Merge branch 'nxagent'

1 files changed, 1205 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/nxagent/NXmiwindow.c.NX.original b/nx-X11/programs/Xserver/hw/nxagent/NXmiwindow.c.NX.original
new file mode 100644
index 000000000..ea2e7df28
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/nxagent/NXmiwindow.c.NX.original
@@ -0,0 +1,1205 @@
+#ifdef NXAGENT_UPGRADE
+
+#include "X/NXmiwindow.c"
+
+#else
+
+/* $XFree86: xc/programs/Xserver/mi/miwindow.c,v 1.7 2001/12/14 20:00:28 dawes Exp $ */
+/***********************************************************
+
+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.
+
+******************************************************************/
+/* $Xorg: miwindow.c,v 1.4 2001/02/09 02:05:22 xorgcvs Exp $ */
+#include "X.h"
+#include "miscstruct.h"
+#include "region.h"
+#include "mi.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "mivalidate.h"
+
+void 
+miClearToBackground(pWin, x, y, w, h, generateExposures)
+    WindowPtr pWin;
+    int x,y;
+    int w,h;
+    Bool generateExposures;
+{
+    BoxRec box;
+    RegionRec	reg;
+    RegionPtr pBSReg = NullRegion;
+    ScreenPtr	pScreen;
+    BoxPtr  extents;
+    int	    x1, y1, x2, y2;
+
+    /* compute everything using ints to avoid overflow */
+
+    x1 = pWin->drawable.x + x;
+    y1 = pWin->drawable.y + y;
+    if (w)
+        x2 = x1 + (int) w;
+    else
+        x2 = x1 + (int) pWin->drawable.width - (int) x;
+    if (h)
+        y2 = y1 + h;	
+    else
+        y2 = y1 + (int) pWin->drawable.height - (int) y;
+
+    extents = &pWin->clipList.extents;
+    
+    /* clip the resulting rectangle to the window clipList extents.  This
+     * makes sure that the result will fit in a box, given that the
+     * screen is < 32768 on a side.
+     */
+
+    if (x1 < extents->x1)
+	x1 = extents->x1;
+    if (x2 > extents->x2)
+	x2 = extents->x2;
+    if (y1 < extents->y1)
+	y1 = extents->y1;
+    if (y2 > extents->y2)
+	y2 = extents->y2;
+
+    if (x2 <= x1 || y2 <= y1)
+    {
+	x2 = x1 = 0;
+	y2 = y1 = 0;
+    }
+
+    box.x1 = x1;
+    box.x2 = x2;
+    box.y1 = y1;
+    box.y2 = y2;
+
+    pScreen = pWin->drawable.pScreen;
+    REGION_INIT(pScreen, &reg, &box, 1);
+    if (pWin->backStorage)
+    {
+	/*
+	 * If the window has backing-store on, call through the
+	 * ClearToBackground vector to handle the special semantics
+	 * (i.e. things backing store is to be cleared out and
+	 * an Expose event is to be generated for those areas in backing
+	 * store if generateExposures is TRUE).
+	 */
+	pBSReg = (* pScreen->ClearBackingStore)(pWin, x, y, w, h,
+						 generateExposures);
+    }
+
+    REGION_INTERSECT(pScreen, &reg, &reg, &pWin->clipList);
+    if (generateExposures)
+	(*pScreen->WindowExposures)(pWin, &reg, pBSReg);
+    else if (pWin->backgroundState != None)
+        (*pScreen->PaintWindowBackground)(pWin, &reg, PW_BACKGROUND);
+    REGION_UNINIT(pScreen, &reg);
+    if (pBSReg)
+	REGION_DESTROY(pScreen, pBSReg);
+}
+
+/*
+ * For SaveUnders using backing-store. The idea is that when a window is mapped
+ * with saveUnder set TRUE, any windows it obscures will have its backing
+ * store turned on setting the DIXsaveUnder bit,
+ * The backing-store code must be written to allow for this
+ */
+
+/*-
+ *-----------------------------------------------------------------------
+ * miCheckSubSaveUnder --
+ *	Check all the inferiors of a window for coverage by saveUnder
+ *	windows. Called from ChangeSaveUnder and CheckSaveUnder.
+ *	This code is very inefficient.
+ *
+ * Results:
+ *	TRUE if any windows need to have backing-store removed.
+ *
+ * Side Effects:
+ *	Windows may have backing-store turned on or off.
