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1 | /*! | |||
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2 | \example example/presenterchart | |||
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3 | \title PresenterChart Example | |||
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4 | \subtitle | |||
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5 | ||||
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6 | The example shows how to create chart which presents the same set of data as line, scatter and spline charts. | |||
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7 | ChartPresenter will switch between these three chart types every few seconds. | |||
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8 | Please note this example does not use common data model. A use of common data model is documented here.[TODO] | |||
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9 | ||||
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10 | \image presenterchart1.png | |||
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11 | \image presenterchart2.png | |||
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12 | \image presenterchart3.png | |||
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13 | ||||
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14 | We create simple ChartView class which derives form QChartView. | |||
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15 | ||||
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16 | \snippet ../example/presenterchart/chartview.h 1 | |||
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17 | ||||
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18 | Class will implement \c handleTimeout() slot which we are going to use to trigger switching between different chart presentations. | |||
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19 | Class members \c m_series and \c m_titles are going to store series and related titles. In example we are going to present data as a line chart | |||
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20 | using QLineSeries , as scatter chart using QScatterSeries, and as a spline chart using QSplineSeries. We create needed instances in constructor of ChartView class. | |||
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21 | We set custom line and points colors. | |||
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22 | ||||
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23 | \snippet ../example/presenterchart/chartview.cpp 1 | |||
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24 | ||||
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25 | We add data to all three series. We can use add() member function. If data set is large,it is wiser to use shared data model, as described here.[TODO] | |||
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26 | ||||
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27 | \snippet ../example/presenterchart/chartview.cpp 2 | |||
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28 | ||||
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29 | In the end we store references all the created series and matching titles. | |||
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30 | ||||
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31 | \snippet ../example/presenterchart/chartview.cpp 3 | |||
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32 | ||||
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33 | 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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34 | ||||
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35 | \snippet ../example/presenterchart/chartview.cpp 4 | |||
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36 | ||||
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37 | */ No newline at end of file |
@@ -22,6 +22,7 extraimages.HTML = qt_commercial_logo.png \ | |||||
22 | bullet_sq.png \ |
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22 | bullet_sq.png \ | |
23 | bullet_up.png \ |
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23 | bullet_up.png \ | |
24 | horBar.png \ |
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24 | horBar.png \ | |
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25 | presenterchart_example.png \ | |||
25 | bg.png |
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26 | bg.png | |
26 |
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27 | |||
27 |
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28 |
@@ -15,13 +15,14 | |||||
15 | <ul> |
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15 | <ul> | |
16 | <li><a href="example-areachart.html">Area Chart example</a></li> |
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16 | <li><a href="example-areachart.html">Area Chart example</a></li> | |
17 | <li><a href="example-barchart.html">Bar Chart example</a></li> |
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17 | <li><a href="example-barchart.html">Bar Chart example</a></li> | |
18 | <li><a href="example-stackedbarchart.html">Stacked Bar Chart example</a></li> |
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19 | <li><a href="example-percentbarchart.html">Percent Bar Chart example</a></li> |
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20 | <li><a href="example-scatterchart.html">Scatter Chart example</a></li> |
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21 | <li><a href="example-stackedbarchartdrilldown.html">Stacked Bar Chart Drilldown example</a></li> |
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22 | <li><a href="example-linechart.html">Line Chart example</a></li> |
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18 | <li><a href="example-linechart.html">Line Chart example</a></li> | |
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19 | <li><a href="example-percentbarchart.html">Percent Bar Chart example</a></li> | |||
23 | <li><a href="example-piechart.html">Pie Chart example</a></li> |
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20 | <li><a href="example-piechart.html">Pie Chart example</a></li> | |
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21 | <li><a href="example-presenterchart.html">Presenter Chart example</a></li> | |||
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22 | <li><a href="example-scatterchart.html">Scatter Chart example</a></li> | |||
24 | <li><a href="example-splinechart.html">Spline Chart example</a></li> |
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23 | <li><a href="example-splinechart.html">Spline Chart example</a></li> | |
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24 | <li><a href="example-stackedbarchart.html">Stacked Bar Chart example</a></li> | |||
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25 | <li><a href="example-stackedbarchartdrilldown.html">Stacked Bar Chart Drilldown example</a></li> | |||
25 | </ul> |
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26 | </ul> | |
26 | </td> |
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27 | </td> | |
27 | </tr> |
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28 | </tr> |
@@ -35,6 +35,7 | |||||
35 | </tr> |
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35 | </tr> | |
36 | <tr> |
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36 | <tr> | |
37 |
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37 | <td><img src="images/chartview_example.jpg " alt="linechart" /></td> | |
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38 | <td><a href="example-presenterchart.html"><img src="images/presenterchart_example.png" alt="presenterchart" /></a></td> | |||
38 | </tr> |
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39 | </tr> | |
39 | </table> |
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40 | </table> | |
40 | </div> |
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41 | </div> |
@@ -7,28 +7,32 | |||||
7 | ChartView::ChartView(QWidget* parent):QChartView(parent), |
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7 | ChartView::ChartView(QWidget* parent):QChartView(parent), | |
8 | m_index(0) |
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8 | m_index(0) | |
9 | { |
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9 | { | |
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10 | QTime now = QTime::currentTime(); | |||
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11 | qsrand((uint)now.msec()); | |||
