1 /*# ---------------------------------------------------------------------
3 # Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
5 # Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
6 # Previous Authors : Laurent Guigues, Jean-Pierre Roux
7 # CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
9 # This software is governed by the CeCILL-B license under French law and
10 # abiding by the rules of distribution of free software. You can use,
11 # modify and/ or redistribute the software under the terms of the CeCILL-B
12 # license as circulated by CEA, CNRS and INRIA at the following URL
13 # http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
14 # or in the file LICENSE.txt.
16 # As a counterpart to the access to the source code and rights to copy,
17 # modify and redistribute granted by the license, users are provided only
18 # with a limited warranty and the software's author, the holder of the
19 # economic rights, and the successive licensors have only limited
22 # The fact that you are presently reading this means that you have had
23 # knowledge of the CeCILL-B license and that you accept its terms.
24 # ------------------------------------------------------------------------ */
26 /*=========================================================================
28 Program: Visualization Toolkit
29 Module: $RCSfile: wxVTKRenderWindowInteractor.cxx,v $
31 Date: $Date: 2012/11/15 14:14:35 $
32 Version: $Revision: 1.7 $
34 Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen
36 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
38 This software is distributed WITHOUT ANY WARRANTY; without even
39 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
40 PURPOSE. See the above copyright notice for more information.
42 =========================================================================*/
46 #include "wxVTKRenderWindowInteractor.h"
48 //This is needed for vtk 3.1 :
49 #ifndef VTK_MAJOR_VERSION
50 # include "vtkVersion.h"
53 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
54 # include "vtkCommand.h"
56 # include "vtkInteractorStyle.h"
58 #include "vtkDebugLeaks.h"
61 #include "vtkCarbonRenderWindow.h"
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 // To access objc calls on cocoa
77 #import <Cocoa/Cocoa.h>
78 // This trick is no longer need in VTK CVS, should get rid of that:
81 #error Build mismatch you need both wxWidgets and VTK to be configure against Cocoa to work
82 #endif //VTK_USE_COCOA
86 # include <gdk/gdkx.h> // GDK_WINDOW_XWINDOW is found here in wxWidgets 2.8.0
87 # include "gdk/gdkprivate.h"
88 #if wxCHECK_VERSION(2, 8, 0)
90 #include <wx/gtk/win_gtk.h>
92 #include <wx/gtk1/win_gtk.h>
95 #include <wx/gtk/win_gtk.h>
97 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
98 GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
99 GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
103 #include "wx/x11/privx.h"
104 #define GetXWindow(wxwin) ((Window)(wxwin)->GetHandle())
108 //For more info on this class please go to:
109 //http://wxvtk.sf.net
110 //This hack is for some buggy wxGTK version:
111 #if wxCHECK_VERSION(2, 3, 2) && !wxCHECK_VERSION(2, 4, 1) && defined(__WXGTK__)
112 # define WX_USE_X_CAPTURE 0
114 # define WX_USE_X_CAPTURE 1
117 #define ID_wxVTKRenderWindowInteractor_TIMER 1001
119 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
120 IMPLEMENT_DYNAMIC_CLASS(wxVTKRenderWindowInteractor, wxGLCanvas)
122 IMPLEMENT_DYNAMIC_CLASS(wxVTKRenderWindowInteractor, wxWindow)
125 //---------------------------------------------------------------------------
126 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
127 BEGIN_EVENT_TABLE(wxVTKRenderWindowInteractor, wxGLCanvas)
129 BEGIN_EVENT_TABLE(wxVTKRenderWindowInteractor, wxWindow)
131 //refresh window by doing a Render
132 EVT_PAINT (wxVTKRenderWindowInteractor::OnPaint)
133 EVT_ERASE_BACKGROUND(wxVTKRenderWindowInteractor::OnEraseBackground)
134 EVT_MOTION (wxVTKRenderWindowInteractor::OnMotion)
136 //Bind the events to the event converters
137 EVT_LEFT_DOWN (wxVTKRenderWindowInteractor::OnButtonDown)
138 EVT_MIDDLE_DOWN (wxVTKRenderWindowInteractor::OnButtonDown)
139 EVT_RIGHT_DOWN (wxVTKRenderWindowInteractor::OnButtonDown)
