mibstore.c

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	if (pixExposed){
	    REGION_UNION(pDst->pScreen, winExposed, winExposed, pixExposed);
	    REGION_DESTROY(pDst->pScreen, pixExposed);
	}
    } else
	winExposed = pixExposed;

    EPILOGUE (pGC);

    return winExposed;
}

/*-
 *-----------------------------------------------------------------------
 * miBSCopyPlane --
 *
 * Results:
 *	None.
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static RegionPtr
miBSCopyPlane (pSrc, pDst, pGC, srcx, srcy, w, h, dstx, dsty, plane)
    DrawablePtr	  pSrc;
    DrawablePtr	  pDst;
    register GC   *pGC;
    int     	  srcx,
		  srcy;
    int     	  w,
		  h;
    int     	  dstx,
		  dsty;
    unsigned long  plane;
{
    BoxPtr	pExtents;
    long	dx, dy;
    int		bsrcx, bsrcy, bw, bh, bdstx, bdsty;
    RegionPtr	winExposed = 0, pixExposed = 0;
    SETUP_BACKING(pDst, pGC);

    PROLOGUE(pGC);

    if ((pSrc != pDst) ||
	(!miBSDoCopy((WindowPtr)pSrc, pGC, srcx, srcy, w, h, dstx, dsty,
		     plane,  pGC->ops->CopyPlane, &winExposed)))
    {
	/*
	 * always copy to the backing store first, miBSDoCopy
	 * returns FALSE if the *source* region is disjoint
	 * from the backing store saved region.  So, copying
	 * *to* the backing store is always safe
	 */
	if (pGC->clientClipType != CT_PIXMAP)
	{
	    /*
	     * adjust srcx, srcy, w, h, dstx, dsty to be clipped to
	     * the backing store.  An unnecessary optimisation,
	     * but a useful one when GetSpans is slow.
	     */
	    pExtents = REGION_EXTENTS(pDst->pScreen,
				      (RegionPtr)pBackingGC->clientClip);
	    bsrcx = srcx;
	    bsrcy = srcy;
	    bw = w;
	    bh = h;
	    bdstx = dstx;
	    bdsty = dsty;
	    dx = pExtents->x1 - bdstx;
	    if (dx > 0)
	    {
		bsrcx += dx;
		bdstx += dx;
		bw -= dx;
	    }
	    dy = pExtents->y1 - bdsty;
	    if (dy > 0)
	    {
		bsrcy += dy;
		bdsty += dy;
		bh -= dy;
	    }
	    dx = (bdstx + bw) - pExtents->x2;
	    if (dx > 0)
		bw -= dx;
	    dy = (bdsty + bh) - pExtents->y2;
	    if (dy > 0)
		bh -= dy;
	    if (bw > 0 && bh > 0)
		pixExposed = (* pBackingGC->ops->CopyPlane) (pSrc, 
				    pBackingDrawable,
				    pBackingGC, bsrcx, bsrcy, bw, bh,
				    bdstx - pBackingStore->x,
				    bdsty - pBackingStore->y, plane);
	}
	else
	    pixExposed = (* pBackingGC->ops->CopyPlane) (pSrc, 
				    pBackingDrawable,
				    pBackingGC, srcx, srcy, w, h,
				    dstx - pBackingStore->x,
				    dsty - pBackingStore->y, plane);

	winExposed = (* pGC->ops->CopyPlane) (pSrc, pDst, pGC, srcx, srcy, w, h,
			      dstx, dsty, plane);
	
    }

    /*
     * compute the composite graphics exposure region
     */
    if (winExposed)
    {
	if (pixExposed)
	{
	    REGION_UNION(pDst->pScreen, winExposed, winExposed, pixExposed);
	    REGION_DESTROY(pDst->pScreen, pixExposed);
	}
    } else
	winExposed = pixExposed;

    EPILOGUE (pGC);

    return winExposed;
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolyPoint --
 *	Perform a PolyPoint, routing output to backing-store as needed.
 *
 * Results:
 *	None.
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSPolyPoint (pDrawable, pGC, mode, npt, pptInit)
    DrawablePtr pDrawable;
    GCPtr	pGC;
    int		mode;		/* Origin or Previous */
    int		npt;
    xPoint 	*pptInit;
{
    xPoint	  *pptCopy;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pptCopy = (xPoint *)ALLOCATE_LOCAL(npt*sizeof(xPoint));
    if (pptCopy)
    {
	copyPoints(pptInit, pptCopy, npt, mode);

