window.c

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	    {	
		pPixmap = (PixmapPtr)SecurityLookupIDByType(client, pixID,
						RT_PIXMAP, SecurityReadAccess);
		if (pPixmap != (PixmapPtr) NULL)
		{
		    if	((pPixmap->drawable.depth != pWin->drawable.depth) ||
			 (pPixmap->drawable.pScreen != pScreen))
		    {
			error = BadMatch;
			goto PatchUp;
		    }
		    if (pWin->backgroundState == BackgroundPixmap)
			(*pScreen->DestroyPixmap)(pWin->background.pixmap);
		    pWin->backgroundState = BackgroundPixmap;
		    pWin->background.pixmap = pPixmap;
		    pPixmap->refcnt++;
		}
		else
		{
		    error = BadPixmap;
		    client->errorValue = pixID;
		    goto PatchUp;
		}
	    }
	    break;
	  case CWBackPixel:
	    if (pWin->backgroundState == ParentRelative)
		borderRelative = TRUE;
	    if (pWin->backgroundState == BackgroundPixmap)
		(*pScreen->DestroyPixmap)(pWin->background.pixmap);
	    pWin->backgroundState = BackgroundPixel;
	    pWin->background.pixel = (CARD32 ) *pVlist;
		   /* background pixel overrides background pixmap,
		      so don't let the ddx layer see both bits */
	    vmaskCopy &= ~CWBackPixmap;
	    pVlist++;
	    break;
	  case CWBorderPixmap:
	    pixID = (Pixmap ) *pVlist;
	    pVlist++;
	    if (pixID == CopyFromParent)
	    {
		if (!pWin->parent ||
		    (pWin->drawable.depth != pWin->parent->drawable.depth))
		{
		    error = BadMatch;
		    goto PatchUp;
		}
		if (pWin->borderIsPixel == FALSE)
		    (*pScreen->DestroyPixmap)(pWin->border.pixmap);
		pWin->border = pWin->parent->border;
		if ((pWin->borderIsPixel = pWin->parent->borderIsPixel) == TRUE)
		{
		    index2 = CWBorderPixel;
		}
		else
		{
		    pWin->parent->border.pixmap->refcnt++;
		}
	    }
	    else
	    {	
		pPixmap = (PixmapPtr)SecurityLookupIDByType(client, pixID,
					RT_PIXMAP, SecurityReadAccess);
		if (pPixmap)
		{
		    if	((pPixmap->drawable.depth != pWin->drawable.depth) ||
			 (pPixmap->drawable.pScreen != pScreen))
		    {
			error = BadMatch;
			goto PatchUp;
		    }
		    if (pWin->borderIsPixel == FALSE)
			(*pScreen->DestroyPixmap)(pWin->border.pixmap);
		    pWin->borderIsPixel = FALSE;
		    pWin->border.pixmap = pPixmap;
		    pPixmap->refcnt++;
		}
		else
		{
		    error = BadPixmap;
		    client->errorValue = pixID;
		    goto PatchUp;
		}
	    }
	    break;
	  case CWBorderPixel:
	    if (pWin->borderIsPixel == FALSE)
		(*pScreen->DestroyPixmap)(pWin->border.pixmap);
	    pWin->borderIsPixel = TRUE;
	    pWin->border.pixel = (CARD32) *pVlist;
		    /* border pixel overrides border pixmap,
		       so don't let the ddx layer see both bits */
	    vmaskCopy &= ~CWBorderPixmap;
	    pVlist++;
	    break;
	  case CWBitGravity:
	    val = (CARD8 )*pVlist;
	    pVlist++;
	    if (val > StaticGravity)
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->bitGravity = val;
	    break;
	  case CWWinGravity:
	    val = (CARD8 )*pVlist;
	    pVlist++;
	    if (val > StaticGravity)
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->winGravity = val;
	    break;
	  case CWBackingStore:
	    val = (CARD8 )*pVlist;
	    pVlist++;
	    if ((val != NotUseful) && (val != WhenMapped) && (val != Always))
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->backingStore = val;
	    pWin->forcedBS = FALSE;
	    break;
	  case CWBackingPlanes:
	    if (pWin->optional || ((CARD32)*pVlist != (CARD32)~0L)) {
		if (!pWin->optional && !MakeWindowOptional (pWin))
		{
		    error = BadAlloc;
		    goto PatchUp;
		}
		pWin->optional->backingBitPlanes = (CARD32) *pVlist;
		if ((CARD32)*pVlist == (CARD32)~0L)
		    checkOptional = TRUE;
	    }
	    pVlist++;
	    break;
	  case CWBackingPixel:
	    if (pWin->optional || (CARD32) *pVlist) {
		if (!pWin->optional && !MakeWindowOptional (pWin))
		{
		    error = BadAlloc;
		    goto PatchUp;
		}
		pWin->optional->backingPixel = (CARD32) *pVlist;
		if (!*pVlist)
		    checkOptional = TRUE;
	    }
	    pVlist++;
	    break;
	  case CWSaveUnder:
	    val = (BOOL) *pVlist;
	    pVlist++;
	    if ((val != xTrue) && (val != xFalse))
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
#ifdef DO_SAVE_UNDERS
	    if (pWin->parent && (pWin->saveUnder != val) && (pWin->viewable) &&
		DO_SAVE_UNDERS(pWin))
	    {
		/*
		 * Re-check all siblings and inferiors for obscurity or
		 * exposition (hee hee).
		 */
		if (pWin->saveUnder)
		    deltaSaveUndersViewable--;
		else
		    deltaSaveUndersViewable++;
		pWin->saveUnder = val;

