+++ /dev/null
-/////////////////////////////////////////////////////////////////////////////
-// 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 "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;
-
- if (!attribList)
- {
- int data[] = { GLX_RGBA,
- GLX_DOUBLEBUFFER,
- GLX_DEPTH_SIZE, 1, // use largest available depth buffer
- GLX_RED_SIZE, 1,
- GLX_GREEN_SIZE, 1,
- GLX_BLUE_SIZE, 1,
- GLX_ALPHA_SIZE, 0,
- None };
- attribList = (int*) data;
- }
- else
- {
- int data[512], arg=0, p=0;
-
- while( (attribList[arg]!=0) && (p<512) )
- {
- switch( attribList[arg++] )
- {
- case WX_GL_RGBA: data[p++] = GLX_RGBA; break;
- case WX_GL_DOUBLEBUFFER: data[p++] = GLX_DOUBLEBUFFER; break;
- case WX_GL_DEPTH_SIZE:
- data[p++]=GLX_DEPTH_SIZE; 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;
- default:
- break;
- }
- }
- data[p] = 0;
-
- attribList = (int*) data;
- }
-
-
- Display *dpy = GDK_DISPLAY();
-
- XVisualInfo *vi = glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
-
- m_vi = vi; // safe 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();
-
- return TRUE;
-}
-
-wxGLCanvas::~wxGLCanvas()
-{
- XVisualInfo *vi = (XVisualInfo *) m_vi;
-
- if (vi) XFree( vi );
- if (m_glContext) delete m_glContext;
-}
-
-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();
-}
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