From 7672c646b87d2a25c69b06f5d318104b5eb3e527 Mon Sep 17 00:00:00 2001
From: Hamish Duff <hduff@esri.com>
Date: Tue, 9 Jan 2024 09:03:43 -0800
Subject: [PATCH 1/7] improve dark mode handling of MAUI + UWP + WinUI

---
 .../Toolkit.SampleApp.Maui/MainPage.xaml      |  10 +-
 .../Toolkit.SampleApp.UWP/MainPage.xaml       |   6 +-
 .../Toolkit.SampleApp.WinUI/MainWindow.xaml   |   6 +-
 .../ByteArrayToImageSourceConverter.cs        |  11 +-
 .../Esri.ArcGISRuntime.Toolkit.Maui.csproj    |   4 +-
 .../BasemapGallery.Resources.xaml             |  26 ++
 .../Toolkit.WinUI/Assets/BasemapDark.png      | Bin 0 -> 3222 bytes
 .../Toolkit.WinUI/Assets/BasemapLight.png     | Bin 0 -> 1998 bytes
 .../BasemapGallery.Resources.xaml             | 271 ++++++++++++++++++
 .../BasemapGallery/BasemapGallery.Theme.xaml  |  27 +-
 10 files changed, 323 insertions(+), 38 deletions(-)
 create mode 100644 src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
 create mode 100644 src/Toolkit/Toolkit.WinUI/Assets/BasemapDark.png
 create mode 100644 src/Toolkit/Toolkit.WinUI/Assets/BasemapLight.png
 create mode 100644 src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml

diff --git a/src/Samples/Toolkit.SampleApp.Maui/MainPage.xaml b/src/Samples/Toolkit.SampleApp.Maui/MainPage.xaml
index 83f1bd03f..cda781e68 100644
--- a/src/Samples/Toolkit.SampleApp.Maui/MainPage.xaml
+++ b/src/Samples/Toolkit.SampleApp.Maui/MainPage.xaml
@@ -11,8 +11,8 @@
             </ListView.ItemTemplate>
         </ListView>
 
-        <Border  x:Name="ApiKeyWindow" Background="#ccffffff" IsVisible="false">
-            <Grid HorizontalOptions="Center" VerticalOptions="Center" Background="White">
+        <Border  x:Name="ApiKeyWindow" Background="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource Gray600}}" IsVisible="false">
+            <Grid HorizontalOptions="Center" VerticalOptions="Center">
                 <Grid.RowDefinitions>
                     <RowDefinition Height="Auto" />
                     <RowDefinition />
@@ -31,13 +31,13 @@
                         <Label Text="Enter API Key:" Margin="0,10,0,5" />
                         <Entry x:Name="ApiKeyInput" MaximumWidthRequest="475" />
                         <Button HorizontalOptions="End" Text="Save" Padding="20,5" 
-                                Background="CornflowerBlue" TextColor="White" BorderColor="White"
+                                Background="CornflowerBlue" TextColor="White"
                                 Clicked="SaveApiKey_Click" />
                         <Label MaxLines="5" Margin="0,10,0,0" >
                             <Label.FormattedText>
                                 <FormattedString>
                                     <Span Text="You can get or create an API key from " />
-                                    <Span Text="your developer dashboard" TextDecorations="Underline" TextColor="Blue" >
+                                    <Span Text="your developer dashboard" TextDecorations="Underline" TextColor="{AppThemeBinding Light={StaticResource Blue100Accent}, Dark={StaticResource Blue300Accent}}" >
                                         <Span.GestureRecognizers>
                                             <TapGestureRecognizer Tapped="DashboardLinkTapped" />
                                         </Span.GestureRecognizers>
@@ -46,7 +46,7 @@
                                 </FormattedString>
                             </Label.FormattedText>
                         </Label>
-                        <Label MaxLines="5" Margin="0,10,0,0" TextDecorations="Underline" TextColor="Blue" Text="More info on API Keys">
+                        <Label MaxLines="5" Margin="0,10,0,0" TextDecorations="Underline" TextColor="{AppThemeBinding Light={StaticResource Blue100Accent}, Dark={StaticResource Blue300Accent}}" Text="More info on API Keys">
                             <Label.GestureRecognizers>
                                 <TapGestureRecognizer Tapped="MoreInfoLinkTapped" />
                             </Label.GestureRecognizers>
diff --git a/src/Samples/Toolkit.SampleApp.UWP/MainPage.xaml b/src/Samples/Toolkit.SampleApp.UWP/MainPage.xaml
index 388167c49..9af5a9dd4 100644
--- a/src/Samples/Toolkit.SampleApp.UWP/MainPage.xaml
+++ b/src/Samples/Toolkit.SampleApp.UWP/MainPage.xaml
@@ -48,8 +48,8 @@
                 <Frame x:Name="rootFrame" Background="{ThemeResource ApplicationForegroundThemeBrush}" />
 
 
-                <Border  x:Name="ApiKeyWindow" Background="#ccffffff" d:Visibility="Visible" Visibility="Collapsed">
-                    <Grid HorizontalAlignment="Center" VerticalAlignment="Center" Background="White">
+                <Border  x:Name="ApiKeyWindow" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" d:Visibility="Visible" Visibility="Collapsed">
+                    <Grid HorizontalAlignment="Center" VerticalAlignment="Center">
                         <Grid.RowDefinitions>
                             <RowDefinition Height="Auto" />
                             <RowDefinition />
@@ -68,7 +68,7 @@
                                 <TextBlock Text="Enter API Key:" Margin="0,10,0,5" />
                                 <TextBox x:Name="ApiKeyInput" Width="475" />
                                 <Button HorizontalAlignment="Right" Content="Save" Padding="20,5" 
-                                Background="CornflowerBlue" Foreground="White" BorderBrush="White"
+                                Background="CornflowerBlue" Foreground="White"
                                 Click="SaveApiKey_Click" />
                                 <TextBlock TextWrapping="Wrap" Margin="0,10,0,0">
                             <Span>You can get or create an API key from <Hyperlink NavigateUri="https://developers.arcgis.com/api-keys/">your developer dashboard</Hyperlink>.</Span><LineBreak></LineBreak>
diff --git a/src/Samples/Toolkit.SampleApp.WinUI/MainWindow.xaml b/src/Samples/Toolkit.SampleApp.WinUI/MainWindow.xaml
index 40df81cca..5638f02bf 100644
--- a/src/Samples/Toolkit.SampleApp.WinUI/MainWindow.xaml
+++ b/src/Samples/Toolkit.SampleApp.WinUI/MainWindow.xaml
@@ -41,8 +41,8 @@
                     <local:WelcomePage />
                 </Frame>
 
