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 | // vim: expandtab
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11 |
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12 | #ifndef QWT_DATA_H
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13 | #define QWT_DATA_H 1
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14 |
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15 | #include "qwt_global.h"
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16 | #include "qwt_array.h"
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17 | #include "qwt_double_rect.h"
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18 | #if QT_VERSION >= 0x040000
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19 | #include <QPolygonF>
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20 | #endif
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21 |
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22 | // MOC_SKIP_BEGIN
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23 |
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24 | #if defined(QWT_TEMPLATEDLL)
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25 |
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26 | template class QWT_EXPORT QwtArray<double>;
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27 |
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28 | #if QT_VERSION < 0x040000
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29 | #ifndef QWTARRAY_TEMPLATE_QWTDOUBLEPOINT // by mjo3
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30 | #define QWTARRAY_TEMPLATE_QWTDOUBLEPOINT
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31 | template class QWT_EXPORT QwtArray<QwtDoublePoint>;
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32 | #endif //end of QWTARRAY_TEMPLATE_QWTDOUBLEPOINT
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33 | #endif
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34 |
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35 | #endif
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36 |
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37 | // MOC_SKIP_END
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38 |
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39 | /*!
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40 | \brief QwtData defines an interface to any type of curve data.
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41 |
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42 | Classes, derived from QwtData may:
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43 | - store the data in almost any type of container
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44 | - calculate the data on the fly instead of storing it
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45 | */
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46 |
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47 | class QWT_EXPORT QwtData
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48 | {
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49 | public:
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50 | QwtData();
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51 | virtual ~QwtData();
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52 |
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53 | //! \return Pointer to a copy (virtual copy constructor)
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54 | virtual QwtData *copy() const = 0;
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55 |
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56 | //! \return Size of the data set
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57 | virtual size_t size() const = 0;
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58 |
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59 | /*!
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60 | Return the x value of data point i
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61 | \param i Index
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62 | \return x X value of data point i
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63 | */
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64 | virtual double x(size_t i) const = 0;
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65 | /*!
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66 | Return the y value of data point i
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67 | \param i Index
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68 | \return y Y value of data point i
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69 | */
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70 | virtual double y(size_t i) const = 0;
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71 |
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72 | virtual QwtDoubleRect boundingRect() const;
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73 |
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74 | protected:
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75 | /*!
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76 | Assignment operator (virtualized)
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77 | */
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78 | QwtData &operator=(const QwtData &);
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79 | };
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80 |
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81 |
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82 | /*!
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83 | \brief Data class containing a single QwtArray<QwtDoublePoint> object.
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84 | */
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85 | class QWT_EXPORT QwtPolygonFData: public QwtData
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86 | {
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87 | public:
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88 | #if QT_VERSION < 0x040000
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89 | QwtPolygonFData(const QwtArray<QwtDoublePoint> &);
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90 | #else
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91 | QwtPolygonFData(const QPolygonF &);
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92 | #endif
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93 |
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94 | QwtPolygonFData &operator=(const QwtPolygonFData &);
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95 | virtual QwtData *copy() const;
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96 |
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97 | virtual size_t size() const;
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98 | virtual double x(size_t i) const;
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99 | virtual double y(size_t i) const;
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100 |
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101 | #if QT_VERSION < 0x040000
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102 | const QwtArray<QwtDoublePoint> &data() const;
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103 | #else
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104 | const QPolygonF &data() const;
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105 | #endif
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106 |
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107 | private:
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108 | #if QT_VERSION < 0x040000
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109 | QwtArray<QwtDoublePoint> d_data;
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110 | #else
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111 | QPolygonF d_data;
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112 | #endif
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113 | };
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114 |
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115 | /*!
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116 | \brief Data class containing two QwtArray<double> objects.
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117 | */
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118 |
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119 | class QWT_EXPORT QwtArrayData: public QwtData
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120 | {
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121 | public:
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122 | QwtArrayData(const QwtArray<double> &x, const QwtArray<double> &y);
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123 | QwtArrayData(const double *x, const double *y, size_t size);
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124 | QwtArrayData &operator=(const QwtArrayData &);
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125 | virtual QwtData *copy() const;
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126 |
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127 | virtual size_t size() const;
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128 | virtual double x(size_t i) const;
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129 | virtual double y(size_t i) const;
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130 |
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131 | const QwtArray<double> &xData() const;
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132 | const QwtArray<double> &yData() const;
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133 |
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134 | virtual QwtDoubleRect boundingRect() const;
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135 |
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136 | private:
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137 | QwtArray<double> d_x;
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138 | QwtArray<double> d_y;
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139 | };
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140 |
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141 | /*!
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142 | \brief Data class containing two pointers to memory blocks of doubles.
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143 | */
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144 | class QWT_EXPORT QwtCPointerData: public QwtData
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145 | {
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146 | public:
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147 | QwtCPointerData(const double *x, const double *y, size_t size);
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148 | QwtCPointerData &operator=(const QwtCPointerData &);
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149 | virtual QwtData *copy() const;
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150 |
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151 | virtual size_t size() const;
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152 | virtual double x(size_t i) const;
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153 | virtual double y(size_t i) const;
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154 |
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155 | const double *xData() const;
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156 | const double *yData() const;
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157 |
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158 | virtual QwtDoubleRect boundingRect() const;
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159 |
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160 | private:
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161 | const double *d_x;
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162 | const double *d_y;
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163 | size_t d_size;
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164 | };
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165 |
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166 | #endif // !QWT_DATA
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