Synchronised line endinge with release branch

1 files changed, 832 insertions, 832 deletions

diff --git a/xorg-server/composite/compwindow.c b/xorg-server/composite/compwindow.c
index 967e992c9..d2a866d6f 100644
--- a/xorg-server/composite/compwindow.c
+++ b/xorg-server/composite/compwindow.c
@@ -1,832 +1,832 @@
-/*

- * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.

- *

- * 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 © 2003 Keith Packard

- *

- * 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, and that the name of Keith Packard not be used in

- * advertising or publicity pertaining to distribution of the software without

- * specific, written prior permission.  Keith Packard makes no

- * representations about the suitability of this software for any purpose.  It

- * is provided "as is" without express or implied warranty.

- *

- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

- * EVENT SHALL KEITH PACKARD 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.

- */

-

-#ifdef HAVE_DIX_CONFIG_H

-#include <dix-config.h>

-#endif

-

-#include "compint.h"

-

-#ifdef PANORAMIX

-#include "panoramiXsrv.h"

-#endif

-

-#ifdef COMPOSITE_DEBUG

-static int

-compCheckWindow (WindowPtr pWin, pointer data)

-{

-    ScreenPtr	pScreen = pWin->drawable.pScreen;

-    PixmapPtr	pWinPixmap = (*pScreen->GetWindowPixmap) (pWin);

-    PixmapPtr	pParentPixmap = pWin->parent ? (*pScreen->GetWindowPixmap) (pWin->parent) : 0;

-    PixmapPtr	pScreenPixmap = (*pScreen->GetScreenPixmap) (pScreen);

-

-    if (!pWin->parent)

-    {

-	assert (pWin->redirectDraw == RedirectDrawNone);

-	assert (pWinPixmap == pScreenPixmap);

-    }

-    else if (pWin->redirectDraw != RedirectDrawNone)

-    {

-	assert (pWinPixmap != pParentPixmap);

-	assert (pWinPixmap != pScreenPixmap);

-    }

-    else

-    {

-	assert (pWinPixmap == pParentPixmap);

-    }

-    assert (0 < pWinPixmap->refcnt && pWinPixmap->refcnt < 3);

-    assert (0 < pScreenPixmap->refcnt && pScreenPixmap->refcnt < 3);

-    if (pParentPixmap)

-	assert (0 <= pParentPixmap->refcnt && pParentPixmap->refcnt < 3);

-    return WT_WALKCHILDREN;

-}

-

-void

-compCheckTree (ScreenPtr pScreen)

-{

-    WalkTree (pScreen, compCheckWindow, 0);

-}

-#endif

-

-typedef struct _compPixmapVisit {

-    WindowPtr	pWindow;

-    PixmapPtr	pPixmap;

-} CompPixmapVisitRec, *CompPixmapVisitPtr;

-

-static Bool

-compRepaintBorder (ClientPtr pClient, pointer closure)

-{

-    WindowPtr pWindow;

-    int rc = dixLookupWindow(&pWindow, (XID)(intptr_t)closure, pClient, DixWriteAccess);

-

-    if (rc == Success) {

-	RegionRec exposed;

-

-	RegionNull(&exposed);

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

-	miPaintWindow(pWindow, &exposed, PW_BORDER);

-	RegionUninit(&exposed);

-    }

-    return TRUE;

-}

-

-static int

-compSetPixmapVisitWindow (WindowPtr pWindow, pointer data)

-{

-    CompPixmapVisitPtr	pVisit = (CompPixmapVisitPtr) data;

-    ScreenPtr		pScreen = pWindow->drawable.pScreen;

-

-    if (pWindow != pVisit->pWindow && pWindow->redirectDraw != RedirectDrawNone)

-	return WT_DONTWALKCHILDREN;

-    (*pScreen->SetWindowPixmap) (pWindow, pVisit->pPixmap);

-    /*

-     * Recompute winSize and borderSize.  This is duplicate effort

-     * when resizing pixmaps, but necessary when changing redirection.

-     * Might be nice to fix this.

-     */

-    SetWinSize (pWindow);

-    SetBorderSize (pWindow);

-    if (HasBorder (pWindow))

-	QueueWorkProc (compRepaintBorder, serverClient,

-		       (pointer)(intptr_t) pWindow->drawable.id);

-    return WT_WALKCHILDREN;

-}

-

-void

-compSetPixmap (WindowPtr pWindow, PixmapPtr pPixmap)

-{

-    CompPixmapVisitRec	visitRec;

-

-    visitRec.pWindow = pWindow;

-    visitRec.pPixmap = pPixmap;

-    TraverseTree (pWindow, compSetPixmapVisitWindow, (pointer) &visitRec);

-    compCheckTree (pWindow->drawable.pScreen);

-}

-

-Bool

-compCheckRedirect (WindowPtr pWin)

-{

-    CompWindowPtr   cw = GetCompWindow (pWin);

-    CompScreenPtr   cs = GetCompScreen(pWin->drawable.pScreen);

-    Bool	    should;

-

-    should = pWin->realized && (pWin->drawable.class != InputOnly) &&

-	     (cw != NULL) && (pWin->parent != NULL);

-

-    /* Never redirect the overlay window */

-    if (cs->pOverlayWin != NULL) {

-	if (pWin == cs->pOverlayWin) {

-	    should = FALSE;

-	}

-    }

-

-    if (should != (pWin->redirectDraw != RedirectDrawNone))

-    {

-	if (should)

-	    return compAllocPixmap (pWin);

-	else {

-	    ScreenPtr pScreen = pWin->drawable.pScreen;

-	    PixmapPtr pPixmap = (*pScreen->GetWindowPixmap) (pWin);

-	    compSetParentPixmap (pWin);

-	    compRestoreWindow (pWin, pPixmap);

-	    (*pScreen->DestroyPixmap) (pPixmap);

-	}

-    } else if (should) {

-	if (cw->update == CompositeRedirectAutomatic)

-	    pWin->redirectDraw = RedirectDrawAutomatic;

-	else

-	    pWin->redirectDraw = RedirectDrawManual;

-    }

-    return TRUE;

-}

-

-static int

-updateOverlayWindow(ScreenPtr pScreen)

-{

-	CompScreenPtr cs;

-	WindowPtr pWin; /* overlay window */

-	XID vlist[2];

-	int w = pScreen->width;

-	int h = pScreen->height;

-

-#ifdef PANORAMIX

-	if (!noPanoramiXExtension)

-	{

-	    w = PanoramiXPixWidth;

-	    h = PanoramiXPixHeight;

-	}

-#endif

-

-	cs = GetCompScreen(pScreen);

-	if ((pWin = cs->pOverlayWin) != NULL) {

-		if ((pWin->drawable.width == w) &&

-			(pWin->drawable.height == h))

-			return Success;

-

-		/* Let's resize the overlay window. */

-		vlist[0] = w;

-		vlist[1] = h;

-		return ConfigureWindow(pWin, CWWidth | CWHeight, vlist, wClient(pWin));

