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-/*!
-     \example demos/nesteddonuts
-     \title Nested donuts demo
-     \subtitle
-
-     This example shows how to create a nested donuts chart using the QPieSeries API.
-     \image demos_nesteddonuts.png
-
-     Let's start by creating a QChartView instance and enabling the Antialiasing on it. A QChart object is then obtained from the QChartView instance.
-     The legend is disabled and the title of the chart is set. Last line enables the animations of the chart.
-
-     \snippet ../demos/nesteddonuts/widget.cpp 1
-
-     Three variables are defined that will be used to define the donut chart. Min and max size define the relative size of the whole donut.
-     minSize is the relative inner size of the smallest donut. maxSize is the relative outer size of the biggest donut.
-
-     \snippet ../demos/nesteddonuts/widget.cpp 2
-
-     The following block of code defines the individual donuts and their slices. First a new QPieSeries object is created.
-     The number of slices in each donut is randomized.
-     The internal for loop creates the slices with a random value and label same as the value.
-     Next the label of the slice is set to be visible and its color is set to white.
-     To make the example more interesting the hovered signal of the slice is connected to widget's slot,  of which the inner workings are explained later.
-     Finally the slice is added to the donut. The donut's size is adjusted to achieve the nesting of the donuts.
-     Then the donut is added to the widget's list of donuts and to the chart.
-
-     \snippet ../demos/nesteddonuts/widget.cpp 3
-
-     Finally the widget is placed in a layout used by the application.
-
-     \snippet ../demos/nesteddonuts/widget.cpp 4
-
-     To make the example more interesting the donuts are rotated randomly every 1.25 sec.
-
-     \snippet ../demos/nesteddonuts/widget.cpp 5
-
-     The widget's updatedRotation slot is defined below.
-     It goes through all of the donuts and modifies their current rotation by a random value.
-
-     \snippet ../demos/nesteddonuts/widget.cpp 6
-
-     The earlier mentioned explodeSlice slot code is provided below.
-     If the slice is set to exploded, then stop the timer that controls the donuts rotation.
-     Then the slice's start and end angles are obtained from the slice.
-     To highlight the selected slice all the other donuts that lie outward from the one that contains the selected slice
-     have their start and end angles modified so that they wouldn't "block" the way for the hightlighted slice.
-     If the slice is no longer selected return to the original state.
-
-     \snippet ../demos/nesteddonuts/widget.cpp 7
-*/