src/SMESHGUI/SMESHGUI_VTKUtils.cxx

   1 //  Copyright (C) 2007-2010  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 //  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 //  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   6 //  This library is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU Lesser General Public
   8 //  License as published by the Free Software Foundation; either
   9 //  version 2.1 of the License.
  10 //
  11 //  This library is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 //  Lesser General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU Lesser General Public
  17 //  License along with this library; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 //
  20 //  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  21 //
  22
  23 // SMESH SMESHGUI : GUI for SMESH component
  24 // File   : SMESHGUI_VTKUtils.cxx
  25 // Author : Open CASCADE S.A.S.
  26 // SMESH includes
  27 //
  28 #include "SMESHGUI_VTKUtils.h"
  29
  30 #include "SMESHGUI.h"
  31 #include "SMESHGUI_Utils.h"
  32 #include "SMESHGUI_Filter.h"
  33
  34 #include <SMESH_Actor.h>
  35 #include <SMESH_ActorUtils.h>
  36 #include <SMESH_ObjectDef.h>
  37 #include <SMDS_Mesh.hxx>
  38
  39 // SALOME GUI includes
  40 #include <SUIT_Desktop.h>
  41 #include <SUIT_Session.h>
  42 #include <SUIT_MessageBox.h>
  43 #include <SUIT_ViewManager.h>
  44 #include <SUIT_ResourceMgr.h>
  45
  46 #include <SALOME_ListIO.hxx>
  47 #include <SALOME_ListIteratorOfListIO.hxx>
  48
  49 #include <SVTK_Selector.h>
  50 #include <SVTK_ViewModel.h>
  51 #include <SVTK_ViewWindow.h>
  52
  53 #include <VTKViewer_Algorithm.h>
  54
  55 #include <LightApp_SelectionMgr.h>
  56 #include <SalomeApp_Application.h>
  57 #include <SalomeApp_Study.h>
  58
  59 // SALOME KERNEL includes
  60 #include <utilities.h>
  61
  62 // IDL includes
  63 #include <SALOMEconfig.h>
  64 #include CORBA_CLIENT_HEADER(SMESH_Mesh)
  65 #include CORBA_CLIENT_HEADER(SMESH_Group)
  66
  67 // VTK includes
  68 #include <vtkRenderer.h>
  69 #include <vtkActorCollection.h>
  70 #include <vtkUnstructuredGrid.h>
  71
  72 // OCCT includes
  73 #include <TColStd_IndexedMapOfInteger.hxx>
  74 #include <Standard_ErrorHandler.hxx>
  75
  76 namespace SMESH
  77 {
  78   typedef std::map<TKeyOfVisualObj,TVisualObjPtr> TVisualObjCont;
  79   static TVisualObjCont VISUAL_OBJ_CONT;
  80
  81   //=============================================================================
  82   /*!
  83    * \brief Allocate some memory at construction and release it at destruction.
  84    * Is used to be able to continue working after mesh generation or visualization
  85    * break due to lack of memory
  86    */
  87   //=============================================================================
  88
  89   struct MemoryReserve
  90   {
  91     char* myBuf;
  92     MemoryReserve(): myBuf( new char[1024*1024*1] ){} // 1M
  93     void Free() { if (myBuf) { delete [] myBuf; myBuf = 0; }}
  94     ~MemoryReserve() { Free(); }
  95   };
  96   static MemoryReserve* theVISU_MemoryReserve = new MemoryReserve;
  97
  98   //================================================================================
  99   /*!
 100    * \brief Remove VisualObj and its actor from all views
 101    */
 102   //================================================================================
 103
 104   void RemoveVisualObjectWithActors( const char* theEntry )
 105   {
 106     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>
 107       ( SUIT_Session::session()->activeApplication() );
 108     SUIT_ViewManager* aViewManager =
 109       app ? app->getViewManager(SVTK_Viewer::Type(), true) : 0;
 110     if ( aViewManager ) {
 111       QVector<SUIT_ViewWindow*> views = aViewManager->getViews();
 112       for ( int iV = 0; iV < views.count(); ++iV ) {
 113         if ( SMESH_Actor* actor = FindActorByEntry( views[iV], theEntry)) {
 114           if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(views[iV]))
 115             vtkWnd->RemoveActor(actor);
 116           actor->Delete();
 117         }
 118       }
 119       int aStudyId = aViewManager->study()->id();
 120       TVisualObjCont::key_type aKey(aStudyId,theEntry);
 121       TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.find(aKey);
 122       if(anIter != VISUAL_OBJ_CONT.end()) {
 123         // for unknown reason, object destructor is not called, so clear object manually
 124         anIter->second->GetUnstructuredGrid()->SetCells(0,0,0);
 125         anIter->second->GetUnstructuredGrid()->SetPoints(0);
 126       }
 127       VISUAL_OBJ_CONT.erase(aKey);
 128     }
 129   }
 130   //================================================================================
 131   /*!
 132    * \brief Remove all VisualObjs and their actors from all views
 133    */
 134   //================================================================================
 135
 136   void RemoveAllObjectsWithActors()
 137   {
 138     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>
 139       ( SUIT_Session::session()->activeApplication() );
 140     if (!app) return;
 141     ViewManagerList viewMgrs = app->viewManagers();
 142     for ( int iM = 0; iM < viewMgrs.count(); ++iM ) {
 143       SUIT_ViewManager* aViewManager = viewMgrs.at( iM );
 144       if ( aViewManager && aViewManager->getType() == SVTK_Viewer::Type()) {
 145         QVector<SUIT_ViewWindow*> views = aViewManager->getViews();
 146         for ( int iV = 0; iV < views.count(); ++iV ) {
 147           if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(views[iV])) {
 148             vtkRenderer *aRenderer = vtkWnd->getRenderer();
 149             VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 150             vtkActorCollection *actors = aCopy.GetActors();
 151             for (int i = 0; i < actors->GetNumberOfItems(); ++i ) {
 152               // size of actors changes inside the loop
 153               if (SMESH_Actor *actor = dynamic_cast<SMESH_Actor*>(actors->GetItemAsObject(i)))
 154               {
 155                 vtkWnd->RemoveActor(actor);
 156                 actor->Delete();
 157               }
 158             }
 159           }
 160         }
 161       }
 162     }
 163     TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.begin();
 164     for ( ; anIter != VISUAL_OBJ_CONT.end(); ++anIter ) {
 165       // for unknown reason, object destructor is not called, so clear object manually
 166       anIter->second->GetUnstructuredGrid()->SetCells(0,0,0);
 167       anIter->second->GetUnstructuredGrid()->SetPoints(0);
 168     }
 169     VISUAL_OBJ_CONT.clear();
 170   }
 171
 172   //================================================================================
 173   /*!
