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1 | 1 | /**************************************************************************** |
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2 | 2 | ** |
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3 | 3 | ** Copyright (C) 2014 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 Enterprise 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 Enterprise licenses may use this file in |
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11 | 11 | ** accordance with the Qt Enterprise 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 <private/chartaxiselement_p.h> |
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22 | 22 | #include <private/qabstractaxis_p.h> |
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23 | 23 | #include <private/chartpresenter_p.h> |
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24 | 24 | #include <private/abstractchartlayout_p.h> |
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25 | 25 | #include <QtCore/QtMath> |
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26 | 26 | #include <QtCore/QDateTime> |
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27 | 27 | #include <QtGui/QTextDocument> |
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28 | 28 | |
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29 | 29 | QT_CHARTS_BEGIN_NAMESPACE |
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30 | 30 | |
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31 | static const char *labelFormatMatchString = "%[\\-\\+#\\s\\d\\.lhjztL]*([dicuoxfegXFEG])"; | |
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31 | static const char *labelFormatMatchString = "%[\\-\\+#\\s\\d\\.\\'lhjztL]*([dicuoxfegXFEG])"; | |
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32 | 32 | static const char *labelFormatMatchLocalizedString = "^([^%]*)%\\.(\\d+)([defgiEG])(.*)$"; |
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33 | 33 | static QRegExp *labelFormatMatcher = 0; |
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34 | 34 | static QRegExp *labelFormatMatcherLocalized = 0; |
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35 | 35 | class StaticLabelFormatMatcherDeleter |
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36 | 36 | { |
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37 | 37 | public: |
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38 | 38 | StaticLabelFormatMatcherDeleter() {} |
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39 | 39 | ~StaticLabelFormatMatcherDeleter() { |
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40 | 40 | delete labelFormatMatcher; |
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41 | 41 | delete labelFormatMatcherLocalized; |
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42 | 42 | } |
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43 | 43 | }; |
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44 | 44 | static StaticLabelFormatMatcherDeleter staticLabelFormatMatcherDeleter; |
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45 | 45 | |
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46 | 46 | ChartAxisElement::ChartAxisElement(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis) |
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47 | 47 | : ChartElement(item), |
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48 | 48 | m_axis(axis), |
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49 | 49 | m_animation(0), |
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50 | 50 | m_grid(new QGraphicsItemGroup(item)), |
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51 | 51 | m_arrow(new QGraphicsItemGroup(item)), |
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52 | 52 | m_shades(new QGraphicsItemGroup(item)), |
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53 | 53 | m_labels(new QGraphicsItemGroup(item)), |
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54 | 54 | m_title(new QGraphicsTextItem(item)), |
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55 | 55 | m_intervalAxis(intervalAxis) |
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56 | 56 | |
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57 | 57 | { |
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58 | 58 | //initial initialization |
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59 | 59 | m_arrow->setHandlesChildEvents(false); |
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60 | 60 | m_arrow->setZValue(ChartPresenter::AxisZValue); |
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61 | 61 | m_labels->setZValue(ChartPresenter::AxisZValue); |
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62 | 62 | m_shades->setZValue(ChartPresenter::ShadesZValue); |
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63 | 63 | m_grid->setZValue(ChartPresenter::GridZValue); |
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64 | 64 | m_title->setZValue(ChartPresenter::GridZValue); |
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65 | 65 | m_title->document()->setDocumentMargin(ChartPresenter::textMargin()); |
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66 | 66 | handleVisibleChanged(axis->isVisible()); |
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67 | 67 | connectSlots(); |
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68 | 68 | |
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69 | 69 | setFlag(QGraphicsItem::ItemHasNoContents, true); |
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70 | 70 | } |
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71 | 71 | |
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72 | 72 | ChartAxisElement::~ChartAxisElement() |
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73 | 73 | { |
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74 | 74 | } |
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75 | 75 | |
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76 | 76 | void ChartAxisElement::connectSlots() |
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77 | 77 | { |
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78 | 78 | QObject::connect(axis(), SIGNAL(visibleChanged(bool)), this, SLOT(handleVisibleChanged(bool))); |
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79 | 79 | QObject::connect(axis(), SIGNAL(lineVisibleChanged(bool)), this, SLOT(handleArrowVisibleChanged(bool))); |
