miwindow.c

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	{
	    bsExposed = (*pScreen->TranslateBackingStore)
			     (pWin, nx - x, ny - y, pRegion, oldx, oldy);
	}
    }

    if (WasViewable)
    {
	/* avoid the border */
	if (HasBorder (pWin))
	{
	    int	offx, offy, dx, dy;

	    /* kruft to avoid double translates for each gravity */
	    offx = 0;
	    offy = 0;
	    for (g = 0; g <= StaticGravity; g++)
	    {
		if (!gravitate[g])
		    continue;

		/* align winSize to gravitate[g].
		 * winSize is in new coordinates,
		 * gravitate[g] is still in old coordinates */
		GravityTranslate (x, y, oldx, oldy, dw, dh, g, &nx, &ny);
		
		dx = (oldx - nx) - offx;
		dy = (oldy - ny) - offy;
		if (dx || dy)
		{
		    REGION_TRANSLATE(pScreen, &pWin->winSize, dx, dy);
		    offx += dx;
		    offy += dy;
		}
		REGION_INTERSECT(pScreen, gravitate[g], gravitate[g],
				 &pWin->winSize);
	    }
	    /* get winSize back where it belongs */
	    if (offx || offy)
		REGION_TRANSLATE(pScreen, &pWin->winSize, -offx, -offy);
	}
	/*
	 * add screen bits to the appropriate bucket
	 */

	if (oldWinClip)
	{
	    /*
	     * clip to new clipList
	     */
	    REGION_COPY(pScreen, pRegion, oldWinClip);
	    REGION_TRANSLATE(pScreen, pRegion, nx - oldx, ny - oldy);
	    REGION_INTERSECT(pScreen, oldWinClip, pRegion, &pWin->clipList);
	    /*
	     * don't step on any gravity bits which will be copied after this
	     * region.	Note -- this assumes that the regions will be copied
	     * in gravity order.
	     */
	    for (g = pWin->bitGravity + 1; g <= StaticGravity; g++)
	    {
		if (gravitate[g])
		    REGION_SUBTRACT(pScreen, oldWinClip, oldWinClip,
					gravitate[g]);
	    }
	    REGION_TRANSLATE(pScreen, oldWinClip, oldx - nx, oldy - ny);
	    g = pWin->bitGravity;
	    if (!gravitate[g])
		gravitate[g] = oldWinClip;
	    else
	    {
		REGION_UNION(pScreen, gravitate[g], gravitate[g], oldWinClip);
		REGION_DESTROY(pScreen, oldWinClip);
	    }
	}

	/*
	 * move the bits on the screen
	 */

	destClip = NULL;

	for (g = 0; g <= StaticGravity; g++)
	{
	    if (!gravitate[g])
		continue;

	    GravityTranslate (x, y, oldx, oldy, dw, dh, g, &nx, &ny);

	    oldpt.x = oldx + (x - nx);
	    oldpt.y = oldy + (y - ny);

	    /* Note that gravitate[g] is *translated* by CopyWindow */

	    /* only copy the remaining useful bits */

	    REGION_INTERSECT(pScreen, gravitate[g], gravitate[g], oldRegion);

	    /* clip to not overwrite already copied areas */

	    if (destClip) {
		REGION_TRANSLATE(pScreen, destClip, oldpt.x - x, oldpt.y - y);
		REGION_SUBTRACT(pScreen, gravitate[g], gravitate[g], destClip);
		REGION_TRANSLATE(pScreen, destClip, x - oldpt.x, y - oldpt.y);
	    }

	    /* and move those bits */

	    if (oldpt.x != x || oldpt.y != y)
		(*pWin->drawable.pScreen->CopyWindow)(pWin, oldpt, gravitate[g]);

	    /* remove any overwritten bits from the remaining useful bits */

	    REGION_SUBTRACT(pScreen, oldRegion, oldRegion, gravitate[g]);

	    /*
	     * recompute exposed regions of child windows
	     */
	
	    for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
	    {
		if (pChild->winGravity != g)
		    continue;
		REGION_INTERSECT(pScreen, pRegion,
				       &pChild->borderClip, gravitate[g]);
		TraverseTree (pChild, miRecomputeExposures, (pointer)pRegion);
	    }

