wxVTKRenderWindowInteractor.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    wxVTKRenderWindowInteractor.h
  Language:  C++

  Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/

// .NAME  wxVTKRenderWindowInteractor - class to enable VTK to render to 
// and interact with wxWindow.
// .SECTION Description
//  wxVTKRenderWindowInteractor provide a VTK widget for wxWindow. This class
// was completely rewrote to have the 'Look & Feel' of the python version:
// wxVTKRenderWindowInteractor.py
// .SECTION Caveats 
//  - There is a know bug that prevent this class to works for more info see 
// WX_USE_X_CAPTURE. This bug only affect wxGTK from 2.3.2 to wxGTK 2.4.0.
//  - Furthermore this class is tempated over either wxWindows or wxGLCanvas,
// in wxWindows 2.3.1 and earlier, the wxGLCanvas had scroll bars, you can avoid
// this effect by playing with WX_BASE_CLASS at your risk (you might end up with
// lot of flickering.)
//  - This class might not be easily readable as it tried to work with VTK 3.2
//  and 4.x. This class doesn't support reparenting with VTK 4.2 and earlier.
// .SECTION see also
// wxVTKRenderWindowInteractor.py wxVTKRenderWindow.py
//
// Slightly modified version from Mathieu Malaterre's wxVTK project by
// Viet Bui Xuan and Reinhold Fuereder.

#ifndef _wxVTKRenderWindowInteractor_h_
#define _wxVTKRenderWindowInteractor_h_

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#  pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif

#include <wx/timer.h>
#include <wx/dcclient.h>

// vtk includes
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderWindow.h"

#ifdef __WXGTK__
#  if wxUSE_GLCANVAS
#    include <wx/glcanvas.h>
#  else
#    error "problem of wxGLCanvas, you need to build wxWidgets with opengl"
#  endif //wxUSE_GLCANVAS
#endif //__WXGTK__

// Motif version (renamed into wxX11 for wxWindow 2.4 and newer)
#if defined(__WXMOTIF__) 
# error This GUI is not supported by wxVTKRenderWindowInteractor for now
#endif

// wx forward declarations
class wxPaintEvent;
class wxMouseEvent;
class wxTimerEvent;
class wxKeyEvent;
class wxSizeEvent;

#ifdef __WXGTK__
class VTK_RENDERING_EXPORT wxVTKRenderWindowInteractor : public wxGLCanvas, virtual public vtkRenderWindowInteractor
#else
class VTK_RENDERING_EXPORT wxVTKRenderWindowInteractor : public wxWindow, virtual public vtkRenderWindowInteractor
#endif //__WXGTK__
{
  DECLARE_DYNAMIC_CLASS(wxVTKRenderWindowInteractor)
  
  public:
    //constructors
    wxVTKRenderWindowInteractor();

    wxVTKRenderWindowInteractor(wxWindow *parent,
                                wxWindowID id,
                                const wxPoint &pos = wxDefaultPosition,
                                const wxSize &size = wxDefaultSize,
                                long style = wxWANTS_CHARS | wxNO_FULL_REPAINT_ON_RESIZE,
                                const wxString &name = wxPanelNameStr);
    //vtk ::New()
    static wxVTKRenderWindowInteractor * New();
    void PrintSelf(ostream& os, vtkIndent indent);

     //destructor
    ~wxVTKRenderWindowInteractor();

    // vtkRenderWindowInteractor overrides
    void Initialize();
    void Enable();
    bool Enable(bool enable);
    void Disable();
    void Start();
    void UpdateSize(int x, int y);
    int CreateTimer(int timertype);
    int DestroyTimer();
    void TerminateApp() {};

    // event handlers
    void OnPaint(wxPaintEvent &event);
    void OnEraseBackground (wxEraseEvent& event);
    void OnMotion(wxMouseEvent &event);

    void OnButtonDown(wxMouseEvent &event);
    void OnButtonUp(wxMouseEvent &event);
#if !(VTK_MAJOR_VERSION == 3 && VTK_MINOR_VERSION == 1)
    void OnEnter(wxMouseEvent &event);
    void OnLeave(wxMouseEvent &event);
    void OnKeyDown(wxKeyEvent &event);
    void OnChar(wxKeyEvent &event);
    void OnKeyUp(wxKeyEvent &event);
#endif
    void OnTimer(wxTimerEvent &event);
    void OnSize(wxSizeEvent &event);

    void Render();
    void SetRenderWhenDisabled(int newValue);

    // Description:
    // Prescribe that the window be created in a stereo-capable mode. This
    // method must be called before the window is realized. Default if off.
    vtkGetMacro(Stereo,int);
    vtkBooleanMacro(Stereo,int);
    virtual void SetStereo(int capable);

    // Description:
    // As CaptureMouse could be a problem sometimes on a window box
    // This method allow to set or not the CaptureMouse.
    // This method actually will works only if WX_USE_X_CAPTURE was set to 1
    vtkSetMacro(UseCaptureMouse,int);
    vtkBooleanMacro(UseCaptureMouse,int);


    void SetKeyDownKeyRange (char key1, char key2);

  protected:
    wxTimer timer;
    int ActiveButton;
    int RenderAllowed;
    long GetHandleHack();
    int Stereo;


    bool IsInKeyDownRange (char key) const;
    
  private:
    long Handle;
    bool Created;
    int RenderWhenDisabled;
    int UseCaptureMouse;

    char m_keyDown1, m_keyDown2;
    char m_oldKeyDown;

    DECLARE_EVENT_TABLE()
};

#endif //_wxVTKRenderWindowInteractor_h_

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