140 EVT_LEFT_UP (wxVTKRenderWindowInteractor::OnButtonUp)
141 EVT_MIDDLE_UP (wxVTKRenderWindowInteractor::OnButtonUp)
142 EVT_RIGHT_UP (wxVTKRenderWindowInteractor::OnButtonUp)
143 #if !(VTK_MAJOR_VERSION == 3 && VTK_MINOR_VERSION == 1)
144 EVT_ENTER_WINDOW(wxVTKRenderWindowInteractor::OnEnter)
145 EVT_LEAVE_WINDOW(wxVTKRenderWindowInteractor::OnLeave)
146 EVT_MOUSEWHEEL (wxVTKRenderWindowInteractor::OnMouseWheel)
147 EVT_KEY_DOWN (wxVTKRenderWindowInteractor::OnKeyDown)
148 EVT_KEY_UP (wxVTKRenderWindowInteractor::OnKeyUp)
149 EVT_CHAR (wxVTKRenderWindowInteractor::OnChar)
151 EVT_TIMER (ID_wxVTKRenderWindowInteractor_TIMER, wxVTKRenderWindowInteractor::OnTimer)
152 EVT_SIZE (wxVTKRenderWindowInteractor::OnSize)
155 vtkCxxRevisionMacro(wxVTKRenderWindowInteractor, "$Revision: 1.7 $")
156 vtkInstantiatorNewMacro(wxVTKRenderWindowInteractor)
158 //---------------------------------------------------------------------------
159 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
160 #if (wxCHECK_VERSION(2, 8, 0))
161 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor() : wxGLCanvas(0, -1, wxDefaultPosition), vtkRenderWindowInteractor()
163 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor() : wxGLCanvas(), vtkRenderWindowInteractor()
166 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor() : wxWindow(), vtkRenderWindowInteractor()
168 , timer(this, ID_wxVTKRenderWindowInteractor_TIMER)
169 , ActiveButton(wxEVT_NULL)
174 , RenderWhenDisabled(1)
177 #ifdef VTK_DEBUG_LEAKS
178 vtkDebugLeaks::ConstructClass("wxVTKRenderWindowInteractor");
180 this->RenderWindow = NULL;
181 this->SetRenderWindow(vtkRenderWindow::New());
182 this->RenderWindow->Delete();
184 //---------------------------------------------------------------------------
185 wxVTKRenderWindowInteractor::wxVTKRenderWindowInteractor(wxWindow *parent,
190 const wxString &name)
191 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
192 : wxGLCanvas(parent, id, pos, size, style, name), vtkRenderWindowInteractor()
194 : wxWindow(parent, id, pos, size, style, name), vtkRenderWindowInteractor()
196 , timer(this, ID_wxVTKRenderWindowInteractor_TIMER)
197 , ActiveButton(wxEVT_NULL)
202 , RenderWhenDisabled(1)
205 #ifdef VTK_DEBUG_LEAKS
206 vtkDebugLeaks::ConstructClass("wxVTKRenderWindowInteractor");
208 this->RenderWindow = NULL;
209 this->SetRenderWindow(vtkRenderWindow::New());
210 this->RenderWindow->Delete();
212 // On Mac (Carbon) we don't get notified of the initial window size with an EVT_SIZE event,
213 // so we update the size information of the interactor/renderwindow here
214 this->UpdateSize(size.x, size.y);
217 //---------------------------------------------------------------------------
218 wxVTKRenderWindowInteractor::~wxVTKRenderWindowInteractor()
220 SetRenderWindow(NULL);
221 SetInteractorStyle(NULL);
223 //---------------------------------------------------------------------------
224 wxVTKRenderWindowInteractor * wxVTKRenderWindowInteractor::New()
226 // we don't make use of the objectfactory, because we're not registered
227 return new wxVTKRenderWindowInteractor;
229 //---------------------------------------------------------------------------
230 void wxVTKRenderWindowInteractor::Initialize()
232 int *size = RenderWindow->GetSize();
233 // enable everything and start rendering
235 //RenderWindow->Start();
237 // set the size in the render window interactor
241 // this is initialized
244 //---------------------------------------------------------------------------
245 void wxVTKRenderWindowInteractor::Enable()
247 // if already enabled then done
253 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
258 //---------------------------------------------------------------------------
259 bool wxVTKRenderWindowInteractor::Enable(bool enable)
261 #if defined(__WXGTK__) && defined(USE_WXGLCANVAS)
262 return wxGLCanvas::Enable(enable);
264 return wxWindow::Enable(enable);
267 //---------------------------------------------------------------------------
268 void wxVTKRenderWindowInteractor::Disable()
270 // if already disabled then done
274 // that's it (we can't remove the event handler like it should be...)
