/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not,

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

* Description:

*/

#include "ObjectCharm.h"

#include "Utilities.h"

#include <QtGui>

#include <QDebug>

#include <QApplication>

#include <QTimer>

namespace GVA {

// ----------------------------

// ObjectCharm

// ----------------------------

ObjectCharm::ObjectCharm(QObject *object)

  : m_object(object)

{

    m_object->installEventFilter(this);

    connect(m_object, SIGNAL(destroyed()), this, SLOT(onObjectDestroyed()));

}

void ObjectCharm::onObjectDestroyed() {

    deleteLater();

}

// ----------------------------

// TouchCircleCharm

// ----------------------------

TouchCircleCharm::TouchCircleCharm(QObject *object, QGraphicsItem *parent)

    : ObjectCharm(object),

      m_timer(new QTimer())

{

    m_item = new QGraphicsEllipseItem(QRect(0,0,20,20), parent);

    m_item->hide();

    m_item->setPen(QPen(QColor(Qt::black)));

    m_item->setBrush(QBrush(QColor(200, 0, 0)));

    m_item->setOpacity(0.7);

    m_item->setZValue(100);  // make sure it isn't obscured

    m_timer->setSingleShot(true);

    connect(m_timer, SIGNAL(timeout()), this, SLOT(onTimer()));

}

TouchCircleCharm::~TouchCircleCharm() {

    delete m_item;

    delete m_timer;

}

bool TouchCircleCharm::eventFilter(QObject *object, QEvent *event) {

    switch (event->type()) {

        case QEvent::GraphicsSceneMousePress: {

            // Show the item.

            QGraphicsSceneMouseEvent * me = static_cast<QGraphicsSceneMouseEvent*>(event);

            m_item->setPos(me->scenePos().x() - m_item->rect().width()/2,

                           me->scenePos().y() - m_item->rect().height()/2);

            // Change the color to indicate click.

            m_item->setBrush(QBrush(QColor(0, 200, 0)));

            m_item->show();

            m_timer->stop();

            break;

        }

        case QEvent::GraphicsSceneMouseMove: {

            if(m_item->isVisible()) {

                // Move it to new position.

                QGraphicsSceneMouseEvent * me = static_cast<QGraphicsSceneMouseEvent*>(event);

                m_item->setPos(me->scenePos().x() - m_item->rect().width()/2,

                               me->scenePos().y() - m_item->rect().height()/2);

                // Change the color to indicate drag.

                m_item->setBrush(QBrush(QColor(255, 255, 0)));

            }

            break;

        }

        case QEvent::GraphicsSceneMouseDoubleClick: {

            if(m_item->isVisible()) {

                // Change the color to indicate double click.

                m_item->setBrush(QBrush(QColor(0, 0, 200)));

                m_timer->stop();

            }

            break;

        }

        case QEvent::GraphicsSceneMouseRelease: {

            if(m_item->isVisible()) {

                // Change the color to indicate release.

                m_item->setBrush(QBrush(QColor(200, 0, 0)));

                // Start timer to hide it.

                m_timer->start(2000);

            }

            break;

        }

//        case QEvent::GraphicsSceneContextMenu: {

//            if(m_item->isVisible()) {

//                // Change the color to indicate context event.

//                m_item->setBrush(QBrush(QColor(0, 200, 200)));

//            }

//            break;

//        }

        default:

            break;

    }

    return object->eventFilter(object, event);

}

void TouchCircleCharm::onTimer() {   // slot

    m_item->hide();

}

}   // namespace GVA