/*
* Compute the visibility of a shaped window
*/
int
miShapedWindowIn (RegionPtr universe, RegionPtr bounding,
BoxPtr rect, int x, int y)
{
BoxRec box;
BoxPtr boundBox;
int nbox;
Bool someIn, someOut;
int t, x1, y1, x2, y2;
nbox = RegionNumRects (bounding);
boundBox = RegionRects (bounding);
someIn = someOut = FALSE;
x1 = rect->x1;
y1 = rect->y1;
x2 = rect->x2;
y2 = rect->y2;
while (nbox--)
{
if ((t = boundBox->x1 + x) < x1)
t = x1;
box.x1 = t;
if ((t = boundBox->y1 + y) < y1)
t = y1;
box.y1 = t;
if ((t = boundBox->x2 + x) > x2)
t = x2;
box.x2 = t;
if ((t = boundBox->y2 + y) > y2)
t = y2;
box.y2 = t;
if (box.x1 > box.x2)
box.x2 = box.x1;
if (box.y1 > box.y2)
box.y2 = box.y1;
switch (RegionContainsRect(universe, &box))
{
case rgnIN:
if (someOut)
return rgnPART;
someIn = TRUE;
break;
case rgnOUT:
if (someIn)
return rgnPART;
someOut = TRUE;
break;
default:
return rgnPART;
}
boundBox++;
}
if (someIn)
return rgnIN;
return rgnOUT;
}
static bool
fbGlyphIn(GCPtr gc, int x, int y, int width, int height)
{
BoxRec box;
BoxPtr extents = RegionExtents(gc->pCompositeClip);
/*
* Check extents by hand to avoid 16 bit overflows
*/
if (x < (int) extents->x1 || (int) extents->x2 < x + width)
return FALSE;
if (y < (int) extents->y1 || (int) extents->y2 < y + height)
return FALSE;
box.x1 = x;
box.x2 = x + width;
box.y1 = y;
box.y2 = y + height;
return RegionContainsRect(gc->pCompositeClip, &box) == rgnIN;
}
Bool
fbGlyphIn(RegionPtr pRegion, int x, int y, int width, int height)
{
BoxRec box;
BoxPtr pExtents = RegionExtents(pRegion);
/*
* Check extents by hand to avoid 16 bit overflows
*/
if (x < (int) pExtents->x1)
return FALSE;
if ((int) pExtents->x2 < x + width)
return FALSE;
if (y < (int) pExtents->y1)
return FALSE;
if ((int) pExtents->y2 < y + height)
return FALSE;
box.x1 = x;
box.x2 = x + width;
box.y1 = y;
box.y2 = y + height;
return RegionContainsRect(pRegion, &box) == rgnIN;
}
static Bool
_glamor_put_image(DrawablePtr drawable, GCPtr gc, int depth, int x, int y,
int w, int h, int left_pad, int image_format, char *bits, Bool fallback)
{
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv =
glamor_get_pixmap_private(pixmap);
RegionPtr clip;
int x_off, y_off;
Bool ret = FALSE;
PixmapPtr temp_pixmap, sub_pixmap;
glamor_pixmap_private *temp_pixmap_priv;
BoxRec box;
int stride;
glamor_get_drawable_deltas(drawable, pixmap, &x_off, &y_off);
clip = fbGetCompositeClip(gc);
if (image_format == XYBitmap) {
assert(depth == 1);
goto fail;
}
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) {
glamor_fallback("has no fbo.\n");
goto fail;
}
if (image_format != ZPixmap) {
glamor_fallback("non-ZPixmap\n");
goto fail;
}
if (!glamor_set_planemask(pixmap, gc->planemask)) {
goto fail;
}
/* create a temporary pixmap and upload the bits to that
* pixmap, then apply clip copy it to the destination pixmap.*/
stride = PixmapBytePad(w, depth);
box.x1 = x + drawable->x;
box.y1 = y + drawable->y;
box.x2 = x + w + drawable->x;
box.y2 = y + h + drawable->y;
if ((clip != NULL && RegionContainsRect(clip, &box) != rgnIN)
|| gc->alu != GXcopy) {
temp_pixmap = glamor_create_pixmap(drawable->pScreen, w, h, depth, 0);
if (temp_pixmap == NULL)
goto fail;
temp_pixmap_priv = glamor_get_pixmap_private(temp_pixmap);
if (GLAMOR_PIXMAP_PRIV_IS_PICTURE(pixmap_priv)) {
temp_pixmap_priv->base.picture = pixmap_priv->base.picture;
temp_pixmap_priv->base.is_picture = pixmap_priv->base.is_picture;
