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****************************************************************************/

#include <qscreenproxy_qws.h>

#ifndef QT_NO_QWS_PROXYSCREEN

#include <qregexp.h>

QT_BEGIN_NAMESPACE
#ifndef QT_NO_QWS_CURSOR

/*!
    \class QProxyScreenCursor
    \since 4.5
    \ingroup qws
    \brief The QProxyScreenCursor class provides a generic interface to
    QScreenCursor implementations.
*/

/*!
    Constructs a proxy screen cursor.
*/
QProxyScreenCursor::QProxyScreenCursor()
    : QScreenCursor(), realCursor(0), d_ptr(0)
{
}

/*!
    Destroys the proxy screen cursor.
*/
QProxyScreenCursor::~QProxyScreenCursor()
{
}

/*!
    Sets the real screen cursor to be used for the proxy screen cursor to
    the \a cursor specified.

    \sa screenCursor()
*/
void QProxyScreenCursor::setScreenCursor(QScreenCursor *cursor)
{
    realCursor = cursor;
    configure();
}

/*!
    Returns the real screen cursor used by the proxy screen cursor.

    \sa setScreenCursor()
*/
QScreenCursor* QProxyScreenCursor::screenCursor() const
{
    return realCursor;
}

/*!
    \reimp
*/
void QProxyScreenCursor::set(const QImage &image, int hotx, int hoty)
{
    if (realCursor) {
        hotspot = QPoint(hotx, hoty);
        cursor = image;
        size = image.size();
        realCursor->set(image, hotx, hoty);
    } else {
        QScreenCursor::set(image, hotx, hoty);
    }
}

/*!
    \reimp
*/
void QProxyScreenCursor::move(int x, int y)
{
    if (realCursor) {
        pos = QPoint(x, y);
        realCursor->move(x, y);
    } else {
        QScreenCursor::move(x, y);
    }
}

/*!
    \reimp
*/
void QProxyScreenCursor::show()
{
    if (realCursor) {
        realCursor->show();
        enable = true;
    } else {
        QScreenCursor::show();
    }
}

/*!
    \reimp
*/
void QProxyScreenCursor::hide()
{
    if (realCursor) {
        realCursor->hide();
        enable = false;
    } else {
        QScreenCursor::hide();
    }
}

/*!
    \internal
*/
void QProxyScreenCursor::configure()
{
    if (!realCursor)
        return;

    cursor = realCursor->cursor;
    size = realCursor->size;
    pos = realCursor->pos;
    hotspot = realCursor->hotspot;
    enable = realCursor->enable;
    hwaccel = realCursor->hwaccel;
    supportsAlpha = realCursor->supportsAlpha;
}

#endif // QT_NO_QWS_CURSOR

/*!
    \class QProxyScreen
    \ingroup qws
    \brief The QProxyScreen class provides a generic interface to QScreen implementations.
*/

/*!
    \fn QProxyScreen::QProxyScreen(int displayId, ClassId classId)

    Constructs a proxy screen with the given \a displayId and \a classId.
*/
QProxyScreen::QProxyScreen(int displayId, QScreen::ClassId classId)
    : QScreen(displayId, classId), realScreen(0), d_ptr(0)
{
}

/*!
    Destroys the proxy screen.
*/
QProxyScreen::~QProxyScreen()
{
}

/*!
    Sets the real \a screen to be used by the proxy screen.

    \sa screen()
*/
void QProxyScreen::setScreen(QScreen *screen)
{
    realScreen = screen;
    configure();
}

/*!
    Returns the real screen used by the proxy screen.

