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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. |
|
5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
|
6 | 6 | ** |
|
7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
|
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 |
|
11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
|
12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
|
13 | 13 | ** a written agreement between you and Digia. |
|
14 | 14 | ** |
|
15 | 15 | ** If you have questions regarding the use of this file, please use |
|
16 | 16 | ** contact form at http://qt.digia.com |
|
17 | 17 | ** $QT_END_LICENSE$ |
|
18 | 18 | ** |
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19 | 19 | ****************************************************************************/ |
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20 | 20 | |
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21 | 21 | #include "chartaxis_p.h" |
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22 | 22 | #include "qabstractaxis.h" |
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23 | 23 | #include "qabstractaxis_p.h" |
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24 | 24 | #include "chartpresenter_p.h" |
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25 | 25 | #include "domain_p.h" |
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26 | 26 | #include <qmath.h> |
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27 | 27 | #include <QDateTime> |
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28 | #include <QValueAxis> | |
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28 | 29 | |
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29 | 30 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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30 | 31 | |
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31 | 32 | ChartAxis::ChartAxis(QAbstractAxis *axis,ChartPresenter *presenter) : ChartElement(presenter), |
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32 | 33 | m_chartAxis(axis), |
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33 | 34 | m_labelsAngle(0), |
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34 | 35 | m_grid(new QGraphicsItemGroup(presenter->rootItem())), |
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35 | 36 | m_shades(new QGraphicsItemGroup(presenter->rootItem())), |
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36 | 37 | m_labels(new QGraphicsItemGroup(presenter->rootItem())), |
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37 | 38 | m_arrow(new QGraphicsItemGroup(presenter->rootItem())), |
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38 | 39 | m_min(0), |
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39 | 40 | m_max(0), |
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40 | 41 | m_animation(0), |
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41 | 42 | m_minWidth(0), |
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42 | 43 | m_minHeight(0) |
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43 | 44 | { |
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44 | 45 | //initial initialization |
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45 | 46 | m_arrow->setZValue(ChartPresenter::AxisZValue); |
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46 | 47 | m_arrow->setHandlesChildEvents(false); |
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47 | 48 | m_labels->setZValue(ChartPresenter::AxisZValue); |
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48 | 49 | m_shades->setZValue(ChartPresenter::ShadesZValue); |
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49 | 50 | m_grid->setZValue(ChartPresenter::GridZValue); |
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50 | 51 | |
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51 | 52 | QObject::connect(m_chartAxis->d_ptr.data(),SIGNAL(updated()),this,SLOT(handleAxisUpdated())); |
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52 | 53 | |
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53 | 54 | QGraphicsSimpleTextItem item; |
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54 | 55 | m_font = item.font(); |
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55 | 56 | |
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56 | 57 | } |
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57 | 58 | |
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58 | 59 | ChartAxis::~ChartAxis() |
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59 | 60 | { |
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60 | 61 | } |
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61 | 62 | |
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62 | 63 | void ChartAxis::setAnimation(AxisAnimation* animation) |
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63 | 64 | { |
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64 | 65 | m_animation=animation; |
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65 | 66 | } |
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66 | 67 | |
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67 | 68 | void ChartAxis::setLayout(QVector<qreal> &layout) |
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68 | 69 | { |
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69 | 70 | m_layoutVector=layout; |
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70 | 71 | } |
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71 | 72 | |
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72 | 73 | void ChartAxis::createItems(int count) |
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73 | 74 | { |
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74 | 75 | if (m_arrow->children().size() == 0) |
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75 | 76 | m_arrow->addToGroup(new AxisItem(this,presenter()->rootItem())); |
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76 | 77 | for (int i = 0; i < count; ++i) { |
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77 | 78 | m_grid->addToGroup(new QGraphicsLineItem(presenter()->rootItem())); |
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78 | 79 | m_labels->addToGroup(new QGraphicsSimpleTextItem(presenter()->rootItem())); |
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79 | 80 | m_arrow->addToGroup(new QGraphicsLineItem(presenter()->rootItem())); |
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80 | 81 | if ((m_grid->childItems().size())%2 && m_grid->childItems().size()>2) m_shades->addToGroup(new QGraphicsRectItem(presenter()->rootItem())); |
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81 | 82 | } |
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82 | 83 | } |
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83 | 84 | |
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84 | 85 | void ChartAxis::deleteItems(int count) |
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85 | 86 | { |
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86 | 87 | QList<QGraphicsItem *> lines = m_grid->childItems(); |
