CircularControlItem.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;

namespace WpfWorld
{
    [DefaultEvent("Selected")]
    public class CircularControlItem: ListBoxItem
    {
        int _index = 0;


        public new double BorderThickness
        {
            get { return (double)GetValue(BorderThicknessProperty); }
            set { SetValue(BorderThicknessProperty, value); }
        }

        // Using a DependencyProperty as the backing store for StrokeThickniss.  This enables animation, styling, binding, etc...
        public new static readonly DependencyProperty BorderThicknessProperty =
            DependencyProperty.Register("BorderThickness", typeof(double), typeof(CircularControlItem),
                new FrameworkPropertyMetadata(0d, FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsRender));


        public new Brush BorderBrush
        {
            get { return (Brush)GetValue(BorderBrushProperty); }
            set { SetValue(BorderBrushProperty, value); }
        }

        // Using a DependencyProperty as the backing store for BorderBrush.  This enables animation, styling, binding, etc...
        public new static readonly DependencyProperty BorderBrushProperty =
            DependencyProperty.Register("BorderBrush", typeof(Brush), typeof(CircularControlItem),
                new FrameworkPropertyMetadata(Brushes.Transparent, FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsRender));


        public Brush Fill
        {
            get { return (Brush)GetValue(FillProperty); }
            set { SetValue(FillProperty, value); }
        }

        // Using a DependencyProperty as the backing store for Fill.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty FillProperty =
            DependencyProperty.Register("Fill", typeof(Brush), typeof(CircularControlItem),
                new FrameworkPropertyMetadata(Brushes.Transparent, FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsRender));



        public Brush MouseOverFill
        {