-	}

-

-	/* Let's be on the safe side and not assume an overlay window is always allocated. */

-	return Success;

-}

-

-Bool

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

-{

-    ScreenPtr	    pScreen = pWin->drawable.pScreen;

-    CompScreenPtr   cs = GetCompScreen (pScreen);

-    Bool	    ret = TRUE;

-

-    pScreen->PositionWindow = cs->PositionWindow;

-    /*

-     * "Shouldn't need this as all possible places should be wrapped

-     *

-    compCheckRedirect (pWin);

-     */

-#ifdef COMPOSITE_DEBUG

-    if ((pWin->redirectDraw != RedirectDrawNone) !=

-	(pWin->viewable && (GetCompWindow(pWin) != NULL)))

-	OsAbort ();

-#endif

-    if (pWin->redirectDraw != RedirectDrawNone)

-    {

-	PixmapPtr   pPixmap = (*pScreen->GetWindowPixmap) (pWin);

-	int	    bw = wBorderWidth (pWin);

-	int	    nx = pWin->drawable.x - bw;

-	int	    ny = pWin->drawable.y - bw;

-

-	if (pPixmap->screen_x != nx || pPixmap->screen_y != ny)

-	{

-	    pPixmap->screen_x = nx;

-	    pPixmap->screen_y = ny;

-	    pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;

-	}

-    }

-

-    if (!(*pScreen->PositionWindow) (pWin, x, y))

-	ret = FALSE;

-    cs->PositionWindow = pScreen->PositionWindow;

-    pScreen->PositionWindow = compPositionWindow;

-    compCheckTree (pWin->drawable.pScreen);

-    if (updateOverlayWindow(pScreen) != Success)

-	ret = FALSE;

-    return ret;

-}

-

-Bool

-compRealizeWindow (WindowPtr pWin)

-{

-    ScreenPtr	    pScreen = pWin->drawable.pScreen;

-    CompScreenPtr   cs = GetCompScreen (pScreen);

-    Bool	    ret = TRUE;

-

-    pScreen->RealizeWindow = cs->RealizeWindow;

-    compCheckRedirect (pWin);

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

-	ret = FALSE;

-    cs->RealizeWindow = pScreen->RealizeWindow;

-    pScreen->RealizeWindow = compRealizeWindow;

-    compCheckTree (pWin->drawable.pScreen);

-    return ret;

-}

-

-Bool

-compUnrealizeWindow (WindowPtr pWin)

-{

-    ScreenPtr	    pScreen = pWin->drawable.pScreen;

-    CompScreenPtr   cs = GetCompScreen (pScreen);

-    Bool	    ret = TRUE;

-

-    pScreen->UnrealizeWindow = cs->UnrealizeWindow;

-    compCheckRedirect (pWin);

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

-	ret = FALSE;

-    cs->UnrealizeWindow = pScreen->UnrealizeWindow;

-    pScreen->UnrealizeWindow = compUnrealizeWindow;

-    compCheckTree (pWin->drawable.pScreen);

-    return ret;

-}

-

-/*

- * Called after the borderClip for the window has settled down

- * We use this to make sure our extra borderClip has the right origin

- */

-

-void

-compClipNotify (WindowPtr pWin, int dx, int dy)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-    CompWindowPtr	cw = GetCompWindow (pWin);

-

-    if (cw)

-    {

-	if (cw->borderClipX != pWin->drawable.x ||

-	    cw->borderClipY != pWin->drawable.y)

-	{

-	    RegionTranslate(&cw->borderClip,

-			      pWin->drawable.x - cw->borderClipX,

-			      pWin->drawable.y - cw->borderClipY);

-	    cw->borderClipX = pWin->drawable.x;

-	    cw->borderClipY = pWin->drawable.y;

-	}

-    }

-    if (cs->ClipNotify)

-    {

-	pScreen->ClipNotify = cs->ClipNotify;

-	(*pScreen->ClipNotify) (pWin, dx, dy);

-	cs->ClipNotify = pScreen->ClipNotify;

-	pScreen->ClipNotify = compClipNotify;

-    }

-}

-

-/*

- * Returns TRUE if the window needs server-provided automatic redirect,

- * which is true if the child and parent aren't both regular or ARGB visuals

- */

-

-static Bool

-compIsAlternateVisual (ScreenPtr    pScreen,

-		       XID	    visual)

-{

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-    int			i;

-

-    for (i = 0; i < cs->numAlternateVisuals; i++)

-	if (cs->alternateVisuals[i] == visual)

-	    return TRUE;

-    return FALSE;

-}

-

-static Bool

-compImplicitRedirect (WindowPtr pWin, WindowPtr pParent)

-{

-    if (pParent)

-    {

-	ScreenPtr	pScreen = pWin->drawable.pScreen;

-	XID		winVisual = wVisual (pWin);

-	XID		parentVisual = wVisual (pParent);

-

-	if (winVisual != parentVisual &&

-	    (compIsAlternateVisual (pScreen, winVisual) ||

-	     compIsAlternateVisual (pScreen, parentVisual)))

-	    return TRUE;

-    }

-    return FALSE;

-}

-

-static void compFreeOldPixmap(WindowPtr pWin)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    if (pWin->redirectDraw != RedirectDrawNone)

-    {

-	CompWindowPtr	cw = GetCompWindow (pWin);

-	if (cw->pOldPixmap)

-	{

-	    (*pScreen->DestroyPixmap) (cw->pOldPixmap);

-	    cw->pOldPixmap = NullPixmap;

-	}

-    }

-}

-void

-compMoveWindow (WindowPtr pWin, int x, int y, WindowPtr pSib, VTKind kind)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-

-    pScreen->MoveWindow = cs->MoveWindow;

-    (*pScreen->MoveWindow) (pWin, x, y, pSib, kind);

-    cs->MoveWindow = pScreen->MoveWindow;

-    pScreen->MoveWindow = compMoveWindow;

-

-    compFreeOldPixmap(pWin);

-    compCheckTree (pScreen);

-}

-

-void

-compResizeWindow (WindowPtr pWin, int x, int y,

-		  unsigned int w, unsigned int h, WindowPtr pSib)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-

-    pScreen->ResizeWindow = cs->ResizeWindow;

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

-    cs->ResizeWindow = pScreen->ResizeWindow;

-    pScreen->ResizeWindow = compResizeWindow;

-

-    compFreeOldPixmap(pWin);

-    compCheckTree (pWin->drawable.pScreen);

-}

-

-void

-compChangeBorderWidth (WindowPtr pWin, unsigned int bw)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-

-    pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;

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

-    cs->ChangeBorderWidth = pScreen->ChangeBorderWidth;

-    pScreen->ChangeBorderWidth = compChangeBorderWidth;

-

-    compFreeOldPixmap(pWin);

-    compCheckTree (pWin->drawable.pScreen);

-}

-

-void

-compReparentWindow (WindowPtr pWin, WindowPtr pPriorParent)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-

-    pScreen->ReparentWindow = cs->ReparentWindow;