-                <Border  x:Name="ApiKeyWindow" Background="#ccffffff" d:Visibility="Visible" Visibility="Collapsed">
-                    <Grid HorizontalAlignment="Center" VerticalAlignment="Center" Background="White">
+                <Border  x:Name="ApiKeyWindow" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" d:Visibility="Visible" Visibility="Collapsed">
+                    <Grid HorizontalAlignment="Center" VerticalAlignment="Center">
                         <Grid.RowDefinitions>
                             <RowDefinition Height="Auto" />
                             <RowDefinition />
@@ -61,7 +61,7 @@
                                 <TextBlock Text="Enter API Key:" Margin="0,10,0,5" />
                                 <TextBox x:Name="ApiKeyInput" Width="475" />
                                 <Button HorizontalAlignment="Right" Content="Save" Padding="20,5" 
-                                Background="CornflowerBlue" Foreground="White" BorderBrush="White"
+                                Background="CornflowerBlue" Foreground="White"
                                 Click="SaveApiKey_Click" />
                                 <TextBlock TextWrapping="Wrap" Margin="0,10,0,0">
                             <Span>You can get or create an API key from <Hyperlink NavigateUri="https://developers.arcgis.com/api-keys/">your developer dashboard</Hyperlink>.</Span><LineBreak></LineBreak>
diff --git a/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs b/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs
index c596e66c1..3f053400c 100644
--- a/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs
+++ b/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs
@@ -14,6 +14,7 @@
 //  *   limitations under the License.
 //  ******************************************************************************/
 
+using Microsoft.Maui.ApplicationModel;
 using System.Globalization;
 
 namespace Esri.ArcGISRuntime.Toolkit.Maui;
@@ -30,8 +31,14 @@ internal class ByteArrayToImageSourceConverter : IValueConverter
             return ImageSource.FromStream(() => new MemoryStream(rawBuffer));
         }
 
-        // Return the placeholder image directly rather than null to work around bugs/limitations in MAUI
-        return ImageSource.FromResource("Esri.ArcGISRuntime.Toolkit.Maui.Assets.BasemapLight.png", typeof(BasemapGallery).Assembly); ;
+        AppTheme currentTheme = Application.Current.RequestedTheme;
+
+        if (currentTheme == AppTheme.Dark)
+        {
+            return ImageSource.FromFile("basemapdark.png");
+        }
+
+        return ImageSource.FromFile("basemaplight.png");
     }
 
     /// <inheritdoc/>
diff --git a/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj b/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj
index 0162ce87d..643ae74eb 100644
--- a/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj
+++ b/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj
@@ -19,8 +19,8 @@
 
