src/XGUI/XGUI_Viewer.cpp

   1 #include "XGUI_Viewer.h"
   2 #include "XGUI_MainWindow.h"
   3 #include "XGUI_ViewWindow.h"
   4 #include "XGUI_ViewPort.h"
   5 #include "XGUI_Workshop.h"
   6
   7 #include <SUIT_ResourceMgr.h>
   8
   9 #include <QMdiArea>
  10 #include <QMdiSubWindow>
  11 #include <QApplication>
  12 #include <QMouseEvent>
  13 #include <QMenu>
  14
  15 #include <V3d_View.hxx>
  16
  17 #include <Aspect_DisplayConnection.hxx>
  18 #include <Graphic3d.hxx>
  19 #include <Graphic3d_GraphicDriver.hxx>
  20 #include <Geom_Axis2Placement.hxx>
  21 #include <AIS_Drawer.hxx>
  22 #include <Prs3d_DatumAspect.hxx>
  23 #include <Prs3d_LineAspect.hxx>
  24 #include <V3d_View.hxx>
  25 #include <Visual3d_View.hxx>
  26 #include <AIS_ListOfInteractive.hxx>
  27 #include <AIS_ListIteratorOfListOfInteractive.hxx>
  28 #include <AIS_Shape.hxx>
  29
  30
  31 #ifdef WIN32
  32 #include <WNT_Window.hxx>
  33 #else
  34 #include <Xw_Window.hxx>
  35 #endif
  36
  37 XGUI_Viewer::InteractionStyle2StatesMap XGUI_Viewer::myStateMap;
  38 XGUI_Viewer::InteractionStyle2ButtonsMap XGUI_Viewer::myButtonMap;
  39 static bool isInitialized = false;
  40
  41 /*!
  42  Creates viewer 3d [ static ]
  43  */
  44 Handle(V3d_Viewer) CreateViewer(const Standard_ExtString name, const Standard_CString displayName,
  45                                 const Standard_CString domain, const Standard_Real viewSize,
  46                                 const V3d_TypeOfOrientation viewProjection,
  47                                 const Standard_Boolean computedMode,
  48                                 const Standard_Boolean defaultComputedMode)
  49 {
  50   static Handle(Graphic3d_GraphicDriver) aGraphicDriver;
  51   if (aGraphicDriver.IsNull()) {
  52     Handle(Aspect_DisplayConnection) aDisplayConnection;
  53 #ifndef WIN32
  54     aDisplayConnection = new Aspect_DisplayConnection( displayName );
  55 #else
  56     aDisplayConnection = new Aspect_DisplayConnection();
  57 #endif
  58     aGraphicDriver = Graphic3d::InitGraphicDriver(aDisplayConnection);
  59   }
  60
  61   return new V3d_Viewer(aGraphicDriver, name, domain, viewSize, viewProjection, Quantity_NOC_GRAY30,
  62                         V3d_ZBUFFER, V3d_GOURAUD, V3d_WAIT, computedMode, defaultComputedMode,
  63                         V3d_TEX_NONE);
  64 }
  65
  66 // VSR: Uncomment below line to allow texture background support in OCC viewer
  67 #define OCC_ENABLE_TEXTURED_BACKGROUND
  68
  69 /*!
