/*

* Copyright (c) 2009-2010 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 <HbExtendedLocale>

#include <HbStyleLoader>

#include <HbIconItem>

#include <hbevent.h>

#include <HbColorScheme>

#include <HbTextItem>

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

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

const QString amPmLabelTextColorRole("qtc_screensaver_analog_clock");

/*!

    \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),

    mClockAmPmLabel(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.

    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"));

    }

    if (!mClockAmPmLabel) {

        mClockAmPmLabel = new HbTextItem(this);

        HbStyle::setItemName(mClockAmPmLabel, QLatin1String("analog_clock_am_pm_label"));

        mClockAmPmLabel->setTextColor(HbColorScheme::color(amPmLabelTextColorRole));

        mClockAmPmLabel->setMinimumLines(1);

        mClockAmPmLabel->setMaximumLines(1);

        mClockAmPmLabel->setTextWrapping(Hb::TextNoWrap);

        HbFontSpec textFont(HbFontSpec::Primary);

        qreal textHeight = 0;

        style()->parameter(QLatin1String("hb-param-text-height-tiny"), textHeight);

        textFont.setTextHeight(textHeight);

        mClockAmPmLabel->setFontSpec(textFont);

    }

}

/*!

    @copydoc HbWidget::updatePrimitives()

 */

void SnsrAnalogClockWidget::updatePrimitives()

{

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

        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));

    QString amPmString = (time.hour()<12) ? HbExtendedLocale().amText() : HbExtendedLocale().pmText();

    mClockAmPmLabel->setText( amPmString );

}

/*!

    Updates primitives when time change.

 */

void SnsrAnalogClockWidget::tick()

{

    updatePrimitives();

}

/*!

    \reimp

 */

void SnsrAnalogClockWidget::changeEvent(QEvent * event)

{

    if (event->type() == HbEvent::ThemeChanged) {

        mClockAmPmLabel->setTextColor(HbColorScheme::color(amPmLabelTextColorRole));

    }

    return HbWidget::changeEvent(event);

}