     <ItemGroup>
       <EmbeddedResource Include="..\Toolkit\LocalizedStrings\Resources.resx" Link="LocalizedStrings\Resources.resx" />
-      <EmbeddedResource Include="Assets\BasemapDark.png" />
-      <EmbeddedResource Include="Assets\BasemapLight.png" />
+      <MauiImage Include="Assets\basemapdark.png" />
+      <MauiImage Include="Assets\basemaplight.png" />
       <MauiFont Include="Resources\Fonts\calcite-ui-icons-24.ttf" />
       <EmbeddedResource Include="Assets\caret-down-small.png" />
       <EmbeddedResource Include="Assets\caret-down.png" />
diff --git a/src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml b/src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
new file mode 100644
index 000000000..577085720
--- /dev/null
+++ b/src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
@@ -0,0 +1,26 @@
+<ResourceDictionary 
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <ResourceDictionary.ThemeDictionaries>
+        <ResourceDictionary x:Key="Light">
+            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#6a6a6a" />
+            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#151515" />
+            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#007ac2" />
+            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#e2f1fb" />
+            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#f3f3f3" />
+            <SolidColorBrush x:Key="ControlBackground" Color="#fff" />
+            <SolidColorBrush x:Key="ControlBorder" Color="#cacaca" />
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.UWP/Assets/BasemapLight.png" />
+        </ResourceDictionary>
+        <ResourceDictionary x:Key="Dark">
+            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#ffffff" />
+            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#ffffff" />
+            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#009af2" />
+            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#202020" />
+            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#2B2B2B" />
+            <SolidColorBrush x:Key="ControlBackground" Color="#353535" />
+            <SolidColorBrush x:Key="ControlBorder" Color="#555555" />
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.UWP/Assets/BasemapDark.png" />
+        </ResourceDictionary>
+    </ResourceDictionary.ThemeDictionaries>
+</ResourceDictionary>
diff --git a/src/Toolkit/Toolkit.WinUI/Assets/BasemapDark.png b/src/Toolkit/Toolkit.WinUI/Assets/BasemapDark.png
new file mode 100644
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diff --git a/src/Toolkit/Toolkit.WinUI/Assets/BasemapLight.png b/src/Toolkit/Toolkit.WinUI/Assets/BasemapLight.png
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diff --git a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
new file mode 100644
index 000000000..137b9b84b
--- /dev/null
+++ b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
@@ -0,0 +1,271 @@
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:basemapgallery="using:Esri.ArcGISRuntime.Toolkit.UI.Controls"
+    xmlns:controls="using:Esri.ArcGISRuntime.Toolkit.UI.Controls">
+    <ResourceDictionary.ThemeDictionaries>
+        <ResourceDictionary x:Key="Light">
+            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#6a6a6a" />
+            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#151515" />
+            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#007ac2" />
+            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#e2f1fb" />
+            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#f3f3f3" />
+            <SolidColorBrush x:Key="ControlBackground" Color="#fff" />
+            <SolidColorBrush x:Key="ControlBorder" Color="#cacaca" />
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.WinUI/Assets/BasemapLight.png" />
+        </ResourceDictionary>
+        <ResourceDictionary x:Key="Dark">
+            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#ffffff" />
+            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#ffffff" />
+            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#009af2" />
+            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#202020" />
+            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#2B2B2B" />
+            <SolidColorBrush x:Key="ControlBackground" Color="#353535" />
+            <SolidColorBrush x:Key="ControlBorder" Color="#555555" />
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.WinUI/Assets/BasemapDark.png" />
+        </ResourceDictionary>
+    </ResourceDictionary.ThemeDictionaries>
+    <Style x:Key="BaseContainerStyle" TargetType="ListViewItem">
+        <Setter Property="HorizontalAlignment" Value="Stretch" />
+        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
+        <Setter Property="Foreground" Value="{ThemeResource ItemTextForegroundUnselected}" />
+        <Setter Property="Padding" Value="0" />
+        <Setter Property="BorderThickness" Value="3,0,0,0" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="ListViewItem">
+                    <Grid
+                        x:Name="ContentBorder"
+                        Margin="{TemplateBinding Padding}"
+                        HorizontalAlignment="Stretch"
+                        Background="Transparent"
+                        BorderBrush="Transparent"
+                        BorderThickness="{TemplateBinding BorderThickness}">
+                        <Grid
+                            x:Name="ContentPresenterGrid"
+                            HorizontalAlignment="Stretch"
+                            VerticalAlignment="Top"
+                            Background="Transparent">
+                            <ContentPresenter
+                                x:Name="ContentPresenter"
+                                HorizontalAlignment="Stretch"
+                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
+                                HorizontalContentAlignment="Stretch"
+                                Content="{TemplateBinding Content}"
+                                ContentTemplate="{TemplateBinding ContentTemplate}"
+                                ContentTransitions="{TemplateBinding ContentTransitions}"
+                                Foreground="{TemplateBinding Foreground}" />
+                            <Border
+                                x:Name="ContentDisabledScrim"
+                                HorizontalAlignment="Stretch"
+                                VerticalAlignment="Stretch"
+                                Background="{ThemeResource ControlBackground}"
+                                IsHitTestVisible="false"
+                                Opacity="0" />
+                        </Grid>
+
+                        <VisualStateManager.VisualStateGroups>
+                            <VisualStateGroup x:Name="CommonStates">
+                                <VisualState x:Name="Normal" />
+                                <VisualState x:Name="PointerOver">
+                                    <Storyboard>
+                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="Background">
+                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource HoverBackgroundBrush}" />
+                                        </ObjectAnimationUsingKeyFrames>
+                                    </Storyboard>
+                                </VisualState>
+                                <VisualState x:Name="Pressed" />
+                                <VisualState x:Name="Selected">
+                                    <Storyboard>
+                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="Background">
+                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBackgroundBrush}" />
+                                        </ObjectAnimationUsingKeyFrames>
+                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="BorderBrush">
+                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBorderBrush}" />
+                                        </ObjectAnimationUsingKeyFrames>
+                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
+                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ItemTextForegroundSelected}" />
+                                        </ObjectAnimationUsingKeyFrames>
+                                    </Storyboard>
+                                </VisualState>
+                                <VisualState x:Name="PointerOverSelected">
+                                    <Storyboard>
+                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="Background">
+                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBackgroundBrush}" />
+                                        </ObjectAnimationUsingKeyFrames>
+                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="BorderBrush">
+                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBorderBrush}" />
+                                        </ObjectAnimationUsingKeyFrames>
+                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
+                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ItemTextForegroundSelected}" />
+                                        </ObjectAnimationUsingKeyFrames>
+                                    </Storyboard>
+                                </VisualState>
+                                <VisualState x:Name="PressedSelected" />
+                            </VisualStateGroup>
+                            <VisualStateGroup x:Name="DisabledStates">
+                                <VisualState x:Name="Enabled" />
+                                <VisualState x:Name="Disabled">
+                                    <Storyboard>
+                                        <DoubleAnimation
+                                            Storyboard.TargetName="ContentDisabledScrim"
+                                            Storyboard.TargetProperty="Opacity"
