feat: try to implement Aqua.

demo/Ursa.Demo/App.axaml

@@ -3,7 +3,9 @@
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:u-semi="https://irihi.tech/ursa/themes/semi"
-    xmlns:semi="https://irihi.tech/semi">
+    RequestedThemeVariant="{x:Static semi:SemiTheme.Aquatic}"
+    xmlns:semi="https://irihi.tech/semi"
+    xmlns:demo="clr-namespace:Ursa.Demo">
     <Application.Styles>
         <semi:SemiTheme Locale="zh-CN" />
         <u-semi:SemiTheme Locale="zh-CN" />

demo/Ursa.Demo/Ursa.Demo.csproj

@@ -19,7 +19,9 @@
         <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
         <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="$(AvaloniaVersion)" />
         <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.0" />
+        <!--
         <PackageReference Include="Semi.Avalonia" Version="11.1.0.2" />
+        -->
     </ItemGroup>
 
     <ItemGroup>
@@ -30,4 +32,10 @@
     <ItemGroup>
       <Folder Include="Models\" />
     </ItemGroup>
+
+    <ItemGroup>
+      <Reference Include="Semi.Avalonia">
+        <HintPath>Assets\Semi.Avalonia.dll</HintPath>
+      </Reference>
+    </ItemGroup>
 </Project>

src/Ursa.Themes.Semi/Controls/Banner.axaml

@@ -5,7 +5,7 @@
     <!--  Add Resources Here  -->
     <ControlTheme x:Key="{x:Type u:Banner}" TargetType="u:Banner">
         <Setter Property="u:Banner.BorderThickness" Value="{DynamicResource BannerBorderThickness}" />
-        <Setter Property="u:Banner.BorderBrush" Value="Transparent" />
+        <Setter Property="u:Banner.BorderBrush" Value="{DynamicResource BannerBorderBrush}" />
         <Setter Property="u:Banner.HorizontalContentAlignment" Value="Center" />
         <Setter Property="u:Banner.Template">
             <ControlTemplate TargetType="u:Banner">

src/Ursa.Themes.Semi/Index.axaml

@@ -1,9 +1,14 @@
-<Styles x:Class="Ursa.Themes.Semi.SemiTheme" xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+<Styles x:Class="Ursa.Themes.Semi.SemiTheme" xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:semi="https://irihi.tech/ursa/themes/semi">
     <Styles.Resources>
         <ResourceDictionary>
             <ResourceDictionary.ThemeDictionaries>
                 <ResourceInclude x:Key="Dark" Source="./Themes/Dark/_index.axaml" />
                 <ResourceInclude x:Key="Light" Source="./Themes/Light/_index.axaml" />
+                <ResourceInclude x:Key="{x:Static semi:SemiTheme.Aquatic}" Source="./Themes/HighContrast/Aquatic.axaml" />
+                <ResourceInclude x:Key="{x:Static semi:SemiTheme.Desert}" Source="./Themes/HighContrast/Aquatic.axaml" />
+                <ResourceInclude x:Key="{x:Static semi:SemiTheme.Dust}" Source="./Themes/HighContrast/Aquatic.axaml" />
+                <ResourceInclude x:Key="{x:Static semi:SemiTheme.NightSky}" Source="./Themes/HighContrast/Aquatic.axaml" />
             </ResourceDictionary.ThemeDictionaries>
             <ResourceDictionary.MergedDictionaries>
                 <ResourceInclude Source="../Controls/_index.axaml" />

src/Ursa.Themes.Semi/Index.axaml.cs

@@ -11,6 +11,11 @@ namespace Ursa.Themes.Semi;
 /// </summary>
 public class SemiTheme: Styles
 {
+    public static ThemeVariant Aquatic => new ThemeVariant(nameof(Aquatic), ThemeVariant.Dark);
+    public static ThemeVariant Desert => new ThemeVariant(nameof(Desert), ThemeVariant.Light);
+    public static ThemeVariant Dust => new ThemeVariant(nameof(Dust), ThemeVariant.Dark);
+    public static ThemeVariant NightSky => new ThemeVariant(nameof(NightSky), ThemeVariant.Dark);
+    
     private static readonly Lazy<Dictionary<CultureInfo, ResourceDictionary>> _localeToResource = new Lazy<Dictionary<CultureInfo, ResourceDictionary>>(
         () => new Dictionary<CultureInfo, ResourceDictionary>
         {

src/Ursa.Themes.Semi/Themes/Dark/Banner.axaml

@@ -10,4 +10,5 @@
     <SolidColorBrush x:Key="BannerErrorBorderBrush" Color="#FFFC725A" />
 