}
glamor_upload_sub_pixmap_to_texture(temp_pixmap, 0, 0, w, h,
stride, bits, 0);
glamor_copy_area(&temp_pixmap->drawable, drawable, gc, 0, 0, w, h, x, y);
glamor_destroy_pixmap(temp_pixmap);
} else {
glamor_upload_sub_pixmap_to_texture(pixmap, x + drawable->x + x_off, y + drawable->y + y_off,
w, h, stride, bits, 0);
}
ret = TRUE;
goto done;
fail:
glamor_set_planemask(pixmap, ~0);
if (!fallback
&& glamor_ddx_fallback_check_pixmap(&pixmap->drawable))
goto done;
glamor_fallback("to %p (%c)\n",
drawable, glamor_get_drawable_location(drawable));
sub_pixmap = glamor_get_sub_pixmap(pixmap, x + x_off + drawable->x,
y + y_off + drawable->y, w, h,
GLAMOR_ACCESS_RW);
if (sub_pixmap) {
if (clip != NULL)
pixman_region_translate (clip, -x - drawable->x, -y - drawable->y);
fbPutImage(&sub_pixmap->drawable, gc, depth, 0, 0, w, h,
left_pad, image_format, bits);
glamor_put_sub_pixmap(sub_pixmap, pixmap,
x + x_off + drawable->x,
y + y_off + drawable->y,
w, h, GLAMOR_ACCESS_RW);
if (clip != NULL)
pixman_region_translate (clip, x + drawable->x, y + drawable->y);
} else
fbPutImage(drawable, gc, depth, x, y, w, h,
left_pad, image_format, bits);
ret = TRUE;
done:
return ret;
}
/*
*-----------------------------------------------------------------------
* miComputeClips --
* Recompute the clipList, borderClip, exposed and borderExposed
* regions for pParent and its children. Only viewable windows are
* taken into account.
*
* Results:
* None.
*
* Side Effects:
* clipList, borderClip, exposed and borderExposed are altered.
* A VisibilityNotify event may be generated on the parent window.
*
*-----------------------------------------------------------------------
*/
static void
miComputeClips (
WindowPtr pParent,
ScreenPtr pScreen,
RegionPtr universe,
VTKind kind,
RegionPtr exposed ) /* for intermediate calculations */
{
int dx,
dy;
RegionRec childUniverse;
WindowPtr pChild;
int oldVis, newVis;
BoxRec borderSize;
RegionRec childUnion;
Bool overlap;
RegionPtr borderVisible;
/*
* Figure out the new visibility of this window.
* The extent of the universe should be the same as the extent of
* the borderSize region. If the window is unobscured, this rectangle
* will be completely inside the universe (the universe will cover it
* completely). If the window is completely obscured, none of the
* universe will cover the rectangle.
*/
borderSize.x1 = pParent->drawable.x - wBorderWidth(pParent);
borderSize.y1 = pParent->drawable.y - wBorderWidth(pParent);
dx = (int) pParent->drawable.x + (int) pParent->drawable.width + wBorderWidth(pParent);
if (dx > 32767)
dx = 32767;
borderSize.x2 = dx;
dy = (int) pParent->drawable.y + (int) pParent->drawable.height + wBorderWidth(pParent);
if (dy > 32767)
dy = 32767;
borderSize.y2 = dy;
#ifdef COMPOSITE
/*
* In redirected drawing case, reset universe to borderSize
*/
if (pParent->redirectDraw != RedirectDrawNone)
{
if (miSetRedirectBorderClipProc)
{
if (TreatAsTransparent (pParent))
RegionEmpty(universe);
(*miSetRedirectBorderClipProc) (pParent, universe);
}
RegionCopy(universe, &pParent->borderSize);
}
#endif
oldVis = pParent->visibility;
switch (RegionContainsRect(universe, &borderSize))
{
case rgnIN:
newVis = VisibilityUnobscured;
break;
case rgnPART:
newVis = VisibilityPartiallyObscured;
{
RegionPtr pBounding;
if ((pBounding = wBoundingShape (pParent)))
{
switch (miShapedWindowIn (universe, pBounding,
