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
  17 #include <ModuleBase_IViewer.h>
  18 #include <ModuleBase_IWorkshop.h>
  19 #include <ModuleBase_IViewWindow.h>
  20 #include <ModuleBase_Operation.h>
  21 #include <ModuleBase_ISelection.h>
  22 #include <ModuleBase_IPropertyPanel.h>
  23 #include <ModuleBase_Operation.h>
  24
  25 #include <Events_Loop.h>
  26
  27 #include <SketchPlugin_Line.h>
  28 #include <SketchPlugin_Sketch.h>
  29 #include <SketchPlugin_Point.h>
  30 #include <SketchPlugin_Arc.h>
  31 #include <SketchPlugin_Circle.h>
  32 #include <SketchPlugin_ConstraintLength.h>
  33 #include <SketchPlugin_ConstraintDistance.h>
  34 #include <SketchPlugin_ConstraintParallel.h>
  35 #include <SketchPlugin_ConstraintPerpendicular.h>
  36 #include <SketchPlugin_ConstraintRadius.h>
  37 #include <SketchPlugin_ConstraintRigid.h>
  38
  39 #include <SelectMgr_IndexedMapOfOwner.hxx>
  40 #include <StdSelect_BRepOwner.hxx>
  41
  42 #include <ModelAPI_Events.h>
  43
  44 #include <QMouseEvent>
  45 #include <QApplication>
  46
  47
  48
  49
  50 /// Returns list of unique objects by sum of objects from List1 and List2
  51 QList<ObjectPtr> getSumList(const QList<ModuleBase_ViewerPrs>& theList1,
  52                                        const QList<ModuleBase_ViewerPrs>& theList2)
  53 {
  54   QList<ObjectPtr> aRes;
  55   foreach (ModuleBase_ViewerPrs aPrs, theList1) {
  56     if (!aRes.contains(aPrs.object()))
  57       aRes.append(aPrs.object());
  58   }
  59   foreach (ModuleBase_ViewerPrs aPrs, theList2) {
  60     if (!aRes.contains(aPrs.object()))
  61       aRes.append(aPrs.object());
  62   }
  63   return aRes;
  64 }
  65
  66
  67
  68
  69 PartSet_SketcherMgr::PartSet_SketcherMgr(PartSet_Module* theModule)
  70   : QObject(theModule), myModule(theModule), myIsDragging(false), myDragDone(false)
  71 {
  72   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
  73   ModuleBase_IViewer* aViewer = aWorkshop->viewer();
  74
  75   connect(aViewer, SIGNAL(mousePress(ModuleBase_IViewWindow*, QMouseEvent*)),
  76           this, SLOT(onMousePressed(ModuleBase_IViewWindow*, QMouseEvent*)));
  77
  78   connect(aViewer, SIGNAL(mouseRelease(ModuleBase_IViewWindow*, QMouseEvent*)),
  79           this, SLOT(onMouseReleased(ModuleBase_IViewWindow*, QMouseEvent*)));
  80
  81   connect(aViewer, SIGNAL(mouseMove(ModuleBase_IViewWindow*, QMouseEvent*)),
  82           this, SLOT(onMouseMoved(ModuleBase_IViewWindow*, QMouseEvent*)));
  83
  84   connect(aViewer, SIGNAL(mouseDoubleClick(ModuleBase_IViewWindow*, QMouseEvent*)),
  85           this, SLOT(onMouseDoubleClick(ModuleBase_IViewWindow*, QMouseEvent*)));
  86 }
  87
  88 PartSet_SketcherMgr::~PartSet_SketcherMgr()
  89 {
  90   if (!myPlaneFilter.IsNull())
  91     myPlaneFilter.Nullify();
  92 }
  93
  94 void PartSet_SketcherMgr::onMousePressed(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
  95 {
  96   //
  97   if (!(theEvent->buttons() & Qt::LeftButton))
  98     return;
  99
 100   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
 101   ModuleBase_Operation* aOperation = aWorkshop->currentOperation();
 102   // Use only for sketch operations
 103   if (aOperation && myCurrentSketch) {
 104     if (!PartSet_Tools::sketchPlane(myCurrentSketch))
 105       return;
 106
 107     bool isSketcher = (aOperation->id().toStdString() == SketchPlugin_Sketch::ID());
 108     bool isSketchOpe = sketchOperationIdList().contains(aOperation->id());
 109
 110     // Avoid non-sketch operations
 111     if ((!isSketchOpe) && (!isSketcher))
 112       return;
 113
 114     bool isEditing = aOperation->isEditOperation();
 115
 116     // Ignore creation sketch operation
 117     if ((!isSketcher) && (!isEditing))
 118       return;
 119
 120     if (theEvent->modifiers()) {