  70  Get data for supported background modes: gradient types, identifiers and supported image formats
  71  */
  72 QString XGUI_Viewer::backgroundData(QStringList& gradList, QIntList& idList, QIntList& txtList)
  73 {
  74   gradList << tr("Horizontal gradient") << tr("Vertical gradient")
  75       << tr("First diagonal gradient") << tr("Second diagonal gradient")
  76       << tr("First corner gradient") << tr("Second corner gradient")
  77       << tr("Third corner gradient") << tr("Fourth corner gradient");
  78   idList << XGUI::HorizontalGradient << XGUI::VerticalGradient << XGUI::Diagonal1Gradient
  79       << XGUI::Diagonal2Gradient << XGUI::Corner1Gradient << XGUI::Corner2Gradient
  80       << XGUI::Corner3Gradient << XGUI::Corner4Gradient;
  81 #ifdef OCC_ENABLE_TEXTURED_BACKGROUND
  82   txtList << XGUI::CenterTexture << XGUI::TileTexture << XGUI::StretchTexture;
  83 #endif
  84   return tr("Image files (*.bmp *.gif *.pix *.xwd *.rgb *.rs)");
  85 }
  86
  87 XGUI_Viewer::XGUI_Viewer(XGUI_MainWindow* theParent, bool DisplayTrihedron)
  88     : QObject(theParent),
  89     myMainWindow(theParent),
  90     myPreselectionEnabled(true),
  91     mySelectionEnabled(true),
  92     myMultiSelectionEnabled(true),
  93     myIsRelative(true),
  94     myInteractionStyle(XGUI::STANDARD),
  95     myTrihedronSize(100),
  96     myActiveView(0),
  97     myWndIdCount(0)
  98 {
  99   if (!isInitialized) {
 100     isInitialized = true;
 101
 102     // standard interaction style
 103     XGUI_Viewer::myStateMap[XGUI::STANDARD][XGUI::ZOOM] = Qt::ControlModifier;
 104     XGUI_Viewer::myButtonMap[XGUI::STANDARD][XGUI::ZOOM] = Qt::LeftButton;
 105
 106     XGUI_Viewer::myStateMap[XGUI::STANDARD][XGUI::PAN] = Qt::ControlModifier;
 107     XGUI_Viewer::myButtonMap[XGUI::STANDARD][XGUI::PAN] = Qt::MidButton;
 108
 109     XGUI_Viewer::myStateMap[XGUI::STANDARD][XGUI::ROTATE] = Qt::ControlModifier;
 110     XGUI_Viewer::myButtonMap[XGUI::STANDARD][XGUI::ROTATE] = Qt::RightButton;
 111
 112     XGUI_Viewer::myStateMap[XGUI::STANDARD][XGUI::FIT_AREA] = Qt::ControlModifier;
 113     XGUI_Viewer::myButtonMap[XGUI::STANDARD][XGUI::FIT_AREA] = Qt::RightButton;
 114
 115     // "key free" interaction style
 116     XGUI_Viewer::myStateMap[XGUI::KEY_FREE][XGUI::ZOOM] = Qt::NoModifier;
 117     XGUI_Viewer::myButtonMap[XGUI::KEY_FREE][XGUI::ZOOM] = Qt::RightButton;
 118
 119     XGUI_Viewer::myStateMap[XGUI::KEY_FREE][XGUI::PAN] = Qt::NoModifier;
 120     XGUI_Viewer::myButtonMap[XGUI::KEY_FREE][XGUI::PAN] = Qt::MidButton;
 121
 122     XGUI_Viewer::myStateMap[XGUI::KEY_FREE][XGUI::ROTATE] = Qt::NoModifier;
 123     XGUI_Viewer::myButtonMap[XGUI::KEY_FREE][XGUI::ROTATE] = Qt::LeftButton;
 124
 125     XGUI_Viewer::myStateMap[XGUI::KEY_FREE][XGUI::FIT_AREA] = Qt::NoModifier; // unused
 126     XGUI_Viewer::myButtonMap[XGUI::KEY_FREE][XGUI::FIT_AREA] = Qt::NoButton; // unused
 127   }
 128
 129   // init CasCade viewers
 130   myV3dViewer = CreateViewer(TCollection_ExtendedString("Viewer3d").ToExtString(), "", "", 1000.0,
 131                              V3d_XposYnegZpos, Standard_True, Standard_True);
 132   myV3dViewer->SetDefaultLights();
 133
 134   // init selector
 135   myAISContext = new AIS_InteractiveContext(myV3dViewer);
 136   myAISContext->SelectionColor(Quantity_NOC_WHITE);
 137
 138   // display isoline on planar faces (box for ex.)
