src/PartSet/PartSet_SketcherMgr.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        PartSet_SketcherMgr.cpp
   4 // Created:     19 Dec 2014
   5 // Author:      Vitaly SMETANNIKOV
   6
   7 #include "PartSet_SketcherMgr.h"
   8 #include "PartSet_Module.h"
   9 #include "PartSet_WidgetPoint2D.h"
  10 #include "PartSet_Tools.h"
  11
  12 #include <XGUI_ModuleConnector.h>
  13 #include <XGUI_Displayer.h>
  14 #include <XGUI_Workshop.h>
  15 #include <XGUI_Selection.h>
  16 #include <XGUI_SelectionMgr.h>
  17
  18 #include <ModuleBase_IViewer.h>
  19 #include <ModuleBase_IWorkshop.h>
  20 #include <ModuleBase_IViewWindow.h>
  21 #include <ModuleBase_Operation.h>
  22 #include <ModuleBase_ISelection.h>
  23 #include <ModuleBase_IPropertyPanel.h>
  24 #include <ModuleBase_Operation.h>
  25
  26 #include <Events_Loop.h>
  27
  28 #include <SketchPlugin_Line.h>
  29 #include <SketchPlugin_Sketch.h>
  30 #include <SketchPlugin_Point.h>
  31 #include <SketchPlugin_Arc.h>
  32 #include <SketchPlugin_Circle.h>
  33 #include <SketchPlugin_ConstraintLength.h>
  34 #include <SketchPlugin_ConstraintDistance.h>
  35 #include <SketchPlugin_ConstraintParallel.h>
  36 #include <SketchPlugin_ConstraintPerpendicular.h>
  37 #include <SketchPlugin_ConstraintRadius.h>
  38 #include <SketchPlugin_ConstraintRigid.h>
  39
  40 #include <SelectMgr_IndexedMapOfOwner.hxx>
  41 #include <StdSelect_BRepOwner.hxx>
  42
  43 #include <ModelAPI_Events.h>
  44
  45 #include <QMouseEvent>
  46 #include <QApplication>
  47
  48
  49
  50
  51 /// Returns list of unique objects by sum of objects from List1 and List2
  52 QList<ObjectPtr> getSumList(const QList<ModuleBase_ViewerPrs>& theList1,
  53                                        const QList<ModuleBase_ViewerPrs>& theList2)
  54 {
  55   QList<ObjectPtr> aRes;
  56   foreach (ModuleBase_ViewerPrs aPrs, theList1) {
  57     if (!aRes.contains(aPrs.object()))
  58       aRes.append(aPrs.object());
  59   }
  60   foreach (ModuleBase_ViewerPrs aPrs, theList2) {
  61     if (!aRes.contains(aPrs.object()))
  62       aRes.append(aPrs.object());
  63   }
  64   return aRes;
  65 }
  66
  67
  68
  69
  70 PartSet_SketcherMgr::PartSet_SketcherMgr(PartSet_Module* theModule)
  71   : QObject(theModule), myModule(theModule), myIsDragging(false), myDragDone(false)
  72 {
  73   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
  74   ModuleBase_IViewer* aViewer = aWorkshop->viewer();
  75
  76   connect(aViewer, SIGNAL(mousePress(ModuleBase_IViewWindow*, QMouseEvent*)),
  77           this, SLOT(onMousePressed(ModuleBase_IViewWindow*, QMouseEvent*)));
  78
  79   connect(aViewer, SIGNAL(mouseRelease(ModuleBase_IViewWindow*, QMouseEvent*)),
  80           this, SLOT(onMouseReleased(ModuleBase_IViewWindow*, QMouseEvent*)));
  81
  82   connect(aViewer, SIGNAL(mouseMove(ModuleBase_IViewWindow*, QMouseEvent*)),
  83           this, SLOT(onMouseMoved(ModuleBase_IViewWindow*, QMouseEvent*)));
  84
  85   connect(aViewer, SIGNAL(mouseDoubleClick(ModuleBase_IViewWindow*, QMouseEvent*)),
  86           this, SLOT(onMouseDoubleClick(ModuleBase_IViewWindow*, QMouseEvent*)));
  87 }
  88
  89 PartSet_SketcherMgr::~PartSet_SketcherMgr()
  90 {
  91   if (!myPlaneFilter.IsNull())
  92     myPlaneFilter.Nullify();
  93 }
  94
  95 void PartSet_SketcherMgr::onMousePressed(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
  96 {
  97   //
  98   if (!(theEvent->buttons() & Qt::LeftButton))
  99     return;
 100
 101   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
 102   ModuleBase_Operation* aOperation = aWorkshop->currentOperation();
 103   // Use only for sketch operations
 104   if (aOperation && myCurrentSketch) {
 105     if (!PartSet_Tools::sketchPlane(myCurrentSketch))
 106       return;
 107
 108     bool isSketcher = (aOperation->id().toStdString() == SketchPlugin_Sketch::ID());
