Method mouseDoubleClickEvent

app/src/UI/WindowManager.cpp:2125–2152

* @brief Handles double-click events on window title bars to toggle maximize/restore. */

 * @brief Handles double-click events on window title bars to toggle maximize/restore.
 */
void UI::WindowManager::mouseDoubleClickEvent(QMouseEvent* event)
{
  m_focusedWindow = topmostWindowAt(event->pos());
  if (!m_focusedWindow) {
    QQuickItem::mouseDoubleClickEvent(event);
    return;
  }

  const int captionH  = m_focusedWindow->property("captionHeight").toInt();
  const int externcW  = m_focusedWindow->property("externControlWidth").toInt();
  const int buttonsW  = m_focusedWindow->property("windowControlsWidth").toInt();
  const auto localPos = m_focusedWindow->mapFromItem(this, event->pos());
  if (localPos.y() <= captionH && localPos.x() <= m_focusedWindow->width() - buttonsW
      && localPos.x() > externcW) {
    const QString state = m_focusedWindow->property("state").toString();

    if (state == "maximized")
      QMetaObject::invokeMethod(m_focusedWindow, "restoreClicked");

    else if (state == "normal")
      QMetaObject::invokeMethod(m_focusedWindow, "maximizeClicked");

    event->accept();
    return;
  }

  QQuickItem::mouseDoubleClickEvent(event);
}