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_ABSTRACT_SCALE_H
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11 | #define QWT_ABSTRACT_SCALE_H
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12 |
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13 | #include "qwt_global.h"
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14 |
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15 | class QwtScaleEngine;
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16 | class QwtAbstractScaleDraw;
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17 | class QwtScaleDiv;
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18 | class QwtScaleMap;
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19 | class QwtDoubleInterval;
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20 |
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21 | /*!
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22 | \brief An abstract base class for classes containing a scale
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23 |
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24 | QwtAbstractScale is used to provide classes with a QwtScaleDraw,
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25 | and a QwtScaleDiv. The QwtScaleDiv might be set explicitely
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26 | or calculated by a QwtScaleEngine.
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27 | */
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28 |
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29 | class QWT_EXPORT QwtAbstractScale
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30 | {
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31 | public:
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32 | QwtAbstractScale();
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33 | virtual ~QwtAbstractScale();
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34 |
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35 | void setScale(double vmin, double vmax, double step = 0.0);
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36 | void setScale(const QwtDoubleInterval &, double step = 0.0);
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37 | void setScale(const QwtScaleDiv &s);
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38 |
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39 | void setAutoScale();
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40 | bool autoScale() const;
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41 |
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42 | void setScaleMaxMajor( int ticks);
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43 | int scaleMaxMinor() const;
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44 |
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45 | void setScaleMaxMinor( int ticks);
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46 | int scaleMaxMajor() const;
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47 |
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48 | void setScaleEngine(QwtScaleEngine *);
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49 | const QwtScaleEngine *scaleEngine() const;
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50 | QwtScaleEngine *scaleEngine();
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51 |
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52 | const QwtScaleMap &scaleMap() const;
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53 |
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54 | protected:
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55 | void rescale(double vmin, double vmax, double step = 0.0);
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56 |
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57 | void setAbstractScaleDraw(QwtAbstractScaleDraw *);
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58 | const QwtAbstractScaleDraw *abstractScaleDraw() const;
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59 | QwtAbstractScaleDraw *abstractScaleDraw();
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60 |
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61 | virtual void scaleChange();
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62 |
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63 | private:
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64 | void updateScaleDraw();
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65 |
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66 | class PrivateData;
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67 | PrivateData *d_data;
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68 | };
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69 |
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70 | #endif
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