@@ -1,441 +1,442 | |||
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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 "axisitem_p.h" |
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22 | 22 | #include "qchartaxis.h" |
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23 | 23 | #include "chartpresenter_p.h" |
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24 | 24 | #include "chartanimator_p.h" |
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25 | 25 | #include <QPainter> |
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26 | 26 | #include <QDebug> |
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27 | 27 | #include <cmath> |
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28 | 28 | |
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29 | 29 | static int label_padding = 5; |
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30 | 30 | |
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31 | 31 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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32 | 32 | |
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33 | 33 | Axis::Axis(QChartAxis *axis,ChartPresenter *presenter,AxisType type) : Chart(presenter), |
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34 | 34 | m_chartAxis(axis), |
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35 | 35 | m_type(type), |
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36 | 36 | m_labelsAngle(0), |
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37 | 37 | m_grid(new QGraphicsItemGroup(presenter->rootItem())), |
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38 | 38 | m_shades(new QGraphicsItemGroup(presenter->rootItem())), |
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39 | 39 | m_labels(new QGraphicsItemGroup(presenter->rootItem())), |
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40 | 40 | m_axis(new QGraphicsItemGroup(presenter->rootItem())), |
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41 | 41 | m_min(0), |
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42 | 42 | m_max(0), |
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43 | 43 | m_ticksCount(0) |
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44 | 44 | { |
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45 | 45 | //initial initialization |
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46 | 46 | m_axis->setZValue(ChartPresenter::AxisZValue); |
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47 | 47 | m_axis->setHandlesChildEvents(false); |
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48 | 48 | |
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49 | 49 | m_shades->setZValue(ChartPresenter::ShadesZValue); |
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50 | 50 | m_grid->setZValue(ChartPresenter::GridZValue); |
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51 | 51 | |
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52 | 52 | connect(m_chartAxis,SIGNAL(updated()),this,SLOT(handleAxisUpdated())); |
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53 | 53 | connect(m_chartAxis->categories(),SIGNAL(updated()),this,SLOT(handleAxisCategoriesUpdated())); |
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54 | 54 | |
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55 | 55 | handleAxisUpdated(); |
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56 | 56 | } |
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57 | 57 | |
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58 | 58 | Axis::~Axis() |
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59 | 59 | { |
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60 | 60 | } |
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61 | 61 | |
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62 | 62 | void Axis::createItems(int count) |
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63 | 63 | { |
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64 | 64 | |
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65 | 65 | if (m_axis->children().size() == 0) |
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66 | 66 | m_axis->addToGroup(new AxisItem(this)); |
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67 | 67 | for (int i = 0; i < count; ++i) { |
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68 | 68 | m_grid->addToGroup(new QGraphicsLineItem()); |
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69 | 69 | m_labels->addToGroup(new QGraphicsSimpleTextItem()); |
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70 | 70 | m_axis->addToGroup(new QGraphicsLineItem()); |
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71 | 71 | if ((m_grid->childItems().size())%2 && m_grid->childItems().size()>2) m_shades->addToGroup(new QGraphicsRectItem()); |
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72 | 72 | } |
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73 | 73 | } |
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74 | 74 | |
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75 | 75 | void Axis::deleteItems(int count) |
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76 | 76 | { |
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77 | 77 | QList<QGraphicsItem *> lines = m_grid->childItems(); |
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78 | 78 | QList<QGraphicsItem *> labels = m_labels->childItems(); |
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79 | 79 | QList<QGraphicsItem *> shades = m_shades->childItems(); |
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80 | 80 | QList<QGraphicsItem *> axis = m_axis->childItems(); |
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81 | 81 | |
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82 | 82 | for (int i = 0; i < count; ++i) { |
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83 | 83 | if (lines.size()%2 && lines.size() > 1) delete(shades.takeLast()); |
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84 | 84 | delete(lines.takeLast()); |
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85 | 85 | delete(labels.takeLast()); |
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86 | 86 | delete(axis.takeLast()); |
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87 | 87 | } |
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88 | 88 | } |
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89 | 89 | |
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90 | 90 | void Axis::updateLayout(QVector<qreal> &layout) |
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91 | 91 | { |
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92 | 92 | if (animator()) { |
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93 | 93 | animator()->updateLayout(this,layout); |
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94 | 94 | } else { |
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95 | 95 | setLayout(layout); |
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96 | 96 | } |
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97 | 97 | } |
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98 | 98 | |
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99 | 99 | bool Axis::createLabels(QStringList &labels,qreal min, qreal max,int ticks) const |
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100 | 100 | { |
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101 | 101 | Q_ASSERT(max>=min); |
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102 | 102 | Q_ASSERT(ticks>1); |
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103 | 103 | |
