xserver git update 15/5/2010

2 files changed, 2411 insertions, 2411 deletions

diff --git a/xorg-server/miext/rootless/rootlessScreen.c b/xorg-server/miext/rootless/rootlessScreen.c
index 5f249467b..6f9341d85 100644
--- a/xorg-server/miext/rootless/rootlessScreen.c
+++ b/xorg-server/miext/rootless/rootlessScreen.c
@@ -1,755 +1,755 @@
-/*
- * Screen routines for generic rootless X server
- */
-/*
- * Copyright (c) 2001 Greg Parker. All Rights Reserved.
- * Copyright (c) 2002-2003 Torrey T. Lyons. All Rights Reserved.
- * Copyright (c) 2002 Apple Computer, 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 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 ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the name(s) of the above copyright
- * holders shall not be used in advertising or otherwise to promote the sale,
- * use or other dealings in this Software without prior written authorization.
- */
-
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include "mi.h"
-#include "scrnintstr.h"
-#include "gcstruct.h"
-#include "pixmapstr.h"
-#include "windowstr.h"
-#include "propertyst.h"
-#include "mivalidate.h"
-#include "picturestr.h"
-#include "colormapst.h"
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <string.h>
-
-#include "rootlessCommon.h"
-#include "rootlessWindow.h"
-
-/* In milliseconds */
-#ifndef ROOTLESS_REDISPLAY_DELAY
-#define ROOTLESS_REDISPLAY_DELAY 10
-#endif
-
-extern int RootlessMiValidateTree(WindowPtr pRoot, WindowPtr pChild,
-                                  VTKind kind);
-extern Bool RootlessCreateGC(GCPtr pGC);
-
-// Initialize globals
-static int rootlessGCPrivateKeyIndex;
-DevPrivateKey rootlessGCPrivateKey = &rootlessGCPrivateKeyIndex;
-static int rootlessScreenPrivateKeyIndex;
-DevPrivateKey rootlessScreenPrivateKey = &rootlessScreenPrivateKeyIndex;
-static int rootlessWindowPrivateKeyIndex;
-DevPrivateKey rootlessWindowPrivateKey = &rootlessWindowPrivateKeyIndex;
-static int rootlessWindowOldPixmapPrivateKeyIndex;
-DevPrivateKey rootlessWindowOldPixmapPrivateKey = &rootlessWindowOldPixmapPrivateKeyIndex;
-
-
-/*
- * RootlessUpdateScreenPixmap
- *  miCreateScreenResources does not like a null framebuffer pointer,
- *  it leaves the screen pixmap with an uninitialized data pointer.
- *  Thus, rootless implementations typically set the framebuffer width
- *  to zero so that miCreateScreenResources does not allocate a screen
- *  pixmap for us. We allocate our own screen pixmap here since we need
- *  the screen pixmap to be valid (e.g. CopyArea from the root window).
- */
-void
-RootlessUpdateScreenPixmap(ScreenPtr pScreen)
-{
-    RootlessScreenRec *s = SCREENREC(pScreen);
-    PixmapPtr pPix;
-    unsigned int rowbytes;
-
-    pPix = (*pScreen->GetScreenPixmap)(pScreen);
-    if (pPix == NULL) {
-        pPix = (*pScreen->CreatePixmap)(pScreen, 0, 0, pScreen->rootDepth, 0);
-        (*pScreen->SetScreenPixmap)(pPix);
-    }
-
-    rowbytes = PixmapBytePad(pScreen->width, pScreen->rootDepth);
-
-    if (s->pixmap_data_size < rowbytes) {
-        if (s->pixmap_data != NULL)
-            xfree(s->pixmap_data);
-
-        s->pixmap_data_size = rowbytes;
-        s->pixmap_data = xalloc(s->pixmap_data_size);
-        if (s->pixmap_data == NULL)
-            return;
-
-        memset(s->pixmap_data, 0xFF, s->pixmap_data_size);
-
-        pScreen->ModifyPixmapHeader(pPix, pScreen->width, pScreen->height,
-                                    pScreen->rootDepth,
-                                    BitsPerPixel(pScreen->rootDepth),
-                                    0, s->pixmap_data);
-        /* ModifyPixmapHeader ignores zero arguments, so install rowbytes
-           by hand. */
-        pPix->devKind = 0;
-    }
-}
-
-
-/*
- * RootlessCreateScreenResources
- *  Rootless implementations typically set a null framebuffer pointer, which
- *  causes problems with miCreateScreenResources. We fix things up here.
- */
-static Bool
-RootlessCreateScreenResources(ScreenPtr pScreen)
-{
-    Bool ret = TRUE;
-
-    SCREEN_UNWRAP(pScreen, CreateScreenResources);
-
-    if (pScreen->CreateScreenResources != NULL)
-        ret = (*pScreen->CreateScreenResources)(pScreen);
-
-    SCREEN_WRAP(pScreen, CreateScreenResources);
-
-    if (!ret)
-        return ret;
-
-    /* Make sure we have a valid screen pixmap. */
-
-    RootlessUpdateScreenPixmap(pScreen);
-
-    return ret;
-}
-
-
-static Bool
-RootlessCloseScreen(int i, ScreenPtr pScreen)
-{
-    RootlessScreenRec *s;
-
-    s = SCREENREC(pScreen);
-
-    // fixme unwrap everything that was wrapped?
-    pScreen->CloseScreen = s->CloseScreen;
-
-    if (s->pixmap_data != NULL) {
-        xfree (s->pixmap_data);
-        s->pixmap_data = NULL;
-        s->pixmap_data_size = 0;
-    }
-
-    xfree(s);
-    return pScreen->CloseScreen(i, pScreen);
-}
-
-
-static void
-RootlessGetImage(DrawablePtr pDrawable, int sx, int sy, int w, int h,
-                 unsigned int format, unsigned long planeMask, char *pdstLine)
-{
-    ScreenPtr pScreen = pDrawable->pScreen;
-    SCREEN_UNWRAP(pScreen, GetImage);
-
-    if (pDrawable->type == DRAWABLE_WINDOW) {
-        int x0, y0, x1, y1;
-        RootlessWindowRec *winRec;
-
-        // Many apps use GetImage to sync with the visible frame buffer
-        // FIXME: entire screen or just window or all screens?
-        RootlessRedisplayScreen(pScreen);
-
-        // RedisplayScreen stops drawing, so we need to start it again
-        RootlessStartDrawing((WindowPtr)pDrawable);
-
-        /* Check that we have some place to read from. */
-        winRec = WINREC(TopLevelParent((WindowPtr) pDrawable));
-        if (winRec == NULL)
-            goto out;
-
-        /* Clip to top-level window bounds. */
-        /* FIXME: fbGetImage uses the width parameter to calculate the
-           stride of the destination pixmap. If w is clipped, the data
-           returned will be garbage, although we will not crash. */
-
-        x0 = pDrawable->x + sx;
-        y0 = pDrawable->y + sy;
-        x1 = x0 + w;
-        y1 = y0 + h;
-
-        x0 = max (x0, winRec->x);
-        y0 = max (y0, winRec->y);
-        x1 = min (x1, winRec->x + winRec->width);
-        y1 = min (y1, winRec->y + winRec->height);
-
-        sx = x0 - pDrawable->x;
-        sy = y0 - pDrawable->y;
-        w = x1 - x0;
-        h = y1 - y0;
-
-        if (w <= 0 || h <= 0)
-            goto out;
-    }
-
-    pScreen->GetImage(pDrawable, sx, sy, w, h, format, planeMask, pdstLine);
-
-out:
-    SCREEN_WRAP(pScreen, GetImage);
-}
-
-
-/*
- * RootlessSourceValidate
- *  CopyArea and CopyPlane use a GC tied to the destination drawable.
- *  StartDrawing/StopDrawing wrappers won't be called if source is
- *  a visible window but the destination isn't. So, we call StartDrawing
- *  here and leave StopDrawing for the block handler.
- */
-static void
-RootlessSourceValidate(DrawablePtr pDrawable, int x, int y, int w, int h)
-{
-    SCREEN_UNWRAP(pDrawable->pScreen, SourceValidate);
-    if (pDrawable->type == DRAWABLE_WINDOW) {
-        WindowPtr pWin = (WindowPtr)pDrawable;
-        RootlessStartDrawing(pWin);
-    }
-    if (pDrawable->pScreen->SourceValidate) {
-        pDrawable->pScreen->SourceValidate(pDrawable, x, y, w, h);
-    }
-    SCREEN_WRAP(pDrawable->pScreen, SourceValidate);
-}
-
-static void
-RootlessComposite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst,
-                  INT16 xSrc, INT16 ySrc, INT16  xMask, INT16  yMask,
-                  INT16 xDst, INT16 yDst, CARD16 width, CARD16 height)
-{
-    ScreenPtr pScreen = pDst->pDrawable->pScreen;
-    PictureScreenPtr ps = GetPictureScreen(pScreen);
-    WindowPtr srcWin, dstWin, maskWin = NULL;
-
-    if (pMask) {                        // pMask can be NULL
-        maskWin = (pMask->pDrawable->type == DRAWABLE_WINDOW) ?
-                  (WindowPtr)pMask->pDrawable :  NULL;
-    }
-    srcWin  = (pSrc->pDrawable && pSrc->pDrawable->type  == DRAWABLE_WINDOW) ?
-              (WindowPtr)pSrc->pDrawable  :  NULL;
-    dstWin  = (pDst->pDrawable->type == DRAWABLE_WINDOW) ?
-              (WindowPtr)pDst->pDrawable  :  NULL;
-
-    // SCREEN_UNWRAP(ps, Composite);
-    ps->Composite = SCREENREC(pScreen)->Composite;
-
-    if (srcWin  && IsFramedWindow(srcWin))
-        RootlessStartDrawing(srcWin);
-    if (maskWin && IsFramedWindow(maskWin))
-        RootlessStartDrawing(maskWin);
-    if (dstWin  && IsFramedWindow(dstWin))
-        RootlessStartDrawing(dstWin);
-
-    ps->Composite(op, pSrc, pMask, pDst,
-                  xSrc, ySrc, xMask, yMask,
-                  xDst, yDst, width, height);
-
-    if (dstWin  && IsFramedWindow(dstWin)) {
-        RootlessDamageRect(dstWin, xDst, yDst, width, height);
-    }
-
-    ps->Composite = RootlessComposite;
-    // SCREEN_WRAP(ps, Composite);
-}
-
-
-static void
-RootlessGlyphs(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
-               PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
-               int nlist, GlyphListPtr list, GlyphPtr *glyphs)
-{
-    ScreenPtr pScreen = pDst->pDrawable->pScreen;
-    PictureScreenPtr ps = GetPictureScreen(pScreen);
-    int x, y;
-    int n;
-    GlyphPtr glyph;
-    WindowPtr srcWin, dstWin;
-
-    srcWin = (pSrc->pDrawable && pSrc->pDrawable->type == DRAWABLE_WINDOW) ?
-             (WindowPtr)pSrc->pDrawable  :  NULL;
-    dstWin = (pDst->pDrawable->type == DRAWABLE_WINDOW) ?
-             (WindowPtr)pDst->pDrawable  :  NULL;
-
-    if (srcWin && IsFramedWindow(srcWin)) RootlessStartDrawing(srcWin);
-    if (dstWin && IsFramedWindow(dstWin)) RootlessStartDrawing(dstWin);
-
-    //SCREEN_UNWRAP(ps, Glyphs);
-    ps->Glyphs = SCREENREC(pScreen)->Glyphs;
-    ps->Glyphs(op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, list, glyphs);
-    ps->Glyphs = RootlessGlyphs;
-    //SCREEN_WRAP(ps, Glyphs);
-
-    if (dstWin && IsFramedWindow(dstWin)) {
-        x = xSrc;
-        y = ySrc;
-
-        while (nlist--) {
-            x += list->xOff;
-            y += list->yOff;
-            n = list->len;
-
-            /* Calling DamageRect for the bounding box of each glyph is
-               inefficient. So compute the union of all glyphs in a list
-               and damage that. */
-
-            if (n > 0) {
-                BoxRec box;
-
-                glyph = *glyphs++;
-
-                box.x1 = x - glyph->info.x;
-                box.y1 = y - glyph->info.y;
-                box.x2 = box.x1 + glyph->info.width;
-                box.y2 = box.y2 + glyph->info.height;
-
-                x += glyph->info.xOff;
-                y += glyph->info.yOff;
-
-                while (--n > 0) {
-                    short x1, y1, x2, y2;
-
-                    glyph = *glyphs++;
-
-                    x1 = x - glyph->info.x;
-                    y1 = y - glyph->info.y;
-                    x2 = x1 + glyph->info.width;
-                    y2 = y1 + glyph->info.height;
-
-                    box.x1 = max (box.x1, x1);
-                    box.y1 = max (box.y1, y1);
-                    box.x2 = max (box.x2, x2);
-                    box.y2 = max (box.y2, y2);
-
-                    x += glyph->info.xOff;
-                    y += glyph->info.yOff;
-                }
-
-                RootlessDamageBox(dstWin, &box);
-            }
-            list++;
-        }
-    }
-}
-
-
-/*
- * RootlessValidateTree
- *  ValidateTree is modified in two ways:
- *   - top-level windows don't clip each other
- *   - windows aren't clipped against root.
- *  These only matter when validating from the root.
- */
-static int
-RootlessValidateTree(WindowPtr pParent, WindowPtr pChild, VTKind kind)
-{
-    int result;
-    RegionRec saveRoot;
-    ScreenPtr pScreen = pParent->drawable.pScreen;
-
-    SCREEN_UNWRAP(pScreen, ValidateTree);
-    RL_DEBUG_MSG("VALIDATETREE start ");
-
-    // Use our custom version to validate from root
-    if (IsRoot(pParent)) {
-        RL_DEBUG_MSG("custom ");
-        result = RootlessMiValidateTree(pParent, pChild, kind);
-    } else {
-        HUGE_ROOT(pParent);
-        result = pScreen->ValidateTree(pParent, pChild, kind);
-        NORMAL_ROOT(pParent);
-    }
-
-    SCREEN_WRAP(pScreen, ValidateTree);
-    RL_DEBUG_MSG("VALIDATETREE end\n");
-
-    return result;
-}
-
-
-/*
- * RootlessMarkOverlappedWindows
- *  MarkOverlappedWindows is modified to ignore overlapping
- *  top-level windows.
- */
-static Bool
-RootlessMarkOverlappedWindows(WindowPtr pWin, WindowPtr pFirst,
-                              WindowPtr *ppLayerWin)
-{
-    RegionRec saveRoot;
-    Bool result;
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    SCREEN_UNWRAP(pScreen, MarkOverlappedWindows);
-    RL_DEBUG_MSG("MARKOVERLAPPEDWINDOWS start ");
-
-    HUGE_ROOT(pWin);
-    if (IsRoot(pWin)) {
-        // root - mark nothing
-        RL_DEBUG_MSG("is root not marking ");
-        result = FALSE;
-    }
-    else if (! IsTopLevel(pWin)) {
-        // not top-level window - mark normally
-        result = pScreen->MarkOverlappedWindows(pWin, pFirst, ppLayerWin);
-    }
-    else {
-        //top-level window - mark children ONLY - NO overlaps with sibs (?)
-        // This code copied from miMarkOverlappedWindows()
-
-        register WindowPtr pChild;
-        Bool anyMarked = FALSE;
-        MarkWindowProcPtr MarkWindow = pScreen->MarkWindow;
-
-        RL_DEBUG_MSG("is top level! ");
-        /* single layered systems are easy */
-        if (ppLayerWin) *ppLayerWin = pWin;
-
-        if (pWin == pFirst) {
-            /* Blindly mark pWin and all of its inferiors.   This is a slight
-             * overkill if there are mapped windows that outside pWin's border,
-             * but it's better than wasting time on RectIn checks.
-             */
-            pChild = pWin;
-            while (1) {
-                if (pChild->viewable) {
-                    if (REGION_BROKEN (pScreen, &pChild->winSize))
-                        SetWinSize (pChild);
-                    if (REGION_BROKEN (pScreen, &pChild->borderSize))
-                        SetBorderSize (pChild);
-                    (* MarkWindow)(pChild);
-                    if (pChild->firstChild) {
-                        pChild = pChild->firstChild;
-                        continue;
-                    }
-                }
-                while (!pChild->nextSib && (pChild != pWin))
-                    pChild = pChild->parent;
-                if (pChild == pWin)
-                    break;
-                pChild = pChild->nextSib;
-            }
-            anyMarked = TRUE;
-            pFirst = pFirst->nextSib;
-        }
-        if (anyMarked)
-            (* MarkWindow)(pWin->parent);
-        result = anyMarked;
-    }
-    NORMAL_ROOT(pWin);
-    SCREEN_WRAP(pScreen, MarkOverlappedWindows);
-    RL_DEBUG_MSG("MARKOVERLAPPEDWINDOWS end\n");
-
-    return result;
-}
-
-static void expose_1 (WindowPtr pWin) {
-    WindowPtr pChild;
-    
-    if (!pWin->realized)
-        return;
-    
-    miPaintWindow(pWin, &pWin->borderClip, PW_BACKGROUND);
-    
-    /* FIXME: comments in windowstr.h indicate that borderClip doesn't
-     include subwindow visibility. But I'm not so sure.. so we may
-     be exposing too much.. */
-    
-    miSendExposures (pWin, &pWin->borderClip,
-                     pWin->drawable.x, pWin->drawable.y);
-    
-    for (pChild = pWin->firstChild; pChild != NULL; pChild = pChild->nextSib)
-        expose_1 (pChild);
-}
-
-void
-RootlessScreenExpose (ScreenPtr pScreen)
-{
-    expose_1 (WindowTable[pScreen->myNum]);
-}
-
-
-ColormapPtr
-RootlessGetColormap (ScreenPtr pScreen)
-{
-  RootlessScreenRec *s = SCREENREC (pScreen);
-
-  return s->colormap;
-}
-
-static void
-RootlessInstallColormap (ColormapPtr pMap)
-{
-  ScreenPtr pScreen = pMap->pScreen;
-  RootlessScreenRec *s = SCREENREC (pScreen);
-
-  SCREEN_UNWRAP(pScreen, InstallColormap);
-
-  if (s->colormap != pMap) {
-    s->colormap = pMap;
-    s->colormap_changed = TRUE;
-    RootlessQueueRedisplay (pScreen);
-  }
-
-  pScreen->InstallColormap (pMap);
-
-  SCREEN_WRAP (pScreen, InstallColormap);
-}
-
-static void
-RootlessUninstallColormap (ColormapPtr pMap)
-{
-  ScreenPtr pScreen = pMap->pScreen;
-  RootlessScreenRec *s = SCREENREC (pScreen);
-
-  SCREEN_UNWRAP(pScreen, UninstallColormap);
-
-  if (s->colormap == pMap)
-    s->colormap = NULL;
-
-  pScreen->UninstallColormap (pMap);
-
-  SCREEN_WRAP(pScreen, UninstallColormap);
-}
-
-static void
-RootlessStoreColors (ColormapPtr pMap, int ndef, xColorItem *pdef)
-{
-  ScreenPtr pScreen = pMap->pScreen;
-  RootlessScreenRec *s = SCREENREC (pScreen);
-
-  SCREEN_UNWRAP(pScreen, StoreColors);
-
-  if (s->colormap == pMap && ndef > 0) {
-    s->colormap_changed = TRUE;
-    RootlessQueueRedisplay (pScreen);
-  }
-
-  pScreen->StoreColors (pMap, ndef, pdef);
-
-  SCREEN_WRAP(pScreen, StoreColors);
-}
-
-
-static CARD32
-RootlessRedisplayCallback(OsTimerPtr timer, CARD32 time, void *arg)
-{
-    RootlessScreenRec *screenRec = arg;
-
-    if (!screenRec->redisplay_queued) {
-        /* No update needed. Stop the timer. */
-
-        screenRec->redisplay_timer_set = FALSE;
-        return 0;
-    }
-
-    screenRec->redisplay_queued = FALSE;
-
-    /* Mark that we should redisplay before waiting for I/O next time */
-    screenRec->redisplay_expired = TRUE;
-
-    /* Reinstall the timer immediately, so we get as close to our
-       redisplay interval as possible. */
-
-    return ROOTLESS_REDISPLAY_DELAY;
-}
-
-
-/*
- * RootlessQueueRedisplay
- *  Queue a redisplay after a timer delay to ensure we do not redisplay
- *  too frequently.
- */
-void
-RootlessQueueRedisplay(ScreenPtr pScreen)
-{
-    RootlessScreenRec *screenRec = SCREENREC(pScreen);
-
-    screenRec->redisplay_queued = TRUE;
-
-    if (screenRec->redisplay_timer_set)
-        return;
-
-    screenRec->redisplay_timer = TimerSet(screenRec->redisplay_timer,
-                                          0, ROOTLESS_REDISPLAY_DELAY,
-                                          RootlessRedisplayCallback,
-                                          screenRec);
-    screenRec->redisplay_timer_set = TRUE;
-}
-
-
-/*
- * RootlessBlockHandler
- *  If the redisplay timer has expired, flush drawing before blocking
- *  on select().
- */
-static void
-RootlessBlockHandler(pointer pbdata, OSTimePtr pTimeout, pointer pReadmask)
-{
-    ScreenPtr pScreen = pbdata;
-    RootlessScreenRec *screenRec = SCREENREC(pScreen);
-
-    if (screenRec->redisplay_expired) {
-        screenRec->redisplay_expired = FALSE;
-
-        RootlessRedisplayScreen(pScreen);
-    }
-}
-
-
-static void
-RootlessWakeupHandler(pointer data, int i, pointer LastSelectMask)
-{
-    // nothing here
-}
-
-
-static Bool
-RootlessAllocatePrivates(ScreenPtr pScreen)
-{
-    RootlessScreenRec *s;
-
-    // no allocation needed for screen privates
-    if (!dixRequestPrivate(rootlessGCPrivateKey, sizeof(RootlessGCRec)))
-        return FALSE;
-
-    s = xalloc(sizeof(RootlessScreenRec));
-    if (! s) return FALSE;
-    SETSCREENREC(pScreen, s);
-
-    s->pixmap_data = NULL;
-    s->pixmap_data_size = 0;
-
-    s->redisplay_timer = NULL;
-    s->redisplay_timer_set = FALSE;
-
-    return TRUE;
-}
-
-
-static void
-RootlessWrap(ScreenPtr pScreen)
-{
-    RootlessScreenRec *s = SCREENREC(pScreen);
-
-#define WRAP(a) \
-    if (pScreen->a) { \
-        s->a = pScreen->a; \
-    } else { \
-        RL_DEBUG_MSG("null screen fn " #a "\n"); \
-        s->a = NULL; \
-    } \
-    pScreen->a = Rootless##a
-
-    WRAP(CreateScreenResources);
-    WRAP(CloseScreen);
-    WRAP(CreateGC);
-    WRAP(CopyWindow);
-    WRAP(GetImage);
-    WRAP(SourceValidate);
-    WRAP(CreateWindow);
-    WRAP(DestroyWindow);
-    WRAP(RealizeWindow);
-    WRAP(UnrealizeWindow);
-    WRAP(MoveWindow);
-    WRAP(PositionWindow);
-    WRAP(ResizeWindow);
-    WRAP(RestackWindow);
-    WRAP(ReparentWindow);
-    WRAP(ChangeBorderWidth);
-    WRAP(MarkOverlappedWindows);
-    WRAP(ValidateTree);
-    WRAP(ChangeWindowAttributes);
-    WRAP(InstallColormap);
-    WRAP(UninstallColormap);
-    WRAP(StoreColors);
-
-    WRAP(SetShape);
-
-    {
-        // Composite and Glyphs don't use normal screen wrapping
-        PictureScreenPtr ps = GetPictureScreen(pScreen);
-        s->Composite = ps->Composite;
-        ps->Composite = RootlessComposite;
-        s->Glyphs = ps->Glyphs;
-        ps->Glyphs = RootlessGlyphs;
-    }
-
-    // WRAP(ClearToBackground); fixme put this back? useful for shaped wins?
-
-#undef WRAP
-}
-
-
-/*
- * RootlessInit
- *  Called by the rootless implementation to initialize the rootless layer.
- *  Rootless wraps lots of stuff and needs a bunch of devPrivates.
- */
-Bool RootlessInit(ScreenPtr pScreen, RootlessFrameProcsPtr procs)
-{
-    RootlessScreenRec *s;
-
-    if (!RootlessAllocatePrivates(pScreen))
-        return FALSE;
-
-    s = SCREENREC(pScreen);
-
-    s->imp = procs;
-    s->colormap = NULL;
-    s->redisplay_expired = FALSE;
-
-    RootlessWrap(pScreen);
-
-    if (!RegisterBlockAndWakeupHandlers(RootlessBlockHandler,
-                                        RootlessWakeupHandler,
-                                        (pointer) pScreen))
-    {
-        return FALSE;
-    }
-
-    return TRUE;
-}
-
-void RootlessUpdateRooted (Bool state) {
-    int i;
-    
-    if (!state)
-    {
-        for (i = 0; i < screenInfo.numScreens; i++)
-            RootlessDisableRoot (screenInfo.screens[i]);
-    }
-    else
-    {
-        for (i = 0; i < screenInfo.numScreens; i++)
-            RootlessEnableRoot (screenInfo.screens[i]);
-    }
-}
+/*

