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_COMPASS_ROSE_H
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11 | #define QWT_COMPASS_ROSE_H 1
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12 |
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13 | #include <qpalette.h>
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14 | #include "qwt_global.h"
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15 |
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16 | class QPainter;
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17 |
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18 | /*!
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19 | \brief Abstract base class for a compass rose
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20 | */
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21 | class QWT_EXPORT QwtCompassRose
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22 | {
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23 | public:
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24 | virtual ~QwtCompassRose() {};
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25 |
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26 | //! Assign a palette
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27 | virtual void setPalette(const QPalette &p) { d_palette = p; }
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28 |
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29 | //! \return Current palette
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30 | const QPalette &palette() const { return d_palette; }
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31 |
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32 | /*!
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33 | Draw the rose
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34 |
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35 | \param painter Painter
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36 | \param center Center point
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37 | \param radius Radius of the rose
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38 | \param north Position
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39 | \param colorGroup Color group
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40 | */
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41 | virtual void draw(QPainter *painter, const QPoint ¢er,
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42 | int radius, double north,
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43 | QPalette::ColorGroup colorGroup = QPalette::Active) const = 0;
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44 |
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45 | private:
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46 | QPalette d_palette;
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47 | };
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48 |
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49 | /*!
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50 | \brief A simple rose for QwtCompass
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51 | */
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52 | class QWT_EXPORT QwtSimpleCompassRose: public QwtCompassRose
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53 | {
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54 | public:
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55 | QwtSimpleCompassRose(int numThorns = 8, int numThornLevels = -1);
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56 |
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57 | void setWidth(double w);
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58 |
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59 | //! \sa setWidth()
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60 | double width() const { return d_width; }
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61 |
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62 | void setNumThorns(int count);
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63 | int numThorns() const;
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64 |
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65 | void setNumThornLevels(int count);
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66 | int numThornLevels() const;
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67 |
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68 | void setShrinkFactor(double factor) { d_shrinkFactor = factor; }
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69 | double shrinkFactor() const { return d_shrinkFactor; }
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70 |
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71 | virtual void draw(QPainter *, const QPoint ¢er, int radius,
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72 | double north, QPalette::ColorGroup = QPalette::Active) const;
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73 |
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74 | static void drawRose(QPainter *,
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75 | #if QT_VERSION < 0x040000
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76 | const QColorGroup &,
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77 | #else
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78 | const QPalette &,
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79 | #endif
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80 | const QPoint ¢er, int radius, double origin, double width,
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81 | int numThorns, int numThornLevels, double shrinkFactor);
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82 |
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83 | private:
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84 | double d_width;
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85 | int d_numThorns;
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86 | int d_numThornLevels;
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87 | double d_shrinkFactor;
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88 | };
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89 |
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90 | #endif // QWT_COMPASS_ROSE_H
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