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#include "simpleglwindowsurface.h"
#include "simpleglscreen.h"
#include <QDebug>

SimpleGLWindowSurface::SimpleGLWindowSurface(QWidget *w, SimpleGLScreen *s)
    : QWSGLWindowSurface(w), widget(w), screen(s)
{
    setSurfaceFlags(QWSWindowSurface::Opaque);
}

SimpleGLWindowSurface::SimpleGLWindowSurface()
    : QWSGLWindowSurface(), widget(NULL), screen(NULL)
{
    setSurfaceFlags(QWSWindowSurface::Opaque);
}

SimpleGLWindowSurface::~SimpleGLWindowSurface()
{
}

bool SimpleGLWindowSurface::isValid() const
{
    return (widget != 0);
}

QByteArray SimpleGLWindowSurface::permanentState() const
{
    // Nothing interesting to pass to the server just yet.
    return QByteArray();
}

void SimpleGLWindowSurface::setPermanentState(const QByteArray &state)
{
    Q_UNUSED(state);
}

void SimpleGLWindowSurface::flush
        (QWidget *widget, const QRegion &region, const QPoint &offset)
{
    // The GL paint engine is responsible for the swapBuffers() call.
    // If we were to call the base class's implementation of flush()
    // then it would fetch the image() and try manually blit it to
    // the screeen.
    Q_UNUSED(widget);
    Q_UNUSED(region);
    Q_UNUSED(offset);
}

QImage SimpleGLWindowSurface::image() const
{
    // No cross-platform way to fetch the window contents.
    return QImage(16, 16, screen->pixelFormat());
}

QPaintDevice *SimpleGLWindowSurface::paintDevice()
{
    return widget;
}