&borderSize,
pParent->drawable.x,
pParent->drawable.y))
{
case rgnIN:
newVis = VisibilityUnobscured;
break;
case rgnOUT:
newVis = VisibilityFullyObscured;
break;
}
}
}
break;
default:
newVis = VisibilityFullyObscured;
break;
}
pParent->visibility = newVis;
if (oldVis != newVis &&
((pParent->eventMask | wOtherEventMasks(pParent)) & VisibilityChangeMask))
SendVisibilityNotify(pParent);
dx = pParent->drawable.x - pParent->valdata->before.oldAbsCorner.x;
dy = pParent->drawable.y - pParent->valdata->before.oldAbsCorner.y;
/*
* avoid computations when dealing with simple operations
*/
switch (kind) {
case VTMap:
case VTStack:
case VTUnmap:
break;
case VTMove:
if ((oldVis == newVis) &&
((oldVis == VisibilityFullyObscured) ||
(oldVis == VisibilityUnobscured)))
{
pChild = pParent;
while (1)
{
if (pChild->viewable)
{
if (pChild->visibility != VisibilityFullyObscured)
{
RegionTranslate(&pChild->borderClip,
dx, dy);
RegionTranslate(&pChild->clipList,
dx, dy);
pChild->drawable.serialNumber = NEXT_SERIAL_NUMBER;
if (pScreen->ClipNotify)
(* pScreen->ClipNotify) (pChild, dx, dy);
}
if (pChild->valdata)
{
RegionNull(&pChild->valdata->after.borderExposed);
if (HasParentRelativeBorder(pChild))
{
RegionSubtract(&pChild->valdata->after.borderExposed,
&pChild->borderClip,
&pChild->winSize);
}
RegionNull(&pChild->valdata->after.exposed);
}
if (pChild->firstChild)
{
pChild = pChild->firstChild;
continue;
}
}
while (!pChild->nextSib && (pChild != pParent))
pChild = pChild->parent;
if (pChild == pParent)
break;
pChild = pChild->nextSib;
}
return;
}
/* fall through */
default:
/*
* To calculate exposures correctly, we have to translate the old
* borderClip and clipList regions to the window's new location so there
* is a correspondence between pieces of the new and old clipping regions.
*/
if (dx || dy)
{
/*
* We translate the old clipList because that will be exposed or copied
* if gravity is right.
*/
RegionTranslate(&pParent->borderClip, dx, dy);
RegionTranslate(&pParent->clipList, dx, dy);
}
break;
case VTBroken:
RegionEmpty(&pParent->borderClip);
RegionEmpty(&pParent->clipList);
break;
}
borderVisible = pParent->valdata->before.borderVisible;
RegionNull(&pParent->valdata->after.borderExposed);
RegionNull(&pParent->valdata->after.exposed);
/*
* Since the borderClip must not be clipped by the children, we do
* the border exposure first...
*
* 'universe' is the window's borderClip. To figure the exposures, remove
* the area that used to be exposed from the new.
* This leaves a region of pieces that weren't exposed before.
*/
if (HasBorder (pParent))
{
if (borderVisible)
{
/*
* when the border changes shape, the old visible portions
* of the border will be saved by DIX in borderVisible --
* use that region and destroy it
*/
RegionSubtract(exposed, universe, borderVisible);
RegionDestroy(borderVisible);
}
else
{
RegionSubtract(exposed, universe, &pParent->borderClip);
}
if (HasParentRelativeBorder(pParent) && (dx || dy))
RegionSubtract(&pParent->valdata->after.borderExposed,
universe,
&pParent->winSize);
else
RegionSubtract(&pParent->valdata->after.borderExposed,
exposed, &pParent->winSize);
RegionCopy(&pParent->borderClip, universe);
/*
* To get the right clipList for the parent, and to make doubly sure
* that no child overlaps the parent's border, we remove the parent's
* border from the universe before proceeding.