 109     bool isSketchOpe = sketchOperationIdList().contains(aOperation->id());
 110
 111     // Avoid non-sketch operations
 112     if ((!isSketchOpe) && (!isSketcher))
 113       return;
 114
 115     bool isEditing = aOperation->isEditOperation();
 116
 117     // Ignore creation sketch operation
 118     if ((!isSketcher) && (!isEditing))
 119       return;
 120
 121     if (theEvent->modifiers()) {
 122       // If user performs multiselection
 123       if (isSketchOpe /* && (!isSketcher)*/)
 124         if (!aOperation->commit())
 125           aOperation->abort();
 126       return;
 127     }
 128
 129     // MoveTo in order to highlight current object
 130     ModuleBase_IViewer* aViewer = aWorkshop->viewer();
 131     aViewer->AISContext()->MoveTo(theEvent->x(), theEvent->y(), theWnd->v3dView());
 132
 133     // Remember highlighted objects for editing
 134     ModuleBase_ISelection* aSelect = aWorkshop->selection();
 135     QList<ModuleBase_ViewerPrs> aHighlighted = aSelect->getHighlighted();
 136     QList<ModuleBase_ViewerPrs> aSelected = aSelect->getSelected();
 137     myEditingFeatures.clear();
 138     myEditingAttr.clear();
 139
 140     bool aHasShift = (theEvent->modifiers() & Qt::ShiftModifier);
 141     QObjectPtrList aSelObjects;
 142     if (aHasShift)
 143       aSelObjects = getSumList(aHighlighted, aSelected);
 144     else {
 145       foreach (ModuleBase_ViewerPrs aPrs, aHighlighted) {
 146         aSelObjects.append(aPrs.object());
 147       }
 148     }
 149     if ((aSelObjects.size() == 0)) {
 150       if (isSketchOpe && (!isSketcher))
 151         // commit previous operation
 152         if (!aOperation->commit())
 153           aOperation->abort();
 154       return;
 155     }
 156     if (aSelObjects.size() == 1) {
 157       // Move by selected shape (vertex). Can be used only for single selection
 158       foreach(ModuleBase_ViewerPrs aPrs, aHighlighted) {
 159         FeaturePtr aFeature = ModelAPI_Feature::feature(aHighlighted.first().object());
 160         if (aFeature) {
 161           myEditingFeatures.append(aFeature);
 162           TopoDS_Shape aShape = aPrs.shape();
 163           if (!aShape.IsNull()) {
 164             if (aShape.ShapeType() == TopAbs_VERTEX) {
 165               AttributePtr aAttr = PartSet_Tools::findAttributeBy2dPoint(myEditingFeatures.first(),
 166                                                                          aShape, myCurrentSketch);
 167               if (aAttr)
 168                 myEditingAttr.append(aAttr);
 169             }
 170           }
 171         }
 172       }
 173     } else {
 174       // Provide multi-selection. Can be used only for features
 175       foreach (ObjectPtr aObj, aSelObjects) {
 176         FeaturePtr aFeature = ModelAPI_Feature::feature(aObj);
 177         if (aFeature && (!myEditingFeatures.contains(aFeature)))
 178           myEditingFeatures.append(aFeature);
 179       }
 180
 181     }
 182     // If nothing highlighted - return
 183     if (myEditingFeatures.size() == 0)
 184       return;
 185
 186     if (isSketcher) {
 187       myIsDragging = true;
 188       get2dPoint(theWnd, theEvent, myCurX, myCurY);
 189       myDragDone = false;
 190       aWorkshop->viewer()->enableMultiselection(false);
 191       launchEditing();
 192
 193     } else if (isSketchOpe && isEditing) {
 194       // If selected another object commit current result
 195       aOperation->commit();
 196
 197       myIsDragging = true;
 198       get2dPoint(theWnd, theEvent, myCurX, myCurY);
 199       myDragDone = false;
 200       aWorkshop->viewer()->enableMultiselection(false);
 201
 202       // This is necessary in order to finalize previous operation
 203       QApplication::processEvents();
 204       launchEditing();
 205     }
 206   }
 207 }
