F:/KPlato/koffice/libs/flake/KoInteractionTool.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 KOINTERACTIONTOOL_H
#define KOINTERACTIONTOOL_H

#include "KoTool.h"
#include "KoSelection.h"

#include <koffice_export.h>

//#include <kstaticdeleter.h>

#include <QImage>
#include <QTime>

class KoInteractionStrategy;
class KoShapeMoveCommand;

#define KoInteractionTool_ID "InteractionTool"

class FLAKE_EXPORT KoInteractionTool : public KoTool
{
public:
    KoInteractionTool( KoCanvasBase *canvas );
    virtual ~KoInteractionTool();

public:

    virtual bool wantsAutoScroll();
    virtual void paint( QPainter &painter, KoViewConverter &converter );

    void repaintDecorations();
    KoFlake::SelectionHandle handleAt(const QPointF &point, bool *innerHandleMeaning = 0);

public slots:
    void activate(bool temporary = false);

public: // Events

    virtual void mousePressEvent( KoPointerEvent *event );
    virtual void mouseMoveEvent( KoPointerEvent *event );
    virtual void mouseReleaseEvent( KoPointerEvent *event );

    virtual void keyPressEvent(QKeyEvent *event);
    virtual void keyReleaseEvent(QKeyEvent *event);

signals:

    void sigActivateTool( const QString &id );
    void sigActivateTemporary(const QString &id);
    void sigDone();


protected:
    KoInteractionStrategy *m_currentStrategy; 

private:
    void recalcSelectionBox();
    void updateCursor();

    KoInteractionTool(const KoInteractionTool&);
    KoInteractionTool& operator=(const KoInteractionTool&);

    QRectF handlesSize();

    // convenience method;
    KoSelection * selection();
    KoFlake::SelectionHandle m_lastHandle;
    bool m_mouseWasInsideHandles;
    QPointF m_selectionBox[8];
    QPolygonF m_selectionOutline;
    QPointF m_lastPoint;
    KoShapeMoveCommand *m_moveCommand;
    QTime m_lastUsedMoveCommand;

    // TODO alter these 3 arrays to be static const instead
    QCursor m_sizeCursors[8];
    QCursor m_rotateCursors[8];
    QCursor m_shearCursors[8];
    double m_angle;
};

class SelectionDecorator {
public:
    SelectionDecorator(KoFlake::SelectionHandle arrows, bool rotationHandles, bool shearHandles);
    ~SelectionDecorator() {}

    void paint(QPainter &painter, KoViewConverter &converter);

    void setSelection(KoSelection *selection);

private:
    bool m_rotationHandles, m_shearHandles;
    KoFlake::SelectionHandle m_arrows;
    KoSelection *m_selection;

    static QImage *s_rotateCursor;
};

#endif /* KOINTERACTIONTOOL_H */

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