source: trunk/src/gui/embedded/qdirectpainter_qws.h@ 855

/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDIRECTPAINTER_QWS_H
#define QDIRECTPAINTER_QWS_H

#include <QtCore/qobject.h>
#include <QtGui/qregion.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#ifndef QT_NO_DIRECTPAINTER
class QDirectPainterPrivate;
class QWSEmbedEvent;

class Q_GUI_EXPORT QDirectPainter : public QObject {
    Q_OBJECT
    Q_DECLARE_PRIVATE(QDirectPainter)
public:

    enum SurfaceFlag { NonReserved = 0,
                       Reserved = 1,
                       ReservedSynchronous = 3 };

    explicit QDirectPainter(QObject *parentObject = 0, SurfaceFlag flag = NonReserved);
    ~QDirectPainter();

    void setRegion(const QRegion&);
    QRegion requestedRegion() const;
    QRegion allocatedRegion() const;

    void setGeometry(const QRect&);
    QRect geometry() const;

    WId winId() const;
    virtual void regionChanged(const QRegion &exposedRegion);

    void startPainting(bool lockDisplay = true);
    void endPainting();
    void endPainting(const QRegion &region);
    void flush(const QRegion &region);

    void raise();
    void lower();


    static QRegion reserveRegion(const QRegion&);
    static QRegion reservedRegion();
    static QRegion region() { return reservedRegion(); }