Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 1085 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/dmx/dmxwindow.c b/nx-X11/programs/Xserver/hw/dmx/dmxwindow.c
new file mode 100644
index 000000000..25456e228
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/dmx/dmxwindow.c
@@ -0,0 +1,1085 @@
+/* $XFree86$ */
+/*
+ * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina.
+ *
+ * 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 on the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * 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.
+ */
+
+/*
+ * Authors:
+ *   Kevin E. Martin <kem@redhat.com>
+ *
+ */
+
+/** \file
+ * This file provides support for window-related functions. */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#include "dmx.h"
+#include "dmxsync.h"
+#include "dmxwindow.h"
+#include "dmxpixmap.h"
+#include "dmxcmap.h"
+#include "dmxvisual.h"
+#include "dmxinput.h"
+#include "dmxextension.h"
+#ifdef RENDER
+#include "dmxpict.h"
+#endif
+
+#include "windowstr.h"
+
+static void dmxDoRestackWindow(WindowPtr pWindow);
+static void dmxDoChangeWindowAttributes(WindowPtr pWindow,
+					unsigned long *mask,
+					XSetWindowAttributes *attribs);
+
+#ifdef SHAPE
+static void dmxDoSetShape(WindowPtr pWindow);
+#endif
+
+/** Initialize the private area for the window functions. */
+Bool dmxInitWindow(ScreenPtr pScreen)
+{
+    if (!AllocateWindowPrivate(pScreen, dmxWinPrivateIndex,
+			       sizeof(dmxWinPrivRec)))
+	return FALSE;
+
+    return TRUE;
+}
+
+
+Window dmxCreateRootWindow(WindowPtr pWindow)
+{
+    ScreenPtr             pScreen   = pWindow->drawable.pScreen;
+    DMXScreenInfo        *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr         pWinPriv  = DMX_GET_WINDOW_PRIV(pWindow);
+    Window                parent;
+    Visual               *visual;
+    unsigned long         mask;
+    XSetWindowAttributes  attribs;
+    ColormapPtr           pCmap;
+    dmxColormapPrivPtr    pCmapPriv;
+
+    /* Create root window */
+
+    parent = dmxScreen->scrnWin; /* This is our "Screen" window */
+    visual = dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual;
+
+    pCmap = (ColormapPtr)LookupIDByType(wColormap(pWindow), RT_COLORMAP);
+    pCmapPriv = DMX_GET_COLORMAP_PRIV(pCmap);
+
+    mask = CWEventMask | CWBackingStore | CWColormap | CWBorderPixel;
+    attribs.event_mask    = ExposureMask;
+    attribs.backing_store = NotUseful;
+    attribs.colormap      = pCmapPriv->cmap;
+    attribs.border_pixel  = 0;
+
+    /* Incorporate new attributes, if needed */
+    if (pWinPriv->attribMask) {
+	dmxDoChangeWindowAttributes(pWindow, &pWinPriv->attribMask, &attribs);
+	mask |= pWinPriv->attribMask;
+    }
+
+    return XCreateWindow(dmxScreen->beDisplay,
+			 parent,
+			 pWindow->origin.x - wBorderWidth(pWindow),
+			 pWindow->origin.y - wBorderWidth(pWindow),
+			 pWindow->drawable.width,
+			 pWindow->drawable.height,
+			 pWindow->borderWidth,
+			 pWindow->drawable.depth,
+			 pWindow->drawable.class,
+			 visual,
+			 mask,
+			 &attribs);
+}
+
+/** Change the location and size of the "screen" window.  Called from
+ *  #dmxReconfigureScreenWindow(). */
+void dmxResizeScreenWindow(ScreenPtr pScreen,
+			   int x, int y, int w, int h)
+{
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    unsigned int    m;
+    XWindowChanges  c;
+
+    if (!dmxScreen->beDisplay)
+	return;
+
+    /* Handle resizing on back-end server */
+    m = CWX | CWY | CWWidth | CWHeight;
+    c.x = x;
+    c.y = y;
+    c.width = w;
+    c.height = h;
+
+    XConfigureWindow(dmxScreen->beDisplay, dmxScreen->scrnWin, m, &c);
+    dmxSync(dmxScreen, False);
+}
+
+/** Change the location and size of the "root" window.  Called from
+ *  #dmxReconfigureRootWindow(). */
+void dmxResizeRootWindow(WindowPtr pRoot,
+			 int x, int y, int w, int h)
+{
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pRoot->drawable.pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pRoot);
+    unsigned int    m;
