Method mouseMoveEvent

launcher/ui/instanceview/InstanceView.cpp:339–395

}

void InstanceView::mouseMoveEvent(QMouseEvent *event)
{
    executeDelayedItemsLayout();

    QPoint topLeft;
    QPoint visualPos = event->pos();
    QPoint geometryPos = event->pos() + offset();

    if (state() == ExpandingState || state() == CollapsingState)
    {
        return;
    }

    if (state() == DraggingState)
    {
        topLeft = m_pressedPosition - offset();
        if ((topLeft - event->pos()).manhattanLength() > QApplication::startDragDistance())
        {
            m_pressedIndex = QModelIndex();
            startDrag(model()->supportedDragActions());
            setState(NoState);
            stopAutoScroll();
        }
        return;
    }

    if (selectionMode() != SingleSelection)
    {
        topLeft = m_pressedPosition - offset();
    }
    else
    {
        topLeft = geometryPos;
    }

    if (m_pressedIndex.isValid() && (state() != DragSelectingState) &&
        (event->buttons() != Qt::NoButton) && !selectedIndexes().isEmpty())
    {
        setState(DraggingState);
        return;
    }

    if ((event->buttons() & Qt::LeftButton) && selectionModel())
    {
        setState(DragSelectingState);

        setSelection(QRect(visualPos, visualPos), QItemSelectionModel::ClearAndSelect);
        QModelIndex index = indexAt(visualPos);

        // set at the end because it might scroll the view
        if (index.isValid() && (index != selectionModel()->currentIndex()) &&
            (index.flags() & Qt::ItemIsEnabled))
        {
            selectionModel()->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
        }
    }
}