osg osgViewer::View::setUpViewInWindow()

void View::setUpViewInWindow(int x, int y, int width, int height, unsigned int screenNum)
{
    apply(new osgViewer::SingleWindow(x, y, width, height, screenNum));
}

void View::apply(ViewConfig* config)
{
    if (config)
    {
        OSG_INFO"Applying osgViewer::ViewConfig : "className()std::endl;
        config->configure(*this);
    }
    _lastAppliedViewConfig = config;
}

View::View():
    _fusionDistanceMode(osgUtil::SceneView::PROPORTIONAL_TO_SCREEN_DISTANCE),
    _fusionDistanceValue(1.0f)
{
    // OSG_NOTICE

    _startTick = 0;

    _frameStamp = new osg::FrameStamp;
    _frameStamp->setFrameNumber(0);
    _frameStamp->setReferenceTime(0);
    _frameStamp->setSimulationTime(0);

    _scene = new Scene;

    // make sure View is safe to reference multi-threaded.
    setThreadSafeRefUnref(true);

    // need to attach a Renderer to the master camera which has been default constructed
    getCamera()->setRenderer(createRenderer(getCamera()));

    setEventQueue(new osgGA::EventQueue);

    setStats(new osg::Stats("View"));
}

View::View(const osgViewer::View& view, const osg::CopyOp& copyop):
    osg::Object(view, copyop),
    osg::View(view,copyop),
    osgGA::GUIActionAdapter(),
    _startTick(0),
    _fusionDistanceMode(view._fusionDistanceMode),
    _fusionDistanceValue(view._fusionDistanceValue)
{
    _scene = new Scene;

    // need to attach a Renderer to the master camera which has been default constructed
    getCamera()->setRenderer(createRenderer(getCamera()));

    setEventQueue(new osgGA::EventQueue);

    setStats(new osg::Stats("View"));
}

void SingleWindow::configure(osgViewer::View& view) const
{
    osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
    if (!wsi)
    {
        OSG_NOTICE"SingleWindow::configure() : Error, no WindowSystemInterface available, cannot create windows."std::endl;
        return;
    }

    osg::DisplaySettings* ds = getActiveDisplaySetting(view);
    
    osg::ref_ptr<:graphicscontext::traits> traits = new osg::GraphicsContext::Traits(ds);

    traits->readDISPLAY();
    if (traits->displayNum0) traits->displayNum = 0;

    traits->screenNum = _screenNum;
    traits->x = _x;
    traits->y = _y;
    traits->width = _width;
    traits->height = _height;
    traits->windowDecoration = _windowDecoration;
    traits->overrideRedirect = _overrideRedirect;
    traits->doubleBuffer = true;
    traits->sharedContext = 0;
    
    if (traits->width0 || traits->height0 ) 
    {
        osg::GraphicsContext::ScreenIdentifier si;
        si.readDISPLAY();

        // displayNum has not been set so reset it to 0.
        if (si.displayNum0) si.displayNum = 0;

        si.screenNum = _screenNum;

        unsigned int width, height;
        wsi->getScreenResolution(si, width, height);
        if (traits->width0) traits->width = width;
        if (traits->height0) traits->height = height;
    }
    
    osg::ref_ptr<:graphicscontext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());

    view.getCamera()->setGraphicsContext(gc.get());

    osgViewer::GraphicsWindow* gw = dynamic_cast<:graphicswindow>(gc.get());
    if (gw)
    {
        OSG_INFO"SingleWindow::configure - GraphicsWindow has been created successfully."std::endl;
        gw->getEventQueue()->getCurrentEventState()->setWindowRectangle(traits->x, traits->y, traits->width, traits->height );
    }
    else
    {
        OSG_NOTICE"SingleWindow::configure - GraphicsWindow has not been created successfully."std::endl;
        return;
    }

    double fovy, aspectRatio, zNear, zFar;
    view.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);

    double newAspectRatio = double(traits->width) / double(traits->height);
    double aspectRatioChange = newAspectRatio / aspectRatio;
    if (aspectRatioChange != 1.0)
    {
        view.getCamera()->getProjectionMatrix() *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0);
    }

    view.getCamera()->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));

    GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;

    view.getCamera()->setDrawBuffer(buffer);
    view.getCamera()->setReadBuffer(buffer);

    if (ds->getKeystoneHint())
    {
        if (ds->getKeystoneHint() && !ds->getKeystoneFileNames().empty()) 
        {
            osgViewer::Keystone::loadKeystoneFiles(ds);
        }
        if (ds->getKeystones().empty()) ds->getKeystones().push_back(new Keystone);
        
        view.assignStereoOrKeystoneToCamera(view.getCamera(), ds);
    }
    else if (ds->getStereo() && ds->getUseSceneViewForStereoHint())
    {
        view.assignStereoOrKeystoneToCamera(view.getCamera(), ds);
    }
}