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87 | 88 | QList<QGraphicsItem *> labels = m_labels->childItems(); |
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88 | 89 | QList<QGraphicsItem *> shades = m_shades->childItems(); |
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89 | 90 | QList<QGraphicsItem *> axis = m_arrow->childItems(); |
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90 | 91 | |
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91 | 92 | for (int i = 0; i < count; ++i) { |
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92 | 93 | if (lines.size()%2 && lines.size() > 1) delete(shades.takeLast()); |
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93 | 94 | delete(lines.takeLast()); |
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94 | 95 | delete(labels.takeLast()); |
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95 | 96 | delete(axis.takeLast()); |
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96 | 97 | } |
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97 | 98 | } |
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98 | 99 | |
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99 | 100 | void ChartAxis::updateLayout(QVector<qreal> &layout) |
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100 | 101 | { |
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101 | 102 | int diff = m_layoutVector.size() - layout.size(); |
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102 | 103 | |
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103 | 104 | if (diff>0) { |
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104 | 105 | deleteItems(diff); |
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105 | 106 | } |
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106 | 107 | else if (diff<0) { |
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107 | 108 | createItems(-diff); |
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108 | 109 | } |
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109 | 110 | |
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110 | 111 | if(diff<0) handleAxisUpdated(); |
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111 | 112 | |
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112 | 113 | if (m_animation) { |
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113 | 114 | switch(presenter()->state()){ |
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114 | 115 | case ChartPresenter::ZoomInState: |
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115 | 116 | m_animation->setAnimationType(AxisAnimation::ZoomInAnimation); |
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116 | 117 | m_animation->setAnimationPoint(presenter()->statePoint()); |
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117 | 118 | break; |
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118 | 119 | case ChartPresenter::ZoomOutState: |
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119 | 120 | m_animation->setAnimationType(AxisAnimation::ZoomOutAnimation); |
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120 | 121 | m_animation->setAnimationPoint(presenter()->statePoint()); |
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121 | 122 | break; |
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122 | 123 | case ChartPresenter::ScrollUpState: |
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123 | 124 | case ChartPresenter::ScrollLeftState: |
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124 | 125 | m_animation->setAnimationType(AxisAnimation::MoveBackwordAnimation); |
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125 | 126 | break; |
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126 | 127 | case ChartPresenter::ScrollDownState: |
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127 | 128 | case ChartPresenter::ScrollRightState: |
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128 | 129 | m_animation->setAnimationType(AxisAnimation::MoveForwardAnimation); |
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129 | 130 | break; |
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130 | 131 | case ChartPresenter::ShowState: |
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131 | 132 | m_animation->setAnimationType(AxisAnimation::DefaultAnimation); |
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132 | 133 | break; |
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133 | 134 | } |
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134 | 135 | m_animation->setValues(m_layoutVector,layout); |
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135 | 136 | presenter()->startAnimation(m_animation); |
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136 | 137 | } |
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137 | 138 | else { |
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138 | 139 | setLayout(layout); |
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139 | 140 | updateGeometry(); |
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140 | 141 | } |
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141 | 142 | } |
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142 | 143 | |
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143 | 144 | void ChartAxis::setArrowOpacity(qreal opacity) |
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144 | 145 | { |
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145 | 146 | m_arrow->setOpacity(opacity); |
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146 | 147 | } |
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147 | 148 | |
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148 | 149 | qreal ChartAxis::arrowOpacity() const |
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149 | 150 | { |
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150 | 151 | return m_arrow->opacity(); |
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151 | 152 | } |
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152 | 153 | |
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153 | 154 | void ChartAxis::setArrowVisibility(bool visible) |
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154 | 155 | { |
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155 | 156 | m_arrow->setOpacity(visible); |
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156 | 157 | } |
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157 | 158 | |
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158 | 159 | void ChartAxis::setGridOpacity(qreal opacity) |
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159 | 160 | { |
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160 | 161 | m_grid->setOpacity(opacity); |
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161 | 162 | } |
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162 | 163 | |
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163 | 164 | qreal ChartAxis::gridOpacity() const |
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164 | 165 | { |
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165 | 166 | return m_grid->opacity(); |
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166 | 167 | } |
