src/gtk/glcanvas.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        gtk/glcanvas.cpp
// Purpose:     wxGLCanvas, for using OpenGL/Mesa with wxWidgets and GTK
// Author:      Robert Roebling
// Modified by:
// Created:     17/08/98
// RCS-ID:      $Id$
// Copyright:   (c) Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "glcanvas.h"
#endif

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

#include "wx/setup.h"

#if wxUSE_GLCANVAS

#include "wx/glcanvas.h"

#include "wx/frame.h"
#include "wx/colour.h"
#include "wx/module.h"
#include "wx/app.h"

extern "C"
{
#include "gtk/gtk.h"
#include "gdk/gdk.h"
#include "gdk/gdkx.h"
}

#include "wx/gtk/win_gtk.h"

// DLL options compatibility check:
#include "wx/build.h"
WX_CHECK_BUILD_OPTIONS("wxGL")

//---------------------------------------------------------------------------
// global data
//---------------------------------------------------------------------------

XVisualInfo *g_vi = (XVisualInfo*) NULL;

//-----------------------------------------------------------------------------
// idle system
//-----------------------------------------------------------------------------

extern void wxapp_install_idle_handler();
extern bool g_isIdle;

//---------------------------------------------------------------------------
// wxGLContext
//---------------------------------------------------------------------------

IMPLEMENT_CLASS(wxGLContext,wxObject)

wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
{
    m_window = win;
    m_widget = win->m_wxwindow;

    wxGLCanvas *gc = (wxGLCanvas*) win;
    XVisualInfo *vi = (XVisualInfo *) gc->m_vi;

    wxCHECK_RET( vi, _T("invalid visual for OpenGl") );

    m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );

    wxCHECK_RET( m_glContext, _T("Couldn't create OpenGl context") );
}

wxGLContext::wxGLContext(
               bool WXUNUSED(isRGB), wxWindow *win,
               const wxPalette& WXUNUSED(palette),
               const wxGLContext *other        /* for sharing display lists */
)
{
    m_window = win;
    m_widget = win->m_wxwindow;

    wxGLCanvas *gc = (wxGLCanvas*) win;
    XVisualInfo *vi = (XVisualInfo *) gc->m_vi;

    wxCHECK_RET( vi, _T("invalid visual for OpenGl") );

    m_glContext = glXCreateContext( GDK_DISPLAY(), vi,
                                    other ? other->m_glContext : None,
                                    GL_TRUE );

    if ( !m_glContext )
    {
        wxFAIL_MSG( _T("Couldn't create OpenGl context") );
    }
}

wxGLContext::~wxGLContext()
{
    if (!m_glContext) return;

    if (m_glContext == glXGetCurrentContext())
    {
        glXMakeCurrent( GDK_DISPLAY(), None, NULL);
    }

    glXDestroyContext( GDK_DISPLAY(), m_glContext );
}

void wxGLContext::SwapBuffers()
{
    if (m_glContext)
    {
        GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
        glXSwapBuffers( GDK_DISPLAY(), GDK_WINDOW_XWINDOW( window ) );
    }
}

void wxGLContext::SetCurrent()
{
    if (m_glContext)
    {
        GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
        glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window), m_glContext );
    }
}

void wxGLContext::SetColour(const wxChar *colour)
{
    wxColour col = wxTheColourDatabase->Find(colour);
    if (col.Ok())
    {
        float r = (float)(col.Red()/256.0);
        float g = (float)(col.Green()/256.0);
        float b = (float)(col.Blue()/256.0);
        glColor3f( r, g, b);
    }
}

void wxGLContext::SetupPixelFormat()
{
}

void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
{
}

wxPalette wxGLContext::CreateDefaultPalette()
{
    return wxNullPalette;
}

//-----------------------------------------------------------------------------
// "realize" from m_wxwindow
//-----------------------------------------------------------------------------

static gint
gtk_glwindow_realized_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
{
    if ( !win->m_glContext )
    {
        wxGLContext *share = win->m_sharedContext;
        if ( !share && win->m_sharedContextOf )
            share = win->m_sharedContextOf->GetContext();