+ * Screen routines for generic rootless X server

+ */

+/*

+ * Copyright (c) 2001 Greg Parker. All Rights Reserved.

+ * Copyright (c) 2002-2003 Torrey T. Lyons. All Rights Reserved.

+ * Copyright (c) 2002 Apple Computer, 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 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 ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

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

+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ *

+ * Except as contained in this notice, the name(s) of the above copyright

+ * holders shall not be used in advertising or otherwise to promote the sale,

+ * use or other dealings in this Software without prior written authorization.

+ */

+

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include "mi.h"

+#include "scrnintstr.h"

+#include "gcstruct.h"

+#include "pixmapstr.h"

+#include "windowstr.h"

+#include "propertyst.h"

+#include "mivalidate.h"

+#include "picturestr.h"

+#include "colormapst.h"

+

+#include <sys/types.h>

+#include <sys/stat.h>

+#include <fcntl.h>

+#include <string.h>

+

+#include "rootlessCommon.h"

+#include "rootlessWindow.h"

+

+/* In milliseconds */

+#ifndef ROOTLESS_REDISPLAY_DELAY

+#define ROOTLESS_REDISPLAY_DELAY 10

+#endif

+

+extern int RootlessMiValidateTree(WindowPtr pRoot, WindowPtr pChild,

+                                  VTKind kind);

+extern Bool RootlessCreateGC(GCPtr pGC);

+

+// Initialize globals

+static int rootlessGCPrivateKeyIndex;

+DevPrivateKey rootlessGCPrivateKey = &rootlessGCPrivateKeyIndex;

+static int rootlessScreenPrivateKeyIndex;

+DevPrivateKey rootlessScreenPrivateKey = &rootlessScreenPrivateKeyIndex;

+static int rootlessWindowPrivateKeyIndex;

+DevPrivateKey rootlessWindowPrivateKey = &rootlessWindowPrivateKeyIndex;

+static int rootlessWindowOldPixmapPrivateKeyIndex;

+DevPrivateKey rootlessWindowOldPixmapPrivateKey = &rootlessWindowOldPixmapPrivateKeyIndex;

+

+

+/*

+ * RootlessUpdateScreenPixmap

+ *  miCreateScreenResources does not like a null framebuffer pointer,

+ *  it leaves the screen pixmap with an uninitialized data pointer.

+ *  Thus, rootless implementations typically set the framebuffer width

+ *  to zero so that miCreateScreenResources does not allocate a screen

+ *  pixmap for us. We allocate our own screen pixmap here since we need

+ *  the screen pixmap to be valid (e.g. CopyArea from the root window).

+ */

+void

+RootlessUpdateScreenPixmap(ScreenPtr pScreen)

+{

+    RootlessScreenRec *s = SCREENREC(pScreen);

+    PixmapPtr pPix;

+    unsigned int rowbytes;

+

+    pPix = (*pScreen->GetScreenPixmap)(pScreen);

+    if (pPix == NULL) {

+        pPix = (*pScreen->CreatePixmap)(pScreen, 0, 0, pScreen->rootDepth, 0);

+        (*pScreen->SetScreenPixmap)(pPix);

+    }

+

+    rowbytes = PixmapBytePad(pScreen->width, pScreen->rootDepth);

+

+    if (s->pixmap_data_size < rowbytes) {

+        if (s->pixmap_data != NULL)

+            free(s->pixmap_data);

+

+        s->pixmap_data_size = rowbytes;

+        s->pixmap_data = malloc(s->pixmap_data_size);

+        if (s->pixmap_data == NULL)

+            return;

+

+        memset(s->pixmap_data, 0xFF, s->pixmap_data_size);

+

+        pScreen->ModifyPixmapHeader(pPix, pScreen->width, pScreen->height,

+                                    pScreen->rootDepth,

+                                    BitsPerPixel(pScreen->rootDepth),

+                                    0, s->pixmap_data);

+        /* ModifyPixmapHeader ignores zero arguments, so install rowbytes

+           by hand. */

+        pPix->devKind = 0;

+    }

+}

+

+

+/*

+ * RootlessCreateScreenResources

+ *  Rootless implementations typically set a null framebuffer pointer, which

+ *  causes problems with miCreateScreenResources. We fix things up here.

+ */

+static Bool

+RootlessCreateScreenResources(ScreenPtr pScreen)

+{

+    Bool ret = TRUE;

+

+    SCREEN_UNWRAP(pScreen, CreateScreenResources);

+

+    if (pScreen->CreateScreenResources != NULL)

+        ret = (*pScreen->CreateScreenResources)(pScreen);

+

+    SCREEN_WRAP(pScreen, CreateScreenResources);

+

+    if (!ret)

+        return ret;

+

+    /* Make sure we have a valid screen pixmap. */

+

+    RootlessUpdateScreenPixmap(pScreen);

+

+    return ret;

+}

+

+

+static Bool

+RootlessCloseScreen(int i, ScreenPtr pScreen)

+{

+    RootlessScreenRec *s;

+

+    s = SCREENREC(pScreen);

+

+    // fixme unwrap everything that was wrapped?

+    pScreen->CloseScreen = s->CloseScreen;

+

+    if (s->pixmap_data != NULL) {

+        free(s->pixmap_data);

+        s->pixmap_data = NULL;

+        s->pixmap_data_size = 0;

+    }

+

+    free(s);

+    return pScreen->CloseScreen(i, pScreen);

+}

+

+

+static void

+RootlessGetImage(DrawablePtr pDrawable, int sx, int sy, int w, int h,

+                 unsigned int format, unsigned long planeMask, char *pdstLine)

+{

+    ScreenPtr pScreen = pDrawable->pScreen;

+    SCREEN_UNWRAP(pScreen, GetImage);

+

+    if (pDrawable->type == DRAWABLE_WINDOW) {

+        int x0, y0, x1, y1;

+        RootlessWindowRec *winRec;

+

+        // Many apps use GetImage to sync with the visible frame buffer

+        // FIXME: entire screen or just window or all screens?

+        RootlessRedisplayScreen(pScreen);

+

+        // RedisplayScreen stops drawing, so we need to start it again

+        RootlessStartDrawing((WindowPtr)pDrawable);

+

+        /* Check that we have some place to read from. */

+        winRec = WINREC(TopLevelParent((WindowPtr) pDrawable));

+        if (winRec == NULL)

+            goto out;

+

+        /* Clip to top-level window bounds. */

+        /* FIXME: fbGetImage uses the width parameter to calculate the

+           stride of the destination pixmap. If w is clipped, the data

+           returned will be garbage, although we will not crash. */

+

+        x0 = pDrawable->x + sx;

+        y0 = pDrawable->y + sy;

+        x1 = x0 + w;

+        y1 = y0 + h;

+

+        x0 = max (x0, winRec->x);

+        y0 = max (y0, winRec->y);

+        x1 = min (x1, winRec->x + winRec->width);

+        y1 = min (y1, winRec->y + winRec->height);

+

+        sx = x0 - pDrawable->x;

+        sy = y0 - pDrawable->y;

+        w = x1 - x0;

+        h = y1 - y0;

+

+        if (w <= 0 || h <= 0)

+            goto out;

+    }

+

+    pScreen->GetImage(pDrawable, sx, sy, w, h, format, planeMask, pdstLine);

+

+out:

+    SCREEN_WRAP(pScreen, GetImage);

+}

+

+

+/*

+ * RootlessSourceValidate

+ *  CopyArea and CopyPlane use a GC tied to the destination drawable.

+ *  StartDrawing/StopDrawing wrappers won't be called if source is

+ *  a visible window but the destination isn't. So, we call StartDrawing

+ *  here and leave StopDrawing for the block handler.

+ */

+static void

+RootlessSourceValidate(DrawablePtr pDrawable, int x, int y, int w, int h)

+{

+    SCREEN_UNWRAP(pDrawable->pScreen, SourceValidate);

+    if (pDrawable->type == DRAWABLE_WINDOW) {

+        WindowPtr pWin = (WindowPtr)pDrawable;

+        RootlessStartDrawing(pWin);

+    }

+    if (pDrawable->pScreen->SourceValidate) {

+        pDrawable->pScreen->SourceValidate(pDrawable, x, y, w, h);

+    }

+    SCREEN_WRAP(pDrawable->pScreen, SourceValidate);

+}

+

+static void

+RootlessComposite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst,

+                  INT16 xSrc, INT16 ySrc, INT16  xMask, INT16  yMask,

+                  INT16 xDst, INT16 yDst, CARD16 width, CARD16 height)

+{

+    ScreenPtr pScreen = pDst->pDrawable->pScreen;

+    PictureScreenPtr ps = GetPictureScreen(pScreen);

+    WindowPtr srcWin, dstWin, maskWin = NULL;

+

+    if (pMask) {                        // pMask can be NULL

+        maskWin = (pMask->pDrawable->type == DRAWABLE_WINDOW) ?

+                  (WindowPtr)pMask->pDrawable :  NULL;

+    }

+    srcWin  = (pSrc->pDrawable && pSrc->pDrawable->type  == DRAWABLE_WINDOW) ?

+              (WindowPtr)pSrc->pDrawable  :  NULL;

+    dstWin  = (pDst->pDrawable->type == DRAWABLE_WINDOW) ?

+              (WindowPtr)pDst->pDrawable  :  NULL;

+

+    // SCREEN_UNWRAP(ps, Composite);

+    ps->Composite = SCREENREC(pScreen)->Composite;

+

+    if (srcWin  && IsFramedWindow(srcWin))

+        RootlessStartDrawing(srcWin);

+    if (maskWin && IsFramedWindow(maskWin))

+        RootlessStartDrawing(maskWin);

+    if (dstWin  && IsFramedWindow(dstWin))

+        RootlessStartDrawing(dstWin);

+

+    ps->Composite(op, pSrc, pMask, pDst,

+                  xSrc, ySrc, xMask, yMask,

+                  xDst, yDst, width, height);

+

+    if (dstWin  && IsFramedWindow(dstWin)) {

+        RootlessDamageRect(dstWin, xDst, yDst, width, height);

+    }

+

+    ps->Composite = RootlessComposite;

+    // SCREEN_WRAP(ps, Composite);

+}

+

+

+static void

+RootlessGlyphs(CARD8 op, PicturePtr pSrc, PicturePtr pDst,

+               PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,

+               int nlist, GlyphListPtr list, GlyphPtr *glyphs)

+{

+    ScreenPtr pScreen = pDst->pDrawable->pScreen;

+    PictureScreenPtr ps = GetPictureScreen(pScreen);

+    int x, y;

+    int n;

+    GlyphPtr glyph;

+    WindowPtr srcWin, dstWin;

+

+    srcWin = (pSrc->pDrawable && pSrc->pDrawable->type == DRAWABLE_WINDOW) ?

+             (WindowPtr)pSrc->pDrawable  :  NULL;

+    dstWin = (pDst->pDrawable->type == DRAWABLE_WINDOW) ?

+             (WindowPtr)pDst->pDrawable  :  NULL;

+

+    if (srcWin && IsFramedWindow(srcWin)) RootlessStartDrawing(srcWin);

+    if (dstWin && IsFramedWindow(dstWin)) RootlessStartDrawing(dstWin);

+

+    //SCREEN_UNWRAP(ps, Glyphs);

+    ps->Glyphs = SCREENREC(pScreen)->Glyphs;

+    ps->Glyphs(op, pSrc, pDst, maskFormat, xSrc, ySrc, nlist, list, glyphs);

+    ps->Glyphs = RootlessGlyphs;

+    //SCREEN_WRAP(ps, Glyphs);

+

+    if (dstWin && IsFramedWindow(dstWin)) {

+        x = xSrc;

+        y = ySrc;

+

+        while (nlist--) {

+            x += list->xOff;

+            y += list->yOff;

+            n = list->len;

+

+            /* Calling DamageRect for the bounding box of each glyph is

+               inefficient. So compute the union of all glyphs in a list

+               and damage that. */

+

+            if (n > 0) {

+                BoxRec box;

+

+                glyph = *glyphs++;

+

+                box.x1 = x - glyph->info.x;

+                box.y1 = y - glyph->info.y;

+                box.x2 = box.x1 + glyph->info.width;

+                box.y2 = box.y2 + glyph->info.height;

+

+                x += glyph->info.xOff;

+                y += glyph->info.yOff;

+

+                while (--n > 0) {

+                    short x1, y1, x2, y2;

+

+                    glyph = *glyphs++;

+

+                    x1 = x - glyph->info.x;

+                    y1 = y - glyph->info.y;

+                    x2 = x1 + glyph->info.width;

+                    y2 = y1 + glyph->info.height;

+

+                    box.x1 = max (box.x1, x1);

+                    box.y1 = max (box.y1, y1);

+                    box.x2 = max (box.x2, x2);

+                    box.y2 = max (box.y2, y2);

+

+                    x += glyph->info.xOff;

+                    y += glyph->info.yOff;

+                }

+

+                RootlessDamageBox(dstWin, &box);

+            }

+            list++;

+        }

+    }

+}

+

+

+/*

+ * RootlessValidateTree

+ *  ValidateTree is modified in two ways:

+ *   - top-level windows don't clip each other

+ *   - windows aren't clipped against root.

+ *  These only matter when validating from the root.

+ */

+static int

+RootlessValidateTree(WindowPtr pParent, WindowPtr pChild, VTKind kind)

+{

+    int result;

+    RegionRec saveRoot;

+    ScreenPtr pScreen = pParent->drawable.pScreen;

+

+    SCREEN_UNWRAP(pScreen, ValidateTree);

+    RL_DEBUG_MSG("VALIDATETREE start ");

+

+    // Use our custom version to validate from root

+    if (IsRoot(pParent)) {

+        RL_DEBUG_MSG("custom ");

+        result = RootlessMiValidateTree(pParent, pChild, kind);

+    } else {

+        HUGE_ROOT(pParent);

+        result = pScreen->ValidateTree(pParent, pChild, kind);

+        NORMAL_ROOT(pParent);

+    }

+

+    SCREEN_WRAP(pScreen, ValidateTree);

+    RL_DEBUG_MSG("VALIDATETREE end\n");

+

+    return result;

+}

+

+

+/*

+ * RootlessMarkOverlappedWindows

+ *  MarkOverlappedWindows is modified to ignore overlapping

+ *  top-level windows.

+ */

+static Bool

+RootlessMarkOverlappedWindows(WindowPtr pWin, WindowPtr pFirst,

+                              WindowPtr *ppLayerWin)

+{

+    RegionRec saveRoot;

+    Bool result;

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    SCREEN_UNWRAP(pScreen, MarkOverlappedWindows);

+    RL_DEBUG_MSG("MARKOVERLAPPEDWINDOWS start ");

+

+    HUGE_ROOT(pWin);

+    if (IsRoot(pWin)) {

+        // root - mark nothing

+        RL_DEBUG_MSG("is root not marking ");

+        result = FALSE;

+    }

+    else if (! IsTopLevel(pWin)) {

+        // not top-level window - mark normally

+        result = pScreen->MarkOverlappedWindows(pWin, pFirst, ppLayerWin);

+    }

+    else {

+        //top-level window - mark children ONLY - NO overlaps with sibs (?)

+        // This code copied from miMarkOverlappedWindows()

+

+        register WindowPtr pChild;

+        Bool anyMarked = FALSE;

+        MarkWindowProcPtr MarkWindow = pScreen->MarkWindow;

+

+        RL_DEBUG_MSG("is top level! ");

+        /* single layered systems are easy */

+        if (ppLayerWin) *ppLayerWin = pWin;

+

+        if (pWin == pFirst) {

+            /* Blindly mark pWin and all of its inferiors.   This is a slight

+             * overkill if there are mapped windows that outside pWin's border,

+             * but it's better than wasting time on RectIn checks.

