PrintChildren(p1, 4);
+    }
+}
+#endif
+
+int
+TraverseTree(WindowPtr pWin, VisitWindowProcPtr func, pointer data)
+{
+    int result;
+    WindowPtr pChild;
+
+    if (!(pChild = pWin))
+       return WT_NOMATCH;
+    while (1)
+    {
+	result = (* func)(pChild, data);
+	if (result == WT_STOPWALKING)
+	    return WT_STOPWALKING;
+	if ((result == WT_WALKCHILDREN) && pChild->firstChild)
+	{
+	    pChild = pChild->firstChild;
+	    continue;
+	}
+	while (!pChild->nextSib && (pChild != pWin))
+	    pChild = pChild->parent;
+	if (pChild == pWin)
+	    break;
+	pChild = pChild->nextSib;
+    }
+    return WT_NOMATCH;
+}
+
+/*****
+ * WalkTree
+ *   Walk the window tree, for SCREEN, preforming FUNC(pWin, data) on
+ *   each window.  If FUNC returns WT_WALKCHILDREN, traverse the children,
+ *   if it returns WT_DONTWALKCHILDREN, dont.  If it returns WT_STOPWALKING
+ *   exit WalkTree.  Does depth-first traverse.
+ *****/
+
+int
+WalkTree(ScreenPtr pScreen, VisitWindowProcPtr func, pointer data)
+{
+    return(TraverseTree(pScreen->root, func, data));
+}
+
+/* hack for forcing backing store on all windows */
+int	defaultBackingStore = NotUseful;
+/* hack to force no backing store */
+Bool	disableBackingStore = FALSE;
+Bool	enableBackingStore = FALSE;
+
+static void
+SetWindowToDefaults(WindowPtr pWin)
+{
+    pWin->prevSib = NullWindow;
+    pWin->firstChild = NullWindow;
+    pWin->lastChild = NullWindow;
+
+    pWin->valdata = (ValidatePtr)NULL;
+    pWin->optional = (WindowOptPtr)NULL;
+    pWin->cursorIsNone = TRUE;
+
+    pWin->backingStore = NotUseful;
+    pWin->DIXsaveUnder = FALSE;
+    pWin->backStorage = (pointer) NULL;
+
+    pWin->mapped = FALSE;	    /* off */
+    pWin->realized = FALSE;	/* off */
+    pWin->viewable = FALSE;
+    pWin->visibility = VisibilityNotViewable;
+    pWin->overrideRedirect = FALSE;
+    pWin->saveUnder = FALSE;
+
+    pWin->bitGravity = ForgetGravity;
+    pWin->winGravity = NorthWestGravity;
+
+    pWin->eventMask = 0;
+    pWin->deliverableEvents = 0;
+    pWin->dontPropagate = 0;
+    pWin->forcedBS = FALSE;
+    pWin->redirectDraw = RedirectDrawNone;
+    pWin->forcedBG = FALSE;
+
+#ifdef ROOTLESS
+    pWin->rootlessUnhittable = FALSE;
+#endif
+
+#ifdef COMPOSITE
+    pWin->damagedDescendants = FALSE;
+#endif
+}
+
+static void
+MakeRootTile(WindowPtr pWin)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    GCPtr pGC;
+    unsigned char back[128];
+    int len = BitmapBytePad(sizeof(long));
+    unsigned char *from, *to;
+    int i, j;
+
+    pWin->background.pixmap = (*pScreen->CreatePixmap)(pScreen, 4, 4,
+						    pScreen->rootDepth, 0);
+
+    pWin->backgroundState = BackgroundPixmap;
+    pGC = GetScratchGC(pScreen->rootDepth, pScreen);
+    if (!pWin->background.pixmap || !pGC)
+	FatalError("could not create root tile");
+
+    {
+	ChangeGCVal attributes[2];
+
+	attributes[0].val = pScreen->whitePixel;
+	attributes[1].val = pScreen->blackPixel;
+
+	(void)ChangeGC(NullClient, pGC, GCForeground | GCBackground, attributes);
+    }
+
+   ValidateGC((DrawablePtr)pWin->background.pixmap, pGC);
+
+   from = (screenInfo.bitmapBitOrder == LSBFirst) ? _back_lsb : _back_msb;
+   to = back;
+
+   for (i = 4; i > 0; i--, from++)
+	for (j = len; j > 0; j--)
+	    *to++ = *from;
+
+   (*pGC->ops->PutImage)((DrawablePtr)pWin->background.pixmap, pGC, 1,
+		    0, 0, len, 4, 0, XYBitmap, (char *)back);
+
+   FreeScratchGC(pGC);
+
+}
+
+/*****
+ * CreateRootWindow
+ *    Makes a window at initialization time for specified screen
+ *****/
+
+Bool
+CreateRootWindow(ScreenPtr pScreen)
+{
+    WindowPtr	pWin;
+    BoxRec	box;
+    PixmapFormatRec *format;
+
+    pWin = dixAllocateObjectWithPrivates(WindowRec, PRIVATE_WINDOW);
+    if (!pWin)
+	return FALSE;
+
+    pScreen->screensaver.pWindow = NULL;
+    pScreen->screensaver.wid = FakeClientID(0);
+    pScreen->screensaver.ExternalScreenSaver = NULL;
+    screenIsSaved = SCREEN_SAVER_OFF;
+
+    pScreen->root = pWin;
+
+    pWin->drawable.pScreen = pScreen;
+    pWin->drawable.type = DRAWABLE_WINDOW;
+
+    pWin->drawable.depth = pScreen->rootDepth;
+    for (format = screenInfo.formats;
+	 format->depth != pScreen->rootDepth;
+	 format++)
+	;
+    pWin->drawable.bitsPerPixel = format->bitsPerPixel;
+
+    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+
+    pWin->parent = NullWindow;
+    SetWindowToDefaults(pWin);
+
+    pWin->optional = malloc(sizeof (WindowOptRec));
+    if (!pWin->optional)
+        return FALSE;
+
+    pWin->optional->dontPropagateMask = 0;
+    pWin->optional->otherEventMasks = 0;
+    pWin->optional->otherClients = NULL;
+    pWin->optional->passiveGrabs = NULL;
+    pWin->optional->userProps = NULL;
+    pWin->optional->backingBitPlanes = ~0L;
+    pWin->optional->backingPixel = 0;
+    pWin->optional->boundingShape = NULL;
+    pWin->optional->clipShape = NULL;
+    pWin->optional->inputShape = NULL;
+    pWin->optional->inputMasks = NULL;
+    pWin->optional->deviceCursors = NULL;
+    pWin->optional->colormap = pScreen->defColormap;
+    pWin->optional->visual = pScreen->rootVisual;
+
+    pWin->nextSib = NullWindow;
+
+    pWin->drawable.id = FakeClientID(0);
+
+    pWin->origin.x = pWin->origin.y = 0;
+    pWin->drawable.height = pScreen->height;
+    pWin->drawable.width = pScreen->width;
+    pWin->drawable.x = pWin->drawable.y = 0;
+
+    box.x1 = 0;
+    box.y1 = 0;
+    box.x2 = pScreen->width;
+    box.y2 = pScreen->height;
+    RegionInit(&pWin->clipList, &box, 1);
+    RegionInit(&pWin->winSize, &box, 1);
+    RegionInit(&pWin->borderSize, &box, 1);
+    RegionInit(&pWin->borderClip, &box, 1);
+
+    pWin->drawable.class = InputOutput;
+    pWin->optional->visual = pScreen->rootVisual;
+
+    pWin->backgroundState = BackgroundPixel;
+    pWin->background.pixel = pScreen->whitePixel;
+
+    pWin->borderIsPixel = TRUE;
+    pWin->border.pixel = pScreen->blackPixel;
+    pWin->borderWidth = 0;
+
+    /*  security creation/labeling check
+     */
+    if (XaceHook(XACE_RESOURCE_ACCESS, serverClient, pWin->drawable.id,
+		 RT_WINDOW, pWin, RT_NONE, NULL, DixCreateAccess))
+	return FALSE;
+
+    if (!AddResource(pWin->drawable.id, RT_WINDOW, (pointer)pWin))
+	return FALSE;
+
+    if (disableBackingStore)
+	pScreen->backingStoreSupport = NotUseful;
+    if (enableBackingStore)
+	pScreen->backingStoreSupport = Always;
+
+    pScreen->saveUnderSupport = NotUseful;
+
+    return TRUE;
+}
+
+void
+InitRootWindow(WindowPtr pWin)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    int backFlag = CWBorderPixel | CWCursor | CWBackingStore;
+
+    if (!(*pScreen->CreateWindow)(pWin))
+	return; /* XXX */
+    (*pScreen->PositionWindow)(pWin, 0, 0);
+
+    pWin->cursorIsNone = FALSE;
+    pWin->optional->cursor = rootCursor;
+    rootCursor->refcnt++;
+
+
+    if (party_like_its_1989) {
+        MakeRootTile(pWin);
+        backFlag |= CWBackPixmap;
+    } else if (pScreen->canDoBGNoneRoot && bgNoneRoot) {
+        pWin->backgroundState = XaceBackgroundNoneState(pWin);
+        pWin->background.pixel = pScreen->whitePixel;
+        backFlag |= CWBackPixmap;
+    } else {
+	if (whiteRoot)
+            pWin->background.pixel = pScreen->whitePixel;
+        else
+            pWin->background.pixel = pScreen->blackPixel;
+        backFlag |= CWBackPixel;
+    } 
+
+    pWin->backingStore = defaultBackingStore;
+    pWin->forcedBS = (defaultBackingStore != NotUseful);
+    /* We SHOULD check for an error value here XXX */
+    (*pScreen->ChangeWindowAttributes)(pWin, backFlag);
+
+    MapWindow(pWin, serverClient);
+}
+
+/* Set the region to the intersection of the rectangle and the
+ * window's winSize.  The window is typically the parent of the
+ * window from which the region came.
+ */
+
+static void
+ClippedRegionFromBox(WindowPtr pWin, RegionPtr Rgn,
+                     int x, int y,
+                     int w, int h)
+{
+    BoxRec box = *RegionExtents(&pWin->winSize);
+
+    /* we do these calculations to avoid overflows */
+    if (x > box.x1)
+	box.x1 = x;
+    if (y > box.y1)
+	box.y1 = y;
+    x += w;
+    if (x < box.x2)
+	box.x2 = x;
+    y += h;
+    if (y < box.y2)
+	box.y2 = y;
+    if (box.x1 > box.x2)
+	box.x2 = box.x1;
+    if (box.y1 > box.y2)
+	box.y2 = box.y1;
+    RegionReset(Rgn, &box);
+    RegionIntersect(Rgn, Rgn, &pWin->winSize);
+}
+
+static RealChildHeadProc realChildHeadProc = NULL;
+
+void
+RegisterRealChildHeadProc (RealChildHeadProc proc)
+{
+    realChildHeadProc = proc;
+}
+
+
+WindowPtr
+RealChildHead(WindowPtr pWin)
+{
+    if (realChildHeadProc) {
+	return realChildHeadProc (pWin);
+    }
+
+    if (!pWin->parent &&
+	(screenIsSaved == SCREEN_SAVER_ON) &&
+	(HasSaverWindow (pWin->drawable.pScreen)))
+	return pWin->firstChild;
+    else
+	return NullWindow;
+}
+
+/*****
+ * CreateWindow
+ *    Makes a window in response to client request 
+ *****/
+
+WindowPtr
+CreateWindow(Window wid, WindowPtr pParent, int x, int y, unsigned w,
+             unsigned h, unsigned bw, unsigned class, Mask vmask, XID *vlist,
+             int depth, ClientPtr client, VisualID visual, int *error)
+{
+    WindowPtr pWin;
+    WindowPtr pHead;
+    ScreenPtr pScreen;
+    xEvent event;
+    int idepth, ivisual;
+    Bool fOK;
+    DepthPtr pDepth;
+    PixmapFormatRec *format;
+    WindowOptPtr ancwopt;
+
+    if (class == CopyFromParent)
+	class = pParent->drawable.class;
+
+    if ((class != InputOutput) && (class != InputOnly))
+    {
+	*error = BadValue;
+	client->errorValue = class;
+	return NullWindow;
+    }
+
+    if ((class != InputOnly) && (pParent->drawable.class == InputOnly))
+    {
+	*error = BadMatch;
+	return NullWindow;
+    }
+
+    if ((class == InputOnly) && ((bw != 0) || (depth != 0)))
+    {
+	*error = BadMatch;
+	return NullWindow;
+    }
+
+    pScreen = pParent->drawable.pScreen;
+    if ((class == InputOutput) && (depth == 0))
+	 depth = pParent->drawable.depth;
+    ancwopt = pParent->optional;
+    if (!ancwopt)
+	ancwopt = FindWindowWithOptional(pParent)->optional;
+    if (visual == CopyFromParent) {
+	visual = ancwopt->visual;
+    }
+
+    /* Find out if the depth and visual are acceptable for this Screen */
+    if ((visual != ancwopt->visual) || (depth != pParent->drawable.depth))
+    {
+	fOK = FALSE;
+	for(idepth = 0; idepth < pScreen->numDepths; idepth++)
