xserver git update 11/6/2010

1 files changed, 743 insertions, 824 deletions

diff --git a/xorg-server/composite/compwindow.c b/xorg-server/composite/compwindow.c
index f2f6ea3cd..82f9b4cfd 100644
--- a/xorg-server/composite/compwindow.c
+++ b/xorg-server/composite/compwindow.c
@@ -1,824 +1,743 @@
-/*
- * Copyright © 2006 Sun Microsystems, Inc.  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 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;
-
-	REGION_NULL(pScreen, &exposed);
-	REGION_SUBTRACT(pScreen, &exposed, &pWindow->borderClip, &pWindow->winSize);
-	miPaintWindow(pWindow, &exposed, PW_BORDER);
-	REGION_UNINIT(pScreen, &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
-	    compFreePixmap (pWin);
-    }
-    return TRUE;
-}
-
-static int
-updateOverlayWindow(ScreenPtr pScreen)
-{
-	CompScreenPtr cs;
-	WindowPtr pWin; /* overlay window */
-	XID vlist[2];
-
-	cs = GetCompScreen(pScreen);
-	if ((pWin = cs->pOverlayWin) != NULL) {
-		if ((pWin->drawable.width == pScreen->width) &&
-			(pWin->drawable.height == pScreen->height))
-			return Success;
-
-		/* Let's resize the overlay window. */
-		vlist[0] = pScreen->width;
-		vlist[1] = pScreen->height;
-		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)
-	{
-	    REGION_TRANSLATE (pScreen, &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;
-}
-
-void
-compMoveWindow (WindowPtr pWin, int x, int y, WindowPtr pSib, VTKind kind)
-{
-    ScreenPtr		pScreen = pWin->drawable.pScreen;
-    CompScreenPtr	cs = GetCompScreen (pScreen);
-
-    compCheckTree (pScreen);
-    if (pWin->redirectDraw != RedirectDrawNone)
-    {
-	WindowPtr		pParent;
-	int			draw_x, draw_y;
-	unsigned int		w, h, bw;
-
-	/* if this is a root window, can't be moved */
-	if (!(pParent = pWin->parent))
-	   return;
-
-	bw = wBorderWidth (pWin);
-	draw_x = pParent->drawable.x + x + (int)bw;
-	draw_y = pParent->drawable.y + y + (int)bw;
-	w = pWin->drawable.width;
-	h = pWin->drawable.height;
-	compReallocPixmap (pWin, draw_x, draw_y, w, h, bw);
-    }
-    compCheckTree (pScreen);
-
-    pScreen->MoveWindow = cs->MoveWindow;
-    (*pScreen->MoveWindow) (pWin, x, y, pSib, kind);
-    cs->MoveWindow = pScreen->MoveWindow;
-    pScreen->MoveWindow = compMoveWindow;
-
-    if (pWin->redirectDraw != RedirectDrawNone)
-    {
-	CompWindowPtr	cw = GetCompWindow (pWin);
-	if (cw->pOldPixmap)
-	{
-	    (*pScreen->DestroyPixmap) (cw->pOldPixmap);
-	    cw->pOldPixmap = NullPixmap;
-	}
-    }
-
-    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);
-
-    compCheckTree (pScreen);
-    if (pWin->redirectDraw != RedirectDrawNone)
-    {
-	WindowPtr		pParent;
-	int			draw_x, draw_y;
-	unsigned int		bw;
-
-	/* if this is a root window, can't be moved */
-	if (!(pParent = pWin->parent))
-	   return;
-
-	bw = wBorderWidth (pWin);
-	draw_x = pParent->drawable.x + x + (int)bw;
-	draw_y = pParent->drawable.y + y + (int)bw;
-	compReallocPixmap (pWin, draw_x, draw_y, w, h, bw);
-    }
-    compCheckTree (pScreen);
-
-    pScreen->ResizeWindow = cs->ResizeWindow;
-    (*pScreen->ResizeWindow) (pWin, x, y, w, h, pSib);
-    cs->ResizeWindow = pScreen->ResizeWindow;
-    pScreen->ResizeWindow = compResizeWindow;
-    if (pWin->redirectDraw != RedirectDrawNone)
-    {
-	CompWindowPtr	cw = GetCompWindow (pWin);
-	if (cw->pOldPixmap)
-	{
-	    (*pScreen->DestroyPixmap) (cw->pOldPixmap);
-	    cw->pOldPixmap = NullPixmap;
-	}
-    }
-    compCheckTree (pWin->drawable.pScreen);
-}
-
-void
-compChangeBorderWidth (WindowPtr pWin, unsigned int bw)
-{
-    ScreenPtr		pScreen = pWin->drawable.pScreen;
-    CompScreenPtr	cs = GetCompScreen (pScreen);
-
-    compCheckTree (pScreen);
-    if (pWin->redirectDraw != RedirectDrawNone)
-    {
-	WindowPtr		pParent;
-	int			draw_x, draw_y;
-	unsigned int		w, h;
-
-	/* if this is a root window, can't be moved */
-	if (!(pParent = pWin->parent))
-	   return;
-
-	draw_x = pWin->drawable.x;
-	draw_y = pWin->drawable.y;
-	w = pWin->drawable.width;
-	h = pWin->drawable.height;
-	compReallocPixmap (pWin, draw_x, draw_y, w, h, bw);
-    }
-    compCheckTree (pScreen);
-
-    pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;
-    (*pScreen->ChangeBorderWidth) (pWin, bw);
-    cs->ChangeBorderWidth = pScreen->ChangeBorderWidth;
-    pScreen->ChangeBorderWidth = compChangeBorderWidth;
-    if (pWin->redirectDraw != RedirectDrawNone)
-    {
-	CompWindowPtr	cw = GetCompWindow (pWin);
-	if (cw->pOldPixmap)
-	{
-	    (*pScreen->DestroyPixmap) (cw->pOldPixmap);
-	    cw->pOldPixmap = NullPixmap;
-	}
-    }
-    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;
-	    REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, -dx, -dy);
-
-	    REGION_NULL (pWin->drawable.pScreen, &rgnDst);
-
-	    REGION_INTERSECT(pWin->drawable.pScreen, &rgnDst,
-			     &pWin->borderClip, prgnSrc);
-
-	    REGION_TRANSLATE (pWin->drawable.pScreen, &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 = REGION_RECTS (&rgnDst);
-		int	nBox = REGION_NUM_RECTS (&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)
-	    REGION_TRANSLATE (pScreen, prgnSrc, dx, dy);
-	(*pScreen->CopyWindow) (pWin, ptOldOrg, prgnSrc);
-	if (dx || dy)
-	    REGION_TRANSLATE (pScreen, prgnSrc, -dx, -dy);
-    }
-    else
-    {
-	ptOldOrg.x -= dx;
-	ptOldOrg.y -= dy;
-	REGION_TRANSLATE (prgnSrc, prgnSrc,
-			  pWin->drawable.x - ptOldOrg.x,
-			  pWin->drawable.y - ptOldOrg.y);
-	DamageRegionAppend(&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)
-	compFreePixmap (pWin);
-    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;
-
-    REGION_NULL (pScreen, &damage);
-    /*
-     * Align old border clip with new border clip
-     */
-    REGION_TRANSLATE (pScreen, &cw->borderClip,
-		      pWin->drawable.x - cw->borderClipX,
-		      pWin->drawable.y - cw->borderClipY);
-    /*
-     * Compute newly visible portion of window for repaint
-     */
-    REGION_SUBTRACT (pScreen, &damage, pRegion, &cw->borderClip);
-    /*
-     * Report that as damaged so it will be redrawn
-     */
-    DamageRegionAppend(&pWin->drawable, &damage);
-    REGION_UNINIT (pScreen, &damage);
-    /*
-     * Save the new border clip region
-     */
-    REGION_COPY (pScreen, &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
-     */
-    REGION_TRANSLATE (pScreen, pRegion,
-		      pWin->drawable.x, pWin->drawable.y);
-
-    /*
-     * Clip against the "real" border clip
-     */
-    REGION_INTERSECT (pScreen, pRegion, pRegion, &cw->borderClip);
-
-    /*
-     * Now translate from screen to dest coordinates
-     */
-    REGION_TRANSLATE (pScreen, 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);
-}
-
-void
-compWindowUpdate (WindowPtr pWin)
-{
-    WindowPtr	pChild;
-
-    for (pChild = pWin->lastChild; pChild; pChild = pChild->prevSib)
-	compWindowUpdate (pChild);
-    if (pWin->redirectDraw != RedirectDrawNone)
-    {
-	CompWindowPtr	cw = GetCompWindow(pWin);
-
-	if (cw->damaged)
-	{
-	    compWindowUpdateAutomatic (pWin);
-	    cw->damaged = FALSE;
-	}
-    }
-}
-
-WindowPtr
-CompositeRealChildHead (WindowPtr pWin)
-{
-    WindowPtr pChild, pChildBefore;
-    CompScreenPtr cs;
-
-    if (!pWin->parent &&
-	(screenIsSaved == SCREEN_SAVER_ON) &&
-	(HasSaverWindow (pWin->drawable.pScreen->myNum))) {
-
-	/* 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;
-    }
-}
+/*

