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1 | 1 | /**************************************************************************** |
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2 | 2 | ** |
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3 | 3 | ** Copyright (C) 2012 Digia Plc |
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4 | 4 | ** All rights reserved. |
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5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
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6 | 6 | ** |
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7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
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8 | 8 | ** |
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9 | 9 | ** $QT_BEGIN_LICENSE$ |
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10 | 10 | ** Licensees holding valid Qt Commercial licenses may use this file in |
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11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
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12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
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13 | 13 | ** a written agreement between you and Digia. |
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14 | 14 | ** |
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15 | 15 | ** If you have questions regarding the use of this file, please use |
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16 | 16 | ** contact form at http://qt.digia.com |
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17 | 17 | ** $QT_END_LICENSE$ |
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18 | 18 | ** |
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19 | 19 | ****************************************************************************/ |
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20 | 20 | |
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21 | 21 | #include "qlogvalueaxis.h" |
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22 | 22 | #include "qlogvalueaxis_p.h" |
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23 | 23 | #include "chartlogvalueaxisx_p.h" |
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24 | 24 | #include "chartlogvalueaxisy_p.h" |
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25 | 25 | #include "abstractdomain_p.h" |
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26 | 26 | #include <float.h> |
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27 | 27 | #include <cmath> |
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28 | 28 | |
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29 | 29 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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30 | 30 | /*! |
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31 | 31 | \class QLogValueAxis |
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32 | 32 | \brief The QLogValueAxis class is used for manipulating chart's axis. |
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33 | 33 | \mainclass |
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34 | 34 | */ |
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35 | 35 | |
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36 | 36 | /*! |
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37 | 37 | \qmlclass DateTimeAxis QLogValueAxis |
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38 |
\brief The |
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38 | \brief The QLogValueAxis element is used for manipulating chart's axes | |
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39 | 39 | \inherits AbstractAxis |
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40 | 40 | */ |
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41 | 41 | |
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42 | 42 | /*! |
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43 | 43 | \property QLogValueAxis::min |
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44 | 44 | Defines the minimum value on the axis. |
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45 | 45 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. |
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46 | Value has to be greater then 0. | |
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46 | 47 | */ |
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47 | 48 | /*! |
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48 | \qmlproperty real ValuesAxis::min | |
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49 | \qmlproperty real LogValuesAxis::min | |
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49 | 50 | Defines the minimum value on the axis. |
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50 | 51 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. |
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52 | Value has to be greater then 0. | |
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51 | 53 | */ |
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52 | 54 | |
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53 | 55 | /*! |
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54 | 56 | \property QLogValueAxis::max |
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55 | 57 | Defines the maximum value on the axis. |
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56 | 58 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. |
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59 | Value has to be greater then 0. | |
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57 | 60 | */ |
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58 | 61 | /*! |
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59 | \qmlproperty real ValuesAxis::max | |
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62 | \qmlproperty real LogValuesAxis::max | |
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60 | 63 | Defines the maximum value on the axis. |
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61 | 64 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. |
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65 | Value has to be greater then 0. | |
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66 | */ | |
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67 | ||
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68 | /*! | |
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69 | \property QLogValueAxis::base | |
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70 | Defines the base of the logarithm. | |
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71 | Value has to be greater then 0 and not equal 1 | |
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72 | */ | |
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73 | /*! | |
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74 | \qmlproperty real LogValuesAxis::base | |
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75 | Defines the maximum value on the axis. | |
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76 | Defines the base of the logarithm. | |
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77 | Value has to be greater then 0 and not equal 1 | |
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78 | */ | |
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79 | ||
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80 | /*! | |
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81 | \property QLogValueAxis::labelFormat | |
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82 | Defines the label format of the axis. | |
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83 | Supported specifiers are: d, i, o, x, X, f, F, e, E, g, G, c | |
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84 | See QString::sprintf() for additional details. | |
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85 | */ | |
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86 | /*! | |
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87 | \qmlproperty real LogValuesAxis::labelFormat | |