 208
 209 void PartSet_SketcherMgr::onMouseReleased(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
 210 {
 211   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
 212   ModuleBase_Operation* aOp = aWorkshop->currentOperation();
 213   if (!aOp)
 214     return;
 215   if (!sketchOperationIdList().contains(aOp->id()))
 216     return;
 217
 218   // Only for sketcher operations
 219   ModuleBase_IViewer* aViewer = aWorkshop->viewer();
 220   if (myIsDragging) {
 221     myIsDragging = false;
 222     if (myDragDone) {
 223       aViewer->enableMultiselection(true);
 224       //aOp->commit();
 225       myEditingFeatures.clear();
 226       myEditingAttr.clear();
 227
 228       // Reselect edited object
 229       aViewer->AISContext()->MoveTo(theEvent->x(), theEvent->y(), theWnd->v3dView());
 230       if (theEvent->modifiers() & Qt::ShiftModifier)
 231         aViewer->AISContext()->ShiftSelect();
 232       else
 233         aViewer->AISContext()->Select();
 234       return;
 235     }
 236   }
 237   if (!aViewer->isMultiSelectionEnabled()) {
 238     aViewer->enableMultiselection(true);
 239   }
 240 }
 241
 242 void PartSet_SketcherMgr::onMouseMoved(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
 243 {
 244   if (myIsDragging) {
 245     ModuleBase_Operation* aOperation = myModule->workshop()->currentOperation();
 246     if (aOperation->id().toStdString() == SketchPlugin_Sketch::ID())
 247       return; // No edit operation activated
 248
 249     static Events_ID anEvent = Events_Loop::eventByName(EVENT_OBJECT_MOVED);
 250
 251     Handle(V3d_View) aView = theWnd->v3dView();
 252     gp_Pnt aPoint = PartSet_Tools::convertClickToPoint(theEvent->pos(), aView);
 253     double aX, aY;
 254     PartSet_Tools::convertTo2D(aPoint, myCurrentSketch, aView, aX, aY);
 255     double dX =  aX - myCurX;
 256     double dY =  aY - myCurY;
 257
 258     if ((myEditingAttr.size() == 1) && myEditingAttr.first()) {
 259       // probably we have prehighlighted point
 260       AttributePtr aAttr = myEditingAttr.first();
 261       std::string aAttrId = aAttr->id();
 262       ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
 263       QList<ModuleBase_ModelWidget*> aWidgets = aPanel->modelWidgets();
 264       // Find corresponded widget to provide dragging
 265       foreach (ModuleBase_ModelWidget* aWgt, aWidgets) {
 266         if (aWgt->attributeID() == aAttrId) {
 267           PartSet_WidgetPoint2D* aWgt2d = dynamic_cast<PartSet_WidgetPoint2D*>(aWgt);
 268           if (aWgt2d) {
 269             aWgt2d->setPoint(aWgt2d->x() + dX, aWgt2d->y() + dY);
 270             break;
 271           }
 272         }
 273       }
 274     } else {
 275       ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
 276       XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(aWorkshop);
 277       XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 278       bool isEnableUpdateViewer = aDisplayer->enableUpdateViewer(false);
 279
 280       foreach(FeaturePtr aFeature, myEditingFeatures) {
 281         std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 282           std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
 283         if (aSketchFeature) {
 284           // save the previous selection
 285
 286           std::list<AttributePtr> aSelectedAttributes;
 287           getCurrentSelection(aSketchFeature, myCurrentSketch, aWorkshop, aSelectedAttributes);
 288           // save the previous selection: end
 289
 290           aSketchFeature->move(dX, dY);
 291           // TODO: the selection restore should be after the AIS presentation is rebuilt
 292           Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_MOVED));
 293           Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
 294
 295           // restore the previous selection