-    /*

-     * Remove any implicit redirect due to synthesized visual

-     */

-    if (compImplicitRedirect (pWin, pPriorParent))

-	compUnredirectWindow (serverClient, pWin, CompositeRedirectAutomatic);

-    /*

-     * Handle subwindows redirection

-     */

-    compUnredirectOneSubwindow (pPriorParent, pWin);

-    compRedirectOneSubwindow (pWin->parent, pWin);

-    /*

-     * Add any implict redirect due to synthesized visual

-     */

-    if (compImplicitRedirect (pWin, pWin->parent))

-	compRedirectWindow (serverClient, pWin, CompositeRedirectAutomatic);

-

-    /*

-     * Allocate any necessary redirect pixmap

-     * (this actually should never be true; pWin is always unmapped)

-     */

-    compCheckRedirect (pWin);

-

-    /*

-     * Reset pixmap pointers as appropriate

-     */

-    if (pWin->parent && pWin->redirectDraw == RedirectDrawNone)

-	compSetPixmap (pWin, (*pScreen->GetWindowPixmap) (pWin->parent));

-    /*

-     * Call down to next function

-     */

-    if (pScreen->ReparentWindow)

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

-    cs->ReparentWindow = pScreen->ReparentWindow;

-    pScreen->ReparentWindow = compReparentWindow;

-    compCheckTree (pWin->drawable.pScreen);

-}

-

-void

-compCopyWindow (WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)

-{

-    ScreenPtr	    pScreen = pWin->drawable.pScreen;

-    CompScreenPtr   cs = GetCompScreen (pScreen);

-    int		    dx = 0, dy = 0;

-

-    if (pWin->redirectDraw != RedirectDrawNone)

-    {

-	PixmapPtr	pPixmap = (*pScreen->GetWindowPixmap) (pWin);

-	CompWindowPtr	cw = GetCompWindow (pWin);

-

-	assert (cw->oldx != COMP_ORIGIN_INVALID);

-	assert (cw->oldy != COMP_ORIGIN_INVALID);

-	if (cw->pOldPixmap)

-	{

-	    /*

-	     * Ok, the old bits are available in pOldPixmap and

-	     * need to be copied to pNewPixmap.

-	     */

-	    RegionRec	rgnDst;

-	    PixmapPtr	pPixmap = (*pScreen->GetWindowPixmap) (pWin);

-	    GCPtr	pGC;

-

-	    dx = ptOldOrg.x - pWin->drawable.x;

-	    dy = ptOldOrg.y - pWin->drawable.y;

-	    RegionTranslate(prgnSrc, -dx, -dy);

-

-	    RegionNull(&rgnDst);

-

-	    RegionIntersect(&rgnDst,

-			     &pWin->borderClip, prgnSrc);

-

-	    RegionTranslate(&rgnDst,

-			      -pPixmap->screen_x, -pPixmap->screen_y);

-

-	    dx = dx + pPixmap->screen_x - cw->oldx;

-	    dy = dy + pPixmap->screen_y - cw->oldy;

-	    pGC = GetScratchGC (pPixmap->drawable.depth, pScreen);

-	    if (pGC)

-	    {

-		BoxPtr	pBox = RegionRects (&rgnDst);

-		int	nBox = RegionNumRects (&rgnDst);

-

-		ValidateGC(&pPixmap->drawable, pGC);

-		while (nBox--)

-		{

-		    (void) (*pGC->ops->CopyArea) (&cw->pOldPixmap->drawable,

-						  &pPixmap->drawable,

-						  pGC,

-						  pBox->x1 + dx, pBox->y1 + dy,

-						  pBox->x2 - pBox->x1,

-						  pBox->y2 - pBox->y1,

-						  pBox->x1, pBox->y1);

-		    pBox++;

-		}

-		FreeScratchGC (pGC);

-	    }

-	    return;

-	}

-	dx = pPixmap->screen_x - cw->oldx;

-	dy = pPixmap->screen_y - cw->oldy;

-	ptOldOrg.x += dx;

-	ptOldOrg.y += dy;

-    }

-

-    pScreen->CopyWindow = cs->CopyWindow;

-    if (ptOldOrg.x != pWin->drawable.x || ptOldOrg.y != pWin->drawable.y)

-    {

-	if (dx || dy)

-	    RegionTranslate(prgnSrc, dx, dy);

-	(*pScreen->CopyWindow) (pWin, ptOldOrg, prgnSrc);

-	if (dx || dy)

-	    RegionTranslate(prgnSrc, -dx, -dy);

-    }

-    else

-    {

-	ptOldOrg.x -= dx;

-	ptOldOrg.y -= dy;

-	RegionTranslate(prgnSrc,

-			  pWin->drawable.x - ptOldOrg.x,

-			  pWin->drawable.y - ptOldOrg.y);

-	DamageDamageRegion(&pWin->drawable, prgnSrc);

-    }

-    cs->CopyWindow = pScreen->CopyWindow;

-    pScreen->CopyWindow = compCopyWindow;

-    compCheckTree (pWin->drawable.pScreen);

-}

-

-Bool

-compCreateWindow (WindowPtr pWin)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-    Bool		ret;

-

-    pScreen->CreateWindow = cs->CreateWindow;

-    ret = (*pScreen->CreateWindow) (pWin);

-    if (pWin->parent && ret)

-    {

-	CompSubwindowsPtr	csw = GetCompSubwindows (pWin->parent);

-        CompClientWindowPtr	ccw;

-

-	(*pScreen->SetWindowPixmap) (pWin, (*pScreen->GetWindowPixmap) (pWin->parent));

-	if (csw)

-	    for (ccw = csw->clients; ccw; ccw = ccw->next)

-		compRedirectWindow (clients[CLIENT_ID(ccw->id)],

-				    pWin, ccw->update);

-	if (compImplicitRedirect (pWin, pWin->parent))

-	    compRedirectWindow (serverClient, pWin, CompositeRedirectAutomatic);

-    }

-    cs->CreateWindow = pScreen->CreateWindow;

-    pScreen->CreateWindow = compCreateWindow;

-    compCheckTree (pWin->drawable.pScreen);

-    return ret;

-}

-

-Bool

-compDestroyWindow (WindowPtr pWin)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-    CompWindowPtr	cw;

-    CompSubwindowsPtr	csw;

-    Bool		ret;

-

-    pScreen->DestroyWindow = cs->DestroyWindow;

-    while ((cw = GetCompWindow (pWin)))

-	FreeResource (cw->clients->id, RT_NONE);

-    while ((csw = GetCompSubwindows (pWin)))

-	FreeResource (csw->clients->id, RT_NONE);

-

-    if (pWin->redirectDraw != RedirectDrawNone) {

-	PixmapPtr pPixmap = (*pScreen->GetWindowPixmap) (pWin);

-	compSetParentPixmap (pWin);

-	(*pScreen->DestroyPixmap) (pPixmap);

-    }

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

-    cs->DestroyWindow = pScreen->DestroyWindow;