    \sa setScreen()
*/
QScreen* QProxyScreen::screen() const
{
    return realScreen;
}


/*!
    \internal
*/
void QProxyScreen::configure()
{
    if (!realScreen)
        return;

    d = realScreen->depth();
    w = realScreen->width();
    h = realScreen->height();
    dw = realScreen->deviceWidth();
    dh = realScreen->deviceHeight();
    lstep = realScreen->linestep();
    data = realScreen->base();
    lstep = realScreen->linestep();
    size = realScreen->screenSize();
    physWidth = realScreen->physicalWidth();
    physHeight = realScreen->physicalHeight();
    pixeltype = realScreen->pixelType();
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
    setFrameBufferLittleEndian(realScreen->frameBufferLittleEndian());
#endif

    setOffset(realScreen->offset());
    setPixelFormat(realScreen->pixelFormat());

#ifdef QT_QWS_CLIENTBLIT
    setSupportsBlitInClients(realScreen->supportsBlitInClients());
#endif
}

/*!
    \internal
    Returns the display ID that corresponds to the given \a spec.
*/
static int getDisplayId(const QString &spec)
{
    QRegExp regexp(QLatin1String(":(\\d+)\\b"));
    if (regexp.lastIndexIn(spec) != -1) {
        const QString capture = regexp.cap(1);
        return capture.toInt();
    }
    return 0;
}

/*!
    \reimp
*/
bool QProxyScreen::connect(const QString &displaySpec)
{
    const int id = getDisplayId(displaySpec);
    realScreen = qt_get_screen(id, displaySpec.toLatin1().constData());
    configure();

    return true;
}

/*!
    \reimp
*/
void QProxyScreen::exposeRegion(QRegion r, int changing)
{
    if (!realScreen) {
        QScreen::exposeRegion(r, changing);
        return;
    }

    realScreen->exposeRegion(r, changing);
    r &= realScreen->region();

    const QVector<QRect> rects = r.rects();
    for (int i = 0; i < rects.size(); ++i)
        setDirty(rects.at(i));
}

/*!
    \reimp
*/
void QProxyScreen::blit(const QImage &image, const QPoint &topLeft,
                        const QRegion &region)
{
    if (!realScreen) {
        QScreen::blit(image, topLeft, region);
        return;
    }

    realScreen->blit(image, topLeft, region);
}

/*!
    \reimp
*/
void QProxyScreen::solidFill(const QColor &color, const QRegion &region)
{
    if (!realScreen) {
        QScreen::solidFill(color, region);
        return;
    }
    realScreen->solidFill(color, region);
}

/*!
    \reimp
*/
QSize QProxyScreen::mapToDevice(const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapToDevice(s);

    return realScreen->mapToDevice(s);
}

/*!
    \reimp
*/
QSize QProxyScreen::mapFromDevice(const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapFromDevice(s);

    return realScreen->mapFromDevice(s);
}

/*!
    \reimp
*/
QPoint QProxyScreen::mapToDevice(const QPoint &p, const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapToDevice(p, s);

    return realScreen->mapToDevice(p, s);
}

/*!
    \reimp
*/
QPoint QProxyScreen::mapFromDevice(const QPoint &p, const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapFromDevice(p, s);

    return realScreen->mapFromDevice(p, s);
}

/*!
    \reimp
*/
QRect QProxyScreen::mapToDevice(const QRect &r, const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapToDevice(r, s);

    return realScreen->mapToDevice(r, s);
}

/*!
    \reimp
*/
QRect QProxyScreen::mapFromDevice(const QRect &r, const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapFromDevice(r, s);

    return realScreen->mapFromDevice(r, s);
}

/*!
    \reimp
*/
QRegion QProxyScreen::mapToDevice(const QRegion &r, const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapToDevice(r, s);

    return realScreen->mapToDevice(r, s);
}

/*!
    \reimp
*/
QRegion QProxyScreen::mapFromDevice(const QRegion &r, const QSize &s) const
{
    if (!realScreen)
        return QScreen::mapFromDevice(r, s);

    return realScreen->mapFromDevice(r, s);
}

/*!
    \reimp
*/
void QProxyScreen::disconnect()
{
    if (realScreen) {
        realScreen->disconnect();
        delete realScreen;
        realScreen = 0;
    }
}