+    XWindowChanges  c;
+
+    /* Handle resizing on back-end server */
+    if (dmxScreen->beDisplay) {
+	m = CWX | CWY | CWWidth | CWHeight;
+	c.x = x;
+	c.y = y;
+	c.width = (w > 0) ? w : 1;
+	c.height = (h > 0) ? h : 1;
+
+	XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+    }
+
+    if (w == 0 || h == 0) {
+	if (pWinPriv->mapped) {
+	    if (dmxScreen->beDisplay)
+		XUnmapWindow(dmxScreen->beDisplay, pWinPriv->window);
+	    pWinPriv->mapped = FALSE;
+	}
+    } else if (!pWinPriv->mapped) {
+	if (dmxScreen->beDisplay)
+	    XMapWindow(dmxScreen->beDisplay, pWinPriv->window);
+	pWinPriv->mapped = TRUE;
+    }
+
+    if (dmxScreen->beDisplay)
+	dmxSync(dmxScreen, False);
+}
+
+void dmxGetDefaultWindowAttributes(WindowPtr pWindow,
+				   Colormap *cmap,
+				   Visual **visual)
+{
+    ScreenPtr  pScreen = pWindow->drawable.pScreen;
+
+    if (pWindow->drawable.class != InputOnly &&
+	pWindow->optional &&
+	pWindow->optional->visual != wVisual(pWindow->parent)) {
+
+	/* Find the matching visual */
+	*visual = dmxLookupVisualFromID(pScreen, wVisual(pWindow));
+
+	/* Handle optional colormaps */
+	if (pWindow->optional->colormap) {
+	    ColormapPtr         pCmap;
+	    dmxColormapPrivPtr  pCmapPriv;
+
+	    pCmap = (ColormapPtr)LookupIDByType(wColormap(pWindow),
+						RT_COLORMAP);
+	    pCmapPriv = DMX_GET_COLORMAP_PRIV(pCmap);
+	    *cmap = pCmapPriv->cmap;
+	} else {
+	    *cmap = dmxColormapFromDefaultVisual(pScreen, *visual);
+	}
+    } else {
+	*visual = CopyFromParent;
+	*cmap = (Colormap)0;
+    }
+}
+
+static Window dmxCreateNonRootWindow(WindowPtr pWindow)
+{
+    ScreenPtr             pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo        *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr         pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    Window                parent;
+    unsigned long         mask = 0L;
+    XSetWindowAttributes  attribs;
+    dmxWinPrivPtr         pParentPriv = DMX_GET_WINDOW_PRIV(pWindow->parent);
+
+    /* Create window on back-end server */
+
+    parent = pParentPriv->window;
+
+    /* The parent won't exist if this call to CreateNonRootWindow came
+       from ReparentWindow and the grandparent window has not yet been
+       created */
+    if (!parent) {
+	dmxCreateAndRealizeWindow(pWindow->parent, FALSE);
+	parent = pParentPriv->window;
+    }
+
+    /* Incorporate new attributes, if needed */
+    if (pWinPriv->attribMask) {
+	dmxDoChangeWindowAttributes(pWindow, &pWinPriv->attribMask, &attribs);
+	mask |= pWinPriv->attribMask;
+    }
+
+    /* Add in default attributes */
+    if (pWindow->drawable.class != InputOnly) {
+	mask |= CWBackingStore;
+	attribs.backing_store = NotUseful;
+
+	if (!(mask & CWColormap) && pWinPriv->cmap) {
+	    mask |= CWColormap;
+	    attribs.colormap = pWinPriv->cmap;
+	    if (!(mask & CWBorderPixel)) {
+		mask |= CWBorderPixel;
+		attribs.border_pixel = 0;
+	    }
+	}
+    }
+
+    /* Handle case where subwindows are being mapped, but created out of
+       order -- if current window has a previous sibling, then it cannot
+       be created on top of the stack, so we must restack the windows */
+    pWinPriv->restacked = (pWindow->prevSib != NullWindow);
+
+    return XCreateWindow(dmxScreen->beDisplay,
+			 parent,
+			 pWindow->origin.x - wBorderWidth(pWindow),
+			 pWindow->origin.y - wBorderWidth(pWindow),
+			 pWindow->drawable.width,
+			 pWindow->drawable.height,
+			 pWindow->borderWidth,
+			 pWindow->drawable.depth,
+			 pWindow->drawable.class,
+			 pWinPriv->visual,
+			 mask,
+			 &attribs);
+}
+
+/** This function handles lazy window creation and realization.  Window
+ *  creation is handled by #dmxCreateNonRootWindow().  It also handles
+ *  any stacking changes that have occured since the window was
+ *  originally created by calling #dmxDoRestackWindow().  If the window
+ *  is shaped, the shape is set on the back-end server by calling
+ *  #dmxDoSetShape(), and if the window has pictures (from RENDER)