+ *
+ *-----------------------------------------------------------------------
+ */
+static Bool
+miCheckSubSaveUnder(
+    register WindowPtr	pParent,	/* Parent to check */
+    WindowPtr		pFirst,		/* first reconfigured window */
+    RegionPtr		pRegion)	/* Initial area obscured by saveUnder */
+{
+    register WindowPtr	pChild;		/* Current child */
+    register ScreenPtr	pScreen;	/* Screen to use */
+    RegionRec		SubRegion;	/* Area of children obscured */
+    Bool		res = FALSE;	/* result */
+    Bool		subInited=FALSE;/* SubRegion initialized */
+
+    pScreen = pParent->drawable.pScreen;
+    if ( (pChild = pParent->firstChild) )
+    {
+	/*
+	 * build region above first changed window
+	 */
+
+	for (; pChild != pFirst; pChild = pChild->nextSib)
+	    if (pChild->viewable && pChild->saveUnder)
+		REGION_UNION(pScreen, pRegion, pRegion, &pChild->borderSize);
+	
+	/*
+	 * check region below and including first changed window
+	 */
+
+	for (; pChild; pChild = pChild->nextSib)
+	{
+	    if (pChild->viewable)
+	    {
+		/*
+		 * don't save under nephew/niece windows;
+		 * use a separate region
+		 */
+
+		if (pChild->firstChild)
+		{
+		    if (!subInited)
+		    {
+			REGION_INIT(pScreen, &SubRegion, NullBox, 0);
+			subInited = TRUE;
+		    }
+		    REGION_COPY(pScreen, &SubRegion, pRegion);
+		    res |= miCheckSubSaveUnder(pChild, pChild->firstChild,
+					     &SubRegion);
+		}
+		else
+		{
+		    res |= miCheckSubSaveUnder(pChild, pChild->firstChild,
+					     pRegion);
+		}
+
+		if (pChild->saveUnder)
+		    REGION_UNION(pScreen, pRegion, pRegion, &pChild->borderSize);
+	    }
+	}
+
+	if (subInited)
+	    REGION_UNINIT(pScreen, &SubRegion);
+    }
+
+    /*
+     * Check the state of this window.	DIX save unders are
+     * enabled for viewable windows with some client expressing
+     * exposure interest and which intersect the save under region
+     */
+
+    if (pParent->viewable && 
+	((pParent->eventMask | wOtherEventMasks(pParent)) & ExposureMask) &&
+	REGION_NOTEMPTY(pScreen, &pParent->borderSize) &&
+	RECT_IN_REGION(pScreen, pRegion, REGION_EXTENTS(pScreen, 
+					&pParent->borderSize)) != rgnOUT)
+    {
+	if (!pParent->DIXsaveUnder)
+	{
+	    pParent->DIXsaveUnder = TRUE;
+	    (*pScreen->ChangeWindowAttributes) (pParent, CWBackingStore);
+	}
+    }
+    else
+    {
+	if (pParent->DIXsaveUnder)
+	{
+	    res = TRUE;
+	    pParent->DIXsaveUnder = FALSE;
+	}
+    }
+    return res;
+}
+
+
+/*-
+ *-----------------------------------------------------------------------
+ * miChangeSaveUnder --
+ *	Change the save-under state of a tree of windows. Called when
+ *	a window with saveUnder TRUE is mapped/unmapped/reconfigured.
+ *	
+ * Results:
+ *	TRUE if any windows need to have backing-store removed (which
+ *	means that PostChangeSaveUnder needs to be called later to 
+ *	finish the job).
+ *
+ * Side Effects:
+ *	Windows may have backing-store turned on or off.
+ *
+ *-----------------------------------------------------------------------
+ */
+Bool
+miChangeSaveUnder(pWin, first)
+    register WindowPtr	pWin;
+    WindowPtr		first;		/* First window to check.
+					 * Used when pWin was restacked */
+{
+    RegionRec	rgn;	/* Area obscured by saveUnder windows */
+    register ScreenPtr pScreen;
+    Bool	res;
+
+    if (!deltaSaveUndersViewable && !numSaveUndersViewable)
+	return FALSE;
+    numSaveUndersViewable += deltaSaveUndersViewable;
+    deltaSaveUndersViewable = 0;
+    pScreen = pWin->drawable.pScreen;
+    REGION_INIT(pScreen, &rgn, NullBox, 1);
+    res = miCheckSubSaveUnder (pWin->parent,
+			       pWin->saveUnder ? first : pWin->nextSib,
+			       &rgn);
+    REGION_UNINIT(pScreen, &rgn);
+    return res;
+}
+
+/*-
+ *-----------------------------------------------------------------------
+ * miPostChangeSaveUnder --
+ *	Actually turn backing-store off for those windows that no longer
+ *	need to have it on.
+ *
+ * Results:
+ *	None.
+ *
+ * Side Effects:
+ *	Backing-store and SAVE_UNDER_CHANGE_BIT are turned off for those
+ *	windows affected.