+             */

+            pChild = pWin;

+            while (1) {

+                if (pChild->viewable) {

+                    if (REGION_BROKEN (pScreen, &pChild->winSize))

+                        SetWinSize (pChild);

+                    if (REGION_BROKEN (pScreen, &pChild->borderSize))

+                        SetBorderSize (pChild);

+                    (* MarkWindow)(pChild);

+                    if (pChild->firstChild) {

+                        pChild = pChild->firstChild;

+                        continue;

+                    }

+                }

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

+                    pChild = pChild->parent;

+                if (pChild == pWin)

+                    break;

+                pChild = pChild->nextSib;

+            }

+            anyMarked = TRUE;

+            pFirst = pFirst->nextSib;

+        }

+        if (anyMarked)

+            (* MarkWindow)(pWin->parent);

+        result = anyMarked;

+    }

+    NORMAL_ROOT(pWin);

+    SCREEN_WRAP(pScreen, MarkOverlappedWindows);

+    RL_DEBUG_MSG("MARKOVERLAPPEDWINDOWS end\n");

+

+    return result;

+}

+

+static void expose_1 (WindowPtr pWin) {

+    WindowPtr pChild;

+    

+    if (!pWin->realized)

+        return;

+    

+    miPaintWindow(pWin, &pWin->borderClip, PW_BACKGROUND);

+    

+    /* FIXME: comments in windowstr.h indicate that borderClip doesn't

+     include subwindow visibility. But I'm not so sure.. so we may

+     be exposing too much.. */

+    

+    miSendExposures (pWin, &pWin->borderClip,

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

+    

+    for (pChild = pWin->firstChild; pChild != NULL; pChild = pChild->nextSib)

+        expose_1 (pChild);

+}

+

+void

+RootlessScreenExpose (ScreenPtr pScreen)

+{

+    expose_1 (WindowTable[pScreen->myNum]);

+}

+

+

+ColormapPtr

+RootlessGetColormap (ScreenPtr pScreen)

+{

+  RootlessScreenRec *s = SCREENREC (pScreen);

+

+  return s->colormap;

+}

+

+static void

+RootlessInstallColormap (ColormapPtr pMap)

+{

+  ScreenPtr pScreen = pMap->pScreen;

+  RootlessScreenRec *s = SCREENREC (pScreen);

+

+  SCREEN_UNWRAP(pScreen, InstallColormap);

+

+  if (s->colormap != pMap) {

+    s->colormap = pMap;

+    s->colormap_changed = TRUE;

+    RootlessQueueRedisplay (pScreen);

+  }

+

+  pScreen->InstallColormap (pMap);

+

+  SCREEN_WRAP (pScreen, InstallColormap);

+}

+

+static void

+RootlessUninstallColormap (ColormapPtr pMap)

+{

+  ScreenPtr pScreen = pMap->pScreen;

+  RootlessScreenRec *s = SCREENREC (pScreen);

+

+  SCREEN_UNWRAP(pScreen, UninstallColormap);

+

+  if (s->colormap == pMap)

+    s->colormap = NULL;

+

+  pScreen->UninstallColormap (pMap);

+

+  SCREEN_WRAP(pScreen, UninstallColormap);

+}

+

+static void

+RootlessStoreColors (ColormapPtr pMap, int ndef, xColorItem *pdef)

+{

+  ScreenPtr pScreen = pMap->pScreen;

+  RootlessScreenRec *s = SCREENREC (pScreen);

+

+  SCREEN_UNWRAP(pScreen, StoreColors);

+

+  if (s->colormap == pMap && ndef > 0) {

+    s->colormap_changed = TRUE;

+    RootlessQueueRedisplay (pScreen);

+  }

+

+  pScreen->StoreColors (pMap, ndef, pdef);

+

+  SCREEN_WRAP(pScreen, StoreColors);

+}

+

+

+static CARD32

+RootlessRedisplayCallback(OsTimerPtr timer, CARD32 time, void *arg)

+{

+    RootlessScreenRec *screenRec = arg;

+

+    if (!screenRec->redisplay_queued) {

+        /* No update needed. Stop the timer. */

+

+        screenRec->redisplay_timer_set = FALSE;

+        return 0;

+    }

+

+    screenRec->redisplay_queued = FALSE;

+

+    /* Mark that we should redisplay before waiting for I/O next time */

+    screenRec->redisplay_expired = TRUE;

+

+    /* Reinstall the timer immediately, so we get as close to our

+       redisplay interval as possible. */

+

+    return ROOTLESS_REDISPLAY_DELAY;

+}

+

+

+/*

+ * RootlessQueueRedisplay

+ *  Queue a redisplay after a timer delay to ensure we do not redisplay

+ *  too frequently.

+ */

+void

+RootlessQueueRedisplay(ScreenPtr pScreen)

+{

+    RootlessScreenRec *screenRec = SCREENREC(pScreen);

+

+    screenRec->redisplay_queued = TRUE;

+

+    if (screenRec->redisplay_timer_set)

+        return;

+

+    screenRec->redisplay_timer = TimerSet(screenRec->redisplay_timer,

+                                          0, ROOTLESS_REDISPLAY_DELAY,

+                                          RootlessRedisplayCallback,

+                                          screenRec);

+    screenRec->redisplay_timer_set = TRUE;

+}

+

+

+/*

+ * RootlessBlockHandler

+ *  If the redisplay timer has expired, flush drawing before blocking

+ *  on select().

+ */

+static void

+RootlessBlockHandler(pointer pbdata, OSTimePtr pTimeout, pointer pReadmask)

+{

+    ScreenPtr pScreen = pbdata;

+    RootlessScreenRec *screenRec = SCREENREC(pScreen);

+

+    if (screenRec->redisplay_expired) {

+        screenRec->redisplay_expired = FALSE;

+

+        RootlessRedisplayScreen(pScreen);

+    }

+}

+

+

+static void

+RootlessWakeupHandler(pointer data, int i, pointer LastSelectMask)

+{

+    // nothing here

+}

+

+

+static Bool

+RootlessAllocatePrivates(ScreenPtr pScreen)

+{

+    RootlessScreenRec *s;

+

+    // no allocation needed for screen privates

+    if (!dixRequestPrivate(rootlessGCPrivateKey, sizeof(RootlessGCRec)))

+        return FALSE;

+

+    s = malloc(sizeof(RootlessScreenRec));

+    if (! s) return FALSE;

+    SETSCREENREC(pScreen, s);

+

+    s->pixmap_data = NULL;

+    s->pixmap_data_size = 0;

+

+    s->redisplay_timer = NULL;

+    s->redisplay_timer_set = FALSE;

+

+    return TRUE;

+}

+

+

+static void

+RootlessWrap(ScreenPtr pScreen)

+{

+    RootlessScreenRec *s = SCREENREC(pScreen);

+

+#define WRAP(a) \

+    if (pScreen->a) { \

+        s->a = pScreen->a; \

+    } else { \

+        RL_DEBUG_MSG("null screen fn " #a "\n"); \

+        s->a = NULL; \

+    } \

+    pScreen->a = Rootless##a

+

+    WRAP(CreateScreenResources);

+    WRAP(CloseScreen);

+    WRAP(CreateGC);

+    WRAP(CopyWindow);

+    WRAP(GetImage);

+    WRAP(SourceValidate);

+    WRAP(CreateWindow);

+    WRAP(DestroyWindow);

+    WRAP(RealizeWindow);

+    WRAP(UnrealizeWindow);

+    WRAP(MoveWindow);

+    WRAP(PositionWindow);

+    WRAP(ResizeWindow);

+    WRAP(RestackWindow);

+    WRAP(ReparentWindow);

+    WRAP(ChangeBorderWidth);

+    WRAP(MarkOverlappedWindows);

+    WRAP(ValidateTree);

+    WRAP(ChangeWindowAttributes);

+    WRAP(InstallColormap);

+    WRAP(UninstallColormap);

+    WRAP(StoreColors);

+

+    WRAP(SetShape);

+

+    {

+        // Composite and Glyphs don't use normal screen wrapping

+        PictureScreenPtr ps = GetPictureScreen(pScreen);

+        s->Composite = ps->Composite;

+        ps->Composite = RootlessComposite;

+        s->Glyphs = ps->Glyphs;

+        ps->Glyphs = RootlessGlyphs;

+    }

+

+    // WRAP(ClearToBackground); fixme put this back? useful for shaped wins?

+

+#undef WRAP

+}

+

+

+/*

+ * RootlessInit

+ *  Called by the rootless implementation to initialize the rootless layer.

+ *  Rootless wraps lots of stuff and needs a bunch of devPrivates.

+ */

+Bool RootlessInit(ScreenPtr pScreen, RootlessFrameProcsPtr procs)

+{

+    RootlessScreenRec *s;

+

+    if (!RootlessAllocatePrivates(pScreen))

+        return FALSE;

+

+    s = SCREENREC(pScreen);

+

+    s->imp = procs;

+    s->colormap = NULL;

+    s->redisplay_expired = FALSE;

+

+    RootlessWrap(pScreen);

+

+    if (!RegisterBlockAndWakeupHandlers(RootlessBlockHandler,

+                                        RootlessWakeupHandler,

+                                        (pointer) pScreen))

+    {

+        return FALSE;

+    }

+

+    return TRUE;

+}

+

+void RootlessUpdateRooted (Bool state) {

+    int i;

+    

+    if (!state)

+    {

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

+            RootlessDisableRoot (screenInfo.screens[i]);

+    }

+    else

+    {

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

+            RootlessEnableRoot (screenInfo.screens[i]);

