/*

* 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: Home screen Calendar widget

*

*/

// System includes

#include <QGraphicsProxyWidget>

#include <HbDocumentLoader>

#include <QGraphicsLinearLayout>

#include <QGraphicsWidget>

#include <QGraphicsSceneMouseEvent>

#include <QPainter>

#include <QDebug>

#include <QTranslator>

#include <QDir>

#include <QDateTime>

#include <xqservicerequest.h>

#include <HbFrameDrawer>

#include <HbFrameItem>

#include <HbColorScheme>

#include <HbEvent>

#include <HbLabel>

#include <QMetaMethod>

#include <QCoreApplication>

#include <QGesture>

#include <qxml.h>

// User includes

#include "calendarwidget.h"

#include "contentlayouthandler.h"

#include "contentlayoutgesture.h"

#include "calendarwidgetdebug.h"

#include "saxhandler.h"

//Local constants

const char DOCML[] = ":/CalendarWidget";

#define CALWIDGET_HIGHLIGHT_ACTIVE

namespace {

    const char *WIDGET_BACKGROUND = "widgetBackground";

    const char *ICON_LABEL = "iconLabel";  

}

// ======== MEMBER FUNCTIONS ========

/*

 * CalendarWidget::CalendarWidget()

 */

CalendarWidget::CalendarWidget(QGraphicsItem* parent, Qt::WindowFlags flags)

    : HbWidget(parent, flags)

{

    LOGS("CalendarWidget::CalendarWidget");

    grabGesture(Qt::TapGesture);

    grabGesture(Qt::PanGesture);

    grabGesture(Qt::PinchGesture);

    grabGesture(Qt::SwipeGesture);

    mWidgetLoaded = false;

}

/*

 * CalendarWidget::~CalendarWidget()

 */

CalendarWidget::~CalendarWidget()

{

    LOGS("CalendarWidget::~CalendarWidget");

}

/*

 * CalendarWidget::boundingRect()

 */

QRectF CalendarWidget::boundingRect() const

{

    return childrenBoundingRect();

}

/*

 * CalendarWidget::shape()

 */

QPainterPath CalendarWidget::shape() const

{

    QPainterPath path;

    if( !mWidgetLoaded ) {

        path.addRect(boundingRect());

    }

    else {

        QRectF layoutRect( QPointF( mWidgetBackground->rect().topLeft().x() + mWidgetBackground->pos().x(), mWidgetBackground->rect().topLeft().y() + mWidgetBackground->pos().y() ), 

                           QPointF( mWidgetBackground->rect().bottomRight().x() + mWidgetBackground->pos().x(), mWidgetBackground->rect().bottomRight().y() + mWidgetBackground->pos().y() ));

        path.addRoundRect( layoutRect, 15 );

		//the icon path is adjusted because the icon is slightly smaller than the container

        path.moveTo( QPointF( mIconLabel->pos().x() + 3, mWidgetBackground->pos().y() ) );

        path.lineTo( QPointF( mIconLabel->pos().x() + 3, mIconLabel->pos().y() + 8 ) );

        path.lineTo( QPointF( mIconLabel->rect().topRight().x() + mIconLabel->pos().x() - 3, mIconLabel->pos().y() + 8 ) );

        path.lineTo( QPointF( mIconLabel->rect().bottomRight().x() + mIconLabel->pos().x() - 3, mWidgetBackground->pos().y() ) );

    }

    return path;

}

/*

 * CalendarWidget::loadWidget()

 */

bool CalendarWidget::loadWidget()

{

    LOGS("CalendarWidget::loadWidget");

    // Use document loader to load the contents

    HbDocumentLoader loader;

    mWidgetLoaded = true;

    bool ok = false;

    loader.load(DOCML, &ok);

    if (ok) {

        //load the containers that are necessary to get the shape

        mWidgetBackground = qobject_cast<HbLabel*>( loader.findWidget( WIDGET_BACKGROUND ) );

        mIconLabel = qobject_cast<HbLabel*>( loader.findWidget( ICON_LABEL ) );

        QObject* contentLayoutHandler = new ContentLayoutHandler();

        connectLayoutHandler(this, contentLayoutHandler, loader);

		QString fileName( "C:/private/20022F35/gestures.xml" );

