src/SVTK/SVTK_RenderWindowInteractor.cxx

   1 // Copyright (C) 2007-2016  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, or (at your option) any later version.
  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 //  SALOME VTKViewer : build VTK viewer into Salome desktop
  24 //  File   :
  25 //  Author :
  26
  27 #include "SVTK_RenderWindowInteractor.h"
  28
  29 #include "SVTK_InteractorStyle.h"
  30 #include "SVTK_Renderer.h"
  31 #include "SVTK_Functor.h"
  32 #include "SALOME_Actor.h"
  33
  34 // QT Includes
  35 // Put Qt includes before the X11 includes which #define the symbol None
  36 // (see SVTK_SpaceMouse.h) to avoid the compilation error.
  37 #if !defined(WIN32) && !defined(__APPLE__)
  38 #if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
  39 #include <xcb/xcb.h>
  40 #endif
  41 #include <QX11Info>
  42 #endif
  43 #include <QMouseEvent>
  44
  45 #include "SVTK_SpaceMouse.h"
  46 #include "SVTK_Event.h"
  47
  48 #include "VTKViewer_Algorithm.h"
  49
  50 // VTK Includes
  51 #include <vtkObjectFactory.h>
  52 #include <vtkRendererCollection.h>
  53 #include <vtkRenderWindow.h>
  54 #include <vtkGenericRenderWindowInteractor.h>
  55 #include <vtkCallbackCommand.h>
  56 #include <vtkCommand.h>
  57 #include <vtkPicker.h>
  58 #include <vtkCamera.h>
  59
  60 static bool GENERATE_SUIT_EVENTS = true;
  61 static bool FOCUS_UNDER_MOUSE = false;
  62
  63 // workaround about the bug in vtkImplicitPlaneWidget class
  64 // that eats mouse button release event
  65 // causing clipping plane preview in SMESH sticking up
  66 #define Fix_Of_vtkImplicitPlaneWidget_bug
  67
  68 /*!
  69   Constructor
  70 */
  71 QVTK_RenderWindowInteractor
  72 ::QVTK_RenderWindowInteractor(QWidget* theParent,
  73                               const char* theName):
  74   QWidget(theParent),
  75   myRenderWindow(vtkRenderWindow::New())
  76 {
  77   setAttribute( Qt::WA_PaintOnScreen );
  78   setAttribute( Qt::WA_NoSystemBackground );
  79
  80   setObjectName(theName);
  81
  82   setMouseTracking(true);
  83
  84   myRenderWindow->Delete();
  85   myRenderWindow->DoubleBufferOn();
  86
  87 #if !defined WIN32 && !defined __APPLE__
  88   myRenderWindow->SetDisplayId((void*)QX11Info::display());
  89 #endif
  90   myRenderWindow->SetWindowId((void*)winId());
  91 }
  92
  93 /*!
  94   To initialize by vtkGenericRenderWindowInteractor instance
  95 */
  96 void
  97 QVTK_RenderWindowInteractor
  98 ::Initialize(vtkGenericRenderWindowInteractor* theDevice)
  99 {
 100   if ( GetDevice() )
 101     myDevice->SetRenderWindow( NULL );
 102
 103   myDevice = theDevice;
 104
 105   if ( theDevice )
 106     theDevice->SetRenderWindow( getRenderWindow() );
 107 }
 108
 109 /*!
 110   Destructor
 111 */
 112 QVTK_RenderWindowInteractor
 113 ::~QVTK_RenderWindowInteractor()
 114 {
 115 #if !defined WIN32 && !defined __APPLE__
 116 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 117   SVTK_SpaceMouseX* aSpaceMouse = SVTK_SpaceMouseX::getInstance();
 118   if ( aSpaceMouse && aSpaceMouse->isSpaceMouseOn() )
 119     aSpaceMouse->close( QX11Info::display() );
 120 #else
 121   SVTK_SpaceMouseXCB* aSpaceMouse = SVTK_SpaceMouseXCB::getInstance();
 122   if ( aSpaceMouse && aSpaceMouse->isSpaceMouseOn() )
 123     aSpaceMouse->close( QX11Info::connection() );
 124 #endif
 125 #endif
 126 }
 127
 128
 129 /*!
