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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qblittable_p.h"

#ifndef QT_NO_BLITTABLE
QT_BEGIN_NAMESPACE

class QBlittablePrivate
{
public:
    QBlittablePrivate(const QSize &size, QBlittable::Capabilities caps)
        : caps(caps), m_size(size), locked(false), cachedImg(0)
    {}
    QBlittable::Capabilities caps;
    QSize m_size;
    bool locked;
    QImage *cachedImg;
};


QBlittable::QBlittable(const QSize &size, Capabilities caps)
    : d_ptr(new QBlittablePrivate(size,caps))
{
}

QBlittable::~QBlittable()
{
    delete d_ptr;
}


QBlittable::Capabilities QBlittable::capabilities() const
{
    Q_D(const QBlittable);
    return d->caps;
}

QSize QBlittable::size() const
{
    Q_D(const QBlittable);
    return d->m_size;
}

QImage *QBlittable::lock()
{
    Q_D(QBlittable);
    if (!d->locked) {
        d->cachedImg = doLock();
        d->locked = true;
    }

    return d->cachedImg;
}

void QBlittable::unlock()
{
    Q_D(QBlittable);
    if (d->locked) {
        doUnlock();
        d->locked = false;
    }
}

QT_END_NAMESPACE
#endif //QT_NO_BLITTABLE