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167 | 168 | |
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168 | 169 | void ChartAxis::setGridVisibility(bool visible) |
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169 | 170 | { |
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170 | 171 | m_grid->setOpacity(visible); |
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171 | 172 | } |
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172 | 173 | |
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173 | 174 | void ChartAxis::setLabelsOpacity(qreal opacity) |
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174 | 175 | { |
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175 | 176 | m_labels->setOpacity(opacity); |
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176 | 177 | } |
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177 | 178 | |
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178 | 179 | qreal ChartAxis::labelsOpacity() const |
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179 | 180 | { |
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180 | 181 | return m_labels->opacity(); |
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181 | 182 | } |
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182 | 183 | |
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183 | 184 | void ChartAxis::setLabelsVisibility(bool visible) |
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184 | 185 | { |
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185 | 186 | m_labels->setOpacity(visible); |
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186 | 187 | } |
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187 | 188 | |
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188 | 189 | void ChartAxis::setShadesOpacity(qreal opacity) |
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189 | 190 | { |
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190 | 191 | m_shades->setOpacity(opacity); |
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191 | 192 | } |
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192 | 193 | |
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193 | 194 | qreal ChartAxis::shadesOpacity() const |
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194 | 195 | { |
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195 | 196 | return m_shades->opacity(); |
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196 | 197 | } |
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197 | 198 | |
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198 | 199 | void ChartAxis::setShadesVisibility(bool visible) |
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199 | 200 | { |
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200 | 201 | m_shades->setVisible(visible); |
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201 | 202 | } |
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202 | 203 | |
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203 | 204 | void ChartAxis::setLabelsAngle(int angle) |
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204 | 205 | { |
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205 | 206 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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206 | 207 | item->setRotation(angle); |
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207 | 208 | } |
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208 | 209 | |
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209 | 210 | m_labelsAngle=angle; |
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210 | 211 | } |
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211 | 212 | |
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212 | 213 | void ChartAxis::setLabelsPen(const QPen &pen) |
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213 | 214 | { |
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214 | 215 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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215 | 216 | static_cast<QGraphicsSimpleTextItem*>(item)->setPen(pen); |
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216 | 217 | } |
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217 | 218 | } |
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218 | 219 | |
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219 | 220 | void ChartAxis::setLabelsBrush(const QBrush &brush) |
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220 | 221 | { |
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221 | 222 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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222 | 223 | static_cast<QGraphicsSimpleTextItem*>(item)->setBrush(brush); |
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223 | 224 | } |
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224 | 225 | } |
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225 | 226 | |
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226 | 227 | void ChartAxis::setLabelsFont(const QFont &font) |
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227 | 228 | { |
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228 | 229 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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229 | 230 | static_cast<QGraphicsSimpleTextItem*>(item)->setFont(font); |
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230 | 231 | } |
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231 | 232 | m_font = font; |
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232 | 233 | } |
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233 | 234 | |
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234 | 235 | void ChartAxis::setShadesBrush(const QBrush &brush) |
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235 | 236 | { |
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236 | 237 | foreach(QGraphicsItem* item , m_shades->childItems()) { |
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237 | 238 | static_cast<QGraphicsRectItem*>(item)->setBrush(brush); |
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238 | 239 | } |
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239 | 240 | } |
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240 | 241 | |
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241 | 242 | void ChartAxis::setShadesPen(const QPen &pen) |
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242 | 243 | { |
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243 | 244 | foreach(QGraphicsItem* item , m_shades->childItems()) { |
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244 | 245 | static_cast<QGraphicsRectItem*>(item)->setPen(pen); |
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245 | 246 | } |
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246 | 247 | } |
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247 | 248 | |
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248 | 249 | void ChartAxis::setArrowPen(const QPen &pen) |
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249 | 250 | { |
