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More examples on QChartView qdoc
Tero Ahola -
r321:13ac9d78995f
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@@ -3,6 +3,11
3 3 #include <qchartglobal.h>
4 4 #include <qchartview.h>
5 5 #include <qlinechartseries.h>
6 #include <qscatterseries.h>
7 #include <qbarchartseries.h>
8 #include <qbarset.h>
9 #include <qbarcategory.h>
10 #include <qpieseries.h>
6 11
7 12 QTCOMMERCIALCHART_USE_NAMESPACE
8 13
@@ -13,26 +18,54 int main(int argc, char *argv[])
13 18 //! [1]
14 19 // Create chart view
15 20 QChartView *chartView = new QChartView();
16 chartView->setChartTheme(QChart::ChartThemeIcy);
21 // Add series to the chart
22 QLineChartSeries *line = new QLineChartSeries();
23 line->add(0.0, 0.8);
24 line->add(1.1, 1.1);
25 line->add(2.0, 2.5);
26 chartView->addSeries(line);
17 27 //! [1]
18 28
19 29 //! [2]
20 // Add series to the chart
21 QLineChartSeries *series = new QLineChartSeries();
22 series->add(0.0, 0.8);
23 series->add(1.1, 1.1);
24 series->add(1.6, 1.8);
25 series->add(2.0, 2.5);
26 chartView->addSeries(series);
30 // Change theme
31 chartView->setChartTheme(QChart::ChartThemeScientific);
27 32 //! [2]
28 33
29 34 //! [3]
30 // Change theme
31 chartView->setChartTheme(QChart::ChartThemeScientific);
35 // Add pie series
36 QPieSeries *pie = new QPieSeries();
37 pie->add(3.4, "slice1");
38 pie->add(6.7, "slice2");
39 chartView->addSeries(pie);
32 40 //! [3]
33 41
42 //! [4]
43 // Add scatter series
44 QScatterSeries *scatter = new QScatterSeries();
45 for (qreal x(0); x < 100; x += 0.5) {
46 qreal y = rand() % 100;
47 *(scatter) << QPointF(x, y);
48 }
49 chartView->addSeries(scatter);
50 //! [4]
51
52 //! [5]
53 // Add bar series
54 QBarCategory *barCategory = new QBarCategory();
55 *barCategory << "Jan"
56 << "Feb"
57 << "Mar";
58 QBarChartSeries *bar = new QBarChartSeries(barCategory);
59 QBarSet *barSet = new QBarSet("Sales");
60 *barSet << 123.2
61 << 301.3
62 << 285.8;
63 bar->addBarSet(barSet);
64 chartView->addSeries(bar);
65 //! [5]
66
34 67 QMainWindow w;
35 w.resize(640, 480);
68 w.resize(350, 250);
36 69 w.setCentralWidget(chartView);
37 70 w.show();
38 71
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@@ -57,7 +57,7 ChartTheme* ChartTheme::createTheme(QChart::ChartTheme theme)
57 57 {
58 58 switch(theme) {
59 59 case QChart::ChartThemeDefault:
60 return new ChartTheme();
60 return new ChartThemeIcy();
61 61 case QChart::ChartThemeVanilla:
62 62 return new ChartThemeVanilla();
63 63 case QChart::ChartThemeIcy:
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@@ -22,20 +22,30
22 22 \class QChartView
23 23 \brief Standalone charting widget.
24 24
25 QChartView is a standalone widget that can display charts. It does not require separate QGraphicsScene to work. It manages the graphical
26 representation of different types of QChartSeries and other chart related objects like
27 QChartAxis and QChartLegend. If you want to display a chart in your existing QGraphicsScene, you can use the QChart class instead.
25 QChartView is a standalone widget that can display charts. It does not require separate
26 QGraphicsScene to work. It manages the graphical representation of different types of
27 QChartSeries and other chart related objects like QChartAxis and QChartLegend. If you want to
28 display a chart in your existing QGraphicsScene, you can use the QChart class instead.
28 29
29 For example, to create an empty chart in a widget based application:
30 For example, to create a chart with line series using a widget based application:
30 31 \snippet ../example/chartview/main.cpp 1
31 32 \image chartview_example.jpg
32 33
33 To add a line series:
34 \snippet ../example/chartview/main.cpp 2
35 \image chartview_example_series.jpg
36
37 To modify the visual appearance of the chart, you can use the pre-defined themes:
34 Showing a few more series:
38 35 \snippet ../example/chartview/main.cpp 3
36 \codeline
37 \snippet ../example/chartview/main.cpp 4
38 \codeline
39 \snippet ../example/chartview/main.cpp 5
40
41 And the corresponding results:
42 \image chartview_example_pie.jpg
43 \image chartview_example_scatter.jpg
44 \image chartview_example_bar.jpg
45
46 If you need to give a more professional touch to your chart you can switch to one of the
47 pre-defined themes:
48 \snippet ../example/chartview/main.cpp 2
39 49 \image chartview_example_theme.jpg
40 50
41 51 \sa QChart
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