278 //---------------------------------------------------------------------------
279 void wxVTKRenderWindowInteractor::Start()
281 // the interactor cannot control the event loop
282 vtkErrorMacro( << "wxVTKRenderWindowInteractor::Start() "
283 "interactor cannot control event loop.");
285 //---------------------------------------------------------------------------
286 void wxVTKRenderWindowInteractor::UpdateSize(int x, int y)
290 // if the size changed tell render window
291 if ( x != Size[0] || y != Size[1] )
293 // adjust our (vtkRenderWindowInteractor size)
296 // and our RenderWindow's size
297 RenderWindow->SetSize(x, y);
301 //---------------------------------------------------------------------------
302 int wxVTKRenderWindowInteractor::CreateTimer(int WXUNUSED(timertype))
304 // it's a one shot timer
305 if (!timer.Start(10, TRUE))
311 //---------------------------------------------------------------------------
312 int wxVTKRenderWindowInteractor::DestroyTimer()
317 //---------------------------------------------------------------------------
318 void wxVTKRenderWindowInteractor::OnTimer(wxTimerEvent& WXUNUSED(event))
323 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
325 InvokeEvent(vtkCommand::TimerEvent, NULL);
328 InteractorStyle->OnTimer();
332 //---------------------------------------------------------------------------
333 // NOTE on implementation:
334 // Bad luck you ended up in the only tricky place of this code.
335 // A few note, wxWidgets still refuse to provide such convenient method
336 // so I have to maintain it myself, eventhough this is completely integrated
338 // Anyway if this happen to break for you then compare to a recent version of wxPython
339 // and look for the function long wxPyGetWinHandle(wxWindow* win)
340 // in wxPython/src/helpers.cpp
341 long wxVTKRenderWindowInteractor::GetHandleHack()
343 //helper function to hide the MSW vs GTK stuff
346 // __WXMSW__ is for Win32
347 //__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)
348 // __WXGTK__ is for both gtk 1.2.x and gtk 2.x
349 #if defined(__WXMSW__) || defined(__WXMAC__)
350 handle_tmp = (long)this->GetHandle();
353 //__WXCOCOA__ stands for using the objective-c Cocoa API
355 // Here is how to find the NSWindow
356 wxTopLevelWindow* toplevel = dynamic_cast<wxTopLevelWindow*>(
357 wxGetTopLevelParent( this ) );
358 if (toplevel != NULL )
360 handle_tmp = (long)toplevel->GetNSWindow();
362 // The NSView will be deducted from
363 // [(NSWindow*)Handle contentView]
364 // if only I knew how to write that in c++
367 // Find and return the actual X-Window.
368 #if defined(__WXGTK__) || defined(__WXX11__)
369 return (long)GetXWindow(this);
373 // handle_tmp = (long)this->GetXWindow();
378 //---------------------------------------------------------------------------
379 void wxVTKRenderWindowInteractor::OnPaint(wxPaintEvent& WXUNUSED(event))
381 //must always be here
384 //do it here rather than in the cstor: this is safer.