        win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, share );
    }

    return FALSE;
}

//-----------------------------------------------------------------------------
// "map" from m_wxwindow
//-----------------------------------------------------------------------------

static gint
gtk_glwindow_map_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
{
    if (win->m_glContext/* && win->m_exposed*/)
    {
        wxPaintEvent event( win->GetId() );
        event.SetEventObject( win );
        win->GetEventHandler()->ProcessEvent( event );

        win->m_exposed = FALSE;
        win->GetUpdateRegion().Clear();
    }

    return FALSE;
}

//-----------------------------------------------------------------------------
// "expose_event" of m_wxwindow
//-----------------------------------------------------------------------------

static void
gtk_glwindow_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxGLCanvas *win )
{
    if (g_isIdle)
        wxapp_install_idle_handler();

    win->m_exposed = TRUE;

    win->GetUpdateRegion().Union( gdk_event->area.x,
                                  gdk_event->area.y,
                                  gdk_event->area.width,
                                  gdk_event->area.height );
}

//-----------------------------------------------------------------------------
// "draw" of m_wxwindow
//-----------------------------------------------------------------------------

#ifndef __WXGTK20__
static void
gtk_glwindow_draw_callback( GtkWidget *WXUNUSED(widget), GdkRectangle *rect, wxGLCanvas *win )
{
    if (g_isIdle)
        wxapp_install_idle_handler();

    win->m_exposed = TRUE;

    win->GetUpdateRegion().Union( rect->x, rect->y,
                                  rect->width, rect->height );
}
#endif

//-----------------------------------------------------------------------------
// "size_allocate" of m_wxwindow
//-----------------------------------------------------------------------------

static void
gtk_glcanvas_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxGLCanvas *win )
{
    if (g_isIdle)
        wxapp_install_idle_handler();

    if (!win->m_hasVMT)
        return;

    wxSizeEvent event( wxSize(win->m_width,win->m_height), win->GetId() );
    event.SetEventObject( win );
    win->GetEventHandler()->ProcessEvent( event );
}

//---------------------------------------------------------------------------
// wxGlCanvas
//---------------------------------------------------------------------------

IMPLEMENT_CLASS(wxGLCanvas, wxWindow)

BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
    EVT_SIZE(wxGLCanvas::OnSize)
END_EVENT_TABLE()

wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
                        const wxPoint& pos, const wxSize& size,
                        long style, const wxString& name,
                        int *attribList,
                        const wxPalette& palette )
{
    Create( parent, NULL, NULL, id, pos, size, style, name, attribList, palette );
}

wxGLCanvas::wxGLCanvas( wxWindow *parent,
                        const wxGLContext *shared,
                        wxWindowID id,
                        const wxPoint& pos, const wxSize& size,
                        long style, const wxString& name,
                        int *attribList,
                        const wxPalette& palette )
{
    Create( parent, shared, NULL, id, pos, size, style, name, attribList, palette );
}

wxGLCanvas::wxGLCanvas( wxWindow *parent,
                        const wxGLCanvas *shared,
                        wxWindowID id,
                        const wxPoint& pos, const wxSize& size,
                        long style, const wxString& name,
                        int *attribList,
                        const wxPalette& palette )
{
    Create( parent, NULL, shared, id, pos, size, style, name, attribList, palette );
}

bool wxGLCanvas::Create( wxWindow *parent,
                         const wxGLContext *shared,
                         const wxGLCanvas *shared_context_of,
                         wxWindowID id,
                         const wxPoint& pos, const wxSize& size,
                         long style, const wxString& name,
                         int *attribList,
                         const wxPalette& palette)
{
    m_sharedContext = (wxGLContext*)shared;  // const_cast
    m_sharedContextOf = (wxGLCanvas*)shared_context_of;  // const_cast
    m_glContext = (wxGLContext*) NULL;

    m_exposed = FALSE;
    m_noExpose = TRUE;
    m_nativeSizeEvent = TRUE;

