int UIDnDHandler::dragCheckPending(ulong screenID)
{
int rc;
#ifdef VBOX_WITH_DRAG_AND_DROP_GH
LogFlowFunc(("enmOpMode=%RU32, fIsPending=%RTbool, screenID=%RU32\n", m_enmOpMode, m_fIsPending, screenID));
{
QMutexLocker AutoReadLock(&m_ReadLock);
if ( m_enmOpMode != DNDMODE_UNKNOWN
&& m_enmOpMode != DNDMODE_GUESTTOHOST) /* Wrong mode set? */
return VINF_SUCCESS;
if (m_fIsPending) /* Pending operation is in progress. */
return VINF_SUCCESS;
}
QMutexLocker AutoWriteLock(&m_WriteLock);
m_fIsPending = true;
AutoWriteLock.unlock();
/**
* How this works: Source is asking the target if there is any DnD
* operation pending, when the mouse leaves the guest window. On
* return there is some info about a running DnD operation
* (or defaultAction is KDnDAction_Ignore if not). With
* this information we create a Qt QDrag object with our own QMimeType
* implementation and call exec.
*
* Note: This function *blocks* until the actual drag'n drop operation
* has been finished (successfully or not)!
*/
CGuest guest = m_pSession->guest();
/* Clear our current data set. */
m_dataSource.lstFormats.clear();
m_dataSource.vecActions.clear();
/* Ask the guest if there is a drag and drop operation pending (on the guest). */
QVector<QString> vecFormats;
m_dataSource.defaultAction = m_dndSource.DragIsPending(screenID, vecFormats, m_dataSource.vecActions);
LogRelMax3(10, ("DnD: Default action is: 0x%x\n", m_dataSource.defaultAction));
LogRelMax3(10, ("DnD: Number of supported guest actions: %d\n", m_dataSource.vecActions.size()));
for (int i = 0; i < m_dataSource.vecActions.size(); i++)
LogRelMax3(10, ("DnD: \tAction %d: 0x%x\n", i, m_dataSource.vecActions.at(i)));
LogRelMax3(10, ("DnD: Number of supported guest formats: %d\n", vecFormats.size()));
for (int i = 0; i < vecFormats.size(); i++)
{
const QString &strFmtGuest = vecFormats.at(i);
LogRelMax3(10, ("DnD: \tFormat %d: %s\n", i, strFmtGuest.toUtf8().constData()));
}
LogFlowFunc(("defaultAction=0x%x, vecFormatsSize=%d, vecActionsSize=%d\n",
m_dataSource.defaultAction, vecFormats.size(), m_dataSource.vecActions.size()));
if ( m_dataSource.defaultAction != KDnDAction_Ignore
&& vecFormats.size())
{
for (int i = 0; i < vecFormats.size(); i++)
{
const QString &strFormat = vecFormats.at(i);
m_dataSource.lstFormats << strFormat;
}
rc = VINF_SUCCESS; /* There's a valid pending drag and drop operation on the guest. */
}
else /* No format data from the guest arrived yet. */
rc = VERR_NO_DATA;
AutoWriteLock.relock();
m_fIsPending = false;
AutoWriteLock.unlock();
#else /* !VBOX_WITH_DRAG_AND_DROP_GH */
NOREF(screenID);
rc = VERR_NOT_SUPPORTED;
#endif /* VBOX_WITH_DRAG_AND_DROP_GH */
LogFlowFuncLeaveRC(rc);
return rc;
}
void UIDnDHandler::setOpMode(DNDOPMODE enmMode)
{
QMutexLocker AutoWriteLock(&m_WriteLock);
m_enmOpMode = enmMode;
LogFunc(("Operation mode is now: %RU32\n", m_enmOpMode));
}
void UIDnDHandler::setMode(DNDMODE enmMode)
{
QMutexLocker AutoWriteLock(&m_WriteLock);
m_enmMode = enmMode;
LogFlowFunc(("Mode is now: %RU32\n", m_enmMode));
}