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88 | Defines the label format of the axis. | |
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89 | Supported specifiers are: d, i, o, x, X, f, F, e, E, g, G, c | |
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90 | See QString::sprintf() for additional details. | |
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62 | 91 | */ |
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63 | 92 | |
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64 | 93 | /*! |
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65 | 94 | \fn void QLogValueAxis::minChanged(qreal min) |
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66 | 95 | Axis emits signal when \a min of axis has changed. |
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67 | 96 | */ |
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68 | 97 | /*! |
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69 | \qmlsignal ValuesAxis::onMinChanged(qreal min) | |
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98 | \qmlsignal LogValuesAxis::onMinChanged(qreal min) | |
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70 | 99 | Axis emits signal when \a min of axis has changed. |
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71 | 100 | */ |
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72 | 101 | |
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73 | 102 | /*! |
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74 | 103 | \fn void QLogValueAxis::maxChanged(qreal max) |
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75 | 104 | Axis emits signal when \a max of axis has changed. |
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76 | 105 | */ |
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77 | 106 | /*! |
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78 | \qmlsignal ValuesAxis::onMaxChanged(qreal max) | |
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107 | \qmlsignal LogValuesAxis::onMaxChanged(qreal max) | |
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79 | 108 | Axis emits signal when \a max of axis has changed. |
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80 | 109 | */ |
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81 | 110 | |
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82 | 111 | /*! |
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83 | 112 | \fn void QLogValueAxis::rangeChanged(qreal min, qreal max) |
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84 | 113 | Axis emits signal when \a min or \a max of axis has changed. |
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85 | 114 | */ |
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86 | 115 | |
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87 | 116 | /*! |
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117 | \fn void QLogValueAxis::labelFormatChanged(const QString &format) | |
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118 | Axis emits signal when \a format of axis labels has changed. | |
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119 | */ | |
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120 | /*! | |
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121 | \qmlsignal LogValueAxis::labelFormatChanged(const QString &format) | |
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122 | Axis emits signal when \a format of axis labels has changed. | |
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123 | */ | |
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124 | ||
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125 | /*! | |
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126 | \fn void QLogValueAxis::baseChanged(qreal base) | |
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127 | Axis emits signal when \a base of logarithm of the axis has changed. | |
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128 | */ | |
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129 | /*! | |
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130 | \qmlsignal LogValuesAxis::baseChanged(qreal base) | |
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131 | Axis emits signal when \a base of logarithm of the axis has changed. | |
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132 | */ | |
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133 | ||
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134 | /*! | |
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88 | 135 | Constructs an axis object which is a child of \a parent. |
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89 | 136 | */ |
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90 | 137 | QLogValueAxis::QLogValueAxis(QObject *parent) : |
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91 | 138 | QAbstractAxis(*new QLogValueAxisPrivate(this), parent) |
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92 | 139 | { |
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93 | 140 | |
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94 | 141 | } |
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95 | 142 | |
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96 | 143 | /*! |
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97 | 144 | \internal |
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98 | 145 | */ |
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99 | 146 | QLogValueAxis::QLogValueAxis(QLogValueAxisPrivate &d, QObject *parent) : QAbstractAxis(d, parent) |
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100 | 147 | { |
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101 | 148 | |
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102 | 149 | } |
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103 | 150 | |
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104 | 151 | /*! |
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105 | 152 | Destroys the object |
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106 | 153 | */ |
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107 | 154 | QLogValueAxis::~QLogValueAxis() |
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108 | 155 | { |
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109 | 156 | Q_D(QLogValueAxis); |
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110 | 157 | if (d->m_chart) |
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111 | 158 | d->m_chart->removeAxis(this); |
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112 | 159 | } |
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113 | 160 | |
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114 | 161 | void QLogValueAxis::setMin(qreal min) |
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115 | 162 | { |
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116 | 163 | Q_D(QLogValueAxis); |
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117 | 164 | setRange(min, qMax(d->m_max, min)); |
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118 | 165 | } |
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119 | 166 | |
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120 | 167 | qreal QLogValueAxis::min() const |
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121 | 168 | { |
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122 | 169 | Q_D(const QLogValueAxis); |
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123 | 170 | return d->m_min; |
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124 | 171 | } |
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125 | 172 | |
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126 | 173 | void QLogValueAxis::setMax(qreal max) |
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127 | 174 | { |
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128 | 175 | Q_D(QLogValueAxis); |
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129 | 176 | setRange(qMin(d->m_min, max), max); |
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130 | 177 | } |
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131 | 178 | |
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132 | 179 | qreal QLogValueAxis::max() const |