10 | setChartTitle("Three random line charts"); |
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12 | setChartTitle("Three random line charts"); | |
11 |
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13 | |||
12 | QObject::connect(&m_timer,SIGNAL(timeout()),this,SLOT(handleTimeout())); |
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14 | QObject::connect(&m_timer,SIGNAL(timeout()),this,SLOT(handleTimeout())); | |
13 | m_timer.setInterval(3000); |
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15 | m_timer.setInterval(3000); | |
14 |
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16 | |||
15 | QTime now = QTime::currentTime(); |
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17 | //![1] | |
16 | qsrand((uint)now.msec()); |
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17 |
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18 | QLineSeries* series0 = new QLineSeries(this); |
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18 | QLineSeries* series0 = new QLineSeries(this); | |
19 | QPen blue(Qt::blue); |
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19 | QPen blue(Qt::blue); | |
20 | blue.setWidth(3); |
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20 | blue.setWidth(3); | |
21 | series0->setPen(blue); |
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21 | series0->setPen(blue); | |
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22 | ||||
22 | QScatterSeries* series1 = new QScatterSeries(this); |
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23 | QScatterSeries* series1 = new QScatterSeries(this); | |
23 | QPen red(Qt::red); |
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24 | QPen red(Qt::red); | |
24 | red.setWidth(3); |
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25 | red.setWidth(3); | |
25 | series1->setPen(red); |
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26 | series1->setPen(red); | |
26 | series1->setBrush(Qt::white); |
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27 | series1->setBrush(Qt::white); | |
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28 | ||||
27 | QSplineSeries* series2 = new QSplineSeries(this); |
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29 | QSplineSeries* series2 = new QSplineSeries(this); | |
28 | QPen green(Qt::green); |
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30 | QPen green(Qt::green); | |
29 | green.setWidth(3); |
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31 | green.setWidth(3); | |
30 | series2->setPen(green); |
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32 | series2->setPen(green); | |
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33 | //![1] | |||
31 |
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34 | |||
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35 | //![2] | |||
32 | int numPoints = 10; |
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36 | int numPoints = 10; | |
33 |
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37 | |||
34 | for (int x = 0; x <= numPoints; ++x) { |
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38 | for (int x = 0; x <= numPoints; ++x) { | |
@@ -37,14 +41,16 m_index(0) | |||||
37 | series1->add(x,y); |
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41 | series1->add(x,y); | |
38 | series2->add(x,y); |
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42 | series2->add(x,y); | |
39 | } |
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43 | } | |
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44 | //![2] | |||
40 |
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45 | |||
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46 | //![3] | |||
41 | m_series<<series0; |
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47 | m_series<<series0; | |
42 | m_titles<<chartTitle()+": LineChart"; |
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48 | m_titles<<chartTitle()+": LineChart"; | |
43 | m_series<<series1; |
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49 | m_series<<series1; | |
44 | m_titles<<chartTitle()+": ScatterChart"; |
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50 | m_titles<<chartTitle()+": ScatterChart"; | |
45 | m_series<<series2; |
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51 | m_series<<series2; | |
46 | m_titles<<chartTitle()+": SplineChart"; |
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52 | m_titles<<chartTitle()+": SplineChart"; | |
47 |
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53 | //![3] | ||
48 | addSeries(series0); |
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54 | addSeries(series0); | |
49 | setChartTitle(m_titles.at(0)); |
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55 | setChartTitle(m_titles.at(0)); | |
50 |
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56 | |||
@@ -58,13 +64,14 ChartView::~ChartView() | |||||
58 | qDeleteAll(m_series); |
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64 | qDeleteAll(m_series); | |
59 | } |
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65 | } | |
60 |
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66 | |||
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67 | //![4] | |||
61 | void ChartView::handleTimeout() |
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68 | void ChartView::handleTimeout() | |
62 | { |
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69 | { | |
63 | if(m_series.size()==0) return; |
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70 | if(m_series.size()==0) return; | |
64 |
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65 | removeSeries(m_series.at(m_index)); |
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71 | removeSeries(m_series.at(m_index)); | |
66 | m_index++; |
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72 | m_index++; | |
67 | m_index=m_index%m_series.size(); |
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73 | m_index=m_index%m_series.size(); | |
68 | addSeries(m_series.at(m_index)); |
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74 | addSeries(m_series.at(m_index)); | |
69 | setChartTitle(m_titles.at(m_index)); |
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75 | setChartTitle(m_titles.at(m_index)); | |
70 | } |
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76 | } | |
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77 | //![4] |
@@ -6,6 +6,7 | |||||
6 |
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6 | |||
7 | QTCOMMERCIALCHART_USE_NAMESPACE |
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7 | QTCOMMERCIALCHART_USE_NAMESPACE | |
8 |
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8 | |||
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9 | //![1] | |||
9 | class ChartView: public QChartView |
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10 | class ChartView: public QChartView | |
10 | { |
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11 | { | |
11 | Q_OBJECT |
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12 | Q_OBJECT | |
@@ -22,5 +23,6 private: | |||||
22 | QStringList m_titles; |
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23 | QStringList m_titles; | |
23 | int m_index; |
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24 | int m_index; | |
24 | }; |
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25 | }; | |
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26 | //![1] | |||
25 |
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27 | |||
26 | #endif /* CHARTVIEW_H_ */ |
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28 | #endif /* CHARTVIEW_H_ */ |
@@ -1,6 +1,6 | |||||
1 | !include( ../example.pri ) { |
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1 | !include( ../example.pri ) { | |
2 | error( "Couldn't find the example.pri file!" ) |
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2 | error( "Couldn't find the example.pri file!" ) | |
3 | } |
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3 | } | |
4 |
TARGET = presenter |
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4 | TARGET = presenterchart | |
5 | HEADERS += chartview.h |
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5 | HEADERS += chartview.h | |
6 | SOURCES += main.cpp chartview.cpp No newline at end of file |
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6 | SOURCES += main.cpp chartview.cpp |
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