2 # ---------------------------------------------------------------------
4 # Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
6 # Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
7 # Previous Authors : Laurent Guigues, Jean-Pierre Roux
8 # CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
10 # This software is governed by the CeCILL-B license under French law and
11 # abiding by the rules of distribution of free software. You can use,
12 # modify and/ or redistribute the software under the terms of the CeCILL-B
13 # license as circulated by CEA, CNRS and INRIA at the following URL
14 # http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
15 # or in the file LICENSE.txt.
17 # As a counterpart to the access to the source code and rights to copy,
18 # modify and redistribute granted by the license, users are provided only
19 # with a limited warranty and the software's author, the holder of the
20 # economic rights, and the successive licensors have only limited
23 # The fact that you are presently reading this means that you have had
24 # knowledge of the CeCILL-B license and that you accept its terms.
25 # ------------------------------------------------------------------------ */
28 /*=========================================================================
30 Program: Visualization Toolkit
31 Module: $RCSfile: wxVTKRenderWindowInteractor.cxx,v $
33 Date: $Date: 2012/11/16 08:52:36 $
34 Version: $Revision: 1.5 $
36 =========================================================================*/
40 #include "wxVTKRenderWindowInteractor.h"
42 //This is needed for vtk 3.1 :
43 #ifndef VTK_MAJOR_VERSION
44 # include "vtkVersion.h"
47 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
48 # include "vtkCommand.h"
50 # include "vtkInteractorStyle.h"
52 #include "vtkDebugLeaks.h"
55 #include "vtkCarbonRenderWindow.h"
58 //=======================================================================
59 // LG : NAMESPACE IS NECESSARY TO AVOID CONFLICTING SYMBOLS IN DYN LIBS
64 //Keep this for compatibilty reason, this was introduced in wxGTK 2.4.0
65 #if (!wxCHECK_VERSION(2, 4, 0))
66 wxWindow* wxGetTopLevelParent(wxWindow *win)
68 while ( win && !win->IsTopLevel() )
69 win = win->GetParent();
74 // LG : EO namespace bbwxvtk
75 //=======================================================================
77 // To access objc calls on cocoa
80 #import <Cocoa/Cocoa.h>
81 // This trick is no longer need in VTK CVS, should get rid of that:
84 #error Build mismatch you need both wxWidgets and VTK to be configure against Cocoa to work
85 #endif //VTK_USE_COCOA
89 # include <gdk/gdkx.h> // GDK_WINDOW_XWINDOW is found here in wxWidgets 2.8.0
90 # include "gdk/gdkprivate.h"
91 #if wxCHECK_VERSION(2, 8, 0)
93 #include <wx/gtk/win_gtk.h>
95 #include <wx/gtk1/win_gtk.h>
98 #include <wx/gtk/win_gtk.h>
100 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
101 GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
102 GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
106 #include "wx/x11/privx.h"
107 #define GetXWindow(wxwin) ((Window)(wxwin)->GetHandle())
111 //For more info on this class please go to:
112 //http://wxvtk.sf.net
113 //This hack is for some buggy wxGTK version:
114 #if wxCHECK_VERSION(2, 3, 2) && !wxCHECK_VERSION(2, 4, 1) && defined(__WXGTK__)
115 # define WX_USE_X_CAPTURE 0
117 # define WX_USE_X_CAPTURE 1
120 #define ID_wxVTKRenderWindowInteractor_TIMER 1001
122 //=======================================================================
123 // LG : NAMESPACE IS NECESSARY TO AVOID CONFLICTING SYMBOLS IN DYN LIBS
127 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
128 IMPLEMENT_DYNAMIC_CLASS(wxVTKRenderWindowInteractor, wxGLCanvas)
130 IMPLEMENT_DYNAMIC_CLASS(wxVTKRenderWindowInteractor, wxWindow)
133 //---------------------------------------------------------------------------
134 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
135 BEGIN_EVENT_TABLE(wxVTKRenderWindowInteractor, wxGLCanvas)
137 BEGIN_EVENT_TABLE(wxVTKRenderWindowInteractor, wxWindow)
139 //refresh window by doing a Render
140 EVT_PAINT (wxVTKRenderWindowInteractor::OnPaint)
141 EVT_ERASE_BACKGROUND(wxVTKRenderWindowInteractor::OnEraseBackground)
142 EVT_MOTION (wxVTKRenderWindowInteractor::OnMotion)
144 //Bind the events to the event converters
