/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef GRID_H_
#define GRID_H_

#include "model.h"
#include <QGraphicsWidget>
#include <QChartGlobal>

class QGraphicsGridLayout;
class GridControl;
class Chart;

QTCOMMERCIALCHART_BEGIN_NAMESPACE
class QChart;
QTCOMMERCIALCHART_END_NAMESPACE

QTCOMMERCIALCHART_USE_NAMESPACE

class Grid : public QGraphicsWidget
{
    Q_OBJECT
public:
    enum State { NoState = 0, ZoomState, ScrollState};
    Grid(int size , QGraphicsItem *parent = 0 );
    ~Grid();
    QList<QChart*> charts();
    void createCharts();
    void createCharts(const QString& category);
    void replaceChart(QChart* oldChart, Chart* newChart);
    void setState(State state);
    State state(){ return m_state; };
    void setRubberPen(const QPen& pen);
Q_SIGNAL
    void chartSelected(QChart* chart);
protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
private:
    void clear();
private:
    int m_listCount;
    int m_valueMax;
    int m_valueCount;
    int m_size;
    DataTable m_dataTable;
    QHash<QChart *, int> m_chartHash;
    GridControl* m_control;
    State m_state;
    State m_currentState;
    QPointF m_origin;
    QGraphicsRectItem *m_rubberBand;
    QGraphicsGridLayout* m_gridLayout;
};

#endif /* GRID_H_ */