 174    * \brief Remove all VisualObjs of a study
 175    */
 176   //================================================================================
 177
 178   void RemoveVisuData(int studyID)
 179   {
 180     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>
 181       ( SUIT_Session::session()->activeApplication() );
 182     if (!app) return;
 183     ViewManagerList viewMgrs = app->viewManagers();
 184     for ( int iM = 0; iM < viewMgrs.count(); ++iM ) {
 185       SUIT_ViewManager* aViewManager = viewMgrs.at( iM );
 186       if ( aViewManager && aViewManager->getType() == SVTK_Viewer::Type() &&
 187            aViewManager->study()->id() == studyID ) {
 188         QVector<SUIT_ViewWindow*> views = aViewManager->getViews();
 189         for ( int iV = 0; iV < views.count(); ++iV ) {
 190           if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(views[iV])) {
 191             vtkRenderer *aRenderer = vtkWnd->getRenderer();
 192             VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 193             vtkActorCollection *actors = aCopy.GetActors();
 194             for (int i = 0; i < actors->GetNumberOfItems(); ++i ) {
 195               // size of actors changes inside the loop
 196               if(SMESH_Actor *actor = dynamic_cast<SMESH_Actor*>(actors->GetItemAsObject(i)))
 197               {
 198                 vtkWnd->RemoveActor(actor);
 199                 actor->Delete();
 200               }
 201             }
 202           }
 203         }
 204       }
 205     }
 206     TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.begin();
 207     for ( ; anIter != VISUAL_OBJ_CONT.end(); ++anIter ) {
 208       int curId = anIter->first.first;
 209       if ( curId == studyID ) {
 210         // for unknown reason, object destructor is not called, so clear object manually
 211         anIter->second->GetUnstructuredGrid()->SetCells(0,0,0);
 212         anIter->second->GetUnstructuredGrid()->SetPoints(0);
 213         VISUAL_OBJ_CONT.erase( anIter-- );  // dercement occures before erase()
 214       }
 215     }
 216   }
 217
 218   //================================================================================
 219   /*!
 220    * \brief Notify the user on problems during visualization
 221    */
 222   //================================================================================
 223
 224   void OnVisuException()
 225   {
 226     try {
 227 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 228       OCC_CATCH_SIGNALS;
 229 #endif
 230       // PAL16774 (Crash after display of many groups). Salome sometimes crashes just
 231       // after or at showing this message, so we do an additional check of available memory
 232 //       char* buf = new char[100*1024];
 233 //       delete [] buf;
 234       SUIT_MessageBox::warning(SMESHGUI::desktop(), QObject::tr("SMESH_WRN_WARNING"),
 235                                QObject::tr("SMESH_VISU_PROBLEM"));
 236     } catch (...) {
 237       // no more memory at all: last resort
 238       MESSAGE_BEGIN ( "SMESHGUI_VTKUtils::OnVisuException(), exception even at showing a message!!!" <<
 239                       std::endl << "Try to remove all visual data..." );
 240       if (theVISU_MemoryReserve) {
 241         delete theVISU_MemoryReserve;
 242         theVISU_MemoryReserve = 0;
 243       }
 244       RemoveAllObjectsWithActors();
 245       SUIT_MessageBox::warning(SMESHGUI::desktop(), QObject::tr("SMESH_WRN_WARNING"),
 246                                QObject::tr("SMESH_VISU_PROBLEM_CLEAR"));
 247       MESSAGE_END ( "...done" );
 248     }
 249   }
 250   //================================================================================
 251   /*!
 252    * \brief Returns an updated visual object
 253    */
 254   //================================================================================
 255
 256   TVisualObjPtr GetVisualObj(int theStudyId, const char* theEntry, bool nulData){
 257     TVisualObjPtr aVisualObj;
 258     TVisualObjCont::key_type aKey(theStudyId,theEntry);
 259     try{
 260 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 261       OCC_CATCH_SIGNALS;
 262 #endif
 263       TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.find(aKey);
 264       if(anIter != VISUAL_OBJ_CONT.end()){
 265         aVisualObj = anIter->second;
 266       }else{
 267         SalomeApp_Application* app =
 268           dynamic_cast<SalomeApp_Application*>( SMESHGUI::activeStudy()->application() );
 269         _PTR(Study) aStudy = SMESHGUI::activeStudy()->studyDS();
 270         _PTR(SObject) aSObj = aStudy->FindObjectID(theEntry);
 271         if(aSObj){
 272           _PTR(GenericAttribute) anAttr;
 273           if(aSObj->FindAttribute(anAttr,"AttributeIOR")){
 274             _PTR(AttributeIOR) anIOR = anAttr;
 275             CORBA::String_var aVal = anIOR->Value().c_str();
 276             CORBA::Object_var anObj = app->orb()->string_to_object( aVal.in() );
 277             if(!CORBA::is_nil(anObj)){
 278               //Try narrow to SMESH_Mesh interface
 279               SMESH::SMESH_Mesh_var aMesh = SMESH::SMESH_Mesh::_narrow(anObj);
