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_SCALE_DIV_H
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11 | #define QWT_SCALE_DIV_H
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12 |
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13 | #include "qwt_global.h"
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14 | #include "qwt_valuelist.h"
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15 | #include "qwt_double_interval.h"
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16 |
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17 | class QwtDoubleInterval;
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18 |
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19 | /*!
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20 | \brief A class representing a scale division
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21 |
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22 | A scale division consists of its limits and 3 list
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23 | of tick values qualified as major, medium and minor ticks.
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24 |
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25 | In most cases scale divisions are calculated by a QwtScaleEngine.
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26 |
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27 | \sa subDivideInto(), subDivide()
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28 | */
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29 |
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30 | class QWT_EXPORT QwtScaleDiv
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31 | {
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32 | public:
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33 | //! Scale tick types
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34 | enum TickType
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35 | {
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36 | NoTick = -1,
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37 |
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38 | MinorTick,
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39 | MediumTick,
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40 | MajorTick,
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41 |
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42 | NTickTypes
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43 | };
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44 |
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45 | explicit QwtScaleDiv();
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46 | explicit QwtScaleDiv(const QwtDoubleInterval &,
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47 | QwtValueList[NTickTypes]);
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48 | explicit QwtScaleDiv(double lowerBound, double upperBound,
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49 | QwtValueList[NTickTypes]);
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50 |
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51 | int operator==(const QwtScaleDiv &s) const;
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52 | int operator!=(const QwtScaleDiv &s) const;
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53 |
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54 | void setInterval(double lowerBound, double upperBound);
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55 | void setInterval(const QwtDoubleInterval &);
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56 | QwtDoubleInterval interval() const;
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57 |
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58 | double lowerBound() const;
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59 | double upperBound() const;
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60 | double range() const;
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61 |
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62 | bool contains(double v) const;
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63 |
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64 | void setTicks(int type, const QwtValueList &);
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65 | const QwtValueList &ticks(int type) const;
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66 |
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67 | void invalidate();
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68 | bool isValid() const;
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69 |
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70 | void invert();
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71 |
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72 | private:
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73 | double d_lowerBound;
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74 | double d_upperBound;
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75 | QwtValueList d_ticks[NTickTypes];
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76 |
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77 | bool d_isValid;
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78 | };
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79 |
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80 | /*!
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81 | Change the interval
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82 | \param lowerBound lower bound
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83 | \param upperBound upper bound
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84 | */
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85 | inline void QwtScaleDiv::setInterval(double lowerBound, double upperBound)
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86 | {
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87 | d_lowerBound = lowerBound;
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88 | d_upperBound = upperBound;
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89 | }
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90 |
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91 | /*!
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92 | \return lowerBound -> upperBound
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93 | */
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94 | inline QwtDoubleInterval QwtScaleDiv::interval() const
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95 | {
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96 | return QwtDoubleInterval(d_lowerBound, d_upperBound);
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97 | }
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98 |
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99 | /*!
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100 | \return lower bound
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101 | \sa upperBound()
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102 | */
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103 | inline double QwtScaleDiv::lowerBound() const
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104 | {
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105 | return d_lowerBound;
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106 | }
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107 |
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108 | /*!
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109 | \return upper bound
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110 | \sa lowerBound()
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111 | */
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112 | inline double QwtScaleDiv::upperBound() const
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113 | {
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114 | return d_upperBound;
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115 | }
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116 |
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117 | /*!
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118 | \return upperBound() - lowerBound()
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119 | */
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120 | inline double QwtScaleDiv::range() const
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121 | {
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122 | return d_upperBound - d_lowerBound;
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123 | }
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124 | #endif
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