 121       // If user performs multiselection
 122       if (isSketchOpe /* && (!isSketcher)*/)
 123         if (!aOperation->commit())
 124           aOperation->abort();
 125       return;
 126     }
 127     // Remember highlighted objects for editing
 128     ModuleBase_ISelection* aSelect = aWorkshop->selection();
 129     QList<ModuleBase_ViewerPrs> aHighlighted = aSelect->getHighlighted();
 130     QList<ModuleBase_ViewerPrs> aSelected = aSelect->getSelected();
 131     myEditingFeatures.clear();
 132     myEditingAttr.clear();
 133
 134     bool aHasShift = (theEvent->modifiers() & Qt::ShiftModifier);
 135     QObjectPtrList aSelObjects;
 136     if (aHasShift)
 137       aSelObjects = getSumList(aHighlighted, aSelected);
 138     else {
 139       foreach (ModuleBase_ViewerPrs aPrs, aHighlighted) {
 140         aSelObjects.append(aPrs.object());
 141       }
 142     }
 143     if ((aSelObjects.size() == 0)) {
 144       if (isSketchOpe && (!isSketcher))
 145         // commit previous operation
 146         if (!aOperation->commit())
 147           aOperation->abort();
 148       return;
 149     }
 150     if ((aHighlighted.size() == 1) && (aSelected.size() == 0)) {
 151       // Move by selected shape (vertex). Can be used only for single selection
 152       foreach(ModuleBase_ViewerPrs aPrs, aHighlighted) {
 153         FeaturePtr aFeature = ModelAPI_Feature::feature(aHighlighted.first().object());
 154         if (aFeature) {
 155           myEditingFeatures.append(aFeature);
 156           TopoDS_Shape aShape = aPrs.shape();
 157           if (!aShape.IsNull()) {
 158             if (aShape.ShapeType() == TopAbs_VERTEX) {
 159               AttributePtr aAttr = PartSet_Tools::findAttributeBy2dPoint(myEditingFeatures.first(),
 160                                                                          aShape, myCurrentSketch);
 161               if (aAttr)
 162                 myEditingAttr.append(aAttr);
 163             }
 164           }
 165         }
 166       }
 167     } else {
 168       // Provide multi-selection. Can be used only for features
 169       foreach (ObjectPtr aObj, aSelObjects) {
 170         FeaturePtr aFeature = ModelAPI_Feature::feature(aObj);
 171         if (aFeature && (!myEditingFeatures.contains(aFeature)))
 172           myEditingFeatures.append(aFeature);
 173       }
 174
 175     }
 176     // If nothing highlighted - return
 177     if (myEditingFeatures.size() == 0)
 178       return;
 179
 180     if (isSketcher) {
 181       myIsDragging = true;
 182       get2dPoint(theWnd, theEvent, myCurX, myCurY);
 183       myDragDone = false;
 184       aWorkshop->viewer()->enableMultiselection(false);
 185       launchEditing();
 186
 187     } else if (isSketchOpe && isEditing) {
 188       // If selected another object
 189       aOperation->abort();
 190
 191       myIsDragging = true;
 192       get2dPoint(theWnd, theEvent, myCurX, myCurY);
 193       myDragDone = false;
 194       aWorkshop->viewer()->enableMultiselection(false);
 195
 196       // This is necessary in order to finalize previous operation
 197       QApplication::processEvents();
 198       launchEditing();
 199     }
 200   }
 201 }
 202
 203 void PartSet_SketcherMgr::onMouseReleased(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
 204 {
 205   ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
 206   ModuleBase_Operation* aOp = aWorkshop->currentOperation();
 207   if (!aOp)
 208     return;
 209   if (!sketchOperationIdList().contains(aOp->id()))
 210     return;
 211
 212   // Only for sketcher operations
 213   ModuleBase_IViewer* aViewer = aWorkshop->viewer();
 214   if (myIsDragging) {
 215     myIsDragging = false;
 216     if (myDragDone) {
 217       aViewer->enableMultiselection(true);