/*!
*/
bool QProxyScreen::initDevice()
{
    if (realScreen)
        return realScreen->initDevice();

    return false;
}

/*!
    \reimp
*/
void QProxyScreen::shutdownDevice()
{
    if (realScreen)
        realScreen->shutdownDevice();
}

/*!
    \reimp
*/
void QProxyScreen::setMode(int w,int h, int d)
{
    if (realScreen) {
        realScreen->setMode(w, h, d);
    } else {
        QScreen::dw = QScreen::w = w;
        QScreen::dh = QScreen::h = h;
        QScreen::d = d;
    }
    configure();
    exposeRegion(region(), 0);
}

/*!
    \reimp
*/
bool QProxyScreen::supportsDepth(int depth) const
{
    if (realScreen)
        return realScreen->supportsDepth(depth);
    return false;
}

/*!
    \reimp
*/
void QProxyScreen::save()
{
    if (realScreen)
        realScreen->save();
    QScreen::save();
}

/*!
    \reimp
*/
void QProxyScreen::restore()
{
    if (realScreen)
        realScreen->restore();
    QScreen::restore();
}

/*!
    \reimp
*/
void QProxyScreen::blank(bool on)
{
    if (realScreen)
        realScreen->blank(on);
}

/*!
    \reimp
*/
bool QProxyScreen::onCard(const unsigned char *ptr) const
{
    if (realScreen)
        return realScreen->onCard(ptr);
    return false;
}

/*!
    \reimp
*/
bool QProxyScreen::onCard(const unsigned char *ptr, ulong &offset) const
{
    if (realScreen)
        return realScreen->onCard(ptr, offset);
    return false;
}

/*!
    \reimp
*/
bool QProxyScreen::isInterlaced() const
{
    if (realScreen)
        return realScreen->isInterlaced();
    return false;
}

/*!
    \reimp
*/
bool QProxyScreen::isTransformed() const
{
    if (realScreen)
        return realScreen->isTransformed();
    return QScreen::isTransformed();
}

/*!
    \reimp
*/
int QProxyScreen::transformOrientation() const
{
    if (realScreen)
        return realScreen->transformOrientation();
    return QScreen::transformOrientation();
}

/*!
\internal
*/
int QProxyScreen::memoryNeeded(const QString &str)
{
    if (realScreen)
        return realScreen->memoryNeeded(str);
    else
        return QScreen::memoryNeeded(str);
}

/*!
\internal
*/
int QProxyScreen::sharedRamSize(void *ptr)
{
    if (realScreen)
        return realScreen->sharedRamSize(ptr);
    else
        return QScreen::sharedRamSize(ptr);
}

/*!
\internal
*/
void QProxyScreen::haltUpdates()
{
    if (realScreen)
        realScreen->haltUpdates();
}

/*!
\internal
*/
void QProxyScreen::resumeUpdates()
{
    if (realScreen)
        realScreen->resumeUpdates();
}

/*!
    \reimp
*/
void QProxyScreen::setDirty(const QRect &rect)
{
    if (realScreen)
        realScreen->setDirty(rect);
}

/*!
    \reimp
*/
QWSWindowSurface* QProxyScreen::createSurface(QWidget *widget) const
{
    if (realScreen)
        return realScreen->createSurface(widget);

    return QScreen::createSurface(widget);
}

/*!
    \reimp
*/
QWSWindowSurface* QProxyScreen::createSurface(const QString &key) const
{
    if (realScreen)
        return realScreen->createSurface(key);

    return QScreen::createSurface(key);
}

/*!
    \reimp
*/
QList<QScreen*> QProxyScreen::subScreens() const
{
    if (realScreen)
        return realScreen->subScreens();

    return QScreen::subScreens();
}

/*!
    \reimp
*/
QRegion QProxyScreen::region() const
{
    if (realScreen)
        return realScreen->region();
    else
        return QScreen::region();
}

QT_END_NAMESPACE

#endif // QT_NO_QWS_PROXYSCREEN