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104 | 104 | QChartAxisCategories* categories = m_chartAxis->categories(); |
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105 | 105 | |
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106 | 106 | bool category = categories->count()>0; |
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107 | 107 | |
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108 | 108 | if (!category) { |
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109 | 109 | int n = qMax(int(-floor(log10((max-min)/(ticks-1)))),0); |
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110 | n++; | |
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110 | 111 | for (int i=0; i< ticks; i++) { |
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111 | 112 | qreal value = min + (i * (max - min)/ (ticks-1)); |
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112 | 113 | labels << QString::number(value,'f',n); |
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113 | 114 | } |
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114 | 115 | } else { |
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115 | 116 | QList<qreal> values = categories->values(); |
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116 | 117 | for (int i=0; i< ticks; i++) { |
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117 | 118 | qreal value = (min + (i * (max - min)/ (ticks-1))); |
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118 | 119 | int j=0; |
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119 | 120 | for (; j<values.count(); j++) { |
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120 | 121 | if (values.at(j) > value) break; |
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121 | 122 | } |
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122 | 123 | if (j!=0) value=values.at(j-1); |
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123 | 124 | |
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124 | 125 | QString label = categories->label(value); |
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125 | 126 | labels << label; |
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126 | 127 | } |
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127 | 128 | } |
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128 | 129 | |
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129 | 130 | return category; |
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130 | 131 | } |
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131 | 132 | |
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132 | 133 | void Axis::setAxisOpacity(qreal opacity) |
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133 | 134 | { |
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134 | 135 | m_axis->setOpacity(opacity); |
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135 | 136 | } |
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136 | 137 | |
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137 | 138 | qreal Axis::axisOpacity() const |
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138 | 139 | { |
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139 | 140 | return m_axis->opacity(); |
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140 | 141 | } |
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141 | 142 | |
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142 | 143 | void Axis::setGridOpacity(qreal opacity) |
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143 | 144 | { |
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144 | 145 | m_grid->setOpacity(opacity); |
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145 | 146 | } |
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146 | 147 | |
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147 | 148 | qreal Axis::gridOpacity() const |
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148 | 149 | { |
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149 | 150 | return m_grid->opacity(); |
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150 | 151 | } |
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151 | 152 | |
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152 | 153 | void Axis::setLabelsOpacity(qreal opacity) |
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153 | 154 | { |
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154 | 155 | m_labels->setOpacity(opacity); |
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155 | 156 | } |
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156 | 157 | |
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157 | 158 | qreal Axis::labelsOpacity() const |
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158 | 159 | { |
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159 | 160 | return m_labels->opacity(); |
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160 | 161 | } |
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161 | 162 | |
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162 | 163 | void Axis::setShadesOpacity(qreal opacity) |
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163 | 164 | { |
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164 | 165 | m_shades->setOpacity(opacity); |
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165 | 166 | } |
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166 | 167 | |
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167 | 168 | qreal Axis::shadesOpacity() const |
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168 | 169 | { |
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169 | 170 | return m_shades->opacity(); |
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170 | 171 | } |
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171 | 172 | |
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172 | 173 | void Axis::setLabelsAngle(int angle) |
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173 | 174 | { |
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174 | 175 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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175 | 176 | item->setRotation(angle); |
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176 | 177 | } |
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177 | 178 | |
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178 | 179 | m_labelsAngle=angle; |
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179 | 180 | } |
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180 | 181 | |
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181 | 182 | void Axis::setLabelsPen(const QPen &pen) |
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182 | 183 | { |
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183 | 184 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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184 | 185 | static_cast<QGraphicsSimpleTextItem*>(item)->setPen(pen); |
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185 | 186 | } |
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186 | 187 | } |
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187 | 188 | |
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188 | 189 | void Axis::setLabelsBrush(const QBrush &brush) |
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189 | 190 | { |
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190 | 191 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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191 | 192 | static_cast<QGraphicsSimpleTextItem*>(item)->setBrush(brush); |