-    pScreen->DestroyWindow = compDestroyWindow;

-/*    compCheckTree (pWin->drawable.pScreen); can't check -- tree isn't good*/

-    return ret;

-}

-

-void

-compSetRedirectBorderClip (WindowPtr pWin, RegionPtr pRegion)

-{

-    CompWindowPtr   cw = GetCompWindow (pWin);

-    RegionRec	    damage;

-

-    RegionNull(&damage);

-    /*

-     * Align old border clip with new border clip

-     */

-    RegionTranslate(&cw->borderClip,

-		      pWin->drawable.x - cw->borderClipX,

-		      pWin->drawable.y - cw->borderClipY);

-    /*

-     * Compute newly visible portion of window for repaint

-     */

-    RegionSubtract(&damage, pRegion, &cw->borderClip);

-    /*

-     * Report that as damaged so it will be redrawn

-     */

-    DamageDamageRegion(&pWin->drawable, &damage);

-    RegionUninit(&damage);

-    /*

-     * Save the new border clip region

-     */

-    RegionCopy(&cw->borderClip, pRegion);

-    cw->borderClipX = pWin->drawable.x;

-    cw->borderClipY = pWin->drawable.y;

-}

-

-RegionPtr

-compGetRedirectBorderClip (WindowPtr pWin)

-{

-    CompWindowPtr   cw = GetCompWindow (pWin);

-

-    return &cw->borderClip;

-}

-

-static VisualPtr

-compGetWindowVisual (WindowPtr pWin)

-{

-    ScreenPtr	    pScreen = pWin->drawable.pScreen;

-    VisualID	    vid = wVisual (pWin);

-    int		    i;

-

-    for (i = 0; i < pScreen->numVisuals; i++)

-	if (pScreen->visuals[i].vid == vid)

-	    return &pScreen->visuals[i];

-    return 0;

-}

-

-PictFormatPtr

-compWindowFormat (WindowPtr pWin)

-{

-    ScreenPtr	pScreen = pWin->drawable.pScreen;

-

-    return PictureMatchVisual (pScreen, pWin->drawable.depth,

-			       compGetWindowVisual (pWin));

-}

-

-static void

-compWindowUpdateAutomatic (WindowPtr pWin)

-{

-    CompWindowPtr   cw = GetCompWindow (pWin);

-    ScreenPtr	    pScreen = pWin->drawable.pScreen;

-    WindowPtr	    pParent = pWin->parent;

-    PixmapPtr	    pSrcPixmap = (*pScreen->GetWindowPixmap) (pWin);

-    PictFormatPtr   pSrcFormat = compWindowFormat (pWin);

-    PictFormatPtr   pDstFormat = compWindowFormat (pWin->parent);

-    int		    error;

-    RegionPtr	    pRegion = DamageRegion (cw->damage);

-    PicturePtr	    pSrcPicture = CreatePicture (0, &pSrcPixmap->drawable,

-						 pSrcFormat,

-						 0, 0,

-						 serverClient,

-						 &error);

-    XID		    subwindowMode = IncludeInferiors;

-    PicturePtr	    pDstPicture = CreatePicture (0, &pParent->drawable,

-						 pDstFormat,

-						 CPSubwindowMode,

-						 &subwindowMode,

-						 serverClient,

-						 &error);

-

-    /*

-     * First move the region from window to screen coordinates

-     */

-    RegionTranslate(pRegion,

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

-

-    /*

-     * Clip against the "real" border clip

-     */

-    RegionIntersect(pRegion, pRegion, &cw->borderClip);

-

-    /*

-     * Now translate from screen to dest coordinates

-     */

-    RegionTranslate(pRegion,

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

-

-    /*

-     * Clip the picture

-     */

-    SetPictureClipRegion (pDstPicture, 0, 0, pRegion);

-

-    /*

-     * And paint

-     */

-    CompositePicture (PictOpSrc,

-		      pSrcPicture,

-		      0,

-		      pDstPicture,

-		      0, 0, /* src_x, src_y */

-		      0, 0, /* msk_x, msk_y */

-		      pSrcPixmap->screen_x - pParent->drawable.x,

-		      pSrcPixmap->screen_y - pParent->drawable.y,

-		      pSrcPixmap->drawable.width,

-		      pSrcPixmap->drawable.height);

-    FreePicture (pSrcPicture, 0);

-    FreePicture (pDstPicture, 0);

-    /*

-     * Empty the damage region.  This has the nice effect of

-     * rendering the translations above harmless

-     */

-    DamageEmpty (cw->damage);

-}

-

-static void

-compPaintWindowToParent (WindowPtr pWin)

-{

-    compPaintChildrenToWindow (pWin);

-

-    if (pWin->redirectDraw != RedirectDrawNone)

-    {

-	CompWindowPtr	cw = GetCompWindow(pWin);

-

-	if (cw->damaged)

-	{

-	    compWindowUpdateAutomatic (pWin);

-	    cw->damaged = FALSE;

-	}

-    }

-}

-

-void

-compPaintChildrenToWindow (WindowPtr pWin)

-{

-    WindowPtr pChild;

-

-    if (!pWin->damagedDescendants)

-	return;

-

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

-	compPaintWindowToParent (pChild);

-

-    pWin->damagedDescendants = FALSE;

-}

-

-WindowPtr

-CompositeRealChildHead (WindowPtr pWin)

-{

-    WindowPtr pChild, pChildBefore;

-    CompScreenPtr cs;

-

-    if (!pWin->parent &&

-	(screenIsSaved == SCREEN_SAVER_ON) &&

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

-

-	/* First child is the screen saver; see if next child is the overlay */

-	pChildBefore = pWin->firstChild;

-	pChild = pChildBefore->nextSib;

-

-    } else {

-	pChildBefore = NullWindow;

-	pChild = pWin->firstChild;

-    }

-

-    if (!pChild) {

-	return NullWindow;

-    }

-

-    cs = GetCompScreen(pWin->drawable.pScreen);

-    if (pChild == cs->pOverlayWin) {

-	return pChild;

-    } else {

-	return pChildBefore;

-    }

-}

-

-int

-compConfigNotify(WindowPtr pWin, int x, int y, int w, int h,

-		 int bw, WindowPtr pSib)

-{

-    ScreenPtr		pScreen = pWin->drawable.pScreen;

-    CompScreenPtr	cs = GetCompScreen (pScreen);

-    Bool                ret = 0;

-    WindowPtr		pParent = pWin->parent;

-    int			draw_x, draw_y;

-    Bool alloc_ret;

-

-    if (cs->ConfigNotify)

-    {

-	pScreen->ConfigNotify = cs->ConfigNotify;

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

-	cs->ConfigNotify = pScreen->ConfigNotify;

-	pScreen->ConfigNotify = compConfigNotify;

-

-	if (ret)

-	    return ret;

-    }

-

-    if (pWin->redirectDraw == RedirectDrawNone)

-	return Success;

-

-    compCheckTree (pScreen);

-

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

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

-    alloc_ret = compReallocPixmap (pWin, draw_x, draw_y, w, h, bw);