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250 | 251 | foreach(QGraphicsItem* item , m_arrow->childItems()) { |
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251 | 252 | static_cast<QGraphicsLineItem*>(item)->setPen(pen); |
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252 | 253 | } |
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253 | 254 | } |
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254 | 255 | |
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255 | 256 | void ChartAxis::setGridPen(const QPen &pen) |
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256 | 257 | { |
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257 | 258 | foreach(QGraphicsItem* item , m_grid->childItems()) { |
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258 | 259 | static_cast<QGraphicsLineItem*>(item)->setPen(pen); |
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259 | 260 | } |
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260 | 261 | } |
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261 | 262 | |
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262 | 263 | bool ChartAxis::isEmpty() |
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263 | 264 | { |
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264 | 265 | return m_rect.isEmpty() || qFuzzyIsNull(m_min - m_max); |
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265 | 266 | } |
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266 | 267 | |
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267 | 268 | void ChartAxis::handleDomainUpdated() |
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268 | 269 | { |
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269 | 270 | Domain* domain = qobject_cast<Domain*>(sender()); |
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270 | 271 | qreal min(0); |
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271 | 272 | qreal max(0); |
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272 | 273 | |
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273 | 274 | if(m_chartAxis->orientation()==Qt::Horizontal) { |
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274 | 275 | min = domain->minX(); |
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275 | 276 | max = domain->maxX(); |
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276 | 277 | } |
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277 | 278 | else if (m_chartAxis->orientation()==Qt::Vertical) |
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278 | 279 | { |
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279 | 280 | min = domain->minY(); |
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280 | 281 | max = domain->maxY(); |
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281 | 282 | } |
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282 | 283 | |
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283 | 284 | if (!qFuzzyIsNull(m_min - min) || !qFuzzyIsNull(m_max - max)) |
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284 | 285 | { |
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285 | 286 | m_min = min; |
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286 | 287 | m_max = max; |
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287 | 288 | |
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288 | 289 | if (!isEmpty()) { |
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289 | 290 | QVector<qreal> layout = calculateLayout(); |
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290 | 291 | updateLayout(layout); |
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291 | 292 | } |
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292 | 293 | } |
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293 | 294 | } |
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294 | 295 | |
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295 | 296 | void ChartAxis::handleAxisUpdated() |
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296 | 297 | { |
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297 | 298 | if(isEmpty()) return; |
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298 | 299 | |
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299 | 300 | |
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300 | 301 | bool visible = m_chartAxis->isVisible(); |
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301 | 302 | |
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302 | 303 | setArrowVisibility(visible && m_chartAxis->isLineVisible()); |
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303 | 304 | setGridVisibility(visible && m_chartAxis->isGridLineVisible()); |
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304 | 305 | setLabelsVisibility(visible && m_chartAxis->labelsVisible()); |
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305 | 306 | setShadesVisibility(visible && m_chartAxis->shadesVisible()); |
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306 | 307 | setLabelsAngle(m_chartAxis->labelsAngle()); |
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307 | 308 | setArrowPen(m_chartAxis->linePen()); |
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308 | 309 | setLabelsPen(m_chartAxis->labelsPen()); |
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309 | 310 | setLabelsBrush(m_chartAxis->labelsBrush()); |
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310 | 311 | setLabelsFont(m_chartAxis->labelsFont()); |
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311 | 312 | setGridPen(m_chartAxis->gridLinePen()); |
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312 | 313 | setShadesPen(m_chartAxis->shadesPen()); |
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313 | 314 | setShadesBrush(m_chartAxis->shadesBrush()); |
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314 | 315 | |
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315 | 316 | } |
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316 | 317 | |
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317 | 318 | void ChartAxis::hide() |
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318 | 319 | { |
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319 | 320 | setArrowVisibility(false); |
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320 | 321 | setGridVisibility(false); |
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321 | 322 | setLabelsVisibility(false); |
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322 | 323 | setShadesVisibility(false); |
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323 | 324 | } |
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324 | 325 | |
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325 | 326 | void ChartAxis::handleGeometryChanged(const QRectF &rect) |
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326 | 327 | { |
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327 | 328 | if(m_rect != rect) |
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328 | 329 | { |
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329 | 330 | m_rect = rect; |
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330 | 331 | if (isEmpty()) return; |
