C++ (Cpp) dragDropItem Examples

Example #1

File: qjackctlConnect.cpp Project: joelmo/qjackctl

void qjackctlClientListView::dragMoveEvent ( QDragMoveEvent *pDragMoveEvent )
{
	if (pDragMoveEvent->source() != this &&
		pDragMoveEvent->mimeData()->hasText() &&
		dragDropItem(pDragMoveEvent->pos())) {
		pDragMoveEvent->accept();
	} else {
		pDragMoveEvent->ignore();
	}
}

Example #2

File: qtractorFileListView.cpp Project: rncbc/qtractor

void qtractorFileListView::dropEvent ( QDropEvent *pDropEvent )
{
	QTreeWidgetItem *pDropItem = dragDropItem(pDropEvent->pos());
	if (!canDropItem(pDropItem)) {
		dragLeaveEvent(NULL);
		m_pDragItem = NULL;
		return;
	}

	// Not quite parent, but the exact drop target...
	qtractorFileGroupItem *pParentItem
		= static_cast<qtractorFileGroupItem *> (pDropItem);
	const bool bOutdent
		= (pDropEvent->pos().x() < QTreeWidget::indentation());

	// Get access to the pertinent drop data...
	int iUpdate = 0;
	const QMimeData *pMimeData = pDropEvent->mimeData();
	// Let's see how many files there are...
	if (pMimeData->hasUrls()) {
		QListIterator<QUrl> iter(pMimeData->urls());
		iter.toBack();
		while (iter.hasPrevious()) {
			const QString& sPath = iter.previous().toLocalFile();
			// Is it one from ourselves (file item) ?...
			if (m_pDragItem && m_pDragItem->type() == FileItem) {
				if (dropItem(pDropItem, findItem(sPath, FileItem), bOutdent))
					++iUpdate;
			} else if (addFileItem(sPath, pParentItem))
				++iUpdate;
		}
	} else if (pMimeData->hasText()) {
		// Maybe its just a new convenience group...
		const QString& sText = pMimeData->text();
		// Is it one from ourselves (group item) ?...
		if (m_pDragItem && m_pDragItem->type() == GroupItem) {
			if (dropItem(pDropItem, findItem(sText, GroupItem), bOutdent))
				++iUpdate;
		} else if (addGroupItem(sText, pParentItem))
			++iUpdate;
	}

	// Teke care of change modification...
	if (iUpdate > 0) {
		// Make parent open, anyway...
		qtractorFileGroupItem *pGroupItem = groupItem(pDropItem);
		if (pGroupItem)
			pGroupItem->setOpen(true);
		// Notify that we've changed something.
		emit contentsChanged();
	}

	dragLeaveEvent(NULL);
	m_pDragItem = NULL;
}

Example #3

File: qjackctlConnect.cpp Project: joelmo/qjackctl

void qjackctlClientListView::dropEvent( QDropEvent *pDropEvent )
{
	if (pDropEvent->source() != this &&
		pDropEvent->mimeData()->hasText() &&
		dragDropItem(pDropEvent->pos())) {
		const QString sText = pDropEvent->mimeData()->text();
		qjackctlConnect *pConnect = m_pConnectView->binding();
		if (!sText.isEmpty() && pConnect)
			pConnect->connectSelected();
	}

	dragLeaveEvent(0);
}

Example #4

File: qtractorFileListView.cpp Project: rncbc/qtractor

void qtractorFileListView::dragMoveEvent ( QDragMoveEvent *pDragMoveEvent )
{
	if (!canDecodeEvent(pDragMoveEvent)) {
		pDragMoveEvent->ignore();
		return;
	}

	QTreeWidgetItem *pDropItem = dragDropItem(pDragMoveEvent->pos());
	if (canDropItem(pDropItem)) {
		if (!pDragMoveEvent->isAccepted()) {
			pDragMoveEvent->setDropAction(Qt::MoveAction);
			pDragMoveEvent->accept();
		}
	} else {
		pDragMoveEvent->ignore();
	}
}

Example #5

File: qtractorFileListView.cpp Project: rncbc/qtractor

void qtractorFileListView::dragEnterEvent ( QDragEnterEvent *pDragEnterEvent )
{
#if 0
	if (!canDecodeEvent(pDragEnterEvent)) {
		pDragEnterEvent->ignore();
		return;
	}

	QTreeWidgetItem *pDropItem = dragDropItem(pDragEnterEvent->pos());
	if (canDropItem(pDropItem)) {
		if (!pDragEnterEvent->isAccepted()) {
			pDragEnterEvent->setDropAction(Qt::MoveAction);
			pDragEnterEvent->accept();
		}
	} else {
		pDragEnterEvent->ignore();
	}
#else
	// Always accept the drag-enter event,
	// so let we deal with it during move later...
	pDragEnterEvent->accept();
#endif
}