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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 "qchart.h" |
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22 | 22 | #include "qchart_p.h" |
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23 | 23 | #include "legendscroller_p.h" |
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24 | 24 | #include "qlegend_p.h" |
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25 | 25 | #include "chartbackground_p.h" |
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26 | 26 | #include "qaxis.h" |
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27 | 27 | #include <QGraphicsScene> |
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28 | 28 | #include <QGraphicsSceneResizeEvent> |
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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 | /*! |
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33 | 33 | \enum QChart::ChartTheme |
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34 | 34 | |
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35 | 35 | This enum describes the theme used by the chart. |
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36 | 36 | |
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37 | 37 | \value ChartThemeLight The default theme |
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38 | 38 | \value ChartThemeBlueCerulean |
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39 | 39 | \value ChartThemeDark |
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40 | 40 | \value ChartThemeBrownSand |
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41 | 41 | \value ChartThemeBlueNcs |
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42 | 42 | \value ChartThemeHighContrast |
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43 | 43 | \value ChartThemeBlueIcy |
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44 | 44 | */ |
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45 | 45 | |
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46 | 46 | /*! |
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47 | 47 | \enum QChart::AnimationOption |
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48 | 48 | |
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49 | 49 | For enabling/disabling animations. Defaults to NoAnimation. |
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50 | 50 | |
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51 | 51 | \value NoAnimation |
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52 | 52 | \value GridAxisAnimations |
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53 | 53 | \value SeriesAnimations |
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54 | 54 | \value AllAnimations |
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55 | 55 | */ |
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56 | 56 | |
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57 | 57 | /*! |
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58 | 58 | \class QChart |
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59 | 59 | \brief QtCommercial chart API. |
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60 | 60 | |
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61 | 61 | QChart is a QGraphicsWidget that you can show in a QGraphicsScene. It manages the graphical |
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62 | 62 | representation of different types of series and other chart related objects like |
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63 | 63 | QAxis and QLegend. If you simply want to show a chart in a layout, you can use the |
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64 | 64 | convenience class QChartView instead of QChart. |
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65 | 65 | \sa QChartView |
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66 | 66 | */ |
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67 | 67 | |
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68 | 68 | /*! |
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69 | \property QChart::animationOptions | |
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70 | The animation \a options for the chart. Animations are enabled/disabled based on this setting. | |
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71 | */ | |
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72 | ||
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73 | /*! | |
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74 | \property QChart::backgroundVisible | |
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75 | Whether the chart background is visible or not. | |
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76 | \sa setBackgroundBrush(), setBackgroundPen() | |
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77 | */ | |
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78 | ||
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79 | /*! | |
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80 | \property QChart::dropShadowEnabled | |
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81 | If set to true, the background drop shadow effect is enabled. If set to false, it is disabled. Note that the drop | |
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82 | shadow effect depends on theme, which means the setting may be changed if you switch to another theme. | |
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83 | */ | |
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84 | ||
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85 | /*! | |
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86 | \property QChart::margins | |
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87 | Margins around the plot area. Note that the margin area is used for drawing chart title, legend and axes. | |
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88 | */ | |
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89 | ||
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90 | /*! | |
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91 | \property QChart::theme | |
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92 | Theme is a built-in collection of UI style related settings applied for all visual elements of a chart, like colors, | |
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93 | pens, brushes and fonts of series, axes, title and legend. \l {Chart themes demo} shows an example with a few | |
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94 | different themes. | |
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95 | Note: changing the theme will overwrite all customizations previously applied to the series. | |
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96 | */ | |
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97 | ||
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98 | /*! | |
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99 | \property QChart::title | |
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100 | Title is the name (label) of a chart. It is shown as a headline on top of the chart. | |
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101 | */ | |
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102 | ||
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103 | /*! | |
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104 | \fn void QChart::marginsChanged(QRectF newMargins) | |
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105 | The margins around plot area have changed to \a newMargins. This may happen for example if you change title font size, | |
