F:/KPlato/koffice/libs/flake/KoInteractionStrategy.h

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/* This file is part of the KDE project

   Copyright (C) 2006 Thorsten Zachmann <zachmann@kde.org>
   Copyright (C) 2006 Thomas Zander <zander@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#ifndef KODEF_H
#define KODEF_H

#include <Qt>

#include <KoSelection.h>

class QPainter;
class KoPointerEvent;
class KCommand;
class KoCanvasBase;
class KoInteractionTool;
class KoTool;

class KoInteractionStrategy
{
public:
    virtual ~KoInteractionStrategy() {}

    virtual void paint( QPainter &painter, KoViewConverter &converter) {
        Q_UNUSED(painter); Q_UNUSED(converter); };
    virtual void handleMouseMove(const QPointF &mouseLocation, Qt::KeyboardModifiers modifiers) = 0;
    virtual KCommand* createCommand() = 0;
    void cancelInteraction();
    virtual void finishInteraction( Qt::KeyboardModifiers modifiers ) = 0;

    static KoInteractionStrategy* createStrategy(KoPointerEvent *event, KoInteractionTool *parentTool, KoCanvasBase *canvas);

protected:
    KoInteractionStrategy(KoTool *parent, KoCanvasBase *canvas);

    void applyGrid(QPointF &point);

protected: // members
    KoTool *m_parent; 
    KoSelectionSet m_selectedShapes; 
    KoCanvasBase *m_canvas; 
};

#endif /* KODEF_H */

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