+                                            To="{ThemeResource ListViewItemDisabledThemeOpacity}"
+                                            Duration="0" />
+                                    </Storyboard>
+                                </VisualState>
+                            </VisualStateGroup>
+                        </VisualStateManager.VisualStateGroups>
+                    </Grid>
+                </ControlTemplate>
+
+            </Setter.Value>
+        </Setter>
+    </Style>
+    <Style
+        x:Key="GridContainerStyle"
+        BasedOn="{StaticResource BaseContainerStyle}"
+        TargetType="ListViewItem">
+        <Setter Property="Margin" Value="3,9,3,9" />
+        <Setter Property="BorderThickness" Value="1" />
+    </Style>
+    <Style TargetType="controls:BasemapGallery">
+        <Setter Property="Background" Value="{ThemeResource ControlBackground}" />
+        <Setter Property="GridItemTemplate">
+            <Setter.Value>
+                <DataTemplate>
+                    <StackPanel
+                        MaxWidth="128"
+                        Background="Transparent"
+                        Orientation="Vertical"
+                        ToolTipService.ToolTip="{Binding Tooltip}">
+                        <Border
+                            Width="64"
+                            Height="64"
+                            Margin="8"
+                            BorderBrush="#4d6e6e6e"
+                            BorderThickness="1">
+                            <Grid>
+
+                                <Image
+                                    Width="32"
+                                    Height="32"
+                                    HorizontalAlignment="Center"
+                                    VerticalAlignment="Center"
+                                    Source="{ThemeResource BasemapPlaceholder}" />
+                                <Image
+                                    Width="62"
+                                    Height="62"
+                                    Opacity="1"
+                                    Source="{Binding ThumbnailBitmap, Mode=OneWay}"
+                                    Stretch="UniformToFill" />
+                            </Grid>
+                        </Border>
+                        <TextBlock
+                            x:Name="ItemTextBlock"
+                            MinHeight="32"
+                            Margin="8,0,8,8"
+                            FontSize="11"
+                            Text="{Binding Name}"
+                            TextAlignment="Center"
+                            TextWrapping="Wrap" />
+                    </StackPanel>
+                </DataTemplate>
+            </Setter.Value>
+        </Setter>
+        <Setter Property="ListItemTemplate">
+            <Setter.Value>
+                <DataTemplate>
+                    <Grid
+                        Padding="6"
+                        HorizontalAlignment="Stretch"
+                        Background="Transparent"
+                        ToolTipService.ToolTip="{Binding Tooltip}">
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="Auto" />
+                            <ColumnDefinition Width="*" />
+                        </Grid.ColumnDefinitions>
+                        <Border
+                            Width="64"
+                            Height="64"
+                            Margin="0,0,6,0"
+                            BorderBrush="#4d6e6e6e"
+                            BorderThickness="1">
+                            <Grid>
+
+                                <Image
+                                    Width="32"
+                                    Height="32"
+                                    HorizontalAlignment="Center"
+                                    VerticalAlignment="Center"
+                                    Source="{ThemeResource BasemapPlaceholder}" />
+                                <Image
+                                    Width="62"
+                                    Height="62"
+                                    Source="{Binding ThumbnailBitmap, Mode=OneWay}"
+                                    Stretch="UniformToFill" />
+                            </Grid>
+                        </Border>
+                        <TextBlock
+                            x:Name="ItemTextBlock"
+                            Grid.Column="1"
+                            VerticalAlignment="Center"
+                            Text="{Binding Name, Mode=OneWay}"
+                            TextWrapping="Wrap" />
+                    </Grid>
+                </DataTemplate>
+            </Setter.Value>
+        </Setter>
+        <Setter Property="ListItemContainerStyle" Value="{StaticResource BaseContainerStyle}" />
+        <Setter Property="GridItemContainerStyle" Value="{StaticResource GridContainerStyle}" />
+        <Setter Property="HorizontalAlignment" Value="Stretch" />
+        <Setter Property="VerticalAlignment" Value="Stretch" />
+        <Setter Property="Padding" Value="0" />
+        <Setter Property="BorderThickness" Value="1" />
+        <Setter Property="BorderBrush" Value="{ThemeResource ControlBorder}" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="controls:BasemapGallery">
+                    <Border
+                        Background="{TemplateBinding Background}"
+                        BorderBrush="{TemplateBinding BorderBrush}"
+                        BorderThickness="{TemplateBinding BorderThickness}">
+                        <Grid>
+                            <basemapgallery:UWPCustomListView
+                                x:Name="PART_InnerListView"
+                                Width="{TemplateBinding Width}"
+                                Height="{TemplateBinding Height}"
+                                Padding="{TemplateBinding Padding}"
+                                HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
+                                VerticalAlignment="{TemplateBinding VerticalAlignment}"
+                                HorizontalContentAlignment="Stretch"
+                                Background="{TemplateBinding Background}"
+                                BorderThickness="0"
+                                ScrollViewer.HorizontalScrollBarVisibility="Disabled">
+                                <ListView.Resources>
+                                    <Style TargetType="ListViewItem">
+                                        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
+                                    </Style>
+                                </ListView.Resources>
+                            </basemapgallery:UWPCustomListView>
+                            <Border
+                                x:Name="PART_LoadingScrim"
+                                HorizontalAlignment="Stretch"
+                                VerticalAlignment="Stretch">
+                                <Grid>
+                                    <Border Background="{TemplateBinding Background}" Opacity="0.3" />
+
+                                    <ProgressBar
+                                        Height="16"
+                                        HorizontalAlignment="Stretch"
+                                        VerticalAlignment="Center"
+                                        IsIndeterminate="True" />
+                                </Grid>
+                            </Border>
+                        </Grid>
+                    </Border>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+</ResourceDictionary>
diff --git a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
index 9085d4596..ec5e603a3 100644
--- a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
+++ b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
@@ -3,28 +3,9 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:basemapgallery="using:Esri.ArcGISRuntime.Toolkit.UI.Controls"
     xmlns:controls="using:Esri.ArcGISRuntime.Toolkit.UI.Controls">
-    <ResourceDictionary.ThemeDictionaries>
-        <ResourceDictionary x:Key="Light">
-            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#6a6a6a" />
-            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#151515" />
-            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#007ac2" />
-            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#e2f1fb" />
-            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#f3f3f3" />
-            <SolidColorBrush x:Key="ControlBackground" Color="#fff" />
-            <SolidColorBrush x:Key="ControlBorder" Color="#cacaca" />
-            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit/Assets/BasemapLight.png" />
-        </ResourceDictionary>
-        <ResourceDictionary x:Key="Dark">
-            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#ffffff" />
-            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#ffffff" />
-            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#009af2" />
-            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#202020" />
-            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#2B2B2B" />
-            <SolidColorBrush x:Key="ControlBackground" Color="#353535" />
-            <SolidColorBrush x:Key="ControlBorder" Color="#555555" />
-            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit/Assets/BasemapDark.png" />
-        </ResourceDictionary>
-    </ResourceDictionary.ThemeDictionaries>
+    <ResourceDictionary.MergedDictionaries>
+        <ResourceDictionary Source="BasemapGallery.Resources.xaml" />
+    </ResourceDictionary.MergedDictionaries>
     <Style x:Key="BaseContainerStyle" TargetType="ListViewItem">
         <Setter Property="HorizontalAlignment" Value="Stretch" />
         <Setter Property="HorizontalContentAlignment" Value="Stretch" />
@@ -268,4 +249,4 @@
             </Setter.Value>
         </Setter>
     </Style>
-</ResourceDictionary>
+</ResourceDictionary>
\ No newline at end of file

