Method restoreLayout

app/src/UI/WindowManager.cpp:747–790

* @brief Restores a previously serialized window layout. */

 * @brief Restores a previously serialized window layout.
 */
bool UI::WindowManager::restoreLayout(const QJsonObject& layout)
{
  if (layout.isEmpty())
    return false;

  bool autoLayout        = layout["autoLayout"].toBool(true);
  const int savedCanvasW = layout["canvasWidth"].toInt(0);
  const int savedCanvasH = layout["canvasHeight"].toInt(0);
  m_userReordered        = layout["userReordered"].toBool(false);

  const QHash<StableKey, int> stableLookup = buildStableKeyToWindowId();

  if (layout.contains("windowOrderTyped") || layout.contains("windowOrder"))
    m_windowOrder = resolveSavedOrder(layout, stableLookup);

  m_manualGeometries.clear();
  m_manualMargins.clear();
  m_pendingGeometries.clear();
  if (!autoLayout && layout.contains("geometries")) {
    const int canvasW       = static_cast<int>(width());
    const int canvasH       = static_cast<int>(height());
    const int marginCanvasW = savedCanvasW > 0 ? savedCanvasW : canvasW;
    const int marginCanvasH = savedCanvasH > 0 ? savedCanvasH : canvasH;
    m_manualCanvasWidth     = marginCanvasW;
    m_manualCanvasHeight    = marginCanvasH;

    applySavedGeometries(layout, stableLookup, marginCanvasW, marginCanvasH);

    constrainWindows();
    Q_EMIT geometryChanged(nullptr);
  }

  if (m_autoLayoutEnabled != autoLayout) {
    m_autoLayoutEnabled = autoLayout;
    Q_EMIT autoLayoutEnabledChanged();
  }

  if (autoLayout)
    loadLayout();
  else
    m_layoutRestored = true;

  return true;
}

/**
 * @brief Pre-stashes saved geometries so registerWindow can apply them per-window before first