+    }

+}

diff --git a/xorg-server/miext/rootless/rootlessWindow.c b/xorg-server/miext/rootless/rootlessWindow.c
index 55c7b9689..2f412ee43 100644
--- a/xorg-server/miext/rootless/rootlessWindow.c
+++ b/xorg-server/miext/rootless/rootlessWindow.c
@@ -1,1656 +1,1656 @@
-/*
- * Rootless window management
- */
-/*
- * Copyright (c) 2001 Greg Parker. All Rights Reserved.
- * Copyright (c) 2002-2004 Torrey T. Lyons. All Rights Reserved.
- * Copyright (c) 2002 Apple Computer, 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 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 ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the name(s) of the above copyright
- * holders shall not be used in advertising or otherwise to promote the sale,
- * use or other dealings in this Software without prior written authorization.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stddef.h> /* For NULL */
-#include <limits.h> /* For CHAR_BIT */
-#include <assert.h>
-#include <X11/Xatom.h>
-#ifdef __APPLE__
-#include <Xplugin.h>
-#include "mi.h"
-#include "pixmapstr.h"
-#include "windowstr.h"
-//#include <X11/extensions/applewm.h>
-extern int darwinMainScreenX, darwinMainScreenY;
-extern Bool no_configure_window;
-#endif
-#include "fb.h"
-
-#include "rootlessCommon.h"
-#include "rootlessWindow.h"
-
-#ifdef ROOTLESS_GLOBAL_COORDS
-#define SCREEN_TO_GLOBAL_X \
-    (dixScreenOrigins[pScreen->myNum].x + rootlessGlobalOffsetX)
-#define SCREEN_TO_GLOBAL_Y \
-    (dixScreenOrigins[pScreen->myNum].y + rootlessGlobalOffsetY)
-#else
-#define SCREEN_TO_GLOBAL_X 0
-#define SCREEN_TO_GLOBAL_Y 0
-#endif
-
-#define DEFINE_ATOM_HELPER(func,atom_name)                      \
-  static Atom func (void) {                                       \
-    static unsigned int generation = 0;                             \
-    static Atom atom;                                           \
-    if (generation != serverGeneration) {                       \
-      generation = serverGeneration;                          \
-      atom = MakeAtom (atom_name, strlen (atom_name), TRUE);  \
-    }                                                           \
-    return atom;                                                \
-  }
-
-DEFINE_ATOM_HELPER (xa_native_window_id, "_NATIVE_WINDOW_ID")
-
-static Bool windows_hidden;
-// TODO - abstract xp functions
-
-#ifdef __APPLE__
-
-// XXX: identical to x_cvt_vptr_to_uint ?
-#define MAKE_WINDOW_ID(x)		((xp_window_id)((size_t)(x)))
-
-void
-RootlessNativeWindowStateChanged (WindowPtr pWin, unsigned int state)
-{
-  RootlessWindowRec *winRec;
-
-  if (pWin == NULL) return;
-
-  winRec = WINREC (pWin);
-  if (winRec == NULL) return;
-
-  winRec->is_offscreen = ((state & XP_WINDOW_STATE_OFFSCREEN) != 0);
-  winRec->is_obscured = ((state & XP_WINDOW_STATE_OBSCURED) != 0);
-  pWin->rootlessUnhittable = winRec->is_offscreen;
-}
-
-void RootlessNativeWindowMoved (WindowPtr pWin) {
-    xp_box bounds;
-    int sx, sy, err;
-    XID vlist[2];
-    Mask mask;
-    ClientPtr pClient;
-    RootlessWindowRec *winRec;
-    
-    winRec = WINREC(pWin);
-    
-    if (xp_get_window_bounds (MAKE_WINDOW_ID(winRec->wid), &bounds) != Success) return;
-    
-    sx = dixScreenOrigins[pWin->drawable.pScreen->myNum].x + darwinMainScreenX;
-    sy = dixScreenOrigins[pWin->drawable.pScreen->myNum].y + darwinMainScreenY;
-    
-    /* Fake up a ConfigureWindow packet to resize the window to the current bounds. */
-    vlist[0] = (INT16) bounds.x1 - sx;
-    vlist[1] = (INT16) bounds.y1 - sy;
-    mask = CWX | CWY;
-    
-    /* pretend we're the owner of the window! */
-    err = dixLookupClient(&pClient, pWin->drawable.id, serverClient, DixUnknownAccess);
-    if(err != Success) {
-        ErrorF("RootlessNativeWindowMoved(): Failed to lookup window: 0x%x\n", (unsigned int)pWin->drawable.id);
-        return;
-    }
-    
-    /* Don't want to do anything to the physical window (avoids 
-     notification-response feedback loops) */
-    
-    no_configure_window = TRUE;
-    ConfigureWindow (pWin, mask, vlist, pClient);
-    no_configure_window = FALSE;
-}
-
-#endif /* __APPLE__ */
-
-/*
- * RootlessCreateWindow
- *  For now, don't create a physical window until either the window is
- *  realized, or we really need it (e.g. to attach VRAM surfaces to).
- *  Do reset the window size so it's not clipped by the root window.
- */
-Bool
-RootlessCreateWindow(WindowPtr pWin)
-{
-    Bool result;
-    RegionRec saveRoot;
-
-    SETWINREC(pWin, NULL);
-    dixSetPrivate(&pWin->devPrivates, rootlessWindowOldPixmapPrivateKey, NULL);
-
-    SCREEN_UNWRAP(pWin->drawable.pScreen, CreateWindow);
-
-    if (!IsRoot(pWin)) {
-        /* win/border size set by DIX, not by wrapped CreateWindow, so
-           correct it here. Don't HUGE_ROOT when pWin is the root! */
-
-        HUGE_ROOT(pWin);
-        SetWinSize(pWin);
-        SetBorderSize(pWin);
-    }
-
-    result = pWin->drawable.pScreen->CreateWindow(pWin);
-
-    if (pWin->parent) {
-        NORMAL_ROOT(pWin);
-    }
-
-    SCREEN_WRAP(pWin->drawable.pScreen, CreateWindow);
-
-    return result;
-}
-
-
-/*
- * RootlessDestroyFrame
- *  Destroy the physical window associated with the given window.
- */
-static void
-RootlessDestroyFrame(WindowPtr pWin, RootlessWindowPtr winRec)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    SCREENREC(pScreen)->imp->DestroyFrame(winRec->wid);
-
-#ifdef ROOTLESS_TRACK_DAMAGE
-    REGION_UNINIT(pScreen, &winRec->damage);
-#endif
-
-    xfree(winRec);
-    SETWINREC(pWin, NULL);
-}
-
-
-/*
- * RootlessDestroyWindow
- *  Destroy the physical window associated with the given window.
- */
-Bool
-RootlessDestroyWindow(WindowPtr pWin)
-{
-    RootlessWindowRec *winRec = WINREC(pWin);
-    Bool result;
-
-    if (winRec != NULL) {
-        RootlessDestroyFrame(pWin, winRec);
-    }
-
-    SCREEN_UNWRAP(pWin->drawable.pScreen, DestroyWindow);
-    result = pWin->drawable.pScreen->DestroyWindow(pWin);
-    SCREEN_WRAP(pWin->drawable.pScreen, DestroyWindow);
-
-    return result;
-}
-
-
-
-static Bool
-RootlessGetShape(WindowPtr pWin, RegionPtr pShape)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    /* 
-     * Avoid a warning.  
-     * REGION_NULL and the other macros don't actually seem to use pScreen.
-     */
-    (void)pScreen; 
-
-    if (wBoundingShape(pWin) == NULL)
-        return FALSE;
-
-    /* wBoundingShape is relative to *inner* origin of window.
-       Translate by borderWidth to get the outside-relative position. */
-
-    REGION_NULL(pScreen, pShape);
-    REGION_COPY(pScreen, pShape, wBoundingShape(pWin));
-    REGION_TRANSLATE(pScreen, pShape, pWin->borderWidth, pWin->borderWidth);
-
-    return TRUE;
-}
-
-
-/*
- * RootlessReshapeFrame
- *  Set the frame shape.
- */
-static void RootlessReshapeFrame(WindowPtr pWin)
-{
-    RootlessWindowRec *winRec = WINREC(pWin);
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RegionRec newShape;
-    RegionPtr pShape;
-
-    // If the window is not yet framed, do nothing
-    if (winRec == NULL)
-        return;
-
-    if (IsRoot(pWin))
-        return;
-
-    RootlessStopDrawing(pWin, FALSE);
-
-    pShape = RootlessGetShape(pWin, &newShape) ? &newShape : NULL;
-
-#ifdef ROOTLESSDEBUG
-    RL_DEBUG_MSG("reshaping...");
-    if (pShape != NULL) {
-        RL_DEBUG_MSG("numrects %d, extents %d %d %d %d ",
-                     REGION_NUM_RECTS(&newShape),
-                     newShape.extents.x1, newShape.extents.y1,
-                     newShape.extents.x2, newShape.extents.y2);
-    } else {
-        RL_DEBUG_MSG("no shape ");
-    }
-#endif
-
-    SCREENREC(pScreen)->imp->ReshapeFrame(winRec->wid, pShape);
-
-    if (pShape != NULL)
-        REGION_UNINIT(pScreen, &newShape);
-}
-
-
-/*
- * RootlessSetShape
- *  Shape is usually set before a window is mapped and the window will
- *  not have a frame associated with it. In this case, the frame will be
- *  shaped when the window is framed.
- */
-void
-RootlessSetShape(WindowPtr pWin)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    SCREEN_UNWRAP(pScreen, SetShape);
-    pScreen->SetShape(pWin);
-    SCREEN_WRAP(pScreen, SetShape);
-
-    RootlessReshapeFrame(pWin);
-}
-
-
-
-/* Disallow ParentRelative background on top-level windows
-   because the root window doesn't really have the right background.
- */
-Bool
-RootlessChangeWindowAttributes(WindowPtr pWin, unsigned long vmask)
-{
-    Bool result;
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    RL_DEBUG_MSG("change window attributes start ");
-
-    SCREEN_UNWRAP(pScreen, ChangeWindowAttributes);
-    result = pScreen->ChangeWindowAttributes(pWin, vmask);
-    SCREEN_WRAP(pScreen, ChangeWindowAttributes);
-
-    if (WINREC(pWin)) {
-        // disallow ParentRelative background state
-        if (pWin->backgroundState == ParentRelative) {
-            XID pixel = 0;
-            ChangeWindowAttributes(pWin, CWBackPixel, &pixel, serverClient);
-        }
-    }
-
-    RL_DEBUG_MSG("change window attributes end\n");
-    return result;
-}
-
-
-/*
- * RootlessPositionWindow
- *  This is a hook for when DIX moves or resizes a window.
- *  Update the frame position now although the physical window is moved
- *  in RootlessMoveWindow. (x, y) are *inside* position. After this,
- *  mi and fb are expecting the pixmap to be at the new location.
- */
-Bool
-RootlessPositionWindow(WindowPtr pWin, int x, int y)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RootlessWindowRec *winRec = WINREC(pWin);
-    Bool result;
-
-    RL_DEBUG_MSG("positionwindow start (win 0x%x @ %i, %i)\n", pWin, x, y);
-
-    if (winRec) {
-        if (winRec->is_drawing) {
-            // Reset frame's pixmap and move it to the new position.
-            int bw = wBorderWidth(pWin);
-
-            winRec->pixmap->devPrivate.ptr = winRec->pixelData;
-            SetPixmapBaseToScreen(winRec->pixmap, x - bw, y - bw);
-
-#ifdef ROOTLESS_TRACK_DAMAGE
-            // Move damaged region to correspond to new window position
-            if (REGION_NOTEMPTY(pScreen, &winRec->damage)) {
-                REGION_TRANSLATE(pScreen, &winRec->damage,
-                                 x - bw - winRec->x,
-                                 y - bw - winRec->y);
-            }
-#endif
-        }
-    }
-
-    SCREEN_UNWRAP(pScreen, PositionWindow);
-    result = pScreen->PositionWindow(pWin, x, y);
-    SCREEN_WRAP(pScreen, PositionWindow);
-
-    RL_DEBUG_MSG("positionwindow end\n");
-    return result;
-}
-
-
-/*
- * RootlessInitializeFrame
- *  Initialize some basic attributes of the frame. Note that winRec
- *  may already have valid data in it, so don't overwrite anything
- *  valuable.
- */
-static void
-RootlessInitializeFrame(WindowPtr pWin, RootlessWindowRec *winRec)
-{
-    DrawablePtr d = &pWin->drawable;
-    int bw = wBorderWidth(pWin);
-
-    winRec->win = pWin;
-
-    winRec->x = d->x - bw;
-    winRec->y = d->y - bw;
-    winRec->width = d->width + 2*bw;
-    winRec->height = d->height + 2*bw;
-    winRec->borderWidth = bw;
-
-#ifdef ROOTLESS_TRACK_DAMAGE
-    REGION_NULL(pScreen, &winRec->damage);
-#endif
-}
-
-/*
- * RootlessEnsureFrame
- *  Make sure the given window is framed. If the window doesn't have a
- *  physical window associated with it, attempt to create one. If that
- *  is unsuccessful, return NULL.
- */
-static RootlessWindowRec *
-RootlessEnsureFrame(WindowPtr pWin)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RootlessWindowRec *winRec;
-    RegionRec shape;
-    RegionPtr pShape = NULL;
-
-    if (WINREC(pWin) != NULL)
-        return WINREC(pWin);
-
-    if (!IsTopLevel(pWin) && !IsRoot(pWin))
-        return NULL;
-
-    if (pWin->drawable.class != InputOutput)
-        return NULL;
-
-    winRec = xalloc(sizeof(RootlessWindowRec));
-
-    if (!winRec)
-        return NULL;
-
-    RootlessInitializeFrame(pWin, winRec);
-
-    winRec->is_drawing = FALSE;
-    winRec->is_reorder_pending = FALSE;
-    winRec->pixmap = NULL;
-    winRec->wid = NULL;
-    winRec->level = 0;
-
-    SETWINREC(pWin, winRec);
-
-    // Set the frame's shape if the window is shaped
-    if (RootlessGetShape(pWin, &shape))
-        pShape = &shape;
-
-    RL_DEBUG_MSG("creating frame ");
-
-    if (!SCREENREC(pScreen)->imp->CreateFrame(winRec, pScreen,
-                                              winRec->x + SCREEN_TO_GLOBAL_X,
-                                              winRec->y + SCREEN_TO_GLOBAL_Y,
-                                              pShape))
-    {
-        RL_DEBUG_MSG("implementation failed to create frame!\n");
-        xfree(winRec);
-        SETWINREC(pWin, NULL);
-        return NULL;
-    }
-
-    if (pWin->drawable.depth == 8)
-      RootlessFlushWindowColormap(pWin);
-
-    if (pShape != NULL)
-        REGION_UNINIT(pScreen, &shape);
-
-    return winRec;
-}
-
-
-/*
- * RootlessRealizeWindow
- *  The frame is usually created here and not in CreateWindow so that
- *  windows do not eat memory until they are realized.
- */
-Bool
-RootlessRealizeWindow(WindowPtr pWin)
-{
-    Bool result;
-    RegionRec saveRoot;
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    RL_DEBUG_MSG("realizewindow start (win 0x%x) ", pWin);
-
-    if ((IsTopLevel(pWin) && pWin->drawable.class == InputOutput)) {
-        RootlessWindowRec *winRec;
-
-        winRec = RootlessEnsureFrame(pWin);
-        if (winRec == NULL)
-            return FALSE;
-
-        winRec->is_reorder_pending = TRUE;
-
-        RL_DEBUG_MSG("Top level window ");
-
-        // Disallow ParentRelative background state on top-level windows.
-        // This might have been set before the window was mapped.
-        if (pWin->backgroundState == ParentRelative) {
-            XID pixel = 0;
-            ChangeWindowAttributes(pWin, CWBackPixel, &pixel, serverClient);
-        }
-    }
-
-    if (!IsRoot(pWin)) HUGE_ROOT(pWin);
-    SCREEN_UNWRAP(pScreen, RealizeWindow);
-    result = pScreen->RealizeWindow(pWin);
-    SCREEN_WRAP(pScreen, RealizeWindow);
-    if (!IsRoot(pWin)) NORMAL_ROOT(pWin);
-
-    RL_DEBUG_MSG("realizewindow end\n");
-    return result;
-}
-
-
-/*
- * RootlessFrameForWindow
- *  Returns the frame ID for the physical window displaying the given window. 
- *  If CREATE is true and the window has no frame, attempt to create one.
- */
-RootlessFrameID
-RootlessFrameForWindow(WindowPtr pWin, Bool create)
-{
-    WindowPtr pTopWin;
-    RootlessWindowRec *winRec;
-
-    pTopWin = TopLevelParent(pWin);
-    if (pTopWin == NULL)
-        return NULL;
-
-    winRec = WINREC(pTopWin);
-
-    if (winRec == NULL && create && pWin->drawable.class == InputOutput) {
-        winRec = RootlessEnsureFrame(pTopWin);
-    }
-
-    if (winRec == NULL)
-        return NULL;
-
-    return winRec->wid;
-}
-
-
-/*
- * RootlessUnrealizeWindow
- *  Unmap the physical window.
- */
-Bool
-RootlessUnrealizeWindow(WindowPtr pWin)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RootlessWindowRec *winRec = WINREC(pWin);
-    Bool result;
-
-    RL_DEBUG_MSG("unrealizewindow start ");
-
-    if (winRec) {
-        RootlessStopDrawing(pWin, FALSE);
-
-        SCREENREC(pScreen)->imp->UnmapFrame(winRec->wid);
-
-        winRec->is_reorder_pending = FALSE;
-    }
-
-    SCREEN_UNWRAP(pScreen, UnrealizeWindow);
-    result = pScreen->UnrealizeWindow(pWin);
-    SCREEN_WRAP(pScreen, UnrealizeWindow);
-
-    RL_DEBUG_MSG("unrealizewindow end\n");
-    return result;
-}
-
-
-/*
- * RootlessReorderWindow
- *  Reorder the frame associated with the given window so that it's
- *  physically above the window below it in the X stacking order.
- */
-void
-RootlessReorderWindow(WindowPtr pWin)
-{
-    RootlessWindowRec *winRec = WINREC(pWin);
-
-    if (pWin->realized && winRec != NULL && !winRec->is_reorder_pending && !windows_hidden) {
-        WindowPtr newPrevW;
-        RootlessWindowRec *newPrev;
-        RootlessFrameID newPrevID;
-        ScreenPtr pScreen = pWin->drawable.pScreen;
-
-        /* Check if the implementation wants the frame to not be reordered
-           even though the X11 window is restacked. This can be useful if
-           frames are ordered-in with animation so that the reordering is not
-           done until the animation is complete. */
-        if (SCREENREC(pScreen)->imp->DoReorderWindow) {
-            if (!SCREENREC(pScreen)->imp->DoReorderWindow(winRec))
-                return;
-        }
-
-        RootlessStopDrawing(pWin, FALSE);
-
-        /* Find the next window above this one that has a mapped frame. */
-
-        newPrevW = pWin->prevSib;
-        while (newPrevW && (WINREC(newPrevW) == NULL || !newPrevW->realized))
-            newPrevW = newPrevW->prevSib;
-
-        newPrev = newPrevW != NULL ? WINREC(newPrevW) : NULL;
-        newPrevID = newPrev != NULL ? newPrev->wid : 0;
-
-        /* If it exists, reorder the frame above us first. */
-
-        if (newPrev && newPrev->is_reorder_pending) {
-            newPrev->is_reorder_pending = FALSE;
-            RootlessReorderWindow(newPrevW);
-        }
-
-        SCREENREC(pScreen)->imp->RestackFrame(winRec->wid, newPrevID);
-    }
-}
-
-
-/*
- * RootlessRestackWindow
- *  This is a hook for when DIX changes the window stacking order.
- *  The window has already been inserted into its new position in the
- *  DIX window stack. We need to change the order of the physical
- *  window to match.
- */
-void
-RootlessRestackWindow(WindowPtr pWin, WindowPtr pOldNextSib)
-{
-    RegionRec saveRoot;
-    RootlessWindowRec *winRec = WINREC(pWin);
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    RL_DEBUG_MSG("restackwindow start ");
-    if (winRec)
-        RL_DEBUG_MSG("restack top level \n");
-
-    HUGE_ROOT(pWin);
-    SCREEN_UNWRAP(pScreen, RestackWindow);
-
-    if (pScreen->RestackWindow)
-        pScreen->RestackWindow(pWin, pOldNextSib);
-
-    SCREEN_WRAP(pScreen, RestackWindow);
-    NORMAL_ROOT(pWin);
-
-    if (winRec && pWin->viewable) {
-        RootlessReorderWindow(pWin);
-    }
-
-    RL_DEBUG_MSG("restackwindow end\n");
-}
-
-/*
- * Specialized window copy procedures
- */
-
-// Globals needed during window resize and move.
-static pointer gResizeDeathBits = NULL;
-static int gResizeDeathCount = 0;
-static PixmapPtr gResizeDeathPix[2] = {NULL, NULL};
-static BoxRec gResizeDeathBounds[2];
-static CopyWindowProcPtr gResizeOldCopyWindowProc = NULL;
-
-/*
- * RootlessNoCopyWindow
- *  CopyWindow() that doesn't do anything. For MoveWindow() of
- *  top-level windows.
- */
-static void
-RootlessNoCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg,
-                     RegionPtr prgnSrc)
-{
-    // some code expects the region to be translated
-    int dx = ptOldOrg.x - pWin->drawable.x;
-    int dy = ptOldOrg.y - pWin->drawable.y;
-
-    RL_DEBUG_MSG("ROOTLESSNOCOPYWINDOW ");
-
-    REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, -dx, -dy);
-}
-
-
-/*
- * RootlessResizeCopyWindow
- *  CopyWindow used during ResizeWindow for gravity moves. Based on
- *  fbCopyWindow. The original always draws on the root pixmap, which
- *  we don't have. Instead, draw on the parent window's pixmap.
- *  Resize version: the old location's pixels are in gResizeCopyWindowSource.
- */
-static void
-RootlessResizeCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg,
-                         RegionPtr prgnSrc)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RegionRec   rgnDst;
-    int         dx, dy;
-
-    RL_DEBUG_MSG("resizecopywindowFB start (win 0x%x) ", pWin);
-
-    /* Don't unwrap pScreen->CopyWindow.
-       The bogus rewrap with RootlessCopyWindow causes a crash if
-       CopyWindow is called again during the same resize. */
-
-    if (gResizeDeathCount == 0)
-        return;
-
-    RootlessStartDrawing(pWin);
-
-    dx = ptOldOrg.x - pWin->drawable.x;
-    dy = ptOldOrg.y - pWin->drawable.y;
-    REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);
-    REGION_NULL(pScreen, &rgnDst);
-    REGION_INTERSECT(pScreen, &rgnDst, &pWin->borderClip, prgnSrc);
-
-    if (gResizeDeathCount == 1) {
-        /* Simple case, we only have a single source pixmap. */
-
-        fbCopyRegion(&gResizeDeathPix[0]->drawable,
-                     &pScreen->GetWindowPixmap(pWin)->drawable, 0,
-                     &rgnDst, dx, dy, fbCopyWindowProc, 0, 0);
-    }
-    else {
-        int i;
-        RegionRec clip, clipped;
-
-        /* More complex case, N source pixmaps (usually two). So we
-           intersect the destination with each source and copy those bits. */
-
-        for (i = 0; i < gResizeDeathCount; i++) {
-            REGION_INIT(pScreen, &clip, gResizeDeathBounds + 0, 1);
-            REGION_NULL(pScreen, &clipped);
-            REGION_INTERSECT(pScreen, &rgnDst, &clip, &clipped);
-
-            fbCopyRegion(&gResizeDeathPix[i]->drawable,
-                         &pScreen->GetWindowPixmap(pWin)->drawable, 0,
-                         &clipped, dx, dy, fbCopyWindowProc, 0, 0);
-
-            REGION_UNINIT(pScreen, &clipped);
-            REGION_UNINIT(pScreen, &clip);
-        }
-    }
-
-    /* Don't update - resize will update everything */
-    REGION_UNINIT(pScreen, &rgnDst);
-
-    fbValidateDrawable(&pWin->drawable);
-
-    RL_DEBUG_MSG("resizecopywindowFB end\n");
-}
-
-
-/*
- * RootlessCopyWindow
- *  Update *new* location of window. Old location is redrawn with
- *  miPaintWindow. Cloned from fbCopyWindow.
- *  The original always draws on the root pixmap, which we don't have.
- *  Instead, draw on the parent window's pixmap.
- */
-void
-RootlessCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RegionRec   rgnDst;
-    int         dx, dy;
-    BoxPtr extents;
-    int area;
-
-    RL_DEBUG_MSG("copywindowFB start (win 0x%x) ", pWin);
-
-    SCREEN_UNWRAP(pScreen, CopyWindow);
-
-    dx = ptOldOrg.x - pWin->drawable.x;
-    dy = ptOldOrg.y - pWin->drawable.y;
-    REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);
-
-    REGION_NULL(pScreen, &rgnDst);
-    REGION_INTERSECT(pScreen, &rgnDst, &pWin->borderClip, prgnSrc);
-
-    extents = REGION_EXTENTS(pScreen, &rgnDst);
-    area = (extents->x2 - extents->x1) * (extents->y2 - extents->y1);
-
-    /* If the area exceeds threshold, use the implementation's
-       accelerated version. */
-    if (area > rootless_CopyWindow_threshold &&
-        SCREENREC(pScreen)->imp->CopyWindow)
-    {
-        RootlessWindowRec *winRec;
-        WindowPtr top;
-
-        top = TopLevelParent(pWin);
-        if (top == NULL) {
-            RL_DEBUG_MSG("no parent\n");
-            goto out;
-        }
-
-        winRec = WINREC(top);
-        if (winRec == NULL) {
-            RL_DEBUG_MSG("not framed\n");
-            goto out;
-        }
-
-        /* Move region to window local coords */
-        REGION_TRANSLATE(pScreen, &rgnDst, -winRec->x, -winRec->y);
-
-        RootlessStopDrawing(pWin, FALSE);
-
-        SCREENREC(pScreen)->imp->CopyWindow(winRec->wid,
-                                            REGION_NUM_RECTS(&rgnDst),
-                                            REGION_RECTS(&rgnDst),
-                                            dx, dy);
-    }
-    else {
-        RootlessStartDrawing(pWin);
-
-        fbCopyRegion((DrawablePtr) pWin, (DrawablePtr) pWin,
-                     0, &rgnDst, dx, dy, fbCopyWindowProc, 0, 0);
-
-        /* prgnSrc has been translated to dst position */
-        RootlessDamageRegion(pWin, prgnSrc);
-    }
-
-out:
-    REGION_UNINIT(pScreen, &rgnDst);
-    fbValidateDrawable(&pWin->drawable);
-
-    SCREEN_WRAP(pScreen, CopyWindow);
-
-    RL_DEBUG_MSG("copywindowFB end\n");
-}
-
-
-/*
- * Window resize procedures
- */
-
-enum {
-    WIDTH_SMALLER = 1,
-    HEIGHT_SMALLER = 2,
-};
-
-
-/*
- * ResizeWeighting
- *  Choose gravity to avoid local copies. Do that by looking for
- *  a corner that doesn't move _relative to the screen_.
- */
-static inline unsigned int
-ResizeWeighting(int oldX1, int oldY1, int oldX2, int oldY2, int oldBW,
-                int newX1, int newY1, int newX2, int newY2, int newBW)
-{
-#ifdef ROOTLESS_RESIZE_GRAVITY
-    if (newBW != oldBW)
-        return RL_GRAVITY_NONE;
-
-    if (newX1 == oldX1 && newY1 == oldY1)
-        return RL_GRAVITY_NORTH_WEST;
-    else if (newX1 == oldX1 && newY2 == oldY2)
-        return RL_GRAVITY_SOUTH_WEST;
-    else if (newX2 == oldX2 && newY2 == oldY2)
-        return RL_GRAVITY_SOUTH_EAST;
-    else if (newX2 == oldX2 && newY1 == oldY1)
-        return RL_GRAVITY_NORTH_EAST;
-    else
-        return RL_GRAVITY_NONE;
-#else
-    return RL_GRAVITY_NONE;
-#endif
-}
-
-
-/*
- * StartFrameResize
- *  Prepare to resize a top-level window. The old window's pixels are
- *  saved and the implementation is told to change the window size.
- *  (x,y,w,h) is outer frame of window (outside border)
- */
-static Bool
-StartFrameResize(WindowPtr pWin, Bool gravity,
-                 int oldX, int oldY, int oldW, int oldH, int oldBW,
-                 int newX, int newY, int newW, int newH, int newBW)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RootlessWindowRec *winRec = WINREC(pWin);
-    Bool need_window_source = FALSE, resize_after = FALSE;
-
-    BoxRec rect;
-    int oldX2, newX2;
-    int oldY2, newY2;
-    unsigned int weight;
-
-    oldX2 = oldX + oldW, newX2 = newX + newW;
-    oldY2 = oldY + oldH, newY2 = newY + newH;
-
-    /* Decide which resize weighting to use */
-    weight = ResizeWeighting(oldX, oldY, oldW, oldH, oldBW,
-                             newX, newY, newW, newH, newBW);