+ *  associated with it, those pictures are created on the back-end
+ *  server by calling #dmxCreatePictureList().  If \a doSync is TRUE,
+ *  then #dmxSync() is called. */
+void dmxCreateAndRealizeWindow(WindowPtr pWindow, Bool doSync)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+
+    if (!dmxScreen->beDisplay) return;
+
+    pWinPriv->window = dmxCreateNonRootWindow(pWindow);
+    if (pWinPriv->restacked) dmxDoRestackWindow(pWindow);
+#ifdef SHAPE
+    if (pWinPriv->isShaped) dmxDoSetShape(pWindow);
+#endif
+#ifdef RENDER
+    if (pWinPriv->hasPict) dmxCreatePictureList(pWindow);
+#endif
+    if (pWinPriv->mapped) XMapWindow(dmxScreen->beDisplay,
+				      pWinPriv->window);
+    if (doSync) dmxSync(dmxScreen, False);
+}
+
+/** Create \a pWindow on the back-end server.  If the lazy window
+ *  creation optimization is enabled, then the actual creation and
+ *  realization of the window is handled by
+ *  #dmxCreateAndRealizeWindow(). */
+Bool dmxCreateWindow(WindowPtr pWindow)
+{
+    ScreenPtr             pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo        *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr         pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    Bool                  ret = TRUE;
+
+    DMX_UNWRAP(CreateWindow, dmxScreen, pScreen);
+#if 0
+    if (pScreen->CreateWindow)
+	ret = pScreen->CreateWindow(pWindow);
+#endif
+
+    /* Set up the defaults */
+    pWinPriv->window     = (Window)0;
+    pWinPriv->offscreen  = TRUE;
+    pWinPriv->mapped     = FALSE;
+    pWinPriv->restacked  = FALSE;
+    pWinPriv->attribMask = 0;
+#ifdef SHAPE
+    pWinPriv->isShaped   = FALSE;
+#endif
+#ifdef RENDER
+    pWinPriv->hasPict    = FALSE;
+#endif
+#ifdef GLXEXT
+    pWinPriv->swapGroup  = NULL;
+    pWinPriv->barrier    = 0;
+#endif
+
+    if (dmxScreen->beDisplay) {
+	/* Only create the root window at this stage -- non-root windows are
+	   created when they are mapped and are on-screen */
+	if (!pWindow->parent) {
+	    dmxScreen->rootWin = pWinPriv->window
+		= dmxCreateRootWindow(pWindow);
+	    if (dmxScreen->scrnX         != dmxScreen->rootX
+		|| dmxScreen->scrnY      != dmxScreen->rootY
+		|| dmxScreen->scrnWidth  != dmxScreen->rootWidth
+		|| dmxScreen->scrnHeight != dmxScreen->rootHeight) {
+		dmxResizeRootWindow(pWindow,
+				    dmxScreen->rootX,
+				    dmxScreen->rootY,
+				    dmxScreen->rootWidth,
+				    dmxScreen->rootHeight);
+		dmxUpdateScreenResources(screenInfo.screens[dmxScreen->index],
+					 dmxScreen->rootX,
+					 dmxScreen->rootY,
+					 dmxScreen->rootWidth,
+					 dmxScreen->rootHeight);
+		pWindow->origin.x = dmxScreen->rootX;
+		pWindow->origin.y = dmxScreen->rootY;
+	    }
+	} else {
+	    dmxGetDefaultWindowAttributes(pWindow,
+					  &pWinPriv->cmap,
+					  &pWinPriv->visual);
+
+	    if (dmxLazyWindowCreation) {
+		/* Save parent's visual for use later */
+		if (pWinPriv->visual == CopyFromParent)
+		    pWinPriv->visual =
+			dmxLookupVisualFromID(pScreen,
+					      wVisual(pWindow->parent));
+	    } else {
+		pWinPriv->window = dmxCreateNonRootWindow(pWindow);
+	    }
+	}
+
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(CreateWindow, dmxCreateWindow, dmxScreen, pScreen);
+
+    return ret;
+}
+
+/** Destroy \a pWindow on the back-end server. */
+Bool dmxBEDestroyWindow(WindowPtr pWindow)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+
+    if (pWinPriv->window) {
+	XDestroyWindow(dmxScreen->beDisplay, pWinPriv->window);
+	pWinPriv->window = (Window)0;
+	return TRUE;
+    }
+
+    return FALSE;
+}
+
+/** Destroy \a pWindow on the back-end server.  If any RENDER pictures
+    were created, destroy them as well. */
+Bool dmxDestroyWindow(WindowPtr pWindow)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    Bool           ret = TRUE;
+    Bool           needSync = FALSE;
+#ifdef GLXEXT
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+#endif
+
+    DMX_UNWRAP(DestroyWindow, dmxScreen, pScreen);
+
+#ifdef RENDER