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331 | 332 | QVector<qreal> layout = calculateLayout(); |
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332 | 333 | updateLayout(layout); |
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333 | 334 | } |
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334 | 335 | } |
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335 | 336 | |
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336 | 337 | |
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337 | 338 | qreal ChartAxis::minimumWidth() |
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338 | 339 | { |
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339 | 340 | if(m_minWidth == 0) updateGeometry(); |
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340 | 341 | return m_minWidth; |
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341 | 342 | } |
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342 | 343 | |
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343 | 344 | qreal ChartAxis::minimumHeight() |
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344 | 345 | { |
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345 | 346 | if(m_minHeight == 0) updateGeometry(); |
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346 | 347 | return m_minHeight; |
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347 | 348 | } |
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348 | 349 | |
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349 | 350 | |
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350 | 351 | void ChartAxis::axisSelected() |
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351 | 352 | { |
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352 | 353 | qDebug()<<"TODO: axis clicked"; |
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353 | 354 | } |
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354 | 355 | |
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355 | 356 | |
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356 | 357 | void ChartAxis::createNumberLabels(QStringList &labels,qreal min, qreal max, int ticks) const |
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357 | 358 | { |
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358 | 359 | Q_ASSERT(max>min); |
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359 | 360 | Q_ASSERT(ticks>1); |
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360 | 361 | |
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361 | 362 | int n = qMax(int(-qFloor(log10((max-min)/(ticks-1)))),0); |
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362 | 363 | n++; |
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364 | ||
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365 | QValueAxis *axis = qobject_cast<QValueAxis *>(m_chartAxis); | |
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366 | QByteArray array = axis->labelFormat().toAscii(); | |
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363 | 367 | for (int i=0; i< ticks; i++) { |
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364 | 368 | qreal value = min + (i * (max - min)/ (ticks-1)); |
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365 | labels << QString::number(value,'f',n); | |
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369 | QString label; | |
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370 | labels << label.sprintf(array, value);; | |
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366 | 371 | } |
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367 | 372 | } |
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368 | 373 | |
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369 | 374 | #include "moc_chartaxis_p.cpp" |
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370 | 375 | |
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371 | 376 | QTCOMMERCIALCHART_END_NAMESPACE |
@@ -1,384 +1,397 | |||
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1 | 1 | /**************************************************************************** |
|
2 | 2 | ** |
|
3 | 3 | ** Copyright (C) 2012 Digia Plc |
|
4 | 4 | ** All rights reserved. |
|
5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
|
6 | 6 | ** |
|
7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
|
8 | 8 | ** |
|
9 | 9 | ** $QT_BEGIN_LICENSE$ |
|
10 | 10 | ** Licensees holding valid Qt Commercial licenses may use this file in |
|
11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
|
12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
|
13 | 13 | ** a written agreement between you and Digia. |
|
14 | 14 | ** |
|
15 | 15 | ** If you have questions regarding the use of this file, please use |
|
16 | 16 | ** contact form at http://qt.digia.com |
|
17 | 17 | ** $QT_END_LICENSE$ |
|
18 | 18 | ** |
|
19 | 19 | ****************************************************************************/ |
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20 | 20 | |
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21 | 21 | #include "qvalueaxis.h" |
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22 | 22 | #include "qvalueaxis_p.h" |
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23 | 23 | #include "chartvalueaxisx_p.h" |
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24 | 24 | #include "chartvalueaxisy_p.h" |
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25 | 25 | #include "domain_p.h" |
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26 | 26 | #include "chartdataset_p.h" |
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27 | 27 | #include <qmath.h> |
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28 | 28 | |
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29 | 29 | |
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30 | 30 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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31 | 31 | /*! |
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32 | 32 | \class QValueAxis |
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33 | 33 | \brief The QValueAxis class is used for manipulating chart's axis. |
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34 | 34 | \mainclass |
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35 | 35 | |
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36 | 36 | ValueAxis can be setup to show axis line with tick marks, grid lines and shades. |
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37 | 37 | Values of axis are drawn to position of ticks |
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38 | 38 | */ |
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39 | 39 | |
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40 | 40 | /*! |
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41 | 41 | \qmlclass ValueAxis QValueAxis |
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42 | 42 | \brief The ValueAxis element is used for manipulating chart's axes |
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43 | 43 | |
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44 | 44 | ValueAxis can be setup to show axis line with tick marks, grid lines and shades. |
