/*  This file is part of the KDE project
    Copyright (C) 2006-2007 Matthias Kretz <kretz@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) version 3, or any
    later version accepted by the membership of KDE e.V. (or its
    successor approved by the membership of KDE e.V.), Nokia Corporation 
    (or its successors, if any) and the KDE Free Qt Foundation, which shall
    act as a proxy defined in Section 6 of version 3 of the license.

    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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public 
    License along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "seekslider.h"
#include "seekslider_p.h"
#include "mediaobject.h"
#include "phonondefs_p.h"

#include <QtGui/QMouseEvent>
#include <QtGui/QApplication>

QT_BEGIN_NAMESPACE

#ifndef QT_NO_PHONON_SEEKSLIDER

namespace Phonon
{

SeekSlider::SeekSlider(QWidget *parent)
    : QWidget(parent)
    , k_ptr(new SeekSliderPrivate(this))
{
    K_D(SeekSlider);
    connect(&d->slider, SIGNAL(valueChanged(int)), SLOT(_k_seek(int)));
}

SeekSlider::SeekSlider(MediaObject *mo, QWidget *parent)
    : QWidget(parent)
    , k_ptr(new SeekSliderPrivate(this))
{
    K_D(SeekSlider);
    connect(&d->slider, SIGNAL(valueChanged(int)), SLOT(_k_seek(int)));
    setMediaObject(mo);
}

/*SeekSlider::SeekSlider(SeekSliderPrivate &_d, QWidget *parent)
    : QWidget(parent)
    , k_ptr(&_d)
{
} */

SeekSlider::~SeekSlider()
{
    delete k_ptr;
}

void SeekSlider::setMediaObject(MediaObject *media)
{
    K_D(SeekSlider);
    if (d->media) {
        disconnect(d->media, 0, this, 0);
    }
    d->media = media;

    if (media) {
        connect(media, SIGNAL(stateChanged(Phonon::State,Phonon::State)),
                SLOT(_k_stateChanged(Phonon::State)));
        connect(media, SIGNAL(totalTimeChanged(qint64)), SLOT(_k_length(qint64)));
        connect(media, SIGNAL(tick(qint64)), SLOT(_k_tick(qint64)));
        connect(media, SIGNAL(seekableChanged(bool)), SLOT(_k_seekableChanged(bool)));
        connect(media, SIGNAL(currentSourceChanged(Phonon::MediaSource)), SLOT(_k_currentSourceChanged()));
        d->_k_stateChanged(media->state());
        d->_k_seekableChanged(media->isSeekable());
        d->_k_length(media->totalTime());
    } else {
        d->_k_stateChanged(Phonon::StoppedState);
        d->_k_seekableChanged(false);
    }
}

MediaObject *SeekSlider::mediaObject() const
{
    K_D(const SeekSlider);
    return d->media;
}

void SeekSliderPrivate::_k_seek(int msec)
{
    if (!ticking && media) {
        media->seek(msec);
    }
}

void SeekSliderPrivate::_k_tick(qint64 msec)
{
    ticking = true;
    slider.setValue(msec);
    ticking = false;
}

void SeekSliderPrivate::_k_length(qint64 msec)
{
    ticking = true;
    slider.setRange(0, msec);
    ticking = false;
}

void SeekSliderPrivate::_k_seekableChanged(bool isSeekable)
{
    if (!isSeekable || !media) {
        setEnabled(false);
    } else {
        switch (media->state()) {
        case Phonon::PlayingState:
            if (media->tickInterval() == 0) {
                // if the tick signal is not enabled the slider is useless
                // set the tickInterval to some common value
                media->setTickInterval(350);
            }
        case Phonon::BufferingState:
        case Phonon::PausedState:
            setEnabled(true);
            break;
        case Phonon::StoppedState:
        case Phonon::LoadingState:
        case Phonon::ErrorState:
            setEnabled(false);
            ticking = true;
            slider.setValue(0);
            ticking = false;
            break;
        }
    }
}

void SeekSliderPrivate::_k_currentSourceChanged()
{
    //this releases the mouse and makes the seek slider stop seeking if the current source has changed
    QMouseEvent event(QEvent::MouseButtonRelease, QPoint(), Qt::LeftButton, 0, 0);
    QApplication::sendEvent(&slider, &event);
}

void SeekSliderPrivate::setEnabled(bool x)
{
    slider.setEnabled(x);
    iconLabel.setPixmap(icon.pixmap(iconSize, x ? QIcon::Normal : QIcon::Disabled));
}

void SeekSliderPrivate::_k_stateChanged(State newstate)
{
    if (!media || !media->isSeekable()) {
        setEnabled(false);
        return;
    }
    switch (newstate) {
    case Phonon::PlayingState:
        if (media->tickInterval() == 0) {
            // if the tick signal is not enabled the slider is useless
            // set the tickInterval to some common value
            media->setTickInterval(350);
        }
    case Phonon::BufferingState:
    case Phonon::PausedState:
        setEnabled(true);
        break;
    case Phonon::StoppedState:
    case Phonon::LoadingState:
    case Phonon::ErrorState:
        setEnabled(false);
        ticking = true;
        slider.setValue(0);
        ticking = false;
        break;
    }
}

bool SeekSlider::hasTracking() const
{
    return k_ptr->slider.hasTracking();
}

void SeekSlider::setTracking(bool tracking)
{
    k_ptr->slider.setTracking(tracking);
}

int SeekSlider::pageStep() const
{
    return k_ptr->slider.pageStep();
}

void SeekSlider::setPageStep(int milliseconds)
{
    k_ptr->slider.setPageStep(milliseconds);
}

int SeekSlider::singleStep() const
{
    return k_ptr->slider.singleStep();
}

void SeekSlider::setSingleStep(int milliseconds)
{
    k_ptr->slider.setSingleStep(milliseconds);
}

bool SeekSlider::isIconVisible() const
{
    K_D(const SeekSlider);
    return d->iconLabel.isVisible();
}

void SeekSlider::setIconVisible(bool vis)
{
    K_D(SeekSlider);
    d->iconLabel.setVisible(vis);
}

Qt::Orientation SeekSlider::orientation() const
{
    return k_ptr->slider.orientation();
}

void SeekSlider::setOrientation(Qt::Orientation o)
{
    K_D(SeekSlider);
    Qt::Alignment align = (o == Qt::Horizontal ? Qt::AlignVCenter : Qt::AlignHCenter);
    d->layout.setAlignment(&d->iconLabel, align);
    d->layout.setAlignment(&d->slider, align);
    d->layout.setDirection(o == Qt::Horizontal ? QBoxLayout::LeftToRight : QBoxLayout::TopToBottom);
    d->slider.setOrientation(o);
}

QSize SeekSlider::iconSize() const
{
    return k_ptr->iconSize;
}

void SeekSlider::setIconSize(const QSize &iconSize)
{
    K_D(SeekSlider);
    d->iconSize = iconSize;
    d->iconLabel.setPixmap(d->icon.pixmap(d->iconSize, d->slider.isEnabled() ? QIcon::Normal : QIcon::Disabled));
}

} // namespace Phonon

#endif //QT_NO_PHONON_SEEKSLIDER

QT_END_NAMESPACE

#include "moc_seekslider.cpp"

// vim: sw=4 ts=4