+	{
+	    pDepth = (DepthPtr) &pScreen->allowedDepths[idepth];
+	    if ((depth == pDepth->depth) || (depth == 0))
+	    {
+		for (ivisual = 0; ivisual < pDepth->numVids; ivisual++)
+		{
+		    if (visual == pDepth->vids[ivisual])
+		    {
+			fOK = TRUE;
+			break;
+		    }
+		}
+	    }
+	}
+	if (fOK == FALSE)
+	{
+	    *error = BadMatch;
+	    return NullWindow;
+	}
+    }
+
+    if (((vmask & (CWBorderPixmap | CWBorderPixel)) == 0) &&
+	(class != InputOnly) &&
+	(depth != pParent->drawable.depth))
+    {
+	*error = BadMatch;
+	return NullWindow;
+    }
+
+    if (((vmask & CWColormap) == 0) &&
+	(class != InputOnly) &&
+	((visual != ancwopt->visual) || (ancwopt->colormap == None)))
+    {
+	*error = BadMatch;
+	return NullWindow;
+    }
+
+    pWin = dixAllocateObjectWithPrivates(WindowRec, PRIVATE_WINDOW);
+    if (!pWin)
+    {
+	*error = BadAlloc;
+	return NullWindow;
+    }
+    pWin->drawable = pParent->drawable;
+    pWin->drawable.depth = depth;
+    if (depth == pParent->drawable.depth)
+	pWin->drawable.bitsPerPixel = pParent->drawable.bitsPerPixel;
+    else
+    {
+	for (format = screenInfo.formats; format->depth != depth; format++)
+	    ;
+	pWin->drawable.bitsPerPixel = format->bitsPerPixel;
+    }
+    if (class == InputOnly)
+	pWin->drawable.type = (short) UNDRAWABLE_WINDOW;
+    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+
+    pWin->drawable.id = wid;
+    pWin->drawable.class = class;
+
+    pWin->parent = pParent;
+    SetWindowToDefaults(pWin);
+
+    if (visual != ancwopt->visual)
+    {
+	if (!MakeWindowOptional (pWin))
+	{
+	    dixFreeObjectWithPrivates(pWin, PRIVATE_WINDOW);
+	    *error = BadAlloc;
+	    return NullWindow;
+	}
+	pWin->optional->visual = visual;
+	pWin->optional->colormap = None;
+    }
+
+    pWin->borderWidth = bw;
+
+    /*  security creation/labeling check
+     */
+    *error = XaceHook(XACE_RESOURCE_ACCESS, client, wid, RT_WINDOW, pWin,
+		RT_WINDOW, pWin->parent, DixCreateAccess|DixSetAttrAccess);
+    if (*error != Success) {
+	dixFreeObjectWithPrivates(pWin, PRIVATE_WINDOW);
+	return NullWindow;
+    }
+
+    pWin->backgroundState = XaceBackgroundNoneState(pWin);
+    pWin->background.pixel = pScreen->whitePixel;
+
+    pWin->borderIsPixel = pParent->borderIsPixel;
+    pWin->border = pParent->border;
+    if (pWin->borderIsPixel == FALSE)
+	pWin->border.pixmap->refcnt++;
+		
+    pWin->origin.x = x + (int)bw;
+    pWin->origin.y = y + (int)bw;
+    pWin->drawable.width = w;
+    pWin->drawable.height = h;
+    pWin->drawable.x = pParent->drawable.x + x + (int)bw;
+    pWin->drawable.y = pParent->drawable.y + y + (int)bw;
+
+	/* set up clip list correctly for unobscured WindowPtr */
+    RegionNull(&pWin->clipList);
+    RegionNull(&pWin->borderClip);
+    RegionNull(&pWin->winSize);
+    RegionNull(&pWin->borderSize);
+
+    pHead = RealChildHead(pParent);
+    if (pHead)
+    {
+	pWin->nextSib = pHead->nextSib;
+	if (pHead->nextSib)
+	    pHead->nextSib->prevSib = pWin;
+	else
+	    pParent->lastChild = pWin;
+	pHead->nextSib = pWin;
+	pWin->prevSib = pHead;
+    }
+    else
+    {
+	pWin->nextSib = pParent->firstChild;
+	if (pParent->firstChild)
+	    pParent->firstChild->prevSib = pWin;
+	else
+	    pParent->lastChild = pWin;
+	pParent->firstChild = pWin;
+    }
+
+    SetWinSize (pWin);
+    SetBorderSize (pWin);
+
+    /* We SHOULD check for an error value here XXX */
+    if (!(*pScreen->CreateWindow)(pWin))
+    {
+	*error = BadAlloc;
+	DeleteWindow(pWin, None);
+	return NullWindow;
+    }
+    /* We SHOULD check for an error value here XXX */
+    (*pScreen->PositionWindow)(pWin, pWin->drawable.x, pWin->drawable.y);
+
+    if (!(vmask & CWEventMask))
+	RecalculateDeliverableEvents(pWin);
+
+    if (vmask)
+	*error = ChangeWindowAttributes(pWin, vmask, vlist, wClient (pWin));
+    else
+	*error = Success;
+
+    if (*error != Success)
+    {
+	DeleteWindow(pWin, None);
+	return NullWindow;
+    }
+    if (!(vmask & CWBackingStore) && (defaultBackingStore != NotUseful))
+    {
+	XID value = defaultBackingStore;
+	(void)ChangeWindowAttributes(pWin, CWBackingStore, &value, wClient (pWin));
+	pWin->forcedBS = TRUE;
+    }
+
+    if (SubSend(pParent))
+    {
+	memset(&event, 0, sizeof(xEvent));
+	event.u.u.type = CreateNotify;
+	event.u.createNotify.window = wid;
+	event.u.createNotify.parent = pParent->drawable.id;
+	event.u.createNotify.x = x;
+	event.u.createNotify.y = y;
+	event.u.createNotify.width = w;
+	event.u.createNotify.height = h;
+	event.u.createNotify.borderWidth = bw;
+	event.u.createNotify.override = pWin->overrideRedirect;
+	DeliverEvents(pParent, &event, 1, NullWindow);		
+    }
+    return pWin;
+}
+
+static void
+DisposeWindowOptional (WindowPtr pWin)
+{
+    if (!pWin->optional)
+	return;
+    /*
+     * everything is peachy.  Delete the optional record
+     * and clean up
+     */
+    if (pWin->optional->cursor)
+    {
+	FreeCursor (pWin->optional->cursor, (Cursor)0);
+	pWin->cursorIsNone = FALSE;
+    }
+    else
+	pWin->cursorIsNone = TRUE;
+
+    if (pWin->optional->deviceCursors)
+    {
+        DevCursorList pList;
+        DevCursorList pPrev;
+        pList = pWin->optional->deviceCursors;
+        while(pList)
+        {
+            if (pList->cursor)
+                FreeCursor(pList->cursor, (XID)0);
+            pPrev = pList;
+            pList = pList->next;
+            free(pPrev);
+        }
+        pWin->optional->deviceCursors = NULL;
+    }
+
+    free(pWin->optional);
+    pWin->optional = NULL;
+}
+
+static void
+FreeWindowResources(WindowPtr pWin)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+
+    DeleteWindowFromAnySaveSet(pWin);
+    DeleteWindowFromAnySelections(pWin);
+    DeleteWindowFromAnyEvents(pWin, TRUE);
+    RegionUninit(&pWin->clipList);
+    RegionUninit(&pWin->winSize);
+    RegionUninit(&pWin->borderClip);
+    RegionUninit(&pWin->borderSize);
+    if (wBoundingShape (pWin))
+	RegionDestroy(wBoundingShape (pWin));
+    if (wClipShape (pWin))
+	RegionDestroy(wClipShape (pWin));
+    if (wInputShape (pWin))
+	RegionDestroy(wInputShape (pWin));
+    if (pWin->borderIsPixel == FALSE)
+	(*pScreen->DestroyPixmap)(pWin->border.pixmap);
+    if (pWin->backgroundState == BackgroundPixmap)
+	(*pScreen->DestroyPixmap)(pWin->background.pixmap);
+
+    DeleteAllWindowProperties(pWin);
+    /* We SHOULD check for an error value here XXX */
+    (*pScreen->DestroyWindow)(pWin);
+    DisposeWindowOptional (pWin);
+}
+
+static void
+CrushTree(WindowPtr pWin)
+{
+    WindowPtr pChild, pSib, pParent;
+    UnrealizeWindowProcPtr UnrealizeWindow;
+    xEvent event;
+
+    if (!(pChild = pWin->firstChild))
+	return;
+    UnrealizeWindow = pWin->drawable.pScreen->UnrealizeWindow;
+    while (1)
+    {
+	if (pChild->firstChild)
+	{
+	    pChild = pChild->firstChild;
+	    continue;
+	}
+	while (1)
+	{
+	    pParent = pChild->parent;
+	    if (SubStrSend(pChild, pParent))
+	    {
+		memset(&event, 0, sizeof(xEvent));
+		event.u.u.type = DestroyNotify;
+		event.u.destroyNotify.window = pChild->drawable.id;
+		DeliverEvents(pChild, &event, 1, NullWindow);
+	    }
+	    FreeResource(pChild->drawable.id, RT_WINDOW);
+	    pSib = pChild->nextSib;
+	    pChild->viewable = FALSE;
+	    if (pChild->realized)
+	    {
+		pChild->realized = FALSE;
+		(*UnrealizeWindow)(pChild);
+	    }
+	    FreeWindowResources(pChild);
+	    dixFreeObjectWithPrivates(pChild, PRIVATE_WINDOW);
+	    if ( (pChild = pSib) )
+		break;
+	    pChild = pParent;
+	    pChild->firstChild = NullWindow;
+	    pChild->lastChild = NullWindow;
+	    if (pChild == pWin)
+		return;
+	}
+    }
+}
+	
+/*****
+ *  DeleteWindow
+ *	 Deletes child of window then window itself
+ *	 If wid is None, don't send any events
+ *****/
+
+int
+DeleteWindow(pointer value, XID wid)
+ {
+    WindowPtr pParent;
+    WindowPtr pWin = (WindowPtr)value;
+    xEvent event;
+
+    UnmapWindow(pWin, FALSE);
+
+    CrushTree(pWin);
+
+    pParent = pWin->parent;
+    if (wid && pParent && SubStrSend(pWin, pParent))
+    {
+	memset(&event, 0, sizeof(xEvent));
+	event.u.u.type = DestroyNotify;
+	event.u.destroyNotify.window = pWin->drawable.id;
+	DeliverEvents(pWin, &event, 1, NullWindow);
+    }
+
+    FreeWindowResources(pWin);
+    if (pParent)
+    {
+	if (pParent->firstChild == pWin)
+	    pParent->firstChild = pWin->nextSib;
+	if (pParent->lastChild == pWin)
+	    pParent->lastChild = pWin->prevSib;
+	if (pWin->nextSib)
+	    pWin->nextSib->prevSib = pWin->prevSib;
+	if (pWin->prevSib)
+	    pWin->prevSib->nextSib = pWin->nextSib;
+    }
+    else
+	pWin->drawable.pScreen->root = NULL;
+    dixFreeObjectWithPrivates(pWin, PRIVATE_WINDOW);
+    return Success;
+}
+
+int
+DestroySubwindows(WindowPtr pWin, ClientPtr client)
+{
+    /* XXX
+     * The protocol is quite clear that each window should be
+     * destroyed in turn, however, unmapping all of the first
+     * eliminates most of the calls to ValidateTree.  So,
+     * this implementation is incorrect in that all of the
+     * UnmapNotifies occur before all of the DestroyNotifies.
+     * If you care, simply delete the call to UnmapSubwindows.
+     */
+    UnmapSubwindows(pWin);
+    while (pWin->lastChild) {
+	int rc = XaceHook(XACE_RESOURCE_ACCESS, client,
+			  pWin->lastChild->drawable.id, RT_WINDOW,
+			  pWin->lastChild, RT_NONE, NULL, DixDestroyAccess);
+	if (rc != Success)
+	    return rc;
+	FreeResource(pWin->lastChild->drawable.id, RT_NONE);
+    }
+    return Success;
+}
+
+static void
+SetRootWindowBackground(WindowPtr pWin, ScreenPtr pScreen, Mask *index2)
+{
+    /* following the protocol: "Changing the background of a root window to
+     * None or ParentRelative restores the default background pixmap" */
+    if (bgNoneRoot) {
+	pWin->backgroundState = XaceBackgroundNoneState(pWin);
+	pWin->background.pixel = pScreen->whitePixel;
+    }
+    else if (party_like_its_1989)
+	MakeRootTile(pWin);
+    else {
+	if (whiteRoot)
+	    pWin->background.pixel = pScreen->whitePixel;
+	else
+	    pWin->background.pixel = pScreen->blackPixel;
+	*index2 = CWBackPixel;
+    }
+}
+
+/*****
+ *  ChangeWindowAttributes
+ *   
+ *  The value-mask specifies which attributes are to be changed; the
+ *  value-list contains one value for each one bit in the mask, from least
+ *  to most significant bit in the mask.  
