/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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
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** use the contact form at http://qt.digia.com/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
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** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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**
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****************************************************************************/

#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;
    }
}

bool QBlittable::isLocked() const
{
    Q_D(const QBlittable);
    return d->locked;
}

QT_END_NAMESPACE
#endif //QT_NO_BLITTABLE