*/
RegionIntersect(universe, universe, &pParent->winSize);
}
else
RegionCopy(&pParent->borderClip, universe);
if ((pChild = pParent->firstChild) && pParent->mapped)
{
RegionNull(&childUniverse);
RegionNull(&childUnion);
if ((pChild->drawable.y < pParent->lastChild->drawable.y) ||
((pChild->drawable.y == pParent->lastChild->drawable.y) &&
(pChild->drawable.x < pParent->lastChild->drawable.x)))
{
for (; pChild; pChild = pChild->nextSib)
{
if (pChild->viewable && !TreatAsTransparent(pChild))
RegionAppend(&childUnion, &pChild->borderSize);
}
}
else
{
for (pChild = pParent->lastChild; pChild; pChild = pChild->prevSib)
{
if (pChild->viewable && !TreatAsTransparent(pChild))
RegionAppend(&childUnion, &pChild->borderSize);
}
}
RegionValidate(&childUnion, &overlap);
for (pChild = pParent->firstChild;
pChild;
pChild = pChild->nextSib)
{
if (pChild->viewable) {
/*
* If the child is viewable, we want to remove its extents
* from the current universe, but we only re-clip it if
* it's been marked.
*/
if (pChild->valdata) {
/*
* Figure out the new universe from the child's
* perspective and recurse.
*/
RegionIntersect(&childUniverse,
universe,
&pChild->borderSize);
miComputeClips (pChild, pScreen, &childUniverse, kind,
exposed);
}
/*
* Once the child has been processed, we remove its extents
* from the current universe, thus denying its space to any
* other sibling.
*/
if (overlap && !TreatAsTransparent (pChild))
RegionSubtract(universe, universe,
&pChild->borderSize);
}
}
if (!overlap)
RegionSubtract(universe, universe, &childUnion);
RegionUninit(&childUnion);
RegionUninit(&childUniverse);
} /* if any children */
/*
* 'universe' now contains the new clipList for the parent window.
*
* To figure the exposure of the window we subtract the old clip from the
* new, just as for the border.
*/
if (oldVis == VisibilityFullyObscured ||
oldVis == VisibilityNotViewable)
{
RegionCopy(&pParent->valdata->after.exposed, universe);
}
else if (newVis != VisibilityFullyObscured &&
newVis != VisibilityNotViewable)
{
RegionSubtract(&pParent->valdata->after.exposed,
universe, &pParent->clipList);
}
/* HACK ALERT - copying contents of regions, instead of regions */
{
RegionRec tmp;
tmp = pParent->clipList;
pParent->clipList = *universe;
*universe = tmp;
}
#ifdef NOTDEF
RegionCopy(&pParent->clipList, universe);
#endif
pParent->drawable.serialNumber = NEXT_SERIAL_NUMBER;
if (pScreen->ClipNotify)
(* pScreen->ClipNotify) (pParent, dx, dy);
}
/* return 2, draw using clip */
int
rdp_get_clip(RegionPtr pRegion, DrawablePtr pDrawable, GCPtr pGC)
{
WindowPtr pWindow;
RegionPtr temp;
BoxRec box;
int rv;
rv = 0;
if (pDrawable->type == DRAWABLE_PIXMAP)
{
switch (pGC->clientClipType)
{
case CT_NONE:
rv = 1;
break;
case CT_REGION:
rv = 2;
RegionCopy(pRegion, pGC->clientClip);
break;
default:
rdpLog("unimp clip type %d\n", pGC->clientClipType);
break;
}
if (rv == 2) /* check if the clip is the entire pixmap */
{
box.x1 = 0;
box.y1 = 0;
box.x2 = pDrawable->width;
box.y2 = pDrawable->height;
if (RegionContainsRect(pRegion, &box) == rgnIN)
{
rv = 1;
}
}
}
else if (pDrawable->type == DRAWABLE_WINDOW)
{
pWindow = (WindowPtr)pDrawable;
if (pWindow->viewable)
{
if (pGC->subWindowMode == IncludeInferiors)
{
temp = &pWindow->borderClip;
}
else
{
temp = &pWindow->clipList;
}
if (RegionNotEmpty(temp))
{
switch (pGC->clientClipType)
{
case CT_NONE:
rv = 2;
RegionCopy(pRegion, temp);
break;
case CT_REGION:
rv = 2;
RegionCopy(pRegion, pGC->clientClip);
RegionTranslate(pRegion,
pDrawable->x + pGC->clipOrg.x,
pDrawable->y + pGC->clipOrg.y);