+ *****/
+ 
+int
+ChangeWindowAttributes(WindowPtr pWin, Mask vmask, XID *vlist, ClientPtr client)
+{
+    XID *pVlist;
+    PixmapPtr pPixmap;
+    Pixmap pixID;
+    CursorPtr pCursor, pOldCursor;
+    Cursor cursorID;
+    WindowPtr pChild;
+    Colormap cmap;
+    ColormapPtr	pCmap;
+    xEvent xE;
+    int error, rc;
+    ScreenPtr pScreen;
+    Mask index2, tmask, vmaskCopy = 0;
+    unsigned int val;
+    Bool checkOptional = FALSE, borderRelative = FALSE;
+
+    if ((pWin->drawable.class == InputOnly) && (vmask & (~INPUTONLY_LEGAL_MASK)))
+	return BadMatch;
+
+    error = Success;
+    pScreen = pWin->drawable.pScreen;
+    pVlist = vlist;
+    tmask = vmask;
+    while (tmask)
+    {
+	index2 = (Mask) lowbit (tmask);
+	tmask &= ~index2;
+	switch (index2)
+	{
+	  case CWBackPixmap:
+	    pixID = (Pixmap )*pVlist;
+	    pVlist++;
+	    if (pWin->backgroundState == ParentRelative)
+		borderRelative = TRUE;
+	    if (pixID == None)
+	    {
+		if (pWin->backgroundState == BackgroundPixmap)
+		    (*pScreen->DestroyPixmap)(pWin->background.pixmap);
+		if (!pWin->parent)
+		    SetRootWindowBackground(pWin, pScreen, &index2);
+		else {
+		    pWin->backgroundState = XaceBackgroundNoneState(pWin);
+		    pWin->background.pixel = pScreen->whitePixel;
+		}
+	    }
+	    else if (pixID == ParentRelative)
+	    {
+		if (pWin->parent &&
+		    pWin->drawable.depth != pWin->parent->drawable.depth)
+		{
+		    error = BadMatch;
+		    goto PatchUp;
+		}
+		if (pWin->backgroundState == BackgroundPixmap)
+		    (*pScreen->DestroyPixmap)(pWin->background.pixmap);
+		if (!pWin->parent)
+		    SetRootWindowBackground(pWin, pScreen, &index2);
+		else
+		    pWin->backgroundState = ParentRelative;
+		borderRelative = TRUE;
+		/* Note that the parent's backgroundTile's refcnt is NOT
+		 * incremented. */
+	    }
+	    else
+	    {	
+		rc = dixLookupResourceByType((pointer *)&pPixmap, pixID, RT_PIXMAP,
+				       client, DixReadAccess);
+		if (rc == Success)
+		{
+		    if	((pPixmap->drawable.depth != pWin->drawable.depth) ||
+			 (pPixmap->drawable.pScreen != pScreen))
+		    {
+			error = BadMatch;
+			goto PatchUp;
+		    }
+		    if (pWin->backgroundState == BackgroundPixmap)
+			(*pScreen->DestroyPixmap)(pWin->background.pixmap);
+		    pWin->backgroundState = BackgroundPixmap;
+		    pWin->background.pixmap = pPixmap;
+		    pPixmap->refcnt++;
+		}
+		else
+		{
+		    error = rc;
+		    client->errorValue = pixID;
+		    goto PatchUp;
+		}
+	    }
+	    break;
+	  case CWBackPixel:
+	    if (pWin->backgroundState == ParentRelative)
+		borderRelative = TRUE;
+	    if (pWin->backgroundState == BackgroundPixmap)
+		(*pScreen->DestroyPixmap)(pWin->background.pixmap);
+	    pWin->backgroundState = BackgroundPixel;
+	    pWin->background.pixel = (CARD32 ) *pVlist;
+		   /* background pixel overrides background pixmap,
+		      so don't let the ddx layer see both bits */
+	    vmaskCopy &= ~CWBackPixmap;
+	    pVlist++;
+	    break;
+	  case CWBorderPixmap:
+	    pixID = (Pixmap ) *pVlist;
+	    pVlist++;
+	    if (pixID == CopyFromParent)
+	    {
+		if (!pWin->parent ||
+		    (pWin->drawable.depth != pWin->parent->drawable.depth))
+		{
+		    error = BadMatch;
+		    goto PatchUp;
+		}
+		if (pWin->parent->borderIsPixel == TRUE) {
+		    if (pWin->borderIsPixel == FALSE)
+			(*pScreen->DestroyPixmap)(pWin->border.pixmap);
+		    pWin->border = pWin->parent->border;
+		    pWin->borderIsPixel = TRUE;
+		    index2 = CWBorderPixel;
+		    break;
+		}
+		else
+		{
+		    pixID = pWin->parent->border.pixmap->drawable.id;
+		}
+	    }
+	    rc = dixLookupResourceByType((pointer *)&pPixmap, pixID, RT_PIXMAP,
+				   client, DixReadAccess);
+	    if (rc == Success)
+	    {
+		if ((pPixmap->drawable.depth != pWin->drawable.depth) ||
+		    (pPixmap->drawable.pScreen != pScreen))
+		{
+		    error = BadMatch;
+		    goto PatchUp;
+		}
+		if (pWin->borderIsPixel == FALSE)
+		    (*pScreen->DestroyPixmap)(pWin->border.pixmap);
+		pWin->borderIsPixel = FALSE;
+		pWin->border.pixmap = pPixmap;
+		pPixmap->refcnt++;
+	    }
+	    else
+	    {
+		error = rc;
+		client->errorValue = pixID;
+		goto PatchUp;
+	    }
+	    break;
+	  case CWBorderPixel:
+	    if (pWin->borderIsPixel == FALSE)
+		(*pScreen->DestroyPixmap)(pWin->border.pixmap);
+	    pWin->borderIsPixel = TRUE;
+	    pWin->border.pixel = (CARD32) *pVlist;
+		    /* border pixel overrides border pixmap,
+		       so don't let the ddx layer see both bits */
+	    vmaskCopy &= ~CWBorderPixmap;
+	    pVlist++;
+	    break;
+	  case CWBitGravity:
+	    val = (CARD8 )*pVlist;
+	    pVlist++;
+	    if (val > StaticGravity)
+	    {
+		error = BadValue;
+		client->errorValue = val;
+		goto PatchUp;
+	    }
+	    pWin->bitGravity = val;
+	    break;
+	  case CWWinGravity:
+	    val = (CARD8 )*pVlist;
+	    pVlist++;
+	    if (val > StaticGravity)
+	    {
+		error = BadValue;
+		client->errorValue = val;
+		goto PatchUp;
+	    }
+	    pWin->winGravity = val;
+	    break;
+	  case CWBackingStore:
+	    val = (CARD8 )*pVlist;
+	    pVlist++;
+	    if ((val != NotUseful) && (val != WhenMapped) && (val != Always))
+	    {
+		error = BadValue;
+		client->errorValue = val;
+		goto PatchUp;
+	    }
+	    pWin->backingStore = val;
+	    pWin->forcedBS = FALSE;
+	    break;
+	  case CWBackingPlanes:
+	    if (pWin->optional || ((CARD32)*pVlist != (CARD32)~0L)) {
+		if (!pWin->optional && !MakeWindowOptional (pWin))
+		{
+		    error = BadAlloc;
+		    goto PatchUp;
+		}
+		pWin->optional->backingBitPlanes = (CARD32) *pVlist;
+		if ((CARD32)*pVlist == (CARD32)~0L)
+		    checkOptional = TRUE;
+	    }
+	    pVlist++;
+	    break;
+	  case CWBackingPixel:
+	    if (pWin->optional || (CARD32) *pVlist) {
+		if (!pWin->optional && !MakeWindowOptional (pWin))
+		{
+		    error = BadAlloc;
+		    goto PatchUp;
+		}
+		pWin->optional->backingPixel = (CARD32) *pVlist;
+		if (!*pVlist)
+		    checkOptional = TRUE;
+	    }
+	    pVlist++;
+	    break;
+	  case CWSaveUnder:
+	    val = (BOOL) *pVlist;
+	    pVlist++;
+	    if ((val != xTrue) && (val != xFalse))
+	    {
+		error = BadValue;
+		client->errorValue = val;
+		goto PatchUp;
+	    }
+	    pWin->saveUnder = val;
+	    break;
+	  case CWEventMask:
+	    rc = EventSelectForWindow(pWin, client, (Mask )*pVlist);
+	    if (rc)
+	    {
+		error = rc;
+		goto PatchUp;
+	    }
+	    pVlist++;
+	    break;
+	  case CWDontPropagate:
+	    rc = EventSuppressForWindow(pWin, client, (Mask )*pVlist,
+					    &checkOptional);
+	    if (rc)
+	    {
+		error = rc;
+		goto PatchUp;
+	    }
+	    pVlist++;
+	    break;
+	  case CWOverrideRedirect:
+	    val = (BOOL ) *pVlist;
+	    pVlist++;
+	    if ((val != xTrue) && (val != xFalse))
+	    {
+		error = BadValue;
+		client->errorValue = val;
+		goto PatchUp;
+	    }
+	    if (val == xTrue) {
+		rc = XaceHook(XACE_RESOURCE_ACCESS, client, pWin->drawable.id,
+			      RT_WINDOW, pWin, RT_NONE, NULL, DixGrabAccess);
+		if (rc != Success) {
+		    error = rc;
+		    client->errorValue = pWin->drawable.id;
+		    goto PatchUp;
+		}
+	    }
+	    pWin->overrideRedirect = val;
+	    break;
+	  case CWColormap:
+	    cmap = (Colormap) *pVlist;
+	    pVlist++;
+	    if (cmap == CopyFromParent)
+	    {
+		if (pWin->parent &&
+		    (!pWin->optional ||
+		     pWin->optional->visual == wVisual (pWin->parent)))
+		{
+		    cmap = wColormap (pWin->parent);
+		}
+		else
+		    cmap = None;
+	    }
+	    if (cmap == None)
+	    {
+		error = BadMatch;
+		goto PatchUp;
+	    }
+	    rc = dixLookupResourceByType((pointer *)&pCmap, cmap, RT_COLORMAP,
+				   client, DixUseAccess);
+	    if (rc != Success)
+	    {
+		error = rc;
+		client->errorValue = cmap;
+		goto PatchUp;
+	    }
+	    if (pCmap->pVisual->vid != wVisual (pWin) ||
+		pCmap->pScreen != pScreen)
+	    {
+		error = BadMatch;
+		goto PatchUp;
+	    }
+	    if (cmap != wColormap (pWin))
+	    {
+		if (!pWin->optional)
+		{
+		    if (!MakeWindowOptional (pWin))
+		    {
+			error = BadAlloc;
+			goto PatchUp;
+		    }
+		}
+		else if (pWin->parent && cmap == wColormap (pWin->parent))
+		    checkOptional = TRUE;
+
+		/*
+		 * propagate the original colormap to any children
+		 * inheriting it
+		 */
+
+		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
+		{
+		    if (!pChild->optional && !MakeWindowOptional (pChild))
+		    {
+			error = BadAlloc;
+			goto PatchUp;
+		    }
+		}
+
+		pWin->optional->colormap = cmap;
+
+		/*
+		 * check on any children now matching the new colormap
+		 */
+
+		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
+		{
+		    if (pChild->optional->colormap == cmap)
+			CheckWindowOptionalNeed (pChild);
+		}
+	
+		xE.u.u.type = ColormapNotify;
+		xE.u.colormap.window = pWin->drawable.id;
+		xE.u.colormap.colormap = cmap;
+		xE.u.colormap.new = xTrue;
+		xE.u.colormap.state = IsMapInstalled(cmap, pWin);
+		DeliverEvents(pWin, &xE, 1, NullWindow);
+	    }
+	    break;
+	  case CWCursor:
+	    cursorID = (Cursor ) *pVlist;
+	    pVlist++;
+	    /*
+	     * install the new
+	     */
+	    if ( cursorID == None)
+	    {
+		if (pWin == pWin->drawable.pScreen->root)
+		    pCursor = rootCursor;
+		else
+		    pCursor = (CursorPtr) None;
+	    }
+	    else
+	    {
+		rc = dixLookupResourceByType((pointer *)&pCursor, cursorID,
+				       RT_CURSOR, client, DixUseAccess);
+		if (rc != Success)
+		{
+		    error = rc;
+		    client->errorValue = cursorID;
+		    goto PatchUp;
+		}
+	    }
+
+	    if (pCursor != wCursor (pWin))
+	    {
+		/*
+		 * patch up child windows so they don't lose cursors.
+		 */
+
+		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
+		{
+		    if (!pChild->optional && !pChild->cursorIsNone &&
+			!MakeWindowOptional (pChild))
+		    {
+			error = BadAlloc;
+			goto PatchUp;
+		    }
+		}
+
+		pOldCursor = 0;
+		if (pCursor == (CursorPtr) None)
+		{
+		    pWin->cursorIsNone = TRUE;
+		    if (pWin->optional)
+		    {
+			pOldCursor = pWin->optional->cursor;
+			pWin->optional->cursor = (CursorPtr) None;
+			checkOptional = TRUE;
+		    }
+		} else {
+		    if (!pWin->optional)
+		    {
+			if (!MakeWindowOptional (pWin))
+			{
+			    error = BadAlloc;
+			    goto PatchUp;
+			}
+		    }
+		    else if (pWin->parent && pCursor == wCursor (pWin->parent))
+			checkOptional = TRUE;
+		    pOldCursor = pWin->optional->cursor;
+		    pWin->optional->cursor = pCursor;
+		    pCursor->refcnt++;
+		    pWin->cursorIsNone = FALSE;
+		    /*
+		     * check on any children now matching the new cursor
+		     */
+
+		    for (pChild=pWin->firstChild; pChild; pChild=pChild->nextSib)
+		    {
+			if (pChild->optional &&
+			    (pChild->optional->cursor == pCursor))
+			    CheckWindowOptionalNeed (pChild);
+		    }
+		}
+
+		if (pWin->realized)
+		    WindowHasNewCursor( pWin);
+
+		/* Can't free cursor until here - old cursor
+		 * is needed in WindowHasNewCursor
+		 */
+		if (pOldCursor)
+		    FreeCursor (pOldCursor, (Cursor)0);
+	    }
+	    break;
+	 default:
+	    error = BadValue;
+	    client->errorValue = vmask;
+	    goto PatchUp;
+      }
+      vmaskCopy |= index2;
+    }
+PatchUp:
+    if (checkOptional)
+	CheckWindowOptionalNeed (pWin);
+
+	/* We SHOULD check for an error value here XXX */
+    (*pScreen->ChangeWindowAttributes)(pWin, vmaskCopy);
+
+    /* 
+	If the border contents have changed, redraw the border. 
+	Note that this has to be done AFTER pScreen->ChangeWindowAttributes
+	for the tile to be rotated, and the correct function selected.