+ *
+ *-----------------------------------------------------------------------
+ */
+void
+miPostChangeSaveUnder(pWin, pFirst)
+    WindowPtr		pWin;
+    WindowPtr		pFirst;
+{
+    register WindowPtr pParent, pChild;
+    ChangeWindowAttributesProcPtr ChangeWindowAttributes;
+
+    if (!(pParent = pWin->parent))
+	return;
+    ChangeWindowAttributes = pParent->drawable.pScreen->ChangeWindowAttributes;
+    if (!pParent->DIXsaveUnder &&
+	(pParent->backingStore == NotUseful) && pParent->backStorage)
+	(*ChangeWindowAttributes)(pParent, CWBackingStore);
+    if (!(pChild = pFirst))
+	return;
+    while (1)
+    {
+	if (!pChild->DIXsaveUnder &&
+	    (pChild->backingStore == NotUseful) && pChild->backStorage)
+	    (*ChangeWindowAttributes)(pChild, CWBackingStore);
+	if (pChild->firstChild)
+	{
+	    pChild = pChild->firstChild;
+	    continue;
+	}
+	while (!pChild->nextSib)
+	{
+	    pChild = pChild->parent;
+	    if (pChild == pParent)
+		return;
+	}
+	pChild = pChild->nextSib;
+    }
+}
+
+void
+miMarkWindow(pWin)
+    register WindowPtr pWin;
+{
+    register ValidatePtr val;
+
+    if (pWin->valdata)
+	return;
+    val = (ValidatePtr)xnfalloc(sizeof(ValidateRec));
+    val->before.oldAbsCorner.x = pWin->drawable.x;
+    val->before.oldAbsCorner.y = pWin->drawable.y;
+    val->before.borderVisible = NullRegion;
+    val->before.resized = FALSE;
+    pWin->valdata = val;
+}
+
+Bool
+miMarkOverlappedWindows(pWin, pFirst, ppLayerWin)
+    WindowPtr pWin;
+    WindowPtr pFirst;
+    WindowPtr *ppLayerWin;
+{
+    register BoxPtr box;
+    register WindowPtr pChild, pLast;
+    Bool anyMarked = FALSE;
+    MarkWindowProcPtr MarkWindow = pWin->drawable.pScreen->MarkWindow;
+    ScreenPtr pScreen;
+
+    pScreen = pWin->drawable.pScreen;
+
+    /* single layered systems are easy */
+    if (ppLayerWin) *ppLayerWin = pWin;
+
+    if (pWin == pFirst)
+    {
+	/* Blindly mark pWin and all of its inferiors.	 This is a slight
+	 * overkill if there are mapped windows that outside pWin's border,
+	 * but it's better than wasting time on RectIn checks.
+	 */
+	pChild = pWin;
+	while (1)
+	{
+	    if (pChild->viewable)
+	    {
+		if (REGION_BROKEN (pScreen, &pChild->winSize))
+		    SetWinSize (pChild);
+		if (REGION_BROKEN (pScreen, &pChild->borderSize))
+		    SetBorderSize (pChild);
+		(* MarkWindow)(pChild);
+		if (pChild->firstChild)
+		{
+		    pChild = pChild->firstChild;
+		    continue;
+		}
+	    }
+	    while (!pChild->nextSib && (pChild != pWin))
+		pChild = pChild->parent;
+	    if (pChild == pWin)
+		break;
+	    pChild = pChild->nextSib;
+	}
+	anyMarked = TRUE;
+	pFirst = pFirst->nextSib;
+    }
+    if ( (pChild = pFirst) )
+    {
+	box = REGION_EXTENTS(pChild->drawable.pScreen, &pWin->borderSize);
+	pLast = pChild->parent->lastChild;
+	while (1)
+	{
+	    if (pChild->viewable)
+	    {
+		if (REGION_BROKEN (pScreen, &pChild->winSize))
+		    SetWinSize (pChild);
+		if (REGION_BROKEN (pScreen, &pChild->borderSize))
+		    SetBorderSize (pChild);
+		if (RECT_IN_REGION(pScreen, &pChild->borderSize, box))
+		{
+		    (* MarkWindow)(pChild);
+		    anyMarked = TRUE;
+		    if (pChild->firstChild)
+		    {
+			pChild = pChild->firstChild;
+			continue;
+		    }
+		}
+	    }
+	    while (!pChild->nextSib && (pChild != pLast))
+		pChild = pChild->parent;
+	    if (pChild == pLast)
+		break;
+	    pChild = pChild->nextSib;
+	}
+    }
+    if (anyMarked)
+	(* MarkWindow)(pWin->parent);
+    return anyMarked;
+}
+
+/*****
+ *  miHandleValidateExposures(pWin)
+ *    starting at pWin, draw background in any windows that have exposure
+ *    regions, translate the regions, restore any backing store,
+ *    and then send any regions still exposed to the client
+ *****/
+void
+miHandleValidateExposures(pWin)
+    WindowPtr pWin;
+{
+    register WindowPtr pChild;
+    register ValidatePtr val;
+    ScreenPtr pScreen;
+    WindowExposuresProcPtr WindowExposures;
+
+    pScreen = pWin->drawable.pScreen;
+
+    pChild = pWin;
+    WindowExposures = pChild->drawable.pScreen->WindowExposures;
+    while (1)
+    {
+	if ( (val = pChild->valdata) )
+	{
+	    if (REGION_NOTEMPTY(pScreen, &val->after.borderExposed))
+		(*pChild->drawable.pScreen->PaintWindowBorder)(pChild,
+						    &val->after.borderExposed,
+						    PW_BORDER);
+	    REGION_UNINIT(pScreen, &val->after.borderExposed);
+	    (*WindowExposures)(pChild, &val->after.exposed, NullRegion);
+	    REGION_UNINIT(pScreen, &val->after.exposed);
+	    xfree(val);
+	    pChild->valdata = (ValidatePtr)NULL;
+	    if (pChild->firstChild)