    XVisualInfo *vi = NULL;
    if (wxTheApp->m_glVisualInfo != NULL)
    {
        vi = (XVisualInfo *) wxTheApp->m_glVisualInfo;
        m_canFreeVi = FALSE; // owned by wxTheApp - don't free upon destruction
    }
    else
    {
        vi = (XVisualInfo *) ChooseGLVisual(attribList);
        m_canFreeVi = TRUE;
    }
    m_vi = vi;  // save for later use

    wxCHECK_MSG( m_vi, FALSE, _T("required visual couldn't be found") );

    GdkVisual *visual = gdkx_visual_get( vi->visualid );
    GdkColormap *colormap = gdk_colormap_new( visual, TRUE );

    gtk_widget_push_colormap( colormap );
    gtk_widget_push_visual( visual );

    wxWindow::Create( parent, id, pos, size, style, name );

    m_glWidget = m_wxwindow;

#ifdef __WXGTK20__
    gtk_widget_set_double_buffered( m_glWidget, FALSE );
#endif

    gtk_pizza_set_clear( GTK_PIZZA(m_wxwindow), FALSE );

    gtk_signal_connect( GTK_OBJECT(m_wxwindow), "realize",
                            GTK_SIGNAL_FUNC(gtk_glwindow_realized_callback), (gpointer) this );

    gtk_signal_connect( GTK_OBJECT(m_wxwindow), "map",
                            GTK_SIGNAL_FUNC(gtk_glwindow_map_callback), (gpointer) this );

    gtk_signal_connect( GTK_OBJECT(m_wxwindow), "expose_event",
        GTK_SIGNAL_FUNC(gtk_glwindow_expose_callback), (gpointer)this );

#ifndef __WXGTK20__
    gtk_signal_connect( GTK_OBJECT(m_wxwindow), "draw",
        GTK_SIGNAL_FUNC(gtk_glwindow_draw_callback), (gpointer)this );
#endif

    gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
        GTK_SIGNAL_FUNC(gtk_glcanvas_size_callback), (gpointer)this );

    gtk_widget_pop_visual();
    gtk_widget_pop_colormap();

    // if our parent window is already visible, we had been realized before we
    // connected to the "realize" signal and hence our m_glContext hasn't been
    // initialized yet and we have to do it now
    if (GTK_WIDGET_REALIZED(m_wxwindow))
        gtk_glwindow_realized_callback( m_wxwindow, this );

    if (GTK_WIDGET_MAPPED(m_wxwindow))
        gtk_glwindow_map_callback( m_wxwindow, this );

    return TRUE;
}

wxGLCanvas::~wxGLCanvas()
{
    XVisualInfo *vi = (XVisualInfo *) m_vi;

    if (vi && m_canFreeVi) XFree( vi );
    delete m_glContext;
}

void* wxGLCanvas::ChooseGLVisual(int *attribList)
{
    int data[512];
    if (!attribList)
    {
        // default settings if attriblist = 0
        data[0] = GLX_RGBA;
        data[1] = GLX_DOUBLEBUFFER;
        data[2] = GLX_DEPTH_SIZE;   data[3] = 1;
        data[4] = GLX_RED_SIZE;     data[5] = 1;
        data[6] = GLX_GREEN_SIZE;   data[7] = 1;
        data[8] = GLX_BLUE_SIZE;    data[9] = 1;
        data[10] = GLX_ALPHA_SIZE;  data[11] = 0;
        data[12] = None;

        attribList = (int*) data;
    }
    else
    {
      int arg=0, p=0;

