/*

* Copyright (c) 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:  Swipe Widget.

*

*/

#include <QDebug>

#include <HbStyleLoader>

#include <hbeffect.h>

#include <hblabel.h>

#include "snsrbigclockcontainer.h"

#include "snsranalogclockcontainer.h"

#include "snsrswipewidget.h"

const char *gSwipeCssFilePath =":/style/snsrswipewidget.css";

const char *gSwipeWidgetMLFilePath = ":/style/snsrswipewidget.widgetml";

const char *gSwipeColorCssFilePath = ":/style/snsrswipewidget_color.css";

const qreal gSwipeDownAngle = 270;

const qreal gSwipeAngleTolerance = 25;

/*!

    \class SnsrSwipeWidget

    \ingroup group_snsrbigclockscreensaverplugins

    \brief Screensaver swipe widget.

 */

/*!

    Constructs a new SnsrSwipeWidget.

    \param parent Parent object.

 */

SnsrSwipeWidget::SnsrSwipeWidget(QGraphicsItem* parent):

    HbWidget(parent),

    mSlideLabel(0), mSlideIcon(0)

{

    HbStyleLoader::registerFilePath(gSwipeCssFilePath);

    HbStyleLoader::registerFilePath(gSwipeWidgetMLFilePath);

    HbStyleLoader::registerFilePath(gSwipeColorCssFilePath);

    setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Preferred);

    createPrimitives();

    HbEffect::add(mSlideIcon,

        ":/xml/animate_portrait.fxml",

        "slideDownPortrait");

    reset();

    grabGesture(Qt::SwipeGesture);

}

/*!

    Destructs the class.

 */

SnsrSwipeWidget::~SnsrSwipeWidget()

{

    HbStyleLoader::unregisterFilePath( gSwipeCssFilePath );

    HbStyleLoader::unregisterFilePath( gSwipeWidgetMLFilePath );

    HbStyleLoader::unregisterFilePath( gSwipeColorCssFilePath );

    HbEffect::remove(mSlideIcon);

}

void SnsrSwipeWidget::start()

{

    // Start animation

    HbEffect::start(mSlideIcon, "slideDownPortrait", this, "animationComplete");

}

void SnsrSwipeWidget::reset()

{

    // Cancel animation and disable callback

    HbEffect::cancel(mSlideIcon, "slideDownPortrait", false, false);

}

void SnsrSwipeWidget::animationComplete(const HbEffect::EffectStatus &status)

{

    Q_UNUSED(status);

    HbEffect::start(mSlideIcon, "slideDownPortrait", this, "animationComplete");

}

/*!

    Creates all widget primitives.

 */

void SnsrSwipeWidget::createPrimitives()

{

    if (!mSlideLabel) {

        mSlideLabel = new HbLabel(this);

        mSlideLabel->setPlainText(hbTrId("txt_screensaver_swipe"));

        mSlideLabel->setAlignment(Qt::AlignCenter);

        mSlideLabel->setPreferredHeight(50.0);

        mSlideLabel->setPreferredWidth(224.0);

        HbStyle::setItemName(mSlideLabel, QLatin1String("slideLabel"));

    }

    if (!mSlideIcon) {

        mSlideIcon = new HbLabel(QLatin1String("slider"), this);

        mSlideIcon->setIcon(HbIcon(":/slider"));   

        mSlideIcon->setAspectRatioMode(Qt::KeepAspectRatioByExpanding);

        mSlideIcon->setAlignment(Qt::AlignCenter);

        mSlideIcon->setPreferredHeight(50.0);

        mSlideIcon->setPreferredWidth(100.0);

        HbStyle::setItemName(mSlideIcon, QLatin1String("slideIcon"));

    }

}

/*!

    \reimp

 */

void SnsrSwipeWidget::gestureEvent(QGestureEvent *event)

{

    SCREENSAVER_TEST_FUNC_ENTRY("SnsrSwipeWidget::gestureEvent")

    QGesture *gesture = event->gesture(Qt::SwipeGesture);

    QSwipeGesture *swipe = static_cast<QSwipeGesture *>(gesture);

    if ( swipe && swipe->state() == Qt::GestureStarted ) {

        start();

        event->accept(Qt::SwipeGesture);

    }

    else if ( swipe && swipe->state() == Qt::GestureFinished ) {

        // TODO: Remove following, currently shows some debug data on screen

        mSlideLabel->setPlainText( QString("angle=%1, horD=%2, verD=%3 ")

                .arg(swipe->swipeAngle())

                .arg(swipe->horizontalDirection())

                .arg(swipe->verticalDirection()) );

        // unclock with downward swipe

        qreal swipeAngle = swipe->swipeAngle();

        if ( abs(swipeAngle - gSwipeDownAngle) < gSwipeAngleTolerance ) {

            emit swipeDownDetected();

            event->accept(Qt::SwipeGesture);

            }

    }

    else { event->ignore(Qt::SwipeGesture); }

    SCREENSAVER_TEST_FUNC_EXIT("SnsrSwipeWidget::gestureEvent")

}