From aac90e83f083aa331d443a14919e676d6a5fe2df Mon Sep 17 00:00:00 2001
From: Hamish Duff <hduff@esri.com>
Date: Wed, 10 Jan 2024 03:48:45 -0800
Subject: [PATCH 2/7] Update WInUI + UWP BasemapGallery

---
 .../BasemapGallery.Resources.xaml             |  19 +-
 .../Assets/{BasemapLight.png => Basemap.png}  | Bin
 .../BasemapGallery.Resources.xaml             | 266 +-----------------
 .../BasemapGallery/BasemapGallery.Theme.xaml  |  20 ++
 4 files changed, 29 insertions(+), 276 deletions(-)
 rename src/Toolkit/Toolkit.WinUI/Assets/{BasemapLight.png => Basemap.png} (100%)

diff --git a/src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml b/src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
index 577085720..a439e7bd1 100644
--- a/src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
+++ b/src/Toolkit/Toolkit.UWP/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
@@ -2,24 +2,13 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <ResourceDictionary.ThemeDictionaries>
+        <ResourceDictionary x:Key="Default">
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.UWP/Assets/Basemap.png" />
+        </ResourceDictionary>
         <ResourceDictionary x:Key="Light">
-            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#6a6a6a" />
-            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#151515" />
-            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#007ac2" />
-            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#e2f1fb" />
-            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#f3f3f3" />
-            <SolidColorBrush x:Key="ControlBackground" Color="#fff" />
-            <SolidColorBrush x:Key="ControlBorder" Color="#cacaca" />
-            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.UWP/Assets/BasemapLight.png" />
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.UWP/Assets/Basemap.png" />
         </ResourceDictionary>
         <ResourceDictionary x:Key="Dark">
-            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#ffffff" />
-            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#ffffff" />
-            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#009af2" />
-            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#202020" />
-            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#2B2B2B" />
-            <SolidColorBrush x:Key="ControlBackground" Color="#353535" />
-            <SolidColorBrush x:Key="ControlBorder" Color="#555555" />
             <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.UWP/Assets/BasemapDark.png" />
         </ResourceDictionary>
     </ResourceDictionary.ThemeDictionaries>
diff --git a/src/Toolkit/Toolkit.WinUI/Assets/BasemapLight.png b/src/Toolkit/Toolkit.WinUI/Assets/Basemap.png
similarity index 100%
rename from src/Toolkit/Toolkit.WinUI/Assets/BasemapLight.png
rename to src/Toolkit/Toolkit.WinUI/Assets/Basemap.png
diff --git a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
index 137b9b84b..b7e3741fe 100644
--- a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
+++ b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Resources.xaml
@@ -1,271 +1,15 @@
 <ResourceDictionary
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:basemapgallery="using:Esri.ArcGISRuntime.Toolkit.UI.Controls"
-    xmlns:controls="using:Esri.ArcGISRuntime.Toolkit.UI.Controls">
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <ResourceDictionary.ThemeDictionaries>
+        <ResourceDictionary x:Key="Default">
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.WinUI/Assets/Basemap.png" />
+        </ResourceDictionary>
         <ResourceDictionary x:Key="Light">
-            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#6a6a6a" />
-            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#151515" />
-            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#007ac2" />
-            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#e2f1fb" />
-            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#f3f3f3" />
-            <SolidColorBrush x:Key="ControlBackground" Color="#fff" />
-            <SolidColorBrush x:Key="ControlBorder" Color="#cacaca" />
-            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.WinUI/Assets/BasemapLight.png" />
+            <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.WinUI/Assets/Basemap.png" />
         </ResourceDictionary>
         <ResourceDictionary x:Key="Dark">
-            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#ffffff" />
-            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#ffffff" />
-            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#009af2" />
-            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#202020" />
-            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#2B2B2B" />
-            <SolidColorBrush x:Key="ControlBackground" Color="#353535" />
-            <SolidColorBrush x:Key="ControlBorder" Color="#555555" />
             <BitmapImage x:Key="BasemapPlaceholder" UriSource="ms-appx:///Esri.ArcGISRuntime.Toolkit.WinUI/Assets/BasemapDark.png" />
         </ResourceDictionary>
     </ResourceDictionary.ThemeDictionaries>
-    <Style x:Key="BaseContainerStyle" TargetType="ListViewItem">
-        <Setter Property="HorizontalAlignment" Value="Stretch" />
-        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
-        <Setter Property="Foreground" Value="{ThemeResource ItemTextForegroundUnselected}" />
-        <Setter Property="Padding" Value="0" />
-        <Setter Property="BorderThickness" Value="3,0,0,0" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="ListViewItem">
-                    <Grid
-                        x:Name="ContentBorder"
-                        Margin="{TemplateBinding Padding}"
-                        HorizontalAlignment="Stretch"
-                        Background="Transparent"
-                        BorderBrush="Transparent"
-                        BorderThickness="{TemplateBinding BorderThickness}">
-                        <Grid
-                            x:Name="ContentPresenterGrid"
-                            HorizontalAlignment="Stretch"
-                            VerticalAlignment="Top"
-                            Background="Transparent">
-                            <ContentPresenter
-                                x:Name="ContentPresenter"
-                                HorizontalAlignment="Stretch"
-                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
-                                HorizontalContentAlignment="Stretch"
-                                Content="{TemplateBinding Content}"
-                                ContentTemplate="{TemplateBinding ContentTemplate}"
-                                ContentTransitions="{TemplateBinding ContentTransitions}"
-                                Foreground="{TemplateBinding Foreground}" />
-                            <Border
-                                x:Name="ContentDisabledScrim"
-                                HorizontalAlignment="Stretch"
-                                VerticalAlignment="Stretch"
-                                Background="{ThemeResource ControlBackground}"
-                                IsHitTestVisible="false"
-                                Opacity="0" />
-                        </Grid>
-
-                        <VisualStateManager.VisualStateGroups>
-                            <VisualStateGroup x:Name="CommonStates">
-                                <VisualState x:Name="Normal" />
-                                <VisualState x:Name="PointerOver">
-                                    <Storyboard>
-                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="Background">
-                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource HoverBackgroundBrush}" />
-                                        </ObjectAnimationUsingKeyFrames>
-                                    </Storyboard>
-                                </VisualState>
-                                <VisualState x:Name="Pressed" />
-                                <VisualState x:Name="Selected">
-                                    <Storyboard>
-                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="Background">
-                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBackgroundBrush}" />
-                                        </ObjectAnimationUsingKeyFrames>
-                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="BorderBrush">
-                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBorderBrush}" />
-                                        </ObjectAnimationUsingKeyFrames>
-                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
-                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ItemTextForegroundSelected}" />
-                                        </ObjectAnimationUsingKeyFrames>
-                                    </Storyboard>
-                                </VisualState>
-                                <VisualState x:Name="PointerOverSelected">
-                                    <Storyboard>
-                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="Background">
-                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBackgroundBrush}" />
-                                        </ObjectAnimationUsingKeyFrames>
-                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentBorder" Storyboard.TargetProperty="BorderBrush">
-                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SelectionRectangleBorderBrush}" />
-                                        </ObjectAnimationUsingKeyFrames>
-                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
-                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource ItemTextForegroundSelected}" />
-                                        </ObjectAnimationUsingKeyFrames>
-                                    </Storyboard>
-                                </VisualState>
-                                <VisualState x:Name="PressedSelected" />
-                            </VisualStateGroup>
