graph2dmobile.h

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/*************************************************************************************
 *  Copyright (C) 2010 by Aleix Pol <aleixpol@kde.org>                               *
 *                                                                                   *
 *  This program is free software; you can redistribute it and/or                    *
 *  modify it under the terms of the GNU General Public License                      *
 *  as published by the Free Software Foundation; either version 2                   *
 *  of the License, or (at your option) any later version.                           *
 *                                                                                   *
 *  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 General Public License for more details.                                     *
 *                                                                                   *
 *  You should have received a copy of the GNU General Public License                *
 *  along with this program; if not, write to the Free Software                      *
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA   *
 *************************************************************************************/


#ifndef GRAPH2DMOBILE_H
#define GRAPH2DMOBILE_H

#include <QDeclarativeItem>
#include <analitzaplot/plotter2d.h>

namespace Analitza {
class Variables;
}

class Graph2DMobile : public QDeclarativeItem, public Analitza::Plotter2D
{
    Q_OBJECT
    Q_PROPERTY(QAbstractItemModel* model READ model WRITE setModel)
    Q_PROPERTY(QRectF viewport READ lastViewport WRITE setViewport)
    Q_PROPERTY(bool squares READ squares WRITE setSquares)
    Q_PROPERTY(bool keepAspectRatio READ keepAspectRatio WRITE setKeepAspectRatio)
    Q_PROPERTY(bool currentFunction READ currentFunction WRITE setCurrentFunction)
    Q_PROPERTY(bool ticksShown READ ticksShownAtAll WRITE setTicksShownAtAll)
    public:
        Graph2DMobile(QDeclarativeItem* parent = 0);
        
        virtual void forceRepaint();
        virtual void viewportChanged() {}
        virtual void modelChanged();
        virtual int currentFunction() const { return m_currentFunction; }
        
        virtual void paint(QPainter* p, const QStyleOptionGraphicsItem* options, QWidget* w);
        
        void setCurrentFunction(int f) { m_currentFunction = f; }
        bool ticksShownAtAll() const { return ticksShown()!=0; }
        void setTicksShownAtAll(bool shown) { setTicksShown(shown ? Qt::Vertical|Qt::Horizontal : Qt::Orientations(0));}
        
    public slots:
        void translate(qreal x, qreal y);
        void scale(qreal s, int x, int y);
        void resetViewport();
        QStringList addFunction(const QString& expression, Analitza::Variables* vars=0);
        
    private slots:
        void updateFuncs(const QModelIndex& start, const QModelIndex& end);
        void addFuncs(const QModelIndex& parent, int start, int end);
        void removeFuncs(const QModelIndex& parent, int start, int end);
        
    private:
        bool m_dirty;
        int m_currentFunction;
        
        QPixmap m_buffer;
        QRectF defViewport;
};

#endif // GRAPH2DMOBILE_H