+	    {
+		pChild = pChild->firstChild;
+		continue;
+	    }
+	}
+	while (!pChild->nextSib && (pChild != pWin))
+	    pChild = pChild->parent;
+	if (pChild == pWin)
+	    break;
+	pChild = pChild->nextSib;
+    }
+}
+
+void
+miMoveWindow(pWin, x, y, pNextSib, kind)
+    register WindowPtr pWin;
+    int x,y;
+    WindowPtr pNextSib;
+    VTKind kind;
+{
+    WindowPtr pParent;
+    Bool WasViewable = (Bool)(pWin->viewable);
+    short bw;
+    RegionPtr oldRegion = NULL;
+    DDXPointRec oldpt;
+    Bool anyMarked = FALSE;
+    register ScreenPtr pScreen;
+    WindowPtr windowToValidate;
+#ifdef DO_SAVE_UNDERS
+    Bool dosave = FALSE;
+#endif
+    WindowPtr pLayerWin;
+
+    /* if this is a root window, can't be moved */
+    if (!(pParent = pWin->parent))
+       return ;
+    pScreen = pWin->drawable.pScreen;
+    bw = wBorderWidth (pWin);
+
+    oldpt.x = pWin->drawable.x;
+    oldpt.y = pWin->drawable.y;
+    if (WasViewable)
+    {
+	oldRegion = REGION_CREATE(pScreen, NullBox, 1);
+	REGION_COPY(pScreen, oldRegion, &pWin->borderClip);
+	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin, &pLayerWin);
+    }
+    pWin->origin.x = x + (int)bw;
+    pWin->origin.y = y + (int)bw;
+    x = pWin->drawable.x = pParent->drawable.x + x + (int)bw;
+    y = pWin->drawable.y = pParent->drawable.y + y + (int)bw;
+
+    SetWinSize (pWin);
+    SetBorderSize (pWin);
+
+    (*pScreen->PositionWindow)(pWin, x, y);
+
+    windowToValidate = MoveWindowInStack(pWin, pNextSib);
+
+    ResizeChildrenWinSize(pWin, x - oldpt.x, y - oldpt.y, 0, 0);
+
+    if (WasViewable)
+    {
+	if (pLayerWin == pWin)
+	    anyMarked |= (*pScreen->MarkOverlappedWindows)
+				(pWin, windowToValidate, (WindowPtr *)NULL);
+	else
+	    anyMarked |= (*pScreen->MarkOverlappedWindows)
+				(pWin, pLayerWin, (WindowPtr *)NULL);
+
+#ifdef DO_SAVE_UNDERS
+	if (DO_SAVE_UNDERS(pWin))
+	{
+	    dosave = (*pScreen->ChangeSaveUnder)(pLayerWin, windowToValidate);
+	}
+#endif /* DO_SAVE_UNDERS */
+
+	if (anyMarked)
+	{
+	    (*pScreen->ValidateTree)(pLayerWin->parent, NullWindow, kind);
+	    (* pWin->drawable.pScreen->CopyWindow)(pWin, oldpt, oldRegion);
+	    REGION_DESTROY(pScreen, oldRegion);
+	    /* XXX need to retile border if ParentRelative origin */
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+	}
+#ifdef DO_SAVE_UNDERS
+	if (dosave)
+	    (*pScreen->PostChangeSaveUnder)(pLayerWin, windowToValidate);
+#endif /* DO_SAVE_UNDERS */
+	if (anyMarked && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, NullWindow, kind);
+    }
+    if (pWin->realized)
+	WindowsRestructured ();
+}
+
+
+/*
+ * pValid is a region of the screen which has been
+ * successfully copied -- recomputed exposed regions for affected windows
+ */
+
+static int
+miRecomputeExposures (
+    register WindowPtr	pWin,
+    pointer		value) /* must conform to VisitWindowProcPtr */
+{
+    register ScreenPtr	pScreen;
+    RegionPtr	pValid = (RegionPtr)value;
+
+    if (pWin->valdata)
+    {
+	pScreen = pWin->drawable.pScreen;
+	/*
+	 * compute exposed regions of this window
+	 */
+	REGION_SUBTRACT(pScreen, &pWin->valdata->after.exposed,
+			&pWin->clipList, pValid);
+	/*
+	 * compute exposed regions of the border
+	 */
+	REGION_SUBTRACT(pScreen, &pWin->valdata->after.borderExposed,
+			     &pWin->borderClip, &pWin->winSize);
+	REGION_SUBTRACT(pScreen, &pWin->valdata->after.borderExposed,
+			     &pWin->valdata->after.borderExposed, pValid);
+	return WT_WALKCHILDREN;
+    }
+    return WT_NOMATCH;
+}
+
+void
+miSlideAndSizeWindow(pWin, x, y, w, h, pSib)
+    register WindowPtr pWin;
+    int x,y;
+    unsigned int w, h;
+    WindowPtr pSib;
+{
+    WindowPtr pParent;
+    Bool WasViewable = (Bool)(pWin->viewable);
+    unsigned short width = pWin->drawable.width,
+		   height = pWin->drawable.height;
+    short oldx = pWin->drawable.x,
+	  oldy = pWin->drawable.y;
+    int bw = wBorderWidth (pWin);
+    short dw, dh;
+    DDXPointRec oldpt;
+    RegionPtr oldRegion = NULL;
+    Bool anyMarked = FALSE;
+    register ScreenPtr pScreen;
+    WindowPtr pFirstChange;
+    register WindowPtr pChild;
+    RegionPtr	gravitate[StaticGravity + 1];
+    register unsigned g;
+    int		nx, ny;		/* destination x,y */
+    int		newx, newy;	/* new inner window position */
+    RegionPtr	pRegion = NULL;
+    RegionPtr	destClip;	/* portions of destination already written */
+    RegionPtr	oldWinClip = NULL;	/* old clip list for window */
+    RegionPtr	borderVisible = NullRegion; /* visible area of the border */
+    RegionPtr	bsExposed = NullRegion;	    /* backing store exposures */
