massive reduction of unneeded files

1 files changed, 0 insertions, 1497 deletions

diff --git a/nx-X11/programs/Xserver/hw/dmx/dmxextension.c b/nx-X11/programs/Xserver/hw/dmx/dmxextension.c
deleted file mode 100644
index feadb5e31..000000000
--- a/nx-X11/programs/Xserver/hw/dmx/dmxextension.c
+++ /dev/null
@@ -1,1497 +0,0 @@
-/* $XFree86$ */
-/*
- * Copyright 2003-2004 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.
- */
-
-/*
- * Author:
- *   Rickard E. (Rik) Faith <faith@redhat.com>
- *   Kevin E. Martin <kem@redhat.com>
- *
- */
-
-/** \file
- * This file provides the only interface to the X server extension support
- * in programs/Xserver/Xext.  Those programs should only include dmxext.h
- */
-
-#ifdef HAVE_DMX_CONFIG_H
-#include <dmx-config.h>
-#endif
-
-#include "dmx.h"
-#include "dmxinit.h"
-#include "dmxextension.h"
-#include "dmxwindow.h"
-#include "dmxcb.h"
-#include "dmxcursor.h"
-#include "dmxpixmap.h"
-#include "dmxgc.h"
-#include "dmxfont.h"
-#include "dmxcmap.h"
-#ifdef RENDER
-#include "dmxpict.h"
-#endif
-#include "dmxinput.h"
-#include "dmxsync.h"
-#include "dmxscrinit.h"
-#include "input/dmxinputinit.h"
-
-#include "windowstr.h"
-#include "inputstr.h"                 /* For DeviceIntRec */
-#include <X11/extensions/dmxproto.h>  /* For DMX_BAD_* */
-#include "cursorstr.h"
-
-/* The default font is declared in dix/globals.c, but is not included in
- * _any_ header files. */
-extern FontPtr  defaultFont;
-    
-/** This routine provides information to the DMX protocol extension
- * about a particular screen. */
-Bool dmxGetScreenAttributes(int physical, DMXScreenAttributesPtr attr)
-{
-    DMXScreenInfo *dmxScreen;
-
-    if (physical < 0 || physical >= dmxNumScreens) return FALSE;
-
-    dmxScreen = &dmxScreens[physical];
-    attr->displayName         = dmxScreen->name;
-#ifdef PANORAMIX
-    attr->logicalScreen       = noPanoramiXExtension ? dmxScreen->index : 0;
-#else
-    attr->logicalScreen       = dmxScreen->index;
-#endif
-
-    attr->screenWindowWidth   = dmxScreen->scrnWidth;
-    attr->screenWindowHeight  = dmxScreen->scrnHeight;
-    attr->screenWindowXoffset = dmxScreen->scrnX;
-    attr->screenWindowYoffset = dmxScreen->scrnY;
-
-    attr->rootWindowWidth     = dmxScreen->rootWidth;
-    attr->rootWindowHeight    = dmxScreen->rootHeight;
-    attr->rootWindowXoffset   = dmxScreen->rootX;
-    attr->rootWindowYoffset   = dmxScreen->rootY;
-
-    attr->rootWindowXorigin   = dmxScreen->rootXOrigin;
-    attr->rootWindowYorigin   = dmxScreen->rootYOrigin;
-
-    return TRUE;
-}
-
-/** This routine provides information to the DMX protocol extension
- * about a particular window. */
-Bool dmxGetWindowAttributes(WindowPtr pWindow, DMXWindowAttributesPtr attr)
-{
-    dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
-
-    attr->screen         = pWindow->drawable.pScreen->myNum;
-    attr->window         = pWinPriv->window;
-
-    attr->pos.x          = pWindow->drawable.x;
-    attr->pos.y          = pWindow->drawable.y;
-    attr->pos.width      = pWindow->drawable.width;
-    attr->pos.height     = pWindow->drawable.height;
-
-    if (!pWinPriv->window || pWinPriv->offscreen) {
-        attr->vis.x      = 0;
-        attr->vis.y      = 0;
-        attr->vis.height = 0;
-        attr->vis.width  = 0;
-        return pWinPriv->window ? TRUE : FALSE;
-    }
-
-                                /* Compute display-relative coordinates */
-    attr->vis.x          = pWindow->drawable.x;
-    attr->vis.y          = pWindow->drawable.y;
-    attr->vis.width      = pWindow->drawable.width;
-    attr->vis.height     = pWindow->drawable.height;
-
-    if (attr->pos.x < 0) {
-        attr->vis.x     -= attr->pos.x;
-        attr->vis.width  = attr->pos.x + attr->pos.width - attr->vis.x;
-    }
-    if (attr->pos.x + attr->pos.width > pWindow->drawable.pScreen->width) {
-        if (attr->pos.x < 0)
-            attr->vis.width  = pWindow->drawable.pScreen->width;
-        else
-            attr->vis.width  = pWindow->drawable.pScreen->width - attr->pos.x;
-    }
-    if (attr->pos.y < 0) {
-        attr->vis.y     -= attr->pos.y;
-        attr->vis.height = attr->pos.y + attr->pos.height - attr->vis.y;
-    }
-    if (attr->pos.y + attr->pos.height > pWindow->drawable.pScreen->height) {
-        if (attr->pos.y < 0)
-            attr->vis.height = pWindow->drawable.pScreen->height;
-        else
-            attr->vis.height = pWindow->drawable.pScreen->height - attr->pos.y;
-    }
-
-                                /* Convert to window-relative coordinates */
-    attr->vis.x -= attr->pos.x;
-    attr->vis.y -= attr->pos.y;
-
-    return TRUE;
-}
-
-void dmxGetDesktopAttributes(DMXDesktopAttributesPtr attr)
-{
-    attr->width  = dmxGlobalWidth;
-    attr->height = dmxGlobalHeight;
-    attr->shiftX = 0;            /* NOTE: The upper left hand corner of */
-    attr->shiftY = 0;            /*       the desktop is always <0,0>. */
-}
-
-/** Return the total number of devices, not just #dmxNumInputs.  The
- * number returned should be the same as that returned by
- * XListInputDevices. */
-int dmxGetInputCount(void)
-{
-    int i, total;
-    
-    for (total = i = 0; i < dmxNumInputs; i++) total += dmxInputs[i].numDevs;
-    return total;
-}
-
-/** Return information about the device with id = \a deviceId.  This
- * information is primarily for the #ProcDMXGetInputAttributes()
- * function, which does not have access to the appropriate data
- * structure. */
-int dmxGetInputAttributes(int deviceId, DMXInputAttributesPtr attr)
-{
-    int          i, j;
-    DMXInputInfo *dmxInput;
-
-    if (deviceId < 0) return -1;
-    for (i = 0; i < dmxNumInputs; i++) {
-        dmxInput = &dmxInputs[i];
-        for (j = 0; j < dmxInput->numDevs; j++) {
-            DMXLocalInputInfoPtr dmxLocal = dmxInput->devs[j];
-            if (deviceId != dmxLocal->pDevice->id) continue;
-            attr->isCore             = !!dmxLocal->isCore;
-            attr->sendsCore          = !!dmxLocal->sendsCore;
-            attr->detached           = !!dmxInput->detached;
-            attr->physicalScreen     = -1;
-            attr->physicalId         = -1;
-            attr->name               = NULL;
-            switch (dmxLocal->extType) {
