void MainWindow::on_actionCopy_triggered()
{
    m_timelineDock->show();
    m_timelineDock->raise();
    if (!m_timelineDock->selection().isEmpty())
        m_timelineDock->copyClip(m_timelineDock->selection().first().y(), m_timelineDock->selection().first().x());
}
void MainWindow::on_actionCopy_triggered()
{
    m_timelineDock->show();
    m_timelineDock->raise();
    if (!m_timelineDock->selection().isEmpty())
        m_timelineDock->copyClip(m_timelineDock->selection().first().y(), m_timelineDock->selection().first().x());
}