nextcloud-desktop/shell_integration/windows/NCOverlays/NCOverlayFactory.cpp
Andy Scherzinger 5fe94ea149 docs(reuse): Migrate to SPDX header
Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>
2025-05-07 09:28:53 +02:00

88 lines
1.8 KiB
C++

/*
* SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2014 ownCloud GmbH
* SPDX-FileCopyrightText: 2000-2013 Liferay, Inc. All rights reserved
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include <windows.h>
#include <new>
#include "NCOverlayFactory.h"
#include "NCOverlay.h"
extern long dllReferenceCount;
NCOverlayFactory::NCOverlayFactory(int state)
: _referenceCount(1), _state(state)
{
InterlockedIncrement(&dllReferenceCount);
}
NCOverlayFactory::~NCOverlayFactory()
{
InterlockedDecrement(&dllReferenceCount);
}
IFACEMETHODIMP NCOverlayFactory::QueryInterface(REFIID riid, void **ppv)
{
HRESULT hResult = S_OK;
if (IsEqualIID(IID_IUnknown, riid) ||
IsEqualIID(IID_IClassFactory, riid))
{
*ppv = static_cast<IUnknown *>(this);
AddRef();
}
else
{
hResult = E_NOINTERFACE;
*ppv = nullptr;
}
return hResult;
}
IFACEMETHODIMP_(ULONG) NCOverlayFactory::AddRef()
{
return InterlockedIncrement(&_referenceCount);
}
IFACEMETHODIMP_(ULONG) NCOverlayFactory::Release()
{
ULONG cRef = InterlockedDecrement(&_referenceCount);
if (0 == cRef)
{
delete this;
}
return cRef;
}
IFACEMETHODIMP NCOverlayFactory::CreateInstance(
IUnknown *pUnkOuter, REFIID riid, void **ppv)
{
HRESULT hResult = CLASS_E_NOAGGREGATION;
if (pUnkOuter) { return hResult; }
hResult = E_OUTOFMEMORY;
auto lrOverlay = new (std::nothrow) NCOverlay(_state);
if (!lrOverlay) { return hResult; }
hResult = lrOverlay->QueryInterface(riid, ppv);
lrOverlay->Release();
return hResult;
}
IFACEMETHODIMP NCOverlayFactory::LockServer(BOOL fLock)
{
if (fLock) {
InterlockedIncrement(&dllReferenceCount);
} else {
InterlockedDecrement(&dllReferenceCount);
}
return S_OK;
}