      while( (attribList[arg]!=0) && (p<510) )
      {
        switch( attribList[arg++] )
        {
          case WX_GL_RGBA: data[p++] = GLX_RGBA; break;
          case WX_GL_BUFFER_SIZE:
            data[p++]=GLX_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_LEVEL:
            data[p++]=GLX_LEVEL; data[p++]=attribList[arg++]; break;
          case WX_GL_DOUBLEBUFFER: data[p++] = GLX_DOUBLEBUFFER; break;
          case WX_GL_STEREO: data[p++] = GLX_STEREO; break;
          case WX_GL_AUX_BUFFERS:
            data[p++]=GLX_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_RED:
            data[p++]=GLX_RED_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_GREEN:
            data[p++]=GLX_GREEN_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_BLUE:
            data[p++]=GLX_BLUE_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_ALPHA:
            data[p++]=GLX_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_DEPTH_SIZE:
            data[p++]=GLX_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_STENCIL_SIZE:
            data[p++]=GLX_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_ACCUM_RED:
            data[p++]=GLX_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_ACCUM_GREEN:
            data[p++]=GLX_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_ACCUM_BLUE:
            data[p++]=GLX_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
          case WX_GL_MIN_ACCUM_ALPHA:
            data[p++]=GLX_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
          default:
            break;
        }
      }
      data[p] = 0;

      attribList = (int*) data;
    }


    Display *dpy = GDK_DISPLAY();

    return glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
}

void wxGLCanvas::SwapBuffers()
{
    if (m_glContext)
        m_glContext->SwapBuffers();
}

void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
{
}

void wxGLCanvas::SetCurrent()
{
    if (m_glContext)
        m_glContext->SetCurrent();
}

void wxGLCanvas::SetColour( const wxChar *colour )
{
    if (m_glContext)
        m_glContext->SetColour( colour );
}

void wxGLCanvas::OnInternalIdle()
{
    if (m_glContext && m_exposed)
    {
        wxPaintEvent event( GetId() );
        event.SetEventObject( this );
        GetEventHandler()->ProcessEvent( event );

        m_exposed = FALSE;
        GetUpdateRegion().Clear();
    }

    wxWindow::OnInternalIdle();
}


//---------------------------------------------------------------------------
// wxGLApp
//---------------------------------------------------------------------------

IMPLEMENT_CLASS(wxGLApp, wxApp)

wxGLApp::~wxGLApp()
{
    if (m_glVisualInfo)
        XFree(m_glVisualInfo);
}

bool wxGLApp::InitGLVisual(int *attribList)
{
    if (m_glVisualInfo)
        XFree(m_glVisualInfo);

    m_glVisualInfo = wxGLCanvas::ChooseGLVisual(attribList);