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192 | 193 | } |
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193 | 194 | } |
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194 | 195 | |
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195 | 196 | void Axis::setLabelsFont(const QFont &font) |
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196 | 197 | { |
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197 | 198 | foreach(QGraphicsItem* item , m_labels->childItems()) { |
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198 | 199 | static_cast<QGraphicsSimpleTextItem*>(item)->setFont(font); |
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199 | 200 | } |
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200 | 201 | } |
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201 | 202 | |
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202 | 203 | void Axis::setShadesBrush(const QBrush &brush) |
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203 | 204 | { |
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204 | 205 | foreach(QGraphicsItem* item , m_shades->childItems()) { |
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205 | 206 | static_cast<QGraphicsRectItem*>(item)->setBrush(brush); |
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206 | 207 | } |
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207 | 208 | } |
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208 | 209 | |
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209 | 210 | void Axis::setShadesPen(const QPen &pen) |
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210 | 211 | { |
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211 | 212 | foreach(QGraphicsItem* item , m_shades->childItems()) { |
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212 | 213 | static_cast<QGraphicsRectItem*>(item)->setPen(pen); |
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213 | 214 | } |
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214 | 215 | } |
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215 | 216 | |
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216 | 217 | void Axis::setAxisPen(const QPen &pen) |
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217 | 218 | { |
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218 | 219 | foreach(QGraphicsItem* item , m_axis->childItems()) { |
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219 | 220 | static_cast<QGraphicsLineItem*>(item)->setPen(pen); |
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220 | 221 | } |
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221 | 222 | } |
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222 | 223 | |
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223 | 224 | void Axis::setGridPen(const QPen &pen) |
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224 | 225 | { |
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225 | 226 | foreach(QGraphicsItem* item , m_grid->childItems()) { |
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226 | 227 | static_cast<QGraphicsLineItem*>(item)->setPen(pen); |
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227 | 228 | } |
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228 | 229 | } |
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229 | 230 | |
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230 | 231 | QVector<qreal> Axis::calculateLayout() const |
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231 | 232 | { |
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232 | 233 | Q_ASSERT(m_ticksCount>=2); |
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233 | 234 | |
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234 | 235 | QVector<qreal> points; |
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235 | 236 | points.resize(m_ticksCount); |
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236 | 237 | |
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237 | 238 | switch (m_type) |
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238 | 239 | { |
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239 | 240 | case X_AXIS: |
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240 | 241 | { |
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241 | 242 | const qreal deltaX = m_rect.width()/(m_ticksCount-1); |
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242 | 243 | for (int i = 0; i < m_ticksCount; ++i) { |
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243 | 244 | int x = i * deltaX + m_rect.left(); |
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244 | 245 | points[i] = x; |
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245 | 246 | } |
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246 | 247 | } |
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247 | 248 | break; |
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248 | 249 | case Y_AXIS: |
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249 | 250 | { |
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250 | 251 | const qreal deltaY = m_rect.height()/(m_ticksCount-1); |
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251 | 252 | for (int i = 0; i < m_ticksCount; ++i) { |
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252 | 253 | int y = i * -deltaY + m_rect.bottom(); |
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253 | 254 | points[i] = y; |
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254 | 255 | } |
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255 | 256 | } |
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256 | 257 | break; |
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257 | 258 | } |
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258 | 259 | return points; |
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259 | 260 | } |
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260 | 261 | |
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261 | 262 | void Axis::setLayout(QVector<qreal> &layout) |
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262 | 263 | { |
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263 | 264 | int diff = m_layoutVector.size() - layout.size(); |
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264 | 265 | |
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265 | 266 | if (diff>0) { |
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266 | 267 | deleteItems(diff); |
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267 | 268 | } else if (diff<0) { |
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268 | 269 | createItems(-diff); |
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269 | 270 | } |
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270 | 271 | |
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271 | 272 | if( diff!=0) handleAxisUpdated(); |
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272 | 273 | |
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273 | 274 | QStringList ticksList; |
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274 | 275 | |
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275 | 276 | bool categories = createLabels(ticksList,m_min,m_max,layout.size()); |
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276 | 277 | |
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277 | 278 | QList<QGraphicsItem *> lines = m_grid->childItems(); |
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278 | 279 | QList<QGraphicsItem *> labels = m_labels->childItems(); |
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279 | 280 | QList<QGraphicsItem *> shades = m_shades->childItems(); |