		if (pWin->firstChild)
		{
                    pLayerWin = (*pScreen->GetLayerWindow)(pWin);
                   if ((*pScreen->ChangeSaveUnder)(pLayerWin->parent, pWin->nextSib))
                       (*pScreen->PostChangeSaveUnder)(pLayerWin->parent,
                                                       pWin->nextSib);
               }
               else
               {
                   if ((*pScreen->ChangeSaveUnder)(pWin, pWin->nextSib))
                       (*pScreen->PostChangeSaveUnder)(pWin,
                                                       pWin->nextSib);
               }                                   
	    }
	    else
	    {
		/*  If we're changing the saveUnder attribute of the root 
		 *  window, all we do is set pWin->saveUnder so that
		 *  GetWindowAttributes returns the right value.  We don't
		 *  do the "normal" save-under processing (as above).
		 *  Hope that doesn't cause any problems.
		 */
		pWin->saveUnder = val;
	    }
#else
	    pWin->saveUnder = val;
#endif /* DO_SAVE_UNDERS */
	    break;
	  case CWEventMask:
	    result = EventSelectForWindow(pWin, client, (Mask )*pVlist);
	    if (result)
	    {
		error = result;
		goto PatchUp;
	    }
	    pVlist++;
	    break;
	  case CWDontPropagate:
	    result = EventSuppressForWindow(pWin, client, (Mask )*pVlist,
					    &checkOptional);
	    if (result)
	    {
		error = result;
		goto PatchUp;
	    }
	    pVlist++;
	    break;
	  case CWOverrideRedirect:
	    val = (BOOL ) *pVlist;
	    pVlist++;
	    if ((val != xTrue) && (val != xFalse))
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->overrideRedirect = val;
	    break;
	  case CWColormap:
	    cmap = (Colormap) *pVlist;
	    pVlist++;
	    if (cmap == CopyFromParent)
	    {
#ifdef XAPPGROUP
		Colormap ag_colormap;
		ClientPtr win_owner;