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80 | 80 | QObject::connect(axis(), SIGNAL(gridVisibleChanged(bool)), this, SLOT(handleGridVisibleChanged(bool))); |
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81 | 81 | QObject::connect(axis(), SIGNAL(labelsVisibleChanged(bool)), this, SLOT(handleLabelsVisibleChanged(bool))); |
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82 | 82 | QObject::connect(axis(), SIGNAL(shadesVisibleChanged(bool)), this, SLOT(handleShadesVisibleChanged(bool))); |
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83 | 83 | QObject::connect(axis(), SIGNAL(labelsAngleChanged(int)), this, SLOT(handleLabelsAngleChanged(int))); |
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84 | 84 | QObject::connect(axis(), SIGNAL(linePenChanged(const QPen&)), this, SLOT(handleArrowPenChanged(const QPen&))); |
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85 | 85 | QObject::connect(axis(), SIGNAL(labelsPenChanged(const QPen&)), this, SLOT(handleLabelsPenChanged(const QPen&))); |
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86 | 86 | QObject::connect(axis(), SIGNAL(labelsBrushChanged(const QBrush&)), this, SLOT(handleLabelsBrushChanged(const QBrush&))); |
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87 | 87 | QObject::connect(axis(), SIGNAL(labelsFontChanged(const QFont&)), this, SLOT(handleLabelsFontChanged(const QFont&))); |
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88 | 88 | QObject::connect(axis(), SIGNAL(gridLinePenChanged(const QPen&)), this, SLOT(handleGridPenChanged(const QPen&))); |
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89 | 89 | QObject::connect(axis(), SIGNAL(shadesPenChanged(const QPen&)), this, SLOT(handleShadesPenChanged(const QPen&))); |
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90 | 90 | QObject::connect(axis(), SIGNAL(shadesBrushChanged(const QBrush&)), this, SLOT(handleShadesBrushChanged(const QBrush&))); |
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91 | 91 | QObject::connect(axis(), SIGNAL(titleTextChanged(const QString&)), this, SLOT(handleTitleTextChanged(const QString&))); |
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92 | 92 | QObject::connect(axis(), SIGNAL(titleFontChanged(const QFont&)), this, SLOT(handleTitleFontChanged(const QFont&))); |
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93 | 93 | QObject::connect(axis(), SIGNAL(titlePenChanged(const QPen&)), this, SLOT(handleTitlePenChanged(const QPen&))); |
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94 | 94 | QObject::connect(axis(), SIGNAL(titleBrushChanged(const QBrush&)), this, SLOT(handleTitleBrushChanged(const QBrush&))); |
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95 | 95 | QObject::connect(axis(), SIGNAL(titleVisibleChanged(bool)), this, SLOT(handleTitleVisibleChanged(bool))); |
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96 | 96 | QObject::connect(axis()->d_ptr.data(), SIGNAL(rangeChanged(qreal, qreal)), this, SLOT(handleRangeChanged(qreal, qreal))); |
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97 | 97 | } |
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98 | 98 | |
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99 | 99 | void ChartAxisElement::handleArrowVisibleChanged(bool visible) |
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100 | 100 | { |
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101 | 101 | m_arrow->setVisible(visible); |
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102 | 102 | } |
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103 | 103 | |
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104 | 104 | void ChartAxisElement::handleGridVisibleChanged(bool visible) |
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105 | 105 | { |
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106 | 106 | m_grid->setVisible(visible); |
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107 | 107 | } |
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108 | 108 | |
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109 | 109 | void ChartAxisElement::handleLabelsVisibleChanged(bool visible) |
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110 | 110 | { |
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111 | 111 | QGraphicsLayoutItem::updateGeometry(); |
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112 | 112 | presenter()->layout()->invalidate(); |
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113 | 113 | m_labels->setVisible(visible); |
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114 | 114 | } |
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115 | 115 | |
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116 | 116 | void ChartAxisElement::handleShadesVisibleChanged(bool visible) |
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117 | 117 | { |
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118 | 118 | m_shades->setVisible(visible); |
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119 | 119 | } |
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120 | 120 | |
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121 | 121 | void ChartAxisElement::handleTitleVisibleChanged(bool visible) |
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122 | 122 | { |
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123 | 123 | QGraphicsLayoutItem::updateGeometry(); |
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124 | 124 | presenter()->layout()->invalidate(); |
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125 | 125 | m_title->setVisible(visible); |
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126 | 126 | } |
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127 | 127 | |
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128 | 128 | void ChartAxisElement::handleLabelsAngleChanged(int angle) |
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129 | 129 | { |
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130 | 130 | foreach (QGraphicsItem *item, m_labels->childItems()) |
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131 | 131 | item->setRotation(angle); |
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132 | 132 | |
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133 | 133 | QGraphicsLayoutItem::updateGeometry(); |
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134 | 134 | presenter()->layout()->invalidate(); |