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45 | 45 | Values of axis are drawn to position of ticks |
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46 | 46 | |
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47 | 47 | To access Axes you can use ChartView API. For example: |
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48 | 48 | \code |
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49 | 49 | ChartView { |
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50 | 50 | ValueAxis { |
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51 | 51 | id: xAxis |
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52 | 52 | min: 0 |
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53 | 53 | max: 10 |
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54 | 54 | } |
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55 | 55 | // Add a few series... |
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56 | 56 | } |
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57 | 57 | \endcode |
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58 | 58 | */ |
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59 | 59 | |
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60 | 60 | /*! |
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61 | 61 | \property QValueAxis::min |
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62 | 62 | Defines the minimum value on the axis. |
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63 | 63 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. |
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64 | 64 | */ |
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65 | 65 | /*! |
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66 | 66 | \qmlproperty real ValueAxis::min |
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67 | 67 | Defines the minimum value on the axis. |
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68 | 68 | When setting this property the max is adjusted if necessary, to ensure that the range remains valid. |
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69 | 69 | */ |
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70 | 70 | |
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71 | 71 | /*! |
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72 | 72 | \property QValueAxis::max |
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73 | 73 | Defines the maximum value on the axis. |
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74 | 74 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. |
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75 | 75 | */ |
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76 | 76 | /*! |
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77 | 77 | \qmlproperty real ValueAxis::max |
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78 | 78 | Defines the maximum value on the axis. |
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79 | 79 | When setting this property the min is adjusted if necessary, to ensure that the range remains valid. |
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80 | 80 | */ |
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81 | 81 | |
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82 | 82 | /*! |
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83 | 83 | \fn void QValueAxis::minChanged(qreal min) |
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84 | 84 | Axis emits signal when \a min of axis has changed. |
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85 | 85 | */ |
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86 | 86 | /*! |
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87 | 87 | \qmlsignal ValueAxis::onMinChanged(real min) |
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88 | 88 | Axis emits signal when \a min of axis has changed. |
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89 | 89 | */ |
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90 | 90 | |
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91 | 91 | /*! |
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92 | 92 | \fn void QValueAxis::maxChanged(qreal max) |
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93 | 93 | Axis emits signal when \a max of axis has changed. |
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94 | 94 | */ |
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95 | 95 | /*! |
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96 | 96 | \qmlsignal ValueAxis::onMaxChanged(real max) |
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97 | 97 | Axis emits signal when \a max of axis has changed. |
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98 | 98 | */ |
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99 | 99 | |
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100 | 100 | /*! |
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101 | 101 | \fn void QValueAxis::rangeChanged(qreal min, qreal max) |
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102 | 102 | Axis emits signal when \a min or \a max of axis has changed. |
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103 | 103 | */ |
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104 | 104 | |
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105 | 105 | /*! |
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106 | 106 | \property QValueAxis::tickCount |
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107 | 107 | The number of tick marks for the axis. |
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108 | 108 | */ |
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109 | 109 | |
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110 | 110 | /*! |
|
111 | 111 | \qmlproperty int ValueAxis::tickCount |
|
112 | 112 | The number of tick marks for the axis. |
|
113 | 113 | */ |
|
114 | 114 | |
|
115 | 115 | /*! |
|
116 | 116 | \property QValueAxis::niceNumbersEnabled |
|
117 | 117 | Whether the nice numbers algorithm is enabled or not for the axis. |
|
118 | 118 | */ |
|
119 | 119 | |
|
120 | 120 | /*! |
|
121 | 121 | \qmlproperty bool ValueAxis::niceNumbersEnabled |
|
122 | 122 | Whether the nice numbers algorithm is enabled or not for the axis. |
|
123 | 123 | */ |
|
124 | 124 | |
|
125 | 125 | /*! |
|
126 | 126 | Constructs an axis object which is a child of \a parent. |
|
127 | 127 | */ |
|
128 | 128 | QValueAxis::QValueAxis(QObject *parent) : |
|
129 | 129 | QAbstractAxis(*new QValueAxisPrivate(this),parent) |
|
130 | 130 | { |
|
131 | 131 | |
|
132 | 132 | } |
|
133 | 133 | |
|
134 | 134 | /*! |
|
135 | 135 | \internal |
|
136 | 136 | */ |
|
137 | 137 | QValueAxis::QValueAxis(QValueAxisPrivate &d,QObject *parent) : QAbstractAxis(d,parent) |
|
138 | 138 | { |
|
139 | 139 | |
|
140 | 140 | } |
|
141 | 141 | |
|
142 | 142 | /*! |
|
143 | 143 | Destroys the object |
|
144 | 144 | */ |
|
145 | 145 | QValueAxis::~QValueAxis() |
|
146 | 146 | { |
|
147 | 147 | Q_D(QValueAxis); |
|
148 | 148 | if(d->m_dataset) { |
|
149 | 149 | d->m_dataset->removeAxis(this); |
|
150 | 150 | } |
|
151 | 151 | } |
|