+    Bool	shrunk = FALSE; /* shrunk in an inner dimension */
+    Bool	moved = FALSE;	/* window position changed */
+#ifdef DO_SAVE_UNDERS
+    Bool	dosave = FALSE;
+#endif
+    WindowPtr  pLayerWin;
+
+    /* if this is a root window, can't be resized */
+    if (!(pParent = pWin->parent))
+	return ;
+
+    pScreen = pWin->drawable.pScreen;
+    newx = pParent->drawable.x + x + bw;
+    newy = pParent->drawable.y + y + bw;
+    if (WasViewable)
+    {
+	anyMarked = FALSE;
+	/*
+	 * save the visible region of the window
+	 */
+	oldRegion = REGION_CREATE(pScreen, NullBox, 1);
+	REGION_COPY(pScreen, oldRegion, &pWin->winSize);
+
+	/*
+	 * categorize child windows into regions to be moved
+	 */
+	for (g = 0; g <= StaticGravity; g++)
+	    gravitate[g] = (RegionPtr) NULL;
+	for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
+	{
+	    g = pChild->winGravity;
+	    if (g != UnmapGravity)
+	    {
+		if (!gravitate[g])
+		    gravitate[g] = REGION_CREATE(pScreen, NullBox, 1);
+		REGION_UNION(pScreen, gravitate[g],
+				   gravitate[g], &pChild->borderClip);
+	    }
+	    else
+	    {
+		UnmapWindow(pChild, TRUE);
+		anyMarked = TRUE;
+	    }
+	}
+	anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pWin, 
+						       &pLayerWin);
+
+	oldWinClip = NULL;
+	if (pWin->bitGravity != ForgetGravity)
+	{
+	    oldWinClip = REGION_CREATE(pScreen, NullBox, 1);
+	    REGION_COPY(pScreen, oldWinClip, &pWin->clipList);
+	}
+	/*
+	 * if the window is changing size, borderExposed
+	 * can't be computed correctly without some help.
+	 */
+	if (pWin->drawable.height > h || pWin->drawable.width > w)
+	    shrunk = TRUE;
+
+	if (newx != oldx || newy != oldy)
+	    moved = TRUE;
+
+	if ((pWin->drawable.height != h || pWin->drawable.width != w) &&
+	    HasBorder (pWin))
+	{
+	    borderVisible = REGION_CREATE(pScreen, NullBox, 1);
+	    /* for tiled borders, we punt and draw the whole thing */
+	    if (pWin->borderIsPixel || !moved)
+	    {
+		if (shrunk || moved)
+		    REGION_SUBTRACT(pScreen, borderVisible,
+					  &pWin->borderClip,
+					  &pWin->winSize);
+		else
+		    REGION_COPY(pScreen, borderVisible,
+					    &pWin->borderClip);
+	    }
+	}
+    }
+    pWin->origin.x = x + bw;
+    pWin->origin.y = y + bw;
+    pWin->drawable.height = h;
+    pWin->drawable.width = w;
+
+    x = pWin->drawable.x = newx;
+    y = pWin->drawable.y = newy;
+
+    SetWinSize (pWin);
+    SetBorderSize (pWin);
+
+    dw = (int)w - (int)width;
+    dh = (int)h - (int)height;
+    ResizeChildrenWinSize(pWin, x - oldx, y - oldy, dw, dh);
+
+    /* let the hardware adjust background and border pixmaps, if any */
+    (*pScreen->PositionWindow)(pWin, x, y);
+
+    pFirstChange = MoveWindowInStack(pWin, pSib);
+
+    if (WasViewable)
+    {
+	pRegion = REGION_CREATE(pScreen, NullBox, 1);
+	if (pWin->backStorage)
+	    REGION_COPY(pScreen, pRegion, &pWin->clipList);
+
+	if (pLayerWin == pWin)
+	    anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pFirstChange,
+						(WindowPtr *)NULL);
+	else
+	    anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pLayerWin,
+						(WindowPtr *)NULL);
+
+	if (pWin->valdata)
+	{
+	    pWin->valdata->before.resized = TRUE;
+	    pWin->valdata->before.borderVisible = borderVisible;
+	}
+
+#ifdef DO_SAVE_UNDERS
+	if (DO_SAVE_UNDERS(pWin))
+	{
+	    dosave = (*pScreen->ChangeSaveUnder)(pLayerWin, pFirstChange);
+	}
+#endif /* DO_SAVE_UNDERS */
+
+	if (anyMarked)
+	    (*pScreen->ValidateTree)(pLayerWin->parent, pFirstChange, VTOther);
+	/*
+	 * the entire window is trashed unless bitGravity
+	 * recovers portions of it
+	 */
+	REGION_COPY(pScreen, &pWin->valdata->after.exposed, &pWin->clipList);
+    }
+
+    GravityTranslate (x, y, oldx, oldy, dw, dh, pWin->bitGravity, &nx, &ny);
+
+    if (pWin->backStorage &&
+	((pWin->backingStore == Always) || WasViewable))
+    {
+	if (!WasViewable)
+	    pRegion = &pWin->clipList; /* a convenient empty region */
+	if (pWin->bitGravity == ForgetGravity)
+	    bsExposed = (*pScreen->TranslateBackingStore)
+				(pWin, 0, 0, NullRegion, oldx, oldy);
+	else
+	{
+	    bsExposed = (*pScreen->TranslateBackingStore)
+			     (pWin, nx - x, ny - y, pRegion, oldx, oldy);
+	}
+    }
+
+    if (WasViewable)
+    {
+	/* avoid the border */
+	if (HasBorder (pWin))
+	{
+	    int	offx, offy, dx, dy;
+
+	    /* kruft to avoid double translates for each gravity */
+	    offx = 0;
+	    offy = 0;
+	    for (g = 0; g <= StaticGravity; g++)
+	    {
+		if (!gravitate[g])
+		    continue;
+
+		/* align winSize to gravitate[g].