+    /* Destroy any picture list associated with this window */
+    needSync |= dmxDestroyPictureList(pWindow);
+#endif
+
+    /* Destroy window on back-end server */
+    needSync |= dmxBEDestroyWindow(pWindow);
+    if (needSync) dmxSync(dmxScreen, FALSE);
+
+#ifdef GLXEXT
+    if (pWinPriv->swapGroup && pWinPriv->windowDestroyed)
+	pWinPriv->windowDestroyed(pWindow);
+#endif
+
+#if 0
+    if (pScreen->DestroyWindow)
+	ret = pScreen->DestroyWindow(pWindow);
+#endif
+    DMX_WRAP(DestroyWindow, dmxDestroyWindow, dmxScreen, pScreen);
+
+    return ret;
+}
+
+/** Change the position of \a pWindow to be \a x, \a y. */
+Bool dmxPositionWindow(WindowPtr pWindow, int x, int y)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    Bool            ret = TRUE;
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    unsigned int    m;
+    XWindowChanges  c;
+
+    DMX_UNWRAP(PositionWindow, dmxScreen, pScreen);
+#if 0
+    if (pScreen->PositionWindow)
+	ret = pScreen->PositionWindow(pWindow, x, y);
+#endif
+
+    /* Determine if the window is completely off the visible portion of
+       the screen */
+    pWinPriv->offscreen = DMX_WINDOW_OFFSCREEN(pWindow);
+
+    /* If the window is now on-screen and it is mapped and it has not
+       been created yet, create it and map it */
+    if (!pWinPriv->window && pWinPriv->mapped && !pWinPriv->offscreen) {
+	dmxCreateAndRealizeWindow(pWindow, TRUE);
+    } else if (pWinPriv->window) {
+	/* Position window on back-end server */
+	m = CWX | CWY | CWWidth | CWHeight;
+	c.x = pWindow->origin.x - wBorderWidth(pWindow);
+	c.y = pWindow->origin.y - wBorderWidth(pWindow);
+	c.width = pWindow->drawable.width;
+	c.height = pWindow->drawable.height;
+	if (pWindow->drawable.class != InputOnly) {
+	    m |= CWBorderWidth;
+	    c.border_width = pWindow->borderWidth;
+	}
+
+	XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(PositionWindow, dmxPositionWindow, dmxScreen, pScreen);
+
+    return ret;
+}
+
+static void dmxDoChangeWindowAttributes(WindowPtr pWindow,
+					unsigned long *mask,
+					XSetWindowAttributes *attribs)
+{
+    dmxPixPrivPtr         pPixPriv;
+
+    if (*mask & CWBackPixmap) {
+	switch (pWindow->backgroundState) {
+	case None:
+	    attribs->background_pixmap = None;
+	    break;
+
+	case ParentRelative:
+	    attribs->background_pixmap = ParentRelative;
+	    break;
+
+	case BackgroundPixmap:
+	    pPixPriv = DMX_GET_PIXMAP_PRIV(pWindow->background.pixmap);
+	    attribs->background_pixmap = pPixPriv->pixmap;
+	    break;
+
+	case BackgroundPixel:
+	    *mask &= ~CWBackPixmap;
+	    break;
+	}
+    }
+
+    if (*mask & CWBackPixel) {
+	if (pWindow->backgroundState == BackgroundPixel)
+	    attribs->background_pixel = pWindow->background.pixel;
+	else
+	    *mask &= ~CWBackPixel;
+    }
+
+    if (*mask & CWBorderPixmap) {
+	if (pWindow->borderIsPixel)
+	    *mask &= ~CWBorderPixmap;
+	else {
+	    pPixPriv = DMX_GET_PIXMAP_PRIV(pWindow->border.pixmap);
+	    attribs->border_pixmap = pPixPriv->pixmap;
+	}
+    }
+
+    if (*mask & CWBorderPixel) {
+	if (pWindow->borderIsPixel)
+	    attribs->border_pixel = pWindow->border.pixel;
+	else
+	    *mask &= ~CWBorderPixel;
+    }
+
+    if (*mask & CWBitGravity)
+	attribs->bit_gravity = pWindow->bitGravity;
+
+    if (*mask & CWWinGravity)
+	*mask &= ~CWWinGravity; /* Handled by dix */
+
+    if (*mask & CWBackingStore)
+	*mask &= ~CWBackingStore; /* Backing store not supported */
+
+    if (*mask & CWBackingPlanes)
+	*mask &= ~CWBackingPlanes; /* Backing store not supported */
+
+    if (*mask & CWBackingPixel)
+	*mask &= ~CWBackingPixel; /* Backing store not supported */
+
+    if (*mask & CWOverrideRedirect)
+	attribs->override_redirect = pWindow->overrideRedirect;
+
+    if (*mask & CWSaveUnder)
+	*mask &= ~CWSaveUnder; /* Save unders not supported */
+
+    if (*mask & CWEventMask)
+	*mask &= ~CWEventMask; /* Events are handled by dix */
+
+    if (*mask & CWDontPropagate)
+	*mask &= ~CWDontPropagate; /* Events are handled by dix */
+
+    if (*mask & CWColormap) {
