Changed map tile download order, added Pushpin class, changed default MapItem style.

MapControl/Map.cs

@@ -42,7 +42,8 @@ namespace MapControl
 
         public static readonly DependencyProperty TileLayersProperty = DependencyProperty.Register(
             "TileLayers", typeof(TileLayerCollection), typeof(Map), new FrameworkPropertyMetadata(
-                (o, e) => ((Map)o).TileLayersPropertyChanged((TileLayerCollection)e.NewValue)));
+                (o, e) => ((Map)o).TileLayersPropertyChanged((TileLayerCollection)e.NewValue),
+                (o, v) => ((Map)o).CoerceTileLayersProperty((TileLayerCollection)v)));
 
         public static readonly DependencyProperty MainTileLayerProperty = DependencyProperty.Register(
             "MainTileLayer", typeof(TileLayer), typeof(Map), new FrameworkPropertyMetadata(
@@ -105,6 +106,7 @@ namespace MapControl
             MinZoomLevel = 1;
             MaxZoomLevel = 20;
             AddVisualChild(tileContainer);
+            TileLayers = new TileLayerCollection();
             SetValue(ParentMapProperty, this);
         }
 
@@ -482,20 +484,29 @@ namespace MapControl
         }
 
         private void TileLayersPropertyChanged(TileLayerCollection tileLayers)
+        {
+            if (tileLayers != null)
             {
                 tileContainer.TileLayers = tileLayers;
                 MainTileLayer = tileLayers.Count > 0 ? tileLayers[0] : null;
             }
+        }
+
+        private TileLayerCollection CoerceTileLayersProperty(TileLayerCollection tileLayers)
+        {
+            if (tileLayers == null)
+            {
+                tileLayers = new TileLayerCollection();
+            }
+
+            return tileLayers;
+        }
 
         private void MainTileLayerPropertyChanged(TileLayer mainTileLayer)
         {
             if (mainTileLayer != null)
             {
-                if (tileContainer.TileLayers == null)
+                if (tileContainer.TileLayers.Count == 0)
-                {
-                    TileLayers = new TileLayerCollection(mainTileLayer);
-                }
-                else if (tileContainer.TileLayers.Count == 0)
                 {
                     tileContainer.TileLayers.Add(mainTileLayer);
                 }
@@ -508,7 +519,7 @@ namespace MapControl
 
         private TileLayer CoerceMainTileLayerProperty(TileLayer mainTileLayer)
         {
-            if (mainTileLayer == null && tileContainer.TileLayers != null && tileContainer.TileLayers.Count > 0)
+            if (mainTileLayer == null && tileContainer.TileLayers.Count > 0)
             {
                 mainTileLayer = tileContainer.TileLayers[0];
             }

MapControl/MapControl.csproj

@@ -53,6 +53,7 @@
     <Compile Include="MapPanel.cs" />
     <Compile Include="MapPolygon.cs" />
     <Compile Include="MapPolyline.cs" />
+    <Compile Include="Pushpin.cs" />
     <Compile Include="TileImageLoader.cs" />
     <Compile Include="MapTransform.cs" />
     <Compile Include="Map.cs" />

MapControl/MapItem.cs

@@ -36,11 +36,11 @@ namespace MapControl
 
         static MapItem()
         {
-            FrameworkElement.DefaultStyleKeyProperty.OverrideMetadata(typeof(MapItem),
+            FrameworkElement.DefaultStyleKeyProperty.OverrideMetadata(
-                new FrameworkPropertyMetadata(typeof(MapItem)));
+                typeof(MapItem), new FrameworkPropertyMetadata(typeof(MapItem)));
 