 218       aOp->commit();
 219       myEditingFeatures.clear();
 220       myEditingAttr.clear();
 221       return;
 222     }
 223   }
 224   if (!aViewer->isMultiSelectionEnabled()) {
 225     aViewer->enableMultiselection(true);
 226   }
 227   //aViewer->AISContext()->MoveTo(theEvent->x(), theEvent->y(), theWnd->v3dView());
 228   //if (theEvent->modifiers() & Qt::ShiftModifier)
 229   //  aViewer->AISContext()->ShiftSelect();
 230   //else
 231   //  aViewer->AISContext()->Select();
 232 }
 233
 234 void PartSet_SketcherMgr::onMouseMoved(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
 235 {
 236   if (myIsDragging) {
 237     ModuleBase_Operation* aOperation = myModule->workshop()->currentOperation();
 238     if (aOperation->id().toStdString() == SketchPlugin_Sketch::ID())
 239       return; // No edit operation activated
 240
 241     static Events_ID anEvent = Events_Loop::eventByName(EVENT_OBJECT_MOVED);
 242     Handle(V3d_View) aView = theWnd->v3dView();
 243     gp_Pnt aPoint = PartSet_Tools::convertClickToPoint(theEvent->pos(), aView);
 244     double aX, aY;
 245     PartSet_Tools::convertTo2D(aPoint, myCurrentSketch, aView, aX, aY);
 246     double dX =  aX - myCurX;
 247     double dY =  aY - myCurY;
 248
 249     if ((aOperation->id().toStdString() == SketchPlugin_Line::ID()) &&
 250         (myEditingAttr.size() == 1) &&
 251         myEditingAttr.first()) {
 252       // probably we have prehighlighted point
 253       AttributePtr aAttr = myEditingAttr.first();
 254       std::string aAttrId = aAttr->id();
 255       ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
 256       QList<ModuleBase_ModelWidget*> aWidgets = aPanel->modelWidgets();
 257       // Find corresponded widget to provide dragging
 258       foreach (ModuleBase_ModelWidget* aWgt, aWidgets) {
 259         if (aWgt->attributeID() == aAttrId) {
 260           PartSet_WidgetPoint2D* aWgt2d = dynamic_cast<PartSet_WidgetPoint2D*>(aWgt);
 261           if (aWgt2d) {
 262             aWgt2d->setPoint(aWgt2d->x() + dX, aWgt2d->y() + dY);
 263             break;
 264           }
 265         }
 266       }
 267     } else {
 268       foreach(FeaturePtr aFeature, myEditingFeatures) {
 269         std::shared_ptr<SketchPlugin_Feature> aSketchFeature =
 270           std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
 271         if (aSketchFeature) {
 272           // save the previous selection
 273           /*ModuleBase_IWorkshop* aWorkshop = myModule->workshop();
 274           XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(aWorkshop);
 275           XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 276           QIntList anActivatedModes;
 277
 278           ResultPtr aResult = aSketchFeature->firstResult();
 279
 280           aDisplayer->getModesOfActivation(aResult, anActivatedModes);
 281
 282           std::list<AttributePtr> aSelectedAttributes;
 283           getCurrentSelection(aSketchFeature, myCurrentSketch, aWorkshop, aSelectedAttributes);*/
 284           // save the previous selection: end
 285
 286
 287           aSketchFeature->move(dX, dY);
 288           ModelAPI_EventCreator::get()->sendUpdated(aSketchFeature, anEvent);
 289           /*
 290           // TODO: the selection restore should be after the AIS presentation is rebuilt
 291           Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_MOVED));
 292           Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
 293
 294           // restore the previous selection
 295           aResult = aSketchFeature->firstResult();
 296             aDisplayer->activate(aResult, anActivatedModes);
 297
 298           SelectMgr_IndexedMapOfOwner anOwnersToSelect;
 299           getSelectionOwners(aSketchFeature, myCurrentSketch, aWorkshop, aSelectedAttributes,