RegionIntersect(pRegion, pRegion, temp);
break;
default:
rdpLog("unimp clip type %d\n", pGC->clientClipType);
break;
}
if (rv == 2) /* check if the clip is the entire screen */
{
box.x1 = 0;
box.y1 = 0;
box.x2 = g_rdpScreen.width;
box.y2 = g_rdpScreen.height;
if (RegionContainsRect(pRegion, &box) == rgnIN)
{
rv = 1;
}
}
}
}
}
return rv;
}
RegionPtr
miHandleExposures(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,
GCPtr pGC, int srcx, int srcy, int width, int height,
int dstx, int dsty)
{
RegionPtr prgnSrcClip; /* drawable-relative source clip */
RegionRec rgnSrcRec;
RegionPtr prgnDstClip; /* drawable-relative dest clip */
RegionRec rgnDstRec;
BoxRec srcBox; /* unclipped source */
RegionRec rgnExposed; /* exposed region, calculated source-
relative, made dst relative to
intersect with visible parts of
dest and send events to client,
and then screen relative to paint
the window background
*/
WindowPtr pSrcWin;
BoxRec expBox = { 0, };
Bool extents;
/* avoid work if we can */
if (!pGC->graphicsExposures && pDstDrawable->type == DRAWABLE_PIXMAP)
return NULL;
srcBox.x1 = srcx;
srcBox.y1 = srcy;
srcBox.x2 = srcx + width;
srcBox.y2 = srcy + height;
if (pSrcDrawable->type != DRAWABLE_PIXMAP) {
BoxRec TsrcBox;
TsrcBox.x1 = srcx + pSrcDrawable->x;
TsrcBox.y1 = srcy + pSrcDrawable->y;
TsrcBox.x2 = TsrcBox.x1 + width;
TsrcBox.y2 = TsrcBox.y1 + height;
pSrcWin = (WindowPtr) pSrcDrawable;
if (pGC->subWindowMode == IncludeInferiors) {
prgnSrcClip = NotClippedByChildren(pSrcWin);
if ((RegionContainsRect(prgnSrcClip, &TsrcBox)) == rgnIN) {
RegionDestroy(prgnSrcClip);
return NULL;
}
}
else {
if ((RegionContainsRect(&pSrcWin->clipList, &TsrcBox)) == rgnIN)
return NULL;
prgnSrcClip = &rgnSrcRec;
RegionNull(prgnSrcClip);
RegionCopy(prgnSrcClip, &pSrcWin->clipList);
}
RegionTranslate(prgnSrcClip, -pSrcDrawable->x, -pSrcDrawable->y);
}
else {
BoxRec box;
if ((srcBox.x1 >= 0) && (srcBox.y1 >= 0) &&
(srcBox.x2 <= pSrcDrawable->width) &&
(srcBox.y2 <= pSrcDrawable->height))
return NULL;
box.x1 = 0;
box.y1 = 0;
box.x2 = pSrcDrawable->width;
box.y2 = pSrcDrawable->height;
prgnSrcClip = &rgnSrcRec;
RegionInit(prgnSrcClip, &box, 1);
pSrcWin = NULL;
}
if (pDstDrawable == pSrcDrawable) {
prgnDstClip = prgnSrcClip;
}
else if (pDstDrawable->type != DRAWABLE_PIXMAP) {
if (pGC->subWindowMode == IncludeInferiors) {
prgnDstClip = NotClippedByChildren((WindowPtr) pDstDrawable);
}
else {
prgnDstClip = &rgnDstRec;
RegionNull(prgnDstClip);
RegionCopy(prgnDstClip, &((WindowPtr) pDstDrawable)->clipList);
}
RegionTranslate(prgnDstClip, -pDstDrawable->x, -pDstDrawable->y);
}
else {
BoxRec box;
box.x1 = 0;
box.y1 = 0;
box.x2 = pDstDrawable->width;
box.y2 = pDstDrawable->height;
prgnDstClip = &rgnDstRec;
RegionInit(prgnDstClip, &box, 1);
}
/* drawable-relative source region */
RegionInit(&rgnExposed, &srcBox, 1);
/* now get the hidden parts of the source box */
RegionSubtract(&rgnExposed, &rgnExposed, prgnSrcClip);
/* move them over the destination */
RegionTranslate(&rgnExposed, dstx - srcx, dsty - srcy);
/* intersect with visible areas of dest */
RegionIntersect(&rgnExposed, &rgnExposed, prgnDstClip);
/* intersect with client clip region. */
if (pGC->clientClip)
RegionIntersect(&rgnExposed, &rgnExposed, pGC->clientClip);
/*
* If we have LOTS of rectangles, we decide to take the extents
* and force an exposure on that. This should require much less
* work overall, on both client and server. This is cheating, but
* isn't prohibited by the protocol ("spontaneous combustion" :-)
* for windows.
