View Creation.cpp

Handle(V3d_Viewer) wxOCEWindow::Viewer (wxWindow* panel, 
                                           const Standard_ExtString theName,
                                           const Standard_CString theDomain,
                                           const Standard_Real theViewSize,
                                           const V3d_TypeOfOrientation theViewProj,
                                           const Standard_Boolean theComputedMode,
                                           const Standard_Boolean theDefaultComputedMode )
{
  static Handle(OpenGl_GraphicDriver) aGraphicDriver;

 aDisplayConnection = new Aspect_DisplayConnection();
  
if (aGraphicDriver.IsNull())
  {
    aDisplayConnection = new Aspect_DisplayConnection ();

    aGraphicDriver = new OpenGl_GraphicDriver (aDisplayConnection);
  }
Handle(V3d_Viewer)  v = new V3d_Viewer (aGraphicDriver,
                         theName,
                         theDomain,
                         theViewSize,
                         theViewProj,
                         Quantity_NOC_GRAY30,
                         V3d_ZBUFFER,
                         V3d_GOURAUD,
                         V3d_WAIT,
                         theComputedMode,
                         theDefaultComputedMode,
                         V3d_TEX_NONE);
                         
    //Create the View
    mView = v->CreateView();
    
    //This works in GTK 1,0 apperantly but breaks in GTK 2.0...need a better solution
    //GdkWindow* draw_window = GTK_PIZZA(this)->bin_window;
    
    //First Retreive the GTK Widget (This is handled differently in MSW and MAC)
    GtkWidget* widget = panel->GetHandle();
    
    // Mandatory. Otherwise, a segfault happens. (Learned this one the hard way)
    gtk_widget_realize( widget );   
    
    //Old Habbts I guess...
    gtk_widget_set_double_buffered(widget, 1);
    
    //Now retireve the X11 Window
    Window wid = GDK_WINDOW_XWINDOW( widget->window ); 
   
    //The above line can be done with the following as well.
    // Window wid = gdk_x11_drawable_get_xid(gtk_widget_get_window(panel->GetHandle()));
 
    XSync(GDK_WINDOW_XDISPLAY(widget->window), False);
    
    //Now create the Xw window as a wrapper of the window we've so tirelessly had to go and retreive.
    wind = new Xw_Window(aDisplayConnection, wid);
    
    //Un Comment this line below to create a seperate window (defeats the purpose of this hole exercise though)
    //Handle(Xw_Window) wind = new Xw_Window(aDisplayConnection,"test", 20,20,400,400);
    
    //Now set the Window to the View
    mView->SetWindow(wind);
    
    //Don't forget to Map the Window
    if(!wind->IsMapped()) wind->Map();
    
    //Now Draw the Scene
    mView->Redraw();
  
    return v;
}