+    */
+    if (((vmaskCopy & (CWBorderPixel | CWBorderPixmap)) || borderRelative)
+	&& pWin->viewable && HasBorder (pWin))
+    {
+	RegionRec exposed;
+
+	RegionNull(&exposed);
+	RegionSubtract(&exposed, &pWin->borderClip, &pWin->winSize);
+	miPaintWindow(pWin, &exposed, PW_BORDER);
+	RegionUninit(&exposed);
+    }
+    return error;
+}
+
+
+/*****
+ * GetWindowAttributes
+ *    Notice that this is different than ChangeWindowAttributes
+ *****/
+
+void
+GetWindowAttributes(WindowPtr pWin, ClientPtr client, xGetWindowAttributesReply *wa)
+{
+    wa->type = X_Reply;
+    wa->bitGravity = pWin->bitGravity;
+    wa->winGravity = pWin->winGravity;
+    if (pWin->forcedBS && pWin->backingStore != Always)
+	wa->backingStore = NotUseful;
+    else
+	wa->backingStore = pWin->backingStore;
+    wa->length = bytes_to_int32(sizeof(xGetWindowAttributesReply) -
+		 sizeof(xGenericReply));
+    wa->sequenceNumber = client->sequence;
+    wa->backingBitPlanes =  wBackingBitPlanes (pWin);
+    wa->backingPixel =  wBackingPixel (pWin);
+    wa->saveUnder = (BOOL)pWin->saveUnder;
+    wa->override = pWin->overrideRedirect;
+    if (!pWin->mapped)
+	wa->mapState = IsUnmapped;
+    else if (pWin->realized)
+	wa->mapState = IsViewable;
+    else
+	wa->mapState = IsUnviewable;
+
+    wa->colormap =  wColormap (pWin);
+    wa->mapInstalled = (wa->colormap == None) ? xFalse
+				: IsMapInstalled(wa->colormap, pWin);
+
+    wa->yourEventMask = EventMaskForClient(pWin, client);
+    wa->allEventMasks = pWin->eventMask | wOtherEventMasks (pWin);
+    wa->doNotPropagateMask = wDontPropagateMask (pWin);
+    wa->class = pWin->drawable.class;
+    wa->visualID = wVisual (pWin);
+}
+
+
+WindowPtr
+MoveWindowInStack(WindowPtr pWin, WindowPtr pNextSib)
+{
+    WindowPtr pParent = pWin->parent;
+    WindowPtr pFirstChange = pWin; /* highest window where list changes */
+
+    if (pWin->nextSib != pNextSib)
+    {
+	WindowPtr pOldNextSib = pWin->nextSib;
+
+	if (!pNextSib)	      /* move to bottom */
+	{
+	    if (pParent->firstChild == pWin)
+		pParent->firstChild = pWin->nextSib;
+	    /* if (pWin->nextSib) */	 /* is always True: pNextSib == NULL
+					  * and pWin->nextSib != pNextSib
+					  * therefore pWin->nextSib != NULL */
+	    pFirstChange = pWin->nextSib;
+	    pWin->nextSib->prevSib = pWin->prevSib;
+	    if (pWin->prevSib)
+		pWin->prevSib->nextSib = pWin->nextSib;
+	    pParent->lastChild->nextSib = pWin;
+	    pWin->prevSib = pParent->lastChild;
+	    pWin->nextSib = NullWindow;
+	    pParent->lastChild = pWin;
+	}
+	else if (pParent->firstChild == pNextSib) /* move to top */
+	{
+	    pFirstChange = pWin;
+	    if (pParent->lastChild == pWin)
+	       pParent->lastChild = pWin->prevSib;
+	    if (pWin->nextSib)
+		pWin->nextSib->prevSib = pWin->prevSib;
+	    if (pWin->prevSib)
+		pWin->prevSib->nextSib = pWin->nextSib;
+	    pWin->nextSib = pParent->firstChild;
+	    pWin->prevSib = (WindowPtr ) NULL;
+	    pNextSib->prevSib = pWin;
+	    pParent->firstChild = pWin;
+	}
+	else			/* move in middle of list */
+	{
+	    WindowPtr pOldNext = pWin->nextSib;
+
+	    pFirstChange = NullWindow;
+	    if (pParent->firstChild == pWin)
+		pFirstChange = pParent->firstChild = pWin->nextSib;
+	    if (pParent->lastChild == pWin) {
+	       pFirstChange = pWin;
+	       pParent->lastChild = pWin->prevSib;
+	    }
+	    if (pWin->nextSib)
+		pWin->nextSib->prevSib = pWin->prevSib;
+	    if (pWin->prevSib)
+		pWin->prevSib->nextSib = pWin->nextSib;
+	    pWin->nextSib = pNextSib;
+	    pWin->prevSib = pNextSib->prevSib;
+	    if (pNextSib->prevSib)
+		pNextSib->prevSib->nextSib = pWin;
+	    pNextSib->prevSib = pWin;
+	    if (!pFirstChange) {		     /* do we know it yet? */
+		pFirstChange = pParent->firstChild;  /* no, search from top */
+		while ((pFirstChange != pWin) && (pFirstChange != pOldNext))
+		     pFirstChange = pFirstChange->nextSib;
+	    }
+	}
+	if(pWin->drawable.pScreen->RestackWindow)
+	    (*pWin->drawable.pScreen->RestackWindow)(pWin, pOldNextSib);
+    }
+
+#ifdef ROOTLESS
+    /*
+     * In rootless mode we can't optimize away window restacks.
+     * There may be non-X windows around, so even if the window
+     * is in the correct position from X's point of view,
+     * the underlying window system may want to reorder it.
+     */
+    else if (pWin->drawable.pScreen->RestackWindow)
+        (*pWin->drawable.pScreen->RestackWindow)(pWin, pWin->nextSib);
+#endif
+
+    return pFirstChange;
+}
+
+void
+SetWinSize (WindowPtr pWin)
+{
+#ifdef COMPOSITE
+    if (pWin->redirectDraw != RedirectDrawNone)
+    {
+	BoxRec	box;
+
+	/*
+	 * Redirected clients get clip list equal to their
+	 * own geometry, not clipped to their parent
+	 */
+	box.x1 = pWin->drawable.x;
+	box.y1 = pWin->drawable.y;
+	box.x2 = pWin->drawable.x + pWin->drawable.width;
+	box.y2 = pWin->drawable.y + pWin->drawable.height;
+	RegionReset(&pWin->winSize, &box);
+    }
+    else
+#endif
+    ClippedRegionFromBox(pWin->parent, &pWin->winSize,
+			 pWin->drawable.x, pWin->drawable.y,
+			 (int)pWin->drawable.width,
+			 (int)pWin->drawable.height);
+    if (wBoundingShape (pWin) || wClipShape (pWin)) {
+	RegionTranslate(&pWin->winSize, - pWin->drawable.x,
+			 - pWin->drawable.y);
+	if (wBoundingShape (pWin))
+	    RegionIntersect(&pWin->winSize, &pWin->winSize,
+			     wBoundingShape (pWin));
+	if (wClipShape (pWin))
+	    RegionIntersect(&pWin->winSize, &pWin->winSize,
+			     wClipShape (pWin));
+	RegionTranslate(&pWin->winSize, pWin->drawable.x,
+			 pWin->drawable.y);
+    }
+}
+
+void
+SetBorderSize (WindowPtr pWin)
+{
+    int	bw;
+
+    if (HasBorder (pWin)) {
+	bw = wBorderWidth (pWin);
+#ifdef COMPOSITE
+	if (pWin->redirectDraw != RedirectDrawNone)
+	{
+	    BoxRec	box;
+
+	    /*
+	     * Redirected clients get clip list equal to their
+	     * own geometry, not clipped to their parent
+	     */
+	    box.x1 = pWin->drawable.x - bw;
+	    box.y1 = pWin->drawable.y - bw;
+	    box.x2 = pWin->drawable.x + pWin->drawable.width + bw;
+	    box.y2 = pWin->drawable.y + pWin->drawable.height + bw;
+	    RegionReset(&pWin->borderSize, &box);
+	}
+	else
+#endif
+	ClippedRegionFromBox(pWin->parent, &pWin->borderSize,
+		pWin->drawable.x - bw, pWin->drawable.y - bw,
+		(int)(pWin->drawable.width + (bw<<1)),
+		(int)(pWin->drawable.height + (bw<<1)));
+	if (wBoundingShape (pWin)) {
+	    RegionTranslate(&pWin->borderSize, - pWin->drawable.x,
+			     - pWin->drawable.y);
+	    RegionIntersect(&pWin->borderSize, &pWin->borderSize,
+			     wBoundingShape (pWin));
+	    RegionTranslate(&pWin->borderSize, pWin->drawable.x,
+			     pWin->drawable.y);
+	    RegionUnion(&pWin->borderSize, &pWin->borderSize,
+			 &pWin->winSize);
+	}
+    } else {
+	RegionCopy(&pWin->borderSize, &pWin->winSize);
+    }
+}
+
+/**
+ *
+ *  \param x,y          new window position
+ *  \param oldx,oldy    old window position
+ *  \param destx,desty  position relative to gravity
+ */
+
+void
+GravityTranslate (int x, int y, int oldx, int oldy,
+                  int dw, int dh, unsigned gravity,
+                  int *destx, int *desty)
+{
+    switch (gravity) {
+    case NorthGravity:
+	*destx = x + dw / 2;
+	*desty = y;
+	break;
+    case NorthEastGravity:
+	*destx = x + dw;
+	*desty = y;
+	break;
+    case WestGravity:
+	*destx = x;
+	*desty = y + dh / 2;
+	break;
+    case CenterGravity:
+	*destx = x + dw / 2;
+	*desty = y + dh / 2;
+	break;
+    case EastGravity:
+	*destx = x + dw;
+	*desty = y + dh / 2;
+	break;
+    case SouthWestGravity:
+	*destx = x;
+	*desty = y + dh;
+	break;
+    case SouthGravity:
+	*destx = x + dw / 2;
+	*desty = y + dh;
+	break;
+    case SouthEastGravity:
+	*destx = x + dw;
+	*desty = y + dh;
+	break;
+    case StaticGravity:
+	*destx = oldx;
+	*desty = oldy;
+	break;
+    default:
+	*destx = x;
+	*desty = y;
+	break;
+    }
+}
+
+/* XXX need to retile border on each window with ParentRelative origin */
+void
+ResizeChildrenWinSize(WindowPtr pWin, int dx, int dy, int dw, int dh)
+{
+    ScreenPtr pScreen;
+    WindowPtr pSib, pChild;
+    Bool resized = (dw || dh);
+
+    pScreen = pWin->drawable.pScreen;
+
+    for (pSib = pWin->firstChild; pSib; pSib = pSib->nextSib)
+    {
+	if (resized && (pSib->winGravity > NorthWestGravity))
+	{
+	    int cwsx, cwsy;
+
+	    cwsx = pSib->origin.x;
+	    cwsy = pSib->origin.y;
+	    GravityTranslate (cwsx, cwsy, cwsx - dx, cwsy - dy, dw, dh,
+			pSib->winGravity, &cwsx, &cwsy);
+	    if (cwsx != pSib->origin.x || cwsy != pSib->origin.y)
+	    {
+		xEvent event;
+
+		event.u.u.type = GravityNotify;
+		event.u.gravity.window = pSib->drawable.id;
+		event.u.gravity.x = cwsx - wBorderWidth (pSib);
+		event.u.gravity.y = cwsy - wBorderWidth (pSib);
+		DeliverEvents (pSib, &event, 1, NullWindow);
+		pSib->origin.x = cwsx;
+		pSib->origin.y = cwsy;
+	    }
+	}
+	pSib->drawable.x = pWin->drawable.x + pSib->origin.x;
+	pSib->drawable.y = pWin->drawable.y + pSib->origin.y;
+	SetWinSize (pSib);
+	SetBorderSize (pSib);
+	(*pScreen->PositionWindow)(pSib, pSib->drawable.x, pSib->drawable.y);
+
+	if ( (pChild = pSib->firstChild) )
+	{
+	    while (1)
+	    {
+		pChild->drawable.x = pChild->parent->drawable.x +
+				     pChild->origin.x;
+		pChild->drawable.y = pChild->parent->drawable.y +
+				     pChild->origin.y;
+		SetWinSize (pChild);
+		SetBorderSize (pChild);
+		(*pScreen->PositionWindow)(pChild,
+				    pChild->drawable.x, pChild->drawable.y);
+		if (pChild->firstChild)
+		{
+		    pChild = pChild->firstChild;
+		    continue;
+		}
+		while (!pChild->nextSib && (pChild != pSib))
+		    pChild = pChild->parent;
+		if (pChild == pSib)
+		    break;
+		pChild = pChild->nextSib;
+	    }
+	}
+    }
+}
+
+#define GET_INT16(m, f) \
+	if (m & mask) \
+	  { \
+	     f = (INT16) *pVlist;\
+	    pVlist++; \
+	 }
+#define GET_CARD16(m, f) \
+	if (m & mask) \
+	 { \
+	    f = (CARD16) *pVlist;\
+	    pVlist++;\
+	 }
+
+#define GET_CARD8(m, f) \
+	if (m & mask) \
+	 { \
+	    f = (CARD8) *pVlist;\
+	    pVlist++;\
+	 }
+
+#define ChangeMask ((Mask)(CWX | CWY | CWWidth | CWHeight))
+
+#define IllegalInputOnlyConfigureMask (CWBorderWidth)
+
+/*
+ * IsSiblingAboveMe
+ *     returns Above if pSib above pMe in stack or Below otherwise 
+ */
+
+static int
+IsSiblingAboveMe(
+    WindowPtr pMe,
+    WindowPtr pSib)
+{
+    WindowPtr pWin;
+
+    pWin = pMe->parent->firstChild;
+    while (pWin)
+    {
+	if (pWin == pSib)
+	    return Above;
+	else if (pWin == pMe)
+	    return Below;
+	pWin = pWin->nextSib;
+    }
+    return Below;
+}
+
+static BoxPtr
+WindowExtents(
+    WindowPtr pWin,
+    BoxPtr pBox)
+{
+    pBox->x1 = pWin->drawable.x - wBorderWidth (pWin);
+    pBox->y1 = pWin->drawable.y - wBorderWidth (pWin);
+    pBox->x2 = pWin->drawable.x + (int)pWin->drawable.width
+	       + wBorderWidth (pWin);
+    pBox->y2 = pWin->drawable.y + (int)pWin->drawable.height
+	       + wBorderWidth (pWin);
+    return pBox;
+}
+
+#define IS_SHAPED(pWin)	(wBoundingShape (pWin) != (RegionPtr) NULL)
+
+static RegionPtr
+MakeBoundingRegion (
+    WindowPtr	pWin,
+    BoxPtr	pBox)
+{
+    RegionPtr	pRgn = RegionCreate(pBox, 1);
+    if (wBoundingShape (pWin)) {
+	RegionTranslate(pRgn, -pWin->origin.x, -pWin->origin.y);
+	RegionIntersect(pRgn, pRgn, wBoundingShape (pWin));
+	RegionTranslate(pRgn, pWin->origin.x, pWin->origin.y);
+    }
+    return pRgn;
+}
+
+static Bool
+ShapeOverlap (
+    WindowPtr	pWin,
+    BoxPtr	pWinBox,
+    WindowPtr	pSib,
+    BoxPtr	pSibBox)
+{
+    RegionPtr	pWinRgn, pSibRgn;
+    Bool	ret;
+
+    if (!IS_SHAPED(pWin) && !IS_SHAPED(pSib))
+	return TRUE;
+    pWinRgn = MakeBoundingRegion (pWin, pWinBox);
+    pSibRgn = MakeBoundingRegion (pSib, pSibBox);
+    RegionIntersect(pWinRgn, pWinRgn, pSibRgn);
+    ret = RegionNotEmpty(pWinRgn);
+    RegionDestroy(pWinRgn);
+    RegionDestroy(pSibRgn);
+    return ret;
+}
+
+static Bool
+AnyWindowOverlapsMe(
+    WindowPtr pWin,
+    WindowPtr pHead,
+    BoxPtr box)
+{
+    WindowPtr pSib;
+    BoxRec sboxrec;
+    BoxPtr sbox;
+
+    for (pSib = pWin->prevSib; pSib != pHead; pSib = pSib->prevSib)
+    {
+	if (pSib->mapped)
+	{
+	    sbox = WindowExtents(pSib, &sboxrec);
+	    if (BOXES_OVERLAP(sbox, box)
+	    && ShapeOverlap (pWin, box, pSib, sbox)
+	    )
+		return TRUE;
+	}
+    }
+    return FALSE;
+}
+
+static Bool
+IOverlapAnyWindow(
+    WindowPtr pWin,
+    BoxPtr box)
+{
+    WindowPtr pSib;
+    BoxRec sboxrec;
+    BoxPtr sbox;
+
+    for (pSib = pWin->nextSib; pSib; pSib = pSib->nextSib)
+    {
+	if (pSib->mapped)
+	{
+	    sbox = WindowExtents(pSib, &sboxrec);
+	    if (BOXES_OVERLAP(sbox, box)
+	    && ShapeOverlap (pWin, box, pSib, sbox)
+	    )
+		return TRUE;
+	}
+    }
+    return FALSE;
+}
+
+/*
+ *   WhereDoIGoInTheStack() 
+ *	  Given pWin and pSib and the relationshipe smode, return
+ *	  the window that pWin should go ABOVE.
