i_qslider.h

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#ifndef i_qslider_h
#define i_qslider_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        A.H. Lammertink
 Date:          01/02/2001
 RCS:           $Id$
________________________________________________________________________

-*/

#include "uislider.h"

#include <QObject>
#include <QSlider>


QT_BEGIN_NAMESPACE

class QString;

class i_SliderMessenger : public QObject
{
    Q_OBJECT
    friend class        uiSliderBody;

protected:

i_SliderMessenger( QSlider* sndr, uiSlider* receiver )
    : sender_(sndr)
    , receiver_(receiver)
{
    connect( sndr, SIGNAL(sliderMoved(int)), this, SLOT(sliderMoved(int)) );
    connect( sndr, SIGNAL(sliderPressed()), this, SLOT(sliderPressed()) );
    connect( sndr, SIGNAL(sliderReleased()), this, SLOT(sliderReleased()) );
    connect( sndr, SIGNAL(valueChanged(int)), this, SLOT(valueChanged(int)) );
}


private:

    uiSlider*   receiver_;
    QSlider*    sender_;

#define mTrigger( notifier ) \
    const int refnr = receiver_->slider()->beginCmdRecEvent( #notifier ); \
    receiver_->notifier.trigger(*receiver_); \
    receiver_->slider()->endCmdRecEvent( refnr, #notifier );

private slots:

void sliderMoved(int)   { mTrigger(sliderMoved); }
void sliderPressed()    { mTrigger(sliderPressed); }
void sliderReleased()   { mTrigger(sliderReleased); }
void valueChanged(int)  { mTrigger(valueChanged); }

#undef mTrigger

};

QT_END_NAMESPACE

#endif