145 EVT_LEFT_DOWN (wxVTKRenderWindowInteractor::OnButtonDown)
146 EVT_MIDDLE_DOWN (wxVTKRenderWindowInteractor::OnButtonDown)
147 EVT_RIGHT_DOWN (wxVTKRenderWindowInteractor::OnButtonDown)
148 EVT_LEFT_UP (wxVTKRenderWindowInteractor::OnButtonUp)
149 EVT_MIDDLE_UP (wxVTKRenderWindowInteractor::OnButtonUp)
150 EVT_RIGHT_UP (wxVTKRenderWindowInteractor::OnButtonUp)
151 #if !(VTK_MAJOR_VERSION == 3 && VTK_MINOR_VERSION == 1)
152 EVT_ENTER_WINDOW(wxVTKRenderWindowInteractor::OnEnter)
153 EVT_LEAVE_WINDOW(wxVTKRenderWindowInteractor::OnLeave)
154 EVT_MOUSEWHEEL (wxVTKRenderWindowInteractor::OnMouseWheel)
155 EVT_KEY_DOWN (wxVTKRenderWindowInteractor::OnKeyDown)
156 EVT_KEY_UP (wxVTKRenderWindowInteractor::OnKeyUp)
157 EVT_CHAR (wxVTKRenderWindowInteractor::OnChar)
159 EVT_TIMER (ID_wxVTKRenderWindowInteractor_TIMER, wxVTKRenderWindowInteractor::OnTimer)
160 EVT_SIZE (wxVTKRenderWindowInteractor::OnSize)
163 vtkCxxRevisionMacro(wxVTKRenderWindowInteractor, "$Revision: 1.5 $")
164 vtkInstantiatorNewMacro(wxVTKRenderWindowInteractor)
166 //---------------------------------------------------------------------------
167 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
168 #if (wxCHECK_VERSION(2, 8, 0))
169 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor() : wxGLCanvas(0, -1, wxDefaultPosition), vtkRenderWindowInteractor()
171 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor() : wxGLCanvas(), vtkRenderWindowInteractor()
174 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor() : wxWindow(), vtkRenderWindowInteractor()
176 , timer(this, ID_wxVTKRenderWindowInteractor_TIMER)
177 , ActiveButton(wxEVT_NULL)
182 , RenderWhenDisabled(1)
185 #ifdef VTK_DEBUG_LEAKS
186 vtkDebugLeaks::ConstructClass("wxVTKRenderWindowInteractor");
188 this->RenderWindow = NULL;
189 this->SetRenderWindow(vtkRenderWindow::New());
190 this->RenderWindow->Delete();
192 //---------------------------------------------------------------------------
193 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor(wxWindow *parent,
198 const wxString &name)
199 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
200 : wxGLCanvas(parent, id, pos, size, style, name), vtkRenderWindowInteractor()
202 : wxWindow(parent, id, pos, size, style, name), vtkRenderWindowInteractor()
204 , timer(this, ID_wxVTKRenderWindowInteractor_TIMER)
205 , ActiveButton(wxEVT_NULL)
210 , RenderWhenDisabled(1)
213 #ifdef VTK_DEBUG_LEAKS
214 vtkDebugLeaks::ConstructClass("wxVTKRenderWindowInteractor");
216 this->RenderWindow = NULL;
217 this->SetRenderWindow(vtkRenderWindow::New());
218 this->RenderWindow->Delete();
220 // On Mac (Carbon) we don't get notified of the initial window size with an EVT_SIZE event,
221 // so we update the size information of the interactor/renderwindow here
222 this->UpdateSize(size.x, size.y);
225 //---------------------------------------------------------------------------
226 wxVTKRenderWindowInteractor::~wxVTKRenderWindowInteractor()
228 SetRenderWindow(NULL);
229 SetInteractorStyle(NULL);
231 //---------------------------------------------------------------------------
232 wxVTKRenderWindowInteractor * wxVTKRenderWindowInteractor::New()
234 // we don't make use of the objectfactory, because we're not registered
235 return new wxVTKRenderWindowInteractor;
237 //---------------------------------------------------------------------------
238 void wxVTKRenderWindowInteractor::Initialize()
240 int *size = RenderWindow->GetSize();
241 // enable everything and start rendering
243 //RenderWindow->Start();
245 // set the size in the render window interactor
249 // this is initialized
252 //---------------------------------------------------------------------------
253 void wxVTKRenderWindowInteractor::Enable()
255 // if already enabled then done
261 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
266 //---------------------------------------------------------------------------
267 bool wxVTKRenderWindowInteractor::Enable(bool enable)
269 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
270 return wxGLCanvas::Enable(enable);
272 return wxWindow::Enable(enable);
275 //---------------------------------------------------------------------------
276 void wxVTKRenderWindowInteractor::Disable()
278 // if already disabled then done
282 // that's it (we can't remove the event handler like it should be...)