-

-    if (alloc_ret == FALSE)

-	return BadAlloc;

-    return Success;

-}

+/*
+ * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
+ *
+ * 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 © 2003 Keith Packard
+ *
+ * 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, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "compint.h"
+
+#ifdef PANORAMIX
+#include "panoramiXsrv.h"
+#endif
+
+#ifdef COMPOSITE_DEBUG
+static int
+compCheckWindow (WindowPtr pWin, pointer data)
+{
+    ScreenPtr	pScreen = pWin->drawable.pScreen;
+    PixmapPtr	pWinPixmap = (*pScreen->GetWindowPixmap) (pWin);
+    PixmapPtr	pParentPixmap = pWin->parent ? (*pScreen->GetWindowPixmap) (pWin->parent) : 0;
+    PixmapPtr	pScreenPixmap = (*pScreen->GetScreenPixmap) (pScreen);
+
+    if (!pWin->parent)
+    {
+	assert (pWin->redirectDraw == RedirectDrawNone);
+	assert (pWinPixmap == pScreenPixmap);
+    }
+    else if (pWin->redirectDraw != RedirectDrawNone)
+    {
+	assert (pWinPixmap != pParentPixmap);
+	assert (pWinPixmap != pScreenPixmap);
+    }
+    else
+    {
+	assert (pWinPixmap == pParentPixmap);
+    }
+    assert (0 < pWinPixmap->refcnt && pWinPixmap->refcnt < 3);
+    assert (0 < pScreenPixmap->refcnt && pScreenPixmap->refcnt < 3);
+    if (pParentPixmap)
+	assert (0 <= pParentPixmap->refcnt && pParentPixmap->refcnt < 3);
+    return WT_WALKCHILDREN;
+}
+
+void
+compCheckTree (ScreenPtr pScreen)
+{
+    WalkTree (pScreen, compCheckWindow, 0);
+}
+#endif
+
+typedef struct _compPixmapVisit {
+    WindowPtr	pWindow;
+    PixmapPtr	pPixmap;
+} CompPixmapVisitRec, *CompPixmapVisitPtr;
+
+static Bool
+compRepaintBorder (ClientPtr pClient, pointer closure)
+{
+    WindowPtr pWindow;
+    int rc = dixLookupWindow(&pWindow, (XID)(intptr_t)closure, pClient, DixWriteAccess);
+
+    if (rc == Success) {
+	RegionRec exposed;
+
+	RegionNull(&exposed);
+	RegionSubtract(&exposed, &pWindow->borderClip, &pWindow->winSize);
+	miPaintWindow(pWindow, &exposed, PW_BORDER);
+	RegionUninit(&exposed);
+    }
+    return TRUE;
+}
+
+static int
+compSetPixmapVisitWindow (WindowPtr pWindow, pointer data)
+{
+    CompPixmapVisitPtr	pVisit = (CompPixmapVisitPtr) data;
+    ScreenPtr		pScreen = pWindow->drawable.pScreen;
+
+    if (pWindow != pVisit->pWindow && pWindow->redirectDraw != RedirectDrawNone)
+	return WT_DONTWALKCHILDREN;
+    (*pScreen->SetWindowPixmap) (pWindow, pVisit->pPixmap);
+    /*
+     * Recompute winSize and borderSize.  This is duplicate effort
+     * when resizing pixmaps, but necessary when changing redirection.
+     * Might be nice to fix this.
+     */
+    SetWinSize (pWindow);
+    SetBorderSize (pWindow);
+    if (HasBorder (pWindow))
+	QueueWorkProc (compRepaintBorder, serverClient,
+		       (pointer)(intptr_t) pWindow->drawable.id);
+    return WT_WALKCHILDREN;
+}
+
+void
+compSetPixmap (WindowPtr pWindow, PixmapPtr pPixmap)
+{
+    CompPixmapVisitRec	visitRec;
+
+    visitRec.pWindow = pWindow;
+    visitRec.pPixmap = pPixmap;
+    TraverseTree (pWindow, compSetPixmapVisitWindow, (pointer) &visitRec);
+    compCheckTree (pWindow->drawable.pScreen);
+}
+
+Bool
+compCheckRedirect (WindowPtr pWin)
+{
+    CompWindowPtr   cw = GetCompWindow (pWin);
+    CompScreenPtr   cs = GetCompScreen(pWin->drawable.pScreen);
+    Bool	    should;
+
+    should = pWin->realized && (pWin->drawable.class != InputOnly) &&
+	     (cw != NULL) && (pWin->parent != NULL);
+
+    /* Never redirect the overlay window */
+    if (cs->pOverlayWin != NULL) {
+	if (pWin == cs->pOverlayWin) {
+	    should = FALSE;
+	}
+    }
+
+    if (should != (pWin->redirectDraw != RedirectDrawNone))
+    {
+	if (should)
+	    return compAllocPixmap (pWin);
+	else {
+	    ScreenPtr pScreen = pWin->drawable.pScreen;
+	    PixmapPtr pPixmap = (*pScreen->GetWindowPixmap) (pWin);
+	    compSetParentPixmap (pWin);
+	    compRestoreWindow (pWin, pPixmap);
+	    (*pScreen->DestroyPixmap) (pPixmap);
+	}
+    } else if (should) {
+	if (cw->update == CompositeRedirectAutomatic)
+	    pWin->redirectDraw = RedirectDrawAutomatic;
+	else
+	    pWin->redirectDraw = RedirectDrawManual;
+    }
+    return TRUE;
+}
+
+static int
+updateOverlayWindow(ScreenPtr pScreen)
+{
+	CompScreenPtr cs;
+	WindowPtr pWin; /* overlay window */
+	XID vlist[2];
+	int w = pScreen->width;
+	int h = pScreen->height;
+
+#ifdef PANORAMIX
+	if (!noPanoramiXExtension)
+	{
+	    w = PanoramiXPixWidth;
+	    h = PanoramiXPixHeight;
+	}
+#endif
+
+	cs = GetCompScreen(pScreen);
+	if ((pWin = cs->pOverlayWin) != NULL) {
+		if ((pWin->drawable.width == w) &&
+			(pWin->drawable.height == h))
+			return Success;
+
+		/* Let's resize the overlay window. */
+		vlist[0] = w;
+		vlist[1] = h;
+		return ConfigureWindow(pWin, CWWidth | CWHeight, vlist, wClient(pWin));
+	}
+
+	/* Let's be on the safe side and not assume an overlay window is always allocated. */
+	return Success;
+}
+
+Bool
+compPositionWindow (WindowPtr pWin, int x, int y)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    CompScreenPtr   cs = GetCompScreen (pScreen);
+    Bool	    ret = TRUE;
+
+    pScreen->PositionWindow = cs->PositionWindow;
+    /*
+     * "Shouldn't need this as all possible places should be wrapped
+     *
+    compCheckRedirect (pWin);
+     */
+#ifdef COMPOSITE_DEBUG
+    if ((pWin->redirectDraw != RedirectDrawNone) !=
+	(pWin->viewable && (GetCompWindow(pWin) != NULL)))