    return m_glVisualInfo != NULL;
}

#endif
    // wxUSE_GLCANVAS
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: gtk/glcanvas.cpp
	3	// Purpose: wxGLCanvas, for using OpenGL/Mesa with wxWidgets and GTK
	4	// Author: Robert Roebling
	5	// Modified by:
	6	// Created: 17/08/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Robert Roebling
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	13	#pragma implementation "glcanvas.h"
	14	#endif
	15
	16	// For compilers that support precompilation, includes "wx.h".
	17	#include "wx/wxprec.h"
	18
	19	#include "wx/setup.h"
	20
	21	#if wxUSE_GLCANVAS
	22
	23	#include "wx/glcanvas.h"
	24
	25	#include "wx/frame.h"
	26	#include "wx/colour.h"
	27	#include "wx/module.h"
	28	#include "wx/app.h"
	29
	30	extern "C"
	31	{
	32	#include "gtk/gtk.h"
	33	#include "gdk/gdk.h"
	34	#include "gdk/gdkx.h"
	35	}
	36
	37	#include "wx/gtk/win_gtk.h"
	38
	39	// DLL options compatibility check:
	40	#include "wx/build.h"
	41	WX_CHECK_BUILD_OPTIONS("wxGL")
	42
	43	//---------------------------------------------------------------------------
	44	// global data
	45	//---------------------------------------------------------------------------
	46
	47	XVisualInfo g_vi = (XVisualInfo) NULL;
	48
	49	//-----------------------------------------------------------------------------
	50	// idle system
	51	//-----------------------------------------------------------------------------
	52
	53	extern void wxapp_install_idle_handler();
	54	extern bool g_isIdle;
	55
	56	//---------------------------------------------------------------------------
	57	// wxGLContext
	58	//---------------------------------------------------------------------------
	59
	60	IMPLEMENT_CLASS(wxGLContext,wxObject)
	61
	62	wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
	63	{
	64	m_window = win;
	65	m_widget = win->m_wxwindow;
	66
	67	wxGLCanvas gc = (wxGLCanvas) win;
	68	XVisualInfo vi = (XVisualInfo ) gc->m_vi;
	69
	70	wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
	71
	72	m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
	73
	74	wxCHECK_RET( m_glContext, _T("Couldn't create OpenGl context") );
	75	}
	76
	77	wxGLContext::wxGLContext(
	78	bool WXUNUSED(isRGB), wxWindow *win,
	79	const wxPalette& WXUNUSED(palette),
	80	const wxGLContext other / for sharing display lists */
	81	)
	82	{
	83	m_window = win;
	84	m_widget = win->m_wxwindow;
	85
	86	wxGLCanvas gc = (wxGLCanvas) win;
	87	XVisualInfo vi = (XVisualInfo ) gc->m_vi;
	88
	89	wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
	90
	91	m_glContext = glXCreateContext( GDK_DISPLAY(), vi,
	92	other ? other->m_glContext : None,
	93	GL_TRUE );
	94
	95	if ( !m_glContext )
	96	{
	97	wxFAIL_MSG( _T("Couldn't create OpenGl context") );
	98	}
	99	}
	100
	101	wxGLContext::~wxGLContext()
	102	{
	103	if (!m_glContext) return;
	104
	105	if (m_glContext == glXGetCurrentContext())
	106	{
	107	glXMakeCurrent( GDK_DISPLAY(), None, NULL);
	108	}
	109
	110	glXDestroyContext( GDK_DISPLAY(), m_glContext );
	111	}
	112
	113	void wxGLContext::SwapBuffers()
	114	{
	115	if (m_glContext)
	116	{
	117	GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
	118	glXSwapBuffers( GDK_DISPLAY(), GDK_WINDOW_XWINDOW( window ) );
	119	}
	120	}
	121
	122	void wxGLContext::SetCurrent()
	123	{
	124	if (m_glContext)
	125	{
	126	GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
	127	glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window), m_glContext );
	128	}
	129	}
	130
	131	void wxGLContext::SetColour(const wxChar *colour)
	132	{
	133	wxColour col = wxTheColourDatabase->Find(colour);
	134	if (col.Ok())
	135	{
	136	float r = (float)(col.Red()/256.0);
	137	float g = (float)(col.Green()/256.0);
	138	float b = (float)(col.Blue()/256.0);