-            case DMX_LOCAL_TYPE_LOCAL:
-                attr->inputType      = 0;
-                break;
-            case DMX_LOCAL_TYPE_CONSOLE:
-                attr->inputType      = 1;
-                attr->name           = dmxInput->name;
-                attr->physicalId     = dmxLocal->deviceId;
-                break;
-            case DMX_LOCAL_TYPE_BACKEND:
-            case DMX_LOCAL_TYPE_COMMON:
-                attr->inputType      = 2;
-                attr->physicalScreen = dmxInput->scrnIdx;
-                attr->name           = dmxInput->name;
-                attr->physicalId     = dmxLocal->deviceId;
-                break;
-            }
-            return 0;           /* Success */
-        }
-    }
-    return -1;                  /* Failure */
-}
-
-/** Reinitialized the cursor boundaries. */
-static void dmxAdjustCursorBoundaries(void)
-{
-    int           i;
-
-    dmxReInitOrigins();
-    dmxInitOverlap();
-    dmxComputeWidthHeight(DMX_NO_RECOMPUTE_BOUNDING_BOX);
-    dmxConnectionBlockCallback();
-    for (i = 0; i < dmxNumInputs; i++) {
-        DMXInputInfo *dmxInput = &dmxInputs[i];
-	if (!dmxInput->detached) dmxInputReInit(dmxInput);
-    }
-
-    dmxCheckCursor();
-
-    for (i = 0; i < dmxNumInputs; i++) {
-        DMXInputInfo *dmxInput = &dmxInputs[i];
-	if (!dmxInput->detached) dmxInputLateReInit(dmxInput);
-    }
-}
-
-/** Add an input with the specified attributes.  If the input is added,
- * the physical id is returned in \a deviceId. */
-int dmxAddInput(DMXInputAttributesPtr attr, int *id)
-{
-    int retcode = BadValue;
-
-    if (attr->inputType == 1)   /* console */
-        retcode = dmxInputAttachConsole(attr->name, attr->sendsCore, id);
-    else if (attr->inputType == 2)   /* backend */
-        retcode = dmxInputAttachBackend(attr->physicalScreen,
-                                        attr->sendsCore,id);
-
-    if (retcode == Success) {
-        /* Adjust the cursor boundaries */
-        dmxAdjustCursorBoundaries();
-
-        /* Force completion of the changes */
-        dmxSync(NULL, TRUE);
-    }
-
-    return retcode;
-}
-
-/** Remove the input with physical id \a id. */
-int dmxRemoveInput(int id)
-{
-    return dmxInputDetachId(id);
-}
-
-/** Return the value of #dmxNumScreens -- the total number of backend
- * screens in use (these are logical screens and may be larger than the
- * number of backend displays). */
-unsigned long dmxGetNumScreens(void)
-{
-    return dmxNumScreens;
-}
-
-/** Make sure that #dmxCreateAndRealizeWindow has been called for \a
- * pWindow. */
-void dmxForceWindowCreation(WindowPtr pWindow)
-{
-    dmxWinPrivPtr pWinPriv = DMX_GET_WINDOW_PRIV(pWindow);
-    if (!pWinPriv->window) dmxCreateAndRealizeWindow(pWindow, TRUE);
-}
-
-/** Flush pending syncs for all screens. */
-void dmxFlushPendingSyncs(void)
-{
-    dmxSync(NULL, TRUE);
-}
-
-/** Update DMX's screen resources to match those of the newly moved
- *  and/or resized "root" window. */
-void dmxUpdateScreenResources(ScreenPtr pScreen, int x, int y, int w, int h)
-{
-    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
-    WindowPtr      pRoot     = WindowTable[pScreen->myNum];
-    WindowPtr      pChild;
-    Bool           anyMarked = FALSE;
-
-    /* Handle special case where width and/or height are zero */
-    if (w == 0 || h == 0) {
-	w = 1;
-	h = 1;
-    }
-
-    /* Change screen size */
-    pScreen->width  = w;
-    pScreen->height = h;
-
-    /* Reset the root window's drawable's size */
-    pRoot->drawable.width  = w;
-    pRoot->drawable.height = h;
-
-    /* Set the root window's new winSize and borderSize */
-    pRoot->winSize.extents.x1 = 0;
-    pRoot->winSize.extents.y1 = 0;
-    pRoot->winSize.extents.x2 = w;
-    pRoot->winSize.extents.y2 = h;
-
-    pRoot->borderSize.extents.x1 = 0;
-    pRoot->borderSize.extents.y1 = 0;
-    pRoot->borderSize.extents.x2 = w;
-    pRoot->borderSize.extents.y2 = h;
-
-    /* Recompute this screen's mmWidth & mmHeight */
-    pScreen->mmWidth =
-	(w * 254 + dmxScreen->beXDPI * 5) / (dmxScreen->beXDPI * 10);
-    pScreen->mmHeight =
-	(h * 254 + dmxScreen->beYDPI * 5) / (dmxScreen->beYDPI * 10);
-
-    /* Recompute this screen's window's clip rects as follows: */
-    /*   1. Mark all of root's children's windows */
-    for (pChild = pRoot->firstChild; pChild; pChild = pChild->nextSib)
-	anyMarked |= pScreen->MarkOverlappedWindows(pChild, pChild,
-						    (WindowPtr *)NULL);
-
-    /*   2. Set the root window's borderClip */
-    pRoot->borderClip.extents.x1 = 0;
-    pRoot->borderClip.extents.y1 = 0;
-    pRoot->borderClip.extents.x2 = w;
-    pRoot->borderClip.extents.y2 = h;
-
-    /*   3. Set the root window's clipList */
-    if (anyMarked) {
-	/* If any windows have been marked, set the root window's
-	 * clipList to be broken since it will be recalculated in
-	 * ValidateTree()
-	 */
-	REGION_BREAK(pScreen, &pRoot->clipList);
-    } else {
-	/* Otherwise, we just set it directly since there are no
-	 * windows visible on this screen
-	 */
-	pRoot->clipList.extents.x1 = 0;
-	pRoot->clipList.extents.y1 = 0;
-	pRoot->clipList.extents.x2 = w;
-	pRoot->clipList.extents.y2 = h;
-    }
-
-    /*   4. Revalidate all clip rects and generate expose events */
-    if (anyMarked) {
-	pScreen->ValidateTree(pRoot, NULL, VTBroken);
-	pScreen->HandleExposures(pRoot);
-	if (pScreen->PostValidateTree)
-	    pScreen->PostValidateTree(pRoot, NULL, VTBroken);
-    }
-}
-
-#ifdef PANORAMIX
-#include "panoramiXsrv.h"
-
-/* Defined in dix/events.c */
-extern void ReinitializeRootWindow(WindowPtr win, int xoff, int yoff);
-
-/** Change the "screen" window attributes by resizing the actual window
- *  on the back-end display (if necessary). */
-static void dmxConfigureScreenWindow(int idx,
-				     int x, int y, int w, int h)
-{
-    DMXScreenInfo *dmxScreen = &dmxScreens[idx];
-    ScreenPtr      pScreen   = screenInfo.screens[idx];
-
-    /* Resize "screen" window */
-    if (dmxScreen->scrnX      != x ||
-	dmxScreen->scrnY      != y ||
-	dmxScreen->scrnWidth  != w ||
-	dmxScreen->scrnHeight != h) {
-	dmxResizeScreenWindow(pScreen, x, y, w, h);
-    }
-
-    /* Change "screen" window values */
-    dmxScreen->scrnX      = x;
-    dmxScreen->scrnY      = y;