 300                              anOwnersToSelect);
 301
 302           ModuleBase_IViewer* aViewer = aWorkshop->viewer();
 303           Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
 304           for (Standard_Integer i = 1, n = anOwnersToSelect.Extent(); i <= n; i++)
 305             aContext->AddOrRemoveSelected(anOwnersToSelect(i), false); // SetSelected()
 306
 307           aContext->UpdateCurrentViewer();
 308           // restore the previous selection*/
 309         }
 310       }
 311       // TODO: set here
 312       Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_MOVED));
 313       Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
 314     }
 315     myDragDone = true;
 316     myCurX = aX;
 317     myCurY = aY;
 318   }
 319 }
 320
 321 void PartSet_SketcherMgr::onMouseDoubleClick(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent)
 322 {
 323   ModuleBase_Operation* aOperation = myModule->workshop()->currentOperation();
 324   if (aOperation && aOperation->isEditOperation()) {
 325     std::string aId = aOperation->id().toStdString();
 326     if ((aId == SketchPlugin_ConstraintLength::ID()) ||
 327       (aId == SketchPlugin_ConstraintDistance::ID()) ||
 328       (aId == SketchPlugin_ConstraintRadius::ID()))
 329     {
 330       // Activate dimension value editing on double click
 331       ModuleBase_IPropertyPanel* aPanel = aOperation->propertyPanel();
 332       QList<ModuleBase_ModelWidget*> aWidgets = aPanel->modelWidgets();
 333       // Find corresponded widget to activate value editing
 334       foreach (ModuleBase_ModelWidget* aWgt, aWidgets) {
 335         if (aWgt->attributeID() == "ConstraintValue") {
 336           aWgt->focusTo();
 337           return;
 338         }
 339       }
 340     }
 341   }
 342 }
 343
 344 void PartSet_SketcherMgr::get2dPoint(ModuleBase_IViewWindow* theWnd, QMouseEvent* theEvent,
 345                                 double& theX, double& theY)
 346 {
 347   Handle(V3d_View) aView = theWnd->v3dView();
 348   gp_Pnt aPoint = PartSet_Tools::convertClickToPoint(theEvent->pos(), aView);
 349   PartSet_Tools::convertTo2D(aPoint, myCurrentSketch, aView, theX, theY);
 350 }
 351
 352 void PartSet_SketcherMgr::launchEditing()
 353 {
 354   if (myEditingFeatures.size() > 0) {
 355     FeaturePtr aFeature = myEditingFeatures.first();
 356     std::shared_ptr<SketchPlugin_Feature> aSPFeature =
 357               std::dynamic_pointer_cast<SketchPlugin_Feature>(aFeature);
 358     if (aSPFeature) {
 359       myModule->editFeature(aSPFeature);
 360     }
 361   }
 362 }
 363
 364
 365 QStringList PartSet_SketcherMgr::sketchOperationIdList()
 366 {
 367   static QStringList aIds;
 368   if (aIds.size() == 0) {
 369     aIds << SketchPlugin_Line::ID().c_str();
 370     aIds << SketchPlugin_Point::ID().c_str();
 371     aIds << SketchPlugin_Arc::ID().c_str();
 372     aIds << SketchPlugin_Circle::ID().c_str();
 373     aIds << SketchPlugin_ConstraintLength::ID().c_str();
 374     aIds << SketchPlugin_ConstraintDistance::ID().c_str();
 375     aIds << SketchPlugin_ConstraintRigid::ID().c_str();
 376     aIds << SketchPlugin_ConstraintRadius::ID().c_str();
 377     aIds << SketchPlugin_ConstraintPerpendicular::ID().c_str();
 378     aIds << SketchPlugin_ConstraintParallel::ID().c_str();
 379   }
 380   return aIds;
 381 }
 382
 383 void PartSet_SketcherMgr::startSketch(ModuleBase_Operation* theOperation)
 384 {
 385   // Display all sketcher sub-Objects
 386   myCurrentSketch = std::dynamic_pointer_cast<ModelAPI_CompositeFeature>(theOperation->feature());
 387   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myModule->workshop());
 388   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 389
 390   // Hide sketcher result