 296           SelectMgr_IndexedMapOfOwner anOwnersToSelect;
 297           getSelectionOwners(aSketchFeature, myCurrentSketch, aWorkshop, aSelectedAttributes,
 298                              anOwnersToSelect);
 299           aConnector->workshop()->selector()->setSelectedOwners(anOwnersToSelect, false);
 300           // restore the previous selection
 301         }
 302         ModelAPI_EventCreator::get()->sendUpdated(aSketchFeature, anEvent, true);
 303         Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
 304       }
 305       // TODO: set here
 306       //Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_MOVED));
 307       //Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
 308
 309       //Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
 310       aDisplayer->enableUpdateViewer(isEnableUpdateViewer);
 311       aDisplayer->updateViewer();
 312     }
 313     myDragDone = true;
 314     myCurX = aX;
 315     myCurY = aY;
 316   }
 317 }
 318
 319 void PartSet_SketcherMgr::onMouseDoubleClick(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
 320 {
 321   ModuleBase_Operation* aOperation = myModule->workshop()->currentOperation();
 322   if (aOperation && aOperation->isEditOperation()) {
 323     std::string aId = aOperation->id().toStdString();
 324     if ((aId == SketchPlugin_ConstraintLength::ID()) ||
 325       (aId == SketchPlugin_ConstraintDistance::ID()) ||
 326       (aId == SketchPlugin_ConstraintRadius::ID()))
 327     {
 328       // Activate dimension value editing on double click
 329       ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
 330       QList<ModuleBase_ModelWidget*> aWidgets = aPanel->modelWidgets();
 331       // Find corresponded widget to activate value editing
 332       foreach (ModuleBase_ModelWidget* aWgt, aWidgets) {
 333         if (aWgt->attributeID() == "ConstraintValue") {
 334           aWgt->focusTo();
 335           return;
 336         }
 337       }
 338     }
 339   }
 340 }
 341
 342 void PartSet_SketcherMgr::get2dPoint(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent,
 343                                 double& theX, double& theY)
 344 {
 345   Handle(V3d_View) aView = theWnd->v3dView();
 346   gp_Pnt aPoint = PartSet_Tools::convertClickToPoint(theEvent->pos(), aView);
 347   PartSet_Tools::convertTo2D(aPoint, myCurrentSketch, aView, theX, theY);
 348 }
 349
 350 void PartSet_SketcherMgr::launchEditing()
 351 {
 352   if (myEditingFeatures.size() > 0) {
 353     FeaturePtr aFeature = myEditingFeatures.first();
 354     std::shared_ptr<SketchPlugin_Feature> aSPFeature =
 355               std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
 356     if (aSPFeature) {
 357       myModule->editFeature(aSPFeature);
 358     }
 359   }
 360 }
 361
 362
 363 QStringList PartSet_SketcherMgr::sketchOperationIdList()
 364 {
 365   static QStringList aIds;
 366   if (aIds.size() == 0) {
 367     aIds << SketchPlugin_Line::ID().c_str();
 368     aIds << SketchPlugin_Point::ID().c_str();
 369     aIds << SketchPlugin_Arc::ID().c_str();
 370     aIds << SketchPlugin_Circle::ID().c_str();
 371     aIds << SketchPlugin_ConstraintLength::ID().c_str();
 372     aIds << SketchPlugin_ConstraintDistance::ID().c_str();
 373     aIds << SketchPlugin_ConstraintRigid::ID().c_str();
 374     aIds << SketchPlugin_ConstraintRadius::ID().c_str();
 375     aIds << SketchPlugin_ConstraintPerpendicular::ID().c_str();
 376     aIds << SketchPlugin_ConstraintParallel::ID().c_str();
 377   }
 378   return aIds;
 379 }
 380
 381 void PartSet_SketcherMgr::startSketch(ModuleBase_Operation* theOperation)
 382 {
 383   // Display all sketcher sub-Objects
 384   myCurrentSketch = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theOperation->feature());
 385   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myModule->workshop());