	(* pGC->ops->PolyPoint) (pDrawable, pGC, mode, npt, pptInit);

	(* pBackingGC->ops->PolyPoint) (pBackingDrawable,
				   pBackingGC, mode, npt, pptCopy);

	DEALLOCATE_LOCAL(pptCopy);
    }

    EPILOGUE (pGC);
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolyLines --
 *	Perform a Polylines, routing output to backing-store as needed.
 *
 * Results:
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSPolylines (pDrawable, pGC, mode, npt, pptInit)
    DrawablePtr	  pDrawable;
    GCPtr   	  pGC;
    int	    	  mode;
    int	    	  npt;
    DDXPointPtr	  pptInit;
{
    DDXPointPtr	pptCopy;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pptCopy = (DDXPointPtr)ALLOCATE_LOCAL(npt*sizeof(DDXPointRec));
    if (pptCopy)
    {
	copyPoints(pptInit, pptCopy, npt, mode);

	(* pGC->ops->Polylines)(pDrawable, pGC, mode, npt, pptInit);
	(* pBackingGC->ops->Polylines)(pBackingDrawable,
				  pBackingGC, mode, npt, pptCopy);
	DEALLOCATE_LOCAL(pptCopy);
    }

    EPILOGUE (pGC);
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolySegment --
 *	Perform a PolySegment, routing output to backing-store as needed.
 *
 * Results:
 *	None.
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSPolySegment(pDrawable, pGC, nseg, pSegs)
    DrawablePtr pDrawable;
    GCPtr 	pGC;
    int		nseg;
    xSegment	*pSegs;
{
    xSegment	*pSegsCopy;

    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pSegsCopy = (xSegment *)ALLOCATE_LOCAL(nseg*sizeof(xSegment));
    if (pSegsCopy)
    {
	copyData(pSegs, pSegsCopy, nseg << 1, MoreCopy0);

	(* pGC->ops->PolySegment)(pDrawable, pGC, nseg, pSegs);
	(* pBackingGC->ops->PolySegment)(pBackingDrawable,
				    pBackingGC, nseg, pSegsCopy);

	DEALLOCATE_LOCAL(pSegsCopy);
    }

    EPILOGUE (pGC);
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolyRectangle --
 *	Perform a PolyRectangle, routing output to backing-store as needed.
 *
 * Results:
 *	None
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSPolyRectangle(pDrawable, pGC, nrects, pRects)
    DrawablePtr	pDrawable;
    GCPtr	pGC;
    int		nrects;
    xRectangle	*pRects;
{
    xRectangle	*pRectsCopy;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pRectsCopy =(xRectangle *)ALLOCATE_LOCAL(nrects*sizeof(xRectangle));
    if (pRectsCopy)
    {
	copyData(pRects, pRectsCopy, nrects, MoreCopy2);

	(* pGC->ops->PolyRectangle)(pDrawable, pGC, nrects, pRects);
	(* pBackingGC->ops->PolyRectangle)(pBackingDrawable,
				      pBackingGC, nrects, pRectsCopy);

	DEALLOCATE_LOCAL(pRectsCopy);
    }

    EPILOGUE (pGC);
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolyArc --
 *	Perform a PolyArc, routing output to backing-store as needed.
 *
 * Results:
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSPolyArc(pDrawable, pGC, narcs, parcs)
    DrawablePtr	pDrawable;
    GCPtr	pGC;
    int		narcs;
    xArc	*parcs;
{
    xArc  *pArcsCopy;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pArcsCopy = (xArc *)ALLOCATE_LOCAL(narcs*sizeof(xArc));
    if (pArcsCopy)
    {
	copyData(parcs, pArcsCopy, narcs, MoreCopy4);

	(* pGC->ops->PolyArc)(pDrawable, pGC, narcs, parcs);
	(* pBackingGC->ops->PolyArc)(pBackingDrawable, pBackingGC,
				narcs, pArcsCopy);