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135 | 135 | } |
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136 | 136 | |
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137 | 137 | void ChartAxisElement::handleLabelsPenChanged(const QPen &pen) |
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138 | 138 | { |
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139 | 139 | Q_UNUSED(pen) |
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140 | 140 | } |
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141 | 141 | |
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142 | 142 | void ChartAxisElement::handleLabelsBrushChanged(const QBrush &brush) |
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143 | 143 | { |
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144 | 144 | foreach (QGraphicsItem *item, m_labels->childItems()) |
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145 | 145 | static_cast<QGraphicsTextItem *>(item)->setDefaultTextColor(brush.color()); |
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146 | 146 | } |
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147 | 147 | |
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148 | 148 | void ChartAxisElement::handleLabelsFontChanged(const QFont &font) |
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149 | 149 | { |
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150 | 150 | foreach (QGraphicsItem *item, m_labels->childItems()) |
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151 | 151 | static_cast<QGraphicsTextItem *>(item)->setFont(font); |
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152 | 152 | QGraphicsLayoutItem::updateGeometry(); |
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153 | 153 | presenter()->layout()->invalidate(); |
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154 | 154 | } |
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155 | 155 | |
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156 | 156 | void ChartAxisElement::handleTitleTextChanged(const QString &title) |
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157 | 157 | { |
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158 | 158 | QGraphicsLayoutItem::updateGeometry(); |
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159 | 159 | presenter()->layout()->invalidate(); |
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160 | 160 | if (title.isEmpty() || !m_title->isVisible()) |
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161 | 161 | m_title->setHtml(title); |
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162 | 162 | } |
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163 | 163 | |
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164 | 164 | void ChartAxisElement::handleTitlePenChanged(const QPen &pen) |
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165 | 165 | { |
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166 | 166 | Q_UNUSED(pen) |
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167 | 167 | } |
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168 | 168 | |
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169 | 169 | void ChartAxisElement::handleTitleBrushChanged(const QBrush &brush) |
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170 | 170 | { |
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171 | 171 | m_title->setDefaultTextColor(brush.color()); |
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172 | 172 | } |
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173 | 173 | |
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174 | 174 | void ChartAxisElement::handleTitleFontChanged(const QFont &font) |
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175 | 175 | { |
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176 | 176 | if (m_title->font() != font) { |
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177 | 177 | m_title->setFont(font); |
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178 | 178 | QGraphicsLayoutItem::updateGeometry(); |
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179 | 179 | presenter()->layout()->invalidate(); |
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180 | 180 | } |
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181 | 181 | } |
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182 | 182 | |
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183 | 183 | void ChartAxisElement::handleVisibleChanged(bool visible) |
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184 | 184 | { |
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185 | 185 | setVisible(visible); |
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186 | 186 | if (!visible) { |
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187 | 187 | m_grid->setVisible(visible); |
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188 | 188 | m_arrow->setVisible(visible); |
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189 | 189 | m_shades->setVisible(visible); |
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190 | 190 | m_labels->setVisible(visible); |
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191 | 191 | m_title->setVisible(visible); |
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192 | 192 | } else { |
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193 | 193 | m_grid->setVisible(axis()->isGridLineVisible()); |
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194 | 194 | m_arrow->setVisible(axis()->isLineVisible()); |
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195 | 195 | m_shades->setVisible(axis()->shadesVisible()); |
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196 | 196 | m_labels->setVisible(axis()->labelsVisible()); |
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197 | 197 | m_title->setVisible(axis()->isTitleVisible()); |
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198 | 198 | } |
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199 | 199 | |
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200 | 200 | if (presenter()) presenter()->layout()->invalidate(); |
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201 | 201 | } |
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202 | 202 | |
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203 | 203 | void ChartAxisElement::handleRangeChanged(qreal min, qreal max) |
