/**
* Union the window's accum-dirty and prev-accum-dirty regions with the
* incoming region.
* Called by crHashtableWalk() via vncspuGetScreenRects().
*/
static void
WindowDirtyUnionCB(unsigned long key, void *windowData, void *regionData)
{
WindowInfo *window = (WindowInfo *) windowData;
RegionPtr regionUnion = (RegionPtr) regionData;
RegionRec accumScrn; /* accumulated region, in screen coords */
Bool overlap;
miRegionInit(&accumScrn, NULL, 0); /* init local var */
CRASSERT(miValidRegion(&window->accumDirtyRegion));
CRASSERT(miValidRegion(&window->prevAccumDirtyRegion));
/*
crDebug("accum area: %d prev accum: %d",
miRegionArea(&window->accumDirtyRegion),
miRegionArea(&window->prevAccumDirtyRegion));
*/
/* at first, accumScrn region is in window coords */
REGION_UNION(&accumScrn,
&window->accumDirtyRegion,
&window->prevAccumDirtyRegion);
/* intersect with window bounds */
REGION_INTERSECT(&accumScrn,
&accumScrn,
&window->clipRegion);
REGION_VALIDATE(&accumScrn, &overlap);
/* change y=0=bottom to y=0=top */
InvertRegion(&accumScrn, window->height ? window->height : 1);
if (REGION_NUM_RECTS(&accumScrn) == 1 &&
accumScrn.extents.x1 == 0 &&
accumScrn.extents.y1 == 0 &&
accumScrn.extents.x2 == 1 &&
accumScrn.extents.y2 == 1) {
/* empty / sentinal region */
}
else {
/* add window offset */
miTranslateRegion(&accumScrn, window->xPos, window->yPos);
}
/* now, accumScrn region is in screen coords */
REGION_UNION(regionUnion, regionUnion, &accumScrn);
REGION_UNINIT(&accumScrn); /* done with local var */
}
static Bool
localPurgeUnlockedOffscreenAreas(ScreenPtr pScreen)
{
FBManagerPtr offman;
FBLinkPtr pLink, tmp, pPrev = NULL;
RegionRec FreedRegion;
Bool anyUsed = FALSE;
offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
pLink = offman->UsedAreas;
if(!pLink) return TRUE;
while(pLink) {
if(pLink->area.RemoveAreaCallback) {
(*pLink->area.RemoveAreaCallback)(&pLink->area);
REGION_INIT(pScreen, &FreedRegion, &(pLink->area.box), 1);
REGION_APPEND(pScreen, offman->FreeBoxes, &FreedRegion);
REGION_UNINIT(pScreen, &FreedRegion);
if(pPrev)
pPrev->next = pLink->next;
else offman->UsedAreas = pLink->next;
tmp = pLink;
pLink = pLink->next;
xfree(tmp);
offman->NumUsedAreas--;
anyUsed = TRUE;
} else {
pPrev = pLink;
pLink = pLink->next;
}
}
if(anyUsed) {
REGION_VALIDATE(pScreen, offman->FreeBoxes, &anyUsed);
SendCallFreeBoxCallbacks(offman);
}
return TRUE;
}
/*
*-----------------------------------------------------------------------
* RootlessComputeClips --
* 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
RootlessComputeClips (WindowPtr pParent, ScreenPtr pScreen,
RegionPtr universe, VTKind kind, RegionPtr exposed)
{
int dx,
dy;
RegionRec childUniverse;
register WindowPtr pChild;
int oldVis, newVis;
BoxRec borderSize;
RegionRec childUnion;
Bool overlap;
RegionPtr borderVisible;
Bool resized;
/*
* 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;
oldVis = pParent->visibility;
switch (RECT_IN_REGION( pScreen, universe, &borderSize))
{
case rgnIN:
newVis = VisibilityUnobscured;
break;
case rgnPART:
newVis = VisibilityPartiallyObscured;
{
RegionPtr pBounding;
if ((pBounding = wBoundingShape (pParent)))
{
switch (RootlessShapedWindowIn (pScreen, 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)
{
REGION_TRANSLATE( pScreen, &pChild->borderClip,
dx, dy);
REGION_TRANSLATE( pScreen, &pChild->clipList,
dx, dy);
pChild->drawable.serialNumber = NEXT_SERIAL_NUMBER;
if (pScreen->ClipNotify)
(* pScreen->ClipNotify) (pChild, dx, dy);
}
if (pChild->valdata)
{
REGION_NULL(pScreen,
&pChild->valdata->after.borderExposed);
if (HasParentRelativeBorder(pChild))
{
REGION_SUBTRACT(pScreen,
&pChild->valdata->after.borderExposed,
&pChild->borderClip,
&pChild->winSize);
}
REGION_NULL(pScreen, &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.