+	ColormapPtr         pCmap;
+	dmxColormapPrivPtr  pCmapPriv;
+
+	pCmap = (ColormapPtr)LookupIDByType(wColormap(pWindow), RT_COLORMAP);
+	pCmapPriv = DMX_GET_COLORMAP_PRIV(pCmap);
+	attribs->colormap = pCmapPriv->cmap;
+    }
+
+    if (*mask & CWCursor)
+	*mask &= ~CWCursor; /* Handled by the cursor code */
+}
+
+/** Change the window attributes of \a pWindow. */
+Bool dmxChangeWindowAttributes(WindowPtr pWindow, unsigned long mask)
+{
+    ScreenPtr             pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo        *dmxScreen = &dmxScreens[pScreen->myNum];
+    Bool                  ret = TRUE;
+    dmxWinPrivPtr         pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    XSetWindowAttributes  attribs;
+
+    DMX_UNWRAP(ChangeWindowAttributes, dmxScreen, pScreen);
+#if 0
+    if (pScreen->ChangeWindowAttributes)
+	ret = pScreen->ChangeWindowAttributes(pWindow, mask);
+#endif
+
+    /* Change window attribs on back-end server */
+    dmxDoChangeWindowAttributes(pWindow, &mask, &attribs);
+
+    /* Save mask for lazy window creation optimization */
+    pWinPriv->attribMask |= mask;
+
+    if (mask && pWinPriv->window) {
+	XChangeWindowAttributes(dmxScreen->beDisplay, pWinPriv->window,
+				mask, &attribs);
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(ChangeWindowAttributes, dmxChangeWindowAttributes, dmxScreen,
+	     pScreen);
+
+    return ret;
+}
+
+/** Realize \a pWindow on the back-end server.  If the lazy window
+ *  creation optimization is enabled, the window is only realized when
+ *  it at least partially overlaps the screen. */
+Bool dmxRealizeWindow(WindowPtr pWindow)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    Bool           ret = TRUE;
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+
+    DMX_UNWRAP(RealizeWindow, dmxScreen, pScreen);
+#if 0
+    if (pScreen->RealizeWindow)
+	ret = pScreen->RealizeWindow(pWindow);
+#endif
+
+    /* Determine if the window is completely off the visible portion of
+       the screen */
+    pWinPriv->offscreen = DMX_WINDOW_OFFSCREEN(pWindow);
+
+    /* If the window hasn't been created and it's not offscreen, then
+       create it */
+    if (!pWinPriv->window && !pWinPriv->offscreen) {
+	dmxCreateAndRealizeWindow(pWindow, FALSE);
+    }
+
+    if (pWinPriv->window) {
+	/* Realize window on back-end server */
+	XMapWindow(dmxScreen->beDisplay, pWinPriv->window);
+	dmxSync(dmxScreen, False);
+    }
+
+    /* Let the other functions know that the window is now mapped */
+    pWinPriv->mapped = TRUE;
+
+    DMX_WRAP(RealizeWindow, dmxRealizeWindow, dmxScreen, pScreen);
+
+    dmxUpdateWindowInfo(DMX_UPDATE_REALIZE, pWindow);
+    return ret;
+}
+
+/** Unrealize \a pWindow on the back-end server. */
+Bool dmxUnrealizeWindow(WindowPtr pWindow)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    Bool           ret = TRUE;
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+
+    DMX_UNWRAP(UnrealizeWindow, dmxScreen, pScreen);
+#if 0
+    if (pScreen->UnrealizeWindow)
+	ret = pScreen->UnrealizeWindow(pWindow);
+#endif
+
+    if (pWinPriv->window) {
+	/* Unrealize window on back-end server */
+	XUnmapWindow(dmxScreen->beDisplay, pWinPriv->window);
+	dmxSync(dmxScreen, False);
+    }
+
+    /* When unrealized (i.e., unmapped), the window is always considered
+       off of the visible portion of the screen */
+    pWinPriv->offscreen = TRUE;
+    pWinPriv->mapped = FALSE;
+
+#ifdef GLXEXT
+    if (pWinPriv->swapGroup && pWinPriv->windowUnmapped)
+	pWinPriv->windowUnmapped(pWindow);
+#endif
+
+    DMX_WRAP(UnrealizeWindow, dmxUnrealizeWindow, dmxScreen, pScreen);
+
+    dmxUpdateWindowInfo(DMX_UPDATE_UNREALIZE, pWindow);
+    return ret;
+}
+
+static void dmxDoRestackWindow(WindowPtr pWindow)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    WindowPtr       pNextSib = pWindow->nextSib;
+    unsigned int    m;
+    XWindowChanges  c;
+
+    if (pNextSib == NullWindow) {
+	/* Window is at the bottom of the stack */
+	m = CWStackMode;