 391   std::list<ResultPtr> aResults = myCurrentSketch->results();
 392   std::list<ResultPtr>::const_iterator aIt;
 393   for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 394     aDisplayer->erase((*aIt), false);
 395   }
 396   aDisplayer->erase(myCurrentSketch, false);
 397
 398   // Display sketcher objects
 399   for (int i = 0; i < myCurrentSketch->numberOfSubs(); i++) {
 400     FeaturePtr aFeature = myCurrentSketch->subFeature(i);
 401     std::list<ResultPtr> aResults = aFeature->results();
 402     std::list<ResultPtr>::const_iterator aIt;
 403     for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 404       aDisplayer->display((*aIt), false);
 405     }
 406     aDisplayer->display(aFeature, false);
 407   }
 408
 409   if (myPlaneFilter.IsNull())
 410     myPlaneFilter = new ModuleBase_ShapeInPlaneFilter();
 411
 412   myModule->workshop()->viewer()->addSelectionFilter(myPlaneFilter);
 413   if (theOperation->isEditOperation()) {
 414     // If it is editing of sketch then it means that plane is already defined
 415     std::shared_ptr<GeomAPI_Pln> aPln = PartSet_Tools::sketchPlane(myCurrentSketch);
 416     myPlaneFilter->setPlane(aPln->impl<gp_Pln>());
 417   }
 418   aDisplayer->updateViewer();
 419 }
 420
 421 void PartSet_SketcherMgr::stopSketch(ModuleBase_Operation* theOperation)
 422 {
 423   DataPtr aData = myCurrentSketch->data();
 424   if ((!aData) || (!aData->isValid())) {
 425     // The sketch was aborted
 426     myCurrentSketch = CompositeFeaturePtr();
 427     myModule->workshop()->viewer()->removeSelectionFilter(myPlaneFilter);
 428     return;
 429   }
 430   // Hide all sketcher sub-Objects
 431   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(myModule->workshop());
 432   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 433   for (int i = 0; i < myCurrentSketch->numberOfSubs(); i++) {
 434     FeaturePtr aFeature = myCurrentSketch->subFeature(i);
 435     std::list<ResultPtr> aResults = aFeature->results();
 436     std::list<ResultPtr>::const_iterator aIt;
 437     for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 438       aDisplayer->erase((*aIt), false);
 439     }
 440     aDisplayer->erase(aFeature, false);
 441   }
 442   // Display sketcher result
 443   std::list<ResultPtr> aResults = myCurrentSketch->results();
 444   std::list<ResultPtr>::const_iterator aIt;
 445   for (aIt = aResults.begin(); aIt != aResults.end(); ++aIt) {
 446     aDisplayer->display((*aIt), false);
 447   }
 448   aDisplayer->display(myCurrentSketch);
 449
 450   myCurrentSketch = CompositeFeaturePtr();
 451   myModule->workshop()->viewer()->removeSelectionFilter(myPlaneFilter);
 452   aDisplayer->updateViewer();
 453 }
 454
 455
 456 void PartSet_SketcherMgr::onPlaneSelected(const std::shared_ptr<GeomAPI_Pln>& thePln)
 457 {
 458   myPlaneFilter->setPlane(thePln->impl<gp_Pln>());
 459 }
 460
 461 void PartSet_SketcherMgr::getCurrentSelection(const ObjectPtr& theObject,
 462                                               const FeaturePtr& theSketch,
 463                                               ModuleBase_IWorkshop* theWorkshop,
 464                                               std::list<AttributePtr>& theSelectedAttributes)
 465 {
 466   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
 467   if (aFeature.get() == NULL)
 468     return;
 469
 470   ModuleBase_IViewer* aViewer = theWorkshop->viewer();
 471   Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
 472   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(theWorkshop);
 473   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 474
 475   // TODO: check all results and IPresentable feature
 476   ResultPtr aResult = aFeature->firstResult();
 477
 478   bool isVisibleSketch = aDisplayer->isVisible(aResult);