 139   myAISContext->IsoOnPlane(true);
 140
 141   if (DisplayTrihedron) {
 142     Handle(Geom_Axis2Placement) anAxis = new Geom_Axis2Placement(gp::XOY());
 143     myTrihedron = new AIS_Trihedron(anAxis);
 144     myTrihedron->SetInfiniteState( Standard_True);
 145
 146     Quantity_Color Col(193 / 255., 205 / 255., 193 / 255., Quantity_TOC_RGB);
 147     myTrihedron->SetArrowColor(Col.Name());
 148     myTrihedron->SetSize(myTrihedronSize);
 149     Handle(AIS_Drawer) drawer = myTrihedron->Attributes();
 150     if (drawer->HasDatumAspect()) {
 151       Handle(Prs3d_DatumAspect) daspect = drawer->DatumAspect();
 152       daspect->FirstAxisAspect()->SetColor(Quantity_Color(1.0, 0.0, 0.0, Quantity_TOC_RGB));
 153       daspect->SecondAxisAspect()->SetColor(Quantity_Color(0.0, 1.0, 0.0, Quantity_TOC_RGB));
 154       daspect->ThirdAxisAspect()->SetColor(Quantity_Color(0.0, 0.0, 1.0, Quantity_TOC_RGB));
 155     }
 156   }
 157   // set zooming style to standard
 158   //myZoomingStyle = 0;
 159
 160   QMdiArea* aMDI = myMainWindow->mdiArea();
 161   connect(aMDI, SIGNAL(subWindowActivated(QMdiSubWindow*)), this, SLOT(onWindowActivated(QMdiSubWindow*)));
 162
 163 }
 164
 165 XGUI_Viewer::~XGUI_Viewer(void)
 166 {
 167   myAISContext.Nullify();
 168   myV3dViewer.Nullify();
 169 }
 170
 171 QMdiSubWindow* XGUI_Viewer::createView(V3d_TypeOfView theType)
 172 {
 173   // create view frame
 174   XGUI_ViewWindow* view = new XGUI_ViewWindow(this, theType);
 175   // get main view window (created by view frame)
 176   //OCCViewer_ViewWindow* vw = view->getView(OCCViewer_ViewFrame::MAIN_VIEW);
 177   // initialize main view window
 178   //initView( vw );
 179   // set default background for view window
 180   //vw->setBackground( background(0) ); // 0 means MAIN_VIEW (other views are not yet created here)
 181   // connect signal from viewport
 182   //connect(view->viewPort(), SIGNAL(vpClosed()), this, SLOT(onViewClosed()));
 183     //connect(view->viewPort(), SIGNAL(vpMapped()), this, SLOT(onViewMapped()));
 184   if (myViews.size() == 0)
 185     setTrihedronShown(true);
 186
 187   Qtx::BackgroundData aBk = XGUI_Workshop::resourceMgr()->backgroundValue("Viewer", "background");
 188   view->setBackground(aBk);
 189   view->updateEnabledDrawMode();
 190
 191   QMdiArea* aMDI = myMainWindow->mdiArea();
 192   QMdiSubWindow* aWnd = aMDI->addSubWindow(view, Qt::FramelessWindowHint);
 193   addView(aWnd);
 194   aWnd->setGeometry(0, 0, aMDI->width() / 2, aMDI->height() / 2);
 195   aWnd->show();
 196   aWnd->setWindowTitle(QString("Viewer #%1").arg(++myWndIdCount));
 197   emit viewCreated(view);
 198   return aWnd;
 199 }
 200
 201 XGUI_ViewWindow* XGUI_Viewer::activeViewWindow() const
 202 {
 203   if (myActiveView)
 204     return dynamic_cast<XGUI_ViewWindow*>(myActiveView->widget());
 205   return 0;
 206 }
 207
 208 void XGUI_Viewer::getSelectedObjects(AIS_ListOfInteractive& theList)
 209 {
 210   theList.Clear();
 211   for (myAISContext->InitSelected(); myAISContext->MoreSelected(); myAISContext->NextSelected())
 212     theList.Append(myAISContext->SelectedInteractive());
 213 }
 214
 215 void XGUI_Viewer::getSelectedShapes(NCollection_List<TopoDS_Shape>& theList)
 216 {
 217   Handle(AIS_InteractiveContext) ic = AISContext();
 218
 219   for (ic->InitSelected(); ic->MoreSelected(); ic->NextSelected()) {
 220     TopoDS_Shape aShape = ic->SelectedShape();
 221     if (!aShape.IsNull())
 222       theList.Append(aShape);
 223   }
 224 }
 225
 226 void XGUI_Viewer::setObjectsSelected(const AIS_ListOfInteractive& theList)
 227 {
 228   AIS_ListIteratorOfListOfInteractive aIt;
 229   for (aIt.Initialize(theList); aIt.More(); aIt.Next())
 230     myAISContext->AddOrRemoveSelected(aIt.Value(), false);
 231   myAISContext->UpdateCurrentViewer();
 232 }
 233
 234 /*! Sets hot button
 235  *\param theOper - hot operation
 236  *\param theState - adding state to state map operations.