+	OsAbort ();
+#endif
+    if (pWin->redirectDraw != RedirectDrawNone)
+    {
+	PixmapPtr   pPixmap = (*pScreen->GetWindowPixmap) (pWin);
+	int	    bw = wBorderWidth (pWin);
+	int	    nx = pWin->drawable.x - bw;
+	int	    ny = pWin->drawable.y - bw;
+
+	if (pPixmap->screen_x != nx || pPixmap->screen_y != ny)
+	{
+	    pPixmap->screen_x = nx;
+	    pPixmap->screen_y = ny;
+	    pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+	}
+    }
+
+    if (!(*pScreen->PositionWindow) (pWin, x, y))
+	ret = FALSE;
+    cs->PositionWindow = pScreen->PositionWindow;
+    pScreen->PositionWindow = compPositionWindow;
+    compCheckTree (pWin->drawable.pScreen);
+    if (updateOverlayWindow(pScreen) != Success)
+	ret = FALSE;
+    return ret;
+}
+
+Bool
+compRealizeWindow (WindowPtr pWin)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    CompScreenPtr   cs = GetCompScreen (pScreen);
+    Bool	    ret = TRUE;
+
+    pScreen->RealizeWindow = cs->RealizeWindow;
+    compCheckRedirect (pWin);
+    if (!(*pScreen->RealizeWindow) (pWin))
+	ret = FALSE;
+    cs->RealizeWindow = pScreen->RealizeWindow;
+    pScreen->RealizeWindow = compRealizeWindow;
+    compCheckTree (pWin->drawable.pScreen);
+    return ret;
+}
+
+Bool
+compUnrealizeWindow (WindowPtr pWin)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    CompScreenPtr   cs = GetCompScreen (pScreen);
+    Bool	    ret = TRUE;
+
+    pScreen->UnrealizeWindow = cs->UnrealizeWindow;
+    compCheckRedirect (pWin);
+    if (!(*pScreen->UnrealizeWindow) (pWin))
+	ret = FALSE;
+    cs->UnrealizeWindow = pScreen->UnrealizeWindow;
+    pScreen->UnrealizeWindow = compUnrealizeWindow;
+    compCheckTree (pWin->drawable.pScreen);
+    return ret;
+}
+
+/*
+ * Called after the borderClip for the window has settled down
+ * We use this to make sure our extra borderClip has the right origin
+ */
+
+void
+compClipNotify (WindowPtr pWin, int dx, int dy)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+    CompWindowPtr	cw = GetCompWindow (pWin);
+
+    if (cw)
+    {
+	if (cw->borderClipX != pWin->drawable.x ||
+	    cw->borderClipY != pWin->drawable.y)
+	{
+	    RegionTranslate(&cw->borderClip,
+			      pWin->drawable.x - cw->borderClipX,
+			      pWin->drawable.y - cw->borderClipY);
+	    cw->borderClipX = pWin->drawable.x;
+	    cw->borderClipY = pWin->drawable.y;
+	}
+    }
+    if (cs->ClipNotify)
+    {
+	pScreen->ClipNotify = cs->ClipNotify;
+	(*pScreen->ClipNotify) (pWin, dx, dy);
+	cs->ClipNotify = pScreen->ClipNotify;
+	pScreen->ClipNotify = compClipNotify;
+    }
+}
+
+/*
+ * Returns TRUE if the window needs server-provided automatic redirect,
+ * which is true if the child and parent aren't both regular or ARGB visuals
+ */
+
+static Bool
+compIsAlternateVisual (ScreenPtr    pScreen,
+		       XID	    visual)
+{
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+    int			i;
+
+    for (i = 0; i < cs->numAlternateVisuals; i++)
+	if (cs->alternateVisuals[i] == visual)
+	    return TRUE;
+    return FALSE;
+}
+
+static Bool
+compImplicitRedirect (WindowPtr pWin, WindowPtr pParent)
+{
+    if (pParent)
+    {
+	ScreenPtr	pScreen = pWin->drawable.pScreen;
+	XID		winVisual = wVisual (pWin);
+	XID		parentVisual = wVisual (pParent);
+
+	if (winVisual != parentVisual &&
+	    (compIsAlternateVisual (pScreen, winVisual) ||
+	     compIsAlternateVisual (pScreen, parentVisual)))
+	    return TRUE;
+    }
+    return FALSE;
+}
+
+static void compFreeOldPixmap(WindowPtr pWin)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    if (pWin->redirectDraw != RedirectDrawNone)
+    {
+	CompWindowPtr	cw = GetCompWindow (pWin);
+	if (cw->pOldPixmap)
+	{
+	    (*pScreen->DestroyPixmap) (cw->pOldPixmap);
+	    cw->pOldPixmap = NullPixmap;
+	}
+    }
+}
+void
+compMoveWindow (WindowPtr pWin, int x, int y, WindowPtr pSib, VTKind kind)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+
+    pScreen->MoveWindow = cs->MoveWindow;
+    (*pScreen->MoveWindow) (pWin, x, y, pSib, kind);
+    cs->MoveWindow = pScreen->MoveWindow;
+    pScreen->MoveWindow = compMoveWindow;
+
+    compFreeOldPixmap(pWin);
+    compCheckTree (pScreen);
+}
+
+void
+compResizeWindow (WindowPtr pWin, int x, int y,
+		  unsigned int w, unsigned int h, WindowPtr pSib)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+
+    pScreen->ResizeWindow = cs->ResizeWindow;
+    (*pScreen->ResizeWindow) (pWin, x, y, w, h, pSib);
+    cs->ResizeWindow = pScreen->ResizeWindow;
+    pScreen->ResizeWindow = compResizeWindow;
+
+    compFreeOldPixmap(pWin);
+    compCheckTree (pWin->drawable.pScreen);
+}
+
+void
+compChangeBorderWidth (WindowPtr pWin, unsigned int bw)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+
+    pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;
+    (*pScreen->ChangeBorderWidth) (pWin, bw);
+    cs->ChangeBorderWidth = pScreen->ChangeBorderWidth;
+    pScreen->ChangeBorderWidth = compChangeBorderWidth;
+
+    compFreeOldPixmap(pWin);
+    compCheckTree (pWin->drawable.pScreen);
+}
+
+void
+compReparentWindow (WindowPtr pWin, WindowPtr pPriorParent)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+
+    pScreen->ReparentWindow = cs->ReparentWindow;
+    /*
+     * Remove any implicit redirect due to synthesized visual
+     */
+    if (compImplicitRedirect (pWin, pPriorParent))
+	compUnredirectWindow (serverClient, pWin, CompositeRedirectAutomatic);