-            UIElement.IsEnabledProperty.OverrideMetadata(typeof(MapItem),
+            UIElement.IsEnabledProperty.OverrideMetadata(
-                new FrameworkPropertyMetadata((o, e) => ((MapItem)o).CommonStateChanged()));
+                typeof(MapItem), new FrameworkPropertyMetadata((o, e) => ((MapItem)o).CommonStateChanged()));
         }
 
         public event RoutedEventHandler Selected

MapControl/Pushpin.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace MapControl
+{
+    /// <summary>
+    /// Displays a pushpin at the geographic location provided by the Location property.
+    /// </summary>
+    [TemplateVisualState(Name = "Normal", GroupName = "CommonStates")]
+    [TemplateVisualState(Name = "MouseOver", GroupName = "CommonStates")]
+    [TemplateVisualState(Name = "Disabled", GroupName = "CommonStates")]
+    public class Pushpin : ContentControl
+    {
+        public static readonly DependencyProperty LocationProperty = MapPanel.LocationProperty.AddOwner(typeof(Pushpin));
+
+        static Pushpin()
+        {
+            FrameworkElement.DefaultStyleKeyProperty.OverrideMetadata(
+                typeof(Pushpin), new FrameworkPropertyMetadata(typeof(Pushpin)));
+        }
+
+        public Location Location
+        {
+            get { return (Location)GetValue(LocationProperty); }
+            set { SetValue(LocationProperty, value); }
+        }
+    }
+}

MapControl/Themes/Generic.xaml

@@ -11,6 +11,20 @@
         </Setter>
     </Style>
     <Style x:Key="{x:Type map:MapItem}" TargetType="{x:Type map:MapItem}">
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="{x:Type map:MapItem}">
+                    <ContentPresenter Content="{TemplateBinding Content}"
+                                      ContentTemplate="{TemplateBinding ContentTemplate}"
+                                      Cursor="{TemplateBinding Cursor}"
+                                      Margin="{TemplateBinding Padding}"
+                                      HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                      VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+    <Style x:Key="{x:Type map:Pushpin}" TargetType="{x:Type map:Pushpin}">
         <Setter Property="SnapsToDevicePixels" Value="True"/>
         <Setter Property="HorizontalAlignment" Value="Left"/>
         <Setter Property="VerticalAlignment" Value="Bottom"/>
@@ -18,7 +32,7 @@
         <Setter Property="Background" Value="White"/>
         <Setter Property="Template">
             <Setter.Value>
-                <ControlTemplate TargetType="{x:Type map:MapItem}">
+                <ControlTemplate TargetType="{x:Type map:Pushpin}">
                     <Grid>
                         <VisualStateManager.VisualStateGroups>
                             <VisualStateGroup x:Name="CommonStates">
@@ -34,14 +48,6 @@
                                     </Storyboard>
                                 </VisualState>
                             </VisualStateGroup>
-                            <VisualStateGroup x:Name="SelectionStates">
-                                <VisualState x:Name="Unselected"/>
-                                <VisualState x:Name="Selected"/>
-                            </VisualStateGroup>
-                            <VisualStateGroup x:Name="CurrentStates">
-                                <VisualState x:Name="NonCurrent"/>
-                                <VisualState x:Name="Current"/>
-                            </VisualStateGroup>
                         </VisualStateManager.VisualStateGroups>
                         <Grid.RowDefinitions>
                             <RowDefinition/>

MapControl/TileLayer.cs

@@ -8,7 +8,6 @@ using System.Linq;
 using System.Windows;
 using System.Windows.Markup;
 using System.Windows.Media;
-using System.Windows.Media.Animation;
 
 namespace MapControl
 {

MapControl/TileLayerCollection.cs

@@ -12,15 +12,6 @@ namespace MapControl
     {
         private string name;
 
-        public TileLayerCollection()
-        {
-        }
-
-        public TileLayerCollection(TileLayer tileLayer)
-        {
-            Add(tileLayer);
-        }
-
         public string Name
         {
             get { return !string.IsNullOrEmpty(name) ? name : (Count > 0 ? this[0].Name : string.Empty); }

