C++ DocumentObject::isDerivedFrom方法代码示例

Part::Feature* Transformed::getBaseObject(bool silent) const {
    Part::Feature *rv = Feature::getBaseObject(/* silent = */ true);
    if (rv) {
        return rv;
    }

    const char* err = nullptr;
    const std::vector<App::DocumentObject*> & originals = Originals.getValues();
    // NOTE: may be here supposed to be last origin but in order to keep the old behaviour keep here first 
    App::DocumentObject* firstOriginal = originals.empty() ? NULL : originals.front();
    if (firstOriginal) {
        if(firstOriginal->isDerivedFrom(Part::Feature::getClassTypeId())) {
            rv = static_cast<Part::Feature*>(firstOriginal);
        } else {
            err = "Transformation feature Linked object is not a Part object";
        }
    } else {
        err = "No originals linked to the transformed feature.";
    }

    if (!silent && err) {
        throw Base::Exception(err);
    }

    return rv;
}

const bool TaskTransformedParameters::originalSelected(const Gui::SelectionChanges& msg)
{
    if (msg.Type == Gui::SelectionChanges::AddSelection && (
                (selectionMode == addFeature) || (selectionMode == removeFeature))) {

        if (strcmp(msg.pDocName, getObject()->getDocument()->getName()) != 0)
            return false;

        PartDesign::Transformed* pcTransformed = getObject();
        App::DocumentObject* selectedObject = pcTransformed->getDocument()->getObject(msg.pObjectName);
        if (selectedObject->isDerivedFrom(PartDesign::FeatureAddSub::getClassTypeId())) {

            // Do the same like in TaskDlgTransformedParameters::accept() but without doCommand
            std::vector<App::DocumentObject*> originals = pcTransformed->Originals.getValues();
            std::vector<App::DocumentObject*>::iterator o = std::find(originals.begin(), originals.end(), selectedObject);
            if (selectionMode == addFeature) {
                if (o == originals.end())
                    originals.push_back(selectedObject);
                else
                    return false; // duplicate selection
            } else {
                if (o != originals.end())
                    originals.erase(o);
                else
                    return false;
            }
            pcTransformed->Originals.setValues(originals);
            recomputeFeature();

            return true;
        }
    }

    return false;
}

void MDIViewPage::updateTemplate(bool forceUpdate)
{
    App::DocumentObject *templObj = m_vpPage->getDrawPage()->Template.getValue();
    // TODO: what if template has been deleted? templObj will be NULL. segfault?
    if (!templObj) {
        Base::Console().Log("INFO - MDIViewPage::updateTemplate - Page: %s has NO template!!\n",m_vpPage->getDrawPage()->getNameInDocument());
        return;
    }

    if(m_vpPage->getDrawPage()->Template.isTouched() || templObj->isTouched()) {
        // Template is touched so update

        if(forceUpdate ||
           (templObj && templObj->isTouched() && templObj->isDerivedFrom(TechDraw::DrawTemplate::getClassTypeId())) ) {

            QGITemplate *qItemTemplate = m_view->getTemplate();

            if(qItemTemplate) {
                TechDraw::DrawTemplate *pageTemplate = dynamic_cast<TechDraw::DrawTemplate *>(templObj);
                qItemTemplate->setTemplate(pageTemplate);
                qItemTemplate->updateView();
            }
        }
    }
}

void Body::removeFeature(App::DocumentObject* feature)
{
    App::DocumentObject* nextSolidFeature = getNextSolidFeature(feature);
    App::DocumentObject* prevSolidFeature = getPrevSolidFeature(feature);
    // This method must be called BEFORE the feature is removed from the Document!
    if (isSolidFeature(feature)) {
        // This is a solid feature
        // If the next feature is solid, reroute its BaseFeature property to the previous solid feature
        if (nextSolidFeature) {
            assert ( nextSolidFeature->isDerivedFrom ( PartDesign::Feature::getClassTypeId () ) );
            // Note: It's ok to remove the first solid feature, that just mean the next feature become the base one
            static_cast<PartDesign::Feature*>(nextSolidFeature)->BaseFeature.setValue(prevSolidFeature);
        }
    }

    std::vector<App::DocumentObject*> model = Model.getValues();
    std::vector<App::DocumentObject*>::iterator it = std::find(model.begin(), model.end(), feature);