*/
REGION_TRANSLATE( pScreen, &pParent->borderClip, dx, dy);
REGION_TRANSLATE( pScreen, &pParent->clipList, dx, dy);
}
break;
case VTBroken:
REGION_EMPTY (pScreen, &pParent->borderClip);
REGION_EMPTY (pScreen, &pParent->clipList);
break;
}
borderVisible = pParent->valdata->before.borderVisible;
resized = pParent->valdata->before.resized;
REGION_NULL(pScreen, &pParent->valdata->after.borderExposed);
REGION_NULL(pScreen, &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
*/
REGION_SUBTRACT( pScreen, exposed, universe, borderVisible);
REGION_DESTROY( pScreen, borderVisible);
}
else
{
REGION_SUBTRACT( pScreen, exposed, universe, &pParent->borderClip);
}
if (HasParentRelativeBorder(pParent) && (dx || dy)) {
REGION_SUBTRACT( pScreen, &pParent->valdata->after.borderExposed,
universe,
&pParent->winSize);
} else {
REGION_SUBTRACT( pScreen, &pParent->valdata->after.borderExposed,
exposed, &pParent->winSize);
}
REGION_COPY( pScreen, &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.
*/
REGION_INTERSECT( pScreen, universe, universe, &pParent->winSize);
}
else
REGION_COPY( pScreen, &pParent->borderClip, universe);
if ((pChild = pParent->firstChild) && pParent->mapped)
{
REGION_NULL(pScreen, &childUniverse);
REGION_NULL(pScreen, &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)
REGION_APPEND( pScreen, &childUnion, &pChild->borderSize);
}
}
else
{
for (pChild = pParent->lastChild; pChild; pChild = pChild->prevSib)
{
if (pChild->viewable)
REGION_APPEND( pScreen, &childUnion, &pChild->borderSize);
}
}
REGION_VALIDATE( pScreen, &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.
*/
REGION_INTERSECT( pScreen, &childUniverse,
universe,
&pChild->borderSize);
RootlessComputeClips (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)
REGION_SUBTRACT( pScreen, universe, universe,
&pChild->borderSize);
}
}
if (!overlap)
REGION_SUBTRACT( pScreen, universe, universe, &childUnion);
REGION_UNINIT( pScreen, &childUnion);
REGION_UNINIT( pScreen, &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)
{
REGION_COPY( pScreen, &pParent->valdata->after.exposed, universe);
}
else if (newVis != VisibilityFullyObscured &&
newVis != VisibilityNotViewable)
{
REGION_SUBTRACT( pScreen, &pParent->valdata->after.exposed,
universe, &pParent->clipList);
}
/*
* One last thing: backing storage. We have to try to save what parts of
* the window are about to be obscured. We can just subtract the universe
* from the old clipList and get the areas that were in the old but aren't
* in the new and, hence, are about to be obscured.
*/
if (pParent->backStorage && !resized)
{
REGION_SUBTRACT( pScreen, exposed, &pParent->clipList, universe);
(* pScreen->SaveDoomedAreas)(pParent, exposed, dx, dy);
}
/* HACK ALERT - copying contents of regions, instead of regions */
{
RegionRec tmp;
tmp = pParent->clipList;
pParent->clipList = *universe;
*universe = tmp;
}
#ifdef NOTDEF
REGION_COPY( pScreen, &pParent->clipList, universe);
#endif
pParent->drawable.serialNumber = NEXT_SERIAL_NUMBER;
if (pScreen->ClipNotify)
(* pScreen->ClipNotify) (pParent, dx, dy);
}