-    dmxScreen->scrnWidth  = w;
-    dmxScreen->scrnHeight = h;
-}
-				     
-/** Change the "root" window position and size by resizing the actual
- *  window on the back-end display (if necessary) and updating all of
- *  DMX's resources by calling #dmxUpdateScreenResources. */
-static void dmxConfigureRootWindow(int idx, int x, int y, int w, int h)
-{
-    DMXScreenInfo *dmxScreen = &dmxScreens[idx];
-    WindowPtr      pRoot     = WindowTable[idx];
-
-    /* NOTE: Either this function or the ones that it calls must handle
-     * the case where w == 0 || h == 0.  Currently, the functions that
-     * this one calls handle that case. */
-
-    /* 1. Resize "root" window */
-    if (dmxScreen->rootX      != x ||
-	dmxScreen->rootY      != y ||
-	dmxScreen->rootWidth  != w ||
-	dmxScreen->rootHeight != h) {
-	dmxResizeRootWindow(pRoot, x, y, w, h);
-    }
-
-    /* 2. Update all of the screen's resources associated with this root
-     *    window */
-    if (dmxScreen->rootWidth  != w ||
-	dmxScreen->rootHeight != h) {
-	dmxUpdateScreenResources(screenInfo.screens[idx], x, y, w, h);
-    }
-
-    /* Change "root" window values */
-    dmxScreen->rootX      = x;
-    dmxScreen->rootY      = y;
-    dmxScreen->rootWidth  = w;
-    dmxScreen->rootHeight = h;
-}
-
-/** Change the "root" window's origin by updating DMX's internal data
- *  structures (dix and Xinerama) to use the new origin and adjust the
- *  positions of windows that overlap this "root" window. */
-static void dmxSetRootWindowOrigin(int idx, int x, int y)
-{
-    DMXScreenInfo *dmxScreen = &dmxScreens[idx];
-    ScreenPtr      pScreen   = screenInfo.screens[idx];
-    WindowPtr      pRoot     = WindowTable[idx];
-    WindowPtr      pChild;
-    int            xoff;
-    int            yoff;
-
-    /* Change "root" window's origin */
-    dmxScreen->rootXOrigin = x;
-    dmxScreen->rootYOrigin = y;
-
-    /* Compute offsets here in case <x,y> has been changed above */
-    xoff = x - dixScreenOrigins[idx].x;
-    yoff = y - dixScreenOrigins[idx].y;
-
-    /* Adjust the root window's position in dixScreenOrigins */
-    dixScreenOrigins[idx].x = dmxScreen->rootXOrigin;
-    dixScreenOrigins[idx].y = dmxScreen->rootYOrigin;
-
-    /* Recalculate the Xinerama regions and data structs */
-    XineramaReinitData(pScreen);
-
-    /* Adjust each of the root window's children */
-    if (!idx) ReinitializeRootWindow(WindowTable[0], xoff, yoff);
-    pChild = pRoot->firstChild;
-    while (pChild) {
-	/* Adjust child window's position */
-	pScreen->MoveWindow(pChild,
-			    pChild->origin.x - wBorderWidth(pChild) - xoff,
-			    pChild->origin.y - wBorderWidth(pChild) - yoff,
-			    pChild->nextSib,
-			    VTMove);
-
-	/* Note that the call to MoveWindow will eventually call
-	 * dmxPositionWindow which will automatically create a
-	 * window if it is now exposed on screen (for lazy window
-	 * creation optimization) and it will properly set the
-	 * offscreen flag.
-	 */
-
-	pChild = pChild->nextSib;
-    }
-}
-
-/** Configure the attributes of each "screen" and "root" window. */
-int dmxConfigureScreenWindows(int nscreens,
-			      CARD32 *screens,
-			      DMXScreenAttributesPtr attribs,
-			      int *errorScreen)
-{
-    int           i;
-
-    for (i = 0; i < nscreens; i++) {
-	DMXScreenAttributesPtr  attr      = &attribs[i];
-	int                     idx       = screens[i];
-	DMXScreenInfo          *dmxScreen = &dmxScreens[idx];
-
-	if (errorScreen) *errorScreen = i;
-
-	if (!dmxScreen->beDisplay) return DMX_BAD_VALUE;
-
-	/* Check for illegal values */
-	if (idx < 0 || idx >= dmxNumScreens) return BadValue;
-
-	/* The "screen" and "root" windows must have valid sizes */
-	if (attr->screenWindowWidth <= 0 || attr->screenWindowHeight <= 0 ||
-	    attr->rootWindowWidth   <  0 || attr->rootWindowHeight   <  0)
-	    return DMX_BAD_VALUE;
-
-	/* The "screen" window must fit entirely within the BE display */
-	if (attr->screenWindowXoffset < 0 ||
-	    attr->screenWindowYoffset < 0 ||
-	    attr->screenWindowXoffset
-	    + attr->screenWindowWidth  > (unsigned)dmxScreen->beWidth ||
-	    attr->screenWindowYoffset
-	    + attr->screenWindowHeight > (unsigned)dmxScreen->beHeight)
-	    return DMX_BAD_VALUE;
-
-	/* The "root" window must fit entirely within the "screen" window */
-	if (attr->rootWindowXoffset < 0 ||
-	    attr->rootWindowYoffset < 0 ||
-	    attr->rootWindowXoffset
-	    + attr->rootWindowWidth  > attr->screenWindowWidth ||
-	    attr->rootWindowYoffset
-	    + attr->rootWindowHeight > attr->screenWindowHeight)
-	    return DMX_BAD_VALUE;
-
-	/* The "root" window must not expose unaddressable coordinates */
-	if (attr->rootWindowXorigin < 0 ||
-	    attr->rootWindowYorigin < 0 ||
-	    attr->rootWindowXorigin + attr->rootWindowWidth  > 32767 ||
-	    attr->rootWindowYorigin + attr->rootWindowHeight > 32767)
-	    return DMX_BAD_VALUE;
-
-	/* The "root" window must fit within the global bounding box */
-	if (attr->rootWindowXorigin
-	    + attr->rootWindowWidth > (unsigned)dmxGlobalWidth ||
-	    attr->rootWindowYorigin
-	    + attr->rootWindowHeight > (unsigned)dmxGlobalHeight)
-	    return DMX_BAD_VALUE;
-
-	/* FIXME: Handle the rest of the illegal value checking */
-    }
-
-    /* No illegal values found */
-    if (errorScreen) *errorScreen = 0;
-
-    for (i = 0; i < nscreens; i++) {
-	DMXScreenAttributesPtr  attr      = &attribs[i];
-	int                     idx       = screens[i];
-	DMXScreenInfo          *dmxScreen = &dmxScreens[idx];
-
-	dmxLog(dmxInfo, "Changing screen #%d attributes "
-	       "from %dx%d+%d+%d %dx%d+%d+%d +%d+%d "
-	       "to %dx%d+%d+%d %dx%d+%d+%d +%d+%d\n",
-	       idx,
-	       dmxScreen->scrnWidth,      dmxScreen->scrnHeight,
-	       dmxScreen->scrnX,          dmxScreen->scrnY,
-	       dmxScreen->rootWidth,      dmxScreen->rootHeight,
-	       dmxScreen->rootX,          dmxScreen->rootY,
-	       dmxScreen->rootXOrigin,    dmxScreen->rootYOrigin,
-	       attr->screenWindowWidth,   attr->screenWindowHeight,
-	       attr->screenWindowXoffset, attr->screenWindowYoffset,
-	       attr->rootWindowWidth,     attr->rootWindowHeight,
-	       attr->rootWindowXoffset,   attr->rootWindowYoffset,
-	       attr->rootWindowXorigin,   attr->rootWindowYorigin);
