static FBAreaPtr
localAllocateOffscreenArea(ScreenPtr pScreen,
int w, int h,
int gran,
MoveAreaCallbackProcPtr moveCB,
RemoveAreaCallbackProcPtr removeCB, void *privData)
{
FBManagerPtr offman;
FBAreaPtr area = NULL;
offman = (FBManagerPtr) dixLookupPrivate(&pScreen->devPrivates,
xf86FBScreenKey);
if ((area = AllocateArea(offman, w, h, gran, moveCB, removeCB, privData)))
SendCallFreeBoxCallbacks(offman);
return area;
}
static FBAreaPtr
localAllocateOffscreenArea(
ScreenPtr pScreen,
int w, int h,
int gran,
MoveAreaCallbackProcPtr moveCB,
RemoveAreaCallbackProcPtr removeCB,
pointer privData
){
FBManagerPtr offman;
FBAreaPtr area = NULL;
offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
if((area = AllocateArea(offman, w, h, gran, moveCB, removeCB, privData)))
SendCallFreeBoxCallbacks(offman);
return area;
}
static Bool
localResizeOffscreenArea(
FBAreaPtr resize,
int w, int h
){
FBManagerPtr offman;
ScreenPtr pScreen;
BoxRec OrigArea;
RegionRec FreedReg;
FBAreaPtr area = NULL;
FBLinkPtr pLink, newLink, pLinkPrev = NULL;
pScreen = resize->pScreen;
offman = pScreen->devPrivates[xf86FBScreenIndex].ptr;
/* find this link */
if(!(pLink = offman->UsedAreas))
return FALSE;
while(&(pLink->area) != resize) {
pLinkPrev = pLink;
pLink = pLink->next;
if(!pLink) return FALSE;
}
OrigArea.x1 = resize->box.x1;
OrigArea.x2 = resize->box.x2;
OrigArea.y1 = resize->box.y1;
OrigArea.y2 = resize->box.y2;
/* if it's smaller, this is easy */
if((w <= (resize->box.x2 - resize->box.x1)) &&
(h <= (resize->box.y2 - resize->box.y1))) {
RegionRec NewReg;
resize->box.x2 = resize->box.x1 + w;
resize->box.y2 = resize->box.y1 + h;
if((resize->box.y2 == OrigArea.y2) &&
(resize->box.x2 == OrigArea.x2))
return TRUE;
REGION_INIT(pScreen, &FreedReg, &OrigArea, 1);
REGION_INIT(pScreen, &NewReg, &(resize->box), 1);
REGION_SUBTRACT(pScreen, &FreedReg, &FreedReg, &NewReg);
REGION_UNION(pScreen, offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
REGION_UNINIT(pScreen, &FreedReg);
REGION_UNINIT(pScreen, &NewReg);
SendCallFreeBoxCallbacks(offman);
return TRUE;
}
/* otherwise we remove the old region */
REGION_INIT(pScreen, &FreedReg, &OrigArea, 1);
REGION_UNION(pScreen, offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
/* remove the old link */
if(pLinkPrev)
pLinkPrev->next = pLink->next;
else offman->UsedAreas = pLink->next;
/* and try to add a new one */
if((area = AllocateArea(offman, w, h, resize->granularity,
resize->MoveAreaCallback, resize->RemoveAreaCallback,
resize->devPrivate.ptr))) {
/* copy data over to our link and replace the new with old */
memcpy(resize, area, sizeof(FBArea));
pLinkPrev = NULL;
newLink = offman->UsedAreas;
while(&(newLink->area) != area) {
pLinkPrev = newLink;
newLink = newLink->next;
}
if(pLinkPrev)
pLinkPrev->next = newLink->next;
else offman->UsedAreas = newLink->next;
pLink->next = offman->UsedAreas;
offman->UsedAreas = pLink;
xfree(newLink);
/* AllocateArea added one but we really only exchanged one */
offman->NumUsedAreas--;
} else {
/* reinstate the old region */
REGION_SUBTRACT(pScreen, offman->FreeBoxes, offman->FreeBoxes, &FreedReg);
REGION_UNINIT(pScreen, &FreedReg);
pLink->next = offman->UsedAreas;
offman->UsedAreas = pLink;
return FALSE;
}
REGION_UNINIT(pScreen, &FreedReg);
SendCallFreeBoxCallbacks(offman);
return TRUE;
}