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106 | modify axes or hide/show legend. | |
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107 | */ | |
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108 | ||
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109 | /*! | |
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69 | 110 | Constructs a chart object which is a child of a\a parent. Parameter \a wFlags is passed to the QGraphicsWidget constructor. |
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70 | 111 | */ |
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71 | 112 | QChart::QChart(QGraphicsItem *parent, Qt::WindowFlags wFlags) : QGraphicsWidget(parent,wFlags), |
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72 | 113 | d_ptr(new QChartPrivate()) |
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73 | 114 | { |
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74 | 115 | d_ptr->m_dataset = new ChartDataSet(this); |
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75 | 116 | d_ptr->m_presenter = new ChartPresenter(this,d_ptr->m_dataset); |
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76 | 117 | d_ptr->createConnections(); |
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77 | 118 | d_ptr->m_legend = new LegendScroller(this); |
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78 | 119 | d_ptr->m_presenter->setTheme(QChart::ChartThemeLight, false); |
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79 | 120 | connect(d_ptr->m_presenter, SIGNAL(marginsChanged(QRectF)), this, SIGNAL(marginsChanged(QRectF))); |
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80 | 121 | } |
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81 | 122 | |
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82 | 123 | /*! |
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83 | 124 | Destroys the object and it's children, like series and axis objects added to it. |
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84 | 125 | */ |
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85 | 126 | QChart::~QChart() |
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86 | 127 | { |
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87 | 128 | //delete first presenter , since this is a root of all the graphical items |
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88 | 129 | delete d_ptr->m_presenter; |
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89 | 130 | d_ptr->m_presenter=0; |
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90 | 131 | } |
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91 | 132 | |
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92 | 133 | /*! |
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93 | 134 | Adds the \a series and optional \a axisY onto the chart and takes the ownership of the objects. |
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94 | 135 | If auto scaling is enabled, re-scales the axes the series is bound to (both the x axis and |
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95 | 136 | the y axis). |
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96 | 137 | |
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97 | 138 | \sa removeSeries(), removeAllSeries() |
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98 | 139 | */ |
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99 | 140 | void QChart::addSeries(QAbstractSeries *series, QAxis *axisY) |
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100 | 141 | { |
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101 | 142 | Q_ASSERT(series); |
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102 | 143 | d_ptr->m_dataset->addSeries(series, axisY); |
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103 | 144 | } |
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104 | 145 | |
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105 | 146 | /*! |
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106 | 147 | Removes the \a series specified in a perameter from the QChartView. |
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107 | 148 | It releses its ownership of the specified QChartSeries object. |
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108 | 149 | It does not delete the pointed QChartSeries data object |
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109 | 150 | \sa addSeries(), removeAllSeries() |
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110 | 151 | */ |
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111 | 152 | void QChart::removeSeries(QAbstractSeries *series) |
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112 | 153 | { |
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113 | 154 | Q_ASSERT(series); |
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114 | 155 | d_ptr->m_dataset->removeSeries(series); |
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115 | 156 | } |
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116 | 157 | |
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117 | 158 | /*! |
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118 | 159 | Removes all the QChartSeries that have been added to the QChartView |
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119 | 160 | It also deletes the pointed QChartSeries data objects |
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120 | 161 | \sa addSeries(), removeSeries() |
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121 | 162 | */ |
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122 | 163 | void QChart::removeAllSeries() |
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123 | 164 | { |
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124 | 165 | d_ptr->m_dataset->removeAllSeries(); |
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125 | 166 | } |
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126 | 167 | |
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127 | 168 | /*! |
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128 | 169 | Sets the \a brush that is used for painting the background of the chart area. |
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129 | 170 | */ |
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130 | 171 | void QChart::setBackgroundBrush(const QBrush& brush) |
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131 | 172 | { |
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132 | 173 | //TODO: refactor me |
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133 | 174 | d_ptr->m_presenter->createChartBackgroundItem(); |
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134 | 175 | d_ptr->m_presenter->m_backgroundItem->setBrush(brush); |
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135 | 176 | d_ptr->m_presenter->m_backgroundItem->update(); |
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136 | 177 | } |
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137 | 178 | |
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138 | 179 | /*! |
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139 | 180 | Gets the brush that is used for painting the background of the chart area. |
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140 | 181 | */ |
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141 | 182 | QBrush QChart::backgroundBrush() const |
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142 | 183 | { |
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143 | 184 | //TODO: refactor me |