 280               if(!aMesh->_is_nil()){
 281                 aVisualObj.reset(new SMESH_MeshObj(aMesh));
 282                 TVisualObjCont::value_type aValue(aKey,aVisualObj);
 283                 VISUAL_OBJ_CONT.insert(aValue);
 284               }
 285               //Try narrow to SMESH_Group interface
 286               SMESH::SMESH_GroupBase_var aGroup = SMESH::SMESH_GroupBase::_narrow(anObj);
 287               if(!aGroup->_is_nil()){
 288                 _PTR(SObject) aFatherSObj = aSObj->GetFather();
 289                 if(!aFatherSObj) return aVisualObj;
 290                 aFatherSObj = aFatherSObj->GetFather();
 291                 if(!aFatherSObj) return aVisualObj;
 292                 CORBA::String_var anEntry = aFatherSObj->GetID().c_str();
 293                 TVisualObjPtr aVisObj = GetVisualObj(theStudyId,anEntry.in());
 294                 if(SMESH_MeshObj* aMeshObj = dynamic_cast<SMESH_MeshObj*>(aVisObj.get())){
 295                   aVisualObj.reset(new SMESH_GroupObj(aGroup,aMeshObj));
 296                   TVisualObjCont::value_type aValue(aKey,aVisualObj);
 297                   VISUAL_OBJ_CONT.insert(aValue);
 298                 }
 299               }
 300               //Try narrow to SMESH_subMesh interface
 301               SMESH::SMESH_subMesh_var aSubMesh = SMESH::SMESH_subMesh::_narrow(anObj);
 302               if(!aSubMesh->_is_nil()){
 303                 _PTR(SObject) aFatherSObj = aSObj->GetFather();
 304                 if(!aFatherSObj) return aVisualObj;
 305                 aFatherSObj = aFatherSObj->GetFather();
 306                 if(!aFatherSObj) return aVisualObj;
 307                 CORBA::String_var anEntry = aFatherSObj->GetID().c_str();
 308                 TVisualObjPtr aVisObj = GetVisualObj(theStudyId,anEntry.in());
 309                 if(SMESH_MeshObj* aMeshObj = dynamic_cast<SMESH_MeshObj*>(aVisObj.get())){
 310                   aVisualObj.reset(new SMESH_subMeshObj(aSubMesh,aMeshObj));
 311                   TVisualObjCont::value_type aValue(aKey,aVisualObj);
 312                   VISUAL_OBJ_CONT.insert(aValue);
 313                 }
 314               }
 315             }
 316           }
 317         }
 318       }
 319     }catch(...){
 320       INFOS("GetMeshObj - There is no SMESH_Mesh object for the SALOMEDS::Strudy and Entry!!!");
 321       return TVisualObjPtr();
 322     }
 323     // Update object
 324     bool objModified = false;
 325     if ( aVisualObj ) {
 326       try {
 327 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 328         OCC_CATCH_SIGNALS;
 329 #endif
 330         //MESSAGE("GetVisualObj");
 331         if (nulData)
 332                 objModified = aVisualObj->NulData();
 333         else
 334           objModified = aVisualObj->Update();
 335       }
 336       catch (...) {
 337 #ifdef _DEBUG_
 338         MESSAGE ( "Exception in SMESHGUI_VTKUtils::GetVisualObj()" );
 339 #endif
 340         RemoveVisualObjectWithActors( theEntry ); // remove this object
 341         OnVisuException();
 342         aVisualObj.reset();
 343       }
 344     }
 345
 346     if ( objModified ) {
 347       // PAL16631. Mesurements showed that to show aVisualObj in SHADING(default) mode,
 348       // ~10 times more memory is used than it occupies.
 349       // Warn the user if there is less free memory than 30 sizes of a grid
 350       // TODO: estimate memory usage in other modes and take current mode into account
 351       int freeMB = SMDS_Mesh::CheckMemory(true);
 352       int usedMB = aVisualObj->GetUnstructuredGrid()->GetActualMemorySize() / 1024;
 353       if ( freeMB > 0 && usedMB * 30 > freeMB ) {
 354 #ifdef _DEBUG_
 355         MESSAGE ( "SMESHGUI_VTKUtils::GetVisualObj(), freeMB=" << freeMB
 356                << ", usedMB=" << usedMB );
 357 #endif
 358 //        bool continu = false;
 359 //        if ( usedMB * 10 > freeMB )
 360 //          // even dont try to show
 361 //          SUIT_MessageBox::warning(SMESHGUI::desktop(), QObject::tr("SMESH_WRN_WARNING"),
 362 //                                   QObject::tr("SMESH_NO_MESH_VISUALIZATION"));
 363 //        else
 364 //          // there is a chance to succeed
 365 //          continu = SUIT_MessageBox::warning
 366 //            (SMESHGUI::desktop(),
 367 //             QObject::tr("SMESH_WRN_WARNING"),
 368 //             QObject::tr("SMESH_CONTINUE_MESH_VISUALIZATION"),
 369 //             SUIT_MessageBox::Yes | SUIT_MessageBox::No,
 370 //             SUIT_MessageBox::Yes ) == SUIT_MessageBox::Yes;
 371 //        if ( !continu ) {
 372 //          // remove the corresponding actors from all views
 373 //          RemoveVisualObjectWithActors( theEntry );
 374 //          aVisualObj.reset();
 375 //        }
 376       }
 377     }
 378
 379     return aVisualObj;
 380   }
 381
 382
 383   /*! Return active view window, if it instantiates SVTK_ViewWindow class,
 384    *  overwise find or create corresponding view window, make it active and return it.
 385    *  \note Active VVTK_ViewWindow can be returned, because it inherits SVTK_ViewWindow.
