wxWidgets/include/wx/gtk/glcanvas.h

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/////////////////////////////////////////////////////////////////////////////
// Name: glcanvas.h
// Purpose: wxGLCanvas, for using OpenGL/Mesa with wxWindows and GTK
// Author: Robert Roebling
// Modified by:
// Created: 17/8/98
// RCS-ID: $Id$
// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma interface "glcanvas.h"
#endif
#ifndef _WX_GLCANVAS_H_
#define _WX_GLCANVAS_H_
#include "wx/scrolwin.h"
#include "wx/app.h"
extern "C" {
#include <GL/gl.h>
#include <GL/glx.h>
#include <GL/glu.h>
}
//---------------------------------------------------------------------------
// Constants for attriblist
//---------------------------------------------------------------------------
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) */
};
//---------------------------------------------------------------------------
// classes
//---------------------------------------------------------------------------
class WXDLLEXPORT wxGLContext;
class WXDLLEXPORT wxGLCanvas;
//---------------------------------------------------------------------------
// wxGLContext
//---------------------------------------------------------------------------
class WXDLLEXPORT wxGLContext: public wxObject
{
public:
wxGLContext( bool isRGB, wxWindow *win, const wxPalette& palette = wxNullPalette );
wxGLContext(
bool WXUNUSED(isRGB), wxWindow *win,
const wxPalette& WXUNUSED(palette),
const wxGLContext *other /* for sharing display lists */
);
~wxGLContext();
void SetCurrent();
void SetColour(const char *colour);
void SwapBuffers();
void SetupPixelFormat();
void SetupPalette(const wxPalette& palette);
wxPalette CreateDefaultPalette();
inline wxPalette* GetPalette() const { return (wxPalette*) & m_palette; }
inline wxWindow* GetWindow() const { return m_window; }
inline GtkWidget* GetWidget() const { return m_widget; }
inline GLXContext GetContext() const { return m_glContext; }
public:
GLXContext m_glContext;
GtkWidget *m_widget;
wxPalette m_palette;
wxWindow* m_window;
private:
DECLARE_CLASS(wxGLContext)
};
//---------------------------------------------------------------------------
// wxGLCanvas
//---------------------------------------------------------------------------
class WXDLLEXPORT wxGLCanvas: public wxWindow
{
public:
inline wxGLCanvas() {
m_glContext = (wxGLContext*) NULL;
m_sharedContext = (wxGLContext*) NULL;
m_glWidget = (GtkWidget*) NULL;
m_vi = (void*) NULL;
m_exposed = FALSE;
}
wxGLCanvas( wxWindow *parent, 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 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 = (int*) NULL,
const wxPalette& palette = wxNullPalette );
bool Create( wxWindow *parent,
const wxGLContext *shared = (wxGLContext*)NULL,
const wxGLCanvas *shared_context_of = (wxGLCanvas*)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();
void SetCurrent();
void SetColour(const char *colour);
void SwapBuffers();
void OnSize(wxSizeEvent& event);
void OnInternalIdle();
inline wxGLContext* GetContext() const { return m_glContext; }
// implementation
wxGLContext *m_glContext,
*m_sharedContext;
wxGLCanvas *m_sharedContextOf;
void *m_vi; // actually an XVisualInfo*
bool m_canFreeVi;
GtkWidget *m_glWidget;
bool m_exposed;
// returns an XVisualInfo* based on desired GL attributes;
// returns NULL if an appropriate visual is not found. The
// caller is reponsible for using XFree() to deallocate
// the returned structure.
static void* ChooseGLVisual(int *attribList);
private:
DECLARE_EVENT_TABLE()
DECLARE_CLASS(wxGLCanvas)
};
#endif
// _WX_GLCANVAS_H_