AdapterWidget.h

/*
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to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
/***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************/
#ifndef ADAPTERWIDGET_H
#define ADAPTERWIDGET_H

#include <QtCore>
#include <QtGui>
#include <QtOpenGL>
#include <osgViewer/Viewer>
#include <osg/Vec3>

class AdapterWidget : public QGLWidget
{
    Q_OBJECT
    public:
        AdapterWidget ( QWidget * parent = 0, const char * name = 0, const QGLWidget * shareWidget = 0);

        virtual ~AdapterWidget() {}

        osgViewer::GraphicsWindow* getGraphicsWindow() { return _gw.get(); }
        const osgViewer::GraphicsWindow* getGraphicsWindow() const { return _gw.get(); }

    signals:
        void mouseMoved();
    protected:

        void init();

        virtual void resizeGL ( int width, int height );
        virtual void keyPressEvent ( QKeyEvent* event );
        virtual void keyReleaseEvent ( QKeyEvent* event );
        virtual void mousePressEvent ( QMouseEvent* event );
        virtual void mouseReleaseEvent ( QMouseEvent* event );
        virtual void mouseMoveEvent ( QMouseEvent* event );

        int button;
        osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> _gw;
};


class ViewerQT : public osgViewer::Viewer, public AdapterWidget
{
    public:
        ViewerQT ( QWidget * parent = 0, const char * name = 0, const QGLWidget * shareWidget = 0) : AdapterWidget ( parent, name, shareWidget)
        {
            getCamera()->setViewport ( new osg::Viewport ( 0,0,width(),height() ) );
            getCamera()->setProjectionMatrixAsPerspective ( 30.0f, static_cast<double> ( width() ) /static_cast<double> ( height() ), 1.0f, 10000.0f );
            QColor bg = palette().window().color();
            getCamera()->setClearColor(osg::Vec4(bg.redF(), bg.greenF(), bg.blueF(), 0.0));
            getCamera()->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
            getCamera()->setGraphicsContext ( getGraphicsWindow() );

            setThreadingModel ( osgViewer::Viewer::SingleThreaded );

            connect ( &_timer, SIGNAL ( timeout() ), this, SLOT ( updateGL() ) );
        }

        virtual void showEvent(QShowEvent *)
        {
            _timer.start(10);
        }

        virtual void paintGL()
        {
            frame();
        }

    protected:

        QTimer _timer;
};
#endif