/*  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 "ancestormovemonitor.h"

#include "utils.h"

#include "videooutput.h"

#ifndef QT_NO_DEBUG

#include "objectdump.h"

#endif

#include <QPaintEvent>

#include <QPainter>

#include <QMoveEvent>

#include <QResizeEvent>

#include <QtCore/private/qcore_symbian_p.h> // for qt_TRect2QRect

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

#include <coecntrl.h>

#include <coemain.h>    // for CCoeEnv

QT_BEGIN_NAMESPACE

using namespace Phonon;

using namespace Phonon::MMF;

/*! \class MMF::VideoOutput

  \internal

*/

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

// Constants

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

static const Phonon::VideoWidget::AspectRatio DefaultAspectRatio =

    Phonon::VideoWidget::AspectRatioAuto;

static const Phonon::VideoWidget::ScaleMode DefaultScaleMode =

    Phonon::VideoWidget::FitInView;

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

// Constructor / destructor

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

MMF::VideoOutput::VideoOutput

    (AncestorMoveMonitor* ancestorMoveMonitor, QWidget* parent)

        :   QWidget(parent)

        ,   m_ancestorMoveMonitor(ancestorMoveMonitor)

        ,   m_aspectRatio(DefaultAspectRatio)

        ,   m_scaleMode(DefaultScaleMode)

{

    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);

    qt_widget_private(this)->extraData()->nativePaintMode = QWExtra::ZeroFill;

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

    getVideoWindowRect();

    registerForAncestorMoved();

    dump();

    TRACE_EXIT_0();

}

MMF::VideoOutput::~VideoOutput()

{

    TRACE_CONTEXT(VideoOutput::~VideoOutput, EVideoInternal);

    TRACE_ENTRY_0();

    m_ancestorMoveMonitor->unRegisterTarget(this);

    TRACE_EXIT_0();

}

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

{

    TRACE_CONTEXT(VideoOutput::setVideoSize, EVideoInternal);

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

          m_videoFrameSize.width(), m_videoFrameSize.height(),

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

    if (frameSize != m_videoFrameSize) {

        m_videoFrameSize = frameSize;

        updateGeometry();

    }

}

void MMF::VideoOutput::ancestorMoved()

{

    TRACE_CONTEXT(VideoOutput::ancestorMoved, EVideoInternal);

    TRACE_ENTRY_0();

    RWindowBase *const window = videoWindow();

    if(window) {

        const TPoint newWindowPosSymbian = window->AbsPosition();

        const QPoint newWindowPos(newWindowPosSymbian.iX, newWindowPosSymbian.iY);

        if(newWindowPos != m_videoWindowRect.topLeft()) {

            m_videoWindowRect.moveTo(newWindowPos);

            emit videoWindowChanged();

        }

    }

    TRACE_EXIT_0();

}

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

// QWidget

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

QSize MMF::VideoOutput::sizeHint() const

{

    // TODO: replace this with a more sensible default

    QSize result(320, 240);

    if (!m_videoFrameSize.isNull())

        result = m_videoFrameSize;

    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().rectCount());

    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());

    if(event->size() != event->oldSize()) {

        m_videoWindowRect.setSize(event->size());

        emit videoWindowChanged();

    }

}

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());

    if(event->pos() != event->oldPos()) {

        m_videoWindowRect.moveTo(event->pos());

        emit videoWindowChanged();

    }

}

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

{

    TRACE_CONTEXT(VideoOutput::event, EVideoInternal);

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

        TRACE_0("WinIdChange");

        getVideoWindowRect();

        emit videoWindowChanged();

        return true;

    } else if (event->type() == QEvent::ParentChange) {

        // Tell ancestor move monitor to update ancestor list for this widget

        registerForAncestorMoved();

        return true;

    } else

        return QWidget::event(event);

}

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

// Public functions

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

RWindowBase* MMF::VideoOutput::videoWindow()

{

    CCoeControl *control = internalWinId();

    if(!control)

        control = effectiveWinId();

    RWindowBase *window = 0;

    if(control)

        window = control->DrawableWindow();

    return window;

}

const QRect& MMF::VideoOutput::videoWindowRect() const

{

    return m_videoWindowRect;

}

Phonon::VideoWidget::AspectRatio MMF::VideoOutput::aspectRatio() const

{

    return m_aspectRatio;

}

void MMF::VideoOutput::setAspectRatio

    (Phonon::VideoWidget::AspectRatio aspectRatio)

{

    if(m_aspectRatio != aspectRatio) {

        m_aspectRatio = aspectRatio;

        emit aspectRatioChanged();

    }

}

Phonon::VideoWidget::ScaleMode MMF::VideoOutput::scaleMode() const

{

    return m_scaleMode;

}

void MMF::VideoOutput::setScaleMode

    (Phonon::VideoWidget::ScaleMode scaleMode)

{

    if(m_scaleMode != scaleMode) {

        m_scaleMode = scaleMode;

        emit scaleModeChanged();

    }

}

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

// Private functions

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

void MMF::VideoOutput::getVideoWindowRect()

{

    RWindowBase *const window = videoWindow();

    if(window)

        m_videoWindowRect =

            qt_TRect2QRect(TRect(window->AbsPosition(), window->Size()));

}

void MMF::VideoOutput::registerForAncestorMoved()

{

    m_ancestorMoveMonitor->registerTarget(this);

}

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::dumpTreeFromLeaf(*this, *visitor);

    QScopedPointer<ObjectDump::QDumper> dumper(new ObjectDump::QDumper);

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

    ObjectDump::addDefaultAnnotators(*dumper);

    TRACE_0("Dumping VideoOutput:");

    dumper->dumpObject(*this);

#endif

}

void MMF::VideoOutput::beginNativePaintEvent(const QRect& /*controlRect*/)

{

    emit beginVideoWindowNativePaint();

}

void MMF::VideoOutput::endNativePaintEvent(const QRect& /*controlRect*/)

{

    // Ensure that draw ops are executed into the WSERV output framebuffer

    CCoeEnv::Static()->WsSession().Flush();

    emit endVideoWindowNativePaint();

}

QT_END_NAMESPACE