-
-	/* Configure "screen" window */
-	dmxConfigureScreenWindow(idx,
-				 attr->screenWindowXoffset,
-				 attr->screenWindowYoffset,
-				 attr->screenWindowWidth,
-				 attr->screenWindowHeight);
-
-	/* Configure "root" window */
-	dmxConfigureRootWindow(idx,
-			       attr->rootWindowXoffset,
-			       attr->rootWindowYoffset,
-			       attr->rootWindowWidth,
-			       attr->rootWindowHeight);
-
-
-	/* Set "root" window's origin */
-	dmxSetRootWindowOrigin(idx,
-			       attr->rootWindowXorigin,
-			       attr->rootWindowYorigin);
-    }
-
-    /* Adjust the cursor boundaries */
-    dmxAdjustCursorBoundaries();
-
-    /* Force completion of the changes */
-    dmxSync(NULL, TRUE);
-
-    return Success;
-}
-
-/** Configure the attributes of the global desktop. */
-int dmxConfigureDesktop(DMXDesktopAttributesPtr attribs)
-{
-    if (attribs->width  <= 0 || attribs->width  >= 32767 ||
-	attribs->height <= 0 || attribs->height >= 32767)
-	return DMX_BAD_VALUE;
-
-    /* If the desktop is shrinking, adjust the "root" windows on each
-     * "screen" window to only show the visible desktop.  Also, handle
-     * the special case where the desktop shrinks such that the it no
-     * longer overlaps an portion of a "screen" window. */
-    if (attribs->width < dmxGlobalWidth || attribs->height < dmxGlobalHeight) {
-	int   i;
-	for (i = 0; i < dmxNumScreens; i++) {
-	    DMXScreenInfo *dmxScreen = &dmxScreens[i];
-	    if (dmxScreen->rootXOrigin
-		+ dmxScreen->rootWidth  > attribs->width ||
-		dmxScreen->rootYOrigin
-		+ dmxScreen->rootHeight > attribs->height) {
-		int  w, h;
-		if ((w = attribs->width  - dmxScreen->rootXOrigin) < 0) w = 0;
-		if ((h = attribs->height - dmxScreen->rootYOrigin) < 0) h = 0;
-		if (w > dmxScreen->scrnWidth)  w = dmxScreen->scrnWidth;
-		if (h > dmxScreen->scrnHeight) h = dmxScreen->scrnHeight;
-		if (w > dmxScreen->rootWidth)  w = dmxScreen->rootWidth;
-		if (h > dmxScreen->rootHeight) h = dmxScreen->rootHeight;
-		dmxConfigureRootWindow(i,
-				       dmxScreen->rootX,
-				       dmxScreen->rootY,
-				       w, h);
-	    }
-	}
-    }
-
-    /* Set the global width/height */
-    dmxSetWidthHeight(attribs->width, attribs->height);
-
-    /* Handle shift[XY] changes */
-    if (attribs->shiftX || attribs->shiftY) {
-	int   i;
-	for (i = 0; i < dmxNumScreens; i++) {
-	    ScreenPtr  pScreen = screenInfo.screens[i];
-	    WindowPtr  pChild  = WindowTable[i]->firstChild;
-	    while (pChild) {
-		/* Adjust child window's position */
-		pScreen->MoveWindow(pChild,
-				    pChild->origin.x - wBorderWidth(pChild)
-				    - attribs->shiftX,
-				    pChild->origin.y - wBorderWidth(pChild)
-				    - attribs->shiftY,
-				    pChild->nextSib,
-				    VTMove);
-
-		/* Note that the call to MoveWindow will eventually call
-		 * dmxPositionWindow which will automatically create a
-		 * window if it is now exposed on screen (for lazy
-		 * window creation optimization) and it will properly
-		 * set the offscreen flag.
-		 */
-
-		pChild = pChild->nextSib;
-	    }
-	}
-    }
-
-    /* Update connection block, Xinerama, etc. -- these appears to
-     * already be handled in dmxConnectionBlockCallback(), which is
-     * called from dmxAdjustCursorBoundaries() [below]. */
-
-    /* Adjust the cursor boundaries */
-    dmxAdjustCursorBoundaries();
-
-    /* Force completion of the changes */
-    dmxSync(NULL, TRUE);
-
-    return Success;
-}
-#endif
-
-/** Create the scratch GCs per depth. */
-static void dmxBECreateScratchGCs(int scrnNum)
-{
-    ScreenPtr  pScreen = screenInfo.screens[scrnNum];
-    GCPtr     *ppGC    = pScreen->GCperDepth;
-    int        i;
-
-    for (i = 0; i <= pScreen->numDepths; i++)
-	dmxBECreateGC(pScreen, ppGC[i]);
-}
-
-#ifdef PANORAMIX
-static Bool FoundPixImage;
-
-/** Search the Xinerama XRT_PIXMAP resources for the pixmap that needs
- *  to have its image restored.  When it is found, see if there is
- *  another screen with the same image.  If so, copy the pixmap image
- *  from the existing screen to the newly created pixmap. */
-static void dmxBERestorePixmapImage(pointer value, XID id, RESTYPE type,
-				    pointer p)
-{
-    if ((type & TypeMask) == (XRT_PIXMAP & TypeMask)) {
-	PixmapPtr      pDst     = (PixmapPtr)p;
-	int            idx      = pDst->drawable.pScreen->myNum;
-	PanoramiXRes  *pXinPix  = (PanoramiXRes *)value;
-	PixmapPtr      pPix;
-	int            i;
-
-	pPix = (PixmapPtr)LookupIDByType(pXinPix->info[idx].id, RT_PIXMAP);
-	if (pPix != pDst) return; /* Not a match.... Next! */
-
-	for (i = 0; i < PanoramiXNumScreens; i++) {
-	    PixmapPtr      pSrc;
-	    dmxPixPrivPtr  pSrcPriv = NULL;
-
-	    if (i == idx) continue; /* Self replication is bad */
-
-	    pSrc =
-		(PixmapPtr)LookupIDByType(pXinPix->info[i].id, RT_PIXMAP);
-	    pSrcPriv = DMX_GET_PIXMAP_PRIV(pSrc);
-	    if (pSrcPriv->pixmap) {
-		DMXScreenInfo *dmxSrcScreen = &dmxScreens[i];
-		DMXScreenInfo *dmxDstScreen = &dmxScreens[idx];
-		dmxPixPrivPtr  pDstPriv = DMX_GET_PIXMAP_PRIV(pDst);
-		XImage        *img;
-		int            j;
-		XlibGC         gc = NULL;
-
-		/* This should never happen, but just in case.... */
-		if (pSrc->drawable.width  != pDst->drawable.width ||
-		    pSrc->drawable.height != pDst->drawable.height)
-		    return;
-
-		/* Copy from src pixmap to dst pixmap */
-		img = XGetImage(dmxSrcScreen->beDisplay,
-				pSrcPriv->pixmap,
-				0, 0,
-				pSrc->drawable.width, pSrc->drawable.height,
-				-1,
-				ZPixmap);
-
-		for (j = 0; j < dmxDstScreen->beNumPixmapFormats; j++) {
-		    if (dmxDstScreen->bePixmapFormats[j].depth == img->depth) {
-			unsigned long  m;
-			XGCValues      v;
-
-			m = GCFunction | GCPlaneMask | GCClipMask;
-			v.function = GXcopy;
-			v.plane_mask = AllPlanes;
-			v.clip_mask = None;
-
-			gc = XCreateGC(dmxDstScreen->beDisplay,
-				       dmxDstScreen->scrnDefDrawables[j],
-				       m, &v);
-			break;
-		    }
-		}
-
-		if (gc) {
-		    XPutImage(dmxDstScreen->beDisplay,
-			      pDstPriv->pixmap,
-			      gc, img, 0, 0, 0, 0,
-			      pDst->drawable.width, pDst->drawable.height);
-		    XFreeGC(dmxDstScreen->beDisplay, gc);
-		    FoundPixImage = True;
-		} else {
-		    dmxLog(dmxWarning, "Could not create GC\n");
-		}
-
-		XDestroyImage(img);
-		return;
