ViewItem.h

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/***************************************************************************
            ViewItem.h  -  base class for a visible item within a SignalView
                             -------------------
    begin                : Sat Mar 26 2011
    copyright            : (C) 2011 by Thomas Eschenbacher
    email                : Thomas.Eschenbacher@gmx.de
 ***************************************************************************/

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

#ifndef VIEW_ITEM_H
#define VIEW_ITEM_H

#include "config.h"

#include <QtGlobal>
#include <QCursor>
#include <QFlag>
#include <QObject>
#include <QPoint>
#include <QString>

#include "libkwave/Sample.h"

class QCursor;
class QMenu;

namespace Kwave
{
    // forward declarations
    class SignalManager;
    class SignalView;

    class Q_DECL_EXPORT ViewItem: public QObject
    {
        Q_OBJECT

    public:
        enum Flag
        {
            None           = 0, 
            CanGrabAndMove = 1, 
            CanDragAndDrop = 2  
        };
        Q_DECLARE_FLAGS(Flags, Flag)

        
        ViewItem(Kwave::SignalView &view, Kwave::SignalManager &signal_manager);

        virtual ~ViewItem();

        virtual Kwave::ViewItem::Flags flags() const;

        virtual QString toolTip(sample_index_t &ofs);

        virtual void appendContextMenu(QMenu *parent);

        virtual QCursor mouseCursor() const;

        virtual void moveTo(const QPoint &mouse_pos);

        virtual void startDragging();

        virtual void done();

    signals:

        void sigCommand(const QString &command);

    protected:

        Kwave::SignalView &m_view;

        Kwave::SignalManager &m_signal_manager;

    };
}

#endif /* VIEW_ITEM_H */

//***************************************************************************
//***************************************************************************