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280 | 281 | QList<QGraphicsItem *> axis = m_axis->childItems(); |
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281 | 282 | |
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282 | 283 | Q_ASSERT(labels.size() == ticksList.size()); |
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283 | 284 | Q_ASSERT(layout.size() == ticksList.size()); |
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284 | 285 | |
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285 | 286 | switch (m_type) |
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286 | 287 | { |
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287 | 288 | case X_AXIS: |
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288 | 289 | { |
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289 | 290 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); |
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290 | 291 | lineItem->setLine(m_rect.left(), m_rect.bottom(), m_rect.right(), m_rect.bottom()); |
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291 | 292 | |
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292 | 293 | for (int i = 0; i < layout.size(); ++i) { |
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293 | 294 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); |
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294 | 295 | lineItem->setLine(layout[i], m_rect.top(), layout[i], m_rect.bottom()); |
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295 | 296 | QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); |
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296 | 297 | if (!categories || i<1) { |
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297 | 298 | labelItem->setText(ticksList.at(i)); |
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298 | 299 | QPointF center = labelItem->boundingRect().center(); |
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299 | 300 | labelItem->setTransformOriginPoint(center.x(), center.y()); |
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300 | 301 | labelItem->setPos(layout[i] - center.x(), m_rect.bottom() + label_padding); |
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301 | 302 | } else { |
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302 | 303 | labelItem->setText(ticksList.at(i)); |
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303 | 304 | QPointF center = labelItem->boundingRect().center(); |
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304 | 305 | labelItem->setTransformOriginPoint(center.x(), center.y()); |
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305 | 306 | labelItem->setPos(layout[i] - (layout[i] - layout[i-1])/2 - center.x(), m_rect.bottom() + label_padding); |
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306 | 307 | } |
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307 | 308 | |
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308 | 309 | if ((i+1)%2 && i>1) { |
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309 | 310 | QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1)); |
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310 | 311 | rectItem->setRect(layout[i-1],m_rect.top(),layout[i]-layout[i-1],m_rect.height()); |
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311 | 312 | } |
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312 | 313 | lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); |
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313 | 314 | lineItem->setLine(layout[i],m_rect.bottom(),layout[i],m_rect.bottom()+5); |
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314 | 315 | } |
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315 | 316 | } |
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316 | 317 | break; |
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317 | 318 | |
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318 | 319 | case Y_AXIS: |
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319 | 320 | { |
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320 | 321 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); |
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321 | 322 | lineItem->setLine(m_rect.left() , m_rect.top(), m_rect.left(), m_rect.bottom()); |
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322 | 323 | |
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323 | 324 | for (int i = 0; i < layout.size(); ++i) { |
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324 | 325 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); |
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325 | 326 | lineItem->setLine(m_rect.left() , layout[i], m_rect.right(), layout[i]); |
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326 | 327 | QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); |
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327 | 328 | |
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328 | 329 | if (!categories || i<1) { |
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329 | 330 | labelItem->setText(ticksList.at(i)); |
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330 | 331 | QPointF center = labelItem->boundingRect().center(); |
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331 | 332 | labelItem->setTransformOriginPoint(center.x(), center.y()); |
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332 | 333 | labelItem->setPos(m_rect.left() - labelItem->boundingRect().width() - label_padding , layout[i]-center.y()); |
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333 | 334 | } else { |
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334 | 335 | labelItem->setText(ticksList.at(i)); |
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335 | 336 | QPointF center = labelItem->boundingRect().center(); |
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336 | 337 | labelItem->setTransformOriginPoint(center.x(), center.y()); |
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337 | 338 | labelItem->setPos(m_rect.left() - labelItem->boundingRect().width() - label_padding , layout[i] - (layout[i] - layout[i-1])/2 -center.y()); |
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338 | 339 | } |
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339 | 340 | |
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340 | 341 | if ((i+1)%2 && i>1) { |
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341 | 342 | QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1)); |
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342 | 343 | rectItem->setRect(m_rect.left(),layout[i],m_rect.width(),layout[i-1]-layout[i]); |
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343 | 344 | } |
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344 | 345 | lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); |
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345 | 346 | lineItem->setLine(m_rect.left()-5,layout[i],m_rect.left(),layout[i]); |
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346 | 347 | } |
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347 | 348 | } |
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348 | 349 | break; |
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349 | 350 | default: |
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350 | 351 | qDebug()<<"Unknown axis type"; |
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351 | 352 | break; |
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352 | 353 | } |
