simpleplot.h

/******************************************************************************
*
*   This file is part of Cardio Curves.
*   Copyright (C) 2009 Jan Gunnar Andreassen
*   Copyright (C) 2009 Lars Magne Engedal
*
*   Cardio Curves 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, either version 2.1 of the License, or
*   (at your option) any later version.
*
*   Cardio Cruves 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 Cardio Curves.  If not, see <http://www.gnu.org/licenses/>.
*
*   Developer contact:
*       (janislazzaroni at users.sourceforge.net)
*       (engedal at users.sourceforge.net )
******************************************************************************/

#ifndef SIMPLEPLOT_H
#define SIMPLEPLOT_H

#include <QWidget>
#include <QDateTime>

class QwtScaleMap;
class QwtPlotCurve;

class SimplePlot : public QWidget
{
    Q_OBJECT
public:
    SimplePlot(int lineSize, QPointF lineAxis,
        const QDateTime &startStamp,
        QWidget *parent = 0);
    ~SimplePlot();

    void initCurves(int curveCount);
    void setData(const double *x, const QVector<QVector<double> > &vYData);
    void setLineAxisBounds(QPointF p);
    void setSampleBounds(QPoint p);
    QPoint getSampleBounds() const;

    bool isValid() const { return d_valid; }

    QSize minimumSizeHint() const { return QSize(400, 200); }

protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void enterEvent(QEvent *event);
    void leaveEvent(QEvent *event);

    virtual void paintEvent(QPaintEvent *event);

signals:
    void valueClicked(int line, int sample);

private:
    void createCurves();
    void shiftDown(QRect &rect, int offset) const { rect.translate(0, offset); }
    void drawContents(QPainter *painter);
    void drawMarker(QPainter *painter);
    void drawShadow(QPainter *painter);

    int samplesprCurve;
    int curveCount;
    int d_deltay;
    double d_deltax; 

    bool d_valid;
    bool markerVisible;

    QwtScaleMap *xMap;
    QwtScaleMap *yMap;

    QRect markerRect;
    QRect shadowRect;

    QPoint d_samplebounds;
    QPointF d_lineaxisbounds;

    QVector<QwtPlotCurve *> curves;

    QDateTime curvesStartTime;
};
inline void SimplePlot::setSampleBounds(QPoint p)
{ d_samplebounds = p; }
inline QPoint SimplePlot::getSampleBounds() const
{ return d_samplebounds; }
inline void SimplePlot::setLineAxisBounds(QPointF p)
{ d_lineaxisbounds = p; }

#endif // SIMPLEPLOT_H

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