##// END OF EJS Templates
removed uitest app - not needed
removed uitest app - not needed

File last commit:

r2233:222c26d04db8
r2235:30ffc71c8c20
Show More
examples-donutbreakdown.qdoc
45 lines | 1.7 KiB | text/plain | TextLexer
/ doc / src / examples-donutbreakdown.qdoc
/*!
\example examples/donutbreakdown
\title Donut chart breakdown example
\subtitle
This example shows how to use create a donut breakdown chart using QPieSeries API.
\image examples_donutbreakdown.png
Let's start by defining some data for the chart.
\snippet ../examples/donutbreakdown/main.cpp 1
Then we create a chart where we add the data. Note that this is our own chart derived from QChart.
\snippet ../examples/donutbreakdown/main.cpp 2
Our own chart works so that in the constructor we create a main series
which aggregates the data provided by the breakdown series. This is the piechart in the center.
\snippet ../examples/donutbreakdown/donutbreakdownchart.cpp 1
When a breakdown series is added the data is used to create a slice in the main series and the
breakdown series itself is used to create a segment of a donut positioned so that it is aligned
with the corresponding slice in the main series.
\snippet ../examples/donutbreakdown/donutbreakdownchart.cpp 2
Here's how the start and end angles for the donut segments are calculated.
\snippet ../examples/donutbreakdown/donutbreakdownchart.cpp 3
Legend markers are customized to show the breakdown percentage and markers for the main level slices are hidden.
\snippet ../examples/donutbreakdown/donutbreakdownchart.cpp 4
Instead the main level slices show the percentage on the label.
\snippet ../examples/donutbreakdown/mainslice.cpp 1
\snippet ../examples/donutbreakdown/mainslice.cpp 2
And now that we have our chart defined we can finally create a QChartView and show the chart.
\snippet ../examples/donutbreakdown/main.cpp 3
*/