[wxWidgets.git] / src / gtk / glcanvas.cpp

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

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

#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"

//---------------------------------------------------------------------------
// 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, "invalid visual for OpenGl" );
    
    m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
  
    wxCHECK_RET( m_glContext, "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, "invalid visual for OpenGl" );
    
    if( other != 0 )
        m_glContext = glXCreateContext( GDK_DISPLAY(), vi, other->m_glContext, GL_TRUE );
    else
        m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
    
    wxCHECK_RET( m_glContext, "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 char *colour)
{
    float r = 0.0;
    float g = 0.0;
    float b = 0.0;
    wxColour *col = wxTheColourDatabase->FindColour(colour);
    if (col)
    {
        r = (float)(col->Red()/256.0);
        g = (float)(col->Green()/256.0);
        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 )
{
    wxGLContext *share= win->m_sharedContext;
    if (share==NULL && 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
//-----------------------------------------------------------------------------

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 );
}

//-----------------------------------------------------------------------------
// "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, wxScrolledWindow)

BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
    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, "required visual couldn't be found" );

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

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

    m_glWidget = m_wxwindow;
    
    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 );

    gtk_signal_connect( GTK_OBJECT(m_wxwindow), "draw",
        GTK_SIGNAL_FUNC(gtk_glwindow_draw_callback), (gpointer)this );
	
    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 (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 );
    if (m_glContext) 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))
{
    int width, height;
    GetClientSize( &width, &height );
    
    if (m_glContext && GTK_WIDGET_REALIZED(m_glWidget) )
    {
        SetCurrent(); 
	
        glViewport(0, 0, (GLint)width, (GLint)height );
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
        glMatrixMode(GL_MODELVIEW);
    }
}