 386    */
 387   SVTK_ViewWindow* GetViewWindow (const SalomeApp_Module* theModule,
 388                                   bool createIfNotFound)
 389   {
 390     SalomeApp_Application* anApp;
 391     if (theModule)
 392       anApp = theModule->getApp();
 393     else
 394       anApp = dynamic_cast<SalomeApp_Application*>
 395         (SUIT_Session::session()->activeApplication());
 396
 397     if (anApp) {
 398       if (SVTK_ViewWindow* aView = dynamic_cast<SVTK_ViewWindow*>(anApp->desktop()->activeWindow()))
 399         return aView;
 400
 401       SUIT_ViewManager* aViewManager =
 402         anApp->getViewManager(SVTK_Viewer::Type(), createIfNotFound);
 403       if (aViewManager) {
 404         if (SUIT_ViewWindow* aViewWindow = aViewManager->getActiveView()) {
 405           if (SVTK_ViewWindow* aView = dynamic_cast<SVTK_ViewWindow*>(aViewWindow)) {
 406             aViewWindow->raise();
 407             aViewWindow->setFocus();
 408             return aView;
 409           }
 410         }
 411       }
 412     }
 413     return NULL;
 414   }
 415
 416   SVTK_ViewWindow* FindVtkViewWindow (SUIT_ViewManager* theMgr,
 417                                       SUIT_ViewWindow * theWindow)
 418   {
 419     if( !theMgr )
 420       return NULL;
 421
 422     QVector<SUIT_ViewWindow*> views = theMgr->getViews();
 423     if( views.contains( theWindow ) )
 424       return GetVtkViewWindow( theWindow );
 425     else
 426       return NULL;
 427   }
 428
 429   SVTK_ViewWindow* GetVtkViewWindow(SUIT_ViewWindow* theWindow){
 430     return dynamic_cast<SVTK_ViewWindow*>(theWindow);
 431   }
 432
 433 /*  SUIT_ViewWindow* GetActiveWindow()
 434   {
 435     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>( SUIT_Session::session()->activeApplication() );
 436     if( !app )
 437       return NULL;
 438     SUIT_ViewManager* mgr = app->activeViewManager();
 439     if( mgr )
 440       return mgr->getActiveView();
 441     else
 442       return NULL;
 443   }*/
 444
 445   SVTK_ViewWindow* GetCurrentVtkView(){
 446     return GetVtkViewWindow( GetActiveWindow() );
 447   }
 448
 449
 450   void RepaintCurrentView()
 451   {
 452     if (SVTK_ViewWindow* wnd = GetCurrentVtkView())
 453     {
 454       try {
 455 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 456         OCC_CATCH_SIGNALS;
 457 #endif
 458         wnd->getRenderer()->Render();
 459         wnd->Repaint(false);
 460       }
 461       catch (...) {
 462 #ifdef _DEBUG_
 463         MESSAGE ( "Exception in SMESHGUI_VTKUtils::RepaintCurrentView()" );
 464 #endif
 465         OnVisuException();
 466       }
 467     }
 468   }
 469
 470   void RepaintViewWindow(SVTK_ViewWindow* theWindow)
 471   {
 472     try {
 473 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 474       OCC_CATCH_SIGNALS;
 475 #endif
 476       theWindow->getRenderer()->Render();
 477       theWindow->Repaint();
 478     }
 479     catch (...) {
 480 #ifdef _DEBUG_
 481       MESSAGE ( "Exception in SMESHGUI_VTKUtils::RepaintViewWindow(SVTK_ViewWindow*)" );
 482 #endif
 483       OnVisuException();
 484     }
 485   }
 486
 487   void RenderViewWindow(SVTK_ViewWindow* theWindow)
 488   {
 489     try {
 490 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 491       OCC_CATCH_SIGNALS;
 492 #endif
 493       theWindow->getRenderer()->Render();
 494       theWindow->Repaint();
 495     }
 496     catch (...) {
 497 #ifdef _DEBUG_
 498       MESSAGE ( "Exception in SMESHGUI_VTKUtils::RenderViewWindow(SVTK_ViewWindow*)" );
 499 #endif
 500       OnVisuException();
 501     }
 502   }
 503
 504   void FitAll(){
 505     if(SVTK_ViewWindow* wnd = GetCurrentVtkView() ){
 506       try {
 507 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 508         OCC_CATCH_SIGNALS;
 509 #endif
 510         wnd->onFitAll();
 511         wnd->Repaint();
 512       }
 513       catch (...) {
 514 #ifdef _DEBUG_
 515         MESSAGE ( "Exception in SMESHGUI_VTKUtils::FitAll()" );
 516 #endif
 517         OnVisuException();
 518       }
 519     }
 520   }
 521
 522
 523   SMESH_Actor* FindActorByEntry(SUIT_ViewWindow *theWindow,
 524                                 const char* theEntry)
 525   {
 526     if(SVTK_ViewWindow* aViewWindow = GetVtkViewWindow(theWindow)){
 527       vtkRenderer *aRenderer = aViewWindow->getRenderer();
 528       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 529       vtkActorCollection *aCollection = aCopy.GetActors();
 530       aCollection->InitTraversal();
 531       while(vtkActor *anAct = aCollection->GetNextActor()){
 532         if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
 533           if(anActor->hasIO()){
 534             Handle(SALOME_InteractiveObject) anIO = anActor->getIO();
 535             if(anIO->hasEntry() && strcmp(anIO->getEntry(),theEntry) == 0){
 536               return anActor;
 537             }
 538           }
 539         }
 540       }
 541     }
 542     return NULL;
 543   }
 544
 545
 546   SMESH_Actor* FindActorByEntry(const char* theEntry){
 547     return FindActorByEntry(GetActiveWindow(),theEntry);
 548   }
 549
 550
 551   SMESH_Actor* FindActorByObject(CORBA::Object_ptr theObject){
 552     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>( SUIT_Session::session()->activeApplication() );
 553     if( !app )
 554       return NULL;
 555
 556     if(!CORBA::is_nil(theObject)){
 557       _PTR(Study) aStudy = GetActiveStudyDocument();
 558       CORBA::String_var anIOR = app->orb()->object_to_string( theObject );
 559       _PTR(SObject) aSObject = aStudy->FindObjectIOR(anIOR.in());
 560       if(aSObject){
 561         CORBA::String_var anEntry = aSObject->GetID().c_str();
 562         return FindActorByEntry(anEntry.in());
 563       }
 564     }
 565     return NULL;
 566   }
 567
 568
 569   SMESH_Actor* CreateActor(_PTR(Study) theStudy,
 570                            const char* theEntry,
 571                            int theIsClear)