 130   \return corresponding render window interactor
 131 */
 132 vtkGenericRenderWindowInteractor*
 133 QVTK_RenderWindowInteractor
 134 ::GetDevice()
 135 {
 136   return myDevice.GetPointer();
 137 }
 138
 139 /*!
 140   \return corresponding render window
 141 */
 142 vtkRenderWindow*
 143 QVTK_RenderWindowInteractor
 144 ::getRenderWindow()
 145 {
 146   return myRenderWindow.GetPointer();
 147 }
 148
 149 /*!
 150   Just to simplify usage of its device (vtkGenericRenderWindowInteractor)
 151 */
 152 void
 153 QVTK_RenderWindowInteractor
 154 ::InvokeEvent(unsigned long theEvent, void* theCallData)
 155 {
 156   GetDevice()->InvokeEvent(theEvent,theCallData);
 157 }
 158
 159 /*!
 160   Get paint engine for the scene
 161 */
 162 QPaintEngine* QVTK_RenderWindowInteractor::paintEngine() const
 163 {
 164   return 0;
 165 }
 166
 167 /*!
 168   Need for initial contents display on Win32
 169 */
 170 void
 171 QVTK_RenderWindowInteractor
 172 ::show()
 173 {
 174   QWidget::show();
 175   update(); // needed for initial contents display on Win32
 176 }
 177
 178 /*!
 179   To implement final initialization, just before the widget is displayed
 180 */
 181 void
 182 QVTK_RenderWindowInteractor
 183 ::polish()
 184 {
 185   // Final initialization just before the widget is displayed
 186   GetDevice()->SetSize(width(),height());
 187   if(!GetDevice()->GetInitialized() && GetDevice()->GetRenderWindow()){
 188     GetDevice()->Initialize();
 189     GetDevice()->ConfigureEvent();
 190   }
 191 }
 192
 193 /*!
 194   To adjust widget and vtkRenderWindow size
 195 */
 196 void
 197 QVTK_RenderWindowInteractor
 198 ::resize(int w, int h)
 199 {
 200   GetDevice()->UpdateSize(w,h);
 201 }
 202
 203 /*!
 204   Custom paint event handler
 205 */
 206 void
 207 QVTK_RenderWindowInteractor
 208 ::paintEvent( QPaintEvent* theEvent )
 209 {
 210   GetDevice()->CreateTimer(VTKI_TIMER_FIRST);
 211 }
 212
 213
 214 /*!
 215   Custom resize event handler
 216 */
 217 void
 218 QVTK_RenderWindowInteractor
 219 ::resizeEvent( QResizeEvent* theEvent )
 220 {
 221   int* aSize = getRenderWindow()->GetSize();
 222   int aWidth = aSize[0];
 223   int aHeight = aSize[1];
 224
 225   GetDevice()->UpdateSize(width(),height());
 226
 227   if(isVisible() && aWidth && aHeight){
 228     if( aWidth != width() || aHeight != height() ) {
 229       vtkRendererCollection * aRenderers = getRenderWindow()->GetRenderers();
 230       aRenderers->InitTraversal();
 231       double aCoeff = 1.0;
 232       if(vtkRenderer *aRenderer = aRenderers->GetNextItem()) {
 233         vtkCamera *aCamera = aRenderer->GetActiveCamera();
 234         double aScale = aCamera->GetParallelScale();
 235         if((aWidth - width())*(aHeight - height()) > 0)
 236           aCoeff = sqrt(double(aWidth)/double(width())*double(height())/double(aHeight));
 237         else
 238           aCoeff = double(aWidth)/double(width());
 239         aCamera->SetParallelScale(aScale*aCoeff);
 240       }
 241     }
 242   }
 243
 244   update();
 245 }
 246
 247
 248
 249 /*!