	139	glColor3f( r, g, b);
	140	}
	141	}
	142
	143	void wxGLContext::SetupPixelFormat()
	144	{
	145	}
	146
	147	void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
	148	{
	149	}
	150
	151	wxPalette wxGLContext::CreateDefaultPalette()
	152	{
	153	return wxNullPalette;
	154	}
	155
	156	//-----------------------------------------------------------------------------
	157	// "realize" from m_wxwindow
	158	//-----------------------------------------------------------------------------
	159
	160	static gint
	161	gtk_glwindow_realized_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
	162	{
	163	if ( !win->m_glContext )
	164	{
	165	wxGLContext *share = win->m_sharedContext;
	166	if ( !share && win->m_sharedContextOf )
	167	share = win->m_sharedContextOf->GetContext();
	168
	169	win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, share );
	170	}
	171
	172	return FALSE;
	173	}
	174
	175	//-----------------------------------------------------------------------------
	176	// "map" from m_wxwindow
	177	//-----------------------------------------------------------------------------
	178
	179	static gint
	180	gtk_glwindow_map_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
	181	{
	182	if (win->m_glContext/* && win->m_exposed*/)
	183	{
	184	wxPaintEvent event( win->GetId() );
	185	event.SetEventObject( win );
	186	win->GetEventHandler()->ProcessEvent( event );
	187
	188	win->m_exposed = FALSE;
	189	win->GetUpdateRegion().Clear();
	190	}
	191
	192	return FALSE;
	193	}
	194
	195	//-----------------------------------------------------------------------------
	196	// "expose_event" of m_wxwindow
	197	//-----------------------------------------------------------------------------
	198
	199	static void
	200	gtk_glwindow_expose_callback( GtkWidget WXUNUSED(widget), GdkEventExpose gdk_event, wxGLCanvas *win )
	201	{
	202	if (g_isIdle)
	203	wxapp_install_idle_handler();
	204
	205	win->m_exposed = TRUE;
	206
	207	win->GetUpdateRegion().Union( gdk_event->area.x,
	208	gdk_event->area.y,
	209	gdk_event->area.width,
	210	gdk_event->area.height );
	211	}
	212
	213	//-----------------------------------------------------------------------------
	214	// "draw" of m_wxwindow
	215	//-----------------------------------------------------------------------------
	216
	217	#ifndef __WXGTK20__
	218	static void
	219	gtk_glwindow_draw_callback( GtkWidget WXUNUSED(widget), GdkRectangle rect, wxGLCanvas *win )
	220	{
	221	if (g_isIdle)
	222	wxapp_install_idle_handler();
	223
	224	win->m_exposed = TRUE;
	225
	226	win->GetUpdateRegion().Union( rect->x, rect->y,
	227	rect->width, rect->height );
	228	}
	229	#endif
	230
	231	//-----------------------------------------------------------------------------
	232	// "size_allocate" of m_wxwindow
	233	//-----------------------------------------------------------------------------
	234
	235	static void
	236	gtk_glcanvas_size_callback( GtkWidget WXUNUSED(widget), GtkAllocation alloc, wxGLCanvas *win )
	237	{
	238	if (g_isIdle)
	239	wxapp_install_idle_handler();
	240
	241	if (!win->m_hasVMT)
	242	return;
	243
	244	wxSizeEvent event( wxSize(win->m_width,win->m_height), win->GetId() );
	245	event.SetEventObject( win );
	246	win->GetEventHandler()->ProcessEvent( event );
	247	}
	248
	249	//---------------------------------------------------------------------------
	250	// wxGlCanvas
	251	//---------------------------------------------------------------------------
	252
	253	IMPLEMENT_CLASS(wxGLCanvas, wxWindow)
	254
	255	BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
	256	EVT_SIZE(wxGLCanvas::OnSize)
	257	END_EVENT_TABLE()
	258
	259	wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
	260	const wxPoint& pos, const wxSize& size,
