1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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2 | * Qwt Widget Library
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3 | * Copyright (C) 1997 Josef Wilgen
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4 | * Copyright (C) 2002 Uwe Rathmann
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5 | *
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6 | * This library is free software; you can redistribute it and/or
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7 | * modify it under the terms of the Qwt License, Version 1.0
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8 | *****************************************************************************/
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9 |
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10 | #ifndef QWT_PLOT_SERIES_ITEM_H
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11 | #define QWT_PLOT_SERIES_ITEM_H
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12 |
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13 | #include "qwt_global.h"
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14 | #include "qwt_plot_item.h"
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15 | #include "qwt_scale_div.h"
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16 | #include "qwt_series_data.h"
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17 | #include "qwt_series_store.h"
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18 |
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19 | /*!
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20 | \brief Base class for plot items representing a series of samples
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21 | */
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22 | class QWT_EXPORT QwtPlotSeriesItem: public QwtPlotItem,
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23 | public virtual QwtAbstractSeriesStore
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24 | {
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25 | public:
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26 | explicit QwtPlotSeriesItem( const QString &title = QString::null );
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27 | explicit QwtPlotSeriesItem( const QwtText &title );
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28 |
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29 | virtual ~QwtPlotSeriesItem();
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30 |
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31 | void setOrientation( Qt::Orientation );
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32 | Qt::Orientation orientation() const;
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33 |
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34 | virtual void draw( QPainter *p,
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35 | const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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36 | const QRectF & ) const;
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37 |
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38 | /*!
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39 | Draw a subset of the samples
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40 |
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41 | \param painter Painter
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42 | \param xMap Maps x-values into pixel coordinates.
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43 | \param yMap Maps y-values into pixel coordinates.
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44 | \param canvasRect Contents rectangle of the canvas
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45 | \param from Index of the first point to be painted
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46 | \param to Index of the last point to be painted. If to < 0 the
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47 | curve will be painted to its last point.
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48 | */
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49 | virtual void drawSeries( QPainter *painter,
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50 | const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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51 | const QRectF &canvasRect, int from, int to ) const = 0;
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52 |
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53 | virtual QRectF boundingRect() const;
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54 |
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55 | virtual void updateScaleDiv(
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56 | const QwtScaleDiv &, const QwtScaleDiv & );
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57 |
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58 | protected:
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59 | virtual void dataChanged();
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60 |
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61 | private:
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62 | class PrivateData;
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63 | PrivateData *d_data;
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64 | };
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65 |
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66 | #endif
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