int
compUnredirectSubwindows(ClientPtr pClient, WindowPtr pWin, int update)
{
CompSubwindowsPtr csw = GetCompSubwindows(pWin);
CompClientWindowPtr ccw;
if (!csw)
return BadValue;
for (ccw = csw->clients; ccw; ccw = ccw->next)
if (ccw->update == update && CLIENT_ID(ccw->id) == pClient->index) {
FreeResource(ccw->id, RT_NONE);
return Success;
}
return BadValue;
}
/*
* Free one of the per-client per-subwindows resources,
* which frees one redirect per subwindow
*/
void
compFreeClientSubwindows (WindowPtr pWin, XID id)
{
CompSubwindowsPtr csw = GetCompSubwindows (pWin);
CompClientWindowPtr ccw, *prev;
WindowPtr pChild;
if (!csw)
return;
for (prev = &csw->clients; (ccw = *prev); prev = &ccw->next)
{
if (ccw->id == id)
{
ClientPtr pClient = clients[CLIENT_ID(id)];
*prev = ccw->next;
if (ccw->update == CompositeRedirectManual)
{
/*
* tell damage extension that damage events for this client are
* critical output
*/
DamageExtSetCritical (pClient, FALSE);
csw->update = CompositeRedirectAutomatic;
if (pWin->mapped)
(*pWin->drawable.pScreen->ClearToBackground)(pWin, 0, 0, 0, 0, TRUE);
}
/*
* Unredirect all existing subwindows
*/
for (pChild = pWin->lastChild; pChild; pChild = pChild->prevSib)
(void) compUnredirectWindow (pClient, pChild, ccw->update);
free(ccw);
break;
}
}
/*
* Check if all of the per-client records are gone
*/
if (!csw->clients)
{
dixSetPrivate(&pWin->devPrivates, CompSubwindowsPrivateKey, NULL);
free(csw);
}
}
int
compUnredirectOneSubwindow (WindowPtr pParent, WindowPtr pWin)
{
CompSubwindowsPtr csw = GetCompSubwindows (pParent);
CompClientWindowPtr ccw;
if (!csw)
return Success;
for (ccw = csw->clients; ccw; ccw = ccw->next)
{
int ret = compUnredirectWindow (clients[CLIENT_ID(ccw->id)],
pWin, ccw->update);
if (ret != Success)
return ret;
}
return Success;
}
int
compRedirectSubwindows (ClientPtr pClient, WindowPtr pWin, int update)
{
CompSubwindowsPtr csw = GetCompSubwindows (pWin);
CompClientWindowPtr ccw;
WindowPtr pChild;
/*
* Only one Manual update is allowed
*/
if (csw && update == CompositeRedirectManual)
for (ccw = csw->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 (!csw)
{
csw = malloc(sizeof (CompSubwindowsRec));
if (!csw)
{
free(ccw);
return BadAlloc;
}
csw->update = CompositeRedirectAutomatic;
csw->clients = 0;
dixSetPrivate(&pWin->devPrivates, CompSubwindowsPrivateKey, csw);
}
/*
* Redirect all existing windows
*/
for (pChild = pWin->lastChild; pChild; pChild = pChild->prevSib)
{
int ret = compRedirectWindow (pClient, pChild, update);
if (ret != Success)
{
for (pChild = pChild->nextSib; pChild; pChild = pChild->nextSib)
(void) compUnredirectWindow (pClient, pChild, update);
if (!csw->clients)
{
free(csw);
dixSetPrivate(&pWin->devPrivates, CompSubwindowsPrivateKey, 0);
}
free(ccw);
return ret;
}
}
/*
* Hook into subwindows list
*/
ccw->next = csw->clients;
csw->clients = ccw;
if (!AddResource (ccw->id, CompositeClientSubwindowsType, pWin))
return BadAlloc;
if (ccw->update == CompositeRedirectManual)
{
csw->update = CompositeRedirectManual;
/*
* tell damage extension that damage events for this client are
* critical output
*/
DamageExtSetCritical (pClient, TRUE);
}
return Success;
}