+    /*
+     * Handle subwindows redirection
+     */
+    compUnredirectOneSubwindow (pPriorParent, pWin);
+    compRedirectOneSubwindow (pWin->parent, pWin);
+    /*
+     * Add any implict redirect due to synthesized visual
+     */
+    if (compImplicitRedirect (pWin, pWin->parent))
+	compRedirectWindow (serverClient, pWin, CompositeRedirectAutomatic);
+
+    /*
+     * Allocate any necessary redirect pixmap
+     * (this actually should never be true; pWin is always unmapped)
+     */
+    compCheckRedirect (pWin);
+
+    /*
+     * Reset pixmap pointers as appropriate
+     */
+    if (pWin->parent && pWin->redirectDraw == RedirectDrawNone)
+	compSetPixmap (pWin, (*pScreen->GetWindowPixmap) (pWin->parent));
+    /*
+     * Call down to next function
+     */
+    if (pScreen->ReparentWindow)
+	(*pScreen->ReparentWindow) (pWin, pPriorParent);
+    cs->ReparentWindow = pScreen->ReparentWindow;
+    pScreen->ReparentWindow = compReparentWindow;
+    compCheckTree (pWin->drawable.pScreen);
+}
+
+void
+compCopyWindow (WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    CompScreenPtr   cs = GetCompScreen (pScreen);
+    int		    dx = 0, dy = 0;
+
+    if (pWin->redirectDraw != RedirectDrawNone)
+    {
+	PixmapPtr	pPixmap = (*pScreen->GetWindowPixmap) (pWin);
+	CompWindowPtr	cw = GetCompWindow (pWin);
+
+	assert (cw->oldx != COMP_ORIGIN_INVALID);
+	assert (cw->oldy != COMP_ORIGIN_INVALID);
+	if (cw->pOldPixmap)
+	{
+	    /*
+	     * Ok, the old bits are available in pOldPixmap and
+	     * need to be copied to pNewPixmap.
+	     */
+	    RegionRec	rgnDst;
+	    PixmapPtr	pPixmap = (*pScreen->GetWindowPixmap) (pWin);
+	    GCPtr	pGC;
+
+	    dx = ptOldOrg.x - pWin->drawable.x;
+	    dy = ptOldOrg.y - pWin->drawable.y;
+	    RegionTranslate(prgnSrc, -dx, -dy);
+
+	    RegionNull(&rgnDst);
+
+	    RegionIntersect(&rgnDst,
+			     &pWin->borderClip, prgnSrc);
+
+	    RegionTranslate(&rgnDst,
+			      -pPixmap->screen_x, -pPixmap->screen_y);
+
+	    dx = dx + pPixmap->screen_x - cw->oldx;
+	    dy = dy + pPixmap->screen_y - cw->oldy;
+	    pGC = GetScratchGC (pPixmap->drawable.depth, pScreen);
+	    if (pGC)
+	    {
+		BoxPtr	pBox = RegionRects (&rgnDst);
+		int	nBox = RegionNumRects (&rgnDst);
+
+		ValidateGC(&pPixmap->drawable, pGC);
+		while (nBox--)
+		{
+		    (void) (*pGC->ops->CopyArea) (&cw->pOldPixmap->drawable,
+						  &pPixmap->drawable,
+						  pGC,
+						  pBox->x1 + dx, pBox->y1 + dy,
+						  pBox->x2 - pBox->x1,
+						  pBox->y2 - pBox->y1,
+						  pBox->x1, pBox->y1);
+		    pBox++;
+		}
+		FreeScratchGC (pGC);
+	    }
+	    return;
+	}
+	dx = pPixmap->screen_x - cw->oldx;
+	dy = pPixmap->screen_y - cw->oldy;
+	ptOldOrg.x += dx;
+	ptOldOrg.y += dy;
+    }
+
+    pScreen->CopyWindow = cs->CopyWindow;
+    if (ptOldOrg.x != pWin->drawable.x || ptOldOrg.y != pWin->drawable.y)
+    {
+	if (dx || dy)
+	    RegionTranslate(prgnSrc, dx, dy);
+	(*pScreen->CopyWindow) (pWin, ptOldOrg, prgnSrc);
+	if (dx || dy)
+	    RegionTranslate(prgnSrc, -dx, -dy);
+    }
+    else
+    {
+	ptOldOrg.x -= dx;
+	ptOldOrg.y -= dy;
+	RegionTranslate(prgnSrc,
+			  pWin->drawable.x - ptOldOrg.x,
+			  pWin->drawable.y - ptOldOrg.y);
+	DamageDamageRegion(&pWin->drawable, prgnSrc);
+    }
+    cs->CopyWindow = pScreen->CopyWindow;
+    pScreen->CopyWindow = compCopyWindow;
+    compCheckTree (pWin->drawable.pScreen);
+}
+
+Bool
+compCreateWindow (WindowPtr pWin)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+    Bool		ret;
+
+    pScreen->CreateWindow = cs->CreateWindow;
+    ret = (*pScreen->CreateWindow) (pWin);
+    if (pWin->parent && ret)
+    {
+	CompSubwindowsPtr	csw = GetCompSubwindows (pWin->parent);
+        CompClientWindowPtr	ccw;
+
+	(*pScreen->SetWindowPixmap) (pWin, (*pScreen->GetWindowPixmap) (pWin->parent));
+	if (csw)
+	    for (ccw = csw->clients; ccw; ccw = ccw->next)
+		compRedirectWindow (clients[CLIENT_ID(ccw->id)],
+				    pWin, ccw->update);
+	if (compImplicitRedirect (pWin, pWin->parent))
+	    compRedirectWindow (serverClient, pWin, CompositeRedirectAutomatic);
+    }
+    cs->CreateWindow = pScreen->CreateWindow;
+    pScreen->CreateWindow = compCreateWindow;
+    compCheckTree (pWin->drawable.pScreen);
+    return ret;
+}
+
+Bool
+compDestroyWindow (WindowPtr pWin)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+    CompWindowPtr	cw;
+    CompSubwindowsPtr	csw;
+    Bool		ret;
+
+    pScreen->DestroyWindow = cs->DestroyWindow;
+    while ((cw = GetCompWindow (pWin)))
+	FreeResource (cw->clients->id, RT_NONE);
+    while ((csw = GetCompSubwindows (pWin)))
+	FreeResource (csw->clients->id, RT_NONE);
+
+    if (pWin->redirectDraw != RedirectDrawNone) {
+	PixmapPtr pPixmap = (*pScreen->GetWindowPixmap) (pWin);
+	compSetParentPixmap (pWin);
+	(*pScreen->DestroyPixmap) (pPixmap);
+    }
+    ret = (*pScreen->DestroyWindow) (pWin);
+    cs->DestroyWindow = pScreen->DestroyWindow;
+    pScreen->DestroyWindow = compDestroyWindow;
+/*    compCheckTree (pWin->drawable.pScreen); can't check -- tree isn't good*/
+    return ret;
+}
+
+void
+compSetRedirectBorderClip (WindowPtr pWin, RegionPtr pRegion)
+{
+    CompWindowPtr   cw = GetCompWindow (pWin);
+    RegionRec	    damage;
+
+    RegionNull(&damage);
+    /*
+     * Align old border clip with new border clip
+     */
+    RegionTranslate(&cw->borderClip,