 386   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 387
 388   // Hide sketcher result
 389   std::list<ResultPtr> aResults = myCurrentSketch->results();
 390   std::list<ResultPtr>::const_iterator aIt;
 391   for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 392     aDisplayer->erase((*aIt), false);
 393   }
 394   aDisplayer->erase(myCurrentSketch, false);
 395
 396   // Display sketcher objects
 397   for (int i = 0; i < myCurrentSketch->numberOfSubs(); i++) {
 398     FeaturePtr aFeature = myCurrentSketch->subFeature(i);
 399     std::list<ResultPtr> aResults = aFeature->results();
 400     std::list<ResultPtr>::const_iterator aIt;
 401     for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 402       aDisplayer->display((*aIt), false);
 403     }
 404     aDisplayer->display(aFeature, false);
 405   }
 406
 407   if (myPlaneFilter.IsNull())
 408     myPlaneFilter = new ModuleBase_ShapeInPlaneFilter();
 409
 410   myModule->workshop()->viewer()->addSelectionFilter(myPlaneFilter);
 411   if (theOperation->isEditOperation()) {
 412     // If it is editing of sketch then it means that plane is already defined
 413     std::shared_ptr<GeomAPI_Pln> aPln = PartSet_Tools::sketchPlane(myCurrentSketch);
 414     myPlaneFilter->setPlane(aPln->impl<gp_Pln>());
 415   }
 416   aDisplayer->updateViewer();
 417 }
 418
 419 void PartSet_SketcherMgr::stopSketch(ModuleBase_Operation* theOperation)
 420 {
 421   DataPtr aData = myCurrentSketch->data();
 422   if ((!aData) || (!aData->isValid())) {
 423     // The sketch was aborted
 424     myCurrentSketch = CompositeFeaturePtr();
 425     myModule->workshop()->viewer()->removeSelectionFilter(myPlaneFilter);
 426     return;
 427   }
 428   // Hide all sketcher sub-Objects
 429   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myModule->workshop());
 430   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 431   for (int i = 0; i < myCurrentSketch->numberOfSubs(); i++) {
 432     FeaturePtr aFeature = myCurrentSketch->subFeature(i);
 433     std::list<ResultPtr> aResults = aFeature->results();
 434     std::list<ResultPtr>::const_iterator aIt;
 435     for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 436       aDisplayer->erase((*aIt), false);
 437     }
 438     aDisplayer->erase(aFeature, false);
 439   }
 440   // Display sketcher result
 441   std::list<ResultPtr> aResults = myCurrentSketch->results();
 442   std::list<ResultPtr>::const_iterator aIt;
 443   for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 444     aDisplayer->display((*aIt), false);
 445   }
 446   aDisplayer->display(myCurrentSketch);
 447
 448   myCurrentSketch = CompositeFeaturePtr();
 449   myModule->workshop()->viewer()->removeSelectionFilter(myPlaneFilter);
 450   aDisplayer->updateViewer();
 451 }
 452
 453
 454 void PartSet_SketcherMgr::onPlaneSelected(const std::shared_ptr<GeomAPI_Pln>& thePln)
 455 {
 456   myPlaneFilter->setPlane(thePln->impl<gp_Pln>());
 457 }
 458
 459 void PartSet_SketcherMgr::getCurrentSelection(const ObjectPtr& theObject,
 460                                               const FeaturePtr& theSketch,
 461                                               ModuleBase_IWorkshop* theWorkshop,
 462                                               std::list<AttributePtr>& theSelectedAttributes)
 463 {
 464   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
 465   if (aFeature.get() == NULL)
 466     return;
 467
 468   ModuleBase_IViewer* aViewer = theWorkshop->viewer();
 469   Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
 470   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(theWorkshop);
 471   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 472
 473   // TODO: check all results and IPresentable feature
 474   ResultPtr aResult = aFeature->firstResult();
 475