+ *	  If a pSib is specified:
+ *	      Above:  pWin is placed just above pSib
+ *	      Below:  pWin is placed just below pSib
+ *	      TopIf:  if pSib occludes pWin, then pWin is placed
+ *		      at the top of the stack
+ *	      BottomIf:	 if pWin occludes pSib, then pWin is 
+ *			 placed at the bottom of the stack
+ *	      Opposite: if pSib occludes pWin, then pWin is placed at the
+ *			top of the stack, else if pWin occludes pSib, then
+ *			pWin is placed at the bottom of the stack
+ *
+ *	  If pSib is NULL:
+ *	      Above:  pWin is placed at the top of the stack
+ *	      Below:  pWin is placed at the bottom of the stack
+ *	      TopIf:  if any sibling occludes pWin, then pWin is placed at
+ *		      the top of the stack
+ *	      BottomIf: if pWin occludes any sibline, then pWin is placed at
+ *			the bottom of the stack
+ *	      Opposite: if any sibling occludes pWin, then pWin is placed at
+ *			the top of the stack, else if pWin occludes any
+ *			sibling, then pWin is placed at the bottom of the stack
+ *
+ */
+
+static WindowPtr
+WhereDoIGoInTheStack(
+    WindowPtr pWin,
+    WindowPtr pSib,
+    short x,
+    short y,
+    unsigned short w,
+    unsigned short h,
+    int smode)
+{
+    BoxRec box;
+    WindowPtr pHead, pFirst;
+
+    if ((pWin == pWin->parent->firstChild) &&
+	(pWin == pWin->parent->lastChild))
+	return((WindowPtr ) NULL);
+    pHead = RealChildHead(pWin->parent);
+    pFirst = pHead ? pHead->nextSib : pWin->parent->firstChild;
+    box.x1 = x;
+    box.y1 = y;
+    box.x2 = x + (int)w;
+    box.y2 = y + (int)h;
+    switch (smode)
+    {
+      case Above:
+	if (pSib)
+	   return pSib;
+	else if (pWin == pFirst)
+	    return pWin->nextSib;
+	else
+	    return pFirst;
+      case Below:
+	if (pSib)
+	    if (pSib->nextSib != pWin)
+		return pSib->nextSib;
+	    else
+		return pWin->nextSib;
+	else
+	    return NullWindow;
+      case TopIf:
+	if ((!pWin->mapped || (pSib && !pSib->mapped)))
+	    return pWin->nextSib;
+	else if (pSib)
+	{
+	    if ((IsSiblingAboveMe(pWin, pSib) == Above) &&
+		(RegionContainsRect(&pSib->borderSize, &box) != rgnOUT))
+		return pFirst;
+	    else
+		return pWin->nextSib;
+	}
+	else if (AnyWindowOverlapsMe(pWin, pHead, &box))
+	    return pFirst;
+	else
+	    return pWin->nextSib;
+      case BottomIf:
+	if ((!pWin->mapped || (pSib && !pSib->mapped)))
+	    return pWin->nextSib;
+	else if (pSib)
+	{
+	    if ((IsSiblingAboveMe(pWin, pSib) == Below) &&
+		(RegionContainsRect(&pSib->borderSize, &box) != rgnOUT))
+		return NullWindow;
+	    else
+		return pWin->nextSib;
+	}
+	else if (IOverlapAnyWindow(pWin, &box))
+	    return NullWindow;
+	else
+	    return pWin->nextSib;
+      case Opposite:
+	if ((!pWin->mapped || (pSib && !pSib->mapped)))
+	    return pWin->nextSib;
+	else if (pSib)
+	{
+	    if (RegionContainsRect(&pSib->borderSize, &box) != rgnOUT)
+	    {
+		if (IsSiblingAboveMe(pWin, pSib) == Above)
+		    return pFirst;
+		else
+		    return NullWindow;
+	    }
+	    else
+		return pWin->nextSib;
+	}
+	else if (AnyWindowOverlapsMe(pWin, pHead, &box))
+	{
+	    /* If I'm occluded, I can't possibly be the first child
+	     * if (pWin == pWin->parent->firstChild)
+	     *	  return pWin->nextSib;
+	     */
+	    return pFirst;
+	}
+	else if (IOverlapAnyWindow(pWin, &box))
+	    return NullWindow;
+	else
+	    return pWin->nextSib;
+      default:
+      {
+	/* should never happen; make something up. */
+	return pWin->nextSib;
+      }
+    }
+}
+
+static void
+ReflectStackChange(
+    WindowPtr pWin,
+    WindowPtr pSib,
+    VTKind  kind)
+{
+/* Note that pSib might be NULL */
+
+    Bool WasViewable = (Bool)pWin->viewable;
+    Bool anyMarked;
+    WindowPtr pFirstChange;
+    WindowPtr  pLayerWin;
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+
+    /* if this is a root window, can't be restacked */
+    if (!pWin->parent)
+	return;
+
+    pFirstChange = MoveWindowInStack(pWin, pSib);
+
+    if (WasViewable)
+    {
+	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pFirstChange,
+						      &pLayerWin);
+	if (pLayerWin != pWin) pFirstChange = pLayerWin;
+	if (anyMarked)
+	{
+	    (*pScreen->ValidateTree)(pLayerWin->parent, pFirstChange, kind);
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+	}
+	if (anyMarked && pWin->drawable.pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, pFirstChange, kind);
+    }
+    if (pWin->realized)
+	WindowsRestructured ();
+}
+
+/*****
+ * ConfigureWindow
+ *****/
+
+int
+ConfigureWindow(WindowPtr pWin, Mask mask, XID *vlist, ClientPtr client)
+{
+#define RESTACK_WIN    0
+#define MOVE_WIN       1
+#define RESIZE_WIN     2
+#define REBORDER_WIN   3
+    WindowPtr pSib = NullWindow;
+    WindowPtr pParent = pWin->parent;
+    Window sibwid = 0;
+    Mask index2, tmask;
+    XID *pVlist;
+    short x,   y, beforeX, beforeY;
+    unsigned short w = pWin->drawable.width,
+		   h = pWin->drawable.height,
+		   bw = pWin->borderWidth;
+    int rc, action, smode = Above;
+    xEvent event;
+
+    if ((pWin->drawable.class == InputOnly) && (mask & IllegalInputOnlyConfigureMask))
+	return BadMatch;
+
+    if ((mask & CWSibling) && !(mask & CWStackMode))
+	return BadMatch;
+
+    pVlist = vlist;
+
+    if (pParent)
+    {
+	x = pWin->drawable.x - pParent->drawable.x - (int)bw;
+	y = pWin->drawable.y - pParent->drawable.y - (int)bw;
+    }
+    else
+    {
+	x = pWin->drawable.x;
+	y = pWin->drawable.y;
+    }
+    beforeX = x;
+    beforeY = y;
+    action = RESTACK_WIN;	
+    if ((mask & (CWX | CWY)) && (!(mask & (CWHeight | CWWidth))))
+    {
+	GET_INT16(CWX, x);
+	GET_INT16(CWY, y);
+	action = MOVE_WIN;
+    }
+	/* or should be resized */
+    else if (mask & (CWX |  CWY | CWWidth | CWHeight))
+    {
+	GET_INT16(CWX, x);
+	GET_INT16(CWY, y);
+	GET_CARD16(CWWidth, w);
+	GET_CARD16 (CWHeight, h);
+	if (!w || !h)
+	{
+	    client->errorValue = 0;
+	    return BadValue;
+	}
+	action = RESIZE_WIN;
+    }
+    tmask = mask & ~ChangeMask;
+    while (tmask)
+    {
+	index2 = (Mask)lowbit (tmask);
+	tmask &= ~index2;
+	switch (index2)
+	{
+	  case CWBorderWidth:
+	    GET_CARD16(CWBorderWidth, bw);
+	    break;
+	  case CWSibling:
+	    sibwid = (Window ) *pVlist;
+	    pVlist++;
+	    rc = dixLookupWindow(&pSib, sibwid, client, DixGetAttrAccess);
+	    if (rc != Success)
+	    {
+		client->errorValue = sibwid;
+		return rc;
+	    }
+	    if (pSib->parent != pParent)
+		return BadMatch;
+	    if (pSib == pWin)
+		return BadMatch;
+	    break;
+	  case CWStackMode:
+	    GET_CARD8(CWStackMode, smode);
+	    if ((smode != TopIf) && (smode != BottomIf) &&
+		(smode != Opposite) && (smode != Above) && (smode != Below))
+	    {
+		client->errorValue = smode;
+		return BadValue;
+	    }
+	    break;
+	  default:
+	    client->errorValue = mask;
+	    return BadValue;
+	}
+    }
+	/* root really can't be reconfigured, so just return */
+    if (!pParent)
+	return Success;
+
+	/* Figure out if the window should be moved.  Doesnt
+	   make the changes to the window if event sent */
+
+    if (mask & CWStackMode)
+	pSib = WhereDoIGoInTheStack(pWin, pSib, pParent->drawable.x + x,
+				    pParent->drawable.y + y,
+				    w + (bw << 1), h + (bw << 1), smode);
+    else
+	pSib = pWin->nextSib;
+
+
+    if ((!pWin->overrideRedirect) && 
+	(RedirectSend(pParent)
+	))
+    {
+	memset(&event, 0, sizeof(xEvent));
+	event.u.u.type = ConfigureRequest;
+	event.u.configureRequest.window = pWin->drawable.id;
+	if (mask & CWSibling)
+	   event.u.configureRequest.sibling = sibwid;
+	else
+	    event.u.configureRequest.sibling = None;
+	if (mask & CWStackMode)
+	   event.u.u.detail = smode;
+	else
+	    event.u.u.detail = Above;
+	event.u.configureRequest.x = x;
+	event.u.configureRequest.y = y;
+#ifdef PANORAMIX
+	if(!noPanoramiXExtension && (!pParent || !pParent->parent)) {
+            event.u.configureRequest.x += screenInfo.screens[0]->x;
+            event.u.configureRequest.y += screenInfo.screens[0]->y;
+	}
+#endif
+	event.u.configureRequest.width = w;
+	event.u.configureRequest.height = h;
+	event.u.configureRequest.borderWidth = bw;
+	event.u.configureRequest.valueMask = mask;
+	event.u.configureRequest.parent = pParent->drawable.id;
+	if (MaybeDeliverEventsToClient(pParent, &event, 1,
+		SubstructureRedirectMask, client) == 1)
+	    return Success;
+    }
+    if (action == RESIZE_WIN)
+    {
+	Bool size_change = (w != pWin->drawable.width)
+			|| (h != pWin->drawable.height);
+	if (size_change && ((pWin->eventMask|wOtherEventMasks(pWin)) & ResizeRedirectMask))
+	{
+	    xEvent eventT;
+	    memset(&eventT, 0, sizeof(xEvent));
+	    eventT.u.u.type = ResizeRequest;
+	    eventT.u.resizeRequest.window = pWin->drawable.id;
+	    eventT.u.resizeRequest.width = w;
+	    eventT.u.resizeRequest.height = h;
+	    if (MaybeDeliverEventsToClient(pWin, &eventT, 1,
+				       ResizeRedirectMask, client) == 1)
+	    {
+		/* if event is delivered, leave the actual size alone. */
+		w = pWin->drawable.width;
+		h = pWin->drawable.height;
+		size_change = FALSE;
+	    }
+	}
+	if (!size_change)
+	{
+	    if (mask & (CWX | CWY))
+		action = MOVE_WIN;
+	    else if (mask & (CWStackMode | CWBorderWidth))
+		action = RESTACK_WIN;
+	    else   /* really nothing to do */
+		return(Success) ;
+	}
+    }
+
+    if (action == RESIZE_WIN)
+	    /* we've already checked whether there's really a size change */
+	    goto ActuallyDoSomething;
+    if ((mask & CWX) && (x != beforeX))
+	    goto ActuallyDoSomething;
+    if ((mask & CWY) && (y != beforeY))
+	    goto ActuallyDoSomething;
+    if ((mask & CWBorderWidth) && (bw != wBorderWidth (pWin)))
+	    goto ActuallyDoSomething;
+    if (mask & CWStackMode)
+    {
+#ifndef ROOTLESS
+        /* See above for why we always reorder in rootless mode. */
+	if (pWin->nextSib != pSib)
+#endif
+	    goto ActuallyDoSomething;
+    }
+    return Success;
+
+ActuallyDoSomething:
+    if (pWin->drawable.pScreen->ConfigNotify)
+    {
+	int ret;
+	ret = (*pWin->drawable.pScreen->ConfigNotify)(pWin, x, y, w, h, bw, pSib);
+	if (ret) {
+	    client->errorValue = 0;
+	    return ret;
+	}
+    }
+
+    if (SubStrSend(pWin, pParent))
+    {
+	memset(&event, 0, sizeof(xEvent));
+	event.u.u.type = ConfigureNotify;
+	event.u.configureNotify.window = pWin->drawable.id;
+	if (pSib)
+	    event.u.configureNotify.aboveSibling = pSib->drawable.id;
+	else
+	    event.u.configureNotify.aboveSibling = None;
+	event.u.configureNotify.x = x;
+	event.u.configureNotify.y = y;
+#ifdef PANORAMIX
+	if(!noPanoramiXExtension && (!pParent || !pParent->parent)) {
+	    event.u.configureNotify.x += screenInfo.screens[0]->x;
+	    event.u.configureNotify.y += screenInfo.screens[0]->y;
+	}
+#endif
+	event.u.configureNotify.width = w;
+	event.u.configureNotify.height = h;
+	event.u.configureNotify.borderWidth = bw;
+	event.u.configureNotify.override = pWin->overrideRedirect;
+	DeliverEvents(pWin, &event, 1, NullWindow);
+    }
+    if (mask & CWBorderWidth)
+    {
+	if (action == RESTACK_WIN)
+	{
+	    action = MOVE_WIN;
+	    pWin->borderWidth = bw;
+	}
+	else if ((action == MOVE_WIN) &&
+		 (beforeX + wBorderWidth (pWin) == x + (int)bw) &&
+		 (beforeY + wBorderWidth (pWin) == y + (int)bw))
+	{
+	    action = REBORDER_WIN;
+	    (*pWin->drawable.pScreen->ChangeBorderWidth)(pWin, bw);
+	}
+	else
+	    pWin->borderWidth = bw;
+    }
+    if (action == MOVE_WIN)
+	(*pWin->drawable.pScreen->MoveWindow)(pWin, x, y, pSib,
+		   (mask & CWBorderWidth) ? VTOther : VTMove);
+    else if (action == RESIZE_WIN)
+	(*pWin->drawable.pScreen->ResizeWindow)(pWin, x, y, w, h, pSib);
+    else if (mask & CWStackMode)
+	ReflectStackChange(pWin, pSib, VTOther);
+
+    if (action != RESTACK_WIN)
+	CheckCursorConfinement(pWin);
+    return Success;
+#undef RESTACK_WIN
+#undef MOVE_WIN
+#undef RESIZE_WIN
+#undef REBORDER_WIN
+}
+
+
+/******
+ *
+ * CirculateWindow
+ *    For RaiseLowest, raises the lowest mapped child (if any) that is
