Method frameTopInset

app/src/Platform/NativeWindow_CSD.cpp:163–176

* @brief Returns the total top inset (shadow + CSD titlebar) reserved above the content area. */

 * @brief Returns the total top inset (shadow + CSD titlebar) reserved above the content area.
 */
int NativeWindow::frameTopInset(QObject* window)
{
  auto* w = qobject_cast<QWindow*>(window);
  if (!w)
    return 0;

  if (isWindows11() || !m_csdEnabled)
    return 0;

  if (auto* decorator = s_decorators.value(w, nullptr))
    return decorator->shadowMargin() + decorator->titleBarHeight();

  return (m_csdShadowEnabled ? CSD::ShadowRadius : 0) + CSD::TitleBarHeight;
}

/**
 * @brief Removes a window from the management list.