286 //---------------------------------------------------------------------------
287 void wxVTKRenderWindowInteractor::Start()
289 // the interactor cannot control the event loop
290 vtkErrorMacro( << "wxVTKRenderWindowInteractor::Start() "
291 "interactor cannot control event loop.");
293 //---------------------------------------------------------------------------
294 void wxVTKRenderWindowInteractor::UpdateSize(int x, int y)
298 // if the size changed tell render window
299 if ( x != Size[0] || y != Size[1] )
301 // adjust our (vtkRenderWindowInteractor size)
304 // and our RenderWindow's size
305 RenderWindow->SetSize(x, y);
309 //---------------------------------------------------------------------------
310 int wxVTKRenderWindowInteractor::CreateTimer(int WXUNUSED(timertype))
312 // it's a one shot timer
313 if (!timer.Start(10, TRUE))
319 //---------------------------------------------------------------------------
320 int wxVTKRenderWindowInteractor::DestroyTimer()
325 //---------------------------------------------------------------------------
326 void wxVTKRenderWindowInteractor::OnTimer(wxTimerEvent& WXUNUSED(event))
331 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
333 InvokeEvent(vtkCommand::TimerEvent, NULL);
336 InteractorStyle->OnTimer();
340 //---------------------------------------------------------------------------
341 // NOTE on implementation:
342 // Bad luck you ended up in the only tricky place of this code.
343 // A few note, wxWidgets still refuse to provide such convenient method
344 // so I have to maintain it myself, eventhough this is completely integrated
346 // Anyway if this happen to break for you then compare to a recent version of wxPython
347 // and look for the function long wxPyGetWinHandle(wxWindow* win)
348 // in wxPython/src/helpers.cpp
349 long wxVTKRenderWindowInteractor::GetHandleHack()
351 //helper function to hide the MSW vs GTK stuff
354 // __WXMSW__ is for Win32
355 //__WXMAC__ stands for using Carbon C-headers, using either the CarbonLib/CFM or the native Mach-O builds (which then also use the latest features available)
356 // __WXGTK__ is for both gtk 1.2.x and gtk 2.x
357 #if defined(__WXMSW__) || defined(__WXMAC__)
358 handle_tmp = (long)this->GetHandle();
361 //__WXCOCOA__ stands for using the objective-c Cocoa API
363 // Here is how to find the NSWindow
364 wxTopLevelWindow* toplevel = dynamic_cast<wxTopLevelWindow*>(
365 wxGetTopLevelParent( this ) );
366 if (toplevel != NULL )
368 handle_tmp = (long)toplevel->GetNSWindow();
370 // The NSView will be deducted from
371 // [(NSWindow*)Handle contentView]
372 // if only I knew how to write that in c++
375 // Find and return the actual X-Window.
