/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Copyright (C) 2016 Ivailo Monev
**
** This file is part of the QtGui module of the Katie Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
**
** GNU Lesser General Public License Usage
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QICONENGINE_H
#define QICONENGINE_H

#include <QtCore/qlist.h>
#include <QtGui/qicon.h>


QT_BEGIN_NAMESPACE

class Q_GUI_EXPORT QIconEngine
{
public:
    virtual ~QIconEngine();
    virtual void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) = 0;
    virtual QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state);
    virtual QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);

    virtual void addPixmap(const QPixmap &pixmap, QIcon::Mode mode, QIcon::State state);
    virtual void addFile(const QString &fileName, const QSize &size, QIcon::Mode mode, QIcon::State state);

    virtual QString key() const;
    virtual QIconEngine *clone() const = 0;
    virtual bool read(QDataStream &in);
    virtual bool write(QDataStream &out) const;

    virtual QList<QSize> availableSizes(QIcon::Mode mode = QIcon::Normal,
                                QIcon::State state = QIcon::Off) const;
    virtual QString iconName() const;
};

QT_END_NAMESPACE


#endif // QICONENGINE_H