 250   Custom context menu event handler
 251 */
 252 void
 253 QVTK_RenderWindowInteractor
 254 ::contextMenuEvent( QContextMenuEvent* event )
 255 {}
 256
 257 /*!
 258   Custom mouse move event handler
 259 */
 260 void
 261 QVTK_RenderWindowInteractor
 262 ::mouseMoveEvent( QMouseEvent* event )
 263 {
 264   GetDevice()->SetEventInformationFlipY(event->x(),
 265                                         event->y(),
 266                                         event->modifiers() & Qt::ControlModifier,
 267                                         event->modifiers() & Qt::ShiftModifier);
 268   GetDevice()->MouseMoveEvent();
 269 }
 270
 271
 272 /*!
 273   Custom mouse press event handler
 274 */
 275 void
 276 QVTK_RenderWindowInteractor
 277 ::mousePressEvent( QMouseEvent* event )
 278 {
 279   GetDevice()->SetEventInformationFlipY(event->x(),
 280                                         event->y(),
 281                                         event->modifiers() & Qt::ControlModifier,
 282                                         event->modifiers() & Qt::ShiftModifier);
 283   if( event->button() & Qt::LeftButton )
 284     GetDevice()->LeftButtonPressEvent();
 285   else if( event->button() & Qt::MidButton )
 286     GetDevice()->MiddleButtonPressEvent();
 287   else if( event->button() & Qt::RightButton )
 288     GetDevice()->RightButtonPressEvent();
 289 }
 290
 291
 292 /*!
 293   Custom mouse release event handler
 294 */
 295 void
 296 QVTK_RenderWindowInteractor
 297 ::mouseReleaseEvent( QMouseEvent *event )
 298 {
 299   GetDevice()->SetEventInformationFlipY(event->x(),
 300                                         event->y(),
 301                                         event->modifiers() & Qt::ControlModifier,
 302                                         event->modifiers() & Qt::ShiftModifier);
 303
 304   if( event->button() & Qt::LeftButton )
 305     GetDevice()->LeftButtonReleaseEvent();
 306   else if( event->button() & Qt::MidButton )
 307     GetDevice()->MiddleButtonReleaseEvent();
 308   else if( event->button() & Qt::RightButton ) {
 309 #if defined(Fix_Of_vtkImplicitPlaneWidget_bug)
 310     GetDevice()->SetEventInformationFlipY( -99999, -99999,
 311                                            event->modifiers() & Qt::ControlModifier,
 312                                            event->modifiers() & Qt::ShiftModifier);
 313     bool blocked = blockSignals( true );
 314     GetDevice()->LeftButtonPressEvent();
 315     GetDevice()->LeftButtonReleaseEvent();
 316     blockSignals( blocked );
 317     GetDevice()->SetEventInformationFlipY(event->x(),
 318                                           event->y(),
 319                                           event->modifiers() & Qt::ControlModifier,
 320                                           event->modifiers() & Qt::ShiftModifier);
 321 #endif
 322     GetDevice()->RightButtonReleaseEvent();
 323   }
 324 }
 325
 326
 327 /*!
 328   Custom mouse double click event handler
 329 */
 330 void
 331 QVTK_RenderWindowInteractor
 332 ::mouseDoubleClickEvent( QMouseEvent* event )
 333 {}
 334
 335
 336 /*!
 337   Custom mouse wheel event handler
 338 */
 339 void
 340 QVTK_RenderWindowInteractor
 341 ::wheelEvent( QWheelEvent* event )
 342 {
 343   activateWindow();
 344   setFocus();
 345   GetDevice()->SetEventInformationFlipY(event->x(),
 346                                         event->y(),
 347                                         event->modifiers() & Qt::ControlModifier,
 348                                         event->modifiers() & Qt::ShiftModifier);
 349   if ( event->delta()>0)
 350     GetDevice()->MouseWheelForwardEvent();
 351   else
 352     GetDevice()->MouseWheelBackwardEvent();
 353 }
 354
 355
 356 /*!
