source: smplayer/trunk/src/timeslider.cpp@ 165

/*  smplayer, GUI front-end for mplayer.
    Copyright (C) 2006-2014 Ricardo Villalba <rvm@users.sourceforge.net>

    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.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "timeslider.h"

#include <QWheelEvent>
#include <QTimer>

#define DEBUG 0

TimeSlider::TimeSlider( QWidget * parent ) : MySlider(parent)
{
        dont_update = false;
        setMinimum(0);
#ifdef SEEKBAR_RESOLUTION
        setMaximum(SEEKBAR_RESOLUTION);
#else
        setMaximum(100);
#endif

        setFocusPolicy( Qt::NoFocus );
        setSizePolicy( QSizePolicy::Expanding , QSizePolicy::Fixed );

        connect( this, SIGNAL( sliderPressed() ), this, SLOT( stopUpdate() ) );
        connect( this, SIGNAL( sliderReleased() ), this, SLOT( resumeUpdate() ) );
        connect( this, SIGNAL( sliderReleased() ), this, SLOT( mouseReleased() ) );
        connect( this, SIGNAL( valueChanged(int) ), this, SLOT( valueChanged_slot(int) ) );
#if ENABLE_DELAYED_DRAGGING
        connect( this, SIGNAL(draggingPos(int) ), this, SLOT(checkDragging(int)) );
        
        last_pos_to_send = -1;
        timer = new QTimer(this);
        connect( timer, SIGNAL(timeout()), this, SLOT(sendDelayedPos()) );
        timer->start(200);
#endif
}

TimeSlider::~TimeSlider() {
}

void TimeSlider::stopUpdate() {
        #if DEBUG
        qDebug("TimeSlider::stopUpdate");
        #endif
        dont_update = true;
}

void TimeSlider::resumeUpdate() {
        #if DEBUG
        qDebug("TimeSlider::resumeUpdate");
        #endif
        dont_update = false;
}

void TimeSlider::mouseReleased() {
        #if DEBUG
        qDebug("TimeSlider::mouseReleased");
        #endif
        emit posChanged( value() );
}

void TimeSlider::valueChanged_slot(int v) {
        #if DEBUG
        qDebug("TimeSlider::changedValue_slot: %d", v);
        #endif

        // Only to make things clear:
        bool dragging = dont_update;
        if (!dragging) {
                if (v!=position) {
                        #if DEBUG
                        qDebug(" emitting posChanged");
                        #endif
                        emit posChanged(v);
                }
        } else {
                #if DEBUG
                qDebug(" emitting draggingPos");
                #endif
                emit draggingPos(v);
        }
}

#if ENABLE_DELAYED_DRAGGING
void TimeSlider::setDragDelay(int d) {
        qDebug("TimeSlider::setDragDelay: %d", d);
        timer->setInterval(d);
}

int TimeSlider::dragDelay() {
        return timer->interval();
}

void TimeSlider::checkDragging(int v) {
        qDebug("TimeSlider::checkDragging: %d", v);
        last_pos_to_send = v;
}

void TimeSlider::sendDelayedPos() {
        if (last_pos_to_send != -1) {
                qDebug("TimeSlider::sendDelayedPos: %d", last_pos_to_send);
                emit delayedDraggingPos(last_pos_to_send);
                last_pos_to_send = -1;
        }
}
#endif

void TimeSlider::setPos(int v) {
        #if DEBUG
        qDebug("TimeSlider::setPos: %d", v);
        qDebug(" dont_update: %d", dont_update);
        #endif

        if (v!=pos()) {
                if (!dont_update) {
                        position = v;
                        setValue(v);
                }
        }
}

int TimeSlider::pos() {
        return position;
}

/*
void TimeSlider::wheelEvent( QWheelEvent * e ) {
        e->ignore();
}
*/

#include "moc_timeslider.cpp"