 237  *\param theButton - adding state to button map operations.
 238  */
 239 void XGUI_Viewer::setHotButton(XGUI::InteractionStyle theInteractionStyle,
 240                                XGUI::HotOperation theOper, Qt::KeyboardModifiers theState,
 241                                Qt::MouseButtons theButton)
 242 {
 243   myStateMap[theInteractionStyle][theOper] = theState;
 244   myButtonMap[theInteractionStyle][theOper] = theButton;
 245 }
 246
 247 /*! Gets hot button for operation \a theOper.
 248  *\param theOper - input hot operation
 249  *\param theState - output state from state map operations.
 250  *\param theButton - output state from button map operations.
 251  */
 252 void XGUI_Viewer::getHotButton(XGUI::InteractionStyle theInteractionStyle,
 253                                XGUI::HotOperation theOper, Qt::KeyboardModifiers& theState,
 254                                Qt::MouseButtons& theButton)
 255 {
 256   theState = myStateMap[theInteractionStyle][theOper];
 257   theButton = myButtonMap[theInteractionStyle][theOper];
 258 }
 259
 260 /*!
 261  Changes visibility of trihedron to opposite
 262  */
 263 void XGUI_Viewer::toggleTrihedron()
 264 {
 265   setTrihedronShown(!isTrihedronVisible());
 266 }
 267
 268 /*!
 269  \return true if trihedron is visible
 270  */
 271 bool XGUI_Viewer::isTrihedronVisible() const
 272 {
 273   return !myTrihedron.IsNull() && !myAISContext.IsNull() && myAISContext->IsDisplayed(myTrihedron);
 274 }
 275
 276 /*!
 277  Sets visibility state of trihedron
 278  \param on - new state
 279  */
 280
 281 void XGUI_Viewer::setTrihedronShown(bool on)
 282 {
 283   if (myTrihedron.IsNull())
 284     return;
 285
 286   if (on) {
 287     myAISContext->Display(myTrihedron);
 288     myAISContext->Deactivate(myTrihedron);
 289   } else {
 290     myAISContext->Erase(myTrihedron);
 291   }
 292 }
 293
 294 /*!
 295  \return trihedron size
 296  */
 297 double XGUI_Viewer::trihedronSize() const
 298 {
 299   double sz = 0;
 300   if (!myTrihedron.IsNull())
 301     sz = myTrihedron->Size();
 302   return sz;
 303 }
 304
 305 /*!
 306  Changes trihedron size
 307  \param sz - new size
 308  */
 309 void XGUI_Viewer::setTrihedronSize(const double sz, bool isRelative)
 310 {
 311   if (myTrihedronSize != sz || isRelative != myIsRelative) {
 312     myTrihedronSize = sz;
 313     myIsRelative = isRelative;
 314     updateTrihedron();
 315   }
 316 }
 317
 318 /*!
 319  * Update the size of the trihedron
 320  */
 321 void XGUI_Viewer::updateTrihedron()
 322 {
 323   if (myTrihedron.IsNull())
 324     return;
 325
 326   if (myIsRelative) {
 327     double newSz, oldSz;
 328
 329     if (computeTrihedronSize(newSz, oldSz))
 330       myTrihedron->SetSize(newSz);
 331
 332   } else if (myTrihedron->Size() != myTrihedronSize) {
 333     myTrihedron->SetSize(myTrihedronSize);
 334   }
 335 }
 336
 337 /*!
