| 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() );
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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 *,
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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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