 572   {
 573     SMESH_Actor *anActor = NULL;
 574     CORBA::Long anId = theStudy->StudyId();
 575     if(TVisualObjPtr aVisualObj = GetVisualObj(anId,theEntry)){
 576       _PTR(SObject) aSObj = theStudy->FindObjectID(theEntry);
 577       if(aSObj){
 578         _PTR(GenericAttribute) anAttr;
 579         if(aSObj->FindAttribute(anAttr,"AttributeName")){
 580           _PTR(AttributeName) aName = anAttr;
 581           std::string aNameVal = aName->Value();
 582           anActor = SMESH_Actor::New(aVisualObj,theEntry,aNameVal.c_str(),theIsClear);
 583         }
 584
 585         SMESH::SMESH_GroupBase_var aGroup = SMESH::SMESH_GroupBase::_narrow( SMESH::SObjectToObject( aSObj ));
 586         if(!CORBA::is_nil(aGroup))
 587         {
 588           SALOMEDS::Color aColor = aGroup->GetColor();
 589           if( !( aColor.R > 0 || aColor.G > 0 || aColor.B > 0 ) )
 590           {
 591             int r = 0, g = 0, b = 0;
 592             SMESH::GetColor( "SMESH", "fill_color", r, g, b, QColor( 0, 170, 255 ) );
 593             aColor.R = (float)r / 255.0;
 594             aColor.G = (float)g / 255.0;
 595             aColor.B = (float)b / 255.0;
 596             aGroup->SetColor( aColor );
 597           }
 598           if( aGroup->GetType() == SMESH::NODE )
 599             anActor->SetNodeColor( aColor.R, aColor.G, aColor.B );
 600           else if( aGroup->GetType() == SMESH::EDGE )
 601             anActor->SetEdgeColor( aColor.R, aColor.G, aColor.B );
 602           else if( aGroup->GetType() == SMESH::ELEM0D )
 603             anActor->Set0DColor( aColor.R, aColor.G, aColor.B );
 604           else
 605             anActor->SetSufaceColor( aColor.R, aColor.G, aColor.B );
 606         }
 607       }
 608     }
 609     MESSAGE("CreateActor " << anActor);
 610     return anActor;
 611   }
 612
 613
 614   void DisplayActor( SUIT_ViewWindow *theWnd, SMESH_Actor* theActor){
 615     if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(theWnd)){
 616       try {
 617 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
 618         OCC_CATCH_SIGNALS;
 619 #endif
 620         MESSAGE("DisplayActor " << theActor);
 621         vtkWnd->AddActor(theActor);
 622         vtkWnd->Repaint();
 623       }
 624       catch (...) {
 625 #ifdef _DEBUG_
 626         MESSAGE ( "Exception in SMESHGUI_VTKUtils::DisplayActor()" );
 627 #endif
 628         OnVisuException();
 629       }
 630     }
 631   }
 632
 633
 634   void RemoveActor( SUIT_ViewWindow *theWnd, SMESH_Actor* theActor){
 635     if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(theWnd)){
 636         MESSAGE("RemoveActor " << theActor);
 637       vtkWnd->RemoveActor(theActor);
 638       if(theActor->hasIO()){
 639         Handle(SALOME_InteractiveObject) anIO = theActor->getIO();
 640         if(anIO->hasEntry()){
 641           std::string anEntry = anIO->getEntry();
 642           SalomeApp_Study* aStudy = dynamic_cast<SalomeApp_Study*>( vtkWnd->getViewManager()->study() );
 643           int aStudyId = aStudy->id();
 644           TVisualObjCont::key_type aKey(aStudyId,anEntry);
 645           VISUAL_OBJ_CONT.erase(aKey);
 646         }
 647       }
 648       theActor->Delete();
 649       vtkWnd->Repaint();
 650     }
 651   }
 652
 653   //================================================================================
 654   /*!
 655    * \brief Return true if there are no SMESH actors in a view
 656    */
 657   //================================================================================
 658
 659   bool noSmeshActors(SUIT_ViewWindow *theWnd)
 660   {
 661     if(SVTK_ViewWindow* aViewWindow = GetVtkViewWindow(theWnd)) {
 662       vtkRenderer *aRenderer = aViewWindow->getRenderer();
 663       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 664       vtkActorCollection *aCollection = aCopy.GetActors();
 665       aCollection->InitTraversal();
 666       while(vtkActor *anAct = aCollection->GetNextActor())
 667         if(dynamic_cast<SMESH_Actor*>(anAct))
 668           return false;
 669     }
 670     return true;
 671   }
 672
 673   bool UpdateView(SUIT_ViewWindow *theWnd, EDisplaing theAction, const char* theEntry)
 674   {
 675         //MESSAGE("UpdateView");
 676     bool OK = false;
 677     SVTK_ViewWindow* aViewWnd = GetVtkViewWindow(theWnd);
 678     if (!aViewWnd)
 679       return OK;
 680
 681     {
 682       OK = true;
 683       vtkRenderer *aRenderer = aViewWnd->getRenderer();
 684       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 685       vtkActorCollection *aCollection = aCopy.GetActors();
 686       aCollection->InitTraversal();
 687
 688       switch (theAction) {
 689       case eDisplayAll: {
 690         while (vtkActor *anAct = aCollection->GetNextActor()) {
 691           if (SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)) {
 692                 MESSAGE("--- display " << anActor);
 693             anActor->SetVisibility(true);
 694           }
 695         }
 696         break;
 697       }
 698       case eDisplayOnly:
 699       case eEraseAll: {
 700         //MESSAGE("---case eDisplayOnly");
 701         while (vtkActor *anAct = aCollection->GetNextActor()) {
 702           if (SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)) {
 703                 //MESSAGE("--- erase " << anActor);
 704             anActor->SetVisibility(false);
 705           }
 706         }
 707       }
 708       default: {
 709         if (SMESH_Actor *anActor = FindActorByEntry(theWnd,theEntry)) {
 710           switch (theAction) {
 711             case eDisplay:
 712             case eDisplayOnly:
 713                 //MESSAGE("--- display " << anActor);
 714               anActor->SetVisibility(true);
 715               if (theAction == eDisplayOnly) aRenderer->ResetCameraClippingRange();
 716               break;
 717             case eErase:
 718                 //MESSAGE("--- erase " << anActor);
 719               anActor->SetVisibility(false);