+ *    obscured by another child to the top of the stack.  For LowerHighest,
+ *    lowers the highest mapped child (if any) that is obscuring another
+ *    child to the bottom of the stack.	 Exposure processing is performed 
+ *
+ ******/
+
+int
+CirculateWindow(WindowPtr pParent, int direction, ClientPtr client)
+{
+    WindowPtr pWin, pHead, pFirst;
+    xEvent event;
+    BoxRec box;
+
+    pHead = RealChildHead(pParent);
+    pFirst = pHead ? pHead->nextSib : pParent->firstChild;
+    if (direction == RaiseLowest)
+    {
+	for (pWin = pParent->lastChild;
+	     (pWin != pHead) &&
+	     !(pWin->mapped &&
+	       AnyWindowOverlapsMe(pWin, pHead, WindowExtents(pWin, &box)));
+	     pWin = pWin->prevSib) ;
+	if (pWin == pHead)
+	    return Success;
+    }
+    else
+    {
+	for (pWin = pFirst;
+	     pWin &&
+	     !(pWin->mapped &&
+	       IOverlapAnyWindow(pWin, WindowExtents(pWin, &box)));
+	     pWin = pWin->nextSib) ;
+	if (!pWin)
+	    return Success;
+    }
+
+    event.u.circulate.window = pWin->drawable.id;
+    event.u.circulate.parent = pParent->drawable.id;
+    event.u.circulate.event = pParent->drawable.id;
+    if (direction == RaiseLowest)
+	event.u.circulate.place = PlaceOnTop;
+    else
+	event.u.circulate.place = PlaceOnBottom;
+
+    if (RedirectSend(pParent))
+    {
+	event.u.u.type = CirculateRequest;
+	if (MaybeDeliverEventsToClient(pParent, &event, 1,
+		SubstructureRedirectMask, client) == 1)
+	    return Success;
+    }
+
+    event.u.u.type = CirculateNotify;
+    DeliverEvents(pWin, &event, 1, NullWindow);
+    ReflectStackChange(pWin,
+		       (direction == RaiseLowest) ? pFirst : NullWindow,
+		       VTStack);
+
+    return Success;
+}
+
+static int
+CompareWIDs(
+    WindowPtr pWin,
+    pointer   value) /* must conform to VisitWindowProcPtr */
+{
+    Window *wid = (Window *)value;
+
+    if (pWin->drawable.id == *wid)
+       return WT_STOPWALKING;
+    else
+       return WT_WALKCHILDREN;
+}
+
+/*****
+ *  ReparentWindow
+ *****/
+
+int
+ReparentWindow(WindowPtr pWin, WindowPtr pParent,
+               int x, int y, ClientPtr client)
+{
+    WindowPtr pPrev, pPriorParent;
+    Bool WasMapped = (Bool)(pWin->mapped);
+    xEvent event;
+    int bw = wBorderWidth (pWin);
+    ScreenPtr pScreen;
+
+    pScreen = pWin->drawable.pScreen;
+    if (TraverseTree(pWin, CompareWIDs, (pointer)&pParent->drawable.id) == WT_STOPWALKING)
+	return BadMatch;
+    if (!MakeWindowOptional(pWin))
+	return BadAlloc;
+
+    if (WasMapped)
+       UnmapWindow(pWin, FALSE);
+
+    memset(&event, 0, sizeof(xEvent));
+    event.u.u.type = ReparentNotify;
+    event.u.reparent.window = pWin->drawable.id;
+    event.u.reparent.parent = pParent->drawable.id;
+    event.u.reparent.x = x;
+    event.u.reparent.y = y;
+#ifdef PANORAMIX
+    if(!noPanoramiXExtension && !pParent->parent) {
+	event.u.reparent.x += screenInfo.screens[0]->x;
+	event.u.reparent.y += screenInfo.screens[0]->y;
+    }
+#endif
+    event.u.reparent.override = pWin->overrideRedirect;
+    DeliverEvents(pWin, &event, 1, pParent);
+
+    /* take out of sibling chain */
+
+    pPriorParent = pPrev = pWin->parent;
+    if (pPrev->firstChild == pWin)
+	pPrev->firstChild = pWin->nextSib;
+    if (pPrev->lastChild == pWin)
+	pPrev->lastChild = pWin->prevSib;
+
+    if (pWin->nextSib)
+	pWin->nextSib->prevSib = pWin->prevSib;
+    if (pWin->prevSib)
+	pWin->prevSib->nextSib = pWin->nextSib;
+
+    /* insert at begining of pParent */
+    pWin->parent = pParent;
+    pPrev = RealChildHead(pParent);
+    if (pPrev)
+    {
+	pWin->nextSib = pPrev->nextSib;
+	if (pPrev->nextSib)
+	    pPrev->nextSib->prevSib = pWin;
+	else
+	    pParent->lastChild = pWin;
+	pPrev->nextSib = pWin;
+	pWin->prevSib = pPrev;
+    }
+    else
+    {
+	pWin->nextSib = pParent->firstChild;
+	pWin->prevSib = NullWindow;
+	if (pParent->firstChild)
+	    pParent->firstChild->prevSib = pWin;
+	else
+	    pParent->lastChild = pWin;
+	pParent->firstChild = pWin;
+    }
+
+    pWin->origin.x = x + bw;
+    pWin->origin.y = y + bw;
+    pWin->drawable.x = x + bw + pParent->drawable.x;
+    pWin->drawable.y = y + bw + pParent->drawable.y;
+
+    /* clip to parent */
+    SetWinSize (pWin);
+    SetBorderSize (pWin);
+
+    if (pScreen->ReparentWindow)
+	(*pScreen->ReparentWindow)(pWin, pPriorParent);
+    (*pScreen->PositionWindow)(pWin, pWin->drawable.x, pWin->drawable.y);
+    ResizeChildrenWinSize(pWin, 0, 0, 0, 0);
+
+    CheckWindowOptionalNeed(pWin);
+
+    if (WasMapped)
+	MapWindow(pWin, client);
+    RecalculateDeliverableEvents(pWin);
+    return Success;
+}
+
+static void
+RealizeTree(WindowPtr pWin)
+{
+    WindowPtr pChild;
+    RealizeWindowProcPtr Realize;
+
+    Realize = pWin->drawable.pScreen->RealizeWindow;
+    pChild = pWin;
+    while (1)
+    {
+	if (pChild->mapped)
+	{
+	    pChild->realized = TRUE;
+	    pChild->viewable = (pChild->drawable.class == InputOutput);
+	    (* Realize)(pChild);
+	    if (pChild->firstChild)
+	    {
+		pChild = pChild->firstChild;
+		continue;
+	    }
+	}
+	while (!pChild->nextSib && (pChild != pWin))
+	    pChild = pChild->parent;
+	if (pChild == pWin)
+	    return;
+	pChild = pChild->nextSib;
+    }
+}
+
+static WindowPtr windowDisableMapUnmapEvents;
+
+void
+DisableMapUnmapEvents(WindowPtr pWin)
+{
+    assert (windowDisableMapUnmapEvents == NULL);
+    
+    windowDisableMapUnmapEvents = pWin;
+}
+
+void
+EnableMapUnmapEvents(WindowPtr pWin)
+{
+    assert (windowDisableMapUnmapEvents != NULL);
+
+    windowDisableMapUnmapEvents = NULL;
+}
+
+static Bool
+MapUnmapEventsEnabled(WindowPtr pWin)
+{
+    return pWin != windowDisableMapUnmapEvents;
+}
+
+/*****
+ * MapWindow
+ *    If some other client has selected SubStructureReDirect on the parent
+ *    and override-redirect is xFalse, then a MapRequest event is generated,
+ *    but the window remains unmapped.	Otherwise, the window is mapped and a
+ *    MapNotify event is generated.
+ *****/
+
+int
+MapWindow(WindowPtr pWin, ClientPtr client)
+{
+    ScreenPtr pScreen;
+
+    WindowPtr pParent;
+    WindowPtr  pLayerWin;
+
+    if (pWin->mapped)
+	return Success;
+
+    /*  general check for permission to map window */
+    if (XaceHook(XACE_RESOURCE_ACCESS, client, pWin->drawable.id, RT_WINDOW,
+		 pWin, RT_NONE, NULL, DixShowAccess) != Success)
+	return Success;
+
+    pScreen = pWin->drawable.pScreen;
+    if ( (pParent = pWin->parent) )
+    {
+	xEvent event;
+	Bool anyMarked;
+
+	if ((!pWin->overrideRedirect) && 
+	    (RedirectSend(pParent)
+	))
+	{
+	    memset(&event, 0, sizeof(xEvent));
+	    event.u.u.type = MapRequest;
+	    event.u.mapRequest.window = pWin->drawable.id;
+	    event.u.mapRequest.parent = pParent->drawable.id;
+
+	    if (MaybeDeliverEventsToClient(pParent, &event, 1,
+		SubstructureRedirectMask, client) == 1)
+		return Success;
+	}
+
+	pWin->mapped = TRUE;
+	if (SubStrSend(pWin, pParent) && MapUnmapEventsEnabled(pWin))
+	{
+	    memset(&event, 0, sizeof(xEvent));
+	    event.u.u.type = MapNotify;
+	    event.u.mapNotify.window = pWin->drawable.id;
+	    event.u.mapNotify.override = pWin->overrideRedirect;
+	    DeliverEvents(pWin, &event, 1, NullWindow);
+	}
+
+	if (!pParent->realized)
+	    return Success;
+	RealizeTree(pWin);
+	if (pWin->viewable)
+	{
+	    anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,
+							  &pLayerWin);
+	    if (anyMarked)
+	    {
+		(*pScreen->ValidateTree)(pLayerWin->parent, pLayerWin, VTMap);
+		(*pScreen->HandleExposures)(pLayerWin->parent);
+	    }
+	if (anyMarked && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, pLayerWin, VTMap);
+	}
+	WindowsRestructured ();
+    }
+    else
+    {
+	RegionRec   temp;
+
+	pWin->mapped = TRUE;
+	pWin->realized = TRUE;	   /* for roots */
+	pWin->viewable = pWin->drawable.class == InputOutput;
+	/* We SHOULD check for an error value here XXX */
+	(*pScreen->RealizeWindow)(pWin);
+	if (pScreen->ClipNotify)
+	    (*pScreen->ClipNotify) (pWin, 0, 0);
+	if (pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(NullWindow, pWin, VTMap);
+	RegionNull(&temp);
+	RegionCopy(&temp, &pWin->clipList);
+	(*pScreen->WindowExposures) (pWin, &temp, NullRegion);
+	RegionUninit(&temp);
+    }
+
+    return Success;
+}
+
+
+/*****
+ * MapSubwindows
+ *    Performs a MapWindow all unmapped children of the window, in top
+ *    to bottom stacking order.
+ *****/
+
+void
+MapSubwindows(WindowPtr pParent, ClientPtr client)
+{
+    WindowPtr	pWin;
+    WindowPtr	pFirstMapped = NullWindow;
+    ScreenPtr	pScreen;
+    Mask	parentRedirect;
+    Mask	parentNotify;
+    xEvent	event;
+    Bool	anyMarked;
+    WindowPtr		pLayerWin;
+
+    pScreen = pParent->drawable.pScreen;
+    parentRedirect = RedirectSend(pParent);
+    parentNotify = SubSend(pParent);
+    anyMarked = FALSE;
+    for (pWin = pParent->firstChild; pWin; pWin = pWin->nextSib)
+    {
+	if (!pWin->mapped)
+	{
+	    if (parentRedirect && !pWin->overrideRedirect)
+	    {
+		memset(&event, 0, sizeof(xEvent));
+		event.u.u.type = MapRequest;
+		event.u.mapRequest.window = pWin->drawable.id;
+		event.u.mapRequest.parent = pParent->drawable.id;
+    
+		if (MaybeDeliverEventsToClient(pParent, &event, 1,
+		    SubstructureRedirectMask, client) == 1)
+		    continue;
+	    }
+    
+	    pWin->mapped = TRUE;
+	    if (parentNotify || StrSend(pWin))
+	    {
+		memset(&event, 0, sizeof(xEvent));
+		event.u.u.type = MapNotify;
+		event.u.mapNotify.window = pWin->drawable.id;
+		event.u.mapNotify.override = pWin->overrideRedirect;
+		DeliverEvents(pWin, &event, 1, NullWindow);
+	    }
+    
+	    if (!pFirstMapped)
+		pFirstMapped = pWin;
+	    if (pParent->realized)
+	    {
+		RealizeTree(pWin);
+		if (pWin->viewable)
+		{
+		    anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pWin,
+							(WindowPtr *)NULL);
+		}
+	    }
+	}
+    }
+
+    if (pFirstMapped)
+    {
+	pLayerWin = (*pScreen->GetLayerWindow)(pParent);
+	if (pLayerWin->parent != pParent) {
+	    anyMarked |= (*pScreen->MarkOverlappedWindows)(pLayerWin,
+							   pLayerWin,
+							   (WindowPtr *)NULL);
+	    pFirstMapped = pLayerWin;
+	}
+        if (anyMarked)
+        {
+	    (*pScreen->ValidateTree)(pLayerWin->parent, pFirstMapped, VTMap);
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+	}
+        if (anyMarked && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, pFirstMapped,
+					 VTMap);
+        WindowsRestructured ();
+    }
+}
+
+static void
+UnrealizeTree(
+    WindowPtr pWin,
+    Bool fromConfigure)
+{
+    WindowPtr pChild;
+    UnrealizeWindowProcPtr Unrealize;
+    MarkUnrealizedWindowProcPtr MarkUnrealizedWindow;
+
+    Unrealize = pWin->drawable.pScreen->UnrealizeWindow;
+    MarkUnrealizedWindow = pWin->drawable.pScreen->MarkUnrealizedWindow;
+    pChild = pWin;
+    while (1)
+    {
+	if (pChild->realized)
+	{
+	    pChild->realized = FALSE;
+	    pChild->visibility = VisibilityNotViewable;
+#ifdef PANORAMIX
+	    if(!noPanoramiXExtension && !pChild->drawable.pScreen->myNum) {
+		PanoramiXRes *win;
+		int rc = dixLookupResourceByType((pointer *)&win,
+					     pChild->drawable.id, XRT_WINDOW,
+					     serverClient, DixWriteAccess);
+		if (rc == Success)
+		   win->u.win.visibility = VisibilityNotViewable;
+	    } 
+#endif
+	    (* Unrealize)(pChild);
+	    if (MapUnmapEventsEnabled(pWin))
+		DeleteWindowFromAnyEvents(pChild, FALSE);
+	    if (pChild->viewable)
+	    {
+		pChild->viewable = FALSE;
+		(* MarkUnrealizedWindow)(pChild, pWin, fromConfigure);
+		pChild->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+	    }
+	    if (pChild->firstChild)
+	    {
+		pChild = pChild->firstChild;
+		continue;
+	    }
+	}
+	while (!pChild->nextSib && (pChild != pWin))
+	    pChild = pChild->parent;
+	if (pChild == pWin)
+	    return;
+	pChild = pChild->nextSib;
+    }
+}
+
+/*****
+ * UnmapWindow
+ *    If the window is already unmapped, this request has no effect.
