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1 | 1 | /**************************************************************************** |
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2 | 2 | ** |
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3 | 3 | ** Copyright (C) 2013 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 "chartview.h" |
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22 | 22 | #include <QMouseEvent> |
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23 | 23 | #include <QDebug> |
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24 | 24 | #include <QAbstractAxis> |
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25 | 25 | #include <QValueAxis> |
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26 | 26 | |
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27 | 27 | QTCOMMERCIALCHART_USE_NAMESPACE |
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28 | 28 | |
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29 | 29 | ChartView::ChartView(QWidget *parent) |
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30 | 30 | : QChartView(parent) |
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31 | 31 | { |
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32 | 32 | } |
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33 | 33 | |
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34 | 34 | //![1] |
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35 | 35 | void ChartView::keyPressEvent(QKeyEvent *event) |
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36 | 36 | { |
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37 | 37 | switch (event->key()) { |
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38 | 38 | case Qt::Key_Plus: |
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39 | 39 | chart()->zoomIn(); |
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40 | 40 | break; |
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41 | 41 | case Qt::Key_Minus: |
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42 | 42 | chart()->zoomOut(); |
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43 | 43 | break; |
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44 | 44 | case Qt::Key_Left: |
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45 | 45 | chart()->scroll(-1.0, 0); |
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46 | 46 | break; |
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47 | 47 | case Qt::Key_Right: |
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48 | 48 | chart()->scroll(1.0, 0); |
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49 | 49 | break; |
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50 | 50 | case Qt::Key_Up: |
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51 | 51 | chart()->scroll(0, 1.0); |
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52 | 52 | break; |
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53 | 53 | case Qt::Key_Down: |
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54 | 54 | chart()->scroll(0, -1.0); |
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55 | 55 | break; |
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56 | 56 | case Qt::Key_Space: |
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57 | 57 | switchChartType(); |
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58 | 58 | break; |
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59 | 59 | default: |
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60 | 60 | QGraphicsView::keyPressEvent(event); |
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61 | 61 | break; |
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62 | 62 | } |
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63 | 63 | } |
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64 | 64 | //![1] |
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65 | 65 | |
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66 | 66 | //![2] |
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67 | 67 | void ChartView::switchChartType() |
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68 | 68 | { |
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69 | 69 | QChart *newChart; |
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70 | 70 | QChart *oldChart = chart(); |
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71 | 71 | |
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72 | 72 | if (oldChart->chartType() == QChart::ChartTypeCartesian) |
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73 | 73 | newChart = new QPolarChart(); |
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74 | 74 | else |
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75 | 75 | newChart = new QChart(); |
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76 | 76 | |
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77 | 77 | // Move series and axes from old chart to new one |
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78 | 78 | QList<QAbstractSeries *> seriesList = oldChart->series(); |
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79 | 79 | QList<QAbstractAxis *> axisList = oldChart->axes(); |
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80 | QList<QPair<qreal, qreal>> axisRanges; | |
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80 | QList<QPair<qreal, qreal> > axisRanges; | |
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81 | 81 | |
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82 | 82 | foreach (QAbstractAxis *axis, axisList) { |
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83 | 83 | QValueAxis *valueAxis = static_cast<QValueAxis *>(axis); |
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84 | 84 | axisRanges.append(QPair<qreal, qreal>(valueAxis->min(), valueAxis->max())); |
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85 | 85 | } |
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86 | 86 | |
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87 | 87 | foreach (QAbstractSeries *series, seriesList) |
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88 | 88 | oldChart->removeSeries(series); |
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89 | 89 | |
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90 | 90 | foreach (QAbstractAxis *axis, axisList) { |
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91 | 91 | oldChart->removeAxis(axis); |
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92 | 92 | newChart->addAxis(axis, axis->alignment()); |
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93 | 93 | } |
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94 | 94 | |
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95 | 95 | foreach (QAbstractSeries *series, seriesList) { |
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96 | 96 | newChart->addSeries(series); |
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97 | 97 | foreach (QAbstractAxis *axis, axisList) |
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98 | 98 | series->attachAxis(axis); |
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99 | 99 | } |
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100 | 100 | |
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101 | 101 | int count = 0; |
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102 | 102 | foreach (QAbstractAxis *axis, axisList) { |
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103 | 103 | axis->setRange(axisRanges[count].first, axisRanges[count].second); |
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104 | 104 | count++; |
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105 | 105 | } |
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106 | 106 | |
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107 | 107 | newChart->setTitle(oldChart->title()); |
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108 | 108 | setChart(newChart); |
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109 | 109 | delete oldChart; |
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110 | 110 | } |
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111 | 111 | //![2] |
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