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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights.  These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QPAINTDEVICEWINDOW_H
#define QPAINTDEVICEWINDOW_H

#include <QtGui/QWindow>
#include <QtGui/QPaintDevice>

QT_BEGIN_NAMESPACE

class QPaintDeviceWindowPrivate;
class QPaintEvent;

class Q_GUI_EXPORT QPaintDeviceWindow : public QWindow, public QPaintDevice
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QPaintDeviceWindow)

public:
    void update(const QRect &rect);
    void update(const QRegion &region);

    using QWindow::width;
    using QWindow::height;
    using QWindow::devicePixelRatio;

public Q_SLOTS:
    void update();

protected:
    virtual void paintEvent(QPaintEvent *event);

    int metric(PaintDeviceMetric metric) const Q_DECL_OVERRIDE;
    void exposeEvent(QExposeEvent *) Q_DECL_OVERRIDE;
    bool event(QEvent *event) Q_DECL_OVERRIDE;

    QPaintDeviceWindow(QPaintDeviceWindowPrivate &dd, QWindow *parent);

private:
    QPaintEngine *paintEngine() const Q_DECL_OVERRIDE;
    Q_DISABLE_COPY(QPaintDeviceWindow)
};

QT_END_NAMESPACE

#endif