+	c.sibling = (Window)0;
+	c.stack_mode = Below;
+	XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+    } else {
+	/* Window is not at the bottom of the stack */
+	dmxWinPrivPtr  pNextSibPriv = DMX_GET_WINDOW_PRIV(pNextSib);
+
+	/* Handle case where siblings have not yet been created due to
+           lazy window creation optimization by first finding the next
+           sibling in the sibling list that has been created (if any)
+           and then putting the current window just above that sibling,
+           and if no next siblings have been created yet, then put it at
+           the bottom of the stack (since it might have a previous
+           sibling that should be above it). */
+	while (!pNextSibPriv->window) {
+	    pNextSib = pNextSib->nextSib;
+	    if (pNextSib == NullWindow) {
+		/* Window is at the bottom of the stack */
+		m = CWStackMode;
+		c.sibling = (Window)0;
+		c.stack_mode = Below;
+		XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+		return;
+	    }
+	    pNextSibPriv = DMX_GET_WINDOW_PRIV(pNextSib);
+	}
+
+	m = CWStackMode | CWSibling;
+	c.sibling = pNextSibPriv->window;
+	c.stack_mode = Above;
+	XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+    }
+}
+
+/** Handle window restacking.  The actual restacking occurs in
+ *  #dmxDoRestackWindow(). */
+void dmxRestackWindow(WindowPtr pWindow, WindowPtr pOldNextSib)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+
+    DMX_UNWRAP(RestackWindow, dmxScreen, pScreen);
+#if 0
+    if (pScreen->RestackWindow)
+	pScreen->RestackWindow(pWindow, pOldNextSib);
+#endif
+
+    if (pOldNextSib != pWindow->nextSib) {
+	/* Track restacking for lazy window creation optimization */
+	pWinPriv->restacked = TRUE;
+
+	/* Restack window on back-end server */
+	if (pWinPriv->window) {
+	    dmxDoRestackWindow(pWindow);
+	    dmxSync(dmxScreen, False);
+	}
+    }
+
+    DMX_WRAP(RestackWindow, dmxRestackWindow, dmxScreen, pScreen);
+    dmxUpdateWindowInfo(DMX_UPDATE_RESTACK, pWindow);
+}
+
+static Bool dmxWindowExposurePredicate(Display *dpy, XEvent *ev, XPointer ptr)
+{
+    return (ev->type == Expose && ev->xexpose.window == *(Window *)ptr);
+}
+
+/** Handle exposures on \a pWindow.  Since window exposures are handled
+ *  in DMX, the events that are generated by the back-end server are
+ *  redundant, so we eat them here. */
+void dmxWindowExposures(WindowPtr pWindow, RegionPtr prgn,
+			RegionPtr other_exposed)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    XEvent         ev;
+
+    DMX_UNWRAP(WindowExposures, dmxScreen, pScreen);
+
+    dmxSync(dmxScreen, False);
+
+    if (pWinPriv->window) {
+	while (XCheckIfEvent(dmxScreen->beDisplay, &ev,
+			     dmxWindowExposurePredicate,
+			     (XPointer)&pWinPriv->window)) {
+	    /* Handle expose events -- this should not be necessary
+	       since the base window in which the root window was
+	       created is guaranteed to be on top (override_redirect),
+	       so we should just swallow these events.  If for some
+	       reason the window is not on top, then we'd need to
+	       collect these events and send them to the client later
+	       (e.g., during the block handler as Xnest does). */
+	}
+    }
+
+#if 1
+    if (pScreen->WindowExposures)
+	pScreen->WindowExposures(pWindow, prgn, other_exposed);
+#endif
+    DMX_WRAP(WindowExposures, dmxWindowExposures, dmxScreen, pScreen);
+}
+
+/** Paint background of \a pWindow in \a pRegion. */
+void dmxPaintWindowBackground(WindowPtr pWindow, RegionPtr pRegion, int what)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    BoxPtr         pBox;
+    int            nBox;
+
+    DMX_UNWRAP(PaintWindowBackground, dmxScreen, pScreen);
+#if 0
+    if (pScreen->PaintWindowBackground)
+	pScreen->PaintWindowBackground(pWindow, pRegion, what);
+#endif
+
+    if (pWinPriv->window) {
+	/* Paint window background on back-end server */
+	pBox = REGION_RECTS(pRegion);
+	nBox = REGION_NUM_RECTS(pRegion);
+	while (nBox--) {
+	    XClearArea(dmxScreen->beDisplay, pWinPriv->window,