-                            <VisualStateGroup x:Name="DisabledStates">
-                                <VisualState x:Name="Enabled" />
-                                <VisualState x:Name="Disabled">
-                                    <Storyboard>
-                                        <DoubleAnimation
-                                            Storyboard.TargetName="ContentDisabledScrim"
-                                            Storyboard.TargetProperty="Opacity"
-                                            To="{ThemeResource ListViewItemDisabledThemeOpacity}"
-                                            Duration="0" />
-                                    </Storyboard>
-                                </VisualState>
-                            </VisualStateGroup>
-                        </VisualStateManager.VisualStateGroups>
-                    </Grid>
-                </ControlTemplate>
-
-            </Setter.Value>
-        </Setter>
-    </Style>
-    <Style
-        x:Key="GridContainerStyle"
-        BasedOn="{StaticResource BaseContainerStyle}"
-        TargetType="ListViewItem">
-        <Setter Property="Margin" Value="3,9,3,9" />
-        <Setter Property="BorderThickness" Value="1" />
-    </Style>
-    <Style TargetType="controls:BasemapGallery">
-        <Setter Property="Background" Value="{ThemeResource ControlBackground}" />
-        <Setter Property="GridItemTemplate">
-            <Setter.Value>
-                <DataTemplate>
-                    <StackPanel
-                        MaxWidth="128"
-                        Background="Transparent"
-                        Orientation="Vertical"
-                        ToolTipService.ToolTip="{Binding Tooltip}">
-                        <Border
-                            Width="64"
-                            Height="64"
-                            Margin="8"
-                            BorderBrush="#4d6e6e6e"
-                            BorderThickness="1">
-                            <Grid>
-
-                                <Image
-                                    Width="32"
-                                    Height="32"
-                                    HorizontalAlignment="Center"
-                                    VerticalAlignment="Center"
-                                    Source="{ThemeResource BasemapPlaceholder}" />
-                                <Image
-                                    Width="62"
-                                    Height="62"
-                                    Opacity="1"
-                                    Source="{Binding ThumbnailBitmap, Mode=OneWay}"
-                                    Stretch="UniformToFill" />
-                            </Grid>
-                        </Border>
-                        <TextBlock
-                            x:Name="ItemTextBlock"
-                            MinHeight="32"
-                            Margin="8,0,8,8"
-                            FontSize="11"
-                            Text="{Binding Name}"
-                            TextAlignment="Center"
-                            TextWrapping="Wrap" />
-                    </StackPanel>
-                </DataTemplate>
-            </Setter.Value>
-        </Setter>
-        <Setter Property="ListItemTemplate">
-            <Setter.Value>
-                <DataTemplate>
-                    <Grid
-                        Padding="6"
-                        HorizontalAlignment="Stretch"
-                        Background="Transparent"
-                        ToolTipService.ToolTip="{Binding Tooltip}">
-                        <Grid.ColumnDefinitions>
-                            <ColumnDefinition Width="Auto" />
-                            <ColumnDefinition Width="*" />
-                        </Grid.ColumnDefinitions>
-                        <Border
-                            Width="64"
-                            Height="64"
-                            Margin="0,0,6,0"
-                            BorderBrush="#4d6e6e6e"
-                            BorderThickness="1">
-                            <Grid>
-
-                                <Image
-                                    Width="32"
-                                    Height="32"
-                                    HorizontalAlignment="Center"
-                                    VerticalAlignment="Center"
-                                    Source="{ThemeResource BasemapPlaceholder}" />
-                                <Image
-                                    Width="62"
-                                    Height="62"
-                                    Source="{Binding ThumbnailBitmap, Mode=OneWay}"
-                                    Stretch="UniformToFill" />
-                            </Grid>
-                        </Border>
-                        <TextBlock
-                            x:Name="ItemTextBlock"
-                            Grid.Column="1"
-                            VerticalAlignment="Center"
-                            Text="{Binding Name, Mode=OneWay}"
-                            TextWrapping="Wrap" />
-                    </Grid>
-                </DataTemplate>
-            </Setter.Value>
-        </Setter>
-        <Setter Property="ListItemContainerStyle" Value="{StaticResource BaseContainerStyle}" />
-        <Setter Property="GridItemContainerStyle" Value="{StaticResource GridContainerStyle}" />
-        <Setter Property="HorizontalAlignment" Value="Stretch" />
-        <Setter Property="VerticalAlignment" Value="Stretch" />
-        <Setter Property="Padding" Value="0" />
-        <Setter Property="BorderThickness" Value="1" />
-        <Setter Property="BorderBrush" Value="{ThemeResource ControlBorder}" />
-        <Setter Property="Template">
-            <Setter.Value>
-                <ControlTemplate TargetType="controls:BasemapGallery">
-                    <Border
-                        Background="{TemplateBinding Background}"
-                        BorderBrush="{TemplateBinding BorderBrush}"
-                        BorderThickness="{TemplateBinding BorderThickness}">
-                        <Grid>
-                            <basemapgallery:UWPCustomListView
-                                x:Name="PART_InnerListView"
-                                Width="{TemplateBinding Width}"
-                                Height="{TemplateBinding Height}"
-                                Padding="{TemplateBinding Padding}"
-                                HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
-                                VerticalAlignment="{TemplateBinding VerticalAlignment}"
-                                HorizontalContentAlignment="Stretch"
-                                Background="{TemplateBinding Background}"
-                                BorderThickness="0"
-                                ScrollViewer.HorizontalScrollBarVisibility="Disabled">
-                                <ListView.Resources>
-                                    <Style TargetType="ListViewItem">
-                                        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
-                                    </Style>
-                                </ListView.Resources>
-                            </basemapgallery:UWPCustomListView>
-                            <Border
-                                x:Name="PART_LoadingScrim"
-                                HorizontalAlignment="Stretch"
-                                VerticalAlignment="Stretch">
-                                <Grid>
-                                    <Border Background="{TemplateBinding Background}" Opacity="0.3" />
-
-                                    <ProgressBar
-                                        Height="16"
-                                        HorizontalAlignment="Stretch"
-                                        VerticalAlignment="Center"
-                                        IsIndeterminate="True" />
-                                </Grid>
-                            </Border>
-                        </Grid>
-                    </Border>
-                </ControlTemplate>
-            </Setter.Value>
-        </Setter>
-    </Style>
 </ResourceDictionary>
diff --git a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
index ec5e603a3..e69218ac9 100644
--- a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
+++ b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
@@ -6,6 +6,26 @@
     <ResourceDictionary.MergedDictionaries>
         <ResourceDictionary Source="BasemapGallery.Resources.xaml" />
     </ResourceDictionary.MergedDictionaries>
+    <ResourceDictionary.ThemeDictionaries>
+        <ResourceDictionary x:Key="Light">
+            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#6a6a6a" />
+            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#151515" />
+            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#007ac2" />
+            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#e2f1fb" />
+            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#f3f3f3" />
+            <SolidColorBrush x:Key="ControlBackground" Color="#fff" />
+            <SolidColorBrush x:Key="ControlBorder" Color="#cacaca" />
+        </ResourceDictionary>
+        <ResourceDictionary x:Key="Dark">
+            <SolidColorBrush x:Key="ItemTextForegroundUnselected" Color="#ffffff" />
+            <SolidColorBrush x:Key="ItemTextForegroundSelected" Color="#ffffff" />
+            <SolidColorBrush x:Key="SelectionRectangleBorderBrush" Color="#009af2" />
+            <SolidColorBrush x:Key="SelectionRectangleBackgroundBrush" Color="#202020" />
+            <SolidColorBrush x:Key="HoverBackgroundBrush" Color="#2B2B2B" />
+            <SolidColorBrush x:Key="ControlBackground" Color="#353535" />
+            <SolidColorBrush x:Key="ControlBorder" Color="#555555" />
+        </ResourceDictionary>
+    </ResourceDictionary.ThemeDictionaries>
     <Style x:Key="BaseContainerStyle" TargetType="ListViewItem">
         <Setter Property="HorizontalAlignment" Value="Stretch" />
         <Setter Property="HorizontalContentAlignment" Value="Stretch" />