152 | 152 | |
|
153 | 153 | void QValueAxis::setMin(qreal min) |
|
154 | 154 | { |
|
155 | 155 | Q_D(QValueAxis); |
|
156 | 156 | setRange(min, qMax(d->m_max, min)); |
|
157 | 157 | } |
|
158 | 158 | |
|
159 | 159 | qreal QValueAxis::min() const |
|
160 | 160 | { |
|
161 | 161 | Q_D(const QValueAxis); |
|
162 | 162 | return d->m_min; |
|
163 | 163 | } |
|
164 | 164 | |
|
165 | 165 | void QValueAxis::setMax(qreal max) |
|
166 | 166 | { |
|
167 | 167 | Q_D(QValueAxis); |
|
168 | 168 | setRange(qMin(d->m_min, max), max); |
|
169 | 169 | } |
|
170 | 170 | |
|
171 | 171 | qreal QValueAxis::max() const |
|
172 | 172 | { |
|
173 | 173 | Q_D(const QValueAxis); |
|
174 | 174 | return d->m_max; |
|
175 | 175 | } |
|
176 | 176 | |
|
177 | 177 | /*! |
|
178 | 178 | Sets range from \a min to \a max on the axis. |
|
179 | 179 | If min is greater than max then this function returns without making any changes. |
|
180 | 180 | */ |
|
181 | 181 | void QValueAxis::setRange(qreal min, qreal max) |
|
182 | 182 | { |
|
183 | 183 | Q_D(QValueAxis); |
|
184 | 184 | bool changed = false; |
|
185 | 185 | |
|
186 | 186 | if (min > max) return; |
|
187 | 187 | |
|
188 | 188 | if(d->m_niceNumbers) { |
|
189 | 189 | int ticks = d->m_tickCount; |
|
190 | 190 | d->looseNiceNumbers(min, max, ticks); |
|
191 | 191 | if(ticks!=d->m_tickCount) setTickCount(ticks); |
|
192 | 192 | } |
|
193 | 193 | |
|
194 | 194 | if (!qFuzzyIsNull(d->m_min - min)) { |
|
195 | 195 | d->m_min = min; |
|
196 | 196 | changed = true; |
|
197 | 197 | emit minChanged(min); |
|
198 | 198 | } |
|
199 | 199 | |
|
200 | 200 | if (!qFuzzyIsNull(d->m_max - max)) { |
|
201 | 201 | d->m_max = max; |
|
202 | 202 | changed = true; |
|
203 | 203 | emit maxChanged(max); |
|
204 | 204 | } |
|
205 | 205 | |
|
206 | 206 | if (changed) { |
|
207 | 207 | emit rangeChanged(min,max); |
|
208 | 208 | d->emitUpdated(); |
|
209 | 209 | } |
|
210 | 210 | } |
|
211 | 211 | |
|
212 | 212 | /*! |
|
213 | 213 | Sets \a count for ticks on the axis. |
|
214 | 214 | */ |
|
215 | 215 | void QValueAxis::setTickCount(int count) |
|
216 | 216 | { |
|
217 | 217 | Q_D(QValueAxis); |
|
218 | 218 | if (d->m_tickCount != count && count >=2) { |
|
219 | 219 | d->m_tickCount = count; |
|
220 | 220 | d->emitUpdated(); |
|
221 | 221 | } |
|
222 | 222 | } |
|
223 | 223 | |
|
224 | 224 | /*! |
|
225 | 225 | \fn int QValueAxis::tickCount() const |
|
226 | 226 | Return number of ticks on the axis |
|
227 | 227 | */ |
|
228 | 228 | int QValueAxis::tickCount() const |
|
229 | 229 | { |
|
230 | 230 | Q_D(const QValueAxis); |
|
231 | 231 | return d->m_tickCount; |
|
232 | 232 | } |
|
233 | 233 | |
|
234 | 234 | void QValueAxis::setNiceNumbersEnabled(bool enable) |
|
235 | 235 | { |
|
236 | 236 | Q_D(QValueAxis); |
|
237 | 237 | if (d->m_niceNumbers != enable){ |
|
238 | 238 | d->m_niceNumbers = enable; |
|
239 | 239 | if(enable && !qFuzzyIsNull(d->m_max - d->m_min)) { |
|
240 | 240 | setRange(d->m_min,d->m_max); |
|
241 | 241 | } |
|
242 | 242 | } |
|
243 | 243 | } |
|
244 | 244 | |
|
245 | 245 | bool QValueAxis::niceNumbersEnabled() const |
|
246 | 246 | { |
|
247 | 247 | Q_D(const QValueAxis); |
|
248 | 248 | return d->m_niceNumbers; |
|
249 | 249 | } |
|
250 | 250 | |
|
251 | void QValueAxis::setLabelFormat(const QString &format) | |
|
252 | { | |
|
253 | Q_D(QValueAxis); | |
|
254 | d->m_format = format; | |
|
255 | } | |
|
256 | ||
|
257 | QString QValueAxis::labelFormat() const | |
|
258 | { | |
|
259 | Q_D(const QValueAxis); | |
|
260 | return d->m_format; | |
|
261 | } | |
|
262 | ||
|
251 | 263 | /*! |
|
252 | 264 | Returns the type of the axis |
|
253 | 265 | */ |
|
254 | 266 | QAbstractAxis::AxisType QValueAxis::type() const |
|
255 | 267 | { |
|
256 | 268 | return AxisTypeValue; |
|
257 | 269 | } |
|
258 | 270 | |
|
259 | 271 | ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
|
260 | 272 | |
|
261 | 273 | QValueAxisPrivate::QValueAxisPrivate(QValueAxis* q): |
|
262 | 274 | QAbstractAxisPrivate(q), |
|
263 | 275 | m_min(0), |
|
264 | 276 | m_max(0), |
|
265 | 277 | m_tickCount(5), |
|
266 | m_niceNumbers(false) | |
|
278 | m_niceNumbers(false), | |
|
279 | m_format("%g") | |
|
267 | 280 | { |
|
268 | 281 | |
|
269 | 282 | } |
|
270 | 283 | |
|
271 | 284 | QValueAxisPrivate::~QValueAxisPrivate() |
|
272 | 285 | { |
|
273 | 286 | |
|
274 | 287 | } |
|
275 | 288 | |
|
276 | 289 | void QValueAxisPrivate::handleDomainUpdated() |
|
277 | 290 | { |
|
278 | 291 | Q_Q(QValueAxis); |
|
279 | 292 | Domain* domain = qobject_cast<Domain*>(sender()); |
|
280 | 293 | Q_ASSERT(domain); |
|
281 | 294 | |
|
282 | 295 | if(orientation()==Qt::Horizontal){ |
|
283 | 296 | q->setRange(domain->minX(),domain->maxX()); |
|
284 | 297 | }else if(orientation()==Qt::Vertical){ |
|
285 | 298 | q->setRange(domain->minY(),domain->maxY()); |
|
286 | 299 | } |
|
287 | 300 | } |
|
288 | 301 | |
|
289 | 302 | |
|
290 | 303 | void QValueAxisPrivate::setMin(const QVariant &min) |
|
291 | 304 | { |
|
292 | 305 | Q_Q(QValueAxis); |
|
293 | 306 | bool ok; |
|
294 | 307 | qreal value = min.toReal(&ok); |
|
295 | 308 | if(ok) q->setMin(value); |
|
296 | 309 | } |
|
297 | 310 | |
|
298 | 311 | void QValueAxisPrivate::setMax(const QVariant &max) |
|
299 | 312 | { |
|
300 | 313 | |
|
301 | 314 | Q_Q(QValueAxis); |
|
302 | 315 | bool ok; |
|
303 | 316 | qreal value = max.toReal(&ok); |
|
304 | 317 | if(ok) q->setMax(value); |
|
305 | 318 | } |
|
306 | 319 | |
|
307 | 320 | void QValueAxisPrivate::setRange(const QVariant &min, const QVariant &max) |
|
308 | 321 | { |
|
309 | 322 | Q_Q(QValueAxis); |
|
310 | 323 | bool ok1; |
|
311 | 324 | bool ok2; |
|
312 | 325 | qreal value1 = min.toReal(&ok1); |
|
313 | 326 | qreal value2 = max.toReal(&ok2); |
|
314 | 327 | if(ok1&&ok2) q->setRange(value1,value2); |
|
315 | 328 | } |
|
316 | 329 | |
|
317 | 330 | ChartAxis* QValueAxisPrivate::createGraphics(ChartPresenter* presenter) |
|
318 | 331 | { |
|
319 | 332 | Q_Q(QValueAxis); |
|
320 | 333 | if(m_orientation == Qt::Vertical){ |
|
321 | 334 | return new ChartValueAxisY(q,presenter); |
|
322 | 335 | }else{ |
|
323 | 336 | return new ChartValueAxisX(q,presenter); |
|
324 | 337 | } |
|
325 | 338 | |
|
326 | 339 | } |
|
327 | 340 | |
|
328 | 341 | void QValueAxisPrivate::intializeDomain(Domain* domain) |
|
329 | 342 | { |
|
330 | 343 | Q_Q(QValueAxis); |
|
331 | 344 | if(qFuzzyCompare(m_max,m_min)) { |
|
332 | 345 | if(m_orientation==Qt::Vertical){ |
|
333 | 346 | q->setRange(domain->minY(),domain->maxY()); |
|
334 | 347 | }else{ |
|
335 | 348 | q->setRange(domain->minX(), domain->maxX()); |
|
336 | 349 | } |
|
337 | 350 | } else { |
|
338 | 351 | if(m_orientation==Qt::Vertical){ |
|
339 | 352 | domain->setRangeY(m_min, m_max); |
|
340 | 353 | }else{ |
|
341 | 354 | domain->setRangeX(m_min, m_max); |
|
342 | 355 | } |
|
343 | 356 | } |
|
344 | 357 | } |
|
345 | 358 | |
|
346 | 359 | //algorithm defined by Paul S.Heckbert GraphicalGems I |
|
347 | 360 | |
|
348 | 361 | void QValueAxisPrivate::looseNiceNumbers(qreal &min, qreal &max, int &ticksCount) const |
|
349 | 362 | { |
|
350 | 363 | qreal range = niceNumber(max-min,true); //range with ceiling |
|
