/*

* Copyright (c) 2008 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 <QGraphicsSceneMouseEvent>

#include <QTime>

#include <HbStyleLoader>

#include <HbIconItem>

#include <HbTouchArea>

#include "hsanalogclockwidget.h"

/*!

    \class HsAnalogClockWidget

    \ingroup group_hsclockwidgetplugin

    \brief Homescreen themable analog clock widget.

*/

/*!

    Constructs widget.

*/

HsAnalogClockWidget::HsAnalogClockWidget(QGraphicsItem *parent)

    : HbWidget(parent),

      mBackground(0), mHourHand(0), mMinuteHand(0), 

      mSecondHand(0), mTouchArea(0)

{

    HbStyleLoader::registerFilePath(":/hsanalogclockwidget.widgetml");

    HbStyleLoader::registerFilePath(":/hsanalogclockwidget.css");

    createPrimitives();

}

/*!

    Destructor.

*/

HsAnalogClockWidget::~HsAnalogClockWidget()

{

    HbStyleLoader::unregisterFilePath(":/hsanalogclockwidget.widgetml");

    HbStyleLoader::unregisterFilePath(":/hsanalogclockwidget.css");

    mTouchArea->removeEventFilter(this);

}

/*!

    Filters touch area events.

*/

bool HsAnalogClockWidget::eventFilter(QObject *watched, QEvent *event)

{

    Q_UNUSED(watched)

    switch (event->type()) {

        case QEvent::GraphicsSceneMousePress:

            return true;

        case QEvent::GraphicsSceneMouseRelease:

            handleMouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent *>(event));

            return true;

        default:

            break;

    }

    return false;

}

/*!

    Updates clock visualization according to current time

 */

void HsAnalogClockWidget::tick()

{

    updatePrimitives();

}

/*!

    @copydoc HbWidget::resizeEvent()

 */

void HsAnalogClockWidget::resizeEvent(QGraphicsSceneResizeEvent *event)

{

    HbWidget::resizeEvent(event);

    updatePrimitives();   

}

/*!

    Creates all widget primitives.

 */

void HsAnalogClockWidget::createPrimitives()

{

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

    HbStyle::setItemName(mBackground, QLatin1String("background"));

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

    HbStyle::setItemName(mHourHand, QLatin1String("hour_hand"));

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

    HbStyle::setItemName(mMinuteHand, QLatin1String("minute_hand"));

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

    HbStyle::setItemName(mSecondHand, QLatin1String("second_hand"));

    mTouchArea = new HbTouchArea(this);

    mTouchArea->installEventFilter(this);    

    HbStyle::setItemName(mTouchArea, QLatin1String("toucharea"));

}

/*!

    @copydoc HbWidget::updatePrimitives()

 */

void HsAnalogClockWidget::updatePrimitives()

{

    // 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 = mBackground->iconItemSize().width()/2;

    int y = mBackground->iconItemSize().height()/2;

    QPointF originPoint = QPointF(x, y);

    mHourHand->setTransformOriginPoint(originPoint);

    mHourHand->setRotation(h);

    mMinuteHand->setTransformOriginPoint(originPoint);

    mMinuteHand->setRotation(m);

    mSecondHand->setTransformOriginPoint(originPoint);

    mSecondHand->setRotation(s);

}

/*!

    \internal

*/

void HsAnalogClockWidget::handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event)

{

    if (!contains(event->pos())) {

        return;

    }

    emit clockTapped();

}