/*
* Free one of the per-client per-window resources, clearing
* redirect and the per-window pointer as appropriate
*/
void
compFreeClientWindow (WindowPtr pWin, XID id)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
CompWindowPtr cw = GetCompWindow (pWin);
CompClientWindowPtr ccw, *prev;
Bool anyMarked = FALSE;
WindowPtr pLayerWin;
PixmapPtr pPixmap = NULL;
if (!cw)
return;
for (prev = &cw->clients; (ccw = *prev); prev = &ccw->next)
{
if (ccw->id == id)
{
*prev = ccw->next;
if (ccw->update == CompositeRedirectManual)
cw->update = CompositeRedirectAutomatic;
free(ccw);
break;
}
}
if (!cw->clients)
{
anyMarked = compMarkWindows (pWin, &pLayerWin);
if (pWin->redirectDraw != RedirectDrawNone) {
pPixmap = (*pScreen->GetWindowPixmap) (pWin);
compSetParentPixmap (pWin);
}
if (cw->damage)
DamageDestroy (cw->damage);
RegionUninit(&cw->borderClip);
dixSetPrivate(&pWin->devPrivates, CompWindowPrivateKey, NULL);
free(cw);
}
else if (cw->update == CompositeRedirectAutomatic &&
!cw->damageRegistered && pWin->redirectDraw != RedirectDrawNone)
{
anyMarked = compMarkWindows (pWin, &pLayerWin);
DamageRegister (&pWin->drawable, cw->damage);
cw->damageRegistered = TRUE;
pWin->redirectDraw = RedirectDrawAutomatic;
DamageDamageRegion(&pWin->drawable, &pWin->borderSize);
}
if (anyMarked)
compHandleMarkedWindows (pWin, pLayerWin);
if (pPixmap) {
compRestoreWindow (pWin, pPixmap);
(*pScreen->DestroyPixmap) (pPixmap);
}
}
/*
* Redirect one window for one client
*/
int
compRedirectWindow(ClientPtr pClient, WindowPtr pWin, int update)
{
CompWindowPtr cw = GetCompWindow(pWin);
CompClientWindowPtr ccw;
CompScreenPtr cs = GetCompScreen(pWin->drawable.pScreen);
WindowPtr pLayerWin = NULL;
Bool anyMarked = FALSE;
if (pWin == cs->pOverlayWin) {
return Success;
}
if (!pWin->parent)
return BadMatch;
/*
* Only one Manual update is allowed
*/
if (cw && update == CompositeRedirectManual)
for (ccw = cw->clients; ccw; ccw = ccw->next)
if (ccw->update == CompositeRedirectManual)
return BadAccess;
/*
* Allocate per-client per-window structure
* The client *could* allocate multiple, but while supported,
* it is not expected to be common
*/
ccw = malloc(sizeof(CompClientWindowRec));
if (!ccw)
return BadAlloc;
ccw->id = FakeClientID(pClient->index);
ccw->update = update;
/*
* Now make sure there's a per-window structure to hang this from
*/
if (!cw) {
cw = malloc(sizeof(CompWindowRec));
if (!cw) {
free(ccw);
return BadAlloc;
}
cw->damage = DamageCreate(compReportDamage,
compDestroyDamage,
DamageReportNonEmpty,
FALSE, pWin->drawable.pScreen, pWin);
if (!cw->damage) {
free(ccw);
free(cw);
return BadAlloc;
}
anyMarked = compMarkWindows(pWin, &pLayerWin);
RegionNull(&cw->borderClip);
cw->update = CompositeRedirectAutomatic;
cw->clients = 0;
cw->oldx = COMP_ORIGIN_INVALID;
cw->oldy = COMP_ORIGIN_INVALID;
cw->damageRegistered = FALSE;
cw->damaged = FALSE;
cw->pOldPixmap = NullPixmap;
dixSetPrivate(&pWin->devPrivates, CompWindowPrivateKey, cw);
}
ccw->next = cw->clients;
cw->clients = ccw;
if (!AddResource(ccw->id, CompositeClientWindowType, pWin))
return BadAlloc;
if (ccw->update == CompositeRedirectManual) {
if (!anyMarked)
anyMarked = compMarkWindows(pWin, &pLayerWin);
if (cw->damageRegistered) {
DamageUnregister(&pWin->drawable, cw->damage);
cw->damageRegistered = FALSE;
}
cw->update = CompositeRedirectManual;
}
else if (cw->update == CompositeRedirectAutomatic && !cw->damageRegistered) {
if (!anyMarked)
anyMarked = compMarkWindows(pWin, &pLayerWin);
}
if (!compCheckRedirect(pWin)) {
FreeResource(ccw->id, RT_NONE);
return BadAlloc;
}
if (anyMarked)
compHandleMarkedWindows(pWin, pLayerWin);
return Success;
}