-	    }
-	}
-    }
-}
-#endif
-
-/** Restore the pixmap image either from another screen or from an image
- *  that was saved when the screen was previously detached. */
-static void dmxBERestorePixmap(PixmapPtr pPixmap)
-{
-#ifdef PANORAMIX
-    int i;
-
-    /* If Xinerama is not active, there's nothing we can do (see comment
-     * in #else below for more info). */
-    if (noPanoramiXExtension) {
-	dmxLog(dmxWarning, "Cannot restore pixmap image\n");
-	return;
-    }
-
-    FoundPixImage = False;
-    for (i = currentMaxClients; --i >= 0; )
-	if (clients[i])
-	    FindAllClientResources(clients[i], dmxBERestorePixmapImage,
-				   (pointer)pPixmap);
-
-    /* No corresponding pixmap image was found on other screens, so we
-     * need to copy it from the saved image when the screen was detached
-     * (if available). */
-    if (!FoundPixImage) {
-	dmxPixPrivPtr  pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
-
-	if (pPixPriv->detachedImage) {
-	    ScreenPtr      pScreen   = pPixmap->drawable.pScreen;
-	    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
-	    XlibGC         gc        = NULL;
-
-	    for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) {
-		if (dmxScreen->bePixmapFormats[i].depth ==
-		    pPixPriv->detachedImage->depth) {
-		    unsigned long  m;
-		    XGCValues      v;
-
-		    m = GCFunction | GCPlaneMask | GCClipMask;
-		    v.function = GXcopy;
-		    v.plane_mask = AllPlanes;
-		    v.clip_mask = None;
-
-		    gc = XCreateGC(dmxScreen->beDisplay,
-				   dmxScreen->scrnDefDrawables[i],
-				   m, &v);
-		    break;
-		}
-	    }
-
-	    if (gc) {
-		XPutImage(dmxScreen->beDisplay,
-			  pPixPriv->pixmap,
-			  gc,
-			  pPixPriv->detachedImage,
-			  0, 0, 0, 0,
-		      pPixmap->drawable.width, pPixmap->drawable.height);
-		XFreeGC(dmxScreen->beDisplay, gc);
-	    } else {
-		dmxLog(dmxWarning, "Cannot restore pixmap image\n");
-	    }
-
-	    XDestroyImage(pPixPriv->detachedImage);
-	    pPixPriv->detachedImage = NULL;
-	} else {
-	    dmxLog(dmxWarning, "Cannot restore pixmap image\n");
-	}
-    }
-#else
-    /* If Xinerama is not enabled, then there is no other copy of the
-     * pixmap image that we can restore.  Saving all pixmap data is not
-     * a feasible option since there is no mechanism for updating pixmap
-     * data when a screen is detached, which means that the data that
-     * was previously saved would most likely be out of date. */
-    dmxLog(dmxWarning, "Cannot restore pixmap image\n");
-    return;
-#endif
-}
-
-/** Create resources on the back-end server.  This function is called
- *  from #dmxAttachScreen() via the dix layer's FindAllResources
- *  function.  It walks all resources, compares them to the screen
- *  number passed in as \a n and calls the appropriate DMX function to
- *  create the associated resource on the back-end server. */
-static void dmxBECreateResources(pointer value, XID id, RESTYPE type,
-				 pointer n)
-{
-    int        scrnNum = (int)n;
-    ScreenPtr  pScreen = screenInfo.screens[scrnNum];
-
-    if ((type & TypeMask) == (RT_WINDOW & TypeMask)) {
-	/* Window resources are created below in dmxBECreateWindowTree */
-    } else if ((type & TypeMask) == (RT_PIXMAP & TypeMask)) {
-	PixmapPtr  pPix = value;
-	if (pPix->drawable.pScreen->myNum == scrnNum) {
-	    dmxBECreatePixmap(pPix);
-	    dmxBERestorePixmap(pPix);
-	}
-    } else if ((type & TypeMask) == (RT_GC & TypeMask)) {
-	GCPtr  pGC = value;
-	if (pGC->pScreen->myNum == scrnNum) {
-	    /* Create the GC on the back-end server */
-	    dmxBECreateGC(pScreen, pGC);
-	    /* Create any pixmaps associated with this GC */
-	    if (!pGC->tileIsPixel) {
-		dmxBECreatePixmap(pGC->tile.pixmap);
-		dmxBERestorePixmap(pGC->tile.pixmap);
-	    }
-	    if (pGC->stipple != pScreen->PixmapPerDepth[0]) {
-		dmxBECreatePixmap(pGC->stipple);
-		dmxBERestorePixmap(pGC->stipple);
-	    }
-	    if (pGC->font != defaultFont) {
-		(void)dmxBELoadFont(pScreen, pGC->font);
-	    }
-	    /* Update the GC on the back-end server */
-	    dmxChangeGC(pGC, -1L);
-	}
-    } else if ((type & TypeMask) == (RT_FONT & TypeMask)) {
-	(void)dmxBELoadFont(pScreen, (FontPtr)value);
-    } else if ((type & TypeMask) == (RT_CURSOR & TypeMask)) {
-	dmxBECreateCursor(pScreen, (CursorPtr)value);
-    } else if ((type & TypeMask) == (RT_COLORMAP & TypeMask)) {
-	ColormapPtr  pCmap = value;
-	if (pCmap->pScreen->myNum == scrnNum)
-	    (void)dmxBECreateColormap((ColormapPtr)value);
-#if 0
-#ifdef RENDER
-    /* TODO: Recreate Picture and GlyphSet resources */
-    } else if ((type & TypeMask) == (PictureType & TypeMask)) {
-	/* Picture resources are created when windows are created */
-    } else if ((type & TypeMask) == (GlyphSetType & TypeMask)) {
-	dmxBEFreeGlyphSet(pScreen, (GlyphSetPtr)value);
-#endif
-#endif
-    } else {
-	/* Other resource types??? */
-    }
-}
-
-/** Create window hierachy on back-end server.  The window tree is
- *  created in a special order (bottom most subwindow first) so that the
- *  #dmxCreateNonRootWindow() function does not need to recursively call
- *  itself to create each window's parents.  This is required so that we
- *  have the opportunity to create each window's border and background
- *  pixmaps (where appropriate) before the window is created. */
-static void dmxBECreateWindowTree(int idx)
-{
-    DMXScreenInfo *dmxScreen = &dmxScreens[idx];
-    WindowPtr      pRoot     = WindowTable[idx];
-    dmxWinPrivPtr  pWinPriv  = DMX_GET_WINDOW_PRIV(pRoot);
-    WindowPtr      pWin;
-
-    /* Create the pixmaps associated with the root window */
-    if (!pRoot->borderIsPixel) {
-	dmxBECreatePixmap(pRoot->border.pixmap);
-	dmxBERestorePixmap(pRoot->border.pixmap);
-    }
-    if (pRoot->backgroundState == BackgroundPixmap) {
-	dmxBECreatePixmap(pRoot->background.pixmap);
-	dmxBERestorePixmap(pRoot->background.pixmap);
-    }
-
-    /* Create root window first */
-    dmxScreen->rootWin = pWinPriv->window = dmxCreateRootWindow(pRoot);
-    XMapWindow(dmxScreen->beDisplay, dmxScreen->rootWin);
-
-    pWin = pRoot->lastChild;
-    while (pWin) {
-	pWinPriv = DMX_GET_WINDOW_PRIV(pWin);
-
-	/* Create the pixmaps regardless of whether or not the
-	 * window is created or not due to lazy window creation.