387 Handle = GetHandleHack();
388 RenderWindow->SetWindowId(reinterpret_cast<void *>(Handle));
390 RenderWindow->SetParentId(reinterpret_cast<void *>(this->GetParent()->GetHWND()));
393 // get vtk to render to the wxWindows
396 // This solves a problem with repainting after a window resize
397 // See also: http://sourceforge.net/mailarchive/forum.php?thread_id=31690967&forum_id=41789
398 vtkCarbonRenderWindow* rwin = vtkCarbonRenderWindow::SafeDownCast(RenderWindow);
401 rwin->UpdateGLRegion();
405 //---------------------------------------------------------------------------
406 void wxVTKRenderWindowInteractor::OnEraseBackground(wxEraseEvent &event)
408 //turn off background erase to reduce flickering on MSW
411 //---------------------------------------------------------------------------
412 void wxVTKRenderWindowInteractor::OnSize(wxSizeEvent& WXUNUSED(event))
415 GetClientSize(&w, &h);
423 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
424 InvokeEvent(vtkCommand::ConfigureEvent, NULL);
426 //this will check for Handle
429 //---------------------------------------------------------------------------
430 void wxVTKRenderWindowInteractor::OnMotion(wxMouseEvent &event)
436 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
437 SetEventInformationFlipY(event.GetX(), event.GetY(),
438 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
440 InvokeEvent(vtkCommand::MouseMoveEvent, NULL);
442 InteractorStyle->OnMouseMove(event.ControlDown(), event.ShiftDown(),
443 event.GetX(), Size[1] - event.GetY() - 1);
446 //---------------------------------------------------------------------------
447 #if !(VTK_MAJOR_VERSION == 3 && VTK_MINOR_VERSION == 1)
448 void wxVTKRenderWindowInteractor::OnEnter(wxMouseEvent &event)
455 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
457 SetEventInformationFlipY(event.GetX(), event.GetY(),
458 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
460 InvokeEvent(vtkCommand::EnterEvent, NULL);
463 InteractorStyle->OnEnter(event.ControlDown(), event.ShiftDown(),
464 event.GetX(), Size[1] - event.GetY() - 1);
467 //---------------------------------------------------------------------------
468 void wxVTKRenderWindowInteractor::OnLeave(wxMouseEvent &event)
475 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
477 SetEventInformationFlipY(event.GetX(), event.GetY(),
478 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
480 InvokeEvent(vtkCommand::LeaveEvent, NULL);
483 InteractorStyle->OnLeave(event.ControlDown(), event.ShiftDown(),
484 event.GetX(), Size[1] - event.GetY() - 1);
487 //---------------------------------------------------------------------------
488 void wxVTKRenderWindowInteractor::OnKeyDown(wxKeyEvent &event)
495 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
497 int keycode = event.GetKeyCode();
499 if (((unsigned int)keycode) < 256)
501 // TODO: Unicode in non-Unicode mode ??
505 // we don't get a valid mouse position inside the key event on every platform
506 // so we retrieve the mouse position explicitly and pass it along
507 wxPoint mousePos = ScreenToClient(wxGetMousePosition());
508 SetEventInformationFlipY(mousePos.x, mousePos.y,
509 event.ControlDown(), event.ShiftDown(), key, 0, NULL);
510 InvokeEvent(vtkCommand::KeyPressEvent, NULL);
512 InteractorStyle->OnKeyDown(event.ControlDown(), event.ShiftDown(),
513 event.GetKeyCode(), 1);
517 //---------------------------------------------------------------------------
518 void wxVTKRenderWindowInteractor::OnKeyUp(wxKeyEvent &event)
525 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
527 int keycode = event.GetKeyCode();
529 if (((unsigned int)keycode) < 256)
531 // TODO: Unicode in non-Unicode mode ??