351 | 364 | qreal step = niceNumber(range/(ticksCount-1),false); |
|
352 | 365 | min = qFloor(min/step); |
|
353 | 366 | max = qCeil(max/step); |
|
354 | 367 | ticksCount = int(max-min) +1; |
|
355 | 368 | min*=step; |
|
356 | 369 | max*=step; |
|
357 | 370 | } |
|
358 | 371 | |
|
359 | 372 | //nice numbers can be expressed as form of 1*10^n, 2* 10^n or 5*10^n |
|
360 | 373 | |
|
361 | 374 | qreal QValueAxisPrivate::niceNumber(qreal x,bool ceiling) const |
|
362 | 375 | { |
|
363 | 376 | qreal z = qPow(10,qFloor(log10(x))); //find corresponding number of the form of 10^n than is smaller than x |
|
364 | 377 | qreal q = x/z;//q<10 && q>=1; |
|
365 | 378 | |
|
366 | 379 | if(ceiling) { |
|
367 | 380 | if(q <= 1.0) q=1; |
|
368 | 381 | else if(q <= 2.0) q=2; |
|
369 | 382 | else if(q <= 5.0) q=5; |
|
370 | 383 | else q=10; |
|
371 | 384 | } |
|
372 | 385 | else { |
|
373 | 386 | if(q < 1.5) q=1; |
|
374 | 387 | else if(q < 3.0) q=2; |
|
375 | 388 | else if(q < 7.0) q=5; |
|
376 | 389 | else q=10; |
|
377 | 390 | } |
|
378 | 391 | return q*z; |
|
379 | 392 | } |
|
380 | 393 | |
|
381 | 394 | #include "moc_qvalueaxis.cpp" |
|
382 | 395 | #include "moc_qvalueaxis_p.cpp" |
|
383 | 396 | |
|
384 | 397 | QTCOMMERCIALCHART_END_NAMESPACE |
@@ -1,74 +1,77 | |||
|
1 | 1 | /**************************************************************************** |
|
2 | 2 | ** |
|
3 | 3 | ** Copyright (C) 2012 Digia Plc |
|
4 | 4 | ** All rights reserved. |
|
5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
|
6 | 6 | ** |
|
7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
|
8 | 8 | ** |
|
9 | 9 | ** $QT_BEGIN_LICENSE$ |
|
10 | 10 | ** Licensees holding valid Qt Commercial licenses may use this file in |
|
11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
|
12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
|
13 | 13 | ** a written agreement between you and Digia. |
|
14 | 14 | ** |
|
15 | 15 | ** If you have questions regarding the use of this file, please use |
|
16 | 16 | ** contact form at http://qt.digia.com |
|
17 | 17 | ** $QT_END_LICENSE$ |
|
18 | 18 | ** |
|
19 | 19 | ****************************************************************************/ |
|
20 | 20 | |
|
21 | 21 | #ifndef QVALUESAXIS_H |
|
22 | 22 | #define QVALUESAXIS_H |
|
23 | 23 | |
|
24 | 24 | #include "qabstractaxis.h" |
|
25 | 25 | |
|
26 | 26 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
|
27 | 27 | |
|
28 | 28 | class QValueAxisPrivate; |
|
29 | 29 | |
|
30 | 30 | class QTCOMMERCIALCHART_EXPORT QValueAxis : public QAbstractAxis |
|
31 | 31 | { |
|
32 | 32 | Q_OBJECT |
|
33 | 33 | Q_PROPERTY(int tickCount READ tickCount WRITE setTickCount) |
|
34 | 34 | Q_PROPERTY(bool niceNumbersEnabled READ niceNumbersEnabled WRITE setNiceNumbersEnabled) |
|
35 | 35 | Q_PROPERTY(qreal min READ min WRITE setMin NOTIFY minChanged) |
|
36 | 36 | Q_PROPERTY(qreal max READ max WRITE setMax NOTIFY maxChanged) |
|
37 | 37 | |
|
38 | 38 | public: |
|
39 | 39 | explicit QValueAxis(QObject *parent = 0); |
|
40 | 40 | ~QValueAxis(); |
|
41 | 41 | |
|
42 | 42 | protected: |
|
43 | 43 | QValueAxis(QValueAxisPrivate &d,QObject *parent = 0); |
|
44 | 44 | |
|
45 | 45 | public: |
|
46 | 46 | AxisType type() const; |
|
47 | 47 | |
|
48 | 48 | //range handling |
|
49 | 49 | void setMin(qreal min); |
|
50 | 50 | qreal min() const; |
|
51 | 51 | void setMax(qreal max); |
|
52 | 52 | qreal max() const; |
|
53 | 53 | void setRange(qreal min, qreal max); |
|
54 | 54 | |
|
55 | 55 | //ticks handling |
|
56 | 56 | void setTickCount(int count); |
|
57 | 57 | int tickCount() const; |
|
58 | 58 | |
|
59 | void setLabelFormat(const QString &format); | |
|
60 | QString labelFormat() const; | |
|
61 | ||
|
59 | 62 | void setNiceNumbersEnabled(bool enable = true); |
|
60 | 63 | bool niceNumbersEnabled() const; |
|
61 | 64 | |
|
62 | 65 | Q_SIGNALS: |
|
63 | 66 | void minChanged(qreal min); |
|
64 | 67 | void maxChanged(qreal max); |
|
65 | 68 | void rangeChanged(qreal min, qreal max); |
|
66 | 69 | |
|
67 | 70 | private: |
|
68 | 71 | Q_DECLARE_PRIVATE(QValueAxis) |
|
69 | 72 | Q_DISABLE_COPY(QValueAxis) |
|
70 | 73 | }; |
|
71 | 74 | |
|
72 | 75 | QTCOMMERCIALCHART_END_NAMESPACE |
|
73 | 76 | |
|
74 | 77 | #endif // QVALUESAXIS_H |
@@ -1,72 +1,73 | |||
|
1 | 1 | /**************************************************************************** |
|
2 | 2 | ** |
|
3 | 3 | ** Copyright (C) 2012 Digia Plc |
|
4 | 4 | ** All rights reserved. |
|
5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
|
6 | 6 | ** |
|
7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
|
8 | 8 | ** |
|
9 | 9 | ** $QT_BEGIN_LICENSE$ |
|
10 | 10 | ** Licensees holding valid Qt Commercial licenses may use this file in |
|
11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
|
12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
|
13 | 13 | ** a written agreement between you and Digia. |
|
14 | 14 | ** |
|
15 | 15 | ** If you have questions regarding the use of this file, please use |
|
16 | 16 | ** contact form at http://qt.digia.com |
|
17 | 17 | ** $QT_END_LICENSE$ |
|
18 | 18 | ** |
|
19 | 19 | ****************************************************************************/ |
|
20 | 20 | |
|
21 | 21 | // W A R N I N G |
|
22 | 22 | // ------------- |
|
23 | 23 | // |
|
24 | 24 | // This file is not part of the QtCommercial Chart API. It exists purely as an |
|
25 | 25 | // implementation detail. This header file may change from version to |
|
26 | 26 | // version without notice, or even be removed. |
|
27 | 27 | // |
|
28 | 28 | // We mean it. |
|
29 | 29 | |
|
30 | 30 | #ifndef QVALUESAXIS_P_H |
|
31 | 31 | #define QVALUESAXIS_P_H |
|
32 | 32 | |
|
33 | 33 | #include "qvalueaxis.h" |
|
34 | 34 | #include "qabstractaxis_p.h" |
|
35 | 35 | |
|
36 | 36 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
|
37 | 37 | |
|
38 | 38 | class QValueAxisPrivate : public QAbstractAxisPrivate |
|
39 | 39 | { |
|
40 | 40 | Q_OBJECT |
|
41 | 41 | public: |
|
42 | 42 | QValueAxisPrivate(QValueAxis *q); |
|
43 | 43 | ~QValueAxisPrivate(); |
|
44 | 44 | |
|
45 | 45 | public: |
|
46 | 46 | ChartAxis* createGraphics(ChartPresenter* presenter); |
|
47 | 47 | void intializeDomain(Domain* domain); |
|
48 | 48 | void handleDomainUpdated(); |
|
49 | 49 | qreal min(){ return m_min; }; |
|
50 | 50 | qreal max(){ return m_max; }; |
|
51 | 51 | int count() const { return m_tickCount;} |
|
52 | 52 | |
|
53 | 53 | protected: |
|
54 | 54 | void setMin(const QVariant &min); |
|
55 | 55 | void setMax(const QVariant &max); |
|
56 | 56 | void setRange(const QVariant &min, const QVariant &max); |
|
57 | 57 | |
|
58 | 58 | private: |
|
59 | 59 | void looseNiceNumbers(qreal &min, qreal &max, int &ticksCount) const; |
|
60 | 60 | qreal niceNumber(qreal x,bool ceiling) const; |
|
61 | 61 | |
|
62 | 62 | private: |
|
63 | 63 | qreal m_min; |
|
64 | 64 | qreal m_max; |
|
65 | 65 | int m_tickCount; |
|
66 | 66 | bool m_niceNumbers; |
|
67 | QString m_format; | |
|
67 | 68 | Q_DECLARE_PUBLIC(QValueAxis) |
|
68 | 69 | }; |
|
69 | 70 | |
|
70 | 71 | QTCOMMERCIALCHART_END_NAMESPACE |
|
71 | 72 | |
|
72 | 73 | #endif // QVALUESAXIS_P_H |
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