-	 */
-	if (!pWin->borderIsPixel) {
-	    dmxBECreatePixmap(pWin->border.pixmap);
-	    dmxBERestorePixmap(pWin->border.pixmap);
-	}
-	if (pWin->backgroundState == BackgroundPixmap) {
-	    dmxBECreatePixmap(pWin->background.pixmap);
-	    dmxBERestorePixmap(pWin->background.pixmap);
-	}
-
-	/* Reset the window attributes */
-	dmxGetDefaultWindowAttributes(pWin,
-				      &pWinPriv->cmap,
-				      &pWinPriv->visual);
-
-	/* Create the window */
-	if (pWinPriv->mapped && !pWinPriv->offscreen)
-	    dmxCreateAndRealizeWindow(pWin, TRUE);
-
-	/* Next, create the bottom-most child */
-	if (pWin->lastChild) {
-	    pWin = pWin->lastChild;
-	    continue;
-	}
-
-	/* If the window has no children, move on to the next higher window */
-	while (!pWin->prevSib && (pWin != pRoot))
-	    pWin = pWin->parent;
-
-	if (pWin->prevSib) {
-	    pWin = pWin->prevSib;
-	    continue;
-	}
-
-	/* When we reach the root window, we are finished */
-	if (pWin == pRoot)
-	    break;
-    }
-}
-
-/* Refresh screen by generating exposure events for all windows */
-static void dmxForceExposures(int idx)
-{
-    ScreenPtr      pScreen   = screenInfo.screens[idx];
-    WindowPtr  pRoot     = WindowTable[idx];
-    Bool       anyMarked = FALSE;
-    WindowPtr  pChild;
-
-    for (pChild = pRoot->firstChild; pChild; pChild = pChild->nextSib)
-	anyMarked |= pScreen->MarkOverlappedWindows(pChild, pChild,
-						    (WindowPtr *)NULL);
-    if (anyMarked) {
-	/* If any windows have been marked, set the root window's
-	 * clipList to be broken since it will be recalculated in
-	 * ValidateTree()
-	 */
-	REGION_BREAK(pScreen, &pRoot->clipList);
-	pScreen->ValidateTree(pRoot, NULL, VTBroken);
-	pScreen->HandleExposures(pRoot);
-	if (pScreen->PostValidateTree)
-	    pScreen->PostValidateTree(pRoot, NULL, VTBroken);
-    }
-}
-
-/** Compare the new and old screens to see if they are compatible. */
-static Bool dmxCompareScreens(DMXScreenInfo *new, DMXScreenInfo *old)
-{
-    int i;
-
-    if (new->beWidth != old->beWidth) return FALSE;
-    if (new->beHeight != old->beHeight) return FALSE;
-    if (new->beDepth != old->beDepth) return FALSE;
-    if (new->beBPP != old->beBPP) return FALSE;
-
-    if (new->beNumDepths != old->beNumDepths) return FALSE;
-    for (i = 0; i < old->beNumDepths; i++)
-	if (new->beDepths[i] != old->beDepths[i]) return FALSE;
-
-    if (new->beNumPixmapFormats != old->beNumPixmapFormats) return FALSE;
-    for (i = 0; i < old->beNumPixmapFormats; i++) {
-	if (new->bePixmapFormats[i].depth !=
-	    old->bePixmapFormats[i].depth) return FALSE;
-	if (new->bePixmapFormats[i].bits_per_pixel !=
-	    old->bePixmapFormats[i].bits_per_pixel) return FALSE;
-	if (new->bePixmapFormats[i].scanline_pad !=
-	    old->bePixmapFormats[i].scanline_pad) return FALSE;
-    }
-
-    if (new->beNumVisuals != old->beNumVisuals) return FALSE;
-    for (i = 0; i < old->beNumVisuals; i++) {
-	if (new->beVisuals[i].visualid !=
-	    old->beVisuals[i].visualid) return FALSE;
-	if (new->beVisuals[i].screen !=
-	    old->beVisuals[i].screen) return FALSE;
-	if (new->beVisuals[i].depth !=
-	    old->beVisuals[i].depth) return FALSE;
-	if (new->beVisuals[i].class !=
-	    old->beVisuals[i].class) return FALSE;
-	if (new->beVisuals[i].red_mask !=
-	    old->beVisuals[i].red_mask) return FALSE;
-	if (new->beVisuals[i].green_mask !=
-	    old->beVisuals[i].green_mask) return FALSE;
-	if (new->beVisuals[i].blue_mask !=
-	    old->beVisuals[i].blue_mask) return FALSE;
-	if (new->beVisuals[i].colormap_size !=
-	    old->beVisuals[i].colormap_size) return FALSE;
-	if (new->beVisuals[i].bits_per_rgb !=
-	    old->beVisuals[i].bits_per_rgb) return FALSE;
-    }
-
-    if (new->beDefVisualIndex != old->beDefVisualIndex) return FALSE;
-
-    return TRUE;
-}
-
-/** Reattach previously detached back-end screen. */
-int dmxAttachScreen(int idx, DMXScreenAttributesPtr attr)
-{
-    ScreenPtr      pScreen   = screenInfo.screens[idx];
-    DMXScreenInfo *dmxScreen = &dmxScreens[idx];
-    CARD32         scrnNum   = idx;
-    DMXScreenInfo  oldDMXScreen;
-    int            i;
-
-    /* Return failure if dynamic addition/removal of screens is disabled */
-    if (!dmxAddRemoveScreens) {
-	dmxLog(dmxWarning,
-	       "Attempting to add a screen, but the AddRemoveScreen\n");
-	dmxLog(dmxWarning,
-	       "extension has not been enabled.  To enable this extension\n");
-	dmxLog(dmxWarning,
-	       "add the \"-addremovescreens\" option either to the command\n");
-	dmxLog(dmxWarning,
-	       "line or in the configuration file.\n");
-	return 1;
-    }
-
-    /* Cannot add a screen that does not exist */
-    if (idx < 0 || idx >= dmxNumScreens) return 1;
-
-    /* Cannot attach to a screen that is already opened */
-    if (dmxScreen->beDisplay) {
-	dmxLog(dmxWarning,
-	       "Attempting to add screen #%d but a screen already exists\n",
-	       idx);
-	return 1;
-    }
-
-    dmxLogOutput(dmxScreen, "Attaching screen #%d\n", idx);
-
-    /* Save old info */
-    oldDMXScreen = *dmxScreen;
-
-    /* Copy the name to the new screen */
-    dmxScreen->name = strdup(attr->displayName);