-
-    /* Compute intersection between old and new rects */
-    rect.x1 = max(oldX, newX);
-    rect.y1 = max(oldY, newY);
-    rect.x2 = min(oldX2, newX2);
-    rect.y2 = min(oldY2, newY2);
-
-    RL_DEBUG_MSG("RESIZE TOPLEVEL WINDOW with gravity %i ", gravity);
-    RL_DEBUG_MSG("%d %d %d %d %d   %d %d %d %d %d\n",
-                 oldX, oldY, oldW, oldH, oldBW,
-                 newX, newY, newW, newH, newBW);
-
-    RootlessRedisplay(pWin);
-
-    /* If gravity is true, then we need to have a way of recovering all
-       the original bits in the window for when X rearranges the contents
-       based on the various gravity settings. The obvious way is to just
-       snapshot the entire backing store before resizing it, but that
-       it slow on large windows.
-
-       So the optimization here is to use the implementation's resize
-       weighting options (if available) to allow us to reason about what
-       is left in the backing store after the resize. We can then only
-       copy what won't be there after the resize, and do a two-stage copy
-       operation.
-
-       Most of these optimizations are only applied when the top-left
-       corner of the window is fixed, since that's the common case. They
-       could probably be extended with some thought. */
-
-    gResizeDeathCount = 0;
-
-    if (gravity && weight == RL_GRAVITY_NORTH_WEST) {
-        unsigned int code = 0;
-
-        /* Top left corner is anchored. We never need to copy the
-           entire window. */
-
-        need_window_source = TRUE;
-
-        /* These comparisons were chosen to avoid setting bits when the sizes
-        are the same. (So the fastest case automatically gets taken when
-        dimensions are unchanging.) */
-
-        if (newW < oldW)
-            code |= WIDTH_SMALLER;
-        if (newH < oldH)
-            code |= HEIGHT_SMALLER;
-
-        if (((code ^ (code >> 1)) & 1) == 0) {
-            /* Both dimensions are either getting larger, or both
-               are getting smaller. No need to copy anything. */
-
-            if (code == (WIDTH_SMALLER | HEIGHT_SMALLER)) {
-                /* Since the window is getting smaller, we can do gravity
-                   repair on it with it's current size, then resize it
-                   afterwards. */
-
-                resize_after = TRUE;
-            }
-
-            gResizeDeathCount = 1;
-        }
-        else {
-            unsigned int copy_rowbytes, Bpp;
-            unsigned int copy_rect_width, copy_rect_height;
-            BoxRec copy_rect;
-
-            /* We can get away with a partial copy. 'rect' is the
-               intersection between old and new bounds, so copy
-               everything to the right of or below the intersection. */
-
-            RootlessStartDrawing(pWin);
-
-            if (code == WIDTH_SMALLER) {
-                copy_rect.x1 = rect.x2;
-                copy_rect.y1 = rect.y1;
-                copy_rect.x2 = oldX2;
-                copy_rect.y2 = oldY2;
-            }
-            else if (code == HEIGHT_SMALLER) {
-                copy_rect.x1 = rect.x1;
-                copy_rect.y1 = rect.y2;
-                copy_rect.x2 = oldX2;
-                copy_rect.y2 = oldY2;
-            }
-            else
-                OsAbort();
-
-            Bpp = winRec->win->drawable.bitsPerPixel / 8;
-            copy_rect_width = copy_rect.x2 - copy_rect.x1;
-            copy_rect_height = copy_rect.y2 - copy_rect.y1;
-            copy_rowbytes = ((copy_rect_width * Bpp) + 31) & ~31;
-            gResizeDeathBits = xalloc(copy_rowbytes
-                                      * copy_rect_height);
-
-            if (copy_rect_width * copy_rect_height >
-                        rootless_CopyBytes_threshold &&
-                SCREENREC(pScreen)->imp->CopyBytes)
-            {
-                SCREENREC(pScreen)->imp->CopyBytes(
-                    copy_rect_width * Bpp, copy_rect_height,
-                    ((char *) winRec->pixelData)
-                    + ((copy_rect.y1 - oldY) * winRec->bytesPerRow)
-                    + (copy_rect.x1 - oldX) * Bpp, winRec->bytesPerRow,
-                    gResizeDeathBits, copy_rowbytes);
-            } else {
-                fbBlt((FbBits *) (winRec->pixelData
-                      + ((copy_rect.y1 - oldY) * winRec->bytesPerRow)
-                      + (copy_rect.x1 - oldX) * Bpp),
-                      winRec->bytesPerRow / sizeof(FbBits), 0,
-                      (FbBits *) gResizeDeathBits,
-                      copy_rowbytes / sizeof(FbBits), 0,
-                      copy_rect_width * Bpp, copy_rect_height,
-                      GXcopy, FB_ALLONES, Bpp, 0, 0);
-            }
-
-            gResizeDeathBounds[1] = copy_rect;
-            gResizeDeathPix[1]
-                = GetScratchPixmapHeader(pScreen, copy_rect_width,
-                                         copy_rect_height,
-                                         winRec->win->drawable.depth,
-                                         winRec->win->drawable.bitsPerPixel,
-                                         winRec->bytesPerRow,
-                                         (void *) gResizeDeathBits);
-
-            SetPixmapBaseToScreen(gResizeDeathPix[1],
-                                  copy_rect.x1, copy_rect.y1);
-
-            gResizeDeathCount = 2;
-        }
-    }
-    else if (gravity) {
-        /* The general case. Just copy everything. */
-
-        RootlessStartDrawing(pWin);
-
-        gResizeDeathBits = xalloc(winRec->bytesPerRow * winRec->height);
-
-        memcpy(gResizeDeathBits, winRec->pixelData,
-               winRec->bytesPerRow * winRec->height);
-
-        gResizeDeathBounds[0] = (BoxRec) {oldX, oldY, oldX2, oldY2};
-        gResizeDeathPix[0]
-            = GetScratchPixmapHeader(pScreen, winRec->width,
-                                     winRec->height,
-                                     winRec->win->drawable.depth,
-                                     winRec->win->drawable.bitsPerPixel,
-                                     winRec->bytesPerRow,
-                                     (void *) gResizeDeathBits);
-
-        SetPixmapBaseToScreen(gResizeDeathPix[0], oldX, oldY);
-        gResizeDeathCount = 1;
-    }
-
-    RootlessStopDrawing(pWin, FALSE);
-
-    winRec->x = newX;
-    winRec->y = newY;
-    winRec->width = newW;
-    winRec->height = newH;
-    winRec->borderWidth = newBW;
-
-    /* Unless both dimensions are getting smaller, Resize the frame
-       before doing gravity repair */
-
-    if (!resize_after) {
-        SCREENREC(pScreen)->imp->ResizeFrame(winRec->wid, pScreen,
-                                             newX + SCREEN_TO_GLOBAL_X,
-                                             newY + SCREEN_TO_GLOBAL_Y,
-                                             newW, newH, weight);
-    }
-
-    RootlessStartDrawing(pWin);
-
-    /* If necessary, create a source pixmap pointing at the current
-       window bits. */
-
-    if (need_window_source) {
-        gResizeDeathBounds[0] = (BoxRec) {oldX, oldY, oldX2, oldY2};
-        gResizeDeathPix[0]
-            = GetScratchPixmapHeader(pScreen, oldW, oldH,
-                                     winRec->win->drawable.depth,
-                                     winRec->win->drawable.bitsPerPixel,
-                                     winRec->bytesPerRow, winRec->pixelData);
-
-        SetPixmapBaseToScreen(gResizeDeathPix[0], oldX, oldY);
-    }
-
-    /* Use custom CopyWindow when moving gravity bits around
-       ResizeWindow assumes the old window contents are in the same
-       pixmap, but here they're in deathPix instead. */
-
-    if (gravity) {
-        gResizeOldCopyWindowProc = pScreen->CopyWindow;
-        pScreen->CopyWindow = RootlessResizeCopyWindow;
-    }
-
-    /* If we can't rely on the window server preserving the bits we
-       need in the position we need, copy the pixels in the
-       intersection from src to dst. ResizeWindow assumes these pixels
-       are already present when making gravity adjustments. pWin
-       currently has new-sized pixmap but is in old position.
-
-       FIXME: border width change! (?) */
-
-    if (gravity && weight == RL_GRAVITY_NONE) {
-        PixmapPtr src, dst;
-
-        assert(gResizeDeathCount == 1);
-
-        src = gResizeDeathPix[0];
-        dst = pScreen->GetWindowPixmap(pWin);
-
-        RL_DEBUG_MSG("Resize copy rect %d %d %d %d\n",
-                     rect.x1, rect.y1, rect.x2, rect.y2);
-
-        /* rect is the intersection of the old location and new location */
-        if (BOX_NOT_EMPTY(rect) && src != NULL && dst != NULL) {
-            /* The window drawable still has the old frame position, which
-               means that DST doesn't actually point at the origin of our
-               physical backing store when adjusted by the drawable.x,y
-               position. So sneakily adjust it temporarily while copying.. */
-
-            ((PixmapPtr) dst)->devPrivate.ptr = winRec->pixelData;
-            SetPixmapBaseToScreen(dst, newX, newY);
-
-            fbCopyWindowProc(&src->drawable, &dst->drawable, NULL,
-                             &rect, 1, 0, 0, FALSE, FALSE, 0, 0);
-
-            ((PixmapPtr) dst)->devPrivate.ptr = winRec->pixelData;
-            SetPixmapBaseToScreen(dst, oldX, oldY);
-        }
-    }
-
-    return resize_after;
-}
-
-
-static void
-FinishFrameResize(WindowPtr pWin, Bool gravity, int oldX, int oldY,
-                  unsigned int oldW, unsigned int oldH, unsigned int oldBW,
-                  int newX, int newY, unsigned int newW, unsigned int newH,
-                  unsigned int newBW, Bool resize_now)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RootlessWindowRec *winRec = WINREC(pWin);
-    int i;
-
-    RootlessStopDrawing(pWin, FALSE);
-
-    if (resize_now) {
-        unsigned int weight;
-
-        /* We didn't resize anything earlier, so do it now, now that
-           we've finished gravitating the bits. */
-
-        weight = ResizeWeighting(oldX, oldY, oldW, oldH, oldBW,
-                                 newX, newY, newW, newH, newBW);
-
-        SCREENREC(pScreen)->imp->ResizeFrame(winRec->wid, pScreen,
-                                             newX + SCREEN_TO_GLOBAL_X,
-                                             newY + SCREEN_TO_GLOBAL_Y,
-                                             newW, newH, weight);
-    }
-
-    /* Redraw everything. FIXME: there must be times when we don't need
-       to do this. Perhaps when top-left weighting and no gravity? */
-
-    RootlessDamageRect(pWin, -newBW, -newBW, newW, newH);
-
-    for (i = 0; i < 2; i++) {
-        if (gResizeDeathPix[i] != NULL) {
-            FreeScratchPixmapHeader(gResizeDeathPix[i]);
-            gResizeDeathPix[i] = NULL;
-        }
-    }
-
-    if (gResizeDeathBits != NULL) {
-        xfree(gResizeDeathBits);
-        gResizeDeathBits = NULL;
-    }
-
-    if (gravity) {
-        pScreen->CopyWindow = gResizeOldCopyWindowProc;
-    }
-}
-
-
-/*
- * RootlessMoveWindow
- *  If kind==VTOther, window border is resizing (and borderWidth is
- *  already changed!!@#$)  This case works like window resize, not move.
- */
-void
-RootlessMoveWindow(WindowPtr pWin, int x, int y, WindowPtr pSib, VTKind kind)
-{
-    RootlessWindowRec *winRec = WINREC(pWin);
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    CopyWindowProcPtr oldCopyWindowProc = NULL;
-    int oldX = 0, oldY = 0, newX = 0, newY = 0;
-    unsigned int oldW = 0, oldH = 0, oldBW = 0;
-    unsigned int newW = 0, newH = 0, newBW = 0;
-    Bool resize_after = FALSE;
-    RegionRec saveRoot;
-
-    RL_DEBUG_MSG("movewindow start \n");
-
-    if (winRec) {
-        if (kind == VTMove) {
-            oldX = winRec->x;
-            oldY = winRec->y;
-            RootlessRedisplay(pWin);
-            RootlessStartDrawing(pWin);
-        } else {
-            RL_DEBUG_MSG("movewindow border resizing ");
-
-            oldBW = winRec->borderWidth;
-            oldX = winRec->x;
-            oldY = winRec->y;
-            oldW = winRec->width;
-            oldH = winRec->height;
-
-            newBW = wBorderWidth(pWin);
-            newX = x;
-            newY = y;
-            newW = pWin->drawable.width  + 2*newBW;
-            newH = pWin->drawable.height + 2*newBW;
-
-            resize_after = StartFrameResize(pWin, FALSE,
-                                            oldX, oldY, oldW, oldH, oldBW,
-                                            newX, newY, newW, newH, newBW);
-        }
-    }
-
-    HUGE_ROOT(pWin);
-    SCREEN_UNWRAP(pScreen, MoveWindow);
-
-    if (winRec) {
-        oldCopyWindowProc = pScreen->CopyWindow;
-        pScreen->CopyWindow = RootlessNoCopyWindow;
-    }
-    pScreen->MoveWindow(pWin, x, y, pSib, kind);
-    if (winRec) {
-        pScreen->CopyWindow = oldCopyWindowProc;
-    }
-
-    NORMAL_ROOT(pWin);
-    SCREEN_WRAP(pScreen, MoveWindow);
-
-    if (winRec) {
-        if (kind == VTMove) {
-            winRec->x = x;
-            winRec->y = y;
-            RootlessStopDrawing(pWin, FALSE);
-            SCREENREC(pScreen)->imp->MoveFrame(winRec->wid, pScreen,
-                                               x + SCREEN_TO_GLOBAL_X,
-                                               y + SCREEN_TO_GLOBAL_Y);
-        } else {
-            FinishFrameResize(pWin, FALSE, oldX, oldY, oldW, oldH, oldBW,
-                              newX, newY, newW, newH, newBW, resize_after);
-        }
-    }
-
-    RL_DEBUG_MSG("movewindow end\n");
-}
-
-
-/*
- * RootlessResizeWindow
- *  Note: (x, y, w, h) as passed to this procedure don't match the frame
- *  definition. (x,y) is corner of very outer edge, *outside* border.
- *  w,h is width and height *inside* border, *ignoring* border width.
- *  The rect (x, y, w, h) doesn't mean anything. (x, y, w+2*bw, h+2*bw)
- *  is total rect and (x+bw, y+bw, w, h) is inner rect.
- */
-void
-RootlessResizeWindow(WindowPtr pWin, int x, int y,
-                     unsigned int w, unsigned int h, WindowPtr pSib)
-{
-    RootlessWindowRec *winRec = WINREC(pWin);
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    int oldX = 0, oldY = 0, newX = 0, newY = 0;
-    unsigned int oldW = 0, oldH = 0, oldBW = 0, newW = 0, newH = 0, newBW = 0;
-    Bool resize_after = FALSE;
-    RegionRec saveRoot;
-
-    RL_DEBUG_MSG("resizewindow start (win 0x%x) ", pWin);
-    
-    if(pWin->parent) {
-        if (winRec) {
-            oldBW = winRec->borderWidth;
-            oldX = winRec->x;
-            oldY = winRec->y;
-            oldW = winRec->width;
-            oldH = winRec->height;
-
-            newBW = oldBW;
-            newX = x;
-            newY = y;
-            newW = w + 2*newBW;
-            newH = h + 2*newBW;
-
-            resize_after = StartFrameResize(pWin, TRUE,
-                                            oldX, oldY, oldW, oldH, oldBW,
-                                            newX, newY, newW, newH, newBW);
-        }
-
-        HUGE_ROOT(pWin);
-        SCREEN_UNWRAP(pScreen, ResizeWindow);
-        pScreen->ResizeWindow(pWin, x, y, w, h, pSib);
-        SCREEN_WRAP(pScreen, ResizeWindow);
-        NORMAL_ROOT(pWin);
-
-        if (winRec) {
-            FinishFrameResize(pWin, TRUE, oldX, oldY, oldW, oldH, oldBW,
-                              newX, newY, newW, newH, newBW, resize_after);
-        }
-    } else {
-        /* Special case for resizing the root window */
-        BoxRec box;
-
-        pWin->drawable.x = x;
-        pWin->drawable.y = y;
-        pWin->drawable.width = w;
-        pWin->drawable.height = h;
-
-        box.x1 = x; box.y1 = y;
-        box.x2 = x + w; box.y2 = y + h;
-        REGION_UNINIT(pScreen, &pWin->winSize);
-        REGION_INIT(pScreen, &pWin->winSize, &box, 1);
-        REGION_COPY(pScreen, &pWin->borderSize, &pWin->winSize);
-        REGION_COPY(pScreen, &pWin->clipList, &pWin->winSize);
-        REGION_COPY(pScreen, &pWin->borderClip, &pWin->winSize);
-
-        miSendExposures(pWin, &pWin->borderClip,
-                        pWin->drawable.x, pWin->drawable.y);        
-    }
-
-    RL_DEBUG_MSG("resizewindow end\n");
-}
-
-
-/*
- * RootlessRepositionWindow
- *  Called by the implementation when a window needs to be repositioned to
- *  its correct location on the screen. This routine is typically needed
- *  due to changes in the underlying window system, such as a screen layout
- *  change.
- */
-void
-RootlessRepositionWindow(WindowPtr pWin)
-{
-    RootlessWindowRec *winRec = WINREC(pWin);
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    if (winRec == NULL)
-        return;
-
-    RootlessStopDrawing(pWin, FALSE);
-    SCREENREC(pScreen)->imp->MoveFrame(winRec->wid, pScreen,
-                                       winRec->x + SCREEN_TO_GLOBAL_X,
-                                       winRec->y + SCREEN_TO_GLOBAL_Y);
-
-    RootlessReorderWindow(pWin);
-}
-
-
-/*
- * RootlessReparentWindow
- *  Called after a window has been reparented. Generally windows are not
- *  framed until they are mapped. However, a window may be framed early by the
- *  implementation calling RootlessFrameForWindow. (e.g. this could be needed
- *  to attach a VRAM surface to it.) If the window is subsequently reparented
- *  by the window manager before being mapped, we need to give the frame to
- *  the new top-level window.
- */
-void
-RootlessReparentWindow(WindowPtr pWin, WindowPtr pPriorParent)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    RootlessWindowRec *winRec = WINREC(pWin);
-    WindowPtr pTopWin;
-
-    /* Check that window is not top-level now, but used to be. */
-    if (IsRoot(pWin) || IsRoot(pWin->parent)
-        || IsTopLevel(pWin) || winRec == NULL)
-    {
-        goto out;
-    }
-
-    /* If the formerly top-level window has a frame, we want to give the
-       frame to its new top-level parent. If we can't do that, we'll just
-       have to jettison it... */
-
-    pTopWin = TopLevelParent(pWin);
-    assert(pTopWin != pWin);
-    
-    pWin->rootlessUnhittable = FALSE;
-    
-    DeleteProperty (serverClient, pWin, xa_native_window_id ());
-
-    if (WINREC(pTopWin) != NULL) {
-        /* We're screwed. */
-        RootlessDestroyFrame(pWin, winRec);
-    } else {
-        if (!pTopWin->realized && pWin->realized) {
-            SCREENREC(pScreen)->imp->UnmapFrame(winRec->wid);
-        }
-
-        /* Switch the frame record from one to the other. */
-
-        SETWINREC(pWin, NULL);
-        SETWINREC(pTopWin, winRec);
-
-        RootlessInitializeFrame(pTopWin, winRec);
-        RootlessReshapeFrame(pTopWin);
-
-        SCREENREC(pScreen)->imp->ResizeFrame(winRec->wid, pScreen,
-                                             winRec->x + SCREEN_TO_GLOBAL_X,
-                                             winRec->y + SCREEN_TO_GLOBAL_Y,
-                                             winRec->width, winRec->height,
-                                             RL_GRAVITY_NONE);
-
-        if (SCREENREC(pScreen)->imp->SwitchWindow) {
-            SCREENREC(pScreen)->imp->SwitchWindow(winRec, pWin);
-        }
-
-        if (pTopWin->realized && !pWin->realized)
-            winRec->is_reorder_pending = TRUE;
-    }
-
-out:
-    if (SCREENREC(pScreen)->ReparentWindow) {
-        SCREEN_UNWRAP(pScreen, ReparentWindow);
-        pScreen->ReparentWindow(pWin, pPriorParent);
-        SCREEN_WRAP(pScreen, ReparentWindow);
-    }
-}
-
-
-void
-RootlessFlushWindowColormap (WindowPtr pWin)
-{
-  RootlessWindowRec *winRec = WINREC (pWin);
-  ScreenPtr pScreen = pWin->drawable.pScreen;
-
-  if (winRec == NULL)
-    return;
-
-  RootlessStopDrawing (pWin, FALSE);
-
-  if (SCREENREC(pScreen)->imp->UpdateColormap)
-    SCREENREC(pScreen)->imp->UpdateColormap(winRec->wid, pScreen);
-}
-
-/*
- * RootlessChangeBorderWidth
- *  FIXME: untested!
- *  pWin inside corner stays the same; pWin->drawable.[xy] stays the same
- *  Frame moves and resizes.
- */
-void
-RootlessChangeBorderWidth(WindowPtr pWin, unsigned int width)
-{
-    RegionRec saveRoot;
-    Bool resize_after = FALSE;
-
-    RL_DEBUG_MSG("change border width ");
-
-    if (width != wBorderWidth(pWin)) {
-        RootlessWindowRec *winRec = WINREC(pWin);
-        int oldX = 0, oldY = 0, newX = 0, newY = 0;
-        unsigned int oldW = 0, oldH = 0, oldBW = 0;
-        unsigned int newW = 0, newH = 0, newBW = 0;
-
-        if (winRec) {
-            oldBW = winRec->borderWidth;
-            oldX = winRec->x;
-            oldY = winRec->y;
-            oldW = winRec->width;
-            oldH = winRec->height;
-
-            newBW = width;
-            newX = pWin->drawable.x - newBW;
-            newY = pWin->drawable.y - newBW;
-            newW = pWin->drawable.width  + 2*newBW;
-            newH = pWin->drawable.height + 2*newBW;
-
-            resize_after = StartFrameResize(pWin, FALSE,
-                                            oldX, oldY, oldW, oldH, oldBW,
-                                            newX, newY, newW, newH, newBW);
-        }
-
-        HUGE_ROOT(pWin);
-        SCREEN_UNWRAP(pWin->drawable.pScreen, ChangeBorderWidth);
-        pWin->drawable.pScreen->ChangeBorderWidth(pWin, width);
-        SCREEN_WRAP(pWin->drawable.pScreen, ChangeBorderWidth);
-        NORMAL_ROOT(pWin);
-
-        if (winRec) {
-            FinishFrameResize(pWin, FALSE, oldX, oldY, oldW, oldH, oldBW,
-                              newX, newY, newW, newH, newBW, resize_after);
-        }
-    }
-
-    RL_DEBUG_MSG("change border width end\n");
-}
-
-/*
- * RootlessOrderAllWindows
- * Brings all X11 windows to the top of the window stack
- * (i.e in front of Aqua windows) -- called when X11.app is given focus
- */
-void
-RootlessOrderAllWindows (void)
-{
-    int i;
-    WindowPtr pWin;
-
-    if (windows_hidden)
-        return;    
-
-    RL_DEBUG_MSG("RootlessOrderAllWindows() ");
-    for (i = 0; i < screenInfo.numScreens; i++) {
-      if (screenInfo.screens[i] == NULL) continue;
-      pWin = WindowTable[i];
-      if (pWin == NULL) continue;
-      
-      for (pWin = pWin->firstChild; pWin != NULL; pWin = pWin->nextSib) {
-	if (!pWin->realized) continue;
-	if (RootlessEnsureFrame(pWin) == NULL) continue;
-	RootlessReorderWindow (pWin);
-      }
-    }
-    RL_DEBUG_MSG("RootlessOrderAllWindows() done");
-}
-
-void
-RootlessEnableRoot (ScreenPtr pScreen)
-{
-    WindowPtr pRoot;
-    pRoot = WindowTable[pScreen->myNum];
-    
-    RootlessEnsureFrame (pRoot);
-    (*pScreen->ClearToBackground) (pRoot, 0, 0, 0, 0, TRUE);
-    RootlessReorderWindow (pRoot);
-}
-
-void
-RootlessDisableRoot (ScreenPtr pScreen)
-{
-    WindowPtr pRoot;
-    RootlessWindowRec *winRec;
-
-    pRoot = WindowTable[pScreen->myNum];
-    winRec = WINREC (pRoot);
-
-    if (NULL == winRec)
-	return;
-           
-    RootlessDestroyFrame (pRoot, winRec);
-    DeleteProperty (serverClient, pRoot, xa_native_window_id ());
-}
-
-void
-RootlessHideAllWindows (void)
-{
-    int i;
-    ScreenPtr pScreen;
-    WindowPtr pWin;
-    RootlessWindowRec *winRec;
-    
-    if (windows_hidden)
-        return;
-    
-    windows_hidden = TRUE;
-    
-    for (i = 0; i < screenInfo.numScreens; i++)
-    {
-        pScreen = screenInfo.screens[i];
-        pWin = WindowTable[i];
-        if (pScreen == NULL || pWin == NULL)
-            continue;
-        
-        for (pWin = pWin->firstChild; pWin != NULL; pWin = pWin->nextSib)
-        {
-            if (!pWin->realized)
-                continue;
-            
-            RootlessStopDrawing (pWin, FALSE);
-            
-            winRec = WINREC (pWin);
-            if (winRec != NULL)
-            {
-              if (SCREENREC(pScreen)->imp->HideWindow)
-                SCREENREC(pScreen)->imp->HideWindow(winRec->wid);
-            }
-        }
-    }
-}
-
-void
-RootlessShowAllWindows (void)
-{
-    int i;
-    ScreenPtr pScreen;
-    WindowPtr pWin;
-    RootlessWindowRec *winRec;
-    
-    if (!windows_hidden)
-        return;
-    
-    windows_hidden = FALSE;
-    
-    for (i = 0; i < screenInfo.numScreens; i++)
-    {
-        pScreen = screenInfo.screens[i];
-        pWin = WindowTable[i];
-        if (pScreen == NULL || pWin == NULL)
-            continue;
-        
-        for (pWin = pWin->firstChild; pWin != NULL; pWin = pWin->nextSib)
-        {
-            if (!pWin->realized)
-                continue;
-            
-            winRec = RootlessEnsureFrame (pWin);
-            if (winRec == NULL)
-                continue;
-            
-            RootlessReorderWindow (pWin);
-        }
-        
-        RootlessScreenExpose (pScreen);
-    }
-}
-
-/*
- * SetPixmapOfAncestors
- *  Set the Pixmaps on all ParentRelative windows up the ancestor chain.
- */
-void
-RootlessSetPixmapOfAncestors(WindowPtr pWin)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    WindowPtr topWin = TopLevelParent(pWin);
-    RootlessWindowRec *topWinRec = WINREC(topWin);
-    
-    while (pWin->backgroundState == ParentRelative) {
-        if (pWin == topWin) {
-            // disallow ParentRelative background state on top level
-            XID pixel = 0;
-            ChangeWindowAttributes(pWin, CWBackPixel, &pixel, serverClient);
-            RL_DEBUG_MSG("Cleared ParentRelative on 0x%x.\n", pWin);
-            break;
-        }
-        
-        pWin = pWin->parent;
-        pScreen->SetWindowPixmap(pWin, topWinRec->pixmap);
-    }
-}
-
+/*