	261	long style, const wxString& name,
	262	int *attribList,
	263	const wxPalette& palette )
	264	{
	265	Create( parent, NULL, NULL, id, pos, size, style, name, attribList, palette );
	266	}
	267
	268	wxGLCanvas::wxGLCanvas( wxWindow *parent,
	269	const wxGLContext *shared,
	270	wxWindowID id,
	271	const wxPoint& pos, const wxSize& size,
	272	long style, const wxString& name,
	273	int *attribList,
	274	const wxPalette& palette )
	275	{
	276	Create( parent, shared, NULL, id, pos, size, style, name, attribList, palette );
	277	}
	278
	279	wxGLCanvas::wxGLCanvas( wxWindow *parent,
	280	const wxGLCanvas *shared,
	281	wxWindowID id,
	282	const wxPoint& pos, const wxSize& size,
	283	long style, const wxString& name,
	284	int *attribList,
	285	const wxPalette& palette )
	286	{
	287	Create( parent, NULL, shared, id, pos, size, style, name, attribList, palette );
	288	}
	289
	290	bool wxGLCanvas::Create( wxWindow *parent,
	291	const wxGLContext *shared,
	292	const wxGLCanvas *shared_context_of,
	293	wxWindowID id,
	294	const wxPoint& pos, const wxSize& size,
	295	long style, const wxString& name,
	296	int *attribList,
	297	const wxPalette& palette)
	298	{
	299	m_sharedContext = (wxGLContext*)shared; // const_cast
	300	m_sharedContextOf = (wxGLCanvas*)shared_context_of; // const_cast
	301	m_glContext = (wxGLContext*) NULL;
	302
	303	m_exposed = FALSE;
	304	m_noExpose = TRUE;
	305	m_nativeSizeEvent = TRUE;
	306
	307	XVisualInfo *vi = NULL;
	308	if (wxTheApp->m_glVisualInfo != NULL)
	309	{
	310	vi = (XVisualInfo *) wxTheApp->m_glVisualInfo;
	311	m_canFreeVi = FALSE; // owned by wxTheApp - don't free upon destruction
	312	}
	313	else
	314	{
	315	vi = (XVisualInfo *) ChooseGLVisual(attribList);
	316	m_canFreeVi = TRUE;
	317	}
	318	m_vi = vi; // save for later use
	319
	320	wxCHECK_MSG( m_vi, FALSE, _T("required visual couldn't be found") );
	321
	322	GdkVisual *visual = gdkx_visual_get( vi->visualid );
	323	GdkColormap *colormap = gdk_colormap_new( visual, TRUE );
	324
	325	gtk_widget_push_colormap( colormap );
	326	gtk_widget_push_visual( visual );
	327
	328	wxWindow::Create( parent, id, pos, size, style, name );
	329
	330	m_glWidget = m_wxwindow;
	331
	332	#ifdef __WXGTK20__
	333	gtk_widget_set_double_buffered( m_glWidget, FALSE );
	334	#endif
	335
	336	gtk_pizza_set_clear( GTK_PIZZA(m_wxwindow), FALSE );
	337
	338	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "realize",
	339	GTK_SIGNAL_FUNC(gtk_glwindow_realized_callback), (gpointer) this );
	340
	341	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "map",
	342	GTK_SIGNAL_FUNC(gtk_glwindow_map_callback), (gpointer) this );
	343
	344	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "expose_event",
	345	GTK_SIGNAL_FUNC(gtk_glwindow_expose_callback), (gpointer)this );
	346
	347	#ifndef __WXGTK20__
	348	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "draw",
	349	GTK_SIGNAL_FUNC(gtk_glwindow_draw_callback), (gpointer)this );
	350	#endif
	351
	352	gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
	353	GTK_SIGNAL_FUNC(gtk_glcanvas_size_callback), (gpointer)this );
	354
	355	gtk_widget_pop_visual();
	356	gtk_widget_pop_colormap();
	357
	358	// if our parent window is already visible, we had been realized before we
	359	// connected to the "realize" signal and hence our m_glContext hasn't been
	360	// initialized yet and we have to do it now
	361	if (GTK_WIDGET_REALIZED(m_wxwindow))
	362	gtk_glwindow_realized_callback( m_wxwindow, this );
	363
	364	if (GTK_WIDGET_MAPPED(m_wxwindow))
	365	gtk_glwindow_map_callback( m_wxwindow, this );
	366
	367	return TRUE;
	368	}
	369
	370	wxGLCanvas::~wxGLCanvas()
	371	{
	372	XVisualInfo vi = (XVisualInfo ) m_vi;
	373
	374	if (vi && m_canFreeVi) XFree( vi );