 357   Custom key press event handler
 358 */
 359 void
 360 QVTK_RenderWindowInteractor
 361 ::keyPressEvent( QKeyEvent* event )
 362 {
 363   GetDevice()->SetKeyEventInformation(event->modifiers() & Qt::ControlModifier,
 364                                       event->modifiers() & Qt::ShiftModifier,
 365                                       event->key());
 366   GetDevice()->KeyPressEvent();
 367   GetDevice()->CharEvent();
 368 }
 369
 370 /*!
 371   Custom key release event handler
 372 */
 373 void
 374 QVTK_RenderWindowInteractor
 375 ::keyReleaseEvent( QKeyEvent * event )
 376 {
 377   GetDevice()->SetKeyEventInformation(event->modifiers() & Qt::ControlModifier,
 378                                       event->modifiers() & Qt::ShiftModifier,
 379                                       event->key());
 380   GetDevice()->KeyReleaseEvent();
 381 }
 382
 383
 384 /*!
 385   Custom enter event handler
 386 */
 387 void
 388 QVTK_RenderWindowInteractor
 389 ::enterEvent( QEvent* event )
 390 {
 391   if(FOCUS_UNDER_MOUSE){
 392     activateWindow();
 393     setFocus();
 394   }
 395   GetDevice()->EnterEvent();
 396 }
 397
 398 /*!
 399   Custom leave event handler
 400 */
 401 void
 402 QVTK_RenderWindowInteractor
 403 ::leaveEvent( QEvent * )
 404 {
 405   GetDevice()->LeaveEvent();
 406 }
 407
 408 /*!
 409   Reimplemented from QWidget in order to set window - receiver
 410   of space mouse events.
 411 */
 412 void
 413 QVTK_RenderWindowInteractor
 414 ::focusInEvent( QFocusEvent* event )
 415 {
 416   QWidget::focusInEvent( event );
 417
 418 #if !defined WIN32 && !defined __APPLE__
 419   // register set space mouse events receiver
 420 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 421   SVTK_SpaceMouseX* aSpaceMouse = SVTK_SpaceMouseX::getInstance();
 422   if ( aSpaceMouse )
 423   {
 424     if ( !aSpaceMouse->isSpaceMouseOn() )
 425       // initialize 3D space mouse driver
 426       aSpaceMouse->initialize( QX11Info::display(), winId() );
 427     else
 428       aSpaceMouse->setWindow( QX11Info::display(), winId() );
 429   }
 430 #else
 431   SVTK_SpaceMouseXCB* aSpaceMouse = SVTK_SpaceMouseXCB::getInstance();
 432   if ( aSpaceMouse )
 433   {
 434     if ( !aSpaceMouse->isSpaceMouseOn() )
 435       // initialize 3D space mouse driver
 436       aSpaceMouse->initialize( QX11Info::connection(), winId() );
 437     else
 438       aSpaceMouse->setWindow( QX11Info::connection(), winId() );
 439   }
 440 #endif
 441 #endif
 442 }
 443
 444 /*!
 445   Reimplemented from QWidget in order to set window - receiver
 446   of space mouse events.
 447 */
 448 void
 449 QVTK_RenderWindowInteractor
 450 ::focusOutEvent ( QFocusEvent* event )
 451 {
 452   QWidget::focusOutEvent( event );
 453
 454 #if !defined WIN32 && !defined __APPLE__
 455 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 456   // unregister set space mouse events receiver
 457   SVTK_SpaceMouseX* aSpaceMouse = SVTK_SpaceMouseX::getInstance();
 458   if ( aSpaceMouse && aSpaceMouse->isSpaceMouseOn() )
 459     aSpaceMouse->setWindow( QX11Info::display(), 0 );
 460 #else
 461   SVTK_SpaceMouseXCB* aSpaceMouse = SVTK_SpaceMouseXCB::getInstance();
 462   if ( aSpaceMouse && aSpaceMouse->isSpaceMouseOn() )
 463     aSpaceMouse->setWindow( QX11Info::connection(), 0 );
 464 #endif
 465 #endif
 466 }
 467
 468 // TODO (QT5 PORTING) Below is a temporary solution, to allow compiling with Qt 5
 469 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 470 #if defined(WIN32)
 471
 472 /*!