 476   bool isVisibleSketch = aDisplayer->isVisible(aResult);
 477   AISObjectPtr aAISObj = aDisplayer->getAISObject(aResult);
 478
 479   if (aAISObj.get() != NULL) {
 480     Handle(AIS_InteractiveObject) anAISIO = aAISObj->impl<Handle(AIS_InteractiveObject)>();
 481     for (aContext->InitSelected(); aContext->MoreSelected(); aContext->NextSelected())
 482     {
 483       Handle(StdSelect_BRepOwner) aBRepOwner = Handle(StdSelect_BRepOwner)::DownCast(
 484                                                                       aContext->SelectedOwner());
 485       if (aBRepOwner.IsNull()) continue;
 486
 487       Handle(AIS_InteractiveObject) anIO = Handle(AIS_InteractiveObject)::DownCast(
 488                                                                        aBRepOwner->Selectable());
 489       if (anIO != anAISIO) continue;
 490
 491       if (aBRepOwner->HasShape()) {
 492         const TopoDS_Shape& aShape = aBRepOwner->Shape();
 493         TopAbs_ShapeEnum aShapeType = aShape.ShapeType();
 494         if (aShapeType == TopAbs_VERTEX) {
 495           AttributePtr aPntAttr = PartSet_Tools::findAttributeBy2dPoint(theObject,
 496                                                                         aShape, theSketch);
 497           if (aPntAttr.get() != NULL)
 498             theSelectedAttributes.push_back(aPntAttr);
 499         }
 500       }
 501     }
 502   }
 503 }
 504
 505 void PartSet_SketcherMgr::getSelectionOwners(const ObjectPtr& theObject,
 506                                              const FeaturePtr& theSketch,
 507                                              ModuleBase_IWorkshop* theWorkshop,
 508                                              const std::list<AttributePtr>& theSelectedAttributes,
 509                                              SelectMgr_IndexedMapOfOwner& anOwnersToSelect)
 510 {
 511   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
 512   if (aFeature.get() == NULL)
 513     return;
 514
 515   ModuleBase_IViewer* aViewer = theWorkshop->viewer();
 516   Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
 517   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(theWorkshop);
 518   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 519
 520   // TODO: check all results and IPresentable feature
 521   ResultPtr aResult = aFeature->firstResult();
 522
 523   bool isVisibleSketch = aDisplayer->isVisible(aResult);
 524   AISObjectPtr aAISObj = aDisplayer->getAISObject(aResult);
 525
 526   if (aAISObj.get() != NULL) {
 527     Handle(AIS_InteractiveObject) anAISIO = aAISObj->impl<Handle(AIS_InteractiveObject)>();
 528
 529     SelectMgr_IndexedMapOfOwner aSelectedOwners;
 530
 531     aConnector->workshop()->selector()->selection()->entityOwners(anAISIO, aSelectedOwners);
 532     for  ( Standard_Integer i = 1, n = aSelectedOwners.Extent(); i <= n; i++ ) {
 533       Handle(StdSelect_BRepOwner) anOwner = Handle(StdSelect_BRepOwner)::DownCast(aSelectedOwners(i));
 534       if ( anOwner.IsNull() || !anOwner->HasShape() )
 535         continue;
 536       const TopoDS_Shape& aShape = anOwner->Shape();
 537       TopAbs_ShapeEnum aShapeType = aShape.ShapeType();
 538       if (aShapeType == TopAbs_VERTEX) {
 539         AttributePtr aPntAttr = PartSet_Tools::findAttributeBy2dPoint(aFeature, aShape, theSketch);
 540         if (aPntAttr.get() != NULL) {
 541           std::list<AttributePtr>::const_iterator anIt = theSelectedAttributes.begin(),
 542                                                   aLast = theSelectedAttributes.end();
 543           for (; anIt != aLast; anIt++) {
 544             AttributePtr anAttrIt = *anIt;
 545             if (anAttrIt.get() == aPntAttr.get()) {
 546               anOwnersToSelect.Add(anOwner);
 547             }
 548           }
 549         }
 550       }
 551     }
 552   }
 553 }