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133 | 180 | { |
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134 | 181 | Q_D(const QLogValueAxis); |
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135 | 182 | return d->m_max; |
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136 | 183 | } |
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137 | 184 | |
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138 | 185 | /*! |
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139 | 186 | Sets range from \a min to \a max on the axis. |
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140 | 187 | If min is greater than max then this function returns without making any changes. |
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141 | 188 | */ |
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142 | 189 | void QLogValueAxis::setRange(qreal min, qreal max) |
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143 | 190 | { |
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144 | 191 | Q_D(QLogValueAxis); |
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145 | 192 | bool changed = false; |
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146 | 193 | |
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147 | 194 | if (min > max) |
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148 | 195 | return; |
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149 | 196 | |
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150 | 197 | if (min > 0) { |
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151 | 198 | if (!qFuzzyCompare(d->m_min, min)) { |
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152 | 199 | d->m_min = min; |
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153 | 200 | changed = true; |
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154 | 201 | emit minChanged(min); |
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155 | 202 | } |
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156 | 203 | |
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157 | 204 | if (!qFuzzyCompare(d->m_max, max)) { |
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158 | 205 | d->m_max = max; |
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159 | 206 | changed = true; |
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160 | 207 | emit maxChanged(max); |
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161 | 208 | } |
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162 | 209 | |
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163 | 210 | if (changed) { |
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164 | 211 | emit rangeChanged(min, max); |
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165 | 212 | emit d->rangeChanged(min,max); |
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166 | 213 | } |
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167 | 214 | } |
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168 | 215 | } |
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169 | 216 | |
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170 | 217 | void QLogValueAxis::setLabelFormat(const QString &format) |
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171 | 218 | { |
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172 | 219 | Q_D(QLogValueAxis); |
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173 | 220 | d->m_format = format; |
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174 | 221 | emit labelFormatChanged(format); |
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175 | 222 | } |
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176 | 223 | |
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177 | 224 | QString QLogValueAxis::labelFormat() const |
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178 | 225 | { |
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179 | 226 | Q_D(const QLogValueAxis); |
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180 | 227 | return d->m_format; |
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181 | 228 | } |
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182 | 229 | |
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183 | 230 | void QLogValueAxis::setBase(qreal base) |
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184 | 231 | { |
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185 | 232 | // check if base is correct |
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186 | 233 | if (qFuzzyCompare(base, 1)) |
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187 | 234 | return; |
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188 | 235 | |
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189 | 236 | if (base > 0) { |
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190 | 237 | Q_D(QLogValueAxis); |
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191 | 238 | d->m_base = base; |
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192 | 239 | emit baseChanged(base); |
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193 | 240 | } |
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194 | 241 | } |
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195 | 242 | |
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196 | 243 | qreal QLogValueAxis::base() const |
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197 | 244 | { |
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198 | 245 | Q_D(const QLogValueAxis); |
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199 | 246 | return d->m_base; |
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200 | 247 | } |
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201 | 248 | |
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202 | 249 | /*! |
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203 | 250 | Returns the type of the axis |
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204 | 251 | */ |
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205 | 252 | QAbstractAxis::AxisType QLogValueAxis::type() const |
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206 | 253 | { |
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207 | 254 | return AxisTypeLogValue; |
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208 | 255 | } |
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209 | 256 | |
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210 | 257 | ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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211 | 258 | |
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212 | 259 | QLogValueAxisPrivate::QLogValueAxisPrivate(QLogValueAxis *q) |
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213 | 260 | : QAbstractAxisPrivate(q), |
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214 | 261 | m_min(1), |
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215 | 262 | m_max(1), |
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216 | 263 | m_base(10), |
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217 | 264 | m_format(QString::null) |
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218 | 265 | { |
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219 | 266 | } |
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220 | 267 | |
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221 | 268 | QLogValueAxisPrivate::~QLogValueAxisPrivate() |
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222 | 269 | { |
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223 | 270 | |
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224 | 271 | } |
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225 | 272 | |
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226 | 273 | void QLogValueAxisPrivate::setMin(const QVariant &min) |
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227 | 274 | { |
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228 | 275 | Q_Q(QLogValueAxis); |
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229 | 276 | bool ok; |
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230 | 277 | qreal value = min.toReal(&ok); |
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231 | 278 | if (ok) |