 473   To handle native Win32 events (from such devices as SpaceMouse)
 474 */
 475 bool QVTK_RenderWindowInteractor::winEvent( MSG* msg, long* result )
 476 {
 477   // TODO: Implement event handling for SpaceMouse
 478   return QWidget::winEvent( msg, result);
 479 }
 480
 481 #elif !defined(__APPLE__)
 482 /*!
 483   To handle native X11 events (from such devices as SpaceMouse)
 484 */
 485 bool
 486 QVTK_RenderWindowInteractor
 487 ::x11Event( XEvent *xEvent )
 488 {
 489   // handle 3d space mouse events
 490   if ( SVTK_SpaceMouseX* aSpaceMouse = SVTK_SpaceMouseX::getInstance() )
 491   {
 492     if ( aSpaceMouse->isSpaceMouseOn() && xEvent->type == ClientMessage )
 493     {
 494       SVTK_SpaceMouse::MoveEvent anEvent;
 495       int type = aSpaceMouse->translateEvent( QX11Info::display(), xEvent, &anEvent, 1.0, 1.0 );
 496       switch ( type )
 497       {
 498       case SVTK_SpaceMouse::SpaceMouseMove:
 499               GetDevice()->InvokeEvent( SVTK::SpaceMouseMoveEvent, anEvent.data );
 500               break;
 501       case SVTK_SpaceMouse::SpaceButtonPress:
 502               GetDevice()->InvokeEvent( SVTK::SpaceMouseButtonEvent, &anEvent.button );
 503               break;
 504       case SVTK_SpaceMouse::SpaceButtonRelease:
 505               break;
 506       }
 507       return true; // stop handling the event
 508     }
 509   }
 510
 511   return QWidget::x11Event( xEvent );
 512 }
 513
 514 #endif
 515
 516 #else // QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 517
 518 bool QVTK_RenderWindowInteractor
 519 ::nativeEvent(const QByteArray& eventType, void* message, long* result)
 520 {
 521 #if defined(WIN32)
 522   // TODO: WIN32-related implementation
 523 #elif !defined(__APPLE__)
 524   if ( eventType == "xcb_generic_event_t" )
 525   {
 526     xcb_generic_event_t* ev = static_cast<xcb_generic_event_t *>(message);
 527 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 528     // TODO: this code is never called
 529     if ( SVTK_SpaceMouseX* aSpaceMouse = SVTK_SpaceMouseX::getInstance() )
 530 #else
 531     if ( SVTK_SpaceMouseXCB* aSpaceMouse = SVTK_SpaceMouseXCB::getInstance() )
 532 #endif
 533     {
 534       if ( aSpaceMouse->isSpaceMouseOn() && ev->response_type == XCB_CLIENT_MESSAGE )
 535       {
 536         SVTK_SpaceMouse::MoveEvent anEvent;
 537 #if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 538         // TODO: this code is never called
 539         int type = aSpaceMouse->translateEvent( QX11Info::display(), xEvent, &anEvent, 1.0, 1.0 );
 540 #else
 541         int type = aSpaceMouse->translateEvent( QX11Info::connection(), (xcb_client_message_event_t*)ev, &anEvent, 1.0, 1.0 );
 542 #endif
 543         switch ( type )
 544         {
 545         case SVTK_SpaceMouse::SpaceMouseMove:
 546                 GetDevice()->InvokeEvent( SVTK::SpaceMouseMoveEvent, anEvent.data );
 547                 break;
 548         case SVTK_SpaceMouse::SpaceButtonPress:
 549                 GetDevice()->InvokeEvent( SVTK::SpaceMouseButtonEvent, &anEvent.button );
 550                 break;
 551         case SVTK_SpaceMouse::SpaceButtonRelease:
 552                 break;
 553         }
 554         return true; // stop handling the event
 555       }
 556     }
 557   }
 558 #endif
 559  return QWidget::nativeEvent( eventType, message, result );
 560 }
 561 #endif
 562 /*!