 720               break;
 721           }
 722         } else {
 723           switch (theAction) {
 724           case eDisplay:
 725           case eDisplayOnly:
 726             {
 727                 //MESSAGE("---");
 728               SalomeApp_Study* aStudy = dynamic_cast<SalomeApp_Study*>(theWnd->getViewManager()->study());
 729               _PTR(Study) aDocument = aStudy->studyDS();
 730               // Pass non-visual objects (hypotheses, etc.), return true in this case
 731               CORBA::Long anId = aDocument->StudyId();
 732               TVisualObjPtr aVisualObj;
 733               if ( (aVisualObj = GetVisualObj(anId,theEntry)) && aVisualObj->IsValid())
 734               {
 735                 if ((anActor = CreateActor(aDocument,theEntry,true))) {
 736                   bool needFitAll = noSmeshActors(theWnd); // fit for the first object only
 737                   DisplayActor(theWnd,anActor);
 738                   // FitAll(); - PAL16770(Display of a group performs an automatic fit all)
 739                   if (needFitAll) FitAll();
 740                 } else {
 741                   OK = false;
 742                 }
 743               }
 744               break;
 745             }
 746           }
 747         }
 748       }
 749       }
 750     }
 751     return OK;
 752   }
 753
 754
 755   bool UpdateView(EDisplaing theAction, const char* theEntry){
 756         //MESSAGE("UpdateView");
 757     SalomeApp_Study* aStudy = dynamic_cast< SalomeApp_Study* >( GetActiveStudy() );
 758     SalomeApp_Application* app = dynamic_cast< SalomeApp_Application* >( aStudy->application() );
 759     SUIT_ViewWindow *aWnd = app->activeViewManager()->getActiveView();
 760     return UpdateView(aWnd,theAction,theEntry);
 761   }
 762
 763   void UpdateView(){
 764     if(SVTK_ViewWindow* aWnd = SMESH::GetCurrentVtkView()){
 765       LightApp_SelectionMgr* mgr = SMESHGUI::selectionMgr();
 766       SALOME_ListIO selected; mgr->selectedObjects( selected );
 767
 768       if( selected.Extent() == 0){
 769         vtkRenderer* aRenderer = aWnd->getRenderer();
 770         VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 771         vtkActorCollection *aCollection = aCopy.GetActors();
 772         aCollection->InitTraversal();
 773         while(vtkActor *anAct = aCollection->GetNextActor()){
 774           if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
 775             if(anActor->hasIO())
 776               if (!Update(anActor->getIO(),anActor->GetVisibility()))
 777                 break; // avoid multiple warinings if visu failed
 778           }
 779         }
 780       }else{
 781         SALOME_ListIteratorOfListIO anIter( selected );
 782         for( ; anIter.More(); anIter.Next()){
 783           Handle(SALOME_InteractiveObject) anIO = anIter.Value();
 784           if ( !Update(anIO,true) )
 785             break; // avoid multiple warinings if visu failed
 786         }
 787       }
 788       RepaintCurrentView();
 789     }
 790   }
 791
 792
 793   bool Update(const Handle(SALOME_InteractiveObject)& theIO, bool theDisplay)
 794   {
 795         MESSAGE("Update");
 796     _PTR(Study) aStudy = GetActiveStudyDocument();
 797     CORBA::Long anId = aStudy->StudyId();
 798     if ( TVisualObjPtr aVisualObj = SMESH::GetVisualObj(anId,theIO->getEntry())) {
 799       if ( theDisplay )
 800         UpdateView(SMESH::eDisplay,theIO->getEntry());
 801       return true;
 802     }
 803     return false;
 804   }
 805
 806   bool UpdateNulData(const Handle(SALOME_InteractiveObject)& theIO, bool theDisplay)
 807   {
 808         MESSAGE("UpdateNulData");
 809     _PTR(Study) aStudy = GetActiveStudyDocument();
 810     CORBA::Long anId = aStudy->StudyId();
 811     if ( TVisualObjPtr aVisualObj = SMESH::GetVisualObj(anId,theIO->getEntry(), true)) {
 812       if ( theDisplay )
 813         UpdateView(SMESH::eDisplay,theIO->getEntry());
 814       return true;
 815     }
 816     return false;
 817   }
 818
 819   void UpdateSelectionProp( SMESHGUI* theModule ) {
 820     if( !theModule )
 821       return;
 822
 823     SalomeApp_Application* app = dynamic_cast< SalomeApp_Application* >( theModule->application() );
 824     if( !app )
 825     {
 826       MESSAGE( "UpdateSelectionProp: Application is null" );
 827       return;
 828     }
 829
 830     SUIT_ViewManager* vm = app->activeViewManager();
 831     if( !vm )
 832     {
 833       MESSAGE( "UpdateSelectionProp: View manager is null" );
 834       return;
 835     }
 836
 837     QVector<SUIT_ViewWindow*> views = vm->getViews();
 838
 839     SUIT_ResourceMgr* mgr = SMESH::GetResourceMgr( theModule );
 840     if( !mgr )
 841     {
 842       MESSAGE( "UpdateSelectionProp: Resource manager is null" );
 843       return;
 844     }
 845
 846     QColor aHiColor = mgr->colorValue( "SMESH", "selection_object_color", Qt::white ),
 847            aSelColor = mgr->colorValue( "SMESH", "selection_element_color", Qt::yellow ),
 848            aPreColor = mgr->colorValue( "SMESH", "highlight_color", Qt::cyan );
 849
 850     int SW = mgr->integerValue( "SMESH", "selection_width", 5 ),
 851         PW = mgr->integerValue( "SMESH", "highlight_width", 5 );
 852
 853     // adjust highlight_width to the width of mesh entities
 854     int aElem0DSize = mgr->integerValue("SMESH", "elem0d_size", 5);
 855     int aLineWidth  = mgr->integerValue("SMESH", "element_width", 1);
 856     int maxSize = aElem0DSize;
 857     if (aElem0DSize > maxSize) maxSize = aElem0DSize;
 858     if (aLineWidth > maxSize) maxSize = aLineWidth;
 859     if (PW < maxSize + 2) PW = maxSize + 2;
 860
 861     double SP1 = mgr->doubleValue( "SMESH", "selection_precision_node", 0.025 ),
 862            SP2 = mgr->doubleValue( "SMESH", "selection_precision_element", 0.001 ),
 863            SP3 = mgr->doubleValue( "SMESH", "selection_precision_object", 0.025 );
 864
 865     for ( int i=0, n=views.count(); i<n; i++ ){