 338  Get new and current trihedron size corresponding to the current model size
 339  */
 340 bool XGUI_Viewer::computeTrihedronSize(double& theNewSize, double& theSize)
 341 {
 342   theNewSize = 100;
 343   theSize = 100;
 344
 345   //SRN: BUG IPAL8996, a usage of method ActiveView without an initialization
 346   Handle(V3d_Viewer) viewer = v3dViewer();
 347   viewer->InitActiveViews();
 348   if (!viewer->MoreActiveViews())
 349     return false;
 350
 351   Handle(V3d_View) view3d = viewer->ActiveView();
 352   //SRN: END of fix
 353
 354   if (view3d.IsNull())
 355     return false;
 356
 357   double Xmin = 0, Ymin = 0, Zmin = 0, Xmax = 0, Ymax = 0, Zmax = 0;
 358   double aMaxSide;
 359
 360   view3d->View()->MinMaxValues(Xmin, Ymin, Zmin, Xmax, Ymax, Zmax);
 361
 362   if (Xmin == RealFirst() || Ymin == RealFirst() || Zmin == RealFirst() || Xmax == RealLast()
 363       || Ymax == RealLast() || Zmax == RealLast())
 364     return false;
 365
 366   aMaxSide = Xmax - Xmin;
 367   if (aMaxSide < Ymax - Ymin)
 368     aMaxSide = Ymax - Ymin;
 369   if (aMaxSide < Zmax - Zmin)
 370     aMaxSide = Zmax - Zmin;
 371
 372   // IPAL21687
 373   // The boundary box of the view may be initialized but nullified
 374   // (case of infinite objects)
 375   if (aMaxSide < Precision::Confusion())
 376     return false;
 377
 378   static float EPS = (float)5.0E-3;
 379   theSize = trihedron()->Size();
 380   //theNewSize = aMaxSide*aSizeInPercents / 100.0;
 381
 382   return fabs(theNewSize - theSize) > theSize * EPS || fabs(theNewSize - theSize) > theNewSize * EPS;
 383 }
 384
 385 void XGUI_Viewer::onViewClosed(QMdiSubWindow* theView)
 386 {
 387   if ( !theView )
 388     return;
 389
 390   emit deleteView( static_cast<XGUI_ViewWindow*>(theView->widget()) );
 391   removeView( theView );
 392
 393   // if this is last view
 394   if (myViews.size() == 0) {
 395     Standard_Integer aViewsNb = 0;
 396     for ( myV3dViewer->InitActiveViews(); myV3dViewer->MoreActiveViews(); myV3dViewer->NextActiveViews())
 397       ++aViewsNb;
 398     if ( aViewsNb < 2 ) {
 399       //clean up presentations before last view is closed
 400       myAISContext->RemoveAll(Standard_False);
 401     }
 402   }
 403 }
 404
 405 /*!Remove view window \a theView from view manager.
 406  *And close the last view, if it has \a theView.
 407 */
 408 void XGUI_Viewer::removeView( QMdiSubWindow* theView )
 409 {
 410     XGUI_ViewWindow* aWindow = static_cast<XGUI_ViewWindow*>(theView->widget());
 411
 412     aWindow->disconnect( this );
 413     myViews.removeAt( myViews.indexOf( theView ) );
 414     if ( myActiveView == theView )
 415         myActiveView = 0;
 416     if ( myViews.size() == 0 )
 417         emit lastViewClosed();
 418 }
 419
 420
 421 /*void XGUI_Viewer::onViewMapped()
 422 {
 423   setTrihedronShown(true);
 424 }*/
 425
 426
 427 void XGUI_Viewer::addView(QMdiSubWindow* theView)
 428 {
 429     XGUI_ViewWindow* aWindow = dynamic_cast<XGUI_ViewWindow*>(theView->widget());
 430
 431     connect(aWindow, SIGNAL(closed(QMdiSubWindow*)),
 432             this,    SLOT(onViewClosed(QMdiSubWindow*)));
 433
 434     connect(aWindow, SIGNAL(tryClosing(XGUI_ViewWindow*)),
 435             this,    SIGNAL(tryCloseView(XGUI_ViewWindow*)));
 436
