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

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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)
     {
         QWSWindowSurface::setGeometry(rect);
     }

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

     bool 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);
         }

         return true;
     }