535 // we don't get a valid mouse position inside the key event on every platform
536 // so we retrieve the mouse position explicitly and pass it along
537 wxPoint mousePos = ScreenToClient(wxGetMousePosition());
538 SetEventInformationFlipY(mousePos.x, mousePos.y,
539 event.ControlDown(), event.ShiftDown(), key, 0, NULL);
540 InvokeEvent(vtkCommand::KeyReleaseEvent, NULL);
542 InteractorStyle->OnKeyUp(event.ControlDown(), event.ShiftDown(),
543 event.GetKeyCode(), 1);
547 #endif //!(VTK_MAJOR_VERSION == 3 && VTK_MINOR_VERSION == 1)
548 //---------------------------------------------------------------------------
549 void wxVTKRenderWindowInteractor::OnChar(wxKeyEvent &event)
556 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
558 int keycode = event.GetKeyCode();
560 if (((unsigned int)keycode) < 256)
562 // TODO: Unicode in non-Unicode mode ??
566 // we don't get a valid mouse position inside the key event on every platform
567 // so we retrieve the mouse position explicitly and pass it along
568 wxPoint mousePos = ScreenToClient(wxGetMousePosition());
569 SetEventInformationFlipY(mousePos.x, mousePos.y,
570 event.ControlDown(), event.ShiftDown(), key, 0, NULL);
571 InvokeEvent(vtkCommand::CharEvent, NULL);
575 //---------------------------------------------------------------------------
576 void wxVTKRenderWindowInteractor::OnButtonDown(wxMouseEvent &event)
578 if (!Enabled || (ActiveButton != wxEVT_NULL))
582 ActiveButton = event.GetEventType();
584 // On Mac (Carbon) and Windows we don't automatically get the focus when
585 // you click inside the window
586 // we therefore set the focus explicitly
587 // Apparently we need that on linux (GTK) too:
590 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
591 SetEventInformationFlipY(event.GetX(), event.GetY(),
592 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
595 if(event.RightDown())
597 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
599 InvokeEvent(vtkCommand::RightButtonPressEvent, NULL);
602 InteractorStyle->OnRightButtonDown(event.ControlDown(), event.ShiftDown(),
603 event.GetX(), Size[1] - event.GetY() - 1);
606 else if(event.LeftDown())
608 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
610 InvokeEvent(vtkCommand::LeftButtonPressEvent, NULL);
613 InteractorStyle->OnLeftButtonDown(event.ControlDown(), event.ShiftDown(),
614 event.GetX(), Size[1] - event.GetY() - 1);
617 else if(event.MiddleDown())
619 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
621 InvokeEvent(vtkCommand::MiddleButtonPressEvent, NULL);
624 InteractorStyle->OnMiddleButtonDown(event.ControlDown(), event.ShiftDown(),
625 event.GetX(), Size[1] - event.GetY() - 1);
628 //save the button and capture mouse until the button is released
630 //1. it is possible (WX_USE_X_CAPTURE)
631 //2. user decided to.
632 if ((ActiveButton != wxEVT_NULL) && WX_USE_X_CAPTURE && UseCaptureMouse)
637 //---------------------------------------------------------------------------
638 void wxVTKRenderWindowInteractor::OnButtonUp(wxMouseEvent &event)
640 //EVT_xxx_DOWN == EVT_xxx_UP - 1
641 //This is only needed if two mouse buttons are pressed at the same time.