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144 | 185 | if (!d_ptr->m_presenter->m_backgroundItem) return QBrush(); |
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145 | 186 | return (d_ptr->m_presenter->m_backgroundItem)->brush(); |
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146 | 187 | } |
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147 | 188 | |
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148 | 189 | /*! |
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149 | 190 | Sets the \a pen that is used for painting the background of the chart area. |
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150 | 191 | */ |
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151 | 192 | void QChart::setBackgroundPen(const QPen& pen) |
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152 | 193 | { |
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153 | 194 | //TODO: refactor me |
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154 | 195 | d_ptr->m_presenter->createChartBackgroundItem(); |
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155 | 196 | d_ptr->m_presenter->m_backgroundItem->setPen(pen); |
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156 | 197 | d_ptr->m_presenter->m_backgroundItem->update(); |
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157 | 198 | } |
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158 | 199 | |
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159 | 200 | /*! |
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160 | 201 | Gets the pen that is used for painting the background of the chart area. |
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161 | 202 | */ |
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162 | 203 | QPen QChart::backgroundPen() const |
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163 | 204 | { |
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164 | 205 | //TODO: refactor me |
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165 | 206 | if (!d_ptr->m_presenter->m_backgroundItem) return QPen(); |
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166 | 207 | return d_ptr->m_presenter->m_backgroundItem->pen(); |
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167 | 208 | } |
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168 | 209 | |
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169 | 210 | /*! |
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170 | 211 | Sets the chart \a title. The description text that is drawn above the chart. |
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171 | 212 | */ |
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172 | 213 | void QChart::setTitle(const QString& title) |
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173 | 214 | { |
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174 | 215 | //TODO: refactor me |
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175 | 216 | d_ptr->m_presenter->createChartTitleItem(); |
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176 | 217 | d_ptr->m_presenter->m_titleItem->setText(title); |
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177 | 218 | d_ptr->m_presenter->updateLayout(); |
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178 | 219 | } |
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179 | 220 | |
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180 | 221 | /*! |
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181 | 222 | Returns the chart title. The description text that is drawn above the chart. |
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182 | 223 | */ |
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183 | 224 | QString QChart::title() const |
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184 | 225 | { |
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185 | 226 | //TODO: refactor me |
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186 | 227 | if (d_ptr->m_presenter->m_titleItem) |
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187 | 228 | return d_ptr->m_presenter->m_titleItem->text(); |
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188 | 229 | else |
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189 | 230 | return QString(); |
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190 | 231 | } |
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191 | 232 | |
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192 | 233 | /*! |
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193 | 234 | Sets the \a font that is used for drawing the chart description text that is rendered above the chart. |
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194 | 235 | */ |
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195 | 236 | void QChart::setTitleFont(const QFont& font) |
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196 | 237 | { |
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197 | 238 | //TODO: refactor me |
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198 | 239 | d_ptr->m_presenter->createChartTitleItem(); |
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199 | 240 | d_ptr->m_presenter->m_titleItem->setFont(font); |
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200 | 241 | d_ptr->m_presenter->updateLayout(); |
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201 | 242 | } |
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202 | 243 | |
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203 | 244 | /*! |
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204 | 245 | Gets the font that is used for drawing the chart description text that is rendered above the chart. |
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205 | 246 | */ |
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206 | 247 | QFont QChart::titleFont() const |
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207 | 248 | { |
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208 | 249 | if (d_ptr->m_presenter->m_titleItem) |
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209 | 250 | return d_ptr->m_presenter->m_titleItem->font(); |
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210 | 251 | else |
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211 | 252 | return QFont(); |
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212 | 253 | } |
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213 | 254 | |
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214 | 255 | /*! |
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215 | 256 | Sets the \a brush used for rendering the title text. |
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216 | 257 | */ |
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217 | 258 | void QChart::setTitleBrush(const QBrush &brush) |
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218 | 259 | { |
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219 | 260 | //TODO: refactor me |
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220 | 261 | d_ptr->m_presenter->createChartTitleItem(); |
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221 | 262 | d_ptr->m_presenter->m_titleItem->setBrush(brush); |
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222 | 263 | d_ptr->m_presenter->updateLayout(); |
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223 | 264 | } |
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224 | 265 | |
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225 | 266 | /*! |
