initial state (xorg-server 1.10.2)

1 files changed, 1637 insertions, 0 deletions

diff --git a/miext/rootless/rootlessWindow.c b/miext/rootless/rootlessWindow.c
new file mode 100644
index 0000000..c4a32aa
--- /dev/null
+++ b/miext/rootless/rootlessWindow.c
@@ -0,0 +1,1637 @@
+/*
+ * 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"
+
+#define SCREEN_TO_GLOBAL_X \
+    (pScreen->x + rootlessGlobalOffsetX)
+#define SCREEN_TO_GLOBAL_Y \
+    (pScreen->y + rootlessGlobalOffsetY)
+
+#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 = pWin->drawable.pScreen->x + darwinMainScreenX;
+    sy = pWin->drawable.pScreen->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)
+{
+    SCREENREC(pWin->drawable.pScreen)->imp->DestroyFrame(winRec->wid);
+    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)
+{
+    if (wBoundingShape(pWin) == NULL)
+        return FALSE;
+
+    /* wBoundingShape is relative to *inner* origin of window.
+       Translate by borderWidth to get the outside-relative position. */
+
+    RegionNull(pShape);
+    RegionCopy(pShape, wBoundingShape(pWin));
+    RegionTranslate(pShape, pWin->borderWidth, pWin->borderWidth);
+
+    return TRUE;
+}
+
+
+/*
+ * RootlessReshapeFrame
+ *  Set the frame shape.
+ */
+static void RootlessReshapeFrame(WindowPtr pWin)
+{
+    RootlessWindowRec *winRec = WINREC(pWin);
+    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 ",
+                     RegionNumRects(&newShape),
+                     newShape.extents.x1, newShape.extents.y1,
+                     newShape.extents.x2, newShape.extents.y2);
+    } else {
+        RL_DEBUG_MSG("no shape ");
+    }
+#endif
+
+    SCREENREC(pWin->drawable.pScreen)->imp->ReshapeFrame(winRec->wid, pShape);
+
+    if (pShape != NULL)
+        RegionUninit(&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, int kind)
+{
+    ScreenPtr pScreen = pWin->drawable.pScreen;
+
+    SCREEN_UNWRAP(pScreen, SetShape);
+    pScreen->SetShape(pWin, kind);
+    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);
+        }
+    }
+
+    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;
+}
+
+/*
+ * 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)
+        RegionUninit(&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. 
+         * Only include cases where the windows are in the same category of
+         * hittability to ensure offscreen windows dont get restacked
+         * relative to onscreen ones (but that the offscreen ones maintain
+         * their stacking order if they are explicitly asked to Reorder
+         */
+
+        newPrevW = pWin->prevSib;
+        while (newPrevW && (WINREC(newPrevW) == NULL || !newPrevW->realized || newPrevW->rootlessUnhittable != pWin->rootlessUnhittable))
+            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 ");
+
+    RegionTranslate(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;
+    RegionTranslate(prgnSrc, -dx, -dy);
+    RegionNull(&rgnDst);
+    RegionIntersect(&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++) {
+            RegionInit(&clip, gResizeDeathBounds + 0, 1);
+            RegionNull(&clipped);
+            RegionIntersect(&rgnDst, &clip, &clipped);
+
+            fbCopyRegion(&gResizeDeathPix[i]->drawable,
+                         &pScreen->GetWindowPixmap(pWin)->drawable, 0,
+                         &clipped, dx, dy, fbCopyWindowProc, 0, 0);
+
+            RegionUninit(&clipped);
+            RegionUninit(&clip);
+        }
+    }
+
+    /* Don't update - resize will update everything */
+    RegionUninit(&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;
+    RegionTranslate(prgnSrc, -dx, -dy);
+
+    RegionNull(&rgnDst);
+    RegionIntersect(&rgnDst, &pWin->borderClip, prgnSrc);
+
+    extents = RegionExtents(&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 */
+        RegionTranslate(&rgnDst, -winRec->x, -winRec->y);
+
+        RootlessStopDrawing(pWin, FALSE);
+
+        SCREENREC(pScreen)->imp->CopyWindow(winRec->wid,
+                                            RegionNumRects(&rgnDst),
+                                            RegionRects(&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:
+    RegionUninit(&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;
+        }
+    }
+
+    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;
+        RegionUninit(&pWin->winSize);
+        RegionInit(&pWin->winSize, &box, 1);
+        RegionCopy(&pWin->borderSize, &pWin->winSize);
+        RegionCopy(&pWin->clipList, &pWin->winSize);
+        RegionCopy(&pWin->borderClip, &pWin->winSize);
+
+        if (winRec) {
+            SCREENREC(pScreen)->imp->ResizeFrame(winRec->wid, pScreen,
+                                                 x + SCREEN_TO_GLOBAL_X,
+                                                 y + SCREEN_TO_GLOBAL_Y,
+                                                 w, h, RL_GRAVITY_NONE);
+        }
+
+        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 (Bool include_unhitable)
+{
+    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 = screenInfo.screens[i]->root;
+      if (pWin == NULL) continue;
+      
+      for (pWin = pWin->firstChild; pWin != NULL; pWin = pWin->nextSib) {
+	if (!pWin->realized) continue;
+	if (RootlessEnsureFrame(pWin) == NULL) continue;
+        if (!include_unhitable && pWin->rootlessUnhittable) continue;
+	RootlessReorderWindow (pWin);
+      }
+    }
+    RL_DEBUG_MSG("RootlessOrderAllWindows() done");
+}
+
+void
+RootlessEnableRoot (ScreenPtr pScreen)
+{
+    WindowPtr pRoot;
+    pRoot = pScreen->root;
+    
+    RootlessEnsureFrame (pRoot);
+    (*pScreen->ClearToBackground) (pRoot, 0, 0, 0, 0, TRUE);
+    RootlessReorderWindow (pRoot);
+}
+
+void
+RootlessDisableRoot (ScreenPtr pScreen)
+{
+    WindowPtr pRoot;
+    RootlessWindowRec *winRec;
+
+    pRoot = pScreen->root;
+    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];
+	if (pScreen == NULL)
+	    continue;
+	pWin = pScreen->root;
+	if (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];
+	if (pScreen == NULL)
+	    continue;
+	pWin = pScreen->root;
+	if (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);
+    }
+}
+