Synchronised line endinge with release branch

1 files changed, 754 insertions, 754 deletions

diff --git a/xorg-server/miext/rootless/rootlessScreen.c b/xorg-server/miext/rootless/rootlessScreen.c
index 03e3278d3..0801e7206 100644
--- a/xorg-server/miext/rootless/rootlessScreen.c
+++ b/xorg-server/miext/rootless/rootlessScreen.c
@@ -1,754 +1,754 @@
-/*

- * 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

-DevPrivateKeyRec rootlessGCPrivateKeyRec;

-DevPrivateKeyRec rootlessScreenPrivateKeyRec;

-DevPrivateKeyRec rootlessWindowPrivateKeyRec;

-DevPrivateKeyRec rootlessWindowOldPixmapPrivateKeyRec;

-

-/*

- * 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) {

-        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,

-                       unsigned int subWindowMode)

-{

-    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, subWindowMode);

-    }

-    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.y1 + 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 (RegionBroken(&pChild->winSize))

-                        SetWinSize (pChild);

-                    if (RegionBroken(&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;

-        }

-        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 (pScreen->root);

-}

-

-

-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;

-

-    if (!dixRegisterPrivateKey(&rootlessGCPrivateKeyRec, PRIVATE_GC, sizeof(RootlessGCRec)))

-        return FALSE;

-    if (!dixRegisterPrivateKey(&rootlessScreenPrivateKeyRec, PRIVATE_SCREEN, 0))

-        return FALSE;

-    if (!dixRegisterPrivateKey(&rootlessWindowPrivateKeyRec, PRIVATE_WINDOW, 0))

-        return FALSE;

-    if (!dixRegisterPrivateKey(&rootlessWindowOldPixmapPrivateKeyRec, PRIVATE_WINDOW, 0))

-        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]);

-    }

-}

+/*
+ * 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
+DevPrivateKeyRec rootlessGCPrivateKeyRec;
+DevPrivateKeyRec rootlessScreenPrivateKeyRec;
+DevPrivateKeyRec rootlessWindowPrivateKeyRec;
+DevPrivateKeyRec rootlessWindowOldPixmapPrivateKeyRec;
+
+/*
+ * 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) {
+        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,
+                       unsigned int subWindowMode)
+{
+    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, subWindowMode);
+    }
+    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.y1 + 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 (RegionBroken(&pChild->winSize))
+                        SetWinSize (pChild);
+                    if (RegionBroken(&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;
+        }
+        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 (pScreen->root);
+}
+
+
+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;
+
+    if (!dixRegisterPrivateKey(&rootlessGCPrivateKeyRec, PRIVATE_GC, sizeof(RootlessGCRec)))
+        return FALSE;
+    if (!dixRegisterPrivateKey(&rootlessScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
+        return FALSE;
+    if (!dixRegisterPrivateKey(&rootlessWindowPrivateKeyRec, PRIVATE_WINDOW, 0))
+        return FALSE;
+    if (!dixRegisterPrivateKey(&rootlessWindowOldPixmapPrivateKeyRec, PRIVATE_WINDOW, 0))
+        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]);
+    }
+}