TestApplication/MainWindow.xaml

@@ -13,6 +13,8 @@
         <local:SampleItemStyleSelector x:Key="SampleItemStyleSelector"/>
         <Style x:Key="SamplePushpinItemStyle" TargetType="map:MapItem">
             <Setter Property="map:MapPanel.Location" Value="{Binding Location}"/>
+            <Setter Property="HorizontalAlignment" Value="Left"/>
+            <Setter Property="VerticalAlignment" Value="Bottom"/>
             <Setter Property="Content" Value="{Binding Name}"/>
             <Style.Triggers>
                 <Trigger Property="IsSelected" Value="True">
@@ -22,6 +24,8 @@
         </Style>
         <Style x:Key="SamplePointItemStyle" TargetType="map:MapItem">
             <Setter Property="map:MapPanel.Location" Value="{Binding Location}"/>
+            <Setter Property="HorizontalAlignment" Value="Left"/>
+            <Setter Property="VerticalAlignment" Value="Bottom"/>
             <Setter Property="Template">
                 <Setter.Value>
                     <ControlTemplate TargetType="map:MapItem">
@@ -68,6 +72,8 @@
         </Style>
         <Style x:Key="SampleShapeItemStyle" TargetType="map:MapItem">
             <Setter Property="map:MapPanel.Location" Value="{Binding Location}"/>
+            <Setter Property="HorizontalAlignment" Value="Left"/>
+            <Setter Property="VerticalAlignment" Value="Bottom"/>
             <Setter Property="Template">
                 <Setter.Value>
                     <ControlTemplate TargetType="map:MapItem">
@@ -118,8 +124,6 @@
             </Setter>
         </Style>
         <Style x:Key="SamplePolylineItemStyle" TargetType="map:MapItem">
-            <Setter Property="HorizontalAlignment" Value="Stretch"/>
-            <Setter Property="VerticalAlignment" Value="Stretch"/>
             <Setter Property="Template">
                 <Setter.Value>
                     <ControlTemplate TargetType="map:MapItem">
@@ -129,8 +133,6 @@
             </Setter>
         </Style>
         <Style x:Key="SamplePolygonItemStyle" TargetType="map:MapItem">
-            <Setter Property="HorizontalAlignment" Value="Stretch"/>
-            <Setter Property="VerticalAlignment" Value="Stretch"/>
             <Setter Property="Template">
                 <Setter.Value>
                     <ControlTemplate TargetType="map:MapItem">
@@ -155,6 +157,7 @@
             <map:MapItemsControl ItemsSource="{StaticResource SampleItems}"
                                  ItemContainerStyleSelector="{StaticResource SampleItemStyleSelector}"
                                  IsSynchronizedWithCurrentItem="True"/>
+            <map:Pushpin Location="53.5,8.25" Content="N 53° 30' E 8° 15'"/>
             <TextBlock HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="2,0,0,0" FontSize="10"
                        Text="{Binding ElementName=map, Path=MainTileLayer.Description}"/>
         </map:Map>
@@ -186,12 +189,12 @@
                                        IsCached="False"/>
                         <map:TileLayer Name="MapQuest OSM" Description="MapQuest OSM - © {y} MapQuest &amp; OpenStreetMap Contributors"
                                        TileSource="http://otile{n}.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png"
-                                       IsCached="False" MaxZoomLevel="20"/>
+                                       IsCached="False"/>
                         <!--<map:TileLayer Name="Google Maps" Description="Google Maps - © {y} Google"
                                        TileSource="http://mt{i}.google.com/vt/x={x}&amp;y={y}&amp;z={z}"
                                        IsCached="False" MaxZoomLevel="20"/>
                         <map:TileLayer Name="Google Images" Description="Google Maps - © {y} Google"
-                                       TileSource="http://khm{i}.google.com/kh/v=108&amp;x={x}&amp;y={y}&amp;z={z}"
+                                       TileSource="http://khm{i}.google.com/kh/v=113&amp;x={x}&amp;y={y}&amp;z={z}"
                                        IsCached="False" MaxZoomLevel="20" HasDarkBackground="True"/>
                         <map:TileLayer Name="Bing Maps" Description="Bing Maps - © {y} Microsoft Corporation"
                                        TileSource="http://ecn.t{i}.tiles.virtualearth.net/tiles/r{q}.png?g=0&amp;stl=h"

TestApplication/MainWindow.xaml.cs

@@ -90,7 +90,7 @@ namespace MapControlTestApp
             items.Add(
                 new SampleShape
                 {
-                    Name = "N 53°30' E 8°12'",
+                    Name = "N 53° 30' E 8° 12'",
                     Location = new Location(53.5, 8.2),
                     RadiusX = 200d, // meters
                     RadiusY = 300d, // meters