	    /*
	     * remove the successfully copied regions of the
	     * window from its exposed region
	     */

	    if (g == pWin->bitGravity)
		REGION_SUBTRACT(pScreen, &pWin->valdata->after.exposed,
				     &pWin->valdata->after.exposed, gravitate[g]);
	    if (!destClip)
		destClip = gravitate[g];
	    else
	    {
		REGION_UNION(pScreen, destClip, destClip, gravitate[g]);
		REGION_DESTROY(pScreen, gravitate[g]);
	    }
	}

	REGION_DESTROY(pScreen, oldRegion);
	REGION_DESTROY(pScreen, pRegion);
	if (destClip)
	    REGION_DESTROY(pScreen, destClip);
	if (bsExposed)
	{
	    RegionPtr	valExposed = NullRegion;

	    if (pWin->valdata)
		valExposed = &pWin->valdata->after.exposed;
	    (*pScreen->WindowExposures) (pWin, valExposed, bsExposed);
	    if (valExposed)
		REGION_EMPTY(pScreen, valExposed);
	    REGION_DESTROY(pScreen, bsExposed);
	}
	if (anyMarked)
	    (*pScreen->HandleExposures)(pLayerWin->parent);
#ifdef DO_SAVE_UNDERS
	if (dosave)
	{
	    (*pScreen->PostChangeSaveUnder)(pLayerWin, pFirstChange);
	}
#endif /* DO_SAVE_UNDERS */
	if (anyMarked && pScreen->PostValidateTree)
	    (*pScreen->PostValidateTree)(pLayerWin->parent, pFirstChange,
					  VTOther);
    }
    else if (bsExposed)
    {
	(*pScreen->WindowExposures) (pWin, NullRegion, bsExposed);
	REGION_DESTROY(pScreen, bsExposed);
    }
    if (pWin->realized)
	WindowsRestructured ();
}

WindowPtr
miGetLayerWindow(pWin)
    WindowPtr pWin;
{
    return pWin->firstChild;
}

#ifdef SHAPE
/******
 *
 * miSetShape
 *    The border/window shape has changed.  Recompute winSize/borderSize
 *    and send appropriate exposure events
 */

void
miSetShape(pWin)
    register WindowPtr	pWin;
{
    Bool	WasViewable = (Bool)(pWin->viewable);
    register ScreenPtr pScreen = pWin->drawable.pScreen;
    Bool	anyMarked;
    WindowPtr	pParent = pWin->parent;
    RegionPtr	pOldClip, bsExposed;
#ifdef DO_SAVE_UNDERS
    Bool	dosave = FALSE;
#endif
    WindowPtr   pLayerWin;

    if (WasViewable)
    {
	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,
						      &pLayerWin);
	if (pWin->valdata)
	{
	    if (HasBorder (pWin))
	    {
		RegionPtr	borderVisible;

		borderVisible = REGION_CREATE(pScreen, NullBox, 1);
		REGION_SUBTRACT(pScreen, borderVisible,
				      &pWin->borderClip, &pWin->winSize);
		pWin->valdata->before.borderVisible = borderVisible;
	    }
	    pWin->valdata->before.resized = TRUE;
	}
    }

    SetWinSize (pWin);
    SetBorderSize (pWin);

    ResizeChildrenWinSize(pWin, 0, 0, 0, 0);

    if (WasViewable)
    {
	if (pWin->backStorage)
	{
	    pOldClip = REGION_CREATE(pScreen, NullBox, 1);
	    REGION_COPY(pScreen, pOldClip, &pWin->clipList);
	}

	anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pWin,
						(WindowPtr *)NULL);

