/*  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 "utils.h"

#include "videooutput.h"

#include "videooutputobserver.h"

#ifndef QT_NO_DEBUG

#include "objectdump.h"

#endif

#include <QPaintEvent>

#include <QPainter>

#include <QMoveEvent>

#include <QResizeEvent>

#include <QtGui/private/qwidget_p.h> // to access QWExtra

QT_BEGIN_NAMESPACE

using namespace Phonon;

using namespace Phonon::MMF;

/*! \class MMF::VideoOutput

  \internal

*/

//-----------------------------------------------------------------------------

// Constructor / destructor

//-----------------------------------------------------------------------------

MMF::VideoOutput::VideoOutput(QWidget* parent)

        :   QWidget(parent)

        ,   m_observer(0)

{

    TRACE_CONTEXT(VideoOutput::VideoOutput, EVideoInternal);

    TRACE_ENTRY("parent 0x%08x", parent);

    setPalette(QPalette(Qt::black));

    setAttribute(Qt::WA_OpaquePaintEvent, true);

    setAttribute(Qt::WA_NoSystemBackground, true);

    setAutoFillBackground(false);

    // Causes QSymbianControl::Draw not to BitBlt this widget's region of the

    // backing store.  Since the backing store is (by default) a 16MU bitmap,

    // blitting it results in this widget's screen region in the final

    // framebuffer having opaque alpha values.  This in turn causes the video

    // to be invisible when running on the target device.

    qt_widget_private(this)->extraData()->disableBlit = true;

    dump();

    TRACE_EXIT_0();

}

MMF::VideoOutput::~VideoOutput()

{

    TRACE_CONTEXT(VideoOutput::~VideoOutput, EVideoInternal);

    TRACE_ENTRY_0();

    TRACE_EXIT_0();

}

void MMF::VideoOutput::setFrameSize(const QSize& frameSize)

{

    TRACE_CONTEXT(VideoOutput::setFrameSize, EVideoInternal);

    TRACE("oldSize %d %d newSize %d %d",

          m_frameSize.width(), m_frameSize.height(),

          frameSize.width(), frameSize.height());

    if (frameSize != m_frameSize) {

        m_frameSize = frameSize;

        updateGeometry();

    }

}

void MMF::VideoOutput::setObserver(VideoOutputObserver* observer)

{

    TRACE_CONTEXT(VideoOutput::setObserver, EVideoInternal);

    TRACE("observer 0x%08x", observer);

    m_observer = observer;

}

//-----------------------------------------------------------------------------

// QWidget

//-----------------------------------------------------------------------------

QSize MMF::VideoOutput::sizeHint() const

{

    // TODO: replace this with a more sensible default

    QSize result(320, 240);

    if (!m_frameSize.isNull()) {

        result = m_frameSize;

    }

    return result;

}

void MMF::VideoOutput::paintEvent(QPaintEvent* event)

{

    TRACE_CONTEXT(VideoOutput::paintEvent, EVideoInternal);

    TRACE("rect %d %d - %d %d",

          event->rect().left(), event->rect().top(),

          event->rect().right(), event->rect().bottom());

    TRACE("regions %d", event->region().numRects());

    TRACE("type %d", event->type());

    // Do nothing

}

void MMF::VideoOutput::resizeEvent(QResizeEvent* event)

{

    TRACE_CONTEXT(VideoOutput::resizeEvent, EVideoInternal);

    TRACE("%d %d -> %d %d",

          event->oldSize().width(), event->oldSize().height(),

          event->size().width(), event->size().height());

    videoOutputRegionChanged();

}

void MMF::VideoOutput::moveEvent(QMoveEvent* event)

{

    TRACE_CONTEXT(VideoOutput::moveEvent, EVideoInternal);

    TRACE("%d %d -> %d %d",

          event->oldPos().x(), event->oldPos().y(),

          event->pos().x(), event->pos().y());

    videoOutputRegionChanged();

}

bool MMF::VideoOutput::event(QEvent* event)

{

    TRACE_CONTEXT(VideoOutput::event, EVideoInternal);

    if (event->type() == QEvent::WinIdChange) {

        TRACE_0("WinIdChange");

        videoOutputRegionChanged();

        return true;

    }

    else

        return QWidget::event(event);

}

//-----------------------------------------------------------------------------

// Private functions

//-----------------------------------------------------------------------------

void MMF::VideoOutput::videoOutputRegionChanged()

{

    dump();

    if (m_observer)

        m_observer->videoOutputRegionChanged();

}

void MMF::VideoOutput::dump() const

{

#ifndef QT_NO_DEBUG

    TRACE_CONTEXT(VideoOutput::dump, EVideoInternal);

    QScopedPointer<ObjectDump::QVisitor> visitor(new ObjectDump::QVisitor);

    visitor->setPrefix("Phonon::MMF"); // to aid searchability of logs

    ObjectDump::addDefaultAnnotators(*visitor);

    TRACE("Dumping tree from leaf 0x%08x:", this);

    //ObjectDump::dumpAncestors(*this, *visitor);

    ObjectDump::dumpTreeFromLeaf(*this, *visitor);

#endif

}

QT_END_NAMESPACE