+ *    Otherwise, the window is unmapped and an UnMapNotify event is
+ *    generated.  Cannot unmap a root window.
+ *****/
+
+int
+UnmapWindow(WindowPtr pWin, Bool fromConfigure)
+{
+    WindowPtr pParent;
+    xEvent event;
+    Bool wasRealized = (Bool)pWin->realized;
+    Bool wasViewable = (Bool)pWin->viewable;
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+    WindowPtr pLayerWin = pWin;
+
+    if ((!pWin->mapped) || (!(pParent = pWin->parent)))
+	return Success;
+    if (SubStrSend(pWin, pParent) && MapUnmapEventsEnabled(pWin))
+    {
+	memset(&event, 0, sizeof(xEvent));
+	event.u.u.type = UnmapNotify;
+	event.u.unmapNotify.window = pWin->drawable.id;
+	event.u.unmapNotify.fromConfigure = fromConfigure;
+	DeliverEvents(pWin, &event, 1, NullWindow);
+    }
+    if (wasViewable && !fromConfigure)
+    {
+	pWin->valdata = UnmapValData;
+	(*pScreen->MarkOverlappedWindows)(pWin, pWin->nextSib, &pLayerWin);
+	(*pScreen->MarkWindow)(pLayerWin->parent);
+    }
+    pWin->mapped = FALSE;
+    if (wasRealized)
+	UnrealizeTree(pWin, fromConfigure);
+    if (wasViewable)
+    {
+	if (!fromConfigure)
+	{
+	    (*pScreen->ValidateTree)(pLayerWin->parent, pWin, VTUnmap);
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+	}
+	if (!fromConfigure && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, pWin, VTUnmap);
+    }
+    if (wasRealized && !fromConfigure)
+	WindowsRestructured ();
+    return Success;
+}
+
+/*****
+ * UnmapSubwindows
+ *    Performs an UnmapWindow request with the specified mode on all mapped
+ *    children of the window, in bottom to top stacking order.
+ *****/
+
+void
+UnmapSubwindows(WindowPtr pWin)
+{
+    WindowPtr pChild, pHead;
+    xEvent event;
+    Bool wasRealized = (Bool)pWin->realized;
+    Bool wasViewable = (Bool)pWin->viewable;
+    Bool anyMarked = FALSE;
+    Mask parentNotify;
+    WindowPtr pLayerWin = NULL;
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+
+    if (!pWin->firstChild)
+	return;
+    parentNotify = SubSend(pWin);
+    pHead = RealChildHead(pWin);
+
+    if (wasViewable)
+	pLayerWin = (*pScreen->GetLayerWindow)(pWin);
+
+    for (pChild = pWin->lastChild; pChild != pHead; pChild = pChild->prevSib)
+    {
+	if (pChild->mapped)
+	{
+	    if (parentNotify || StrSend(pChild))
+	    {
+		event.u.u.type = UnmapNotify;
+		event.u.unmapNotify.window = pChild->drawable.id;
+		event.u.unmapNotify.fromConfigure = xFalse;
+		DeliverEvents(pChild, &event, 1, NullWindow);
+	    }
+	    if (pChild->viewable)
+	    {
+		pChild->valdata = UnmapValData;
+		anyMarked = TRUE;
+	    }
+	    pChild->mapped = FALSE;
+	    if (pChild->realized)
+		UnrealizeTree(pChild, FALSE);
+	    if (wasViewable)
+	    {
+	    }
+	}
+    }
+    if (wasViewable)
+    {
+	if (anyMarked)
+	{
+	    if (pLayerWin->parent == pWin)
+		(*pScreen->MarkWindow)(pWin);
+	    else
+	    {
+		WindowPtr ptmp;
+                (*pScreen->MarkOverlappedWindows)(pWin, pLayerWin,
+						  (WindowPtr *)NULL);
+		(*pScreen->MarkWindow)(pLayerWin->parent);
+		
+		/* Windows between pWin and pLayerWin may not have been marked */
+		ptmp = pWin;
+ 
+		while (ptmp != pLayerWin->parent)
+		{
+		    (*pScreen->MarkWindow)(ptmp);
+		    ptmp = ptmp->parent;
+		}
+                pHead = pWin->firstChild;
+	    }
+	    (*pScreen->ValidateTree)(pLayerWin->parent, pHead, VTUnmap);
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+	}
+	if (anyMarked && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, pHead, VTUnmap);
+    }
+    if (wasRealized)
+	WindowsRestructured ();
+}
+
+
+void
+HandleSaveSet(ClientPtr client)
+{
+    WindowPtr pParent, pWin;
+    int j;
+
+    for (j=0; j<client->numSaved; j++)
+    {
+	pWin = SaveSetWindow(client->saveSet[j]);
+#ifdef XFIXES
+	if (SaveSetToRoot(client->saveSet[j]))
+	    pParent = pWin->drawable.pScreen->root;
+	else
+#endif
+	{
+	    pParent = pWin->parent;
+	    while (pParent && (wClient (pParent) == client))
+		pParent = pParent->parent;
+	}
+	if (pParent)
+	{
+	    if (pParent != pWin->parent)
+	    {
+#ifdef XFIXES
+		/* unmap first so that ReparentWindow doesn't remap */
+		if (!SaveSetShouldMap (client->saveSet[j]))
+		    UnmapWindow(pWin, FALSE);
+#endif
+		ReparentWindow(pWin, pParent,
+			       pWin->drawable.x - wBorderWidth (pWin) - pParent->drawable.x,
+			       pWin->drawable.y - wBorderWidth (pWin) - pParent->drawable.y,
+			       client);
+		if(!pWin->realized && pWin->mapped)
+		    pWin->mapped = FALSE;
+	    }
+#ifdef XFIXES
+	    if (SaveSetShouldMap (client->saveSet[j]))
+#endif
+		MapWindow(pWin, client);
+	}
+    }
+    free(client->saveSet);
+    client->numSaved = 0;
+    client->saveSet = (SaveSetElt *)NULL;
+}
+
+/**
+ *
+ * \param x,y  in root
+ */
+Bool
+PointInWindowIsVisible(WindowPtr pWin, int x, int y)
+{
+    BoxRec box;
+
+    if (!pWin->realized)
+	return FALSE;
+    if (RegionContainsPoint(&pWin->borderClip,
+						  x, y, &box)
+	&& (!wInputShape(pWin) ||
+	    RegionContainsPoint(wInputShape(pWin),
+				x - pWin->drawable.x,
+				y - pWin->drawable.y, &box)))
+	return TRUE;
+    return FALSE;
+}
+
+
+RegionPtr
+NotClippedByChildren(WindowPtr pWin)
+{
+    RegionPtr pReg = RegionCreate(NullBox, 1);
+    if (pWin->parent ||
+	screenIsSaved != SCREEN_SAVER_ON ||
+	!HasSaverWindow (pWin->drawable.pScreen))
+    {
+	RegionIntersect(pReg, &pWin->borderClip, &pWin->winSize);
+    }
+    return pReg;
+}
+
+void
+SendVisibilityNotify(WindowPtr pWin)
+{
+    xEvent event;
+    unsigned int visibility = pWin->visibility;
+
+    if (!MapUnmapEventsEnabled(pWin))
+        return;
+#ifdef PANORAMIX
+    /* This is not quite correct yet, but it's close */
+    if(!noPanoramiXExtension) {
+	PanoramiXRes *win;
+	WindowPtr pWin2;
+	int rc, i, Scrnum;
+
+	Scrnum = pWin->drawable.pScreen->myNum;
+	
+	win = PanoramiXFindIDByScrnum(XRT_WINDOW, pWin->drawable.id, Scrnum);
+
+	if(!win || (win->u.win.visibility == visibility))
+	    return;
+
+	switch(visibility) {
+	case VisibilityUnobscured:
+	    FOR_NSCREENS(i) {
+		if(i == Scrnum) continue;
+
+		rc = dixLookupWindow(&pWin2, win->info[i].id, serverClient,
+				     DixWriteAccess);
+
+		if (rc == Success) {
+		    if(pWin2->visibility == VisibilityPartiallyObscured)
+		   	return;
+
+		    if(!i) pWin = pWin2;
+		}
+	    }
+	    break;
+	case VisibilityPartiallyObscured:
+	    if(Scrnum) {
+		rc = dixLookupWindow(&pWin2, win->info[0].id, serverClient,
+				     DixWriteAccess);
+		if (rc == Success) pWin = pWin2;
+	    }
+	    break;
+	case VisibilityFullyObscured:
+	    FOR_NSCREENS(i) {
+		if(i == Scrnum) continue;
+
+		rc = dixLookupWindow(&pWin2, win->info[i].id, serverClient,
+				     DixWriteAccess);
+		
+		if (rc == Success) {
+		    if(pWin2->visibility != VisibilityFullyObscured)
+		    	return;
+
+		    if(!i) pWin = pWin2;
+		}
+	    }
+	    break;
+	}
+	
+	win->u.win.visibility = visibility;
+    }
+#endif
+
+    memset(&event, 0, sizeof(xEvent));
+    event.u.u.type = VisibilityNotify;
+    event.u.visibility.window = pWin->drawable.id;
+    event.u.visibility.state = visibility;
+    DeliverEvents(pWin, &event, 1, NullWindow);
+}
+
+#define RANDOM_WIDTH 32
+int
+dixSaveScreens(ClientPtr client, int on, int mode)
+{
+    int rc, i, what, type;
+
+    if (on == SCREEN_SAVER_FORCER)
+    {
+	if (mode == ScreenSaverReset)
+	    what = SCREEN_SAVER_OFF;
+	else
+	    what = SCREEN_SAVER_ON;
+	type = what;
+    }
+    else
+    {
+	what = on;
+	type = what;
+	if (what == screenIsSaved)
+	    type = SCREEN_SAVER_CYCLE;
+    }
+
+    for (i = 0; i < screenInfo.numScreens; i++) {
+	rc = XaceHook(XACE_SCREENSAVER_ACCESS, client, screenInfo.screens[i],
+		      DixShowAccess | DixHideAccess);
+	if (rc != Success)
+	    return rc;
+    }
+    for (i = 0; i < screenInfo.numScreens; i++)
+    {
+	ScreenPtr pScreen = screenInfo.screens[i];
+	if (on == SCREEN_SAVER_FORCER)
+	   (* pScreen->SaveScreen) (pScreen, on);
+	if (pScreen->screensaver.ExternalScreenSaver)
+	{
+	    if ((*pScreen->screensaver.ExternalScreenSaver)
+		(pScreen, type, on == SCREEN_SAVER_FORCER))
+		continue;
+	}
+	if (type == screenIsSaved)
+	    continue;
+	switch (type) {
+	case SCREEN_SAVER_OFF:
+	    if (pScreen->screensaver.blanked == SCREEN_IS_BLANKED)
+	    {
+	       (* pScreen->SaveScreen) (pScreen, what);
+	    }
+	    else if (HasSaverWindow (pScreen))
+	    {
+		pScreen->screensaver.pWindow = NullWindow;
+		FreeResource(pScreen->screensaver.wid, RT_NONE);
+	    }
+	    break;
+	case SCREEN_SAVER_CYCLE:
+	    if (pScreen->screensaver.blanked == SCREEN_IS_TILED)
+	    {
+		WindowPtr pWin = pScreen->screensaver.pWindow;
+		/* make it look like screen saver is off, so that
+		 * NotClippedByChildren will compute a clip list
+		 * for the root window, so miPaintWindow works
+		 */
+		screenIsSaved = SCREEN_SAVER_OFF;
+		(*pWin->drawable.pScreen->MoveWindow)(pWin,
+			   (short)(-(rand() % RANDOM_WIDTH)),
+			   (short)(-(rand() % RANDOM_WIDTH)),
+			   pWin->nextSib, VTMove);
+		screenIsSaved = SCREEN_SAVER_ON;
+	    }
+	    /*
+	     * Call the DDX saver in case it wants to do something
+	     * at cycle time
+	     */
+	    else if (pScreen->screensaver.blanked == SCREEN_IS_BLANKED)
+	    {
+		(* pScreen->SaveScreen) (pScreen, type);
+	    }
+	    break;
+	case SCREEN_SAVER_ON:
+	    if (ScreenSaverBlanking != DontPreferBlanking)
+	    {
+		if ((* pScreen->SaveScreen) (pScreen, what))
+		{
+		   pScreen->screensaver.blanked = SCREEN_IS_BLANKED;
+		   continue;
+		}
+		if ((ScreenSaverAllowExposures != DontAllowExposures) &&
+		    TileScreenSaver(pScreen, SCREEN_IS_BLACK))
+		{
+		    pScreen->screensaver.blanked = SCREEN_IS_BLACK;
+		    continue;
+		}
+	    }
+	    if ((ScreenSaverAllowExposures != DontAllowExposures) &&
+		TileScreenSaver(pScreen, SCREEN_IS_TILED))
+	    {
+		pScreen->screensaver.blanked = SCREEN_IS_TILED;
+	    }
+	    else
+		pScreen->screensaver.blanked = SCREEN_ISNT_SAVED;
+	    break;
+	}
+    }
+    screenIsSaved = what;
+    if (mode == ScreenSaverReset) {
+	if (on == SCREEN_SAVER_FORCER) {
+	    UpdateCurrentTimeIf();
+	    lastDeviceEventTime = currentTime;
+	}
+	SetScreenSaverTimer();
+    }
+    return Success;
+}
+
+int
+SaveScreens(int on, int mode)
+{
+    return dixSaveScreens(serverClient, on, mode);
+}
+
+static Bool
+TileScreenSaver(ScreenPtr pScreen, int kind)
+{
+    int j;
+    int result;
+    XID attributes[3];
+    Mask mask;
+    WindowPtr pWin;		
+    CursorMetricRec cm;
+    unsigned char *srcbits, *mskbits;
+    CursorPtr cursor;
+    XID	cursorID = 0;
+    int	attri;
+
+    mask = 0;
+    attri = 0;
+    switch (kind) {
+    case SCREEN_IS_TILED:
+	switch (pScreen->root->backgroundState) {
+	case BackgroundPixel:
+	    attributes[attri++] = pScreen->root->background.pixel;
+	    mask |= CWBackPixel;
+	    break;
+	case BackgroundPixmap:
+	    attributes[attri++] = None;
+	    mask |= CWBackPixmap;
+	    break;
+	default:
+	    break;
+	}
+	break;
+    case SCREEN_IS_BLACK:
+	attributes[attri++] = pScreen->root->drawable.pScreen->blackPixel;
+	mask |= CWBackPixel;
+	break;
+    }
+    mask |= CWOverrideRedirect;