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226 | 267 | Returns the brush used for rendering the title text. |
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227 | 268 | */ |
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228 | 269 | QBrush QChart::titleBrush() const |
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229 | 270 | { |
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230 | 271 | //TODO: refactor me |
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231 | 272 | if (!d_ptr->m_presenter->m_titleItem) return QBrush(); |
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232 | 273 | return d_ptr->m_presenter->m_titleItem->brush(); |
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233 | 274 | } |
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234 | 275 | |
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235 | /*! | |
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236 | Sets the \a theme used by the chart for rendering the graphical representation of the data. | |
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237 | ||
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238 | Note: changing the theme will overwrite all customizations (pen, brush, font, ect.) done to the series. | |
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239 | \sa theme() | |
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240 | */ | |
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241 | 276 | void QChart::setTheme(QChart::ChartTheme theme) |
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242 | 277 | { |
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243 | 278 | d_ptr->m_presenter->setTheme(theme); |
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244 | 279 | } |
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245 | 280 | |
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246 | /*! | |
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247 | Returns the theme enum used by the chart. | |
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248 | \sa ChartTheme, setTheme() | |
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249 | */ | |
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250 | 281 | QChart::ChartTheme QChart::theme() const |
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251 | 282 | { |
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252 | 283 | return d_ptr->m_presenter->theme(); |
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253 | 284 | } |
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254 | 285 | |
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255 | 286 | /*! |
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256 | 287 | Zooms in the view by a factor of 2 |
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257 | 288 | */ |
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258 | 289 | void QChart::zoomIn() |
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259 | 290 | { |
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260 | 291 | d_ptr->m_presenter->zoomIn(2.0); |
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261 | 292 | } |
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262 | 293 | |
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263 | 294 | /*! |
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264 | 295 | Zooms in the view to a maximum level at which \a rect is still fully visible. |
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265 | 296 | */ |
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266 | 297 | void QChart::zoomIn(const QRectF& rect) |
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267 | 298 | { |
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268 | 299 | if (!rect.isValid()) return; |
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269 | 300 | d_ptr->m_presenter->zoomIn(rect); |
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270 | 301 | } |
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271 | 302 | |
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272 | 303 | /*! |
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273 | 304 | Restores the view zoom level to the previous one. |
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274 | 305 | */ |
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275 | 306 | void QChart::zoomOut() |
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276 | 307 | { |
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277 | 308 | d_ptr->m_presenter->zoomOut(2.0); |
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278 | 309 | } |
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279 | 310 | |
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280 | 311 | /*! |
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281 | 312 | Zooms in the view by a \a factor. |
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282 | 313 | |
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283 | 314 | A factor over 1.0 zooms the view in and factor between 0.0 and 1.0 zooms out. |
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284 | 315 | */ |
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285 | 316 | void QChart::zoom(qreal factor) |
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286 | 317 | { |
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287 | 318 | if (qFuzzyIsNull(factor)) |
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288 | 319 | return; |
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289 | 320 | |
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290 | 321 | if (qFuzzyCompare(factor, 1.0)) |
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291 | 322 | return; |
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292 | 323 | |
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293 | 324 | if (factor < 0) |
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294 | 325 | return; |
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295 | 326 | |
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296 | 327 | if (factor > 1.0) |
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297 | 328 | d_ptr->m_presenter->zoomIn(factor); |
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298 | 329 | else |
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299 | 330 | d_ptr->m_presenter->zoomOut(1.0 / factor); |
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300 | 331 | } |
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301 | 332 | |
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302 | 333 | /*! |
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303 | 334 | Returns the pointer to the x axis object of the chart |
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304 | 335 | */ |
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305 | 336 | QAxis* QChart::axisX() const |
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306 | 337 | { |
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307 | 338 | return d_ptr->m_dataset->axisX(); |
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308 | 339 | } |
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309 | 340 | |
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310 | 341 | /*! |
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311 | 342 | Returns the pointer to the y axis object of the \a series |
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312 | 343 | If no \a series is provided then default Y axis of the chart is returned. |
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313 | 344 | */ |
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314 | 345 | QAxis* QChart::axisY(QAbstractSeries *series) const |