*/
extents = pGC->graphicsExposures &&
(RegionNumRects(&rgnExposed) > RECTLIMIT) &&
(pDstDrawable->type != DRAWABLE_PIXMAP);
if (pSrcWin) {
RegionPtr region;
if (!(region = wClipShape(pSrcWin)))
region = wBoundingShape(pSrcWin);
/*
* If you try to CopyArea the extents of a shaped window, compacting the
* exposed region will undo all our work!
*/
if (extents && pSrcWin && region &&
(RegionContainsRect(region, &srcBox) != rgnIN))
extents = FALSE;
}
if (extents) {
expBox = *RegionExtents(&rgnExposed);
RegionReset(&rgnExposed, &expBox);
}
if ((pDstDrawable->type != DRAWABLE_PIXMAP) &&
(((WindowPtr) pDstDrawable)->backgroundState != None)) {
WindowPtr pWin = (WindowPtr) pDstDrawable;
/* make the exposed area screen-relative */
RegionTranslate(&rgnExposed, pDstDrawable->x, pDstDrawable->y);
if (extents) {
/* PaintWindow doesn't clip, so we have to */
RegionIntersect(&rgnExposed, &rgnExposed, &pWin->clipList);
}
pDstDrawable->pScreen->PaintWindow((WindowPtr) pDstDrawable,
&rgnExposed, PW_BACKGROUND);
if (extents) {
RegionReset(&rgnExposed, &expBox);
}
else
RegionTranslate(&rgnExposed, -pDstDrawable->x, -pDstDrawable->y);
}
if (prgnDstClip == &rgnDstRec) {
RegionUninit(prgnDstClip);
}
else if (prgnDstClip != prgnSrcClip) {
RegionDestroy(prgnDstClip);
}
if (prgnSrcClip == &rgnSrcRec) {
RegionUninit(prgnSrcClip);
}
else {
RegionDestroy(prgnSrcClip);
}
if (pGC->graphicsExposures) {
/* don't look */
RegionPtr exposed = RegionCreate(NullBox, 0);
*exposed = rgnExposed;
return exposed;
}
else {
RegionUninit(&rgnExposed);
return NULL;
}
}
Bool
miMarkOverlappedWindows(WindowPtr pWin, WindowPtr pFirst, WindowPtr *ppLayerWin)
{
BoxPtr box;
WindowPtr pChild, pLast;
Bool anyMarked = FALSE;
MarkWindowProcPtr MarkWindow = pWin->drawable.pScreen->MarkWindow;
/* single layered systems are easy */
if (ppLayerWin)
*ppLayerWin = pWin;
if (pWin == pFirst) {
/* Blindly mark pWin and all of its inferiors. This is a slight
* overkill if there are mapped windows that outside pWin's border,
* but it's better than wasting time on RectIn checks.
*/
pChild = pWin;
while (1) {
if (pChild->viewable) {
if (RegionBroken(&pChild->winSize))
SetWinSize(pChild);
if (RegionBroken(&pChild->borderSize))
SetBorderSize(pChild);
(*MarkWindow) (pChild);
if (pChild->firstChild) {
pChild = pChild->firstChild;
continue;
}
}
while (!pChild->nextSib && (pChild != pWin))
pChild = pChild->parent;
if (pChild == pWin)
break;
pChild = pChild->nextSib;
}
anyMarked = TRUE;
pFirst = pFirst->nextSib;
}
if ((pChild = pFirst)) {
box = RegionExtents(&pWin->borderSize);
pLast = pChild->parent->lastChild;
while (1) {
if (pChild->viewable) {
if (RegionBroken(&pChild->winSize))
SetWinSize(pChild);
if (RegionBroken(&pChild->borderSize))
SetBorderSize(pChild);
if (RegionContainsRect(&pChild->borderSize, box)) {
(*MarkWindow) (pChild);
anyMarked = TRUE;
if (pChild->firstChild) {
pChild = pChild->firstChild;
continue;
}
}
}
while (!pChild->nextSib && (pChild != pLast))
pChild = pChild->parent;
if (pChild == pLast)
break;
pChild = pChild->nextSib;
}
}
if (anyMarked)
(*MarkWindow) (pWin->parent);
return anyMarked;
}