+ * Rootless window management

+ */

+/*

+ * Copyright (c) 2001 Greg Parker. All Rights Reserved.

+ * Copyright (c) 2002-2004 Torrey T. Lyons. All Rights Reserved.

+ * Copyright (c) 2002 Apple Computer, 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 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 ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

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

+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ *

+ * Except as contained in this notice, the name(s) of the above copyright

+ * holders shall not be used in advertising or otherwise to promote the sale,

+ * use or other dealings in this Software without prior written authorization.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <stddef.h> /* For NULL */

+#include <limits.h> /* For CHAR_BIT */

+#include <assert.h>

+#include <X11/Xatom.h>

+#ifdef __APPLE__

+#include <Xplugin.h>

+#include "mi.h"

+#include "pixmapstr.h"

+#include "windowstr.h"

+//#include <X11/extensions/applewm.h>

+extern int darwinMainScreenX, darwinMainScreenY;

+extern Bool no_configure_window;

+#endif

+#include "fb.h"

+

+#include "rootlessCommon.h"

+#include "rootlessWindow.h"

+

+#ifdef ROOTLESS_GLOBAL_COORDS

+#define SCREEN_TO_GLOBAL_X \

+    (dixScreenOrigins[pScreen->myNum].x + rootlessGlobalOffsetX)

+#define SCREEN_TO_GLOBAL_Y \

+    (dixScreenOrigins[pScreen->myNum].y + rootlessGlobalOffsetY)

+#else

+#define SCREEN_TO_GLOBAL_X 0

+#define SCREEN_TO_GLOBAL_Y 0

+#endif

+

+#define DEFINE_ATOM_HELPER(func,atom_name)                      \

+  static Atom func (void) {                                       \

+    static unsigned int generation = 0;                             \

+    static Atom atom;                                           \

+    if (generation != serverGeneration) {                       \

+      generation = serverGeneration;                          \

+      atom = MakeAtom (atom_name, strlen (atom_name), TRUE);  \

+    }                                                           \

+    return atom;                                                \

+  }

+

+DEFINE_ATOM_HELPER (xa_native_window_id, "_NATIVE_WINDOW_ID")

+

+static Bool windows_hidden;

+// TODO - abstract xp functions

+

+#ifdef __APPLE__

+

+// XXX: identical to x_cvt_vptr_to_uint ?

+#define MAKE_WINDOW_ID(x)		((xp_window_id)((size_t)(x)))

+

+void

+RootlessNativeWindowStateChanged (WindowPtr pWin, unsigned int state)

+{

+  RootlessWindowRec *winRec;

+

+  if (pWin == NULL) return;

+

+  winRec = WINREC (pWin);

+  if (winRec == NULL) return;

+

+  winRec->is_offscreen = ((state & XP_WINDOW_STATE_OFFSCREEN) != 0);

+  winRec->is_obscured = ((state & XP_WINDOW_STATE_OBSCURED) != 0);

+  pWin->rootlessUnhittable = winRec->is_offscreen;

+}

+

+void RootlessNativeWindowMoved (WindowPtr pWin) {

+    xp_box bounds;

+    int sx, sy, err;

+    XID vlist[2];

+    Mask mask;

+    ClientPtr pClient;

+    RootlessWindowRec *winRec;

+    

+    winRec = WINREC(pWin);

+    

+    if (xp_get_window_bounds (MAKE_WINDOW_ID(winRec->wid), &bounds) != Success) return;

+    

+    sx = dixScreenOrigins[pWin->drawable.pScreen->myNum].x + darwinMainScreenX;

+    sy = dixScreenOrigins[pWin->drawable.pScreen->myNum].y + darwinMainScreenY;

+    

+    /* Fake up a ConfigureWindow packet to resize the window to the current bounds. */

+    vlist[0] = (INT16) bounds.x1 - sx;

+    vlist[1] = (INT16) bounds.y1 - sy;

+    mask = CWX | CWY;

+    

+    /* pretend we're the owner of the window! */

+    err = dixLookupClient(&pClient, pWin->drawable.id, serverClient, DixUnknownAccess);

+    if(err != Success) {

+        ErrorF("RootlessNativeWindowMoved(): Failed to lookup window: 0x%x\n", (unsigned int)pWin->drawable.id);

+        return;

+    }

+    

+    /* Don't want to do anything to the physical window (avoids 

+     notification-response feedback loops) */

+    

+    no_configure_window = TRUE;

+    ConfigureWindow (pWin, mask, vlist, pClient);

+    no_configure_window = FALSE;

+}

+

+#endif /* __APPLE__ */

+

+/*

+ * RootlessCreateWindow

+ *  For now, don't create a physical window until either the window is

+ *  realized, or we really need it (e.g. to attach VRAM surfaces to).

+ *  Do reset the window size so it's not clipped by the root window.

+ */

+Bool

+RootlessCreateWindow(WindowPtr pWin)

+{

+    Bool result;

+    RegionRec saveRoot;

+

+    SETWINREC(pWin, NULL);

+    dixSetPrivate(&pWin->devPrivates, rootlessWindowOldPixmapPrivateKey, NULL);

+

+    SCREEN_UNWRAP(pWin->drawable.pScreen, CreateWindow);

+

+    if (!IsRoot(pWin)) {

+        /* win/border size set by DIX, not by wrapped CreateWindow, so

+           correct it here. Don't HUGE_ROOT when pWin is the root! */

+

+        HUGE_ROOT(pWin);

+        SetWinSize(pWin);

+        SetBorderSize(pWin);

+    }

+

+    result = pWin->drawable.pScreen->CreateWindow(pWin);

+

+    if (pWin->parent) {

+        NORMAL_ROOT(pWin);

+    }

+

+    SCREEN_WRAP(pWin->drawable.pScreen, CreateWindow);

+

+    return result;

+}

+

+

+/*

+ * RootlessDestroyFrame

+ *  Destroy the physical window associated with the given window.

+ */

+static void

+RootlessDestroyFrame(WindowPtr pWin, RootlessWindowPtr winRec)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    SCREENREC(pScreen)->imp->DestroyFrame(winRec->wid);

+

+#ifdef ROOTLESS_TRACK_DAMAGE

+    REGION_UNINIT(pScreen, &winRec->damage);

+#endif

+

+    free(winRec);

+    SETWINREC(pWin, NULL);

+}

+

+

+/*

+ * RootlessDestroyWindow

+ *  Destroy the physical window associated with the given window.

+ */

+Bool

+RootlessDestroyWindow(WindowPtr pWin)

+{

+    RootlessWindowRec *winRec = WINREC(pWin);

+    Bool result;

+

+    if (winRec != NULL) {

+        RootlessDestroyFrame(pWin, winRec);

+    }

+

+    SCREEN_UNWRAP(pWin->drawable.pScreen, DestroyWindow);

+    result = pWin->drawable.pScreen->DestroyWindow(pWin);

+    SCREEN_WRAP(pWin->drawable.pScreen, DestroyWindow);

+

+    return result;

+}

+

+

+

+static Bool

+RootlessGetShape(WindowPtr pWin, RegionPtr pShape)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    /* 

+     * Avoid a warning.  

+     * REGION_NULL and the other macros don't actually seem to use pScreen.

+     */

+    (void)pScreen; 

+

+    if (wBoundingShape(pWin) == NULL)

+        return FALSE;

+

+    /* wBoundingShape is relative to *inner* origin of window.

+       Translate by borderWidth to get the outside-relative position. */

+

+    REGION_NULL(pScreen, pShape);

+    REGION_COPY(pScreen, pShape, wBoundingShape(pWin));

+    REGION_TRANSLATE(pScreen, pShape, pWin->borderWidth, pWin->borderWidth);

+

+    return TRUE;

+}

+

+

+/*

+ * RootlessReshapeFrame

+ *  Set the frame shape.

+ */

+static void RootlessReshapeFrame(WindowPtr pWin)

+{

+    RootlessWindowRec *winRec = WINREC(pWin);

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RegionRec newShape;

+    RegionPtr pShape;

+

+    // If the window is not yet framed, do nothing

+    if (winRec == NULL)

+        return;

+

+    if (IsRoot(pWin))

+        return;

+

+    RootlessStopDrawing(pWin, FALSE);

+

+    pShape = RootlessGetShape(pWin, &newShape) ? &newShape : NULL;

+

+#ifdef ROOTLESSDEBUG

+    RL_DEBUG_MSG("reshaping...");

+    if (pShape != NULL) {

+        RL_DEBUG_MSG("numrects %d, extents %d %d %d %d ",

+                     REGION_NUM_RECTS(&newShape),

+                     newShape.extents.x1, newShape.extents.y1,

+                     newShape.extents.x2, newShape.extents.y2);

+    } else {

+        RL_DEBUG_MSG("no shape ");

+    }

+#endif

+

+    SCREENREC(pScreen)->imp->ReshapeFrame(winRec->wid, pShape);

+

+    if (pShape != NULL)

+        REGION_UNINIT(pScreen, &newShape);

+}

+

+

+/*

+ * RootlessSetShape

+ *  Shape is usually set before a window is mapped and the window will

+ *  not have a frame associated with it. In this case, the frame will be

+ *  shaped when the window is framed.

+ */

+void

+RootlessSetShape(WindowPtr pWin)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    SCREEN_UNWRAP(pScreen, SetShape);

+    pScreen->SetShape(pWin);

+    SCREEN_WRAP(pScreen, SetShape);

+

+    RootlessReshapeFrame(pWin);

+}

+

+

+

+/* Disallow ParentRelative background on top-level windows

+   because the root window doesn't really have the right background.

+ */

+Bool

+RootlessChangeWindowAttributes(WindowPtr pWin, unsigned long vmask)

+{

+    Bool result;

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    RL_DEBUG_MSG("change window attributes start ");

+

+    SCREEN_UNWRAP(pScreen, ChangeWindowAttributes);

+    result = pScreen->ChangeWindowAttributes(pWin, vmask);

+    SCREEN_WRAP(pScreen, ChangeWindowAttributes);

+

+    if (WINREC(pWin)) {

+        // disallow ParentRelative background state

+        if (pWin->backgroundState == ParentRelative) {

+            XID pixel = 0;

+            ChangeWindowAttributes(pWin, CWBackPixel, &pixel, serverClient);

+        }

+    }

+

+    RL_DEBUG_MSG("change window attributes end\n");

+    return result;

+}

+

+

+/*

+ * RootlessPositionWindow

+ *  This is a hook for when DIX moves or resizes a window.

+ *  Update the frame position now although the physical window is moved

+ *  in RootlessMoveWindow. (x, y) are *inside* position. After this,

+ *  mi and fb are expecting the pixmap to be at the new location.

+ */

+Bool

+RootlessPositionWindow(WindowPtr pWin, int x, int y)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RootlessWindowRec *winRec = WINREC(pWin);

+    Bool result;

+

+    RL_DEBUG_MSG("positionwindow start (win 0x%x @ %i, %i)\n", pWin, x, y);

+

+    if (winRec) {

+        if (winRec->is_drawing) {

+            // Reset frame's pixmap and move it to the new position.

+            int bw = wBorderWidth(pWin);

+

+            winRec->pixmap->devPrivate.ptr = winRec->pixelData;

+            SetPixmapBaseToScreen(winRec->pixmap, x - bw, y - bw);

+

+#ifdef ROOTLESS_TRACK_DAMAGE

+            // Move damaged region to correspond to new window position

+            if (REGION_NOTEMPTY(pScreen, &winRec->damage)) {

+                REGION_TRANSLATE(pScreen, &winRec->damage,

+                                 x - bw - winRec->x,

+                                 y - bw - winRec->y);

+            }

+#endif

+        }

+    }

+

+    SCREEN_UNWRAP(pScreen, PositionWindow);

+    result = pScreen->PositionWindow(pWin, x, y);

+    SCREEN_WRAP(pScreen, PositionWindow);

+

+    RL_DEBUG_MSG("positionwindow end\n");

+    return result;

+}

+

+

+/*

+ * RootlessInitializeFrame

+ *  Initialize some basic attributes of the frame. Note that winRec

+ *  may already have valid data in it, so don't overwrite anything

+ *  valuable.

+ */

+static void

+RootlessInitializeFrame(WindowPtr pWin, RootlessWindowRec *winRec)

+{

+    DrawablePtr d = &pWin->drawable;

+    int bw = wBorderWidth(pWin);

+

+    winRec->win = pWin;

+

+    winRec->x = d->x - bw;

+    winRec->y = d->y - bw;

+    winRec->width = d->width + 2*bw;

+    winRec->height = d->height + 2*bw;

+    winRec->borderWidth = bw;

+

+#ifdef ROOTLESS_TRACK_DAMAGE

+    REGION_NULL(pScreen, &winRec->damage);

+#endif

+}

+

+/*

+ * RootlessEnsureFrame

+ *  Make sure the given window is framed. If the window doesn't have a

+ *  physical window associated with it, attempt to create one. If that

+ *  is unsuccessful, return NULL.

+ */

+static RootlessWindowRec *

+RootlessEnsureFrame(WindowPtr pWin)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RootlessWindowRec *winRec;

+    RegionRec shape;

+    RegionPtr pShape = NULL;

+

+    if (WINREC(pWin) != NULL)

+        return WINREC(pWin);

+

+    if (!IsTopLevel(pWin) && !IsRoot(pWin))

+        return NULL;

+

+    if (pWin->drawable.class != InputOutput)

+        return NULL;

+

+    winRec = malloc(sizeof(RootlessWindowRec));

+

+    if (!winRec)

+        return NULL;

+

+    RootlessInitializeFrame(pWin, winRec);

+

+    winRec->is_drawing = FALSE;

+    winRec->is_reorder_pending = FALSE;

+    winRec->pixmap = NULL;

+    winRec->wid = NULL;

+    winRec->level = 0;

+

+    SETWINREC(pWin, winRec);

+

+    // Set the frame's shape if the window is shaped

+    if (RootlessGetShape(pWin, &shape))

+        pShape = &shape;

+

+    RL_DEBUG_MSG("creating frame ");

+

+    if (!SCREENREC(pScreen)->imp->CreateFrame(winRec, pScreen,

+                                              winRec->x + SCREEN_TO_GLOBAL_X,

+                                              winRec->y + SCREEN_TO_GLOBAL_Y,

+                                              pShape))

+    {

+        RL_DEBUG_MSG("implementation failed to create frame!\n");

+        free(winRec);

+        SETWINREC(pWin, NULL);

+        return NULL;

+    }

+

+    if (pWin->drawable.depth == 8)

+      RootlessFlushWindowColormap(pWin);

+

+    if (pShape != NULL)

+        REGION_UNINIT(pScreen, &shape);

+

+    return winRec;

+}

+

+

+/*

+ * RootlessRealizeWindow

+ *  The frame is usually created here and not in CreateWindow so that

+ *  windows do not eat memory until they are realized.

+ */

+Bool

+RootlessRealizeWindow(WindowPtr pWin)

+{

+    Bool result;

+    RegionRec saveRoot;

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    RL_DEBUG_MSG("realizewindow start (win 0x%x) ", pWin);

+

+    if ((IsTopLevel(pWin) && pWin->drawable.class == InputOutput)) {

+        RootlessWindowRec *winRec;

+

+        winRec = RootlessEnsureFrame(pWin);

+        if (winRec == NULL)

+            return FALSE;

+

+        winRec->is_reorder_pending = TRUE;

+

+        RL_DEBUG_MSG("Top level window ");

+

+        // Disallow ParentRelative background state on top-level windows.