 563   Constructor
 564 */
 565 SVTK_RenderWindowInteractor
 566 ::SVTK_RenderWindowInteractor(QWidget* theParent,
 567                                const char* theName):
 568   QVTK_RenderWindowInteractor(theParent,theName),
 569   myEventCallbackCommand(vtkCallbackCommand::New())
 570 {
 571   myEventCallbackCommand->Delete();
 572
 573   myEventCallbackCommand->SetClientData(this);
 574   myPriority = 0.0;
 575
 576   myEventCallbackCommand->SetCallback(SVTK_RenderWindowInteractor::ProcessEvents);
 577 }
 578
 579 /*!
 580   To initialize properly the class
 581 */
 582 void
 583 SVTK_RenderWindowInteractor
 584 ::Initialize(vtkGenericRenderWindowInteractor* theDevice,
 585              SVTK_Renderer* theRenderer,
 586              SVTK_Selector* theSelector)
 587 {
 588   QVTK_RenderWindowInteractor::Initialize(theDevice);
 589   SetRenderer(theRenderer);
 590   SetSelector(theSelector);
 591 }
 592
 593 /*!
 594   Destructor
 595 */
 596 SVTK_RenderWindowInteractor
 597 ::~SVTK_RenderWindowInteractor()
 598 {
 599   // Sequence of the destruction call are fixed and should be changed.
 600   // vtkRenderWindow instance should be destroyed after all vtkRenderer's
 601   GetDevice()->SetInteractorStyle(NULL);
 602   while(!myInteractorStyles.empty()){
 603     const PInteractorStyle& aStyle = myInteractorStyles.top();
 604     aStyle->SetInteractor(NULL);
 605     myInteractorStyles.pop();
 606   }
 607 }
 608
 609 /*!
 610   To get corresponding SVTK_Renderer instance
 611 */
 612 SVTK_Renderer*
 613 SVTK_RenderWindowInteractor
 614 ::GetRenderer()
 615 {
 616   return myRenderer.GetPointer();
 617 }
 618
 619 /*!
 620   To get corresponding SVTK_Renderer device (just to simplify collobaration with SVTK_Renderer)
 621 */
 622 vtkRenderer*
 623 SVTK_RenderWindowInteractor
 624 ::getRenderer()
 625 {
 626   return GetRenderer()->GetDevice();
 627 }
 628
 629 /*!
 630   Changes renderer
 631   \param theRenderer - new renderer
 632 */
 633 void
 634 SVTK_RenderWindowInteractor
 635 ::SetRenderer(SVTK_Renderer* theRenderer)
 636 {
 637   if(theRenderer == myRenderer.GetPointer())
 638     return;
 639
 640   if(GetRenderer())
 641     myRenderWindow->RemoveRenderer(getRenderer());
 642
 643   myRenderer = theRenderer;
 644
 645   if(GetRenderer())
 646     myRenderWindow->AddRenderer(getRenderer());
 647 }
 648
 649
 650 /*!
 651   Changes interactor style
 652   \param theStyle - new interactor style
 653 */
 654 void
 655 SVTK_RenderWindowInteractor
 656 ::InitInteractorStyle(vtkInteractorStyle* theStyle)
 657 {
 658   GetDevice()->SetInteractorStyle(theStyle);
 659 }
 660
 661 /*!
