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 /* This file is part of the KDE project
  * SPDX-FileCopyrightText: 2010 Matus Talcik <matus.talcik@gmail.com>
  *
  * SPDX-License-Identifier: LGPL-2.0-or-later
  */
 /****************************************************************************
 **
 ** Copyright (C) 2010 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.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
 #ifndef KIS_UNDO_MODEL_H
 #define KIS_UNDO_MODEL_H
 #include <QAbstractItemModel>
 
 #include <kundo2qstack.h>
 #include <QItemSelectionModel>
 #include <QIcon>
 #include <QPointer>
 
 #include <kundo2command.h>
 
 #include "kis_types.h"
 #include "kis_canvas2.h"
 #include "KisViewManager.h"
 #include "kis_image.h"
 #include "kis_paint_device.h"
 
 class KisUndoModel : public QAbstractItemModel
 {
     Q_OBJECT
 public:
     KisUndoModel(QObject *parent = 0);
 
     KUndo2QStack *stack() const;
 
     QModelIndex index(int row, int column,
     const QModelIndex &parent = QModelIndex()) const override;
     QModelIndex parent(const QModelIndex &child) const override;
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
     int columnCount(const QModelIndex &parent = QModelIndex()) const override;
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
 
     QModelIndex selectedIndex() const;
     QItemSelectionModel *selectionModel() const;
 
     QString emptyLabel() const;
     void setEmptyLabel(const QString &label);
 
     void setCleanIcon(const QIcon &icon);
     QIcon cleanIcon() const;
 
     void setCanvas(KisCanvas2* canvas);
     bool checkMergedCommand(int index);
 
     // It's a bit weird to have "setDevicePixelRatio"
     //  in a model class, but it's needed for
     //  QImages inside, because there is no
     //  ItemDelegate for the items,
     //  so it's better to initialize QImages already
     //  devicePixelRatio-corrected.
     void setDevicePixelRatio(qreal devicePixelRatio);
 
 public Q_SLOTS:
     void setStack(KUndo2QStack *stack);
     void addImage(int idx);
 
 private Q_SLOTS:
     void stackChanged();
     void stackDestroyed(QObject *obj);
     void setStackCurrentIndex(const QModelIndex &index);
 
 private:
     bool m_blockOutgoingHistoryChange {false};
     KUndo2QStack *m_stack {0};
     QItemSelectionModel *m_sel_model {0};
     QString m_empty_label;
     QIcon m_clean_icon;
     QPointer<KisCanvas2> m_canvas;
     QMap<const KUndo2Command*, QImage> m_imageMap;
     qreal m_devicePixelRatioF {1.0};
 };
 #endif