Method eventFilter

pj_plotting/widget/src/DockWidget.cpp:299–338

}

bool DockWidget::eventFilter(QObject* watched, QEvent* event) {
  if (object_widget_ != nullptr && content_widget_ != nullptr && isContentWidgetOrChild(watched, content_widget_) &&
      event != nullptr) {
    switch (event->type()) {
      case QEvent::ContextMenu: {
        auto* context_event = static_cast<QContextMenuEvent*>(event);
        showObjectContextMenu(context_event->globalPos());
        event->accept();
        return true;
      }
      // Catalog drops on the *live* content widget — once the placeholder
      // is gone, this filter is the only thing that hears the drop. Used by
      // multi-topic widgets (Scene3D) to absorb additional topics; a topic the
      // committed widget can't host is rejected by onCatalogItemsDropped (no
      // family-switching replacement — that only happens from the placeholder).
      case QEvent::DragEnter:
      case QEvent::DragMove: {
        auto* drag = static_cast<QDropEvent*>(event);
        if (drag->mimeData() != nullptr && drag->mimeData()->hasFormat(CurveTreeView::catalogItemsMimeType())) {
          drag->acceptProposedAction();
          return true;
        }
        return false;
      }
      case QEvent::Drop: {
        auto* drop = static_cast<QDropEvent*>(event);
        const QStringList keys = CurveTreeView::decodeCatalogKeys(drop->mimeData());
        if (keys.isEmpty()) {
          return false;
        }
        drop->acceptProposedAction();
        onCatalogItemsDropped(keys);
        return true;
      }
      default:
        break;
    }
  }
  return ads::CDockWidget::eventFilter(watched, event);
}

DockWidget* DockWidget::splitHorizontal() {
  return splitHorizontal(nullptr);