From 8db6e33b86e0995d6076c1672fd44c45f39394cd Mon Sep 17 00:00:00 2001
From: Hamish Duff <hduff@esri.com>
Date: Wed, 10 Jan 2024 03:59:23 -0800
Subject: [PATCH 3/7] update MAUI resources

---
 .../Images/basemapdark.png}                         | Bin
 .../Images/basemaplight.png}                        | Bin
 2 files changed, 0 insertions(+), 0 deletions(-)
 rename src/Toolkit/Toolkit.Maui/{Assets/BasemapDark.png => Resources/Images/basemapdark.png} (100%)
 rename src/Toolkit/Toolkit.Maui/{Assets/BasemapLight.png => Resources/Images/basemaplight.png} (100%)

diff --git a/src/Toolkit/Toolkit.Maui/Assets/BasemapDark.png b/src/Toolkit/Toolkit.Maui/Resources/Images/basemapdark.png
similarity index 100%
rename from src/Toolkit/Toolkit.Maui/Assets/BasemapDark.png
rename to src/Toolkit/Toolkit.Maui/Resources/Images/basemapdark.png
diff --git a/src/Toolkit/Toolkit.Maui/Assets/BasemapLight.png b/src/Toolkit/Toolkit.Maui/Resources/Images/basemaplight.png
similarity index 100%
rename from src/Toolkit/Toolkit.Maui/Assets/BasemapLight.png
rename to src/Toolkit/Toolkit.Maui/Resources/Images/basemaplight.png

From 2930c8b99803fffad4c8b37e6dfbe37b0d1817b9 Mon Sep 17 00:00:00 2001
From: Hamish Duff <hduff@esri.com>
Date: Wed, 10 Jan 2024 08:33:05 -0800
Subject: [PATCH 4/7] Improve resource loading for maui converter