#ifdef DO_SAVE_UNDERS
	if (DO_SAVE_UNDERS(pWin))
	{
	    dosave = (*pScreen->ChangeSaveUnder)(pLayerWin, pLayerWin);
	}
#endif /* DO_SAVE_UNDERS */

	if (anyMarked)
	    (*pScreen->ValidateTree)(pLayerWin->parent, NullWindow, VTOther);
    }

    if (pWin->backStorage &&
	((pWin->backingStore == Always) || WasViewable))
    {
	if (!WasViewable)
	    pOldClip = &pWin->clipList; /* a convenient empty region */
	bsExposed = (*pScreen->TranslateBackingStore)
			     (pWin, 0, 0, pOldClip,
			      pWin->drawable.x, pWin->drawable.y);
	if (WasViewable)
	    REGION_DESTROY(pScreen, pOldClip);
	if (bsExposed)
	{
	    RegionPtr	valExposed = NullRegion;
    
	    if (pWin->valdata)
		valExposed = &pWin->valdata->after.exposed;
	    (*pScreen->WindowExposures) (pWin, valExposed, bsExposed);
	    if (valExposed)
		REGION_EMPTY(pScreen, valExposed);
	    REGION_DESTROY(pScreen, bsExposed);
	}
    }
    if (WasViewable)
    {
	if (anyMarked)
	    (*pScreen->HandleExposures)(pLayerWin->parent);
#ifdef DO_SAVE_UNDERS
	if (dosave)
	    (*pScreen->PostChangeSaveUnder)(pLayerWin, pLayerWin);
#endif /* DO_SAVE_UNDERS */
	if (anyMarked && pScreen->PostValidateTree)
	    (*pScreen->PostValidateTree)(pLayerWin->parent, NullWindow, VTOther);
    }
    if (pWin->realized)
	WindowsRestructured ();
    CheckCursorConfinement(pWin);
}
#endif

/* Keeps the same inside(!) origin */

void
miChangeBorderWidth(pWin, width)
    register WindowPtr pWin;
    unsigned int width;
{
    WindowPtr pParent;
    int oldwidth;
    Bool anyMarked;
    register ScreenPtr pScreen;
    Bool WasViewable = (Bool)(pWin->viewable);
    Bool HadBorder;
#ifdef DO_SAVE_UNDERS
    Bool	dosave = FALSE;
#endif
    WindowPtr  pLayerWin;

    oldwidth = wBorderWidth (pWin);
    if (oldwidth == width)
	return;
    HadBorder = HasBorder(pWin);
    pScreen = pWin->drawable.pScreen;
    pParent = pWin->parent;
    if (WasViewable && width < oldwidth)
	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin, &pLayerWin);

    pWin->borderWidth = width;
    SetBorderSize (pWin);

    if (WasViewable)
    {
	if (width > oldwidth)
	{
	    anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,
							  &pLayerWin);
	    /*
	     * save the old border visible region to correctly compute
	     * borderExposed.
	     */
	    if (pWin->valdata && HadBorder)
	    {
		RegionPtr   borderVisible;
		borderVisible = REGION_CREATE(pScreen, NULL, 1);
		REGION_SUBTRACT(pScreen, borderVisible,
				      &pWin->borderClip, &pWin->winSize);
		pWin->valdata->before.borderVisible = borderVisible;
	    }
	}
#ifdef DO_SAVE_UNDERS
	if (DO_SAVE_UNDERS(pWin))
	{
	    dosave = (*pScreen->ChangeSaveUnder)(pLayerWin, pWin->nextSib);
	}
#endif /* DO_SAVE_UNDERS */

	if (anyMarked)
	{
	    (*pScreen->ValidateTree)(pLayerWin->parent, pLayerWin, VTOther);
	    (*pScreen->HandleExposures)(pLayerWin->parent);
	}
#ifdef DO_SAVE_UNDERS
	if (dosave)
	    (*pScreen->PostChangeSaveUnder)(pLayerWin, pWin->nextSib);
#endif /* DO_SAVE_UNDERS */
	if (anyMarked && pScreen->PostValidateTree)
	    (*pScreen->PostValidateTree)(pLayerWin->parent, pLayerWin,
					  VTOther);
    }
    if (pWin->realized)
	WindowsRestructured ();
}

void
miMarkUnrealizedWindow(pChild, pWin, fromConfigure)
    WindowPtr pChild;
    WindowPtr pWin;
    Bool fromConfigure;
{
    if ((pChild != pWin) || fromConfigure)
    {
	REGION_EMPTY(pChild->drawable.pScreen, &pChild->clipList);
	if (pChild->drawable.pScreen->ClipNotify)
	    (* pChild->drawable.pScreen->ClipNotify)(pChild, 0, 0);
	REGION_EMPTY(pChild->drawable.pScreen, &pChild->borderClip);
    }
}