 479   AISObjectPtr aAISObj = aDisplayer->getAISObject(aResult);
 480
 481   if (aAISObj.get() != NULL) {
 482     Handle(AIS_InteractiveObject) anAISIO = aAISObj->impl<Handle(AIS_InteractiveObject)>();
 483     for (aContext->InitSelected(); aContext->MoreSelected(); aContext->NextSelected())
 484     {
 485       Handle(StdSelect_BRepOwner) aBRepOwner = Handle(StdSelect_BRepOwner)::DownCast(
 486                                                                       aContext->SelectedOwner());
 487       if (aBRepOwner.IsNull()) continue;
 488
 489       Handle(AIS_InteractiveObject) anIO = Handle(AIS_InteractiveObject)::DownCast(
 490                                                                        aBRepOwner->Selectable());
 491       if (anIO != anAISIO) continue;
 492
 493       if (aBRepOwner->HasShape()) {
 494         const TopoDS_Shape& aShape = aBRepOwner->Shape();
 495         TopAbs_ShapeEnum aShapeType = aShape.ShapeType();
 496         if (aShapeType == TopAbs_VERTEX) {
 497           AttributePtr aPntAttr = PartSet_Tools::findAttributeBy2dPoint(theObject,
 498                                                                         aShape, theSketch);
 499           if (aPntAttr.get() != NULL)
 500             theSelectedAttributes.push_back(aPntAttr);
 501         }
 502       }
 503     }
 504   }
 505 }
 506
 507 void PartSet_SketcherMgr::getSelectionOwners(const ObjectPtr& theObject,
 508                                              const FeaturePtr& theSketch,
 509                                              ModuleBase_IWorkshop* theWorkshop,
 510                                              const std::list<AttributePtr>& theSelectedAttributes,
 511                                              SelectMgr_IndexedMapOfOwner& anOwnersToSelect)
 512 {
 513   FeaturePtr aFeature = ModelAPI_Feature::feature(theObject);
 514   if (aFeature.get() == NULL)
 515     return;
 516
 517   ModuleBase_IViewer* aViewer = theWorkshop->viewer();
 518   Handle(AIS_InteractiveContext) aContext = aViewer->AISContext();
 519   XGUI_ModuleConnector* aConnector = dynamic_cast<XGUI_ModuleConnector*>(theWorkshop);
 520   XGUI_Displayer* aDisplayer = aConnector->workshop()->displayer();
 521
 522   // TODO: check all results and IPresentable feature
 523   ResultPtr aResult = aFeature->firstResult();
 524
 525   bool isVisibleSketch = aDisplayer->isVisible(aResult);
 526   AISObjectPtr aAISObj = aDisplayer->getAISObject(aResult);
 527
 528   if (aAISObj.get() != NULL) {
 529     Handle(AIS_InteractiveObject) anAISIO = aAISObj->impl<Handle(AIS_InteractiveObject)>();
 530
 531     SelectMgr_IndexedMapOfOwner aSelectedOwners;
 532
 533     XGUI_Selection::entityOwners(anAISIO, aContext, aSelectedOwners);
 534     for  ( Standard_Integer i = 1, n = aSelectedOwners.Extent(); i <= n; i++ ) {
 535       Handle(StdSelect_BRepOwner) anOwner = Handle(StdSelect_BRepOwner)::DownCast(aSelectedOwners(i));
 536       if ( anOwner.IsNull() || !anOwner->HasShape() )
 537         continue;
 538       const TopoDS_Shape& aShape = anOwner->Shape();
 539       TopAbs_ShapeEnum aShapeType = aShape.ShapeType();
 540       if (aShapeType == TopAbs_VERTEX) {
 541         AttributePtr aPntAttr = PartSet_Tools::findAttributeBy2dPoint(aFeature, aShape, theSketch);
 542         if (aPntAttr.get() != NULL) {
 543           std::list<AttributePtr>::const_iterator anIt = theSelectedAttributes.begin(),
 544                                                   aLast = theSelectedAttributes.end();
 545           for (; anIt != aLast; anIt++) {
 546             AttributePtr anAttrIt = *anIt;
 547             if (anAttrIt.get() == aPntAttr.get()) {
 548               anOwnersToSelect.Add(anOwner);
 549             }
 550           }
 551         }
 552       }
 553     }
 554   }
 555 }