 437     connect(aWindow, SIGNAL(mousePressed(XGUI_ViewWindow*, QMouseEvent*)),
 438             this,    SLOT(onMousePressed(XGUI_ViewWindow*, QMouseEvent*)));
 439
 440     connect(aWindow, SIGNAL(mouseDoubleClicked(XGUI_ViewWindow*, QMouseEvent*)),
 441             this,    SIGNAL(mouseDoubleClick(XGUI_ViewWindow*, QMouseEvent*)));
 442
 443     connect(aWindow, SIGNAL(mouseMoving(XGUI_ViewWindow*, QMouseEvent*)),
 444             this,    SIGNAL(mouseMove(XGUI_ViewWindow*, QMouseEvent*)));
 445
 446     connect(aWindow, SIGNAL(keyPressed(XGUI_ViewWindow*, QKeyEvent*)),
 447             this,    SIGNAL(keyPress(XGUI_ViewWindow*, QKeyEvent*)));
 448
 449     connect(aWindow, SIGNAL(keyReleased(XGUI_ViewWindow*, QKeyEvent*)),
 450             this,    SIGNAL(keyRelease(XGUI_ViewWindow*, QKeyEvent*)));
 451
 452     //connect(aWindow, SIGNAL(contextMenuRequested( QContextMenuEvent* )),
 453     //        this,    SLOT  (onContextMenuRequested( QContextMenuEvent* )));
 454     connect(aWindow, SIGNAL( contextMenuRequested(QContextMenuEvent*) ),
 455             this, SIGNAL( contextMenuRequested(QContextMenuEvent*) ) );
 456
 457     connect(aWindow, SIGNAL(mouseMoving(XGUI_ViewWindow*, QMouseEvent*)),
 458             this, SLOT(onMouseMove(XGUI_ViewWindow*, QMouseEvent*)));
 459
 460     connect(aWindow, SIGNAL(mouseReleased(XGUI_ViewWindow*, QMouseEvent*)),
 461             this, SLOT(onMouseReleased(XGUI_ViewWindow*, QMouseEvent*)));
 462
 463     myViews.append(theView);
 464 }
 465
 466 /*!
 467     Emit activated for view \a view.
 468 */
 469 void XGUI_Viewer::onWindowActivated(QMdiSubWindow* view)
 470 {
 471   if (view && (view != myActiveView) && (!view->isMinimized())) {
 472     myActiveView = view;
 473     ((XGUI_ViewWindow*)myActiveView->widget())->windowActivated();
 474     QList<QMdiSubWindow*>::iterator aIt;
 475     for (aIt = myViews.begin(); aIt != myViews.end(); ++aIt) {
 476       if ((*aIt) != myActiveView) {
 477         ((XGUI_ViewWindow*)(*aIt)->widget())->windowDeactivated();
 478       }
 479     }
 480   }
 481 }
 482
 483
 484 void XGUI_Viewer::onWindowMinimized(QMdiSubWindow* theWnd)
 485 {
 486   if (myActiveView == theWnd) {
 487     myActiveView = 0;
 488     QList<QMdiSubWindow*>::iterator aIt;
 489     for (aIt = myViews.begin(); aIt != myViews.end(); ++aIt) {
 490       if (!(*aIt)->widget()->isMinimized()) {
 491         (*aIt)->raise();
 492         onWindowActivated(*aIt);
 493         break;
 494       }
 495     }
 496   }
 497 }
 498
 499 /*!
 500   SLOT: called on mouse button press, stores current mouse position as start point for transformations
 501 */
 502 void XGUI_Viewer::onMousePressed(XGUI_ViewWindow* theWindow, QMouseEvent* theEvent)
 503 {
 504   myStartPnt.setX(theEvent->x()); myStartPnt.setY(theEvent->y());
 505   emit mousePress(theWindow, theEvent);
 506 }
 507
 508 /*!
 509   SLOT: called on mouse move, processes hilighting
 510 */
 511 void XGUI_Viewer::onMouseMove(XGUI_ViewWindow* theWindow, QMouseEvent* theEvent)
 512 {
 513   myCurPnt.setX(theEvent->x()); myCurPnt.setY(theEvent->y());
 514   if (!mySelectionEnabled) return;
 515
 516   Handle(V3d_View) aView3d = theWindow->viewPort()->getView();
 517   if ( !aView3d.IsNull() ) {
 518     myAISContext->MoveTo(theEvent->x(), theEvent->y(), aView3d);
 519   }
 520 }
 521
 522 /*!