+        // This might have been set before the window was mapped.

+        if (pWin->backgroundState == ParentRelative) {

+            XID pixel = 0;

+            ChangeWindowAttributes(pWin, CWBackPixel, &pixel, serverClient);

+        }

+    }

+

+    if (!IsRoot(pWin)) HUGE_ROOT(pWin);

+    SCREEN_UNWRAP(pScreen, RealizeWindow);

+    result = pScreen->RealizeWindow(pWin);

+    SCREEN_WRAP(pScreen, RealizeWindow);

+    if (!IsRoot(pWin)) NORMAL_ROOT(pWin);

+

+    RL_DEBUG_MSG("realizewindow end\n");

+    return result;

+}

+

+

+/*

+ * RootlessFrameForWindow

+ *  Returns the frame ID for the physical window displaying the given window. 

+ *  If CREATE is true and the window has no frame, attempt to create one.

+ */

+RootlessFrameID

+RootlessFrameForWindow(WindowPtr pWin, Bool create)

+{

+    WindowPtr pTopWin;

+    RootlessWindowRec *winRec;

+

+    pTopWin = TopLevelParent(pWin);

+    if (pTopWin == NULL)

+        return NULL;

+

+    winRec = WINREC(pTopWin);

+

+    if (winRec == NULL && create && pWin->drawable.class == InputOutput) {

+        winRec = RootlessEnsureFrame(pTopWin);

+    }

+

+    if (winRec == NULL)

+        return NULL;

+

+    return winRec->wid;

+}

+

+

+/*

+ * RootlessUnrealizeWindow

+ *  Unmap the physical window.

+ */

+Bool

+RootlessUnrealizeWindow(WindowPtr pWin)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RootlessWindowRec *winRec = WINREC(pWin);

+    Bool result;

+

+    RL_DEBUG_MSG("unrealizewindow start ");

+

+    if (winRec) {

+        RootlessStopDrawing(pWin, FALSE);

+

+        SCREENREC(pScreen)->imp->UnmapFrame(winRec->wid);

+

+        winRec->is_reorder_pending = FALSE;

+    }

+

+    SCREEN_UNWRAP(pScreen, UnrealizeWindow);

+    result = pScreen->UnrealizeWindow(pWin);

+    SCREEN_WRAP(pScreen, UnrealizeWindow);

+

+    RL_DEBUG_MSG("unrealizewindow end\n");

+    return result;

+}

+

+

+/*

+ * RootlessReorderWindow

+ *  Reorder the frame associated with the given window so that it's

+ *  physically above the window below it in the X stacking order.

+ */

+void

+RootlessReorderWindow(WindowPtr pWin)

+{

+    RootlessWindowRec *winRec = WINREC(pWin);

+

+    if (pWin->realized && winRec != NULL && !winRec->is_reorder_pending && !windows_hidden) {

+        WindowPtr newPrevW;

+        RootlessWindowRec *newPrev;

+        RootlessFrameID newPrevID;

+        ScreenPtr pScreen = pWin->drawable.pScreen;

+

+        /* Check if the implementation wants the frame to not be reordered

+           even though the X11 window is restacked. This can be useful if

+           frames are ordered-in with animation so that the reordering is not

+           done until the animation is complete. */

+        if (SCREENREC(pScreen)->imp->DoReorderWindow) {

+            if (!SCREENREC(pScreen)->imp->DoReorderWindow(winRec))

+                return;

+        }

+

+        RootlessStopDrawing(pWin, FALSE);

+

+        /* Find the next window above this one that has a mapped frame. */

+

+        newPrevW = pWin->prevSib;

+        while (newPrevW && (WINREC(newPrevW) == NULL || !newPrevW->realized))

+            newPrevW = newPrevW->prevSib;

+

+        newPrev = newPrevW != NULL ? WINREC(newPrevW) : NULL;

+        newPrevID = newPrev != NULL ? newPrev->wid : 0;

+

+        /* If it exists, reorder the frame above us first. */

+

+        if (newPrev && newPrev->is_reorder_pending) {

+            newPrev->is_reorder_pending = FALSE;

+            RootlessReorderWindow(newPrevW);

+        }

+

+        SCREENREC(pScreen)->imp->RestackFrame(winRec->wid, newPrevID);

+    }

+}

+

+

+/*

+ * RootlessRestackWindow

+ *  This is a hook for when DIX changes the window stacking order.

+ *  The window has already been inserted into its new position in the

+ *  DIX window stack. We need to change the order of the physical

+ *  window to match.

+ */

+void

+RootlessRestackWindow(WindowPtr pWin, WindowPtr pOldNextSib)

+{

+    RegionRec saveRoot;

+    RootlessWindowRec *winRec = WINREC(pWin);

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    RL_DEBUG_MSG("restackwindow start ");

+    if (winRec)

+        RL_DEBUG_MSG("restack top level \n");

+

+    HUGE_ROOT(pWin);

+    SCREEN_UNWRAP(pScreen, RestackWindow);

+

+    if (pScreen->RestackWindow)

+        pScreen->RestackWindow(pWin, pOldNextSib);

+

+    SCREEN_WRAP(pScreen, RestackWindow);

+    NORMAL_ROOT(pWin);

+

+    if (winRec && pWin->viewable) {

+        RootlessReorderWindow(pWin);

+    }

+

+    RL_DEBUG_MSG("restackwindow end\n");

+}

+

+/*

+ * Specialized window copy procedures

+ */

+

+// Globals needed during window resize and move.

+static pointer gResizeDeathBits = NULL;

+static int gResizeDeathCount = 0;

+static PixmapPtr gResizeDeathPix[2] = {NULL, NULL};

+static BoxRec gResizeDeathBounds[2];

+static CopyWindowProcPtr gResizeOldCopyWindowProc = NULL;

+

+/*

+ * RootlessNoCopyWindow

+ *  CopyWindow() that doesn't do anything. For MoveWindow() of

+ *  top-level windows.

+ */

+static void

+RootlessNoCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg,

+                     RegionPtr prgnSrc)

+{

+    // some code expects the region to be translated

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

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

+

+    RL_DEBUG_MSG("ROOTLESSNOCOPYWINDOW ");

+

+    REGION_TRANSLATE(pWin->drawable.pScreen, prgnSrc, -dx, -dy);

+}

+

+

+/*

+ * RootlessResizeCopyWindow

+ *  CopyWindow used during ResizeWindow for gravity moves. Based on

+ *  fbCopyWindow. The original always draws on the root pixmap, which

+ *  we don't have. Instead, draw on the parent window's pixmap.

+ *  Resize version: the old location's pixels are in gResizeCopyWindowSource.

+ */

+static void

+RootlessResizeCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg,

+                         RegionPtr prgnSrc)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RegionRec   rgnDst;

+    int         dx, dy;

+

+    RL_DEBUG_MSG("resizecopywindowFB start (win 0x%x) ", pWin);

+

+    /* Don't unwrap pScreen->CopyWindow.

+       The bogus rewrap with RootlessCopyWindow causes a crash if

+       CopyWindow is called again during the same resize. */

+

+    if (gResizeDeathCount == 0)

+        return;

+

+    RootlessStartDrawing(pWin);

+

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

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

+    REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);

+    REGION_NULL(pScreen, &rgnDst);

+    REGION_INTERSECT(pScreen, &rgnDst, &pWin->borderClip, prgnSrc);

+

+    if (gResizeDeathCount == 1) {

+        /* Simple case, we only have a single source pixmap. */

+

+        fbCopyRegion(&gResizeDeathPix[0]->drawable,

+                     &pScreen->GetWindowPixmap(pWin)->drawable, 0,

+                     &rgnDst, dx, dy, fbCopyWindowProc, 0, 0);

+    }

+    else {

+        int i;

+        RegionRec clip, clipped;

+

+        /* More complex case, N source pixmaps (usually two). So we

+           intersect the destination with each source and copy those bits. */

+

+        for (i = 0; i < gResizeDeathCount; i++) {

+            REGION_INIT(pScreen, &clip, gResizeDeathBounds + 0, 1);

+            REGION_NULL(pScreen, &clipped);

+            REGION_INTERSECT(pScreen, &rgnDst, &clip, &clipped);

+

+            fbCopyRegion(&gResizeDeathPix[i]->drawable,

+                         &pScreen->GetWindowPixmap(pWin)->drawable, 0,

+                         &clipped, dx, dy, fbCopyWindowProc, 0, 0);

+

+            REGION_UNINIT(pScreen, &clipped);

+            REGION_UNINIT(pScreen, &clip);

+        }

+    }

+

+    /* Don't update - resize will update everything */

+    REGION_UNINIT(pScreen, &rgnDst);

+

+    fbValidateDrawable(&pWin->drawable);

+

+    RL_DEBUG_MSG("resizecopywindowFB end\n");

+}

+

+

+/*

+ * RootlessCopyWindow

+ *  Update *new* location of window. Old location is redrawn with

+ *  miPaintWindow. Cloned from fbCopyWindow.

+ *  The original always draws on the root pixmap, which we don't have.

+ *  Instead, draw on the parent window's pixmap.

+ */

+void

+RootlessCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RegionRec   rgnDst;

+    int         dx, dy;

+    BoxPtr extents;

+    int area;

+

+    RL_DEBUG_MSG("copywindowFB start (win 0x%x) ", pWin);

+

+    SCREEN_UNWRAP(pScreen, CopyWindow);

+

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

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

+    REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);

+

+    REGION_NULL(pScreen, &rgnDst);

+    REGION_INTERSECT(pScreen, &rgnDst, &pWin->borderClip, prgnSrc);

+

+    extents = REGION_EXTENTS(pScreen, &rgnDst);

+    area = (extents->x2 - extents->x1) * (extents->y2 - extents->y1);

+

+    /* If the area exceeds threshold, use the implementation's

+       accelerated version. */

+    if (area > rootless_CopyWindow_threshold &&

+        SCREENREC(pScreen)->imp->CopyWindow)

+    {

+        RootlessWindowRec *winRec;

+        WindowPtr top;

+

+        top = TopLevelParent(pWin);

+        if (top == NULL) {

+            RL_DEBUG_MSG("no parent\n");

+            goto out;

+        }

+

+        winRec = WINREC(top);

+        if (winRec == NULL) {

+            RL_DEBUG_MSG("not framed\n");

+            goto out;

+        }

+

+        /* Move region to window local coords */

+        REGION_TRANSLATE(pScreen, &rgnDst, -winRec->x, -winRec->y);

+

+        RootlessStopDrawing(pWin, FALSE);

+

+        SCREENREC(pScreen)->imp->CopyWindow(winRec->wid,

+                                            REGION_NUM_RECTS(&rgnDst),

+                                            REGION_RECTS(&rgnDst),

+                                            dx, dy);

+    }

+    else {

+        RootlessStartDrawing(pWin);

+

+        fbCopyRegion((DrawablePtr) pWin, (DrawablePtr) pWin,

+                     0, &rgnDst, dx, dy, fbCopyWindowProc, 0, 0);

+

+        /* prgnSrc has been translated to dst position */

+        RootlessDamageRegion(pWin, prgnSrc);

+    }

+

+out:

+    REGION_UNINIT(pScreen, &rgnDst);

+    fbValidateDrawable(&pWin->drawable);

+

+    SCREEN_WRAP(pScreen, CopyWindow);

+

+    RL_DEBUG_MSG("copywindowFB end\n");

+}

+

+

+/*

+ * Window resize procedures

+ */

+

+enum {

+    WIDTH_SMALLER = 1,

+    HEIGHT_SMALLER = 2,

+};

+

+

+/*

+ * ResizeWeighting

+ *  Choose gravity to avoid local copies. Do that by looking for

+ *  a corner that doesn't move _relative to the screen_.

+ */

+static inline unsigned int

+ResizeWeighting(int oldX1, int oldY1, int oldX2, int oldY2, int oldBW,

+                int newX1, int newY1, int newX2, int newY2, int newBW)

+{

+#ifdef ROOTLESS_RESIZE_GRAVITY

+    if (newBW != oldBW)

+        return RL_GRAVITY_NONE;

+

+    if (newX1 == oldX1 && newY1 == oldY1)

+        return RL_GRAVITY_NORTH_WEST;

+    else if (newX1 == oldX1 && newY2 == oldY2)

+        return RL_GRAVITY_SOUTH_WEST;

+    else if (newX2 == oldX2 && newY2 == oldY2)

+        return RL_GRAVITY_SOUTH_EAST;

+    else if (newX2 == oldX2 && newY1 == oldY1)

+        return RL_GRAVITY_NORTH_EAST;

+    else

+        return RL_GRAVITY_NONE;

+#else

+    return RL_GRAVITY_NONE;

+#endif

+}

+

+

+/*

+ * StartFrameResize

+ *  Prepare to resize a top-level window. The old window's pixels are

+ *  saved and the implementation is told to change the window size.

+ *  (x,y,w,h) is outer frame of window (outside border)

+ */

+static Bool

+StartFrameResize(WindowPtr pWin, Bool gravity,

+                 int oldX, int oldY, int oldW, int oldH, int oldBW,

+                 int newX, int newY, int newW, int newH, int newBW)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RootlessWindowRec *winRec = WINREC(pWin);

+    Bool need_window_source = FALSE, resize_after = FALSE;

+

+    BoxRec rect;

+    int oldX2, newX2;

+    int oldY2, newY2;

+    unsigned int weight;

+

+    oldX2 = oldX + oldW, newX2 = newX + newW;

+    oldY2 = oldY + oldH, newY2 = newY + newH;

+

+    /* Decide which resize weighting to use */

+    weight = ResizeWeighting(oldX, oldY, oldW, oldH, oldBW,

+                             newX, newY, newW, newH, newBW);

+

+    /* Compute intersection between old and new rects */

+    rect.x1 = max(oldX, newX);

+    rect.y1 = max(oldY, newY);

+    rect.x2 = min(oldX2, newX2);

+    rect.y2 = min(oldY2, newY2);

+

+    RL_DEBUG_MSG("RESIZE TOPLEVEL WINDOW with gravity %i ", gravity);

+    RL_DEBUG_MSG("%d %d %d %d %d   %d %d %d %d %d\n",

+                 oldX, oldY, oldW, oldH, oldBW,

+                 newX, newY, newW, newH, newBW);

+

+    RootlessRedisplay(pWin);

+

+    /* If gravity is true, then we need to have a way of recovering all

+       the original bits in the window for when X rearranges the contents

+       based on the various gravity settings. The obvious way is to just

+       snapshot the entire backing store before resizing it, but that

+       it slow on large windows.

+

+       So the optimization here is to use the implementation's resize

+       weighting options (if available) to allow us to reason about what

+       is left in the backing store after the resize. We can then only

+       copy what won't be there after the resize, and do a two-stage copy

+       operation.

+

+       Most of these optimizations are only applied when the top-left

+       corner of the window is fixed, since that's the common case. They

+       could probably be extended with some thought. */

+

+    gResizeDeathCount = 0;

+

+    if (gravity && weight == RL_GRAVITY_NORTH_WEST) {

+        unsigned int code = 0;

+

+        /* Top left corner is anchored. We never need to copy the

+           entire window. */

+

+        need_window_source = TRUE;

+

+        /* These comparisons were chosen to avoid setting bits when the sizes

+        are the same. (So the fastest case automatically gets taken when

+        dimensions are unchanging.) */

+

+        if (newW < oldW)

+            code |= WIDTH_SMALLER;

+        if (newH < oldH)

+            code |= HEIGHT_SMALLER;

+

+        if (((code ^ (code >> 1)) & 1) == 0) {

+            /* Both dimensions are either getting larger, or both

+               are getting smaller. No need to copy anything. */

+

+            if (code == (WIDTH_SMALLER | HEIGHT_SMALLER)) {

+                /* Since the window is getting smaller, we can do gravity

+                   repair on it with it's current size, then resize it

+                   afterwards. */

+

+                resize_after = TRUE;

+            }

+

+            gResizeDeathCount = 1;

+        }

+        else {

+            unsigned int copy_rowbytes, Bpp;

+            unsigned int copy_rect_width, copy_rect_height;

+            BoxRec copy_rect;

+

+            /* We can get away with a partial copy. 'rect' is the

+               intersection between old and new bounds, so copy

+               everything to the right of or below the intersection. */

+

+            RootlessStartDrawing(pWin);

+

+            if (code == WIDTH_SMALLER) {

+                copy_rect.x1 = rect.x2;

+                copy_rect.y1 = rect.y1;

+                copy_rect.x2 = oldX2;

+                copy_rect.y2 = oldY2;

+            }

+            else if (code == HEIGHT_SMALLER) {

+                copy_rect.x1 = rect.x1;

+                copy_rect.y1 = rect.y2;

+                copy_rect.x2 = oldX2;

+                copy_rect.y2 = oldY2;

+            }

+            else

+                OsAbort();

+

+            Bpp = winRec->win->drawable.bitsPerPixel / 8;

+            copy_rect_width = copy_rect.x2 - copy_rect.x1;

+            copy_rect_height = copy_rect.y2 - copy_rect.y1;

+            copy_rowbytes = ((copy_rect_width * Bpp) + 31) & ~31;

+            gResizeDeathBits = malloc(copy_rowbytes

+                                      * copy_rect_height);

+

+            if (copy_rect_width * copy_rect_height >

+                        rootless_CopyBytes_threshold &&

+                SCREENREC(pScreen)->imp->CopyBytes)

+            {

+                SCREENREC(pScreen)->imp->CopyBytes(

+                    copy_rect_width * Bpp, copy_rect_height,

+                    ((char *) winRec->pixelData)

+                    + ((copy_rect.y1 - oldY) * winRec->bytesPerRow)

+                    + (copy_rect.x1 - oldX) * Bpp, winRec->bytesPerRow,

+                    gResizeDeathBits, copy_rowbytes);

+            } else {

+                fbBlt((FbBits *) (winRec->pixelData

+                      + ((copy_rect.y1 - oldY) * winRec->bytesPerRow)

+                      + (copy_rect.x1 - oldX) * Bpp),

+                      winRec->bytesPerRow / sizeof(FbBits), 0,

+                      (FbBits *) gResizeDeathBits,

+                      copy_rowbytes / sizeof(FbBits), 0,

+                      copy_rect_width * Bpp, copy_rect_height,

+                      GXcopy, FB_ALLONES, Bpp, 0, 0);

+            }

+

+            gResizeDeathBounds[1] = copy_rect;

+            gResizeDeathPix[1]

+                = GetScratchPixmapHeader(pScreen, copy_rect_width,

+                                         copy_rect_height,

+                                         winRec->win->drawable.depth,

+                                         winRec->win->drawable.bitsPerPixel,

+                                         winRec->bytesPerRow,

+                                         (void *) gResizeDeathBits);

+

+            SetPixmapBaseToScreen(gResizeDeathPix[1],

+                                  copy_rect.x1, copy_rect.y1);

+

+            gResizeDeathCount = 2;

+        }

+    }

+    else if (gravity) {

+        /* The general case. Just copy everything. */

+

+        RootlessStartDrawing(pWin);

+

+        gResizeDeathBits = malloc(winRec->bytesPerRow * winRec->height);

+

+        memcpy(gResizeDeathBits, winRec->pixelData,

+               winRec->bytesPerRow * winRec->height);

+

+        gResizeDeathBounds[0] = (BoxRec) {oldX, oldY, oldX2, oldY2};

+        gResizeDeathPix[0]

+            = GetScratchPixmapHeader(pScreen, winRec->width,

+                                     winRec->height,

+                                     winRec->win->drawable.depth,

+                                     winRec->win->drawable.bitsPerPixel,

+                                     winRec->bytesPerRow,

+                                     (void *) gResizeDeathBits);

+

+        SetPixmapBaseToScreen(gResizeDeathPix[0], oldX, oldY);

+        gResizeDeathCount = 1;

+    }

+

+    RootlessStopDrawing(pWin, FALSE);

+

+    winRec->x = newX;

+    winRec->y = newY;

+    winRec->width = newW;

+    winRec->height = newH;

+    winRec->borderWidth = newBW;

+

+    /* Unless both dimensions are getting smaller, Resize the frame

+       before doing gravity repair */

+

+    if (!resize_after) {

+        SCREENREC(pScreen)->imp->ResizeFrame(winRec->wid, pScreen,

+                                             newX + SCREEN_TO_GLOBAL_X,

+                                             newY + SCREEN_TO_GLOBAL_Y,

+                                             newW, newH, weight);

+    }

+

+    RootlessStartDrawing(pWin);

+

+    /* If necessary, create a source pixmap pointing at the current

+       window bits. */

+

+    if (need_window_source) {

+        gResizeDeathBounds[0] = (BoxRec) {oldX, oldY, oldX2, oldY2};

+        gResizeDeathPix[0]

+            = GetScratchPixmapHeader(pScreen, oldW, oldH,

+                                     winRec->win->drawable.depth,

+                                     winRec->win->drawable.bitsPerPixel,

+                                     winRec->bytesPerRow, winRec->pixelData);

+

+        SetPixmapBaseToScreen(gResizeDeathPix[0], oldX, oldY);

+    }

+

+    /* Use custom CopyWindow when moving gravity bits around

+       ResizeWindow assumes the old window contents are in the same

+       pixmap, but here they're in deathPix instead. */

+

+    if (gravity) {

+        gResizeOldCopyWindowProc = pScreen->CopyWindow;

+        pScreen->CopyWindow = RootlessResizeCopyWindow;

+    }

+

+    /* If we can't rely on the window server preserving the bits we

+       need in the position we need, copy the pixels in the

+       intersection from src to dst. ResizeWindow assumes these pixels

+       are already present when making gravity adjustments. pWin

+       currently has new-sized pixmap but is in old position.

