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# svgalibsurface.cpp Example File
qtopiacore/svgalib/svgalibsurface.cpp

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     ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 as published by the Free Software Foundation
     ** and appearing in the file LICENSE.GPL included in the packaging of
     ** this file.  Please review the following information to ensure GNU
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     ** http://www.trolltech.com/products/qt/opensource.html
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     ** review the following information:
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     #include "svgalibsurface.h"
     #include "svgalibpaintdevice.h"

     #include <vgagl.h>

     SvgalibSurface::SvgalibSurface() : QWSWindowSurface(), pdevice(0)
     {
         setSurfaceFlags(Opaque);
     }

     SvgalibSurface::SvgalibSurface(QWidget *w)
         : QWSWindowSurface(w)
     {
         setSurfaceFlags(Opaque);
         pdevice = new SvgalibPaintDevice(w);
     }

     SvgalibSurface::~SvgalibSurface()
     {
         delete pdevice;
     }

     void SvgalibSurface::setGeometry(const QRect &rect)
     {
         brect = rect;
         QWSWindowSurface::setGeometry(rect);
     }

     QPoint SvgalibSurface::painterOffset() const
     {
         return brect.topLeft() + QWSWindowSurface::painterOffset();
     }

     void SvgalibSurface::scroll(const QRegion &region, int dx, int dy)
     {
         const QVector<QRect> rects = region.rects();
         for (int i = 0; i < rects.size(); ++i) {
             const QRect r = rects.at(i);
             gl_copybox(r.left(), r.top(), r.width(), r.height(),
                        r.left() + dx, r.top() + dy);
         }
     }