 523   SLOT: called on mouse button release, finishes selection
 524 */
 525 void XGUI_Viewer::onMouseReleased(XGUI_ViewWindow* theWindow, QMouseEvent* theEvent)
 526 {
 527   if (!mySelectionEnabled || theEvent->button() != Qt::LeftButton) {
 528     emit mouseRelease(theWindow, theEvent);
 529     return;
 530   }
 531
 532   myEndPnt.setX(theEvent->x()); myEndPnt.setY(theEvent->y());
 533   bool aHasShift = (theEvent->modifiers() & Qt::ShiftModifier);
 534
 535   //if (!aHasShift)
 536   //  emit deselection();
 537
 538   if (myStartPnt == myEndPnt) {
 539     // the MoveTo is necessary for the second click in the same point. Otherwise the selection is lost.
 540     Handle(V3d_View) aView3d = theWindow->viewPort()->getView();
 541     if ( !aView3d.IsNull() ) {
 542       myAISContext->MoveTo(theEvent->x(), theEvent->y(), aView3d);
 543     }
 544     if (aHasShift && myMultiSelectionEnabled)
 545       myAISContext->ShiftSelect();
 546     else
 547       myAISContext->Select();
 548   } else {
 549     if (aHasShift && myMultiSelectionEnabled)
 550       myAISContext->ShiftSelect(myStartPnt.x(), myStartPnt.y(),
 551                                 myEndPnt.x(), myEndPnt.y(),
 552                                 theWindow->viewPort()->getView(), false );
 553     else
 554       myAISContext->Select(myStartPnt.x(), myStartPnt.y(),
 555                            myEndPnt.x(), myEndPnt.y(),
 556                            theWindow->viewPort()->getView(), false );
 557
 558     int Nb = myAISContext->NbSelected();
 559     if( Nb>1 && !myMultiSelectionEnabled ) {
 560       myAISContext->InitSelected();
 561       Handle( SelectMgr_EntityOwner ) anOwner = myAISContext->SelectedOwner();
 562       if( !anOwner.IsNull() ) {
 563         myAISContext->ClearSelected( Standard_False );
 564         myAISContext->AddOrRemoveSelected( anOwner, Standard_False );
 565       }
 566     }
 567
 568     myAISContext->UpdateCurrentViewer();
 569   }
 570   emit mouseRelease(theWindow, theEvent);
 571   emit selectionChanged();
 572 }
 573
 574 //******************************************************
 575 void XGUI_Viewer::setMultiSelectionEnabled(bool toEnable)
 576 {
 577   myMultiSelectionEnabled = toEnable;
 578   updateViewsDrawMode();
 579 }
 580
 581 //******************************************************
 582 void XGUI_Viewer::setSelectionEnabled(bool toEnable)
 583 {
 584   mySelectionEnabled = toEnable;
 585   updateViewsDrawMode();
 586 }
 587
 588 //******************************************************
 589 void XGUI_Viewer::updateViewsDrawMode() const
 590 {
 591   foreach(QMdiSubWindow* aWnd, myViews){
 592     XGUI_ViewWindow* aView = static_cast<XGUI_ViewWindow*>(aWnd->widget());
 593     aView->updateEnabledDrawMode();
 594   }
 595 }
 596
 597 //******************************************************
 598 //void XGUI_Viewer::onContextMenuRequested(QContextMenuEvent* theEvent)
 599 //{
 600 //  XGUI_ViewWindow* aWnd = dynamic_cast<XGUI_ViewWindow*>(sender());
 601 //  if (!aWnd) return;
 602 //
 603 //  QMenu aMenu;
 604 //
 605 //  // Include Viewer actions
 606 //  if (myActions.size() > 0) {
 607 //    aMenu.addActions(myActions);
 608 //    aMenu.addSeparator();
 609 //  }
 610 //  if (aWnd->actions().size() > 0) {
 611 //    aMenu.addActions(aWnd->actions());
 612 //    aMenu.addSeparator();
 613 //  }
 614 //
 615 //  QMdiArea* aMDI = myMainWindow->mdiArea();
 616 //  if (aMenu.actions().size() > 0) {
 617 //    QMenu* aSubMenu = aMenu.addMenu(tr("Windows"));
 618 //    aSubMenu->addActions(aMDI->actions());
 619 //  } else {
 620 //    aMenu.addActions(aMDI->actions());
 621 //  }
 622 //  aMenu.exec(theEvent->globalPos());
 623 //}