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315 | 346 | { |
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316 | 347 | return d_ptr->m_dataset->axisY(series); |
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317 | 348 | } |
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318 | 349 | |
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319 | 350 | /*! |
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320 | 351 | Returns the legend object of the chart. Ownership stays in chart. |
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321 | 352 | */ |
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322 | 353 | QLegend* QChart::legend() const |
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323 | 354 | { |
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324 | 355 | return d_ptr->m_legend; |
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325 | 356 | } |
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326 | 357 | |
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327 | 358 | /*! |
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328 | 359 | Returns the rect that contains information about margins (distance between chart widget edge and axes). |
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329 | 360 | Individual margins can be obtained by calling left, top, right, bottom on the returned rect. |
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330 | 361 | */ |
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331 | 362 | QRectF QChart::margins() const |
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332 | 363 | { |
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333 | 364 | return d_ptr->m_presenter->margins(); |
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334 | 365 | } |
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335 | 366 | |
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336 | 367 | |
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337 | 368 | /*! |
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338 | 369 | Resizes and updates the chart area using the \a event data |
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339 | 370 | */ |
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340 | 371 | void QChart::resizeEvent(QGraphicsSceneResizeEvent *event) |
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341 | 372 | { |
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342 | 373 | d_ptr->m_rect = QRectF(QPoint(0,0),event->newSize()); |
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343 | 374 | QGraphicsWidget::resizeEvent(event); |
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344 | 375 | d_ptr->m_presenter->setGeometry(d_ptr->m_rect); |
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345 | 376 | } |
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346 | 377 | |
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347 | /*! | |
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348 | Sets animation \a options for the chart | |
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349 | */ | |
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350 | 378 | void QChart::setAnimationOptions(AnimationOptions options) |
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351 | 379 | { |
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352 | 380 | d_ptr->m_presenter->setAnimationOptions(options); |
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353 | 381 | } |
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354 | 382 | |
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355 | /*! | |
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356 | Returns animation options for the chart | |
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357 | */ | |
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358 | 383 | QChart::AnimationOptions QChart::animationOptions() const |
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359 | 384 | { |
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360 | 385 | return d_ptr->m_presenter->animationOptions(); |
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361 | 386 | } |
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362 | 387 | |
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363 | 388 | /*! |
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364 | 389 | Scrolls the visible area of the chart to the left by the distance between two x axis ticks |
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365 | 390 | */ |
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366 | 391 | void QChart::scrollLeft() |
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367 | 392 | { |
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368 | 393 | d_ptr->m_presenter->scroll(-d_ptr->m_presenter->chartGeometry().width()/(axisX()->ticksCount()-1),0); |
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369 | 394 | } |
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370 | 395 | |
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371 | 396 | /*! |
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372 | 397 | Scrolls the visible area of the chart to the right by the distance between two x axis ticks |
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373 | 398 | */ |
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374 | 399 | void QChart::scrollRight() |
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375 | 400 | { |
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376 | 401 | d_ptr->m_presenter->scroll(d_ptr->m_presenter->chartGeometry().width()/(axisX()->ticksCount()-1),0); |
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377 | 402 | } |
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378 | 403 | |
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379 | 404 | /*! |
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380 | 405 | Scrolls the visible area of the chart up by the distance between two y axis ticks |
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381 | 406 | */ |
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382 | 407 | void QChart::scrollUp() |
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383 | 408 | { |
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384 | 409 | d_ptr->m_presenter->scroll(0,d_ptr->m_presenter->chartGeometry().width()/(axisY()->ticksCount()-1)); |
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385 | 410 | } |
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386 | 411 | |
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387 | 412 | /*! |
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388 | 413 | Scrolls the visible area of the chart down by the distance between two y axis ticks |
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389 | 414 | */ |
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390 | 415 | void QChart::scrollDown() |
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391 | 416 | { |
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392 | 417 | d_ptr->m_presenter->scroll(0,-d_ptr->m_presenter->chartGeometry().width()/(axisY()->ticksCount()-1)); |
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393 | 418 | } |
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394 | 419 | |
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395 | 420 | /*! |
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396 | 421 | Scrolls the visible area of the chart by the distance defined in the \a delta. |
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397 | 422 | */ |