376 #if defined(__WXGTK__) || defined(__WXX11__)
377 return (long)GetXWindow(this);
381 // handle_tmp = (long)this->GetXWindow();
386 //---------------------------------------------------------------------------
387 void wxVTKRenderWindowInteractor::OnPaint(wxPaintEvent& WXUNUSED(event))
389 //must always be here
392 //do it here rather than in the cstor: this is safer.
395 Handle = GetHandleHack();
396 RenderWindow->SetWindowId(reinterpret_cast<void *>(Handle));
398 RenderWindow->SetParentId(reinterpret_cast<void *>(this->GetParent()->GetHWND()));
401 // get vtk to render to the wxWindows
404 // This solves a problem with repainting after a window resize
405 // See also: http://sourceforge.net/mailarchive/forum.php?thread_id=31690967&forum_id=41789
406 vtkCarbonRenderWindow* rwin = vtkCarbonRenderWindow::SafeDownCast(RenderWindow);
409 rwin->UpdateGLRegion();
413 //---------------------------------------------------------------------------
414 void wxVTKRenderWindowInteractor::OnEraseBackground(wxEraseEvent &event)
416 //turn off background erase to reduce flickering on MSW
419 //---------------------------------------------------------------------------
420 void wxVTKRenderWindowInteractor::OnSize(wxSizeEvent& WXUNUSED(event))
423 GetClientSize(&w, &h);
431 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
432 InvokeEvent(vtkCommand::ConfigureEvent, NULL);
434 //this will check for Handle
437 //---------------------------------------------------------------------------
438 void wxVTKRenderWindowInteractor::OnMotion(wxMouseEvent &event)
444 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
445 SetEventInformationFlipY(event.GetX(), event.GetY(),
446 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
448 InvokeEvent(vtkCommand::MouseMoveEvent, NULL);
450 InteractorStyle->OnMouseMove(event.ControlDown(), event.ShiftDown(),
451 event.GetX(), Size[1] - event.GetY() - 1);
454 //---------------------------------------------------------------------------
455 #if !(VTK_MAJOR_VERSION == 3 && VTK_MINOR_VERSION == 1)
456 void wxVTKRenderWindowInteractor::OnEnter(wxMouseEvent &event)
463 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
465 SetEventInformationFlipY(event.GetX(), event.GetY(),
466 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
468 InvokeEvent(vtkCommand::EnterEvent, NULL);
471 InteractorStyle->OnEnter(event.ControlDown(), event.ShiftDown(),
472 event.GetX(), Size[1] - event.GetY() - 1);
475 //---------------------------------------------------------------------------
476 void wxVTKRenderWindowInteractor::OnLeave(wxMouseEvent &event)
483 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
485 SetEventInformationFlipY(event.GetX(), event.GetY(),
486 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
488 InvokeEvent(vtkCommand::LeaveEvent, NULL);
491 InteractorStyle->OnLeave(event.ControlDown(), event.ShiftDown(),
492 event.GetX(), Size[1] - event.GetY() - 1);
495 //---------------------------------------------------------------------------
496 void wxVTKRenderWindowInteractor::OnKeyDown(wxKeyEvent &event)
503 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
505 int keycode = event.GetKeyCode();
507 if (((unsigned int)keycode) < 256)
509 // TODO: Unicode in non-Unicode mode ??
513 // we don't get a valid mouse position inside the key event on every platform
514 // so we retrieve the mouse position explicitly and pass it along
515 wxPoint mousePos = ScreenToClient(wxGetMousePosition());
516 SetEventInformationFlipY(mousePos.x, mousePos.y,
517 event.ControlDown(), event.ShiftDown(), key, 0, NULL);
518 InvokeEvent(vtkCommand::KeyPressEvent, NULL);
520 InteractorStyle->OnKeyDown(event.ControlDown(), event.ShiftDown(),
521 event.GetKeyCode(), 1);
525 //---------------------------------------------------------------------------
526 void wxVTKRenderWindowInteractor::OnKeyUp(wxKeyEvent &event)
533 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
535 int keycode = event.GetKeyCode();
537 if (((unsigned int)keycode) < 256)
539 // TODO: Unicode in non-Unicode mode ??