+		 * winSize is in new coordinates,
+		 * gravitate[g] is still in old coordinates */
+		GravityTranslate (x, y, oldx, oldy, dw, dh, g, &nx, &ny);
+		
+		dx = (oldx - nx) - offx;
+		dy = (oldy - ny) - offy;
+		if (dx || dy)
+		{
+		    REGION_TRANSLATE(pScreen, &pWin->winSize, dx, dy);
+		    offx += dx;
+		    offy += dy;
+		}
+		REGION_INTERSECT(pScreen, gravitate[g], gravitate[g],
+				 &pWin->winSize);
+	    }
+	    /* get winSize back where it belongs */
+	    if (offx || offy)
+		REGION_TRANSLATE(pScreen, &pWin->winSize, -offx, -offy);
+	}
+	/*
+	 * add screen bits to the appropriate bucket
+	 */
+
+	if (oldWinClip)
+	{
+	    /*
+	     * clip to new clipList
+	     */
+	    REGION_COPY(pScreen, pRegion, oldWinClip);
+	    REGION_TRANSLATE(pScreen, pRegion, nx - oldx, ny - oldy);
+	    REGION_INTERSECT(pScreen, oldWinClip, pRegion, &pWin->clipList);
+	    /*
+	     * don't step on any gravity bits which will be copied after this
+	     * region.	Note -- this assumes that the regions will be copied
+	     * in gravity order.
+	     */
+	    for (g = pWin->bitGravity + 1; g <= StaticGravity; g++)
+	    {
+		if (gravitate[g])
+		    REGION_SUBTRACT(pScreen, oldWinClip, oldWinClip,
+					gravitate[g]);
+	    }
+	    REGION_TRANSLATE(pScreen, oldWinClip, oldx - nx, oldy - ny);
+	    g = pWin->bitGravity;
+	    if (!gravitate[g])
+		gravitate[g] = oldWinClip;
+	    else
+	    {
+		REGION_UNION(pScreen, gravitate[g], gravitate[g], oldWinClip);
+		REGION_DESTROY(pScreen, oldWinClip);
+	    }
+	}
+
+	/*
+	 * move the bits on the screen
+	 */
+
+	destClip = NULL;
+
+	for (g = 0; g <= StaticGravity; g++)
+	{
+	    if (!gravitate[g])
+		continue;
+
+	    GravityTranslate (x, y, oldx, oldy, dw, dh, g, &nx, &ny);
+
+	    oldpt.x = oldx + (x - nx);
+	    oldpt.y = oldy + (y - ny);
+
+	    /* Note that gravitate[g] is *translated* by CopyWindow */
+
+	    /* only copy the remaining useful bits */
+
+	    REGION_INTERSECT(pScreen, gravitate[g], gravitate[g], oldRegion);
+
+	    /* clip to not overwrite already copied areas */
+
+	    if (destClip) {
+		REGION_TRANSLATE(pScreen, destClip, oldpt.x - x, oldpt.y - y);
+		REGION_SUBTRACT(pScreen, gravitate[g], gravitate[g], destClip);
+		REGION_TRANSLATE(pScreen, destClip, x - oldpt.x, y - oldpt.y);
+	    }
+
+	    /* and move those bits */
+
+	    if (oldpt.x != x || oldpt.y != y)
+		(*pWin->drawable.pScreen->CopyWindow)(pWin, oldpt, gravitate[g]);
+
+	    /* remove any overwritten bits from the remaining useful bits */
+
+	    REGION_SUBTRACT(pScreen, oldRegion, oldRegion, gravitate[g]);
+
+	    /*
+	     * recompute exposed regions of child windows
+	     */
+	
+	    for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
+	    {
+		if (pChild->winGravity != g)
+		    continue;
+		REGION_INTERSECT(pScreen, pRegion,
+				       &pChild->borderClip, gravitate[g]);
+		TraverseTree (pChild, miRecomputeExposures, (pointer)pRegion);
+	    }
+
+	    /*
+	     * remove the successfully copied regions of the
+	     * window from its exposed region
+	     */
+
+	    if (g == pWin->bitGravity)
+		REGION_SUBTRACT(pScreen, &pWin->valdata->after.exposed,
+				     &pWin->valdata->after.exposed, gravitate[g]);
+	    if (!destClip)
+		destClip = gravitate[g];
+	    else
+	    {
+		REGION_UNION(pScreen, destClip, destClip, gravitate[g]);
+		REGION_DESTROY(pScreen, gravitate[g]);
+	    }
+	}
+
+	REGION_DESTROY(pScreen, oldRegion);
+	REGION_DESTROY(pScreen, pRegion);
+	if (destClip)
+	    REGION_DESTROY(pScreen, destClip);