	375	delete m_glContext;
	376	}
	377
	378	void* wxGLCanvas::ChooseGLVisual(int *attribList)
	379	{
	380	int data[512];
	381	if (!attribList)
	382	{
	383	// default settings if attriblist = 0
	384	data[0] = GLX_RGBA;
	385	data[1] = GLX_DOUBLEBUFFER;
	386	data[2] = GLX_DEPTH_SIZE; data[3] = 1;
	387	data[4] = GLX_RED_SIZE; data[5] = 1;
	388	data[6] = GLX_GREEN_SIZE; data[7] = 1;
	389	data[8] = GLX_BLUE_SIZE; data[9] = 1;
	390	data[10] = GLX_ALPHA_SIZE; data[11] = 0;
	391	data[12] = None;
	392
	393	attribList = (int*) data;
	394	}
	395	else
	396	{
	397	int arg=0, p=0;
	398
	399	while( (attribList[arg]!=0) && (p<510) )
	400	{
	401	switch( attribList[arg++] )
	402	{
	403	case WX_GL_RGBA: data[p++] = GLX_RGBA; break;
	404	case WX_GL_BUFFER_SIZE:
	405	data[p++]=GLX_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
	406	case WX_GL_LEVEL:
	407	data[p++]=GLX_LEVEL; data[p++]=attribList[arg++]; break;
	408	case WX_GL_DOUBLEBUFFER: data[p++] = GLX_DOUBLEBUFFER; break;
	409	case WX_GL_STEREO: data[p++] = GLX_STEREO; break;
	410	case WX_GL_AUX_BUFFERS:
	411	data[p++]=GLX_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
	412	case WX_GL_MIN_RED:
	413	data[p++]=GLX_RED_SIZE; data[p++]=attribList[arg++]; break;
	414	case WX_GL_MIN_GREEN:
	415	data[p++]=GLX_GREEN_SIZE; data[p++]=attribList[arg++]; break;
	416	case WX_GL_MIN_BLUE:
	417	data[p++]=GLX_BLUE_SIZE; data[p++]=attribList[arg++]; break;
	418	case WX_GL_MIN_ALPHA:
	419	data[p++]=GLX_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
	420	case WX_GL_DEPTH_SIZE:
	421	data[p++]=GLX_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
	422	case WX_GL_STENCIL_SIZE:
	423	data[p++]=GLX_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
	424	case WX_GL_MIN_ACCUM_RED:
	425	data[p++]=GLX_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
	426	case WX_GL_MIN_ACCUM_GREEN:
	427	data[p++]=GLX_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
	428	case WX_GL_MIN_ACCUM_BLUE:
	429	data[p++]=GLX_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
	430	case WX_GL_MIN_ACCUM_ALPHA:
	431	data[p++]=GLX_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
	432	default:
	433	break;
	434	}
	435	}
	436	data[p] = 0;
	437
	438	attribList = (int*) data;
	439	}
	440
	441
	442	Display *dpy = GDK_DISPLAY();
	443
	444	return glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
	445	}
	446
	447	void wxGLCanvas::SwapBuffers()
	448	{
	449	if (m_glContext)
	450	m_glContext->SwapBuffers();
	451	}
	452
	453	void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
	454	{
	455	}
	456
	457	void wxGLCanvas::SetCurrent()
	458	{
	459	if (m_glContext)
	460	m_glContext->SetCurrent();
	461	}
	462
	463	void wxGLCanvas::SetColour( const wxChar *colour )
	464	{
	465	if (m_glContext)
	466	m_glContext->SetColour( colour );
	467	}
	468
	469	void wxGLCanvas::OnInternalIdle()
	470	{
	471	if (m_glContext && m_exposed)
	472	{
	473	wxPaintEvent event( GetId() );
	474	event.SetEventObject( this );
	475	GetEventHandler()->ProcessEvent( event );
	476
	477	m_exposed = FALSE;
	478	GetUpdateRegion().Clear();
	479	}
	480
	481	wxWindow::OnInternalIdle();
	482	}
	483
	484
	485
	486	//---------------------------------------------------------------------------
	487	// wxGLApp
	488	//---------------------------------------------------------------------------
	489
	490	IMPLEMENT_CLASS(wxGLApp, wxApp)
	491
	492	wxGLApp::~wxGLApp()
	493	{
	494	if (m_glVisualInfo)
	495	XFree(m_glVisualInfo);
	496	}
	497
	498	bool wxGLApp::InitGLVisual(int *attribList)
	499	{
	500	if (m_glVisualInfo)
	501	XFree(m_glVisualInfo);
	502
	503	m_glVisualInfo = wxGLCanvas::ChooseGLVisual(attribList);
	504
	505	return m_glVisualInfo != NULL;
	506	}
	507
	508	#endif
	509	// wxUSE_GLCANVAS
	510