543 // we don't get a valid mouse position inside the key event on every platform
544 // so we retrieve the mouse position explicitly and pass it along
545 wxPoint mousePos = ScreenToClient(wxGetMousePosition());
546 SetEventInformationFlipY(mousePos.x, mousePos.y,
547 event.ControlDown(), event.ShiftDown(), key, 0, NULL);
548 InvokeEvent(vtkCommand::KeyReleaseEvent, NULL);
550 InteractorStyle->OnKeyUp(event.ControlDown(), event.ShiftDown(),
551 event.GetKeyCode(), 1);
555 #endif //!(VTK_MAJOR_VERSION == 3 && VTK_MINOR_VERSION == 1)
556 //---------------------------------------------------------------------------
557 void wxVTKRenderWindowInteractor::OnChar(wxKeyEvent &event)
564 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
566 int keycode = event.GetKeyCode();
568 if (((unsigned int)keycode) < 256)
570 // TODO: Unicode in non-Unicode mode ??
574 // we don't get a valid mouse position inside the key event on every platform
575 // so we retrieve the mouse position explicitly and pass it along
576 wxPoint mousePos = ScreenToClient(wxGetMousePosition());
577 SetEventInformationFlipY(mousePos.x, mousePos.y,
578 event.ControlDown(), event.ShiftDown(), key, 0, NULL);
579 InvokeEvent(vtkCommand::CharEvent, NULL);
583 //---------------------------------------------------------------------------
584 void wxVTKRenderWindowInteractor::OnButtonDown(wxMouseEvent &event)
586 if (!Enabled || (ActiveButton != wxEVT_NULL))
590 ActiveButton = event.GetEventType();
592 // On Mac (Carbon) and Windows we don't automatically get the focus when
593 // you click inside the window
594 // we therefore set the focus explicitly
595 // Apparently we need that on linux (GTK) too:
598 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
599 SetEventInformationFlipY(event.GetX(), event.GetY(),
600 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
603 if(event.RightDown())
605 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
607 InvokeEvent(vtkCommand::RightButtonPressEvent, NULL);
610 InteractorStyle->OnRightButtonDown(event.ControlDown(), event.ShiftDown(),
611 event.GetX(), Size[1] - event.GetY() - 1);
614 else if(event.LeftDown())
616 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
618 InvokeEvent(vtkCommand::LeftButtonPressEvent, NULL);
621 InteractorStyle->OnLeftButtonDown(event.ControlDown(), event.ShiftDown(),
622 event.GetX(), Size[1] - event.GetY() - 1);
625 else if(event.MiddleDown())
627 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
629 InvokeEvent(vtkCommand::MiddleButtonPressEvent, NULL);
632 InteractorStyle->OnMiddleButtonDown(event.ControlDown(), event.ShiftDown(),
633 event.GetX(), Size[1] - event.GetY() - 1);
636 //save the button and capture mouse until the button is released
638 //1. it is possible (WX_USE_X_CAPTURE)
639 //2. user decided to.
640 if ((ActiveButton != wxEVT_NULL) && WX_USE_X_CAPTURE && UseCaptureMouse)
645 //---------------------------------------------------------------------------
646 void wxVTKRenderWindowInteractor::OnButtonUp(wxMouseEvent &event)
648 //EVT_xxx_DOWN == EVT_xxx_UP - 1
649 //This is only needed if two mouse buttons are pressed at the same time.