     <SolidColorBrush x:Key="BannerCloseButtonForeground" Opacity="0.6" Color="#FFF9F9F9" />
+    <SolidColorBrush x:Key="BannerBorderBrush" Color="Transparent" />
 </ResourceDictionary>

src/Ursa.Themes.Semi/Themes/HighContrast/Aquatic.axaml

@@ -0,0 +1,15 @@
+<ResourceDictionary xmlns="https://github.com/avaloniaui"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <!-- Add Resources Here -->
+    <Color x:Key="WindowColor">#202020</Color>
+    <Color x:Key="WindowTextColor">#FFFFFF</Color>
+    <Color x:Key="HotlightColor">#75E9FC</Color>
+    <Color x:Key="GrayTextColor">#A6A6A6</Color>
+    <Color x:Key="HighlightTextColor">#263B50</Color>
+    <Color x:Key="HighlightColor">#8EE3F0</Color>
+    <Color x:Key="ButtonTextColor">#FFFFFF</Color>
+    <Color x:Key="ButtonFaceColor">#202020</Color>
+    <ResourceDictionary.MergedDictionaries>
+        <ResourceInclude Source="Base.axaml" />
+    </ResourceDictionary.MergedDictionaries>
+</ResourceDictionary>

src/Ursa.Themes.Semi/Themes/HighContrast/Base.axaml

@@ -0,0 +1,102 @@
+<ResourceDictionary xmlns="https://github.com/avaloniaui"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <!--
+    <Color x:Key="WindowColor">#202020</Color>
+    <Color x:Key="WindowTextColor">#FFFFFF</Color>
+    <Color x:Key="HotlightColor">#75E9FC</Color>
+    <Color x:Key="GrayTextColor">#A6A6A6</Color>
+    <Color x:Key="HighlightTextColor">#263B50</Color>
+    <Color x:Key="HighlightColor">#8EE3F0</Color>
+    <Color x:Key="ButtonTextColor">#FFFFFF</Color>
+    <Color x:Key="ButtonFaceColor">#202020</Color>
+     -->
+    <!-- Badge -->
+    <SolidColorBrush x:Key="BadgeBorderBrush" Color="{StaticResource WindowTextColor}" />
+    <SolidColorBrush x:Key="BadgeForeground" Color="{StaticResource WindowColor}" />
+    <SolidColorBrush x:Key="BadgeContentForeground" Color="{StaticResource WindowTextColor}" />
+    <SolidColorBrush x:Key="BadgePrimaryBadgeBackground" Color="{StaticResource HotlightColor}" />
+    <SolidColorBrush x:Key="BadgeLightPrimaryBadgeForeground" Color="{StaticResource HotlightColor}" />
+    <SolidColorBrush x:Key="BadgeInvertedBadgeBackground" Color="{StaticResource WindowColor}" />
+    <SolidColorBrush x:Key="BadgeInvertedPrimaryBadgeForeground" Color="{StaticResource WindowTextColor}" />
+    
+    <!-- Banner -->
+    <SolidColorBrush x:Key="BannerInformationBackground" Color="{StaticResource WindowColor}" />
+    <SolidColorBrush x:Key="BannerBorderBrush" Color="{StaticResource WindowTextColor}" />
+    <SolidColorBrush x:Key="BannerInformationBorderBrush" Color="{StaticResource WindowTextColor}" />
+    <SolidColorBrush x:Key="BannerCloseButtonForeground" Color="{StaticResource WindowTextColor}" />
+    
+    <SolidColorBrush x:Key="ButtonGroupSeparatorForeground" Color="{StaticResource ButtonTextColor}" />
+    <!--  Light  -->
+    <SolidColorBrush x:Key="ButtonGroupDefaultPrimaryForeground" Color="{StaticResource ButtonTextColor}" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultDisabledForeground" Color="{StaticResource GrayTextColor}" />
+
+    <SolidColorBrush x:Key="ButtonGroupDefaultBackground" Color="{StaticResource ButtonFaceColor}" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPointeroverBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPressedBackground" Color="{StaticResource HighlightColor}" />
+
+    <SolidColorBrush x:Key="ButtonGroupDefaultBorderBrush" Color="{StaticResource ButtonTextColor}" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPointeroverBorderBrush" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultPressedBorderBrush" Color="Transparent" />
+    <SolidColorBrush x:Key="ButtonGroupDefaultDisabledBorderBrush" Color="{StaticResource GrayTextColor}" />
+
+    <!--  end Light  -->
+
+    <!--  Solid  -->
+    <SolidColorBrush x:Key="ButtonGroupSolidForeground" Color="{StaticResource HighlightTextColor}" />