+		      pWin->drawable.x - cw->borderClipX,
+		      pWin->drawable.y - cw->borderClipY);
+    /*
+     * Compute newly visible portion of window for repaint
+     */
+    RegionSubtract(&damage, pRegion, &cw->borderClip);
+    /*
+     * Report that as damaged so it will be redrawn
+     */
+    DamageDamageRegion(&pWin->drawable, &damage);
+    RegionUninit(&damage);
+    /*
+     * Save the new border clip region
+     */
+    RegionCopy(&cw->borderClip, pRegion);
+    cw->borderClipX = pWin->drawable.x;
+    cw->borderClipY = pWin->drawable.y;
+}
+
+RegionPtr
+compGetRedirectBorderClip (WindowPtr pWin)
+{
+    CompWindowPtr   cw = GetCompWindow (pWin);
+
+    return &cw->borderClip;
+}
+
+static VisualPtr
+compGetWindowVisual (WindowPtr pWin)
+{
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    VisualID	    vid = wVisual (pWin);
+    int		    i;
+
+    for (i = 0; i < pScreen->numVisuals; i++)
+	if (pScreen->visuals[i].vid == vid)
+	    return &pScreen->visuals[i];
+    return 0;
+}
+
+PictFormatPtr
+compWindowFormat (WindowPtr pWin)
+{
+    ScreenPtr	pScreen = pWin->drawable.pScreen;
+
+    return PictureMatchVisual (pScreen, pWin->drawable.depth,
+			       compGetWindowVisual (pWin));
+}
+
+static void
+compWindowUpdateAutomatic (WindowPtr pWin)
+{
+    CompWindowPtr   cw = GetCompWindow (pWin);
+    ScreenPtr	    pScreen = pWin->drawable.pScreen;
+    WindowPtr	    pParent = pWin->parent;
+    PixmapPtr	    pSrcPixmap = (*pScreen->GetWindowPixmap) (pWin);
+    PictFormatPtr   pSrcFormat = compWindowFormat (pWin);
+    PictFormatPtr   pDstFormat = compWindowFormat (pWin->parent);
+    int		    error;
+    RegionPtr	    pRegion = DamageRegion (cw->damage);
+    PicturePtr	    pSrcPicture = CreatePicture (0, &pSrcPixmap->drawable,
+						 pSrcFormat,
+						 0, 0,
+						 serverClient,
+						 &error);
+    XID		    subwindowMode = IncludeInferiors;
+    PicturePtr	    pDstPicture = CreatePicture (0, &pParent->drawable,
+						 pDstFormat,
+						 CPSubwindowMode,
+						 &subwindowMode,
+						 serverClient,
+						 &error);
+
+    /*
+     * First move the region from window to screen coordinates
+     */
+    RegionTranslate(pRegion,
+		      pWin->drawable.x, pWin->drawable.y);
+
+    /*
+     * Clip against the "real" border clip
+     */
+    RegionIntersect(pRegion, pRegion, &cw->borderClip);
+
+    /*
+     * Now translate from screen to dest coordinates
+     */
+    RegionTranslate(pRegion,
+		      -pParent->drawable.x, -pParent->drawable.y);
+
+    /*
+     * Clip the picture
+     */
+    SetPictureClipRegion (pDstPicture, 0, 0, pRegion);
+
+    /*
+     * And paint
+     */
+    CompositePicture (PictOpSrc,
+		      pSrcPicture,
+		      0,
+		      pDstPicture,
+		      0, 0, /* src_x, src_y */
+		      0, 0, /* msk_x, msk_y */
+		      pSrcPixmap->screen_x - pParent->drawable.x,
+		      pSrcPixmap->screen_y - pParent->drawable.y,
+		      pSrcPixmap->drawable.width,
+		      pSrcPixmap->drawable.height);
+    FreePicture (pSrcPicture, 0);
+    FreePicture (pDstPicture, 0);
+    /*
+     * Empty the damage region.  This has the nice effect of
+     * rendering the translations above harmless
+     */
+    DamageEmpty (cw->damage);
+}
+
+static void
+compPaintWindowToParent (WindowPtr pWin)
+{
+    compPaintChildrenToWindow (pWin);
+
+    if (pWin->redirectDraw != RedirectDrawNone)
+    {
+	CompWindowPtr	cw = GetCompWindow(pWin);
+
+	if (cw->damaged)
+	{
+	    compWindowUpdateAutomatic (pWin);
+	    cw->damaged = FALSE;
+	}
+    }
+}
+
+void
+compPaintChildrenToWindow (WindowPtr pWin)
+{
+    WindowPtr pChild;
+
+    if (!pWin->damagedDescendants)
+	return;
+
+    for (pChild = pWin->lastChild; pChild; pChild = pChild->prevSib)
+	compPaintWindowToParent (pChild);
+
+    pWin->damagedDescendants = FALSE;
+}
+
+WindowPtr
+CompositeRealChildHead (WindowPtr pWin)
+{
+    WindowPtr pChild, pChildBefore;
+    CompScreenPtr cs;
+
+    if (!pWin->parent &&
+	(screenIsSaved == SCREEN_SAVER_ON) &&
+	(HasSaverWindow (pWin->drawable.pScreen))) {
+
+	/* First child is the screen saver; see if next child is the overlay */
+	pChildBefore = pWin->firstChild;
+	pChild = pChildBefore->nextSib;
+
+    } else {
+	pChildBefore = NullWindow;
+	pChild = pWin->firstChild;
+    }
+
+    if (!pChild) {
+	return NullWindow;
+    }
+
+    cs = GetCompScreen(pWin->drawable.pScreen);
+    if (pChild == cs->pOverlayWin) {
+	return pChild;
+    } else {
+	return pChildBefore;
+    }
+}
+
+int
+compConfigNotify(WindowPtr pWin, int x, int y, int w, int h,
+		 int bw, WindowPtr pSib)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    CompScreenPtr	cs = GetCompScreen (pScreen);
+    Bool                ret = 0;
+    WindowPtr		pParent = pWin->parent;
+    int			draw_x, draw_y;
+    Bool alloc_ret;
+
+    if (cs->ConfigNotify)
+    {
+	pScreen->ConfigNotify = cs->ConfigNotify;
+	ret = (*pScreen->ConfigNotify)(pWin, x, y, w, h, bw, pSib);
+	cs->ConfigNotify = pScreen->ConfigNotify;
+	pScreen->ConfigNotify = compConfigNotify;
+
+	if (ret)
+	    return ret;
+    }
+
+    if (pWin->redirectDraw == RedirectDrawNone)
+	return Success;
+
+    compCheckTree (pScreen);
+
+    draw_x = pParent->drawable.x + x + bw;
+    draw_y = pParent->drawable.y + y + bw;
+    alloc_ret = compReallocPixmap (pWin, draw_x, draw_y, w, h, bw);
+
+    if (alloc_ret == FALSE)
+	return BadAlloc;
+    return Success;
+}