		/*
		 * win_owner == client for CreateWindow, other clients
		 * can ChangeWindowAttributes
		 */
		win_owner = LookupClient (pWin->drawable.id, client);

		if ( win_owner && win_owner->appgroup &&
		    !pWin->parent->parent &&
		    (ag_colormap = XagDefaultColormap (win_owner)))
		    cmap = ag_colormap;
		else
#endif
		if (pWin->parent &&
		    (!pWin->optional ||
		     pWin->optional->visual == wVisual (pWin->parent)))
		{
		    cmap = wColormap (pWin->parent);
		}
		else
		    cmap = None;
	    }
	    if (cmap == None)
	    {
		error = BadMatch;
		goto PatchUp;
	    }
	    pCmap = (ColormapPtr)SecurityLookupIDByType(client, cmap,
					      RT_COLORMAP, SecurityReadAccess);
	    if (!pCmap)
	    {
		error = BadColor;
		client->errorValue = cmap;
		goto PatchUp;
	    }
	    if (pCmap->pVisual->vid != wVisual (pWin) ||
		pCmap->pScreen != pScreen)
	    {
		error = BadMatch;
		goto PatchUp;
	    }
	    if (cmap != wColormap (pWin))
	    {
		if (!pWin->optional)
		{
		    if (!MakeWindowOptional (pWin))
		    {
			error = BadAlloc;
			goto PatchUp;
		    }
		}
		else if (pWin->parent && cmap == wColormap (pWin->parent))
		    checkOptional = TRUE;

		/*
		 * propagate the original colormap to any children
		 * inheriting it
		 */

		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
		{
		    if (!pChild->optional && !MakeWindowOptional (pChild))
		    {
			error = BadAlloc;
			goto PatchUp;
		    }
		}

		pWin->optional->colormap = cmap;

		/*
		 * check on any children now matching the new colormap
		 */

		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
		{
		    if (pChild->optional->colormap == cmap)
			CheckWindowOptionalNeed (pChild);
		}

		xE.u.u.type = ColormapNotify;
		xE.u.colormap.window = pWin->drawable.id;
		xE.u.colormap.colormap = cmap;
		xE.u.colormap.new = xTrue;
		xE.u.colormap.state = IsMapInstalled(cmap, pWin);
		DeliverEvents(pWin, &xE, 1, NullWindow);
	    }
	    break;
	  case CWCursor:
	    cursorID = (Cursor ) *pVlist;
	    pVlist++;
	    /*
	     * install the new
	     */
	    if ( cursorID == None)
	    {
		if (pWin == WindowTable[pWin->drawable.pScreen->myNum])
		    pCursor = rootCursor;
		else
		    pCursor = (CursorPtr) None;
	    }
	    else
	    {
		pCursor = (CursorPtr)SecurityLookupIDByType(client, cursorID,
						RT_CURSOR, SecurityReadAccess);
		if (!pCursor)
		{
		    error = BadCursor;
		    client->errorValue = cursorID;
		    goto PatchUp;
		}
	    }

	    if (pCursor != wCursor (pWin))
	    {
		/*
		 * patch up child windows so they don't lose cursors.
		 */

		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
		{
		    if (!pChild->optional && !pChild->cursorIsNone &&
			!MakeWindowOptional (pChild))
		    {
			error = BadAlloc;
			goto PatchUp;
		    }
		}

		pOldCursor = 0;
		if (pCursor == (CursorPtr) None)
		{
		    pWin->cursorIsNone = TRUE;
		    if (pWin->optional)
		    {
			pOldCursor = pWin->optional->cursor;
			pWin->optional->cursor = (CursorPtr) None;
			checkOptional = TRUE;
		    }
		} else {
		    if (!pWin->optional)
		    {
			if (!MakeWindowOptional (pWin))
			{
			    error = BadAlloc;
			    goto PatchUp;
			}
		    }
		    else if (pWin->parent && pCursor == wCursor (pWin->parent))
			checkOptional = TRUE;
		    pOldCursor = pWin->optional->cursor;
		    pWin->optional->cursor = pCursor;
		    pCursor->refcnt++;
		    pWin->cursorIsNone = FALSE;
		    /*
		     * check on any children now matching the new cursor
		     */

		    for (pChild=pWin->firstChild; pChild; pChild=pChild->nextSib)
		    {
			if (pChild->optional &&
			    (pChild->optional->cursor == pCursor))
			    CheckWindowOptionalNeed (pChild);
		    }
		}

		if (pWin->realized)
		    WindowHasNewCursor( pWin);