		QFile xmlConfiguration(fileName);

		bool fileExists = xmlConfiguration.open( QIODevice::ReadOnly );

		if (fileExists) {

            xmlConfiguration.close();

        }

        else {

            QFile sourceFile("Z:/resource/gestures.xml");

            fileExists = sourceFile.open(QFile::ReadOnly);

            fileExists = xmlConfiguration.open(QFile::WriteOnly | QFile::Truncate);

            fileExists = xmlConfiguration.write(sourceFile.readAll()) >= 0;

            sourceFile.close();

            xmlConfiguration.close();

        }

		if (fileExists) {

            parseFile(fileName, loader);

        }

        if (dynamic_cast<QGraphicsLinearLayout*> (contentLayoutHandler)) {

            setPreferredSize(

                dynamic_cast<QGraphicsLinearLayout*>(contentLayoutHandler)->preferredSize());

            parentWidget()->resize(preferredSize()); // workaround for layouting

            setLayout(dynamic_cast<QGraphicsLinearLayout*>(contentLayoutHandler));

        }

        else {

            mWidgetLoaded = false;

        }    

    }

    else {

        mWidgetLoaded = false;

    }

    return mWidgetLoaded;

}

/*

 * CalendarWidget::connectLayoutHandler()

 */

void CalendarWidget::connectLayoutHandler(HbWidget *widget, QObject *layoutHandler, HbDocumentLoader& loader)

{

    LOGS("CalendarWidget::connectLayoutHandler");

    if (!widget || !layoutHandler) {

        return;

    }

    int methodIndex = layoutHandler->metaObject()->

        indexOfSlot("initializeLayout(HbDocumentLoader,QObject*)");

    if (methodIndex >= 0) {

        layoutHandler->metaObject()->method(methodIndex).invoke(layoutHandler,

            Q_ARG(const HbDocumentLoader, loader), Q_ARG(QObject*, this));

    }

    else {

        return;

    }

    methodIndex = layoutHandler->metaObject()->indexOfSlot("onThemeChange()");

    if (methodIndex >= 0) {

        connect(this, SIGNAL(themeChanged()), layoutHandler, SLOT(onThemeChange()));

    }

    methodIndex = layoutHandler->metaObject()->indexOfSlot("highlightOn(QPointF&)");

    if (methodIndex >= 0) {

        connect(this, SIGNAL(mousePressed(QPointF&)),

            layoutHandler, SLOT(highlightOn(QPointF&)));

    }

    methodIndex = layoutHandler->metaObject()->indexOfSlot("highlightOff()");

    if (methodIndex >= 0) {

        connect(this, SIGNAL(mouseReleased()),

            layoutHandler, SLOT(highlightOff()));

    }

}

/*

 * CalendarWidget::loadTranslator

 */

void CalendarWidget::loadTranslator()

{

    LOGS("CalendarWidget::loadTranslator");

    QLocale::setDefault(QLocale::English);

    QString locale = QLocale::system().languageToString(QLocale::system().language());

    qDebug() << "locale: " << locale;

    QString lang = QLocale::system().name();

    mCommonTranslator = new QTranslator();

    QString path = "Z:/resource/qt/translations/";

    QString filename = "calwidget_" + lang + ".qm";

    qDebug() << "path: " << path;

    qDebug() << "filename: " << filename;

    bool loaded = mCommonTranslator->load(filename,path);

    qDebug() << "loaded = " << loaded;

    QCoreApplication::installTranslator(mCommonTranslator);

}

/*

 * CalendarWidget::event()

 */

bool CalendarWidget::event(QEvent * event)

{

    LOGS("CalendarWidget::event");

    bool consumed = false;

    QEvent::Type eventType = event->type();

    if (eventType == HbEvent::ThemeChanged) {

        consumed = true;

        emit themeChanged();

    }

    if (eventType == QEvent::Gesture) {

        QGestureEvent* gesture = static_cast<QGestureEvent*>(event);

        QList<QGesture*> gestureList = gesture->gestures();

        for (int i = 0; i < gestureList.count(); i++) {

            int type = gestureList.at(i)->gestureType();

            qDebug() << "type = " << type;

        }

        gestureEvent(static_cast<QGestureEvent*>(event));

        consumed = true;

    }

    return consumed;

}

/*

 * CalendarWidget::onInitialize()

 */

void CalendarWidget::onInitialize()