    // Adjust Tip feature if it is pointing to the deleted object
    if (Tip.getValue()== feature) {
        if (prevSolidFeature) {
            Tip.setValue(prevSolidFeature);
        } else {
            Tip.setValue(nextSolidFeature);
        }
    }

    // Erase feature from Model
    model.erase(it);
    Model.setValues(model);
}

bool ViewProviderDragger::setEdit(int ModNum)
{
  Q_UNUSED(ModNum);

  App::DocumentObject *genericObject = this->getObject();
  if (genericObject->isDerivedFrom(App::GeoFeature::getClassTypeId()))
  {
    App::GeoFeature *geoFeature = static_cast<App::GeoFeature *>(genericObject);
    const Base::Placement &placement = geoFeature->Placement.getValue();
    SoTransform *tempTransform = new SoTransform();
    tempTransform->ref();
    updateTransform(placement, tempTransform);
    
    assert(!csysDragger);
    csysDragger = new SoFCCSysDragger();
    csysDragger->draggerSize.setValue(0.05f);
    csysDragger->translation.setValue(tempTransform->translation.getValue());
    csysDragger->rotation.setValue(tempTransform->rotation.getValue());
    
    tempTransform->unref();
    
    pcTransform->translation.connectFrom(&csysDragger->translation);
    pcTransform->rotation.connectFrom(&csysDragger->rotation);
    
    csysDragger->addStartCallback(dragStartCallback, this);
    csysDragger->addFinishCallback(dragFinishCallback, this);
    
    pcRoot->insertChild(csysDragger, 0);
    
    TaskCSysDragger *task = new TaskCSysDragger(this, csysDragger);
    Gui::Control().showDialog(task);
  }
  
  return true;
}

void MDIViewPage::onDeleteObject(const App::DocumentObject& obj)
{
    //if this page has a QView for this obj, delete it.
    if (obj.isDerivedFrom(TechDraw::DrawView::getClassTypeId())) {
        (void) m_view->removeQViewByName(obj.getNameInDocument());
    }
}

void ViewProviderBody::slotChangedObjectApp ( const App::DocumentObject& obj, const App::Property& prop ) {
    
    if (!obj.isDerivedFrom ( Part::Feature::getClassTypeId () ) ||
        obj.isDerivedFrom ( Part::BodyBase::getClassTypeId () )    ) { // we are intrested only in Part::Features and not in bodies
        return;
    }

    const Part::Feature *feat = static_cast <const Part::Feature *>(&obj);

    if ( &feat->Shape != &prop && &feat->Placement != &prop) { // react only on changes in shapes and placement
        return;
    }

    PartDesign::Body *body = static_cast<PartDesign::Body*> ( getObject() );
    if ( body && body->hasFeature (&obj ) ) {
        updateOriginDatumSize ();
    }
}

void Body::insertFeature(App::DocumentObject* feature, App::DocumentObject* target, bool after)
{
    if (target) {
        if (target == BaseFeature.getValue()) {
            // Handle the insertion relative to the base feature in a special way
            if (after) {
                target = nullptr;
            } else {
                throw Base::Exception("Body: impossible to insert before the base object");
            }
        } else if (!hasFeature (target)) {
            // Check if the target feature belongs to the body
            throw Base::Exception("Body: the feature we should insert relative to is not part of that body");
        }
    }

    std::vector<App::DocumentObject*> model = Model.getValues();
    std::vector<App::DocumentObject*>::iterator insertInto;