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204 | 204 | { |
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205 | 205 | Q_UNUSED(min); |
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206 | 206 | Q_UNUSED(max); |
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207 | 207 | |
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208 | 208 | if (!isEmpty()) { |
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209 | 209 | QVector<qreal> layout = calculateLayout(); |
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210 | 210 | updateLayout(layout); |
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211 | 211 | QSizeF before = effectiveSizeHint(Qt::PreferredSize); |
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212 | 212 | QSizeF after = sizeHint(Qt::PreferredSize); |
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213 | 213 | |
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214 | 214 | if (before != after) { |
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215 | 215 | QGraphicsLayoutItem::updateGeometry(); |
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216 | 216 | // We don't want to call invalidate on layout, since it will change minimum size of |
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217 | 217 | // component, which we would like to avoid since it causes nasty flips when scrolling |
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218 | 218 | // or zooming, instead recalculate layout and use plotArea for extra space. |
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219 | 219 | presenter()->layout()->setGeometry(presenter()->layout()->geometry()); |
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220 | 220 | } |
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221 | 221 | } |
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222 | 222 | } |
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223 | 223 | |
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224 | 224 | bool ChartAxisElement::isEmpty() |
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225 | 225 | { |
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226 | 226 | return axisGeometry().isEmpty() |
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227 | 227 | || gridGeometry().isEmpty() |
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228 | 228 | || qFuzzyCompare(min(), max()); |
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229 | 229 | } |
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230 | 230 | |
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231 | 231 | qreal ChartAxisElement::min() const |
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232 | 232 | { |
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233 | 233 | return m_axis->d_ptr->min(); |
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234 | 234 | } |
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235 | 235 | |
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236 | 236 | qreal ChartAxisElement::max() const |
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237 | 237 | { |
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238 | 238 | return m_axis->d_ptr->max(); |
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239 | 239 | } |
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240 | 240 | |
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241 | 241 | QString ChartAxisElement::formatLabel(const QString &formatSpec, const QByteArray &array, |
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242 | 242 | qreal value, int precision, const QString &preStr, |
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243 | 243 | const QString &postStr) const |
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244 | 244 | { |
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245 | 245 | QString retVal; |
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246 | 246 | if (!formatSpec.isEmpty()) { |
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247 | 247 | if (formatSpec.at(0) == QLatin1Char('d') |
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248 | 248 | || formatSpec.at(0) == QLatin1Char('i') |
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249 | 249 | || formatSpec.at(0) == QLatin1Char('c')) { |
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250 | 250 | if (presenter()->localizeNumbers()) |
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251 | 251 | retVal = preStr + presenter()->locale().toString(qint64(value)) + postStr; |
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252 | 252 | else |
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253 | 253 | retVal = QString().sprintf(array, qint64(value)); |
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254 | 254 | } else if (formatSpec.at(0) == QLatin1Char('u') |
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255 | 255 | || formatSpec.at(0) == QLatin1Char('o') |
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256 | 256 | || formatSpec.at(0) == QLatin1Char('x') |
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257 | 257 | || formatSpec.at(0) == QLatin1Char('X')) { |
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258 | 258 | // These formats are not supported by localized numbers |
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259 | 259 | retVal = QString().sprintf(array, quint64(value)); |
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260 | 260 | } else if (formatSpec.at(0) == QLatin1Char('f') |
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261 | 261 | || formatSpec.at(0) == QLatin1Char('F') |
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262 | 262 | || formatSpec.at(0) == QLatin1Char('e') |
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263 | 263 | || formatSpec.at(0) == QLatin1Char('E') |
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264 | 264 | || formatSpec.at(0) == QLatin1Char('g') |
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265 | 265 | || formatSpec.at(0) == QLatin1Char('G')) { |
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266 | 266 | if (presenter()->localizeNumbers()) { |
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267 | 267 | retVal = preStr |
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268 | 268 | + presenter()->locale().toString(value, formatSpec.at(0).toLatin1(), |