 662   To change current interactor style by pushing the new one into the container
 663 */
 664 void
 665 SVTK_RenderWindowInteractor
 666 ::PushInteractorStyle(vtkInteractorStyle* theStyle)
 667 {
 668   myInteractorStyles.push(PInteractorStyle(theStyle));
 669   InitInteractorStyle(theStyle);
 670 }
 671
 672 /*!
 673   To restore previous interactor style
 674 */
 675 void
 676 SVTK_RenderWindowInteractor
 677 ::PopInteractorStyle()
 678 {
 679   if(GetInteractorStyle())
 680     myInteractorStyles.pop();
 681
 682   if(GetInteractorStyle())
 683     InitInteractorStyle(GetInteractorStyle());
 684 }
 685
 686 /*!
 687   To get current interactor style
 688 */
 689 vtkInteractorStyle*
 690 SVTK_RenderWindowInteractor
 691 ::GetInteractorStyle()
 692 {
 693   return myInteractorStyles.empty() ? 0 : myInteractorStyles.top().GetPointer();
 694 }
 695
 696
 697 /*!
 698   To get current selector
 699 */
 700 SVTK_Selector*
 701 SVTK_RenderWindowInteractor
 702 ::GetSelector()
 703 {
 704   return mySelector.GetPointer();
 705 }
 706
 707
 708 /*!
 709   Changes selector
 710   \param theSelector - new selector
 711 */
 712 void
 713 SVTK_RenderWindowInteractor
 714 ::SetSelector(SVTK_Selector* theSelector)
 715 {
 716   if(mySelector.GetPointer())
 717     mySelector->RemoveObserver(myEventCallbackCommand.GetPointer());
 718
 719   mySelector = theSelector;
 720
 721   if(mySelector.GetPointer())
 722     mySelector->AddObserver(vtkCommand::EndPickEvent,
 723                             myEventCallbackCommand.GetPointer(),
 724                             myPriority);
 725 }
 726
 727 /*!
 728   Main process VTK event method
 729 */
 730 void
 731 SVTK_RenderWindowInteractor
 732 ::ProcessEvents(vtkObject* vtkNotUsed(theObject),
 733                 unsigned long theEvent,
 734                 void* theClientData,
 735                 void* vtkNotUsed(theCallData))
 736 {
 737   SVTK_RenderWindowInteractor* self = reinterpret_cast<SVTK_RenderWindowInteractor*>(theClientData);
 738
 739   switch(theEvent){
 740   case vtkCommand::EndPickEvent:
 741     self->onEmitSelectionChanged();
 742     break;
 743   }
 744 }
 745
 746 /*!
 747   To change selection mode (just to simplify collobaration with SVTK_Selector)
 748 */
 749 void
 750 SVTK_RenderWindowInteractor
 751 ::SetSelectionMode(Selection_Mode theMode)
 752 {
 753   mySelector->SetSelectionMode(theMode);
 754 }
 755
 756 /*!
 757   To get current selection mode (just to simplify collobaration with SVTK_Selector)
 758 */
 759 Selection_Mode
 760 SVTK_RenderWindowInteractor
 761 ::SelectionMode() const
 762 {
 763   return mySelector->SelectionMode();
 764 }
 765
 766
 767 /*!
 768   Emits signal selectionChanged()
 769 */
 770 void
 771 SVTK_RenderWindowInteractor
 772 ::onEmitSelectionChanged()
 773 {
 774   return emit selectionChanged();
 775 }
 776
 777
 778 /*!
 779   Custom mouse move event handler
 780 */
 781 void
 782 SVTK_RenderWindowInteractor
 783 ::mouseMoveEvent( QMouseEvent* event )
 784 {
 785   QVTK_RenderWindowInteractor::mouseMoveEvent(event);
 786
 787   if(GENERATE_SUIT_EVENTS)
 788     emit MouseMove( event );
 789 }
 790
 791
 792 /*!