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

void wxGLCanvas::SetColour( const char *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
8b089c5e JS	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: glcanvas.cpp
	3	// Purpose: wxGLCanvas, for using OpenGL/Mesa with wxWindows 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	#ifdef __GNUG__
	13	#pragma implementation "glcanvas.h"
	14	#endif
	15
	16	#include "wx/setup.h"
	17
	18	#if wxUSE_GLCANVAS
	19
	20	#include "wx/glcanvas.h"
	21
	22	#include "wx/frame.h"
	23	#include "wx/colour.h"
	24	#include "wx/module.h"
	25	#include "wx/app.h"
	26
	27	extern "C" {
	28	#include "gtk/gtk.h"
	29	#include "gdk/gdk.h"
	30	#include "gdk/gdkx.h"
	31	}
	32
	33	#include "wx/gtk/win_gtk.h"
	34
	35	//---------------------------------------------------------------------------
	36	// global data
	37	//---------------------------------------------------------------------------
	38
	39	XVisualInfo g_vi = (XVisualInfo) NULL;
	40
	41	//-----------------------------------------------------------------------------
	42	// idle system
	43	//-----------------------------------------------------------------------------
	44
	45	extern void wxapp_install_idle_handler();
	46	extern bool g_isIdle;
	47
	48	//---------------------------------------------------------------------------
	49	// wxGLContext
	50	//---------------------------------------------------------------------------
	51
	52	IMPLEMENT_CLASS(wxGLContext,wxObject)
	53
	54	wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
	55	{
	56	m_window = win;
	57	m_widget = win->m_wxwindow;
	58
	59	wxGLCanvas gc = (wxGLCanvas) win;
	60	XVisualInfo vi = (XVisualInfo ) gc->m_vi;
	61
	62	wxCHECK_RET( vi, "invalid visual for OpenGl" );
	63
	64	m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
65
66	wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
67	}
68
69	wxGLContext::wxGLContext(
70	bool WXUNUSED(isRGB), wxWindow *win,
71	const wxPalette& WXUNUSED(palette),
72	const wxGLContext other / for sharing display lists */
73	)
74	{
75	m_window = win;
76	m_widget = win->m_wxwindow;
77
78	wxGLCanvas gc = (wxGLCanvas) win;
79	XVisualInfo vi = (XVisualInfo ) gc->m_vi;
80
81	wxCHECK_RET( vi, "invalid visual for OpenGl" );
82
83	if( other != 0 )
84	m_glContext = glXCreateContext( GDK_DISPLAY(), vi, other->m_glContext, GL_TRUE );
85	else
86	m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
87
88	wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
89	}
90
91	wxGLContext::~wxGLContext()
92	{
93	if (!m_glContext) return;
94
95	if (m_glContext == glXGetCurrentContext())
96	{
97	glXMakeCurrent( GDK_DISPLAY(), None, NULL);
98	}
99
100	glXDestroyContext( GDK_DISPLAY(), m_glContext );
101	}
102
103	void wxGLContext::SwapBuffers()
104	{
105	if (m_glContext)
106	{
107	GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
108	glXSwapBuffers( GDK_DISPLAY(), GDK_WINDOW_XWINDOW( window ) );
109	}
110	}
111
112	void wxGLContext::SetCurrent()
113	{
114	if (m_glContext)
115	{
116	GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
117	glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window), m_glContext );
118	}
119	}
120
121	void wxGLContext::SetColour(const char *colour)
122	{
123	float r = 0.0;
124	float g = 0.0;
125	float b = 0.0;
126	wxColour *col = wxTheColourDatabase->FindColour(colour);
127	if (col)
128	{
129	r = (float)(col->Red()/256.0);
130	g = (float)(col->Green()/256.0);
131	b = (float)(col->Blue()/256.0);
132	glColor3f( r, g, b);
133	}
134	}
135
136	void wxGLContext::SetupPixelFormat()
137	{
138	}
139
140	void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
141	{
142	}
143
144	wxPalette wxGLContext::CreateDefaultPalette()
145	{
146	return wxNullPalette;
147	}
148
149	//-----------------------------------------------------------------------------
150	// "realize" from m_wxwindow
151	//-----------------------------------------------------------------------------
152
153	static gint
154	gtk_glwindow_realized_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
155	{
156	wxGLContext *share= win->m_sharedContext;
157	if (share==NULL && win->m_sharedContextOf) share=win->m_sharedContextOf->GetContext();
158
159	win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, share );
160
161	return FALSE;
162	}
163
164	//-----------------------------------------------------------------------------
165	// "map" from m_wxwindow
166	//-----------------------------------------------------------------------------
167
168	static gint
169	gtk_glwindow_map_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
170	{
171	if (win->m_glContext/* && win->m_exposed*/)
172	{
173	wxPaintEvent event( win->GetId() );
174	event.SetEventObject( win );
175	win->GetEventHandler()->ProcessEvent( event );
176
177	win->m_exposed = FALSE;
178	win->GetUpdateRegion().Clear();
179	}
180
181	return FALSE;
182	}
183