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269 | 269 | precision) |
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270 | 270 | + postStr; |
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271 | 271 | } else { |
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272 | 272 | retVal = QString().sprintf(array, value); |
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273 | 273 | } |
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274 | 274 | } |
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275 | 275 | } |
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276 | 276 | return retVal; |
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277 | 277 | } |
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278 | 278 | |
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279 | 279 | QStringList ChartAxisElement::createValueLabels(qreal min, qreal max, int ticks, |
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280 | 280 | const QString &format) const |
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281 | 281 | { |
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282 | 282 | QStringList labels; |
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283 | 283 | |
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284 | 284 | if (max <= min || ticks < 1) |
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285 | 285 | return labels; |
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286 | 286 | |
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287 | 287 | if (format.isNull()) { |
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288 | 288 | int n = qMax(int(-qFloor(log10((max - min) / (ticks - 1)))), 0) + 1; |
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289 | 289 | for (int i = 0; i < ticks; i++) { |
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290 | 290 | qreal value = min + (i * (max - min) / (ticks - 1)); |
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291 | 291 | labels << presenter()->numberToString(value, 'f', n); |
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292 | 292 | } |
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293 | 293 | } else { |
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294 | 294 | QByteArray array = format.toLatin1(); |
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295 | 295 | QString formatSpec; |
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296 | 296 | QString preStr; |
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297 | 297 | QString postStr; |
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298 | 298 | int precision = 6; // Six is the default precision in Qt API |
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299 | 299 | if (presenter()->localizeNumbers()) { |
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300 | 300 | if (!labelFormatMatcherLocalized) |
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301 | 301 | labelFormatMatcherLocalized |
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302 | 302 | = new QRegExp(QString::fromLatin1(labelFormatMatchLocalizedString)); |
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303 | 303 | if (labelFormatMatcherLocalized->indexIn(format, 0) != -1) { |
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304 | 304 | preStr = labelFormatMatcherLocalized->cap(1); |
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305 | 305 | if (!labelFormatMatcherLocalized->cap(2).isEmpty()) |
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306 | 306 | precision = labelFormatMatcherLocalized->cap(2).toInt(); |
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307 | 307 | formatSpec = labelFormatMatcherLocalized->cap(3); |
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308 | 308 | postStr = labelFormatMatcherLocalized->cap(4); |
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309 | 309 | } |
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310 | 310 | } else { |
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311 | 311 | if (!labelFormatMatcher) |
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312 | 312 | labelFormatMatcher = new QRegExp(QString::fromLatin1(labelFormatMatchString)); |
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313 | 313 | if (labelFormatMatcher->indexIn(format, 0) != -1) |
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314 | 314 | formatSpec = labelFormatMatcher->cap(1); |
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315 | 315 | } |
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316 | 316 | for (int i = 0; i < ticks; i++) { |
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317 | 317 | qreal value = min + (i * (max - min) / (ticks - 1)); |
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318 | 318 | labels << formatLabel(formatSpec, array, value, precision, preStr, postStr); |
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319 | 319 | } |
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320 | 320 | } |
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321 | 321 | |
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322 | 322 | return labels; |
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323 | 323 | } |
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324 | 324 | |
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325 | 325 | QStringList ChartAxisElement::createLogValueLabels(qreal min, qreal max, qreal base, int ticks, |
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326 | 326 | const QString &format) const |
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327 | 327 | { |
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328 | 328 | QStringList labels; |
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329 | 329 | |
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330 | 330 | if (max <= min || ticks < 1) |
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331 | 331 | return labels; |
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332 | 332 | |
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333 | 333 | int firstTick; |
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334 | 334 | if (base > 1) |
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335 | 335 | firstTick = ceil(log10(min) / log10(base)); |
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336 | 336 | else |
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337 | 337 | firstTick = ceil(log10(max) / log10(base)); |