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398 | 423 | void QChart::scroll(const QPointF &delta) |
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399 | 424 | { |
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400 | 425 | d_ptr->m_presenter->scroll(-delta.x(), delta.y()); |
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401 | 426 | } |
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402 | 427 | |
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403 | /*! | |
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404 | Sets the chart background visibility state to \a visible | |
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405 | */ | |
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406 | 428 | void QChart::setBackgroundVisible(bool visible) |
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407 | 429 | { |
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408 | 430 | //TODO: refactor me |
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409 | 431 | d_ptr->m_presenter->createChartBackgroundItem(); |
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410 | 432 | d_ptr->m_presenter->m_backgroundItem->setVisible(visible); |
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411 | 433 | } |
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412 | 434 | |
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413 | /*! | |
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414 | Returns the chart's background visibility state | |
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415 | */ | |
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416 | 435 | bool QChart::isBackgroundVisible() const |
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417 | 436 | { |
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418 | 437 | //TODO: refactor me |
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419 | 438 | if (!d_ptr->m_presenter->m_backgroundItem) |
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420 | 439 | return false; |
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421 | 440 | |
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422 | 441 | return d_ptr->m_presenter->m_backgroundItem->isVisible(); |
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423 | 442 | } |
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424 | 443 | |
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425 | /*! | |
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426 | Sets the background drop shadow effect state to \a enabled. | |
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427 | */ | |
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428 | 444 | void QChart::setDropShadowEnabled(bool enabled) |
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429 | 445 | { |
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430 | 446 | d_ptr->m_presenter->createChartBackgroundItem(); |
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431 | 447 | d_ptr->m_presenter->m_backgroundItem->setDropShadowEnabled(enabled); |
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432 | 448 | } |
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433 | 449 | |
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434 | /*! | |
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435 | Returns true if the drop shadow effect is enabled for the chart background. | |
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436 | */ | |
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437 | 450 | bool QChart::isDropShadowEnabled() const |
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438 | 451 | { |
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439 | 452 | if (!d_ptr->m_presenter->m_backgroundItem) |
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440 | 453 | return false; |
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441 | 454 | |
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442 | 455 | return d_ptr->m_presenter->m_backgroundItem->isDropShadowEnabled(); |
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443 | 456 | } |
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444 | 457 | |
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445 | 458 | /*! |
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446 | 459 | Returns all the series that are added to the chart. |
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447 | 460 | |
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448 | 461 | \sa addSeries(), removeSeries(), removeAllSeries() |
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449 | 462 | */ |
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450 | 463 | QList<QAbstractSeries*> QChart::series() const |
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451 | 464 | { |
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452 | 465 | return d_ptr->m_dataset->series(); |
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453 | 466 | } |
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454 | 467 | |
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455 | 468 | ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
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456 | 469 | |
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457 | 470 | QChartPrivate::QChartPrivate(): |
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458 | 471 | m_legend(0), |
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459 | 472 | m_dataset(0), |
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460 | 473 | m_presenter(0) |
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461 | 474 | { |
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462 | 475 | |
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463 | 476 | } |
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464 | 477 | |
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465 | 478 | QChartPrivate::~QChartPrivate() |
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466 | 479 | { |
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467 | 480 | |
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468 | 481 | } |
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469 | 482 | |
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470 | 483 | void QChartPrivate::createConnections() |
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471 | 484 | { |
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472 | 485 | QObject::connect(m_dataset,SIGNAL(seriesAdded(QAbstractSeries*,Domain*)),m_presenter,SLOT(handleSeriesAdded(QAbstractSeries*,Domain*))); |
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473 | 486 | QObject::connect(m_dataset,SIGNAL(seriesRemoved(QAbstractSeries*)),m_presenter,SLOT(handleSeriesRemoved(QAbstractSeries*))); |
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474 | 487 | QObject::connect(m_dataset,SIGNAL(axisAdded(QAxis*,Domain*)),m_presenter,SLOT(handleAxisAdded(QAxis*,Domain*))); |
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475 | 488 | QObject::connect(m_dataset,SIGNAL(axisRemoved(QAxis*)),m_presenter,SLOT(handleAxisRemoved(QAxis*))); |
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476 | 489 | } |
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477 | 490 | |
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478 | 491 | #include "moc_qchart.cpp" |
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479 | 492 | |
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480 | 493 | QTCOMMERCIALCHART_END_NAMESPACE |
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