{

    LOGS("CalendarWidget::onInitialize");

    loadTranslator();

    if (loadWidget()) {

#ifdef CALWIDGET_HIGHLIGHT_ACTIVE

        // Register event filter for highlighting

        QCoreApplication* coreApp = QCoreApplication::instance();

        if (coreApp) {

            coreApp->installEventFilter(this);

        }

#endif

    }

    else {

        //loading failed

        emit finished();

    }

}

/*

 * CalendarWidget::onShow()

 */

void CalendarWidget::onShow()

{

    LOGS("CalendarWidget::onShow");

    emit mouseReleased();

}

/*

* CalendarWidget::onHide()

*/

void CalendarWidget::onHide()

{

    LOGS("CalendarWidget::onHide");

}

/*

 * CalendarWidget::onUninitialize()

 */

void CalendarWidget::onUninitialize()

{

    LOGS("CalendarWidget::onUninitialize");

#ifdef CALWIDGET_HIGHLIGHT_ACTIVE

    // Uninstall event filter

    QCoreApplication* coreApp = QCoreApplication::instance();

    if (coreApp) {

        coreApp->removeEventFilter(this);

    }

#endif

}

/*

 * CalendarWidget::eventFilter()

 */

bool CalendarWidget::eventFilter(QObject *obj, QEvent *event)

{

    Q_UNUSED(obj);

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

        QGraphicsSceneMouseEvent* mouseEvent = (QGraphicsSceneMouseEvent*)event;

        QPointF pos = mouseEvent->scenePos();

//        emit mousePressed(pos);

    }

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

        emit mouseReleased();

    }

    return false;

}

/*

 * CalendarWidget::gestureEvent()

 */

void CalendarWidget::gestureEvent(QGestureEvent *event)

{

    LOGS("CalendarWidget::gestureEvent");

    if (QTapGesture *tap = (QTapGesture*)event->gesture(Qt::TapGesture)) {

        QPointF posFromScene = mapFromScene(event->mapToGraphicsScene(tap->position()));

        switch(tap->state()) {

            case Qt::GestureStarted:

                emit mousePressed(posFromScene);

                LOGS("CalendarWidget::gestureEvent => gestureStarted");

                break;

            case Qt::GestureUpdated:

                LOGS("CalendarWidget::gestureEvent => gestureUpdated");

                break;

            case Qt::GestureFinished:

                emit tapGesture(posFromScene);

                emit mouseReleased();

                LOGS("CalendarWidget::gestureEvent => gestureFinished");

                break;

            case Qt::GestureCanceled:

                LOGS("CalendarWidget::gestureEvent => gestureCanceled");

                break;

            default:

                break;

        }

    }

    if(QPanGesture *pan = (QPanGesture*)event->gesture(Qt::PanGesture)) {

        switch (pan->state()) {

            case Qt::GestureFinished:

                emit mouseReleased();

                break;

            default:

                break;

        }

    }

    if (QSwipeGesture *swipe = (QSwipeGesture*)event->gesture(Qt::SwipeGesture)) {

        switch (swipe->state()) {

            case Qt::GestureFinished:

                emit mouseReleased();

                break;

            default:

                break;

        }

    }

    if (QPinchGesture *pinch = (QPinchGesture*)event->gesture(Qt::PinchGesture)) {

        switch (pinch->state()) {

            case Qt::GestureFinished:

                emit mouseReleased();

                break;

            default:

                break;

        }

    }

}

/*

 *  CalendarWidget::mousePressEvent()

 */

void CalendarWidget::mousePressEvent(QGraphicsSceneMouseEvent *event)

{

    Q_UNUSED(event);

    LOGS("CalendarWidget::mousePressEvent");

}

/*

 *  CalendarWidget::mouseReleaseEvent()

 */

void CalendarWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

{

    Q_UNUSED(event);

    LOGS("CalendarWidget::mouseReleaseEvent");

}

bool CalendarWidget::parseFile(QString& fileName, HbDocumentLoader& loader)

{

    LOGS("CalendarWidget::ParseFile");

    QFile file(fileName);

    QXmlInputSource inputSource(&file);

    QXmlSimpleReader reader;

    SaxHandler xmlParser(this, loader);

    reader.setContentHandler(&xmlParser);

    reader.setErrorHandler(&xmlParser);

    return reader.parse(inputSource);

}

//End of file