XAML-Map-Control/MapControl/UWP/MapOverlay.UWP.cs

// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
// © 2017 Clemens Fischer
// Licensed under the Microsoft Public License (Ms-PL)

using Windows.UI.Text;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Media;

namespace MapControl
{
    public partial class MapOverlay
    {
        public static readonly DependencyProperty FontSizeProperty = DependencyProperty.Register(
            nameof(FontSize), typeof(double), typeof(MapOverlay), new PropertyMetadata(10d));

        public static readonly DependencyProperty FontFamilyProperty = DependencyProperty.Register(
            nameof(FontFamily), typeof(FontFamily), typeof(MapOverlay), new PropertyMetadata(null));

        public static readonly DependencyProperty FontStyleProperty = DependencyProperty.Register(
            nameof(FontStyle), typeof(FontStyle), typeof(MapOverlay), new PropertyMetadata(FontStyle.Normal));

        public static readonly DependencyProperty FontStretchProperty = DependencyProperty.Register(
            nameof(FontStretch), typeof(FontStretch), typeof(MapOverlay), new PropertyMetadata(FontStretch.Normal));

        public static readonly DependencyProperty FontWeightProperty = DependencyProperty.Register(
            nameof(FontWeight), typeof(FontWeight), typeof(MapOverlay), new PropertyMetadata(FontWeights.Normal));

        public static readonly DependencyProperty ForegroundProperty = DependencyProperty.Register(
            nameof(Foreground), typeof(Brush), typeof(MapOverlay), new PropertyMetadata(null));

        public static readonly DependencyProperty StrokeProperty = DependencyProperty.Register(
            nameof(Stroke), typeof(Brush), typeof(MapOverlay), new PropertyMetadata(null));

        public static readonly DependencyProperty StrokeThicknessProperty = DependencyProperty.Register(
            nameof(StrokeThickness), typeof(double), typeof(MapOverlay), new PropertyMetadata(1d));

        public static readonly DependencyProperty StrokeDashArrayProperty = DependencyProperty.Register(
            nameof(StrokeDashArray), typeof(DoubleCollection), typeof(MapOverlay), new PropertyMetadata(null));

        public static readonly DependencyProperty StrokeDashOffsetProperty = DependencyProperty.Register(
            nameof(StrokeDashOffset), typeof(double), typeof(MapOverlay), new PropertyMetadata(0d));

        public static readonly DependencyProperty StrokeDashCapProperty = DependencyProperty.Register(
            nameof(StrokeDashCap), typeof(PenLineCap), typeof(MapOverlay), new PropertyMetadata(PenLineCap.Flat));

        public static readonly DependencyProperty StrokeStartLineCapProperty = DependencyProperty.Register(
            nameof(StrokeStartLineCap), typeof(PenLineCap), typeof(MapOverlay), new PropertyMetadata(PenLineCap.Flat));

        public static readonly DependencyProperty StrokeEndLineCapProperty = DependencyProperty.Register(
            nameof(StrokeEndLineCap), typeof(PenLineCap), typeof(MapOverlay), new PropertyMetadata(PenLineCap.Flat));

        public static readonly DependencyProperty StrokeLineJoinProperty = DependencyProperty.Register(
            nameof(StrokeLineJoin), typeof(PenLineJoin), typeof(MapOverlay), new PropertyMetadata(PenLineJoin.Miter));

        public static readonly DependencyProperty StrokeMiterLimitProperty = DependencyProperty.Register(
            nameof(StrokeMiterLimit), typeof(double), typeof(MapOverlay), new PropertyMetadata(1d));

        protected override void SetParentMapOverride(MapBase parentMap)
        {
            if (GetBindingExpression(ForegroundProperty) != null)
            {
                ClearValue(ForegroundProperty);
            }

            if (GetBindingExpression(StrokeProperty) != null)
            {
                ClearValue(StrokeProperty);
            }

            if (parentMap != null)
            {
                if (Foreground == null)
                {
                    SetBinding(ForegroundProperty, new Binding
                    {
                        Source = parentMap,
                        Path = new PropertyPath("Foreground")
                    });
                }

                if (Stroke == null)
                {
                    SetBinding(StrokeProperty, new Binding
                    {
                        Source = parentMap,
                        Path = new PropertyPath("Foreground")
                    });
                }
            }

            base.SetParentMapOverride(parentMap);
        }
    }
}