/*

 * Copyright 2010,2011 Timothy Rochford

 *

 *    This file is part of CuteFootball.

 *

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

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

 *    the Free Software Foundation, either version 3 of the License, or

 *    (at your option) any later version.

 *

 *    CuteFootball 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

 *    Lesser GNU General Public License for more details.

 *

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

 *    along with CuteFootball.  If not, see <http://www.gnu.org/licenses/>.

 *

 */

#include "cameraview.h"

#include <QGraphicsItem>

#include <QGraphicsProxyWidget>



#include <QDebug>



CameraView::CameraView(QGraphicsView& v,

                       QObject *parent) :

    QObject(parent),

    m_view(v),

    m_object(NULL),

    m_position(QPointF())

{

}



void CameraView::centerOn(QGraphicsItem *object)

{

//    qDebug() << "CameraView::centerOn(QGraphicsItem *object)";

    m_object = object;

    m_position = QPointF();

    m_view.centerOn(object);

}



void CameraView::centerOn(QPointF position)

{

//    qDebug() << "CameraView::centerOn(QPointF position)";

    m_position = position;

    m_object = NULL;

    m_view.centerOn(position);

}



QPointF CameraView::topLeft() const

{

    return m_view.mapToScene(m_view.rect().topLeft());

}

QPointF CameraView::bottomRight() const

{

    return m_view.mapToScene(m_view.rect().bottomRight());

}



QPointF CameraView::center() const

{

    return m_view.mapToScene(m_view.rect().center() );

}



void CameraView::update()

{

    if (m_object) {

//        qDebug() << "CameraView::update - object";

        m_view.centerOn(m_object);

    } else  {

//        qDebug() << "CameraView::update - pos";

        m_view.centerOn(m_position);

    }



    //    if (m_cameraView->centeredItem() == m_ball) {

    //        m_cameraView->centerOn(m_ball);

    //    }

    //    m_screenGraphicsFrameProxy->setPos(m_cameraView->topLeft());



    QPointF point;

    foreach(PositionedProxyWidget item, m_widgets) {

        switch (item.viewPos) {

        case TopLeft:

            point = topLeft();

            break;

        case Center:

            point = center();

            point = QPointF(point.x() - item.widget->rect().width() / 2,point.y());

            break;

        case BottomRight:

            {

            QPointF tmp = QPointF(bottomRight());

            point = tmp - QPointF(item.widget->size().width(),item.widget->size().height());

            }

            break;

        default:

            point = topLeft();

            break;

        }



        item.widget->setPos(point);

    }

}



void CameraView::appendProxyWidget(QGraphicsProxyWidget *item, ViewPosition viewPos )

{

      PositionedProxyWidget pw;

      pw.viewPos = viewPos;

      pw.widget = item;



      m_widgets.append(pw);

}