+    <SolidColorBrush x:Key="ButtonGroupSolidDisabledForeground" Color="{StaticResource GrayTextColor}" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPointeroverBackground" Color="{StaticResource ButtonTextColor}" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPressedBackground" Color="{StaticResource HighlightColor}" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryBorderBrush" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPointeroverBorderBrush" Color="{StaticResource ButtonTextColor}" />
+    <SolidColorBrush x:Key="ButtonGroupSolidPrimaryPressedBorderBrush" Color="{StaticResource HighlightColor}" />
+
+    <SolidColorBrush x:Key="ButtonGroupSolidDisabledBorderBrush" Color="{StaticResource GrayTextColor}" />
+    <!--  end Solid  -->
+    
+    <!--CalenderDayButton-->
+    <SolidColorBrush x:Key="CalenderDayBackground" Color="Transparent" />
+    <SolidColorBrush x:Key="CalenderDayBorderBrush" Color="Transparent" />
+    <SolidColorBrush x:Key="CalenderDayInRangeBackground" Color="{StaticResource HotlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayTodayBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayTodayForeground" Color="{StaticResource ButtonTextColor}" />
+    <SolidColorBrush x:Key="CalenderDayNotCurrentMonthForeground" Color="{StaticResource GrayTextColor}" />
+    <SolidColorBrush x:Key="CalenderDayPointeroverBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayPressedBackground" Color="{StaticResource HighlightColor}" />
+
+    <SolidColorBrush x:Key="CalenderDaySelectedBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDaySelectedForeground" Color="{StaticResource HighlightTextColor}" />
+    <SolidColorBrush x:Key="CalenderDaySelectedPointeroverBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDaySelectedPressedBackground" Color="{StaticResource HighlightColor}" />
+
+    <SolidColorBrush x:Key="CalenderDayStartEndDateBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayStartEndDateBorderBrush" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayStartEndDatePointeroverBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayStartEndDatePressedBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayStartEndDateInRangeBackground" Color="{StaticResource HighlightColor}" />
+
+    <SolidColorBrush x:Key="CalenderDayPreviewStartEndDateBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderDayPreviewStartEndDatePressedBackground" Color="{StaticResource HighlightColor}" />
+
+    <SolidColorBrush x:Key="CalenderDayBlackoutForeground" Color="{StaticResource GrayTextColor}" />
+    <SolidColorBrush x:Key="CalenderDayBlackoutBackground" Color="Transparent" />
+    <SolidColorBrush x:Key="CalenderDayBlackoutTodayBackground" Color="Transparent" />
+
+    <!--CalenderYearButton-->
+    <SolidColorBrush x:Key="CalenderYearBackground" Color="Transparent" />
+    <SolidColorBrush x:Key="CalenderYearBorderBrush" Color="Transparent" />
+    <SolidColorBrush x:Key="CalenderYearPointeroverBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderYearPressedBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderYearSelectedBackground" Color="{StaticResource HighlightColor}" />
+    <SolidColorBrush x:Key="CalenderYearSelectedForeground" Color="{StaticResource HighlightTextColor}" />
+    <SolidColorBrush x:Key="CalenderYearSelectedPointeroverBackground" Color="{StaticResource HighlightColor}" />
+
+    <!--CalenderView-->
+    <SolidColorBrush x:Key="CalenderViewBackground" Color="Transparent" />
+    
+    <!-- Divider -->
+    <SolidColorBrush x:Key="DividerBorderBrush" Color="{StaticResource WindowTextColor}" />
+    
+</ResourceDictionary>

src/Ursa.Themes.Semi/Themes/Light/Banner.axaml

@@ -10,4 +10,5 @@
     <SolidColorBrush x:Key="BannerErrorBorderBrush" Color="#F93920" />
 
     <SolidColorBrush x:Key="BannerCloseButtonForeground" Opacity="0.62" Color="#1C1F23" />
+    <SolidColorBrush x:Key="BannerBorderBrush" Color="Transparent" />
 </ResourceDictionary>