---
 .../Images/basemaplight.png => Assets/basemap.png}  | Bin
 .../{Resources/Images => Assets}/basemapdark.png    | Bin
 .../ByteArrayToImageSourceConverter.cs              |   5 +++--
 .../Esri.ArcGISRuntime.Toolkit.Maui.csproj          |  12 +-----------
 4 files changed, 4 insertions(+), 13 deletions(-)
 rename src/Toolkit/Toolkit.Maui/{Resources/Images/basemaplight.png => Assets/basemap.png} (100%)
 rename src/Toolkit/Toolkit.Maui/{Resources/Images => Assets}/basemapdark.png (100%)

diff --git a/src/Toolkit/Toolkit.Maui/Resources/Images/basemaplight.png b/src/Toolkit/Toolkit.Maui/Assets/basemap.png
similarity index 100%
rename from src/Toolkit/Toolkit.Maui/Resources/Images/basemaplight.png
rename to src/Toolkit/Toolkit.Maui/Assets/basemap.png
diff --git a/src/Toolkit/Toolkit.Maui/Resources/Images/basemapdark.png b/src/Toolkit/Toolkit.Maui/Assets/basemapdark.png
similarity index 100%
rename from src/Toolkit/Toolkit.Maui/Resources/Images/basemapdark.png
rename to src/Toolkit/Toolkit.Maui/Assets/basemapdark.png
diff --git a/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs b/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs
index 3f053400c..e46509aaa 100644
--- a/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs
+++ b/src/Toolkit/Toolkit.Maui/BasemapGallery/ByteArrayToImageSourceConverter.cs
@@ -35,10 +35,11 @@ internal class ByteArrayToImageSourceConverter : IValueConverter
 
         if (currentTheme == AppTheme.Dark)
         {
-            return ImageSource.FromFile("basemapdark.png");
+            return ImageSource.FromResource("Esri.ArcGISRuntime.Toolkit.Maui.Assets.basemapdark.png", typeof(BasemapGallery).Assembly);
         }
 
-        return ImageSource.FromFile("basemaplight.png");
+        // Return the placeholder image directly rather than null to work around bugs/limitations in MAUI
+        return ImageSource.FromResource("Esri.ArcGISRuntime.Toolkit.Maui.Assets.basemap.png", typeof(BasemapGallery).Assembly);
     }
 
     /// <inheritdoc/>
diff --git a/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj b/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj
index 643ae74eb..13c32caa3 100644
--- a/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj
+++ b/src/Toolkit/Toolkit.Maui/Esri.ArcGISRuntime.Toolkit.Maui.csproj
@@ -19,18 +19,8 @@
 
     <ItemGroup>
       <EmbeddedResource Include="..\Toolkit\LocalizedStrings\Resources.resx" Link="LocalizedStrings\Resources.resx" />
-      <MauiImage Include="Assets\basemapdark.png" />
-      <MauiImage Include="Assets\basemaplight.png" />
       <MauiFont Include="Resources\Fonts\calcite-ui-icons-24.ttf" />
-      <EmbeddedResource Include="Assets\caret-down-small.png" />
-      <EmbeddedResource Include="Assets\caret-down.png" />
-      <EmbeddedResource Include="Assets\pin-tear-small.png" />
-      <EmbeddedResource Include="Assets\pin-tear.png" />
-      <EmbeddedResource Include="Assets\search-small.png" />
-      <EmbeddedResource Include="Assets\search.png" />
-      <EmbeddedResource Include="Assets\x-small.png" />
-      <EmbeddedResource Include="Assets\x.png" />
-      <EmbeddedResource Include="Assets\pin-red.png" />
+      <EmbeddedResource Include="Assets\*.png"/>
       <None Include="build\**\*.*" PackagePath="build;buildTransitive" Pack="true" />
       <None Include="Resources\Fonts\calcite-ui-icons-24.ttf" Pack="true" PackagePath="Resources\Fonts" />
     </ItemGroup>

From 4199889d1fc70c8beda099043d332d9111d68795 Mon Sep 17 00:00:00 2001
From: Hamish Duff <hduff@esri.com>
Date: Wed, 10 Jan 2024 08:58:03 -0800
Subject: [PATCH 5/7] Update BasemapGallery.Theme.xaml

---
 .../UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml       | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
index e69218ac9..cf84d01d9 100644
--- a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
+++ b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
@@ -269,4 +269,5 @@
             </Setter.Value>
         </Setter>
     </Style>
-</ResourceDictionary>
\ No newline at end of file
+</ResourceDictionary>
+    
\ No newline at end of file

From 06b73e802911f6143181d98411a5caeecd68d571 Mon Sep 17 00:00:00 2001
From: Hamish Duff <hduff@esri.com>
Date: Wed, 10 Jan 2024 08:58:20 -0800
Subject: [PATCH 6/7] Update BasemapGallery.Theme.xaml

---
 .../UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
index cf84d01d9..e2217ecb6 100644
--- a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
+++ b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
@@ -270,4 +270,4 @@
         </Setter>
     </Style>
 </ResourceDictionary>
-    
\ No newline at end of file
+ 
\ No newline at end of file

From 58d34b9cb68eced0159bb72931c634b40294e4e6 Mon Sep 17 00:00:00 2001
From: Hamish Duff <hduff@esri.com>
Date: Wed, 10 Jan 2024 08:59:42 -0800
Subject: [PATCH 7/7] Update BasemapGallery.Theme.xaml

---
 .../UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml         | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
index e2217ecb6..ab6c259af 100644
--- a/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
+++ b/src/Toolkit/Toolkit.WinUI/UI/Controls/BasemapGallery/BasemapGallery.Theme.xaml
@@ -270,4 +270,3 @@
         </Setter>
     </Style>
 </ResourceDictionary>
- 
\ No newline at end of file