 866       // update VTK viewer properties
 867       if(SVTK_ViewWindow* aVtkView = GetVtkViewWindow( views[i] )){
 868         // mesh element selection
 869         aVtkView->SetSelectionProp(aSelColor.red()/255.,
 870                                    aSelColor.green()/255.,
 871                                    aSelColor.blue()/255.,
 872                                    SW );
 873         // tolerances
 874         aVtkView->SetSelectionTolerance(SP1, SP2, SP3);
 875
 876         // pre-selection
 877         aVtkView->SetPreselectionProp(aPreColor.red()/255.,
 878                                       aPreColor.green()/255.,
 879                                       aPreColor.blue()/255.,
 880                                       PW);
 881         // update actors
 882         vtkRenderer* aRenderer = aVtkView->getRenderer();
 883         VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 884         vtkActorCollection *aCollection = aCopy.GetActors();
 885         aCollection->InitTraversal();
 886         while(vtkActor *anAct = aCollection->GetNextActor()){
 887           if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
 888             anActor->SetHighlightColor(aHiColor.red()/255.,
 889                                        aHiColor.green()/255.,
 890                                        aHiColor.blue()/255.);
 891             anActor->SetPreHighlightColor(aPreColor.red()/255.,
 892                                           aPreColor.green()/255.,
 893                                           aPreColor.blue()/255.);
 894           }
 895         }
 896       }
 897     }
 898   }
 899
 900
 901   //----------------------------------------------------------------------------
 902   SVTK_Selector*
 903   GetSelector(SUIT_ViewWindow *theWindow)
 904   {
 905     if(SVTK_ViewWindow* aWnd = GetVtkViewWindow(theWindow))
 906       return aWnd->GetSelector();
 907
 908     return NULL;
 909   }
 910
 911   void SetFilter(const Handle(VTKViewer_Filter)& theFilter,
 912                  SVTK_Selector* theSelector)
 913   {
 914     if (theSelector)
 915       theSelector->SetFilter(theFilter);
 916   }
 917
 918   Handle(VTKViewer_Filter) GetFilter(int theId, SVTK_Selector* theSelector)
 919   {
 920     return theSelector->GetFilter(theId);
 921   }
 922
 923   bool IsFilterPresent(int theId, SVTK_Selector* theSelector)
 924   {
 925     return theSelector->IsFilterPresent(theId);
 926   }
 927
 928   void RemoveFilter(int theId, SVTK_Selector* theSelector)
 929   {
 930     theSelector->RemoveFilter(theId);
 931   }
 932
 933   void RemoveFilters(SVTK_Selector* theSelector)
 934   {
 935     for ( int id = SMESH::NodeFilter; theSelector && id < SMESH::LastFilter; id++ )
 936       theSelector->RemoveFilter( id );
 937   }
 938
 939   bool IsValid(SALOME_Actor* theActor, int theCellId,
 940                SVTK_Selector* theSelector)
 941   {
 942     return theSelector->IsValid(theActor,theCellId);
 943   }
 944
 945
 946   //----------------------------------------------------------------------------
 947   void SetPointRepresentation(bool theIsVisible){
 948     if(SVTK_ViewWindow* aViewWindow = GetCurrentVtkView()){
 949       vtkRenderer *aRenderer = aViewWindow->getRenderer();
 950       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 951       vtkActorCollection *aCollection = aCopy.GetActors();
 952       aCollection->InitTraversal();
 953       while(vtkActor *anAct = aCollection->GetNextActor()){
 954         if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
 955           if(anActor->GetVisibility()){
 956             anActor->SetPointRepresentation(theIsVisible);
 957           }
 958         }
 959       }
 960       RepaintCurrentView();
 961     }
 962   }
 963
 964
 965   void SetPickable(SMESH_Actor* theActor){
 966     if(SVTK_ViewWindow* aWnd = GetCurrentVtkView()){
 967       int anIsAllPickable = (theActor == NULL);
 968       vtkRenderer *aRenderer = aWnd->getRenderer();
 969       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 970       vtkActorCollection *aCollection = aCopy.GetActors();
 971       aCollection->InitTraversal();
 972       while(vtkActor *anAct = aCollection->GetNextActor()){
 973         if(SALOME_Actor *anActor = dynamic_cast<SALOME_Actor*>(anAct)){
 974           if(anActor->GetVisibility()){
 975             anActor->SetPickable(anIsAllPickable);
 976           }
 977         }
 978       }
 979       if(theActor)
 980         theActor->SetPickable(!anIsAllPickable);
 981       RepaintCurrentView();
 982     }
 983   }
 984
 985
 986   //----------------------------------------------------------------------------
 987   int GetNameOfSelectedNodes(SVTK_Selector* theSelector,
 988                              const Handle(SALOME_InteractiveObject)& theIO,
 989                              QString& theName)
 990   {
 991     theName = "";
 992     TColStd_IndexedMapOfInteger aMapIndex;
 993     theSelector->GetIndex(theIO,aMapIndex);
 994
 995     for(int i = 1; i <= aMapIndex.Extent(); i++)
 996       theName += QString(" %1").arg(aMapIndex(i));
 997
 998     return aMapIndex.Extent();
 999   }
1000
1001   int GetNameOfSelectedElements(SVTK_Selector* theSelector,
1002                                 const Handle(SALOME_InteractiveObject)& theIO,
1003                                 QString& theName)
1004   {
1005     theName = "";
1006     TColStd_IndexedMapOfInteger aMapIndex;
1007     theSelector->GetIndex(theIO,aMapIndex);
1008
1009     typedef std::set<int> TIdContainer;
1010     TIdContainer anIdContainer;
1011     for( int i = 1; i <= aMapIndex.Extent(); i++)
1012       anIdContainer.insert(aMapIndex(i));
1013
1014     TIdContainer::const_iterator anIter = anIdContainer.begin();
1015     for( ; anIter != anIdContainer.end(); anIter++)
1016       theName += QString(" %1").arg(*anIter);
1017
1018     return aMapIndex.Extent();
1019   }
1020
1021
1022   int GetEdgeNodes(SVTK_Selector* theSelector,