-
-    /* Open display and get all of the screen info */
-    if (!dmxOpenDisplay(dmxScreen)) {
-	dmxLog(dmxWarning,
-               "dmxOpenDisplay: Unable to open display %s\n",
-               dmxScreen->name);
-
-	/* Restore the old screen */
-	*dmxScreen = oldDMXScreen;
-	return 1;
-    }
-
-    dmxSetErrorHandler(dmxScreen);
-    dmxCheckForWM(dmxScreen);
-    dmxGetScreenAttribs(dmxScreen);
-
-    if (!dmxGetVisualInfo(dmxScreen)) {
-	dmxLog(dmxWarning, "dmxGetVisualInfo: No matching visuals found\n");
-	XFree(dmxScreen->beVisuals);
-	XCloseDisplay(dmxScreen->beDisplay);
-
-	/* Restore the old screen */
-	*dmxScreen = oldDMXScreen;
-	return 1;
-    }
-
-    dmxGetColormaps(dmxScreen);
-    dmxGetPixmapFormats(dmxScreen);
-
-    /* Verify that the screen to be added has the same info as the
-     * previously added screen. */
-    if (!dmxCompareScreens(dmxScreen, &oldDMXScreen)) {
-	dmxLog(dmxWarning,
-	       "New screen data (%s) does not match previously\n",
-	       dmxScreen->name);
-	dmxLog(dmxWarning,
-	       "attached screen data (%s)\n",
-	       oldDMXScreen.name);
-	dmxLog(dmxWarning,
-	       "All data must match in order to attach to screen #%d\n",
-	       idx);
-	XFree(dmxScreen->beVisuals);
-	XFree(dmxScreen->beDepths);
-	XFree(dmxScreen->bePixmapFormats);
-	XCloseDisplay(dmxScreen->beDisplay);
-
-	/* Restore the old screen */
-	*dmxScreen = oldDMXScreen;
-	return 1;
-    }
-
-    /* Initialize the BE screen resources */
-    dmxBEScreenInit(idx, screenInfo.screens[idx]);
-
-    /* TODO: Handle GLX visual initialization.  GLXProxy needs to be
-     * updated to handle dynamic addition/removal of screens. */
-
-    /* Create default stipple */
-    dmxBECreatePixmap(pScreen->PixmapPerDepth[0]);
-    dmxBERestorePixmap(pScreen->PixmapPerDepth[0]);
-
-    /* Create the scratch GCs */
-    dmxBECreateScratchGCs(idx);
-
-    /* Create the default font */
-    (void)dmxBELoadFont(pScreen, defaultFont);
-
-    /* Create all resources that don't depend on windows */
-    for (i = currentMaxClients; --i >= 0; )
-	if (clients[i])
-	    FindAllClientResources(clients[i], dmxBECreateResources,
-				   (pointer)idx);
-
-    /* Create window hierarchy (top down) */
-    dmxBECreateWindowTree(idx);
-
-    /* Refresh screen by generating exposure events for all windows */
-    dmxForceExposures(idx);
-
-    dmxSync(&dmxScreens[idx], TRUE);
-
-    /* We used these to compare the old and new screens.  They are no
-     * longer needed since we have a newly attached screen, so we can
-     * now free the old screen's resources. */
-    XFree(oldDMXScreen.beVisuals);
-    XFree(oldDMXScreen.beDepths);
-    XFree(oldDMXScreen.bePixmapFormats);
-    /* TODO: should oldDMXScreen.name be freed?? */
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension)
-	return dmxConfigureScreenWindows(1, &scrnNum, attr, NULL);
-    else
-#endif
-	return 0; /* Success */
-}
-
-/*
- * Resources that may have state on the BE server and need to be freed:
- *
- * RT_NONE
- * RT_WINDOW
- * RT_PIXMAP
- * RT_GC
- * RT_FONT
- * RT_CURSOR
- * RT_COLORMAP
- * RT_CMAPENTRY
- * RT_OTHERCLIENT
- * RT_PASSIVEGRAB
- * XRT_WINDOW
- * XRT_PIXMAP
- * XRT_GC
- * XRT_COLORMAP
- * XRT_PICTURE
- * PictureType
- * PictFormatType
- * GlyphSetType
- * ClientType
- * EventType
- * RT_INPUTCLIENT
- * XETrapType
- * RTCounter
- * RTAwait
- * RTAlarmClient
- * RT_XKBCLIENT
- * RTContext
- * TagResType
- * StalledResType
- * RT_APPGROUP
- * SecurityAuthorizationResType
- * RTEventClient
- * __glXContextRes
- * __glXClientRes
- * __glXPixmapRes
- * __glXWindowRes
- * __glXPbufferRes
- */
-
-#ifdef PANORAMIX
-/** Search the Xinerama XRT_PIXMAP resources for the pixmap that needs
- *  to have its image saved. */
-static void dmxBEFindPixmapImage(pointer value, XID id, RESTYPE type,
-				 pointer p)
-{
-    if ((type & TypeMask) == (XRT_PIXMAP & TypeMask)) {
-	PixmapPtr      pDst     = (PixmapPtr)p;
-	int            idx      = pDst->drawable.pScreen->myNum;
-	PanoramiXRes  *pXinPix  = (PanoramiXRes *)value;
-	PixmapPtr      pPix;
-	int            i;
-
-	pPix = (PixmapPtr)LookupIDByType(pXinPix->info[idx].id, RT_PIXMAP);
-	if (pPix != pDst) return; /* Not a match.... Next! */
-
-	for (i = 0; i < PanoramiXNumScreens; i++) {
-	    PixmapPtr      pSrc;
-	    dmxPixPrivPtr  pSrcPriv = NULL;
-
-	    if (i == idx) continue; /* Self replication is bad */
-
-	    pSrc =
-		(PixmapPtr)LookupIDByType(pXinPix->info[i].id, RT_PIXMAP);
-	    pSrcPriv = DMX_GET_PIXMAP_PRIV(pSrc);
-	    if (pSrcPriv->pixmap) {
-		FoundPixImage = True;
-		return;
-	    }
-	}
-    }
-}
-#endif
-
-/** Save the pixmap image only when there is not another screen with
- *  that pixmap from which the image can be read when the screen is
- *  reattached.  To do this, we first try to find a pixmap on another
- *  screen corresponding to the one we are trying to save.  If we find
- *  one, then we do not need to save the image data since during
- *  reattachment, the image data can be read from that other pixmap.
- *  However, if we do not find one, then we need to save the image data.