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232 | 279 | q->setMin(value); |
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233 | 280 | } |
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234 | 281 | |
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235 | 282 | void QLogValueAxisPrivate::setMax(const QVariant &max) |
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236 | 283 | { |
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237 | 284 | |
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238 | 285 | Q_Q(QLogValueAxis); |
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239 | 286 | bool ok; |
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240 | 287 | qreal value = max.toReal(&ok); |
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241 | 288 | if (ok) |
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242 | 289 | q->setMax(value); |
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243 | 290 | } |
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244 | 291 | |
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245 | 292 | void QLogValueAxisPrivate::setRange(const QVariant &min, const QVariant &max) |
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246 | 293 | { |
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247 | 294 | Q_Q(QLogValueAxis); |
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248 | 295 | bool ok1; |
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249 | 296 | bool ok2; |
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250 | 297 | qreal value1 = min.toReal(&ok1); |
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251 | 298 | qreal value2 = max.toReal(&ok2); |
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252 | 299 | if (ok1 && ok2) |
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253 | 300 | q->setRange(value1, value2); |
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254 | 301 | } |
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255 | 302 | |
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256 | 303 | void QLogValueAxisPrivate::setRange(qreal min, qreal max) |
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257 | 304 | { |
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258 | 305 | Q_Q(QLogValueAxis); |
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259 | 306 | bool changed = false; |
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260 | 307 | |
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261 | 308 | if (min > max) |
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262 | 309 | return; |
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263 | 310 | |
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264 | 311 | if (min > 0) { |
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265 | 312 | if (!qFuzzyCompare(m_min, min)) { |
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266 | 313 | m_min = min; |
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267 | 314 | changed = true; |
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268 | 315 | emit q->minChanged(min); |
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269 | 316 | } |
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270 | 317 | |
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271 | 318 | if (!qFuzzyCompare(m_max, max)) { |
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272 | 319 | m_max = max; |
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273 | 320 | changed = true; |
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274 | 321 | emit q->maxChanged(max); |
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275 | 322 | } |
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276 | 323 | |
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277 | 324 | if (changed) { |
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278 | 325 | emit rangeChanged(min,max); |
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279 | 326 | emit q->rangeChanged(min, max); |
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280 | 327 | } |
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281 | 328 | } |
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282 | 329 | } |
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283 | 330 | |
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284 | 331 | void QLogValueAxisPrivate::initializeGraphics(QGraphicsItem* parent) |
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285 | 332 | { |
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286 | 333 | Q_Q(QLogValueAxis); |
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287 | 334 | ChartAxis* axis(0); |
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288 | 335 | if (orientation() == Qt::Vertical) |
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289 | 336 | axis = new ChartLogValueAxisY(q,parent); |
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290 | 337 | if (orientation() == Qt::Horizontal) |
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291 | 338 | axis = new ChartLogValueAxisX(q,parent); |
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292 | 339 | |
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293 | 340 | m_item.reset(axis); |
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294 | 341 | QAbstractAxisPrivate::initializeGraphics(parent); |
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295 | 342 | } |
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296 | 343 | |
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297 | 344 | |
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298 | 345 | void QLogValueAxisPrivate::initializeDomain(AbstractDomain *domain) |
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299 | 346 | { |
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300 | 347 | if (orientation() == Qt::Vertical) { |
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301 | 348 | if(!qFuzzyCompare(m_max, m_min)) { |
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302 | 349 | domain->setRangeY(m_min, m_max); |
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303 | 350 | } |
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304 | 351 | else if ( domain->minY() > 0) { |
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305 | 352 | setRange(domain->minY(), domain->maxY()); |
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306 | 353 | } else { |
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307 | 354 | domain->setRangeY(m_min, domain->maxY()); |
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308 | 355 | } |
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309 | 356 | } |
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310 | 357 | if (orientation() == Qt::Horizontal) { |
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311 | 358 | if(!qFuzzyCompare(m_max, m_min)) { |
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312 | 359 | domain->setRangeX(m_min, m_max); |
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313 | 360 | } |
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314 | 361 | else if (domain->minX() > 0){ |
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315 | 362 | setRange(domain->minX(), domain->maxX()); |
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316 | 363 | } else { |
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317 | 364 | domain->setRangeX(m_min, domain->maxX()); |
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318 | 365 | } |
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319 | 366 | } |
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320 | 367 | } |
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321 | 368 | |
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322 | 369 | #include "moc_qlogvalueaxis.cpp" |
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323 | 370 | #include "moc_qlogvalueaxis_p.cpp" |
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324 | 371 | |
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325 | 372 | QTCOMMERCIALCHART_END_NAMESPACE |
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