/*

* 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:

*

*/

#include <QGraphicsScene>

#include <QGraphicsSceneMouseEvent>

#include <QGesture>

#include <QTouchEvent>

#include <HbTapGesture>

#include <HbPanGesture>

#include "hswidgettoucharea.h"

#include "hswidgethost.h"

#include "hsscene.h"

HsWidgetTouchArea::HsWidgetTouchArea(HsWidgetHost *widgetHost)

  : HbTouchArea(widgetHost),

    mWidgetHost(widgetHost)

{

    grabGesture(Qt::TapAndHoldGesture);

}

HsWidgetTouchArea::~HsWidgetTouchArea()

{

}

bool HsWidgetTouchArea::sceneEvent(QEvent *event)

{

    HsScene *scene = HsScene::instance();

    switch (event->type()) {

        case QEvent::TouchBegin:

        case QEvent::GraphicsSceneMousePress:

            emit scene->widgetTapStarted(mWidgetHost);

            break;        

        case QEvent::TouchEnd:

            {

                ungrabGesture(Qt::PanGesture);

                ungrabMouse();

                QPointF scenePos = static_cast<QTouchEvent *>(event)->touchPoints().first().scenePos();

                emit scene->widgetMoveFinished(scenePos, mWidgetHost);

            }

            break;

        case QEvent::GraphicsSceneMouseRelease:

            {

                ungrabGesture(Qt::PanGesture);

                ungrabMouse();

                QPointF scenePos = static_cast<QGraphicsSceneMouseEvent *>(event)->scenePos();

                emit scene->widgetMoveFinished(scenePos, mWidgetHost);

            }

            break;    

        default:

            break;

    }

    return HbTouchArea::sceneEvent(event);

}

QPainterPath HsWidgetTouchArea::shape() const

{       

    return mWidgetHost->shape();

}

void HsWidgetTouchArea::gestureEvent(QGestureEvent *event)

{

    HsScene *scene = HsScene::instance();

    // Tap-and-hold gesture.

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

    if (gesture) {

        if (gesture->state() == Qt::GestureFinished) {

            grabGesture(Qt::PanGesture);

            grabMouse();

            emit scene->widgetTapAndHoldFinished(event, mWidgetHost);

        }

        return;

    }

    // Pan gesture.

    gesture = event->gesture(Qt::PanGesture);

    if (gesture) {

        QPointF scenePos = event->mapToGraphicsScene(gesture->hotSpot());

        switch (gesture->state()) {

            case Qt::GestureStarted:

            case Qt::GestureUpdated:

                emit scene->widgetMoveUpdated(scenePos, mWidgetHost);

                break;

            case Qt::GestureCanceled:

            case Qt::GestureFinished:

                ungrabGesture(Qt::PanGesture);

                emit scene->widgetMoveFinished(scenePos, mWidgetHost);

                break;

            default:

                break;

        }

        return;

    }

}