+ * Copyright © 2006 Sun Microsystems, Inc.  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 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

+	    compFreePixmap (pWin);

+    }

+    return TRUE;

+}

+

+static int

+updateOverlayWindow(ScreenPtr pScreen)

+{

+	CompScreenPtr cs;

+	WindowPtr pWin; /* overlay window */

+	XID vlist[2];

+

+	cs = GetCompScreen(pScreen);

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

+		if ((pWin->drawable.width == pScreen->width) &&

+			(pWin->drawable.height == pScreen->height))

+			return Success;

+

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

+		vlist[0] = pScreen->width;

+		vlist[1] = pScreen->height;

+		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;

+}

+

+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);

+	DamageRegionAppend(&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)

+	compFreePixmap (pWin);

+    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

+     */

+    DamageRegionAppend(&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);

+}

+

+void

+compWindowUpdate (WindowPtr pWin)

+{

+    WindowPtr	pChild;

+

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

+	compWindowUpdate (pChild);

+    if (pWin->redirectDraw != RedirectDrawNone)

+    {

+	CompWindowPtr	cw = GetCompWindow(pWin);

+

+	if (cw->damaged)

+	{

+	    compWindowUpdateAutomatic (pWin);

+	    cw->damaged = 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;

+    CompWindowPtr       cw;

+    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);

+    

+    cw = GetCompWindow (pWin);

+    if (cw->pOldPixmap)

+    {

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

+	cw->pOldPixmap = NullPixmap;

+    }

+    compCheckTree (pScreen);

+

+    if (alloc_ret == FALSE)

+	return BadAlloc;

+    return Success;

+}