+

+       FIXME: border width change! (?) */

+

+    if (gravity && weight == RL_GRAVITY_NONE) {

+        PixmapPtr src, dst;

+

+        assert(gResizeDeathCount == 1);

+

+        src = gResizeDeathPix[0];

+        dst = pScreen->GetWindowPixmap(pWin);

+

+        RL_DEBUG_MSG("Resize copy rect %d %d %d %d\n",

+                     rect.x1, rect.y1, rect.x2, rect.y2);

+

+        /* rect is the intersection of the old location and new location */

+        if (BOX_NOT_EMPTY(rect) && src != NULL && dst != NULL) {

+            /* The window drawable still has the old frame position, which

+               means that DST doesn't actually point at the origin of our

+               physical backing store when adjusted by the drawable.x,y

+               position. So sneakily adjust it temporarily while copying.. */

+

+            ((PixmapPtr) dst)->devPrivate.ptr = winRec->pixelData;

+            SetPixmapBaseToScreen(dst, newX, newY);

+

+            fbCopyWindowProc(&src->drawable, &dst->drawable, NULL,

+                             &rect, 1, 0, 0, FALSE, FALSE, 0, 0);

+

+            ((PixmapPtr) dst)->devPrivate.ptr = winRec->pixelData;

+            SetPixmapBaseToScreen(dst, oldX, oldY);

+        }

+    }

+

+    return resize_after;

+}

+

+

+static void

+FinishFrameResize(WindowPtr pWin, Bool gravity, int oldX, int oldY,

+                  unsigned int oldW, unsigned int oldH, unsigned int oldBW,

+                  int newX, int newY, unsigned int newW, unsigned int newH,

+                  unsigned int newBW, Bool resize_now)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RootlessWindowRec *winRec = WINREC(pWin);

+    int i;

+

+    RootlessStopDrawing(pWin, FALSE);

+

+    if (resize_now) {

+        unsigned int weight;

+

+        /* We didn't resize anything earlier, so do it now, now that

+           we've finished gravitating the bits. */

+

+        weight = ResizeWeighting(oldX, oldY, oldW, oldH, oldBW,

+                                 newX, newY, newW, newH, newBW);

+

+        SCREENREC(pScreen)->imp->ResizeFrame(winRec->wid, pScreen,

+                                             newX + SCREEN_TO_GLOBAL_X,

+                                             newY + SCREEN_TO_GLOBAL_Y,

+                                             newW, newH, weight);

+    }

+

+    /* Redraw everything. FIXME: there must be times when we don't need

+       to do this. Perhaps when top-left weighting and no gravity? */

+

+    RootlessDamageRect(pWin, -newBW, -newBW, newW, newH);

+

+    for (i = 0; i < 2; i++) {

+        if (gResizeDeathPix[i] != NULL) {

+            FreeScratchPixmapHeader(gResizeDeathPix[i]);

+            gResizeDeathPix[i] = NULL;

+        }

+    }

+

+    if (gResizeDeathBits != NULL) {

+        free(gResizeDeathBits);

+        gResizeDeathBits = NULL;

+    }

+

+    if (gravity) {

+        pScreen->CopyWindow = gResizeOldCopyWindowProc;

+    }

+}

+

+

+/*

+ * RootlessMoveWindow

+ *  If kind==VTOther, window border is resizing (and borderWidth is

+ *  already changed!!@#$)  This case works like window resize, not move.

+ */

+void

+RootlessMoveWindow(WindowPtr pWin, int x, int y, WindowPtr pSib, VTKind kind)

+{

+    RootlessWindowRec *winRec = WINREC(pWin);

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    CopyWindowProcPtr oldCopyWindowProc = NULL;

+    int oldX = 0, oldY = 0, newX = 0, newY = 0;

+    unsigned int oldW = 0, oldH = 0, oldBW = 0;

+    unsigned int newW = 0, newH = 0, newBW = 0;

+    Bool resize_after = FALSE;

+    RegionRec saveRoot;

+

+    RL_DEBUG_MSG("movewindow start \n");

+

+    if (winRec) {

+        if (kind == VTMove) {

+            oldX = winRec->x;

+            oldY = winRec->y;

+            RootlessRedisplay(pWin);

+            RootlessStartDrawing(pWin);

+        } else {

+            RL_DEBUG_MSG("movewindow border resizing ");

+

+            oldBW = winRec->borderWidth;

+            oldX = winRec->x;

+            oldY = winRec->y;

+            oldW = winRec->width;

+            oldH = winRec->height;

+

+            newBW = wBorderWidth(pWin);

+            newX = x;

+            newY = y;

+            newW = pWin->drawable.width  + 2*newBW;

+            newH = pWin->drawable.height + 2*newBW;

+

+            resize_after = StartFrameResize(pWin, FALSE,

+                                            oldX, oldY, oldW, oldH, oldBW,

+                                            newX, newY, newW, newH, newBW);

+        }

+    }

+

+    HUGE_ROOT(pWin);

+    SCREEN_UNWRAP(pScreen, MoveWindow);

+

+    if (winRec) {

+        oldCopyWindowProc = pScreen->CopyWindow;

+        pScreen->CopyWindow = RootlessNoCopyWindow;

+    }

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

+    if (winRec) {

+        pScreen->CopyWindow = oldCopyWindowProc;

+    }

+

+    NORMAL_ROOT(pWin);

+    SCREEN_WRAP(pScreen, MoveWindow);

+

+    if (winRec) {

+        if (kind == VTMove) {

+            winRec->x = x;

+            winRec->y = y;

+            RootlessStopDrawing(pWin, FALSE);

+            SCREENREC(pScreen)->imp->MoveFrame(winRec->wid, pScreen,

+                                               x + SCREEN_TO_GLOBAL_X,

+                                               y + SCREEN_TO_GLOBAL_Y);

+        } else {

+            FinishFrameResize(pWin, FALSE, oldX, oldY, oldW, oldH, oldBW,

+                              newX, newY, newW, newH, newBW, resize_after);

+        }

+    }

+

+    RL_DEBUG_MSG("movewindow end\n");

+}

+

+

+/*

+ * RootlessResizeWindow

+ *  Note: (x, y, w, h) as passed to this procedure don't match the frame

+ *  definition. (x,y) is corner of very outer edge, *outside* border.

+ *  w,h is width and height *inside* border, *ignoring* border width.

+ *  The rect (x, y, w, h) doesn't mean anything. (x, y, w+2*bw, h+2*bw)

+ *  is total rect and (x+bw, y+bw, w, h) is inner rect.

+ */

+void

+RootlessResizeWindow(WindowPtr pWin, int x, int y,

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

+{

+    RootlessWindowRec *winRec = WINREC(pWin);

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    int oldX = 0, oldY = 0, newX = 0, newY = 0;

+    unsigned int oldW = 0, oldH = 0, oldBW = 0, newW = 0, newH = 0, newBW = 0;

+    Bool resize_after = FALSE;

+    RegionRec saveRoot;

+

+    RL_DEBUG_MSG("resizewindow start (win 0x%x) ", pWin);

+    

+    if(pWin->parent) {

+        if (winRec) {

+            oldBW = winRec->borderWidth;

+            oldX = winRec->x;

+            oldY = winRec->y;

+            oldW = winRec->width;

+            oldH = winRec->height;

+

+            newBW = oldBW;

+            newX = x;

+            newY = y;

+            newW = w + 2*newBW;

+            newH = h + 2*newBW;

+

+            resize_after = StartFrameResize(pWin, TRUE,

+                                            oldX, oldY, oldW, oldH, oldBW,

+                                            newX, newY, newW, newH, newBW);

+        }

+

+        HUGE_ROOT(pWin);

+        SCREEN_UNWRAP(pScreen, ResizeWindow);

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

+        SCREEN_WRAP(pScreen, ResizeWindow);

+        NORMAL_ROOT(pWin);

+

+        if (winRec) {

+            FinishFrameResize(pWin, TRUE, oldX, oldY, oldW, oldH, oldBW,

+                              newX, newY, newW, newH, newBW, resize_after);

+        }

+    } else {

+        /* Special case for resizing the root window */

+        BoxRec box;

+

+        pWin->drawable.x = x;

+        pWin->drawable.y = y;

+        pWin->drawable.width = w;

+        pWin->drawable.height = h;

+

+        box.x1 = x; box.y1 = y;

+        box.x2 = x + w; box.y2 = y + h;

+        REGION_UNINIT(pScreen, &pWin->winSize);

+        REGION_INIT(pScreen, &pWin->winSize, &box, 1);

+        REGION_COPY(pScreen, &pWin->borderSize, &pWin->winSize);

+        REGION_COPY(pScreen, &pWin->clipList, &pWin->winSize);

+        REGION_COPY(pScreen, &pWin->borderClip, &pWin->winSize);

+

+        miSendExposures(pWin, &pWin->borderClip,

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

+    }

+

+    RL_DEBUG_MSG("resizewindow end\n");

+}

+

+

+/*

+ * RootlessRepositionWindow

+ *  Called by the implementation when a window needs to be repositioned to

+ *  its correct location on the screen. This routine is typically needed

+ *  due to changes in the underlying window system, such as a screen layout

+ *  change.

+ */

+void

+RootlessRepositionWindow(WindowPtr pWin)

+{

+    RootlessWindowRec *winRec = WINREC(pWin);

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    if (winRec == NULL)

+        return;

+

+    RootlessStopDrawing(pWin, FALSE);

+    SCREENREC(pScreen)->imp->MoveFrame(winRec->wid, pScreen,

+                                       winRec->x + SCREEN_TO_GLOBAL_X,

+                                       winRec->y + SCREEN_TO_GLOBAL_Y);

+

+    RootlessReorderWindow(pWin);

+}

+

+

+/*

+ * RootlessReparentWindow

+ *  Called after a window has been reparented. Generally windows are not

+ *  framed until they are mapped. However, a window may be framed early by the

+ *  implementation calling RootlessFrameForWindow. (e.g. this could be needed

+ *  to attach a VRAM surface to it.) If the window is subsequently reparented

+ *  by the window manager before being mapped, we need to give the frame to

+ *  the new top-level window.

+ */

+void

+RootlessReparentWindow(WindowPtr pWin, WindowPtr pPriorParent)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    RootlessWindowRec *winRec = WINREC(pWin);

+    WindowPtr pTopWin;

+

+    /* Check that window is not top-level now, but used to be. */

+    if (IsRoot(pWin) || IsRoot(pWin->parent)

+        || IsTopLevel(pWin) || winRec == NULL)

+    {

+        goto out;

+    }

+

+    /* If the formerly top-level window has a frame, we want to give the

+       frame to its new top-level parent. If we can't do that, we'll just

+       have to jettison it... */

+

+    pTopWin = TopLevelParent(pWin);

+    assert(pTopWin != pWin);

+    

+    pWin->rootlessUnhittable = FALSE;

+    

+    DeleteProperty (serverClient, pWin, xa_native_window_id ());

+

+    if (WINREC(pTopWin) != NULL) {

+        /* We're screwed. */

+        RootlessDestroyFrame(pWin, winRec);

+    } else {

+        if (!pTopWin->realized && pWin->realized) {

+            SCREENREC(pScreen)->imp->UnmapFrame(winRec->wid);

+        }

+

+        /* Switch the frame record from one to the other. */

+

+        SETWINREC(pWin, NULL);

+        SETWINREC(pTopWin, winRec);

+

+        RootlessInitializeFrame(pTopWin, winRec);

+        RootlessReshapeFrame(pTopWin);

+

+        SCREENREC(pScreen)->imp->ResizeFrame(winRec->wid, pScreen,

+                                             winRec->x + SCREEN_TO_GLOBAL_X,

+                                             winRec->y + SCREEN_TO_GLOBAL_Y,

+                                             winRec->width, winRec->height,

+                                             RL_GRAVITY_NONE);

+

+        if (SCREENREC(pScreen)->imp->SwitchWindow) {

+            SCREENREC(pScreen)->imp->SwitchWindow(winRec, pWin);

+        }

+

+        if (pTopWin->realized && !pWin->realized)

+            winRec->is_reorder_pending = TRUE;

+    }

+

+out:

+    if (SCREENREC(pScreen)->ReparentWindow) {

+        SCREEN_UNWRAP(pScreen, ReparentWindow);

+        pScreen->ReparentWindow(pWin, pPriorParent);

+        SCREEN_WRAP(pScreen, ReparentWindow);

+    }

+}

+

+

+void

+RootlessFlushWindowColormap (WindowPtr pWin)

+{

+  RootlessWindowRec *winRec = WINREC (pWin);

+  ScreenPtr pScreen = pWin->drawable.pScreen;

+

+  if (winRec == NULL)

+    return;

+

+  RootlessStopDrawing (pWin, FALSE);

+

+  if (SCREENREC(pScreen)->imp->UpdateColormap)

+    SCREENREC(pScreen)->imp->UpdateColormap(winRec->wid, pScreen);

+}

+

+/*

+ * RootlessChangeBorderWidth

+ *  FIXME: untested!

+ *  pWin inside corner stays the same; pWin->drawable.[xy] stays the same

+ *  Frame moves and resizes.

+ */

+void

+RootlessChangeBorderWidth(WindowPtr pWin, unsigned int width)

+{

+    RegionRec saveRoot;

+    Bool resize_after = FALSE;

+

+    RL_DEBUG_MSG("change border width ");

+

+    if (width != wBorderWidth(pWin)) {

+        RootlessWindowRec *winRec = WINREC(pWin);

+        int oldX = 0, oldY = 0, newX = 0, newY = 0;

+        unsigned int oldW = 0, oldH = 0, oldBW = 0;

+        unsigned int newW = 0, newH = 0, newBW = 0;

+

+        if (winRec) {

+            oldBW = winRec->borderWidth;

+            oldX = winRec->x;

+            oldY = winRec->y;

+            oldW = winRec->width;

+            oldH = winRec->height;

+

+            newBW = width;

+            newX = pWin->drawable.x - newBW;

+            newY = pWin->drawable.y - newBW;

+            newW = pWin->drawable.width  + 2*newBW;

+            newH = pWin->drawable.height + 2*newBW;

+

+            resize_after = StartFrameResize(pWin, FALSE,

+                                            oldX, oldY, oldW, oldH, oldBW,

+                                            newX, newY, newW, newH, newBW);

+        }

+

+        HUGE_ROOT(pWin);

+        SCREEN_UNWRAP(pWin->drawable.pScreen, ChangeBorderWidth);

+        pWin->drawable.pScreen->ChangeBorderWidth(pWin, width);

+        SCREEN_WRAP(pWin->drawable.pScreen, ChangeBorderWidth);

+        NORMAL_ROOT(pWin);

+

+        if (winRec) {

+            FinishFrameResize(pWin, FALSE, oldX, oldY, oldW, oldH, oldBW,

+                              newX, newY, newW, newH, newBW, resize_after);

+        }

+    }

+

+    RL_DEBUG_MSG("change border width end\n");

+}

+

+/*

+ * RootlessOrderAllWindows

+ * Brings all X11 windows to the top of the window stack

+ * (i.e in front of Aqua windows) -- called when X11.app is given focus

+ */

+void

+RootlessOrderAllWindows (void)

+{

+    int i;

+    WindowPtr pWin;

+

+    if (windows_hidden)

+        return;    

+

+    RL_DEBUG_MSG("RootlessOrderAllWindows() ");

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

+      if (screenInfo.screens[i] == NULL) continue;

+      pWin = WindowTable[i];

+      if (pWin == NULL) continue;

+      

+      for (pWin = pWin->firstChild; pWin != NULL; pWin = pWin->nextSib) {

+	if (!pWin->realized) continue;

+	if (RootlessEnsureFrame(pWin) == NULL) continue;

+	RootlessReorderWindow (pWin);

+      }

+    }

+    RL_DEBUG_MSG("RootlessOrderAllWindows() done");

+}

+

+void

+RootlessEnableRoot (ScreenPtr pScreen)

+{

+    WindowPtr pRoot;

+    pRoot = WindowTable[pScreen->myNum];

+    

+    RootlessEnsureFrame (pRoot);

+    (*pScreen->ClearToBackground) (pRoot, 0, 0, 0, 0, TRUE);

+    RootlessReorderWindow (pRoot);

+}

+

+void

+RootlessDisableRoot (ScreenPtr pScreen)

+{

+    WindowPtr pRoot;

+    RootlessWindowRec *winRec;

+

+    pRoot = WindowTable[pScreen->myNum];

+    winRec = WINREC (pRoot);

+

+    if (NULL == winRec)

+	return;

+           

+    RootlessDestroyFrame (pRoot, winRec);

+    DeleteProperty (serverClient, pRoot, xa_native_window_id ());

+}

+

+void

+RootlessHideAllWindows (void)

+{

+    int i;

+    ScreenPtr pScreen;

+    WindowPtr pWin;

+    RootlessWindowRec *winRec;

+    

+    if (windows_hidden)

+        return;

+    

+    windows_hidden = TRUE;

+    

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

+    {

+        pScreen = screenInfo.screens[i];

+        pWin = WindowTable[i];

+        if (pScreen == NULL || pWin == NULL)

+            continue;

+        

+        for (pWin = pWin->firstChild; pWin != NULL; pWin = pWin->nextSib)

+        {

+            if (!pWin->realized)

+                continue;

+            

+            RootlessStopDrawing (pWin, FALSE);

+            

+            winRec = WINREC (pWin);

+            if (winRec != NULL)

+            {

+              if (SCREENREC(pScreen)->imp->HideWindow)

+                SCREENREC(pScreen)->imp->HideWindow(winRec->wid);

+            }

+        }

+    }

+}

+

+void

+RootlessShowAllWindows (void)

+{

+    int i;

+    ScreenPtr pScreen;

+    WindowPtr pWin;

+    RootlessWindowRec *winRec;

+    

+    if (!windows_hidden)

+        return;

+    

+    windows_hidden = FALSE;

+    

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

+    {

+        pScreen = screenInfo.screens[i];

+        pWin = WindowTable[i];

+        if (pScreen == NULL || pWin == NULL)

+            continue;

+        

+        for (pWin = pWin->firstChild; pWin != NULL; pWin = pWin->nextSib)

+        {

+            if (!pWin->realized)

+                continue;

+            

+            winRec = RootlessEnsureFrame (pWin);

+            if (winRec == NULL)

+                continue;

+            

+            RootlessReorderWindow (pWin);

+        }

+        

+        RootlessScreenExpose (pScreen);

+    }

+}

+

+/*

+ * SetPixmapOfAncestors

+ *  Set the Pixmaps on all ParentRelative windows up the ancestor chain.

+ */

+void

+RootlessSetPixmapOfAncestors(WindowPtr pWin)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    WindowPtr topWin = TopLevelParent(pWin);

+    RootlessWindowRec *topWinRec = WINREC(topWin);

+    

+    while (pWin->backgroundState == ParentRelative) {

+        if (pWin == topWin) {

+            // disallow ParentRelative background state on top level

+            XID pixel = 0;

+            ChangeWindowAttributes(pWin, CWBackPixel, &pixel, serverClient);

+            RL_DEBUG_MSG("Cleared ParentRelative on 0x%x.\n", pWin);

+            break;

+        }

+        

+        pWin = pWin->parent;

+        pScreen->SetWindowPixmap(pWin, topWinRec->pixmap);

+    }

+}

+