+		       pBox->x1 - pWindow->drawable.x,
+		       pBox->y1 - pWindow->drawable.y,
+		       pBox->x2 - pBox->x1,
+		       pBox->y2 - pBox->y1,
+		       False);
+	    pBox++;
+	}
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(PaintWindowBackground, dmxPaintWindowBackground, dmxScreen, pScreen);
+}
+
+/** Paint window border for \a pWindow in \a pRegion. */
+void dmxPaintWindowBorder(WindowPtr pWindow, RegionPtr pRegion, int what)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+
+    DMX_UNWRAP(PaintWindowBorder, dmxScreen, pScreen);
+#if 0
+    if (pScreen->PaintWindowBorder)
+	pScreen->PaintWindowBorder(pWindow, pRegion, what);
+#endif
+
+    /* Paint window border on back-end server */
+
+    DMX_WRAP(PaintWindowBorder, dmxPaintWindowBorder, dmxScreen, pScreen);
+}
+
+/** Move \a pWindow on the back-end server.  Determine whether or not it
+ *  is on or offscreen, and realize it if it is newly on screen and the
+ *  lazy window creation optimization is enabled. */
+void dmxCopyWindow(WindowPtr pWindow, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    unsigned int    m;
+    XWindowChanges  c;
+
+    DMX_UNWRAP(CopyWindow, dmxScreen, pScreen);
+#if 0
+    if (pScreen->CopyWindow)
+	pScreen->CopyWindow(pWindow, ptOldOrg, prgnSrc);
+#endif
+
+    /* Determine if the window is completely off the visible portion of
+       the screen */
+    pWinPriv->offscreen = DMX_WINDOW_OFFSCREEN(pWindow);
+
+    /* If the window is now on-screen and it is mapped and it has not
+       been created yet, create it and map it */
+    if (!pWinPriv->window && pWinPriv->mapped && !pWinPriv->offscreen) {
+	dmxCreateAndRealizeWindow(pWindow, TRUE);
+    } else if (pWinPriv->window) {
+	/* Move window on back-end server */
+	m = CWX | CWY | CWWidth | CWHeight;
+	c.x = pWindow->origin.x - wBorderWidth(pWindow);
+	c.y = pWindow->origin.y - wBorderWidth(pWindow);
+	c.width = pWindow->drawable.width;
+	c.height = pWindow->drawable.height;
+
+	XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(CopyWindow, dmxCopyWindow, dmxScreen, pScreen);
+    dmxUpdateWindowInfo(DMX_UPDATE_COPY, pWindow);
+}
+
+/** Resize \a pWindow on the back-end server.  Determine whether or not
+ *  it is on or offscreen, and realize it if it is newly on screen and
+ *  the lazy window creation optimization is enabled. */
+void dmxResizeWindow(WindowPtr pWindow, int x, int y,
+		     unsigned int w, unsigned int h, WindowPtr pSib)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    dmxWinPrivPtr   pSibPriv;
+    unsigned int    m;
+    XWindowChanges  c;
+
+    if (pSib)
+	pSibPriv = DMX_GET_WINDOW_PRIV(pSib);
+
+    DMX_UNWRAP(ResizeWindow, dmxScreen, pScreen);
+#if 1
+    if (pScreen->ResizeWindow)
+	pScreen->ResizeWindow(pWindow, x, y, w, h, pSib);
+#endif
+
+    /* Determine if the window is completely off the visible portion of
+       the screen */
+    pWinPriv->offscreen = DMX_WINDOW_OFFSCREEN(pWindow);
+
+    /* If the window is now on-screen and it is mapped and it has not
+       been created yet, create it and map it */
+    if (!pWinPriv->window && pWinPriv->mapped && !pWinPriv->offscreen) {
+	dmxCreateAndRealizeWindow(pWindow, TRUE);
+    } else if (pWinPriv->window) {
+	/* Handle resizing on back-end server */
+	m = CWX | CWY | CWWidth | CWHeight;
+	c.x = pWindow->origin.x - wBorderWidth(pWindow);
+	c.y = pWindow->origin.y - wBorderWidth(pWindow);
+	c.width = pWindow->drawable.width;
+	c.height = pWindow->drawable.height;
+
+	XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(ResizeWindow, dmxResizeWindow, dmxScreen, pScreen);
+    dmxUpdateWindowInfo(DMX_UPDATE_RESIZE, pWindow);
+}
+
+/** Reparent \a pWindow on the back-end server. */
+void dmxReparentWindow(WindowPtr pWindow, WindowPtr pPriorParent)
+{
+    ScreenPtr      pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr  pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    dmxWinPrivPtr  pParentPriv = DMX_GET_WINDOW_PRIV(pWindow->parent);
+