- *  The common case for these are for the default stipple and root
- *  tile. */
-static void dmxBESavePixmap(PixmapPtr pPixmap)
-{
-#ifdef PANORAMIX
-    int i;
-
-    /* If Xinerama is not active, there's nothing we can do (see comment
-     * in #else below for more info). */
-    if (noPanoramiXExtension) return;
-
-    FoundPixImage = False;
-    for (i = currentMaxClients; --i >= 0; )
-	if (clients[i])
-	    FindAllClientResources(clients[i], dmxBEFindPixmapImage,
-				   (pointer)pPixmap);
-
-    /* Save the image only if there is no other screens that have a
-     * pixmap that corresponds to the one we are trying to save. */
-    if (!FoundPixImage) {
-	dmxPixPrivPtr  pPixPriv = DMX_GET_PIXMAP_PRIV(pPixmap);
-
-	if (!pPixPriv->detachedImage) {
-	    ScreenPtr      pScreen   = pPixmap->drawable.pScreen;
-	    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
-
-	    pPixPriv->detachedImage = XGetImage(dmxScreen->beDisplay,
-						pPixPriv->pixmap,
-						0, 0,
-						pPixmap->drawable.width,
-						pPixmap->drawable.height,
-						-1,
-						ZPixmap);
-	    if (!pPixPriv->detachedImage)
-		dmxLog(dmxWarning, "Cannot save pixmap image\n");
-	}
-    }
-#else
-    /* NOTE: The only time there is a pixmap on another screen that
-     * corresponds to the one we are trying to save is when Xinerama is
-     * active.  Otherwise, the pixmap image data is only stored on a
-     * single screen, which means that once it is detached, that data is
-     * lost.  We could save the data here, but then that would require
-     * us to implement the ability for Xdmx to keep the pixmap up to
-     * date while the screen is detached, which is beyond the scope of
-     * the current project. */
-    return;
-#endif
-}
-
-/** Destroy resources on the back-end server.  This function is called
- *  from #dmxDetachScreen() via the dix layer's FindAllResources
- *  function.  It walks all resources, compares them to the screen
- *  number passed in as \a n and calls the appropriate DMX function to
- *  free the associated resource on the back-end server. */
-static void dmxBEDestroyResources(pointer value, XID id, RESTYPE type,
-				  pointer n)
-{
-    int        scrnNum = (int)n;
-    ScreenPtr  pScreen = screenInfo.screens[scrnNum];
-
-    if ((type & TypeMask) == (RT_WINDOW & TypeMask)) {
-	/* Window resources are destroyed below in dmxBEDestroyWindowTree */
-    } else if ((type & TypeMask) == (RT_PIXMAP & TypeMask)) {
-	PixmapPtr  pPix = value;
-	if (pPix->drawable.pScreen->myNum == scrnNum) {
-	    dmxBESavePixmap(pPix);
-	    dmxBEFreePixmap(pPix);
-	}
-    } else if ((type & TypeMask) == (RT_GC & TypeMask)) {
-	GCPtr  pGC = value;
-	if (pGC->pScreen->myNum == scrnNum)
-	    dmxBEFreeGC(pGC);
-    } else if ((type & TypeMask) == (RT_FONT & TypeMask)) {
-	dmxBEFreeFont(pScreen, (FontPtr)value);
-    } else if ((type & TypeMask) == (RT_CURSOR & TypeMask)) {
-	dmxBEFreeCursor(pScreen, (CursorPtr)value);
-    } else if ((type & TypeMask) == (RT_COLORMAP & TypeMask)) {
-	ColormapPtr  pCmap = value;
-	if (pCmap->pScreen->myNum == scrnNum)
-	    dmxBEFreeColormap((ColormapPtr)value);
-#ifdef RENDER
-    } else if ((type & TypeMask) == (PictureType & TypeMask)) {
-	PicturePtr  pPict = value;
-	if (pPict->pDrawable->pScreen->myNum == scrnNum)
-	    dmxBEFreePicture((PicturePtr)value);
-    } else if ((type & TypeMask) == (GlyphSetType & TypeMask)) {
-	dmxBEFreeGlyphSet(pScreen, (GlyphSetPtr)value);
-#endif
-    } else {
-	/* Other resource types??? */
-    }
-}
-
-/** Destroy the scratch GCs that are created per depth. */
-static void dmxBEDestroyScratchGCs(int scrnNum)
-{
-    ScreenPtr  pScreen = screenInfo.screens[scrnNum];
-    GCPtr     *ppGC    = pScreen->GCperDepth;
-    int        i;
-
-    for (i = 0; i <= pScreen->numDepths; i++)
-	dmxBEFreeGC(ppGC[i]);
-}
-
-/** Destroy window hierachy on back-end server.  To ensure that all
- *  XDestroyWindow() calls succeed, they must be performed in a bottom
- *  up order so that windows are not destroyed before their children.
- *  XDestroyWindow(), which is called from #dmxBEDestrowWindow(), will
- *  destroy a window as well as all of it's children. */
-static void dmxBEDestroyWindowTree(int idx)
-{
-    WindowPtr  pWin   = WindowTable[idx];
-    WindowPtr  pChild = pWin;
-
-    while (1) {
-	if (pChild->firstChild) {
-	    pChild = pChild->firstChild;
-	    continue;
-	}
-
-	/* Destroy the window */
-	dmxBEDestroyWindow(pChild);
-
-	/* Make sure we destroy the window's border and background
-	 * pixmaps if they exist */
-	if (!pChild->borderIsPixel) {
-	    dmxBESavePixmap(pChild->border.pixmap);
-	    dmxBEFreePixmap(pChild->border.pixmap);
-	}
-	if (pChild->backgroundState == BackgroundPixmap) {
-	    dmxBESavePixmap(pChild->background.pixmap);
-	    dmxBEFreePixmap(pChild->background.pixmap);
-	}
-
-	while (!pChild->nextSib && (pChild != pWin)) {
-	    pChild = pChild->parent;
-	    dmxBEDestroyWindow(pChild);
-	    if (!pChild->borderIsPixel) {
-		dmxBESavePixmap(pChild->border.pixmap);
-		dmxBEFreePixmap(pChild->border.pixmap);
-	    }
-	    if (pChild->backgroundState == BackgroundPixmap) {
-		dmxBESavePixmap(pChild->background.pixmap);
-		dmxBEFreePixmap(pChild->background.pixmap);
-	    }
-	}
-
-	if (pChild == pWin)
-	    break;
-
-	pChild = pChild->nextSib;
-    }
-}
-
-/** Detach back-end screen. */
-int dmxDetachScreen(int idx)
-{
-    DMXScreenInfo *dmxScreen = &dmxScreens[idx];
-    int            i;
-
-    /* Return failure if dynamic addition/removal of screens is disabled */
-    if (!dmxAddRemoveScreens) {
-	dmxLog(dmxWarning,
-	       "Attempting to remove a screen, but the AddRemoveScreen\n");
-	dmxLog(dmxWarning,
-	       "extension has not been enabled.  To enable this extension\n");
-	dmxLog(dmxWarning,
-	       "add the \"-addremovescreens\" option either to the command\n");
-	dmxLog(dmxWarning,
-	       "line or in the configuration file.\n");
-	return 1;
-    }
-
-    /* Cannot remove a screen that does not exist */
-    if (idx < 0 || idx >= dmxNumScreens) return 1;
-
-    /* Cannot detach from a screen that is not opened */
-    if (!dmxScreen->beDisplay) {
-	dmxLog(dmxWarning,
-	       "Attempting to remove screen #%d but it has not been opened\n",
-	       idx);
-	return 1;
-    }
-
-    dmxLogOutput(dmxScreen, "Detaching screen #%d\n", idx);
-
-    /* Detach input */
-    dmxInputDetachAll(dmxScreen);
-
-    /* Save all relevant state (TODO) */
-
-    /* Free all non-window resources related to this screen */
-    for (i = currentMaxClients; --i >= 0; )
-	if (clients[i])
-	    FindAllClientResources(clients[i], dmxBEDestroyResources,
-				   (pointer)idx);
-
-    /* Free scratch GCs */
-    dmxBEDestroyScratchGCs(idx);
-
-    /* Free window resources related to this screen */
-    dmxBEDestroyWindowTree(idx);
-
-    /* Free default stipple */
-    dmxBESavePixmap(screenInfo.screens[idx]->PixmapPerDepth[0]);
-    dmxBEFreePixmap(screenInfo.screens[idx]->PixmapPerDepth[0]);
-
-    /* Free the remaining screen resources and close the screen */
-    dmxBECloseScreen(screenInfo.screens[idx]);
-
-    /* Adjust the cursor boundaries (paints detached console window) */
-    dmxAdjustCursorBoundaries();
-
-    return 0; /* Success */
-}