	DEALLOCATE_LOCAL(pArcsCopy);
    }

    EPILOGUE (pGC);
}

/*-
 *-----------------------------------------------------------------------
 * miBSFillPolygon --
 *	Perform a FillPolygon, routing output to backing-store as needed.
 *
 * Results:
 *	None.
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSFillPolygon(pDrawable, pGC, shape, mode, count, pPts)
    DrawablePtr		pDrawable;
    register GCPtr	pGC;
    int			shape, mode;
    register int	count;
    DDXPointPtr		pPts;
{
    DDXPointPtr	pPtsCopy;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pPtsCopy = (DDXPointPtr)ALLOCATE_LOCAL(count*sizeof(DDXPointRec));
    if (pPtsCopy)
    {
	copyPoints(pPts, pPtsCopy, count, mode);
	(* pGC->ops->FillPolygon)(pDrawable, pGC, shape, mode, count, pPts);
	(* pBackingGC->ops->FillPolygon)(pBackingDrawable,
				    pBackingGC, shape, mode,
				    count, pPtsCopy);

	DEALLOCATE_LOCAL(pPtsCopy);
    }

    EPILOGUE (pGC);
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolyFillRect --
 *	Perform a PolyFillRect, routing output to backing-store as needed.
 *
 * Results:
 *	None.
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSPolyFillRect(pDrawable, pGC, nrectFill, prectInit)
    DrawablePtr pDrawable;
    GCPtr	pGC;
    int		nrectFill; 	/* number of rectangles to fill */
    xRectangle	*prectInit;  	/* Pointer to first rectangle to fill */
{
    xRectangle	*pRectCopy;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pRectCopy =
	(xRectangle *)ALLOCATE_LOCAL(nrectFill*sizeof(xRectangle));
    if (pRectCopy)
    {
	copyData(prectInit, pRectCopy, nrectFill, MoreCopy2);

	(* pGC->ops->PolyFillRect)(pDrawable, pGC, nrectFill, prectInit);
	(* pBackingGC->ops->PolyFillRect)(pBackingDrawable,
				     pBackingGC, nrectFill, pRectCopy);

	DEALLOCATE_LOCAL(pRectCopy);
    }

    EPILOGUE (pGC);
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolyFillArc --
 *	Perform a PolyFillArc, routing output to backing-store as needed.
 *
 * Results:
 *	None.
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static void
miBSPolyFillArc(pDrawable, pGC, narcs, parcs)
    DrawablePtr	pDrawable;
    GCPtr	pGC;
    int		narcs;
    xArc	*parcs;
{
    xArc  *pArcsCopy;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    pArcsCopy = (xArc *)ALLOCATE_LOCAL(narcs*sizeof(xArc));
    if (pArcsCopy)
    {
	copyData(parcs, pArcsCopy, narcs, MoreCopy4);
	(* pGC->ops->PolyFillArc)(pDrawable, pGC, narcs, parcs);
	(* pBackingGC->ops->PolyFillArc)(pBackingDrawable,
				    pBackingGC, narcs, pArcsCopy);
	DEALLOCATE_LOCAL(pArcsCopy);
    }

    EPILOGUE (pGC);
}


/*-
 *-----------------------------------------------------------------------
 * miBSPolyText8 --
 *	Perform a PolyText8, routing output to backing-store as needed.
 *
 * Results:
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static int
miBSPolyText8(pDrawable, pGC, x, y, count, chars)
    DrawablePtr pDrawable;
    GCPtr	pGC;
    int		x, y;
    int 	count;
    char	*chars;
{
    int	    result;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    result = (* pGC->ops->PolyText8)(pDrawable, pGC, x, y, count, chars);
    (* pBackingGC->ops->PolyText8)(pBackingDrawable, pBackingGC,
				   x - pBackingStore->x, y - pBackingStore->y,
				   count, chars);

    EPILOGUE (pGC);
    return result;
}

/*-
 *-----------------------------------------------------------------------
 * miBSPolyText16 --
 *	Perform a PolyText16, routing output to backing-store as needed.
 *
 * Results:
 *
 * Side Effects:
 *
 *-----------------------------------------------------------------------
 */
static int
miBSPolyText16(pDrawable, pGC, x, y, count, chars)
    DrawablePtr pDrawable;
    GCPtr	pGC;
    int		x, y;
    int		count;
    unsigned short *chars;
{
    int	result;
    SETUP_BACKING (pDrawable, pGC);

    PROLOGUE(pGC);

    result = (* pGC->ops->PolyText16)(pDrawable, pGC, x, y, count, chars);
    (* pBackingGC->ops->PolyText16)(pBackingDrawable, pBackingGC,