/*  This file is part of the KDE project.

Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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 or 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 "abstractvideorenderer.h"

#include <QtGui/QApplication>

#include <QtGui/QDesktopWidget>

QT_BEGIN_NAMESPACE

#ifndef QT_NO_PHONON_VIDEO

namespace Phonon

{

    namespace DS9

    {

        AbstractVideoRenderer::AbstractVideoRenderer() : 

            m_dstX(0), m_dstY(0), m_dstWidth(0), m_dstHeight(0),

                m_active(false)

        {

        }

        AbstractVideoRenderer::~AbstractVideoRenderer()

        {

        }

        Filter AbstractVideoRenderer::getFilter() const

        {

            return m_filter;

        }

        QSize AbstractVideoRenderer::sizeHint() const

        {

            QSize s = videoSize();

            if (s.isNull()) {

                s = QSize(640, 480).boundedTo( QApplication::desktop()->availableGeometry().size() );

            }

            return s;

        }

        void AbstractVideoRenderer::setActive(bool b)

        {

            m_active = b;

        }

        bool AbstractVideoRenderer::isActive() const

        {

            return m_active;

        }

        void AbstractVideoRenderer::internalNotifyResize(const QSize &size, const QSize &videoSize,

            Phonon::VideoWidget::AspectRatio aspectRatio, Phonon::VideoWidget::ScaleMode scaleMode)

        {

            //update the video rects

            qreal ratio = -1.;

            const int videoWidth = videoSize.width(),

                videoHeight = videoSize.height();

            switch(aspectRatio)

            {

            case Phonon::VideoWidget::AspectRatioAuto:

                {

                    //preserve the aspect ratio of the video

                    ratio = qreal(videoWidth) / qreal(videoHeight);

                }

                break;

            case Phonon::VideoWidget::AspectRatio4_3:

                ratio = qreal(4. / 3.);

                break;

            case Phonon::VideoWidget::AspectRatio16_9:

                ratio = qreal(16. / 9.);

                break;

            case Phonon::VideoWidget::AspectRatioWidget:

            default:

                break;

            }

            const qreal realWidth = size.width(), 

                realHeight = size.height();

            //reinitialization

            m_dstWidth = size.width();

            m_dstHeight = size.height();

            m_dstX = m_dstY = 0;

            if (ratio > 0) {

                if ((realWidth / realHeight > ratio && scaleMode == Phonon::VideoWidget::FitInView)

                    || (realWidth / realHeight < ratio && scaleMode == Phonon::VideoWidget::ScaleAndCrop)) {

                        //the height is correct, let's change the width

                        m_dstWidth = qRound(realHeight * ratio);

                        m_dstX = qRound((realWidth - realHeight * ratio) / 2.);

                } else {

                    m_dstHeight = qRound(realWidth / ratio);

                    m_dstY = qRound((realHeight - realWidth / ratio) / 2.);

                }

            }

        }

    }

}

#endif //QT_NO_PHONON_EFFECT

QT_END_NAMESPACE