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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdnd_p.h"
#if !(defined(QT_NO_DRAGANDDROP) && defined(QT_NO_CLIPBOARD))
#if defined(Q_OS_WINCE)
#include <shlobj.h>
#include "qguifunctions_wince.h"
#endif
QT_BEGIN_NAMESPACE
QOleEnumFmtEtc::QOleEnumFmtEtc(const QVector<FORMATETC> &fmtetcs)
{
m_isNull = false;
m_dwRefs = 1;
m_nIndex = 0;
for (int idx = 0; idx < fmtetcs.count(); ++idx) {
LPFORMATETC destetc = new FORMATETC();
if (copyFormatEtc(destetc, (LPFORMATETC)&(fmtetcs.at(idx)))) {
m_lpfmtetcs.append(destetc);
} else {
m_isNull = true;
delete destetc;
break;
}
}
}
QOleEnumFmtEtc::QOleEnumFmtEtc(const QVector<LPFORMATETC> &lpfmtetcs)
{
m_isNull = false;
m_dwRefs = 1;
m_nIndex = 0;
for (int idx = 0; idx < lpfmtetcs.count(); ++idx) {
LPFORMATETC srcetc = lpfmtetcs.at(idx);
LPFORMATETC destetc = new FORMATETC();
if (copyFormatEtc(destetc, srcetc)) {
m_lpfmtetcs.append(destetc);
} else {
m_isNull = true;
delete destetc;
break;
}
}
}
QOleEnumFmtEtc::~QOleEnumFmtEtc()
{
LPMALLOC pmalloc;
#if !defined(Q_OS_WINCE)
if (CoGetMalloc(MEMCTX_TASK, &pmalloc) == NOERROR) {
#else
if (SHGetMalloc(&pmalloc) == NOERROR) {
#endif
for (int idx = 0; idx < m_lpfmtetcs.count(); ++idx) {
LPFORMATETC tmpetc = m_lpfmtetcs.at(idx);
if (tmpetc->ptd)
pmalloc->Free(tmpetc->ptd);
delete tmpetc;
}
pmalloc->Release();
}
m_lpfmtetcs.clear();
}
bool QOleEnumFmtEtc::isNull() const
{
return m_isNull;
}
// IUnknown methods
STDMETHODIMP
QOleEnumFmtEtc::QueryInterface(REFIID riid, void FAR* FAR* ppvObj)
{
if (riid == IID_IUnknown || riid == IID_IEnumFORMATETC) {
*ppvObj = this;
AddRef();
return NOERROR;
}
*ppvObj = NULL;
return ResultFromScode(E_NOINTERFACE);
}
STDMETHODIMP_(ULONG)
QOleEnumFmtEtc::AddRef(void)
{
return ++m_dwRefs;
}
STDMETHODIMP_(ULONG)
QOleEnumFmtEtc::Release(void)
{
if (--m_dwRefs == 0) {
delete this;
return 0;
}
return m_dwRefs;
}
// IEnumFORMATETC methods
STDMETHODIMP
QOleEnumFmtEtc::Next(ULONG celt, LPFORMATETC rgelt, ULONG FAR* pceltFetched)
{
ULONG i=0;
ULONG nOffset;
if (rgelt == NULL)
return ResultFromScode(E_INVALIDARG);
while (i < celt) {
nOffset = m_nIndex + i;
if (nOffset < ULONG(m_lpfmtetcs.count())) {
copyFormatEtc((LPFORMATETC)&(rgelt[i]), m_lpfmtetcs.at(nOffset));
i++;
} else {
break;
}
}
m_nIndex += (WORD)i;
if (pceltFetched != NULL)
*pceltFetched = i;
if (i != celt)
return ResultFromScode(S_FALSE);
return NOERROR;
}
STDMETHODIMP
QOleEnumFmtEtc::Skip(ULONG celt)
{
ULONG i=0;
ULONG nOffset;
while (i < celt) {
nOffset = m_nIndex + i;
if (nOffset < ULONG(m_lpfmtetcs.count())) {
i++;
} else {
break;
}
}
m_nIndex += (WORD)i;
if (i != celt)
return ResultFromScode(S_FALSE);
return NOERROR;
}
STDMETHODIMP
QOleEnumFmtEtc::Reset()
{
m_nIndex = 0;
return NOERROR;
}
STDMETHODIMP
QOleEnumFmtEtc::Clone(LPENUMFORMATETC FAR* newEnum)
{
if (newEnum == NULL)
return ResultFromScode(E_INVALIDARG);
QOleEnumFmtEtc *result = new QOleEnumFmtEtc(m_lpfmtetcs);
result->m_nIndex = m_nIndex;
if (result->isNull()) {
delete result;
return ResultFromScode(E_OUTOFMEMORY);
} else {
*newEnum = result;
}
return NOERROR;
}
bool QOleEnumFmtEtc::copyFormatEtc(LPFORMATETC dest, LPFORMATETC src) const
{
if (dest == NULL || src == NULL)
return false;
*dest = *src;
if (src->ptd) {
LPVOID pout;
LPMALLOC pmalloc;
#if !defined(Q_OS_WINCE)
if (CoGetMalloc(MEMCTX_TASK, &pmalloc) != NOERROR)
#else
if (SHGetMalloc(&pmalloc) != NOERROR)
#endif
return false;
pout = (LPVOID)pmalloc->Alloc(src->ptd->tdSize);
memcpy(dest->ptd, src->ptd, size_t(src->ptd->tdSize));
pmalloc->Release();
}
return true;
}
QT_END_NAMESPACE
#endif // QT_NO_DRAGANDDROP && QT_NO_CLIPBOARD
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