184	//-----------------------------------------------------------------------------
185	// "expose_event" of m_wxwindow
186	//-----------------------------------------------------------------------------
187
188	static void
189	gtk_glwindow_expose_callback( GtkWidget WXUNUSED(widget), GdkEventExpose gdk_event, wxGLCanvas *win )
190	{
191	if (g_isIdle)
192	wxapp_install_idle_handler();
193
194	win->m_exposed = TRUE;
195
196	win->GetUpdateRegion().Union( gdk_event->area.x,
197	gdk_event->area.y,
198	gdk_event->area.width,
199	gdk_event->area.height );
200	}
201
202	//-----------------------------------------------------------------------------
203	// "draw" of m_wxwindow
204	//-----------------------------------------------------------------------------
205
206	static void
207	gtk_glwindow_draw_callback( GtkWidget WXUNUSED(widget), GdkRectangle rect, wxGLCanvas *win )
208	{
209	if (g_isIdle)
210	wxapp_install_idle_handler();
211
212	win->m_exposed = TRUE;
213
214	win->GetUpdateRegion().Union( rect->x, rect->y,
215	rect->width, rect->height );
216	}
217
218	//-----------------------------------------------------------------------------
219	// "size_allocate" of m_wxwindow
220	//-----------------------------------------------------------------------------
221
222	static void
223	gtk_glcanvas_size_callback( GtkWidget WXUNUSED(widget), GtkAllocation alloc, wxGLCanvas *win )
224	{
225	if (g_isIdle)
226	wxapp_install_idle_handler();
227
228	if (!win->m_hasVMT)
229	return;
230
231	wxSizeEvent event( wxSize(win->m_width,win->m_height), win->GetId() );
232	event.SetEventObject( win );
233	win->GetEventHandler()->ProcessEvent( event );
234	}
235
236	//---------------------------------------------------------------------------
237	// wxGlCanvas
238	//---------------------------------------------------------------------------
239
240	IMPLEMENT_CLASS(wxGLCanvas, wxScrolledWindow)
241
242	BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
243	EVT_SIZE(wxGLCanvas::OnSize)
244	END_EVENT_TABLE()
245
246	wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
247	const wxPoint& pos, const wxSize& size,
248	long style, const wxString& name,
249	int *attribList,
250	const wxPalette& palette )
251	{
252	Create( parent, NULL, NULL, id, pos, size, style, name, attribList, palette );
253	}
254
255	wxGLCanvas::wxGLCanvas( wxWindow *parent,
256	const wxGLContext *shared,
257	wxWindowID id,
258	const wxPoint& pos, const wxSize& size,
259	long style, const wxString& name,
260	int *attribList,
261	const wxPalette& palette )
262	{
263	Create( parent, shared, NULL, id, pos, size, style, name, attribList, palette );
264	}
265
266	wxGLCanvas::wxGLCanvas( wxWindow *parent,
267	const wxGLCanvas *shared,
268	wxWindowID id,
269	const wxPoint& pos, const wxSize& size,
270	long style, const wxString& name,
271	int *attribList,
272	const wxPalette& palette )
273	{
274	Create( parent, NULL, shared, id, pos, size, style, name, attribList, palette );
275	}
276
277	bool wxGLCanvas::Create( wxWindow *parent,
278	const wxGLContext *shared,
279	const wxGLCanvas *shared_context_of,
280	wxWindowID id,
281	const wxPoint& pos, const wxSize& size,
282	long style, const wxString& name,
283	int *attribList,
284	const wxPalette& palette)
285	{
286	m_sharedContext = (wxGLContext*)shared; // const_cast
287	m_sharedContextOf = (wxGLCanvas*)shared_context_of; // const_cast
288	m_glContext = (wxGLContext*) NULL;
289
290	m_exposed = FALSE;
291	m_noExpose = TRUE;
292	m_nativeSizeEvent = TRUE;
293
a6f5aa49 VZ	294	XVisualInfo *vi = NULL;
	295	if (wxTheApp->m_glVisualInfo != NULL) {
	296	vi = (XVisualInfo *) wxTheApp->m_glVisualInfo;
	297	m_canFreeVi = FALSE; // owned by wxTheApp - don't free upon destruction
	298	} else {
	299	vi = (XVisualInfo *) ChooseGLVisual(attribList);
	300	m_canFreeVi = TRUE;
	301	}
	302	m_vi = vi; // save for later use
	303
	304	wxCHECK_MSG( m_vi, FALSE, "required visual couldn't be found" );
	305
	306	GdkVisual *visual = gdkx_visual_get( vi->visualid );
	307	GdkColormap *colormap = gdk_colormap_new( gdkx_visual_get(vi->visualid), TRUE );
	308
	309	gtk_widget_push_colormap( colormap );
	310	gtk_widget_push_visual( visual );
	311
	312	wxScrolledWindow::Create( parent, id, pos, size, style, name );
	313
	314	m_glWidget = m_wxwindow;
	315
	316	gtk_pizza_set_clear( GTK_PIZZA(m_wxwindow), FALSE );
	317
	318	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "realize",
	319	GTK_SIGNAL_FUNC(gtk_glwindow_realized_callback), (gpointer) this );
	320
	321	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "map",
	322	GTK_SIGNAL_FUNC(gtk_glwindow_map_callback), (gpointer) this );
	323
	324	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "expose_event",
	325	GTK_SIGNAL_FUNC(gtk_glwindow_expose_callback), (gpointer)this );
	326
	327	gtk_signal_connect( GTK_OBJECT(m_wxwindow), "draw",
	328	GTK_SIGNAL_FUNC(gtk_glwindow_draw_callback), (gpointer)this );