    // Find out the position there to insert the feature
    if (!target) {
        if (after) {
            insertInto = model.begin();
        } else {
            insertInto = model.end();
        }
    } else {
        std::vector<App::DocumentObject*>::iterator targetIt = std::find (model.begin(), model.end(), target);
        assert (targetIt != model.end());
        if (after) {
            insertInto = targetIt + 1;
        } else {
            insertInto = targetIt;
        }
    }

    // Insert the new feature after the given
    model.insert (insertInto, feature);

    Model.setValues (model);

    // Set the BaseFeature property
    if (Body::isSolidFeature(feature)) {
        // Set BaseFeature property to previous feature (this might be the Tip feature)
        App::DocumentObject* prevSolidFeature = getPrevSolidFeature(feature);
        // NULL is ok here, it just means we made the current one fiature the base solid
        static_cast<PartDesign::Feature*>(feature)->BaseFeature.setValue(prevSolidFeature);

        // Reroute the next solid feature's BaseFeature property to this feature
        App::DocumentObject* nextSolidFeature = getNextSolidFeature(feature);
        if (nextSolidFeature) {
            assert ( nextSolidFeature->isDerivedFrom ( PartDesign::Feature::getClassTypeId () ) );
            static_cast<PartDesign::Feature*>(nextSolidFeature)->BaseFeature.setValue(feature);
        }
    }

}

void CmdPartDesignMoveTip::activated(int iMsg)
{
    Q_UNUSED(iMsg);
    std::vector<App::DocumentObject*> features = getSelection().getObjectsOfType(
            Part::Feature::getClassTypeId() );
    App::DocumentObject* selFeature;
    PartDesign::Body* body= nullptr;

    if ( features.size() == 1 ) {
        selFeature = features.front();
        if ( selFeature->getTypeId().isDerivedFrom ( PartDesign::Body::getClassTypeId() ) ) {
            body = static_cast<PartDesign::Body *> ( selFeature );
        } else {
            body = PartDesignGui::getBodyFor ( selFeature, /* messageIfNot =*/ false );
        }
    } else {
        selFeature = nullptr;
    }

    if (!selFeature) {
        QMessageBox::warning (0, QObject::tr( "Selection error" ),
                QObject::tr( "Select exactly one PartDesign feature or a body." ) );
        return;
    } else if (!body) {
        QMessageBox::warning (0, QObject::tr( "Selection error" ),
                QObject::tr( "Couldn't determine a body for the selected feature '%s'.", selFeature->Label.getValue() ) );
        return;
    } else if ( !selFeature->isDerivedFrom(PartDesign::Feature::getClassTypeId () ) &&
            selFeature != body && body->BaseFeature.getValue() != selFeature ) {
        QMessageBox::warning (0, QObject::tr( "Selection error" ),
                QObject::tr( "Only a solid feature can be the tip of a body." ) );
        return;
    }

    App::DocumentObject* oldTip = body->Tip.getValue();
    if (oldTip == selFeature) { // it's not generally an error, so print only a console message
        Base::Console().Message ("%s is already the tip of the body", selFeature->getNameInDocument () );
        return;
    }

    openCommand("Move tip to selected feature");

    if (selFeature == body) {
        doCommand(Doc,"App.activeDocument().%s.Tip = None", body->getNameInDocument());
    } else {
        doCommand(Doc,"App.activeDocument().%s.Tip = App.activeDocument().%s",body->getNameInDocument(),
                selFeature->getNameInDocument());

        // Adjust visibility to show only the Tip feature
        doCommand(Gui,"Gui.activeDocument().show(\"%s\")", selFeature->getNameInDocument());
    }