+	if (bsExposed)
+	{
+	    RegionPtr	valExposed = NullRegion;
+
+	    if (pWin->valdata)
+		valExposed = &pWin->valdata->after.exposed;
+	    (*pScreen->WindowExposures) (pWin, valExposed, bsExposed);
+	    if (valExposed)
+		REGION_EMPTY(pScreen, valExposed);
+	    REGION_DESTROY(pScreen, bsExposed);
+	}
+	if (anyMarked)
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+#ifdef DO_SAVE_UNDERS
+	if (dosave)
+	{
+	    (*pScreen->PostChangeSaveUnder)(pLayerWin, pFirstChange);
+	}
+#endif /* DO_SAVE_UNDERS */
+	if (anyMarked && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, pFirstChange,
+					  VTOther);
+    }
+    else if (bsExposed)
+    {
+	(*pScreen->WindowExposures) (pWin, NullRegion, bsExposed);
+	REGION_DESTROY(pScreen, bsExposed);
+    }
+    if (pWin->realized)
+	WindowsRestructured ();
+}
+
+WindowPtr
+miGetLayerWindow(pWin)
+    WindowPtr pWin;
+{
+    return pWin->firstChild;
+}
+
+#ifdef SHAPE
+/******
+ *
+ * miSetShape
+ *    The border/window shape has changed.  Recompute winSize/borderSize
+ *    and send appropriate exposure events
+ */
+
+void
+miSetShape(pWin)
+    register WindowPtr	pWin;
+{
+    Bool	WasViewable = (Bool)(pWin->viewable);
+    register ScreenPtr pScreen = pWin->drawable.pScreen;
+    Bool	anyMarked = FALSE;
+    RegionPtr	pOldClip = NULL, bsExposed;
+#ifdef DO_SAVE_UNDERS
+    Bool	dosave = FALSE;
+#endif
+    WindowPtr   pLayerWin;
+
+    if (WasViewable)
+    {
+	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,
+						      &pLayerWin);
+	if (pWin->valdata)
+	{
+	    if (HasBorder (pWin))
+	    {
+		RegionPtr	borderVisible;
+
+		borderVisible = REGION_CREATE(pScreen, NullBox, 1);
+		REGION_SUBTRACT(pScreen, borderVisible,
+				      &pWin->borderClip, &pWin->winSize);
+		pWin->valdata->before.borderVisible = borderVisible;
+	    }
+	    pWin->valdata->before.resized = TRUE;
+	}
+    }
+
+    SetWinSize (pWin);
+    SetBorderSize (pWin);
+
+    ResizeChildrenWinSize(pWin, 0, 0, 0, 0);
+
+    if (WasViewable)
+    {
+	if (pWin->backStorage)
+	{
+	    pOldClip = REGION_CREATE(pScreen, NullBox, 1);
+	    REGION_COPY(pScreen, pOldClip, &pWin->clipList);
+	}
+
+	anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pWin,
+						(WindowPtr *)NULL);
+
+#ifdef DO_SAVE_UNDERS
+	if (DO_SAVE_UNDERS(pWin))
+	{
+	    dosave = (*pScreen->ChangeSaveUnder)(pLayerWin, pLayerWin);
+	}
+#endif /* DO_SAVE_UNDERS */
+
+	if (anyMarked)
+	    (*pScreen->ValidateTree)(pLayerWin->parent, NullWindow, VTOther);
+    }
+
+    if (pWin->backStorage &&
+	((pWin->backingStore == Always) || WasViewable))
+    {
+	if (!WasViewable)
+	    pOldClip = &pWin->clipList; /* a convenient empty region */
+	bsExposed = (*pScreen->TranslateBackingStore)
+			     (pWin, 0, 0, pOldClip,
+			      pWin->drawable.x, pWin->drawable.y);
+#ifdef NXAGENT_SERVER
+
+        /*
+         * We got a few, rare, segfaults here after having
+         * started using the backing store. It may be a
+         * different bug but miChangeSaveUnder() calls mi-
+         * CheckSubSaveUnder() that, in turn, can change
+         * the backing store attribute of the window. This
+         * means that we may try to destroy the region
+         * even if it was not created at the beginning of
+         * this function as, at the time, the backing store
+         * was off. miCheckSubSaveUnder() appear to get a
+         * pointer to the parent, so maybe doesn't change
+         * the attribute of the window itself. This is to
+         * be better investigated.