	329
	330	gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
	331	GTK_SIGNAL_FUNC(gtk_glcanvas_size_callback), (gpointer)this );
	332
	333	gtk_widget_pop_visual();
	334	gtk_widget_pop_colormap();
	335
	336	if (GTK_WIDGET_REALIZED(m_wxwindow))
	337	gtk_glwindow_realized_callback( m_wxwindow, this );
	338
	339	if (GTK_WIDGET_MAPPED(m_wxwindow))
	340	gtk_glwindow_map_callback( m_wxwindow, this );
	341
	342	return TRUE;
	343	}
	344
	345	wxGLCanvas::~wxGLCanvas()
	346	{
	347	XVisualInfo vi = (XVisualInfo ) m_vi;
	348
	349	if (vi && m_canFreeVi) XFree( vi );
	350	if (m_glContext) delete m_glContext;
	351	}
	352
	353	void* wxGLCanvas::ChooseGLVisual(int *attribList)
	354	{
	355	int data[512];
8b089c5e JS	356	if (!attribList)
8b089c5e JS	357	{
0f8d11dc UN	358	// default settings if attriblist = 0
	359	data[0] = GLX_RGBA;
	360	data[1] = GLX_DOUBLEBUFFER;
e6afccba UN	361	data[2] = GLX_DEPTH_SIZE; data[3] = 1;
	362	data[4] = GLX_RED_SIZE; data[5] = 1;
	363	data[6] = GLX_GREEN_SIZE; data[7] = 1;
	364	data[8] = GLX_BLUE_SIZE; data[9] = 1;
	365	data[10] = GLX_ALPHA_SIZE; data[11] = 0;
aff5d591	366	data[12] = None;
0f8d11dc	367
8b089c5e JS	368	attribList = (int*) data;
	369	}
	370	else
	371	{
83918ccc	372	int arg=0, p=0;
8b089c5e	373
0f8d11dc	374	while( (attribList[arg]!=0) && (p<510) )
8b089c5e JS	375	{
	376	switch( attribList[arg++] )
	377	{
	378	case WX_GL_RGBA: data[p++] = GLX_RGBA; break;
0f8d11dc UN	379	case WX_GL_BUFFER_SIZE:
	380	data[p++]=GLX_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
	381	case WX_GL_LEVEL:
	382	data[p++]=GLX_LEVEL; data[p++]=attribList[arg++]; break;
8b089c5e	383	case WX_GL_DOUBLEBUFFER: data[p++] = GLX_DOUBLEBUFFER; break;
0f8d11dc UN	384	case WX_GL_STEREO: data[p++] = GLX_STEREO; break;
	385	case WX_GL_AUX_BUFFERS:
	386	data[p++]=GLX_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
8b089c5e JS	387	case WX_GL_MIN_RED:
	388	data[p++]=GLX_RED_SIZE; data[p++]=attribList[arg++]; break;
	389	case WX_GL_MIN_GREEN:
	390	data[p++]=GLX_GREEN_SIZE; data[p++]=attribList[arg++]; break;
	391	case WX_GL_MIN_BLUE:
	392	data[p++]=GLX_BLUE_SIZE; data[p++]=attribList[arg++]; break;
0f8d11dc UN	393	case WX_GL_MIN_ALPHA:
	394	data[p++]=GLX_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
	395	case WX_GL_DEPTH_SIZE:
	396	data[p++]=GLX_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
	397	case WX_GL_STENCIL_SIZE:
	398	data[p++]=GLX_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
	399	case WX_GL_MIN_ACCUM_RED:
	400	data[p++]=GLX_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
	401	case WX_GL_MIN_ACCUM_GREEN:
	402	data[p++]=GLX_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
	403	case WX_GL_MIN_ACCUM_BLUE:
	404	data[p++]=GLX_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
	405	case WX_GL_MIN_ACCUM_ALPHA:
	406	data[p++]=GLX_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
8b089c5e JS	407	default:
	408	break;
	409	}
	410	}
	411	data[p] = 0;
	412
	413	attribList = (int*) data;
	414	}
	415
	416
	417	Display *dpy = GDK_DISPLAY();
	418
a6f5aa49	419	return glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
8b089c5e JS	420	}
	421
	422	void wxGLCanvas::SwapBuffers()
	423	{
	424	if (m_glContext) m_glContext->SwapBuffers();
	425	}
	426
	427	void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
	428	{
	429	int width, height;
	430	GetClientSize( &width, &height );
	431
	432	if (m_glContext && GTK_WIDGET_REALIZED(m_glWidget) )
	433	{
	434	SetCurrent();
	435
	436	glViewport(0, 0, (GLint)width, (GLint)height );
	437	glMatrixMode(GL_PROJECTION);
	438	glLoadIdentity();
	439	glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
	440	glMatrixMode(GL_MODELVIEW);
	441	}
	442	}
	443
	444	void wxGLCanvas::SetCurrent()
	445	{
	446	if (m_glContext) m_glContext->SetCurrent();
	447	}
	448
	449	void wxGLCanvas::SetColour( const char *colour )
	450	{
	451	if (m_glContext) m_glContext->SetColour( colour );
	452	}
	453
	454	void wxGLCanvas::OnInternalIdle()
	455	{
	456	if (m_glContext && m_exposed)
	457	{
	458	wxPaintEvent event( GetId() );
	459	event.SetEventObject( this );
	460	GetEventHandler()->ProcessEvent( event );
	461
	462	m_exposed = FALSE;
	463	GetUpdateRegion().Clear();
	464	}
	465
	466	wxWindow::OnInternalIdle();
	467	}
	468
a6f5aa49 VZ	469
	470
	471	//---------------------------------------------------------------------------
	472	// wxGLApp
	473	//---------------------------------------------------------------------------
	474
	475	IMPLEMENT_CLASS(wxGLApp, wxApp)
	476
	477	wxGLApp::~wxGLApp()
	478	{
	479	if (m_glVisualInfo) XFree(m_glVisualInfo);
	480	}
	481
	482	bool wxGLApp::InitGLVisual(int *attribList)
	483	{
	484	if (m_glVisualInfo) XFree(m_glVisualInfo);
	485	m_glVisualInfo = wxGLCanvas::ChooseGLVisual(attribList);
	486	return (m_glVisualInfo != NULL);
	487	}
	488
8b089c5e JS	489	#endif
	490	// wxUSE_GLCANVAS
	491