650 //In wxWindows 2.4 and later: better use of wxMOUSE_BTN_RIGHT or
651 //wxEVT_COMMAND_RIGHT_CLICK
652 if (!Enabled || (ActiveButton != (event.GetEventType()-1)))
657 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
658 SetEventInformationFlipY(event.GetX(), event.GetY(),
659 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
662 if(ActiveButton == wxEVT_RIGHT_DOWN)
664 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
666 InvokeEvent(vtkCommand::RightButtonReleaseEvent, NULL);
669 InteractorStyle->OnRightButtonUp(event.ControlDown(), event.ShiftDown(),
670 event.GetX(), Size[1] - event.GetY() - 1);
673 else if(ActiveButton == wxEVT_LEFT_DOWN)
675 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
677 InvokeEvent(vtkCommand::LeftButtonReleaseEvent, NULL);
680 InteractorStyle->OnLeftButtonUp(event.ControlDown(), event.ShiftDown(),
681 event.GetX(), Size[1] - event.GetY() - 1);
684 else if(ActiveButton == wxEVT_MIDDLE_DOWN)
686 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
688 InvokeEvent(vtkCommand::MiddleButtonReleaseEvent, NULL);
691 InteractorStyle->OnMiddleButtonUp(event.ControlDown(), event.ShiftDown(),
692 event.GetX(), Size[1] - event.GetY() - 1);
695 //if the ActiveButton is realeased, then release mouse capture
696 if ((ActiveButton != wxEVT_NULL) && WX_USE_X_CAPTURE && UseCaptureMouse)
700 ActiveButton = wxEVT_NULL;
702 //---------------------------------------------------------------------------
703 void wxVTKRenderWindowInteractor::OnMouseWheel(wxMouseEvent& event)
705 // Mouse wheel was only added after VTK 4.4 (I think...)
706 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 2)
708 //Set vtk event information ... The numebr of wheel rotations is stored in
709 //the x varible. y varible is zero
710 SetEventInformationFlipY(event.GetWheelRotation() / event.GetWheelDelta(), 0,
711 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
712 if(event.GetWheelRotation() > 0)
715 InvokeEvent(vtkCommand::MouseWheelForwardEvent, NULL);
720 InvokeEvent(vtkCommand::MouseWheelBackwardEvent, NULL);
726 //---------------------------------------------------------------------------
727 void wxVTKRenderWindowInteractor::Render()
730 if (!RenderWhenDisabled)
732 //the user doesn't want us to render when the toplevel frame
733 //is disabled - first find the top level parent
734 wxWindow *topParent = wxGetTopLevelParent(this);
737 //if it exists, check whether it's enabled
738 //if it's not enabeld, RenderAllowed will be false
739 RenderAllowed = topParent->IsEnabled();
745 if(Handle && (Handle == GetHandleHack()) )
747 RenderWindow->Render();
749 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 2)
750 else if(GetHandleHack())
752 //this means the user has reparented us; let's adapt to the
753 //new situation by doing the WindowRemap dance
754 //store the new situation
755 Handle = GetHandleHack();
756 RenderWindow->SetNextWindowId(reinterpret_cast<void *>(Handle));
757 RenderWindow->WindowRemap();
758 RenderWindow->Render();
763 //---------------------------------------------------------------------------
764 void wxVTKRenderWindowInteractor::SetRenderWhenDisabled(int newValue)
766 //Change value of __RenderWhenDisabled ivar.
767 //If __RenderWhenDisabled is false (the default), this widget will not
768 //call Render() on the RenderWindow if the top level frame (i.e. the
769 //containing frame) has been disabled.
771 //This prevents recursive rendering during wxSafeYield() calls.
772 //wxSafeYield() can be called during the ProgressMethod() callback of
773 //a VTK object to have progress bars and other GUI elements updated -
774 //it does this by disabling all windows (disallowing user-input to
775 //prevent re-entrancy of code) and then handling all outstanding
778 //However, this often triggers an OnPaint() method for wxVTKRWIs,
779 //resulting in a Render(), resulting in Update() being called whilst
782 RenderWhenDisabled = (bool)newValue;
784 //---------------------------------------------------------------------------
786 // Set the variable that indicates that we want a stereo capable window
787 // be created. This method can only be called before a window is realized.
789 void wxVTKRenderWindowInteractor::SetStereo(int capable)
791 if (Stereo != capable)
794 RenderWindow->StereoCapableWindowOn();
795 RenderWindow->SetStereoTypeToCrystalEyes();
800 //---------------------------------------------------------------------------
803 void wxVTKRenderWindowInteractor::PrintSelf(ostream& os, vtkIndent indent)
805 this->Superclass::PrintSelf(os, indent);
810 // LG : EO namespace bbwxvtk
811 //=======================================================================