/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Analog Clock Widget.

*

*/

#include "snsranalogclockwidget.h"

#include <QGraphicsSvgItem>

#include <QTime>

#include <QDebug>

#include <HbStyleLoader>

#include <HbIconItem>

const char *gClockCssFilePath =":/style/snsranalogclockwidget.css";

const char *gClockWidgetMLFilePath = ":/style/snsranalogclockwidget.widgetml";

/*!

    \class SnsrAnalogClockWidget

    \ingroup group_snsrbigclockscreensaverprovider

    \brief Screensaver analog clock widget.

 */

/*!

    Constructs a new SnsrAnalogClockWidget.

    \param parent Parent object.

 */

SnsrAnalogClockWidget::SnsrAnalogClockWidget(QGraphicsItem* parent):

    HbWidget(parent),

    mClockBackground(0), mClockHourHand(0), 

    mClockMinuteHand(0), mClockSecondHand(0)

{

    HbStyleLoader::registerFilePath(gClockCssFilePath);

    HbStyleLoader::registerFilePath(gClockWidgetMLFilePath);

    createPrimitives();

    updatePrimitives();

}

/*!

    Destructs the class.

 */

SnsrAnalogClockWidget::~SnsrAnalogClockWidget()

{    

    HbStyleLoader::unregisterFilePath( gClockCssFilePath );

    HbStyleLoader::unregisterFilePath( gClockWidgetMLFilePath );

}

void SnsrAnalogClockWidget::polish( HbStyleParameters& params )

{

    // TODO: updatePrimitives might not be needed to be called from here anymore (hb changes)?

    HbWidget::polish(params);

    updatePrimitives();

}

/*!

    @copydoc HbWidget::resizeEvent()

 */

void SnsrAnalogClockWidget::resizeEvent(QGraphicsSceneResizeEvent *event)

{

    HbWidget::resizeEvent(event);

    updatePrimitives();

}

/*!

    Creates all widget primitives.

 */

void SnsrAnalogClockWidget::createPrimitives()

{

    // TODO: when final graphics are available in platform (qtg_graf_screensaver_clock_xxx)

    // use them instead. Also am/pm label should be added into the clock face.

    if (!mClockBackground) {

        mClockBackground = new HbIconItem(QLatin1String("qtg_graf_clock_day_bg"), this);

        HbStyle::setItemName(mClockBackground, QLatin1String("analog_clock_background"));

    }

    if (!mClockHourHand) {

        mClockHourHand = new HbIconItem(QLatin1String("qtg_graf_clock_day_hour"), this);

        HbStyle::setItemName(mClockHourHand, QLatin1String("analog_clock_hour_hand"));

    }

    if (!mClockMinuteHand) {

        mClockMinuteHand = new HbIconItem(QLatin1String("qtg_graf_clock_day_min"), this);

        HbStyle::setItemName(mClockMinuteHand, QLatin1String("analog_clock_minute_hand"));

    }

    if (!mClockSecondHand) {

        mClockSecondHand = new HbIconItem(QLatin1String("qtg_graf_clock_day_sec"), this);

        HbStyle::setItemName(mClockSecondHand, QLatin1String("analog_clock_second_hand"));

    }

}

/*!

    @copydoc HbWidget::updatePrimitives()

 */

void SnsrAnalogClockWidget::updatePrimitives()

{

    if (!mClockHourHand || !mClockMinuteHand || !mClockSecondHand) {

        createPrimitives();

    }

    // Calculate angles for clock hands.

    QTime time = QTime::currentTime();

    qreal s = 6 * time.second();

    qreal m = 6 * (time.minute() + s/360);

    qreal h = 30 * ((time.hour() % 12) + m/360);

    int x = mClockHourHand->preferredSize().width()/2;

    int y = mClockHourHand->preferredSize().height()/2;

    mClockHourHand->setTransform(QTransform().translate(x, y).rotate(h).translate(-x, -y));

    x = mClockMinuteHand->preferredSize().width()/2;

    y = mClockMinuteHand->preferredSize().height()/2;

    mClockMinuteHand->setTransform(QTransform().translate(x, y).rotate(m).translate(-x, -y));

    x = mClockSecondHand->preferredSize().width()/2;

    y = mClockSecondHand->preferredSize().height()/2;

    mClockSecondHand->setTransform(QTransform().translate(x, y).rotate(s).translate(-x, -y));

}

/*!

    Updates primitives when time change.

 */

void SnsrAnalogClockWidget::tick()

{

    updatePrimitives();

}