1023                    const TVisualObjPtr& theVisualObject,
1024                    int& theId1,
1025                    int& theId2)
1026   {
1027     const SALOME_ListIO& selected = theSelector->StoredIObjects();
1028
1029     if ( selected.Extent() != 1 )
1030       return -1;
1031
1032     Handle(SALOME_InteractiveObject) anIO = selected.First();
1033     if ( anIO.IsNull() || !anIO->hasEntry() )
1034       return -1;
1035
1036     TColStd_IndexedMapOfInteger aMapIndex;
1037     theSelector->GetIndex( anIO, aMapIndex );
1038     if ( aMapIndex.Extent() != 2 )
1039       return -1;
1040
1041     int anObjId = -1, anEdgeNum = -1;
1042     for ( int i = 1; i <= aMapIndex.Extent(); i++ ) {
1043       int aVal = aMapIndex( i );
1044       if ( aVal > 0 )
1045         anObjId = aVal;
1046       else
1047         anEdgeNum = abs( aVal ) - 1;
1048     }
1049
1050     if ( anObjId == -1 || anEdgeNum == -1 )
1051       return -1;
1052
1053     return theVisualObject->GetEdgeNodes( anObjId, anEdgeNum, theId1, theId2 ) ? 1 : -1;
1054   }
1055
1056   //----------------------------------------------------------------------------
1057   int GetNameOfSelectedNodes(LightApp_SelectionMgr *theMgr,
1058                              const Handle(SALOME_InteractiveObject)& theIO,
1059                              QString& theName)
1060   {
1061     theName = "";
1062     if(theIO->hasEntry()){
1063       if(FindActorByEntry(theIO->getEntry())){
1064         TColStd_IndexedMapOfInteger aMapIndex;
1065         theMgr->GetIndexes(theIO,aMapIndex);
1066         for(int i = 1; i <= aMapIndex.Extent(); i++){
1067           theName += QString(" %1").arg(aMapIndex(i));
1068         }
1069         return aMapIndex.Extent();
1070       }
1071     }
1072     return -1;
1073   }
1074
1075   int GetNameOfSelectedNodes(LightApp_SelectionMgr *theMgr, QString& theName){
1076     theName = "";
1077     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1078     if(selected.Extent() == 1){
1079       Handle(SALOME_InteractiveObject) anIO = selected.First();
1080       return GetNameOfSelectedNodes(theMgr,anIO,theName);
1081     }
1082     return -1;
1083   }
1084
1085
1086   int GetNameOfSelectedElements(LightApp_SelectionMgr *theMgr,
1087                                 const Handle(SALOME_InteractiveObject)& theIO,
1088                                 QString& theName)
1089   {
1090     theName = "";
1091     if(theIO->hasEntry()){
1092       if(FindActorByEntry(theIO->getEntry())){
1093         TColStd_IndexedMapOfInteger aMapIndex;
1094         theMgr->GetIndexes(theIO,aMapIndex);
1095         typedef std::set<int> TIdContainer;
1096         TIdContainer anIdContainer;
1097         for( int i = 1; i <= aMapIndex.Extent(); i++)
1098           anIdContainer.insert(aMapIndex(i));
1099         TIdContainer::const_iterator anIter = anIdContainer.begin();
1100         for( ; anIter != anIdContainer.end(); anIter++){
1101           theName += QString(" %1").arg(*anIter);
1102         }
1103         return aMapIndex.Extent();
1104       }
1105     }
1106     return -1;
1107   }
1108
1109
1110   int GetNameOfSelectedElements(LightApp_SelectionMgr *theMgr, QString& theName)
1111   {
1112     theName = "";
1113     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1114
1115     if( selected.Extent() == 1){
1116       Handle(SALOME_InteractiveObject) anIO = selected.First();
1117       return GetNameOfSelectedElements(theMgr,anIO,theName);
1118     }
1119     return -1;
1120   }
1121
1122   int GetSelected(LightApp_SelectionMgr*       theMgr,
1123                   TColStd_IndexedMapOfInteger& theMap,
1124                   const bool                   theIsElement)
1125   {
1126     theMap.Clear();
1127     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1128
1129     if ( selected.Extent() == 1 )
1130     {
1131       Handle(SALOME_InteractiveObject) anIO = selected.First();
1132       if ( anIO->hasEntry() ) {
1133         theMgr->GetIndexes( anIO, theMap );
1134       }
1135     }
1136     return theMap.Extent();
1137   }
1138
1139
1140   int GetEdgeNodes( LightApp_SelectionMgr* theMgr, int& theId1, int& theId2 )
1141   {
1142     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1143
1144     if ( selected.Extent() != 1 )
1145       return -1;
1146
1147     Handle(SALOME_InteractiveObject) anIO = selected.First();
1148     if ( anIO.IsNull() || !anIO->hasEntry() )
1149       return -1;
1150
1151     SMESH_Actor *anActor = SMESH::FindActorByEntry( anIO->getEntry() );
1152     if ( anActor == 0 )
1153       return -1;
1154
1155     TColStd_IndexedMapOfInteger aMapIndex;
1156     theMgr->GetIndexes( anIO, aMapIndex );
1157     if ( aMapIndex.Extent() != 2 )
1158       return -1;
1159
1160     int anObjId = -1, anEdgeNum = -1;
1161     for ( int i = 1; i <= aMapIndex.Extent(); i++ ) {
1162       int aVal = aMapIndex( i );
1163       if ( aVal > 0 )
1164         anObjId = aVal;
1165       else
1166         anEdgeNum = abs( aVal );
1167     }
1168
1169     if ( anObjId == -1 || anEdgeNum == -1 )
1170       return -1;
1171
1172     return anActor->GetObject()->GetEdgeNodes( anObjId, anEdgeNum, theId1, theId2 ) ? 1 : -1;
1173   }
1174
1175   void SetControlsPrecision( const long theVal )
1176   {
1177     if( SVTK_ViewWindow* aWnd = SMESH::GetCurrentVtkView() )
1178     {
1179       vtkRenderer *aRenderer = aWnd->getRenderer();
1180       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
1181       vtkActorCollection *aCollection = aCopy.GetActors();
1182       aCollection->InitTraversal();
1183
1184       while ( vtkActor *anAct = aCollection->GetNextActor())
1185       {
1186         if ( SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>( anAct ) )
1187         {
1188           anActor->SetControlsPrecision( theVal );
1189           anActor->SetControlMode( anActor->GetControlMode() );
1190         }
1191       }
1192
1193     }
1194   }
1195 } // end of namespace SMESH