 793   Custom mouse press event handler
 794 */
 795 void
 796 SVTK_RenderWindowInteractor
 797 ::mousePressEvent( QMouseEvent* event )
 798 {
 799   QVTK_RenderWindowInteractor::mousePressEvent(event);
 800
 801   if(GENERATE_SUIT_EVENTS)
 802     emit MouseButtonPressed( event );
 803 }
 804
 805
 806 /*!
 807   Custom mouse release event handler
 808 */
 809 void
 810 SVTK_RenderWindowInteractor
 811 ::mouseReleaseEvent( QMouseEvent *event )
 812 {
 813   SVTK_InteractorStyle* style = 0;
 814   bool aRightBtn = event->button() == Qt::RightButton;
 815   bool isOperation = false;
 816   bool isPolygonalSelection = false;
 817   if( aRightBtn && GetInteractorStyle()) {
 818     style = dynamic_cast<SVTK_InteractorStyle*>( GetInteractorStyle() );
 819     if ( style )
 820       isOperation = style->CurrentState() != VTK_INTERACTOR_STYLE_CAMERA_NONE;
 821   }
 822
 823   QVTK_RenderWindowInteractor::mouseReleaseEvent(event);
 824
 825   if ( style ) {
 826     isPolygonalSelection = style->GetPolygonState() == Finished;
 827     style->SetPolygonState( Disable );
 828   }
 829
 830   if ( aRightBtn && !isOperation && !isPolygonalSelection &&
 831        !( event->modifiers() & Qt::ControlModifier ) &&
 832        !( event->modifiers() & Qt::ShiftModifier ) ) {
 833     QContextMenuEvent aEvent( QContextMenuEvent::Mouse,
 834                               event->pos(), event->globalPos() );
 835     emit contextMenuRequested( &aEvent );
 836   }
 837   if(GENERATE_SUIT_EVENTS)
 838     emit MouseButtonReleased( event );
 839 }
 840
 841
 842 /*!
 843   Custom mouse double click event handler
 844 */
 845 void
 846 SVTK_RenderWindowInteractor
 847 ::mouseDoubleClickEvent( QMouseEvent* event )
 848 {
 849   if( GetInteractorStyle() && event->button() == Qt::LeftButton ) {
 850     SVTK_InteractorStyle* style = dynamic_cast<SVTK_InteractorStyle*>( GetInteractorStyle() );
 851     if ( style )
 852       style->OnMouseButtonDoubleClick();
 853   }
 854
 855   QVTK_RenderWindowInteractor::mouseDoubleClickEvent(event);
 856
 857   if(GENERATE_SUIT_EVENTS)
 858     emit MouseDoubleClicked( event );
 859 }
 860
 861
 862 /*!
 863   Custom mouse wheel event handler
 864 */
 865 void
 866 SVTK_RenderWindowInteractor
 867 ::wheelEvent( QWheelEvent* event )
 868 {
 869   QVTK_RenderWindowInteractor::wheelEvent(event);
 870
 871   if(event->delta() > 0)
 872     GetDevice()->InvokeEvent(SVTK::ZoomInEvent,NULL);
 873   else
 874     GetDevice()->InvokeEvent(SVTK::ZoomOutEvent,NULL);
 875
 876   if(GENERATE_SUIT_EVENTS)
 877     emit WheelMoved( event );
 878 }
 879
 880 /*!
 881   Custom key press event handler
 882 */
 883 void
 884 SVTK_RenderWindowInteractor
 885 ::keyPressEvent( QKeyEvent* event )
 886 {
 887   QVTK_RenderWindowInteractor::keyPressEvent(event);
 888
 889   if(GENERATE_SUIT_EVENTS)
 890     emit KeyPressed( event );
 891 }
 892
 893 /*!
 894   Custom key release event handler
 895 */
 896 void
 897 SVTK_RenderWindowInteractor
 898 ::keyReleaseEvent( QKeyEvent * event )
 899 {
 900   QVTK_RenderWindowInteractor::keyReleaseEvent(event);
 901
 902   if(GENERATE_SUIT_EVENTS)
 903     emit KeyReleased( event );
 904 }
 905