    // TOOD: Hide all datum features after the Tip feature? But the user might have already hidden some and wants to see
    // others, so we would have to remember their state somehow
    updateActive();
}

double DrawPage::getPageWidth() const
{
    App::DocumentObject *obj = 0;
    obj = Template.getValue();

    if( obj && obj->isDerivedFrom(TechDraw::DrawTemplate::getClassTypeId()) ) {
        TechDraw::DrawTemplate *templ = static_cast<TechDraw::DrawTemplate *>(obj);
        return templ->getWidth();
    }

    throw Base::Exception("Template not set for Page");
}

void OriginGroup::setupObject () {
    App::Document *doc = getDocument ();

    std::string objName = std::string ( getNameInDocument()).append ( "Origin" );

    App::DocumentObject *originObj = doc->addObject ( "App::Origin", objName.c_str () );

    assert ( originObj && originObj->isDerivedFrom ( App::Origin::getClassTypeId () ) );
    Origin.setValue (originObj);

    GeoFeatureGroup::setupObject ();
}

void Body::onChanged (const App::Property* prop) {
    if ( prop == &BaseFeature ) {
        App::DocumentObject *baseFeature = BaseFeature.getValue();
        App::DocumentObject *nextSolid = getNextSolidFeature ( baseFeature );
        if ( nextSolid ) {
            assert ( nextSolid->isDerivedFrom ( PartDesign::Feature::getClassTypeId () ) );
            static_cast<PartDesign::Feature*>(nextSolid)->BaseFeature.setValue( baseFeature );
        }
    }

    Part::BodyBase::onChanged ( prop );
}

void Body::setupObject () {
    // NOTE: the code shared with App::OriginGroup
    App::Document *doc = getDocument ();

    std::string objName = std::string ( getNameInDocument() ).append ( "Origin" );

    App::DocumentObject *originObj = doc->addObject ( "App::Origin", objName.c_str () );

    assert ( originObj && originObj->isDerivedFrom ( App::Origin::getClassTypeId () ) );
    Origin.setValue ( originObj );

    Part::BodyBase::setupObject ();
}

std::vector<App::DocumentObject*> ViewProviderPage::claimChildren(void) const
{
    std::vector<App::DocumentObject*> temp;

    // Attach the template if it exists
    App::DocumentObject *templateFeat = 0;
    templateFeat = getPageObject()->Template.getValue();

    if(templateFeat) {
        temp.push_back(templateFeat);
    }

    // Collect any child views
    // for Page, valid children are any View except: DrawProjGroupItem
    //                                               DrawViewDimension
    //                                               any FeatuerView in a DrawViewClip
    //                                               DrawHatch

    const std::vector<App::DocumentObject *> &views = getPageObject()->Views.getValues();

    try {
      for(std::vector<App::DocumentObject *>::const_iterator it = views.begin(); it != views.end(); ++it) {
          TechDraw::DrawView* featView = dynamic_cast<TechDraw::DrawView*> (*it);
          App::DocumentObject *docObj = *it;
          // Don't collect if dimension, projection group item, hatch or member of ClipGroup as these should be grouped elsewhere
          if(docObj->isDerivedFrom(TechDraw::DrawProjGroupItem::getClassTypeId())    ||
             docObj->isDerivedFrom(TechDraw::DrawViewDimension::getClassTypeId())    ||
             docObj->isDerivedFrom(TechDraw::DrawHatch::getClassTypeId())            ||
             (featView && featView->isInClip()) )
              continue;
          else
              temp.push_back(*it);
      }
      return temp;
    } catch (...) {
        std::vector<App::DocumentObject*> tmp;
        return tmp;
    }
}

const char * DrawPage::getPageOrientation() const
{
    App::DocumentObject *obj;
    obj = Template.getValue();

    if(obj) {
        if(obj->isDerivedFrom(TechDraw::DrawTemplate::getClassTypeId())) {
          TechDraw::DrawTemplate *templ = static_cast<TechDraw::DrawTemplate *>(obj);

          return templ->Orientation.getValueAsString();
        }
    }
    throw Base::Exception("Template not set for Page");
}