+         */
+
+        if (WasViewable && pOldClip)
+            REGION_DESTROY(pScreen, pOldClip);
+#else
+	if (WasViewable)
+	    REGION_DESTROY(pScreen, pOldClip);
+#endif
+	if (bsExposed)
+	{
+	    RegionPtr	valExposed = NullRegion;
+    
+	    if (pWin->valdata)
+		valExposed = &pWin->valdata->after.exposed;
+	    (*pScreen->WindowExposures) (pWin, valExposed, bsExposed);
+	    if (valExposed)
+		REGION_EMPTY(pScreen, valExposed);
+	    REGION_DESTROY(pScreen, bsExposed);
+	}
+    }
+    if (WasViewable)
+    {
+	if (anyMarked)
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+#ifdef DO_SAVE_UNDERS
+	if (dosave)
+	    (*pScreen->PostChangeSaveUnder)(pLayerWin, pLayerWin);
+#endif /* DO_SAVE_UNDERS */
+	if (anyMarked && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, NullWindow, VTOther);
+    }
+    if (pWin->realized)
+	WindowsRestructured ();
+    CheckCursorConfinement(pWin);
+}
+#endif
+
+/* Keeps the same inside(!) origin */
+
+void
+miChangeBorderWidth(pWin, width)
+    register WindowPtr pWin;
+    unsigned int width;
+{
+    WindowPtr pParent;
+    int oldwidth;
+    Bool anyMarked = FALSE;
+    register ScreenPtr pScreen;
+    Bool WasViewable = (Bool)(pWin->viewable);
+    Bool HadBorder;
+#ifdef DO_SAVE_UNDERS
+    Bool	dosave = FALSE;
+#endif
+    WindowPtr  pLayerWin;
+
+    oldwidth = wBorderWidth (pWin);
+    if (oldwidth == width)
+	return;
+    HadBorder = HasBorder(pWin);
+    pScreen = pWin->drawable.pScreen;
+    pParent = pWin->parent;
+    if (WasViewable && width < oldwidth)
+	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin, &pLayerWin);
+
+    pWin->borderWidth = width;
+    SetBorderSize (pWin);
+
+    if (WasViewable)
+    {
+	if (width > oldwidth)
+	{
+	    anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,
+							  &pLayerWin);
+	    /*
+	     * save the old border visible region to correctly compute
+	     * borderExposed.
+	     */
+	    if (pWin->valdata && HadBorder)
+	    {
+		RegionPtr   borderVisible;
+		borderVisible = REGION_CREATE(pScreen, NULL, 1);
+		REGION_SUBTRACT(pScreen, borderVisible,
+				      &pWin->borderClip, &pWin->winSize);
+		pWin->valdata->before.borderVisible = borderVisible;
+	    }
+	}
+#ifdef DO_SAVE_UNDERS
+	if (DO_SAVE_UNDERS(pWin))
+	{
+	    dosave = (*pScreen->ChangeSaveUnder)(pLayerWin, pWin->nextSib);
+	}
+#endif /* DO_SAVE_UNDERS */
+
+	if (anyMarked)
+	{
+	    (*pScreen->ValidateTree)(pLayerWin->parent, pLayerWin, VTOther);
+	    (*pScreen->HandleExposures)(pLayerWin->parent);
+	}
+#ifdef DO_SAVE_UNDERS
+	if (dosave)
+	    (*pScreen->PostChangeSaveUnder)(pLayerWin, pWin->nextSib);
+#endif /* DO_SAVE_UNDERS */
+	if (anyMarked && pScreen->PostValidateTree)
+	    (*pScreen->PostValidateTree)(pLayerWin->parent, pLayerWin,
+					  VTOther);
+    }
+    if (pWin->realized)
+	WindowsRestructured ();
+}
+
+void
+miMarkUnrealizedWindow(pChild, pWin, fromConfigure)
+    WindowPtr pChild;
+    WindowPtr pWin;
+    Bool fromConfigure;
+{
+    if ((pChild != pWin) || fromConfigure)
+    {
+	REGION_EMPTY(pChild->drawable.pScreen, &pChild->clipList);
+	if (pChild->drawable.pScreen->ClipNotify)
+	    (* pChild->drawable.pScreen->ClipNotify)(pChild, 0, 0);
+	REGION_EMPTY(pChild->drawable.pScreen, &pChild->borderClip);
+    }
+}
+
+void
+miSegregateChildren(WindowPtr pWin, RegionPtr pReg, int depth)
+{
+    ScreenPtr pScreen;
+    WindowPtr pChild;
+
+    pScreen = pWin->drawable.pScreen;
+
+    for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
+    {
+	if (pChild->drawable.depth == depth)
+	    REGION_UNION(pScreen, pReg, pReg, &pChild->borderClip);
+
+	if (pChild->firstChild)
+	    miSegregateChildren(pChild, pReg, depth);
+    }
+}
+
+#endif /* #ifdef NXAGENT_UPGRADE */