642 //In wxWindows 2.4 and later: better use of wxMOUSE_BTN_RIGHT or
643 //wxEVT_COMMAND_RIGHT_CLICK
644 if (!Enabled || (ActiveButton != (event.GetEventType()-1)))
649 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
650 SetEventInformationFlipY(event.GetX(), event.GetY(),
651 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
654 if(ActiveButton == wxEVT_RIGHT_DOWN)
656 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
658 InvokeEvent(vtkCommand::RightButtonReleaseEvent, NULL);
661 InteractorStyle->OnRightButtonUp(event.ControlDown(), event.ShiftDown(),
662 event.GetX(), Size[1] - event.GetY() - 1);
665 else if(ActiveButton == wxEVT_LEFT_DOWN)
667 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
669 InvokeEvent(vtkCommand::LeftButtonReleaseEvent, NULL);
672 InteractorStyle->OnLeftButtonUp(event.ControlDown(), event.ShiftDown(),
673 event.GetX(), Size[1] - event.GetY() - 1);
676 else if(ActiveButton == wxEVT_MIDDLE_DOWN)
678 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 0)
680 InvokeEvent(vtkCommand::MiddleButtonReleaseEvent, NULL);
683 InteractorStyle->OnMiddleButtonUp(event.ControlDown(), event.ShiftDown(),
684 event.GetX(), Size[1] - event.GetY() - 1);
687 //if the ActiveButton is realeased, then release mouse capture
688 if ((ActiveButton != wxEVT_NULL) && WX_USE_X_CAPTURE && UseCaptureMouse)
692 ActiveButton = wxEVT_NULL;
694 //---------------------------------------------------------------------------
695 void wxVTKRenderWindowInteractor::OnMouseWheel(wxMouseEvent& event)
697 // Mouse wheel was only added after VTK 4.4 (I think...)
698 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 2)
700 //Set vtk event information ... The numebr of wheel rotations is stored in
701 //the x varible. y varible is zero
702 SetEventInformationFlipY(event.GetWheelRotation() / event.GetWheelDelta(), 0,
703 event.ControlDown(), event.ShiftDown(), '\0', 0, NULL);
704 if(event.GetWheelRotation() > 0)
707 InvokeEvent(vtkCommand::MouseWheelForwardEvent, NULL);
712 InvokeEvent(vtkCommand::MouseWheelBackwardEvent, NULL);
718 //---------------------------------------------------------------------------
719 void wxVTKRenderWindowInteractor::Render()
722 if (!RenderWhenDisabled)
724 //the user doesn't want us to render when the toplevel frame
725 //is disabled - first find the top level parent
726 wxWindow *topParent = wxGetTopLevelParent(this);
729 //if it exists, check whether it's enabled
730 //if it's not enabeld, RenderAllowed will be false
731 RenderAllowed = topParent->IsEnabled();
737 if(Handle && (Handle == GetHandleHack()) )
739 RenderWindow->Render();
741 #if VTK_MAJOR_VERSION > 4 || (VTK_MAJOR_VERSION == 4 && VTK_MINOR_VERSION > 2)
742 else if(GetHandleHack())
744 //this means the user has reparented us; let's adapt to the
745 //new situation by doing the WindowRemap dance
746 //store the new situation
747 Handle = GetHandleHack();
748 RenderWindow->SetNextWindowId(reinterpret_cast<void *>(Handle));
749 RenderWindow->WindowRemap();
750 RenderWindow->Render();
755 //---------------------------------------------------------------------------
756 void wxVTKRenderWindowInteractor::SetRenderWhenDisabled(int newValue)
758 //Change value of __RenderWhenDisabled ivar.
759 //If __RenderWhenDisabled is false (the default), this widget will not
760 //call Render() on the RenderWindow if the top level frame (i.e. the
761 //containing frame) has been disabled.
763 //This prevents recursive rendering during wxSafeYield() calls.
764 //wxSafeYield() can be called during the ProgressMethod() callback of
765 //a VTK object to have progress bars and other GUI elements updated -
766 //it does this by disabling all windows (disallowing user-input to
767 //prevent re-entrancy of code) and then handling all outstanding
770 //However, this often triggers an OnPaint() method for wxVTKRWIs,
771 //resulting in a Render(), resulting in Update() being called whilst
774 RenderWhenDisabled = (bool)newValue;
776 //---------------------------------------------------------------------------
778 // Set the variable that indicates that we want a stereo capable window
779 // be created. This method can only be called before a window is realized.
781 void wxVTKRenderWindowInteractor::SetStereo(int capable)
783 if (Stereo != capable)
786 RenderWindow->StereoCapableWindowOn();
787 RenderWindow->SetStereoTypeToCrystalEyes();
792 //---------------------------------------------------------------------------
795 void wxVTKRenderWindowInteractor::PrintSelf(ostream& os, vtkIndent indent)
797 this->Superclass::PrintSelf(os, indent);