		/* Can't free cursor until here - old cursor
		 * is needed in WindowHasNewCursor
		 */
		if (pOldCursor)
		    FreeCursor (pOldCursor, (Cursor)0);
	    }
	    break;
	 default:
	    error = BadValue;
	    client->errorValue = vmask;
	    goto PatchUp;
      }
      vmaskCopy |= index2;
    }
PatchUp:
    if (checkOptional)
	CheckWindowOptionalNeed (pWin);

	/* We SHOULD check for an error value here XXX */
    (*pScreen->ChangeWindowAttributes)(pWin, vmaskCopy);

    /* 
	If the border contents have changed, redraw the border. 
	Note that this has to be done AFTER pScreen->ChangeWindowAttributes
	for the tile to be rotated, and the correct function selected.
    */
    if (((vmaskCopy & (CWBorderPixel | CWBorderPixmap)) || borderRelative)
	&& pWin->viewable && HasBorder (pWin))
    {
	RegionRec exposed;

	REGION_INIT(pScreen, &exposed, NullBox, 0);
	REGION_SUBTRACT(pScreen, &exposed, &pWin->borderClip, &pWin->winSize);
	(*pWin->drawable.pScreen->PaintWindowBorder)(pWin, &exposed, PW_BORDER);
	REGION_UNINIT(pScreen, &exposed);
    }
    return error;
}


/*****
 * GetWindowAttributes
 *    Notice that this is different than ChangeWindowAttributes
 *****/

void
GetWindowAttributes(pWin, client, wa)
    register WindowPtr pWin;
    ClientPtr client;
    xGetWindowAttributesReply *wa;
{
    wa->type = X_Reply;
    wa->bitGravity = pWin->bitGravity;
    wa->winGravity = pWin->winGravity;
    if (pWin->forcedBS && pWin->backingStore != Always)
	wa->backingStore = NotUseful;
    else
	wa->backingStore = pWin->backingStore;
    wa->length = (sizeof(xGetWindowAttributesReply) -
		 sizeof(xGenericReply)) >> 2;
    wa->sequenceNumber = client->sequence;
    wa->backingBitPlanes =  wBackingBitPlanes (pWin);
    wa->backingPixel =  wBackingPixel (pWin);
    wa->saveUnder = (BOOL)pWin->saveUnder;
    wa->override = pWin->overrideRedirect;
    if (!pWin->mapped)
	wa->mapState = IsUnmapped;
    else if (pWin->realized)
	wa->mapState = IsViewable;
    else
	wa->mapState = IsUnviewable;

    wa->colormap =  wColormap (pWin);
    wa->mapInstalled = (wa->colormap == None) ? xFalse
				: IsMapInstalled(wa->colormap, pWin);

    wa->yourEventMask = EventMaskForClient(pWin, client);
    wa->allEventMasks = pWin->eventMask | wOtherEventMasks (pWin);
    wa->doNotPropagateMask = wDontPropagateMask (pWin);
    wa->class = pWin->drawable.class;
    wa->visualID = wVisual (pWin);
}


WindowPtr
MoveWindowInStack(pWin, pNextSib)
    register WindowPtr pWin, pNextSib;
{
    register WindowPtr pParent = pWin->parent;
    WindowPtr pFirstChange = pWin; /* highest window where list changes */

    if (pWin->nextSib != pNextSib)
    {
	if (!pNextSib)	      /* move to bottom */
	{
	    if (pParent->firstChild == pWin)
		pParent->firstChild = pWin->nextSib;
	    /* if (pWin->nextSib) */	 /* is always True: pNextSib == NULL
					  * and pWin->nextSib != pNextSib
					  * therefore pWin->nextSib != NULL */
	    pFirstChange = pWin->nextSib;
	    pWin->nextSib->prevSib = pWin->prevSib;
	    if (pWin->prevSib)
		pWin->prevSib->nextSib = pWin->nextSib;