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338 | 338 | |
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339 | 339 | if (format.isNull()) { |
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340 | 340 | int n = 0; |
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341 | 341 | if (ticks > 1) |
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342 | 342 | n = qMax(int(-qFloor(log10((max - min) / (ticks - 1)))), 0); |
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343 | 343 | n++; |
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344 | 344 | for (int i = firstTick; i < ticks + firstTick; i++) { |
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345 | 345 | qreal value = qPow(base, i); |
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346 | 346 | labels << presenter()->numberToString(value, 'f', n); |
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347 | 347 | } |
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348 | 348 | } else { |
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349 | 349 | QByteArray array = format.toLatin1(); |
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350 | 350 | QString formatSpec; |
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351 | 351 | QString preStr; |
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352 | 352 | QString postStr; |
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353 | 353 | int precision = 6; // Six is the default precision in Qt API |
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354 | 354 | if (presenter()->localizeNumbers()) { |
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355 | 355 | if (!labelFormatMatcherLocalized) |
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356 | 356 | labelFormatMatcherLocalized = |
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357 | 357 | new QRegExp(QString::fromLatin1(labelFormatMatchLocalizedString)); |
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358 | 358 | if (labelFormatMatcherLocalized->indexIn(format, 0) != -1) { |
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359 | 359 | preStr = labelFormatMatcherLocalized->cap(1); |
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360 | 360 | if (!labelFormatMatcherLocalized->cap(2).isEmpty()) |
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361 | 361 | precision = labelFormatMatcherLocalized->cap(2).toInt(); |
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362 | 362 | formatSpec = labelFormatMatcherLocalized->cap(3); |
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363 | 363 | postStr = labelFormatMatcherLocalized->cap(4); |
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364 | 364 | } |
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365 | 365 | } else { |
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366 | 366 | if (!labelFormatMatcher) |
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367 | 367 | labelFormatMatcher = new QRegExp(QString::fromLatin1(labelFormatMatchString)); |
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368 | 368 | if (labelFormatMatcher->indexIn(format, 0) != -1) |
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369 | 369 | formatSpec = labelFormatMatcher->cap(1); |
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370 | 370 | } |
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371 | 371 | for (int i = firstTick; i < ticks + firstTick; i++) { |
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372 | 372 | qreal value = qPow(base, i); |
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373 | 373 | labels << formatLabel(formatSpec, array, value, precision, preStr, postStr); |
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374 | 374 | } |
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375 | 375 | } |
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376 | 376 | |
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377 | 377 | return labels; |
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378 | 378 | } |
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379 | 379 | |
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380 | 380 | QStringList ChartAxisElement::createDateTimeLabels(qreal min, qreal max,int ticks, |
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381 | 381 | const QString &format) const |
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382 | 382 | { |
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383 | 383 | QStringList labels; |
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384 | 384 | |
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385 | 385 | if (max <= min || ticks < 1) |
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386 | 386 | return labels; |
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387 | 387 | |
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388 | 388 | int n = qMax(int(-floor(log10((max - min) / (ticks - 1)))), 0); |
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389 | 389 | n++; |
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390 | 390 | for (int i = 0; i < ticks; i++) { |
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391 | 391 | qreal value = min + (i * (max - min) / (ticks - 1)); |
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392 | 392 | labels << presenter()->locale().toString(QDateTime::fromMSecsSinceEpoch(value), format); |
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393 | 393 | } |
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394 | 394 | return labels; |
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395 | 395 | } |
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396 | 396 | |
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397 | 397 | void ChartAxisElement::axisSelected() |
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398 | 398 | { |
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399 | 399 | emit clicked(); |
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400 | 400 | } |
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401 | 401 | |
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402 | 402 | #include "moc_chartaxiselement_p.cpp" |
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403 | 403 | |
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404 | 404 | QT_CHARTS_END_NAMESPACE |
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