+    DMX_UNWRAP(ReparentWindow, dmxScreen, pScreen);
+#if 0
+    if (pScreen->ReparentWindow)
+	pScreen->ReparentWindow(pWindow, pPriorParent);
+#endif
+
+    if (pWinPriv->window) {
+	if (!pParentPriv->window) {
+	    dmxCreateAndRealizeWindow(pWindow->parent, FALSE);
+	}
+
+	/* Handle reparenting on back-end server */
+	XReparentWindow(dmxScreen->beDisplay, pWinPriv->window,
+			pParentPriv->window,
+			pWindow->origin.x - wBorderWidth(pWindow),
+			pWindow->origin.x - wBorderWidth(pWindow));
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(ReparentWindow, dmxReparentWindow, dmxScreen, pScreen);
+    dmxUpdateWindowInfo(DMX_UPDATE_REPARENT, pWindow);
+}
+
+/** Change border width for \a pWindow to \a width pixels. */
+void dmxChangeBorderWidth(WindowPtr pWindow, unsigned int width)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    unsigned int    m;
+    XWindowChanges  c;
+
+    DMX_UNWRAP(ChangeBorderWidth, dmxScreen, pScreen);
+#if 1
+    if (pScreen->ChangeBorderWidth)
+	pScreen->ChangeBorderWidth(pWindow, width);
+#endif
+
+    /* NOTE: Do we need to check for on/off screen here? */
+
+    if (pWinPriv->window) {
+	/* Handle border width change on back-end server */
+	m = CWBorderWidth;
+	c.border_width = width;
+
+	XConfigureWindow(dmxScreen->beDisplay, pWinPriv->window, m, &c);
+	dmxSync(dmxScreen, False);
+    }
+
+    DMX_WRAP(ChangeBorderWidth, dmxChangeBorderWidth, dmxScreen, pScreen);
+}
+
+#ifdef SHAPE
+static void dmxDoSetShape(WindowPtr pWindow)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+    int             nBox;
+    BoxPtr          pBox;
+    int             nRect;
+    XRectangle     *pRect;
+    XRectangle     *pRectFirst;
+
+    /* First, set the bounding shape */
+    if (wBoundingShape(pWindow)) {
+	pBox = REGION_RECTS(wBoundingShape(pWindow));
+	nRect = nBox = REGION_NUM_RECTS(wBoundingShape(pWindow));
+	pRectFirst = pRect = xalloc(nRect * sizeof(*pRect));
+	while (nBox--) {
+	    pRect->x      = pBox->x1;
+	    pRect->y      = pBox->y1;
+	    pRect->width  = pBox->x2 - pBox->x1;
+	    pRect->height = pBox->y2 - pBox->y1;
+	    pBox++;
+	    pRect++;
+	}
+	XShapeCombineRectangles(dmxScreen->beDisplay, pWinPriv->window,
+				ShapeBounding, 0, 0,
+				pRectFirst, nRect,
+				ShapeSet, YXBanded);
+	xfree(pRectFirst);
+    } else {
+	XShapeCombineMask(dmxScreen->beDisplay, pWinPriv->window,
+			  ShapeBounding, 0, 0, None, ShapeSet);
+    }
+
+    /* Next, set the clip shape */
+    if (wClipShape(pWindow)) {
+	pBox = REGION_RECTS(wClipShape(pWindow));
+	nRect = nBox = REGION_NUM_RECTS(wClipShape(pWindow));
+	pRectFirst = pRect = xalloc(nRect * sizeof(*pRect));
+	while (nBox--) {
+	    pRect->x      = pBox->x1;
+	    pRect->y      = pBox->y1;
+	    pRect->width  = pBox->x2 - pBox->x1;
+	    pRect->height = pBox->y2 - pBox->y1;
+	    pBox++;
+	    pRect++;
+	}
+	XShapeCombineRectangles(dmxScreen->beDisplay, pWinPriv->window,
+				ShapeClip, 0, 0,
+				pRectFirst, nRect,
+				ShapeSet, YXBanded);
+	xfree(pRectFirst);
+    } else {
+	XShapeCombineMask(dmxScreen->beDisplay, pWinPriv->window,
+			  ShapeClip, 0, 0, None, ShapeSet);
+    }
+
+    if (XShapeInputSelected(dmxScreen->beDisplay, pWinPriv->window)) {
+	ErrorF("Input selected for window %x on Screen %d\n",
+	       (unsigned int)pWinPriv->window, pScreen->myNum);
+    }
+}
+
+/** Set shape of \a pWindow on the back-end server. */
+void dmxSetShape(WindowPtr pWindow)
+{
+    ScreenPtr       pScreen = pWindow->drawable.pScreen;
+    DMXScreenInfo  *dmxScreen = &dmxScreens[pScreen->myNum];
+    dmxWinPrivPtr   pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
+
+    DMX_UNWRAP(SetShape, dmxScreen, pScreen);
+#if 1
+    if (pScreen->SetShape)
+	pScreen->SetShape(pWindow);
+#endif
+
+    if (pWinPriv->window) {
+	/* Handle setting the current shape on the back-end server */
+	dmxDoSetShape(pWindow);
+	dmxSync(dmxScreen, False);
+    } else {
+	pWinPriv->isShaped = TRUE;
+    }
+
+    DMX_WRAP(SetShape, dmxSetShape, dmxScreen, pScreen);
+}
+#endif