From 3c907c33458029dde3ea8ed65cc9b2256897d10a Mon Sep 17 00:00:00 2001
From: ClemensFischer <fischer.clemens@gmail.com>
Date: Fri, 24 May 2024 09:13:41 +0200
Subject: [PATCH] Default Map Background

---
 MapControl/Avalonia/DependencyPropertyHelper.Avalonia.cs | 5 ++++-
 MapControl/Avalonia/MapBase.Avalonia.cs                  | 7 ++-----
 MapControl/Shared/MapBase.cs                             | 3 ++-
 MapControl/Shared/MapImageLayer.cs                       | 1 +
 MapControl/Shared/MapTileLayerBase.cs                    | 1 +
 MapControl/WinUI/MapBase.WinUI.cs                        | 1 +
 6 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/MapControl/Avalonia/DependencyPropertyHelper.Avalonia.cs b/MapControl/Avalonia/DependencyPropertyHelper.Avalonia.cs
index 4ce3d97b..3cc08a6b 100644
--- a/MapControl/Avalonia/DependencyPropertyHelper.Avalonia.cs
+++ b/MapControl/Avalonia/DependencyPropertyHelper.Avalonia.cs
@@ -1,4 +1,7 @@
-
+// XAML Map Control - https://github.com/ClemensFischer/XAML-Map-Control
+// Copyright © 2024 Clemens Fischer
+// Licensed under the Microsoft Public License (Ms-PL)
+
 using Avalonia.Controls;
 using System;
 
diff --git a/MapControl/Avalonia/MapBase.Avalonia.cs b/MapControl/Avalonia/MapBase.Avalonia.cs
index a24776e9..58bdbd8b 100644
--- a/MapControl/Avalonia/MapBase.Avalonia.cs
+++ b/MapControl/Avalonia/MapBase.Avalonia.cs
@@ -6,6 +6,7 @@ global using Avalonia;
 using Avalonia.Animation;
 using Avalonia.Animation.Easings;
 using Avalonia.Controls;
+using Avalonia.Media;
 using Avalonia.Styling;
 using System.Threading;
 using System.Threading.Tasks;
@@ -75,16 +76,12 @@ namespace MapControl
 
         static MapBase()
         {
+            BackgroundProperty.OverrideDefaultValue(typeof(MapBase), Brushes.White);
             ClipToBoundsProperty.OverrideDefaultValue(typeof(MapBase), true);
 
             Animation.RegisterCustomAnimator<Location, LocationAnimator>();
         }
 
-        public MapBase()
-        {
-            MapProjectionPropertyChanged(MapProjection);
-        }
-
         internal Size RenderSize => Bounds.Size;
 
         protected override void OnSizeChanged(SizeChangedEventArgs e)
diff --git a/MapControl/Shared/MapBase.cs b/MapControl/Shared/MapBase.cs
index fa85acb6..fc9ef2e1 100644
--- a/MapControl/Shared/MapBase.cs
+++ b/MapControl/Shared/MapBase.cs
@@ -16,6 +16,7 @@ using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Media;
 #elif AVALONIA
 using Avalonia.Media;
+using Brush = Avalonia.Media.IBrush;
 using DependencyProperty = Avalonia.AvaloniaProperty;
 using UIElement = Avalonia.Controls.Control;
 #endif
@@ -60,7 +61,7 @@ namespace MapControl
         private Location transformCenter;
         private Point viewCenter;
         private double centerLongitude;
-        private double maxLatitude = 90d;
+        private double maxLatitude = 85.05112878; // default WebMercatorProjection
         private bool internalPropertyChange;
 
         /// <summary>
diff --git a/MapControl/Shared/MapImageLayer.cs b/MapControl/Shared/MapImageLayer.cs
index caf2cb48..11114b68 100644
--- a/MapControl/Shared/MapImageLayer.cs
+++ b/MapControl/Shared/MapImageLayer.cs
@@ -24,6 +24,7 @@ using DispatcherTimer = Microsoft.UI.Dispatching.DispatcherQueueTimer;
 using Avalonia.Controls;
 using Avalonia.Media;
 using Avalonia.Threading;
+using Brush = Avalonia.Media.IBrush;
 using DependencyProperty = Avalonia.AvaloniaProperty;
 using ImageSource = Avalonia.Media.IImage;
 #endif
diff --git a/MapControl/Shared/MapTileLayerBase.cs b/MapControl/Shared/MapTileLayerBase.cs
index 66b66055..74445a5b 100644
--- a/MapControl/Shared/MapTileLayerBase.cs
+++ b/MapControl/Shared/MapTileLayerBase.cs
@@ -23,6 +23,7 @@ using DispatcherTimer = Microsoft.UI.Dispatching.DispatcherQueueTimer;
 using Avalonia.Controls;
 using Avalonia.Media;
 using Avalonia.Threading;
+using Brush = Avalonia.Media.IBrush;
 using DependencyProperty = Avalonia.AvaloniaProperty;
 #endif
 
diff --git a/MapControl/WinUI/MapBase.WinUI.cs b/MapControl/WinUI/MapBase.WinUI.cs
index 4003d7e7..61ca1747 100644
--- a/MapControl/WinUI/MapBase.WinUI.cs
+++ b/MapControl/WinUI/MapBase.WinUI.cs
@@ -70,6 +70,7 @@ namespace MapControl
         public MapBase()
         {
             // Set Background by Style to enable resetting by ClearValue in MapLayerPropertyChanged.
+            // There is no default Style in Generic.xaml because MapBase has no DefaultStyleKey property.
             //
             var style = new Style(typeof(MapBase));
             style.Setters.Add(new Setter(BackgroundProperty, new SolidColorBrush(Colors.White)));