+    attributes[attri++] = xTrue;
+
+    /*
+     * create a blank cursor
+     */
+
+    cm.width=16;
+    cm.height=16;
+    cm.xhot=8;
+    cm.yhot=8;
+    srcbits = malloc( BitmapBytePad(32)*16);
+    mskbits = malloc( BitmapBytePad(32)*16);
+    if (!srcbits || !mskbits)
+    {
+	free(srcbits);
+	free(mskbits);
+	cursor = 0;
+    }
+    else
+    {
+	for (j=0; j<BitmapBytePad(32)*16; j++)
+	    srcbits[j] = mskbits[j] = 0x0;
+	result = AllocARGBCursor(srcbits, mskbits, NULL, &cm, 0, 0, 0, 0, 0, 0,
+				 &cursor, serverClient, (XID)0);
+	if (cursor)
+	{
+	    cursorID = FakeClientID(0);
+	    if (AddResource (cursorID, RT_CURSOR, (pointer) cursor))
+	    {
+		attributes[attri] = cursorID;
+		mask |= CWCursor;
+	    }
+	    else
+		cursor = 0;
+	}
+	else
+	{
+	    free(srcbits);
+	    free(mskbits);
+	}
+    }
+
+    pWin = pScreen->screensaver.pWindow =
+	 CreateWindow(pScreen->screensaver.wid,
+	      pScreen->root,
+	      -RANDOM_WIDTH, -RANDOM_WIDTH,
+	      (unsigned short)pScreen->width + RANDOM_WIDTH,
+	      (unsigned short)pScreen->height + RANDOM_WIDTH,
+	      0, InputOutput, mask, attributes, 0, serverClient,
+	      wVisual (pScreen->root), &result);
+
+    if (cursor)
+	FreeResource (cursorID, RT_NONE);
+
+    if (!pWin)
+	return FALSE;
+
+    if (!AddResource(pWin->drawable.id, RT_WINDOW,
+		     (pointer)pScreen->screensaver.pWindow))
+	return FALSE;
+
+    if (mask & CWBackPixmap)
+    {
+	MakeRootTile (pWin);
+	(*pWin->drawable.pScreen->ChangeWindowAttributes)(pWin, CWBackPixmap);
+    }
+    MapWindow(pWin, serverClient);
+    return TRUE;
+}
+
+/*
+ * FindWindowWithOptional
+ *
+ * search ancestors of the given window for an entry containing
+ * a WindowOpt structure.  Assumptions:	 some parent will
+ * contain the structure.
+ */
+
+WindowPtr
+FindWindowWithOptional (WindowPtr w)
+{
+    do
+	w = w->parent;
+    while (!w->optional);
+    return w;
+}
+
+/*
+ * CheckWindowOptionalNeed
+ *
+ * check each optional entry in the given window to see if
+ * the value is satisfied by the default rules.	 If so,
+ * release the optional record
+ */
+
+void
+CheckWindowOptionalNeed (WindowPtr w)
+{
+    WindowOptPtr optional;
+    WindowOptPtr parentOptional;
+
+    if (!w->parent || !w->optional)
+	return;
+    optional = w->optional;
+    if (optional->dontPropagateMask != DontPropagateMasks[w->dontPropagate])
+	return;
+    if (optional->otherEventMasks != 0)
+	return;
+    if (optional->otherClients != NULL)
+	return;
+    if (optional->passiveGrabs != NULL)
+	return;
+    if (optional->userProps != NULL)
+	return;
+    if (optional->backingBitPlanes != ~0L)
+	return;
+    if (optional->backingPixel != 0)
+	return;
+    if (optional->boundingShape != NULL)
+	return;
+    if (optional->clipShape != NULL)
+	return;
+    if (optional->inputShape != NULL)
+	return;
+    if (optional->inputMasks != NULL)
+	return;
+    if (optional->deviceCursors != NULL)
+    {
+        DevCursNodePtr pNode = optional->deviceCursors;
+        while(pNode)
+        {
+            if (pNode->cursor != None)
+                return;
+            pNode = pNode->next;
+        }
+    }
+
+    parentOptional = FindWindowWithOptional(w)->optional;
+    if (optional->visual != parentOptional->visual)
+	return;
+    if (optional->cursor != None &&
+	(optional->cursor != parentOptional->cursor ||
+	 w->parent->cursorIsNone))
+	return;
+    if (optional->colormap != parentOptional->colormap)
+	return;
+    DisposeWindowOptional (w);
+}
+
+/*
+ * MakeWindowOptional
+ *
+ * create an optional record and initialize it with the default
+ * values.
+ */
+
+Bool
+MakeWindowOptional (WindowPtr pWin)
+{
+    WindowOptPtr optional;
+    WindowOptPtr parentOptional;
+
+    if (pWin->optional)
+	return TRUE;
+    optional = malloc(sizeof (WindowOptRec));
+    if (!optional)
+	return FALSE;
+    optional->dontPropagateMask = DontPropagateMasks[pWin->dontPropagate];
+    optional->otherEventMasks = 0;
+    optional->otherClients = NULL;
+    optional->passiveGrabs = NULL;
+    optional->userProps = NULL;
+    optional->backingBitPlanes = ~0L;
+    optional->backingPixel = 0;
+    optional->boundingShape = NULL;
+    optional->clipShape = NULL;
+    optional->inputShape = NULL;
+    optional->inputMasks = NULL;
+    optional->deviceCursors = NULL;
+
+    parentOptional = FindWindowWithOptional(pWin)->optional;
+    optional->visual = parentOptional->visual;
+    if (!pWin->cursorIsNone)
+    {
+	optional->cursor = parentOptional->cursor;
+	optional->cursor->refcnt++;
+    }
+    else
+    {
+	optional->cursor = None;
+    }
+    optional->colormap = parentOptional->colormap;
+    pWin->optional = optional;
+    return TRUE;
+}
+
+/*
+ * Changes the cursor struct for the given device and the given window.
+ * A cursor that does not have a device cursor set will use whatever the
+ * standard cursor is for the window. If all devices have a cursor set,
+ * changing the window cursor (e.g. using XDefineCursor()) will not have any
+ * visible effect. Only when one of the device cursors is set to None again,
+ * this device's cursor will display the changed standard cursor.
+ * 
+ * CursorIsNone of the window struct is NOT modified if you set a device
+ * cursor. 
+ *
+ * Assumption: If there is a node for a device in the list, the device has a
+ * cursor. If the cursor is set to None, it is inherited by the parent.
+ */
+int
+ChangeWindowDeviceCursor(WindowPtr pWin, 
+                         DeviceIntPtr pDev, 
+                         CursorPtr pCursor) 
+{
+    DevCursNodePtr pNode, pPrev;
+    CursorPtr pOldCursor = NULL;
+    ScreenPtr pScreen;
+    WindowPtr pChild;
+
+    if (!pWin->optional && !MakeWindowOptional(pWin))
+        return BadAlloc;
+
+    /* 1) Check if window has device cursor set
+     *  Yes: 1.1) swap cursor with given cursor if parent does not have same
+     *            cursor, free old cursor
+     *       1.2) free old cursor, use parent cursor
+     *  No: 1.1) add node to beginning of list.
+     *      1.2) add cursor to node if parent does not have same cursor
+     *      1.3) use parent cursor if parent does not have same cursor
+     *  2) Patch up children if child has a devcursor
+     *  2.1) if child has cursor None, it inherited from parent, set to old
+     *  cursor
+     *  2.2) if child has same cursor as new cursor, remove and set to None
+     */
+
+    pScreen = pWin->drawable.pScreen;
+
+    if (WindowSeekDeviceCursor(pWin, pDev, &pNode, &pPrev))
+    {
+        /* has device cursor */
+
+        if (pNode->cursor == pCursor)
+            return Success;
+
+        pOldCursor = pNode->cursor;
+
+        if (!pCursor) /* remove from list */
+        {
+                if(pPrev)
+                    pPrev->next = pNode->next;
+                else
+                    /* first item in list */
+                    pWin->optional->deviceCursors = pNode->next;
+
+            free(pNode);
+            goto out;
+        }
+
+    } else
+    {
+        /* no device cursor yet */
+        DevCursNodePtr pNewNode;
+
+        if (!pCursor)
+            return Success;
+
+        pNewNode = malloc(sizeof(DevCursNodeRec));
+        pNewNode->dev = pDev;
+        pNewNode->next = pWin->optional->deviceCursors;
+        pWin->optional->deviceCursors = pNewNode;
+        pNode = pNewNode;
+
+    }
+
+    if (pCursor && WindowParentHasDeviceCursor(pWin, pDev, pCursor))
+        pNode->cursor = None;
+    else
+    {
+        pNode->cursor = pCursor;
+        pCursor->refcnt++;
+    }
+
+    pNode = pPrev = NULL;
+    /* fix up children */
+    for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
+    {
+        if (WindowSeekDeviceCursor(pChild, pDev, &pNode, &pPrev))
+        {
+            if (pNode->cursor == None) /* inherited from parent */
+            {
+                pNode->cursor = pOldCursor;
+                pOldCursor->refcnt++;
+            } else if (pNode->cursor == pCursor)
+            {
+                pNode->cursor = None;
+                FreeCursor(pCursor, (Cursor)0); /* fix up refcnt */
+            }
+        }
+    }
+
+out:
+    if (pWin->realized)
+        WindowHasNewCursor(pWin);
+
+    if (pOldCursor)
+        FreeCursor(pOldCursor, (Cursor)0);
+
+    /* FIXME: We SHOULD check for an error value here XXX  
+       (comment taken from ChangeWindowAttributes) */
+    (*pScreen->ChangeWindowAttributes)(pWin, CWCursor);
+
+    return Success;
+}
+
+/* Get device cursor for given device or None if none is set */
+CursorPtr
+WindowGetDeviceCursor(WindowPtr pWin, DeviceIntPtr pDev)
+{
+    DevCursorList pList;
+
+    if (!pWin->optional || !pWin->optional->deviceCursors)
+        return NULL;
+
+    pList = pWin->optional->deviceCursors;
+
+    while(pList)
+    {
+        if (pList->dev == pDev)
+        {
+            if (pList->cursor == None) /* inherited from parent */
+                return WindowGetDeviceCursor(pWin->parent, pDev);
+            else
+                return pList->cursor;
+        }
+        pList = pList->next;
+    }
+    return NULL;
+}
+
+/* Searches for a DevCursorNode for the given window and device. If one is
+ * found, return True and set pNode and pPrev to the node and to the node
+ * before the node respectively. Otherwise return False.
+ * If the device is the first in list, pPrev is set to NULL.
+ */
+static Bool 
+WindowSeekDeviceCursor(WindowPtr pWin, 
+                       DeviceIntPtr pDev, 
+                       DevCursNodePtr* pNode, 
+                       DevCursNodePtr* pPrev)
+{
+    DevCursorList pList;
+
+    if (!pWin->optional)
+        return FALSE;
+
+    pList = pWin->optional->deviceCursors;
+
+    if (pList && pList->dev == pDev)
+    {
+        *pNode = pList;
+        *pPrev = NULL;
+        return TRUE;
+    }
+
+    while(pList)
+    {
+        if (pList->next)
+        {
+            if (pList->next->dev == pDev)
+            {
+                *pNode = pList->next;
+                *pPrev = pList;
+                return TRUE;
+            }
+        }
+        pList = pList->next;
+    }
+    return FALSE;
+}
+
+/* Return True if a parent has the same device cursor set or False if
+ * otherwise 
+ */ 
+static Bool 
+WindowParentHasDeviceCursor(WindowPtr pWin, 
+                            DeviceIntPtr pDev, 
+                            CursorPtr pCursor)
+{
+    WindowPtr pParent;
+    DevCursNodePtr pParentNode, pParentPrev;
+
+    pParent = pWin->parent;
+    while(pParent)
+    {
+        if (WindowSeekDeviceCursor(pParent, pDev, 
+                    &pParentNode, &pParentPrev))
+        {
+            /* if there is a node in the list, the win has a dev cursor */
+            if (!pParentNode->cursor) /* inherited. */
+                pParent = pParent->parent;
+            else if (pParentNode->cursor == pCursor) /* inherit */
+                return TRUE;
+            else  /* different cursor */
+                return FALSE;
+        } 
+        else 
+            /* parent does not have a device cursor for our device */
+            return FALSE;
+    }
+    return FALSE;
+}