| @@ -32,7 +32,7 | |||
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32 | 32 | |
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33 | 33 | \snippet ../examples/presenterchart/chartview.cpp 3 |
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34 | 34 | |
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35 | In \c handleTimeout() slot we change currently displayed chart by removing previous series and adding next series from the \c m_series list. We also set proper title. | |
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35 | In \c handleTimeout() slot we change currently displayed chart by removing previous series and adding next series from the \c m_series list. We also set proper title and create the axes for the chart. | |
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36 | 36 | |
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37 | 37 | \snippet ../examples/presenterchart/chartview.cpp 4 |
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38 | 38 | */ |
| @@ -25,15 +25,17 | |||
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25 | 25 | #include <QAreaSeries> |
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26 | 26 | #include <QTime> |
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27 | 27 | |
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28 |
ChartView::ChartView(QChart* chart,QWidget* parent): |
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29 | m_index(-1),m_chart(chart) | |
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28 | ChartView::ChartView(QChart* chart,QWidget* parent): | |
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29 | QChartView(chart,parent), | |
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30 | m_index(-1), | |
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31 | m_chart(chart) | |
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30 | 32 | { |
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31 | 33 | m_chart->setTitle("Charts presenter"); |
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32 | 34 | m_chart->setDropShadowEnabled(false); |
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33 | 35 | QObject::connect(&m_timer,SIGNAL(timeout()),this,SLOT(handleTimeout())); |
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34 | 36 | m_timer.setInterval(3000); |
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35 | 37 | |
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36 | //![1] | |
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38 | //![1] | |
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37 | 39 | QLineSeries* series0 = new QLineSeries(); |
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38 | 40 | series0->setName("line"); |
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39 | 41 | |
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45 | 47 | |
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46 | 48 | QAreaSeries* series3 = new QAreaSeries(series0); |
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47 | 49 | series3->setName("area"); |
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48 | //![1] | |
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50 | //![1] | |
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49 | 51 | |
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50 | //![2] | |
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52 | //![2] | |
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51 | 53 | int numPoints = 10; |
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52 | 54 | |
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53 | 55 | for (int x = 0; x <= numPoints; ++x) { |
| @@ -56,9 +58,9 m_index(-1),m_chart(chart) | |||
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56 | 58 | series1->append(x,y); |
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57 | 59 | series2->append(x,y); |
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58 | 60 | } |
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59 | //![2] | |
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61 | //![2] | |
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60 | 62 | |
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61 | //![3] | |
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63 | //![3] | |
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62 | 64 | m_series<<series0; |
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63 | 65 | m_titles<< m_chart->title()+": LineChart"; |
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64 | 66 | m_series<<series1; |
| @@ -67,7 +69,7 m_index(-1),m_chart(chart) | |||
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67 | 69 | m_titles<< m_chart->title()+": SplineChart"; |
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68 | 70 | m_series<<series3; |
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69 | 71 | m_titles<< m_chart->title()+": AreaChart"; |
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70 | //![3] | |
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72 | //![3] | |
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71 | 73 | |
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72 | 74 | m_timer.start(); |
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73 | 75 | handleTimeout(); |
| @@ -75,7 +77,7 m_index(-1),m_chart(chart) | |||
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75 | 77 | |
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76 | 78 | ChartView::~ChartView() |
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77 | 79 | { |
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78 | if(m_series.size()==0) return; | |
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80 | if(m_series.size() == 0) return; | |
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79 | 81 | m_chart->removeSeries(m_series.at(m_index)); |
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80 | 82 | m_series.removeLast(); //remove QAreaSeries instance since they will be deleted when QLineSeries instance is gone |
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81 | 83 | qDeleteAll(m_series); |
| @@ -84,12 +86,13 ChartView::~ChartView() | |||
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84 | 86 | //![4] |
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85 | 87 | void ChartView::handleTimeout() |
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86 | 88 | { |
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87 | if(m_series.size()==0) return; | |
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88 | if(m_index>=0) | |
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89 | m_chart->removeSeries(m_series.at(m_index)); | |
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89 | if(m_series.size() == 0) return; | |
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90 | if(m_index >= 0) | |
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91 | m_chart->removeSeries(m_series.at(m_index)); | |
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90 | 92 | m_index++; |
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91 | m_index=m_index%m_series.size(); | |
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93 | m_index = m_index % m_series.size(); | |
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92 | 94 | m_chart->addSeries(m_series.at(m_index)); |
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93 | 95 | m_chart->setTitle(m_titles.at(m_index)); |
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96 | m_chart->createDefaultAxes(); | |
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94 | 97 | } |
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95 | 98 | //![4] |
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