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[wxWidgets.git] / include / wx / msw / glcanvas.h

/////////////////////////////////////////////////////////////////////////////
// Name:        glcanvas.h
// Purpose:     wxGLCanvas, for using OpenGL with wxWindows under Windows
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma interface "glcanvas.h"
#endif

#ifndef _WX_GLCANVAS_H_
#define _WX_GLCANVAS_H_

#include <wx/setup.h>

#if wxUSE_GLCANVAS

#include <wx/palette.h>
#include <wx/scrolwin.h>

#include <windows.h>

#include "gl/gl.h"

//---------------------------------------------------------------------------
// Constants for attriblist
//---------------------------------------------------------------------------

// The generic GL implementation doesn't support most of these options,
// such as stereo, auxiliary buffers, alpha channel, and accum buffer.
// Other implementations may actually support them.

enum
{
  WX_GL_RGBA=1,          /* use true color palette */
  WX_GL_BUFFER_SIZE,     /* bits for buffer if not WX_GL_RGBA */
  WX_GL_LEVEL,           /* 0 for main buffer, >0 for overlay, <0 for underlay */
  WX_GL_DOUBLEBUFFER,    /* use doublebuffer */
  WX_GL_STEREO,          /* use stereoscopic display */
  WX_GL_AUX_BUFFERS,     /* number of auxiliary buffers */
  WX_GL_MIN_RED,         /* use red buffer with most bits (> MIN_RED bits) */
  WX_GL_MIN_GREEN,       /* use green buffer with most bits (> MIN_GREEN bits) */
  WX_GL_MIN_BLUE,        /* use blue buffer with most bits (> MIN_BLUE bits) */
  WX_GL_MIN_ALPHA,       /* use blue buffer with most bits (> MIN_ALPHA bits) */
  WX_GL_DEPTH_SIZE,      /* bits for Z-buffer (0,16,32) */
  WX_GL_STENCIL_SIZE,    /* bits for stencil buffer */
  WX_GL_MIN_ACCUM_RED,   /* use red accum buffer with most bits (> MIN_ACCUM_RED bits) */
  WX_GL_MIN_ACCUM_GREEN, /* use green buffer with most bits (> MIN_ACCUM_GREEN bits) */
  WX_GL_MIN_ACCUM_BLUE,  /* use blue buffer with most bits (> MIN_ACCUM_BLUE bits) */
  WX_GL_MIN_ACCUM_ALPHA  /* use blue buffer with most bits (> MIN_ACCUM_ALPHA bits) */
};

class WXDLLEXPORT wxGLCanvas;     /* forward reference */

class WXDLLEXPORT wxGLContext: public wxObject
{
public:
   wxGLContext(bool isRGB, wxGLCanvas *win, const wxPalette& palette = wxNullPalette);
   wxGLContext( 
               bool isRGB, wxGLCanvas *win, 
               const wxPalette& WXUNUSED(palette),
               const wxGLContext *other        /* for sharing display lists */
    );
   ~wxGLContext();

   void SetCurrent();
   void SetColour(const char *colour);
   void SwapBuffers();


   inline wxWindow* GetWindow() const { return m_window; }
   inline WXHDC GetHDC() const { return m_hDC; }
   inline HGLRC GetGLRC() const { return m_glContext; }

public:
   HGLRC            m_glContext;
   WXHDC            m_hDC;
   wxWindow*        m_window;
};

class WXDLLEXPORT wxGLCanvas: public wxScrolledWindow
{
   DECLARE_CLASS(wxGLCanvas)
 public:
   wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
        const wxSize& size = wxDefaultSize, long style = 0,
        const wxString& name = "GLCanvas", int *attribList = 0, const wxPalette& palette = wxNullPalette);
   wxGLCanvas( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
        wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
        const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = "GLCanvas", 
        int *attribList = (int*) NULL, const wxPalette& palette = wxNullPalette );

   wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared = (wxGLCanvas *)NULL, wxWindowID id = -1,
        const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0, 
        const wxString& name = "GLCanvas", int *attribList = 0, const wxPalette& palette = wxNullPalette );

   ~wxGLCanvas();

   // Replaces wxWindow::Create functionality, since we need to use a different window class
   bool Create(wxWindow *parent, wxWindowID id,
          const wxPoint& pos, const wxSize& size, long style, const wxString& name);

   void SetCurrent();
   void SetColour(const char *colour);
   void SwapBuffers();

   void OnSize(wxSizeEvent& event);

   void OnQueryNewPalette(wxQueryNewPaletteEvent& event);
   void OnPaletteChanged(wxPaletteChangedEvent& event);

   inline wxGLContext* GetContext() const { return m_glContext; }

   inline WXHDC GetHDC() const { return m_hDC; }
   void SetupPixelFormat(int *attribList = (int*) NULL);
   void SetupPalette(const wxPalette& palette);
   wxPalette CreateDefaultPalette();

   inline wxPalette* GetPalette() const { return (wxPalette*) & m_palette; }

protected:
    wxGLContext*   m_glContext;  // this is typedef-ed ptr, in fact
    wxPalette      m_palette;
    WXHDC          m_hDC;

DECLARE_EVENT_TABLE()
};

#endif
    // wxUSE_GLCANVAS
#endif
    // _WX_GLCANVAS_H_