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353 | 354 | |
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354 | 355 | m_layoutVector=layout; |
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355 | 356 | } |
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356 | 357 | |
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357 | 358 | bool Axis::isEmpty() |
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358 | 359 | { |
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359 | 360 | return m_rect.isEmpty() || qFuzzyIsNull(m_min - m_max) || m_ticksCount==0; |
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360 | 361 | } |
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361 | 362 | |
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362 | 363 | //handlers |
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363 | 364 | |
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364 | 365 | void Axis::handleAxisCategoriesUpdated() |
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365 | 366 | { |
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366 | 367 | if (isEmpty()) return; |
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367 | 368 | updateLayout(m_layoutVector); |
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368 | 369 | } |
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369 | 370 | |
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370 | 371 | void Axis::handleAxisUpdated() |
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371 | 372 | { |
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372 | 373 | |
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373 | 374 | if (isEmpty()) return; |
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374 | 375 | |
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375 | 376 | if (m_chartAxis->isAxisVisible()) { |
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376 | 377 | setAxisOpacity(100); |
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377 | 378 | } else { |
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378 | 379 | setAxisOpacity(0); |
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379 | 380 | } |
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380 | 381 | |
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381 | 382 | if (m_chartAxis->isGridLineVisible()) { |
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382 | 383 | setGridOpacity(100); |
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383 | 384 | } else { |
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384 | 385 | setGridOpacity(0); |
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385 | 386 | } |
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386 | 387 | |
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387 | 388 | if (m_chartAxis->labelsVisible()) { |
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388 | 389 | setLabelsOpacity(100); |
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389 | 390 | } else { |
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390 | 391 | setLabelsOpacity(0); |
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391 | 392 | } |
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392 | 393 | |
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393 | 394 | if (m_chartAxis->shadesVisible()) { |
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394 | 395 | setShadesOpacity(m_chartAxis->shadesOpacity()); |
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395 | 396 | } else { |
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396 | 397 | setShadesOpacity(0); |
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397 | 398 | } |
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398 | 399 | |
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399 | 400 | setLabelsAngle(m_chartAxis->labelsAngle()); |
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400 | 401 | setAxisPen(m_chartAxis->axisPen()); |
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401 | 402 | setLabelsPen(m_chartAxis->labelsPen()); |
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402 | 403 | setLabelsBrush(m_chartAxis->labelsBrush()); |
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403 | 404 | setLabelsFont(m_chartAxis->labelsFont()); |
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404 | 405 | setGridPen(m_chartAxis->gridLinePen()); |
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405 | 406 | setShadesPen(m_chartAxis->shadesPen()); |
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406 | 407 | setShadesBrush(m_chartAxis->shadesBrush()); |
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407 | 408 | |
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408 | 409 | } |
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409 | 410 | |
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410 | 411 | void Axis::handleRangeChanged(qreal min, qreal max,int tickCount) |
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411 | 412 | { |
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412 | 413 | if (qFuzzyIsNull(min - max) || tickCount < 2) |
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413 | 414 | return; |
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414 | 415 | |
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415 | 416 | m_min = min; |
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416 | 417 | m_max = max; |
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417 | 418 | m_ticksCount= tickCount; |
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418 | 419 | |
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419 | 420 | if (isEmpty()) return; |
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420 | 421 | QVector<qreal> layout = calculateLayout(); |
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421 | 422 | updateLayout(layout); |
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422 | 423 | |
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423 | 424 | } |
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424 | 425 | |
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425 | 426 | void Axis::handleGeometryChanged(const QRectF &rect) |
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426 | 427 | { |
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427 | 428 | m_rect = rect; |
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428 | 429 | if (isEmpty()) return; |
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429 | 430 | QVector<qreal> layout = calculateLayout(); |
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430 | 431 | updateLayout(layout); |
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431 | 432 | } |
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432 | 433 | |
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433 | 434 | void Axis::axisSelected() |
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434 | 435 | { |
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435 | 436 | qDebug()<<"TODO axis clicked"; |
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436 | 437 | } |
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437 | 438 | |
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438 | 439 | //TODO "nice numbers algorithm" |
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439 | 440 | #include "moc_axisitem_p.cpp" |
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440 | 441 | |
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441 | 442 | QTCOMMERCIALCHART_END_NAMESPACE |
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