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

70 lines
2.0 KiB
C#

using System.Globalization;
using Avalonia.Controls;
using Avalonia.Markup.Xaml;
using Avalonia.Styling;
namespace Ursa.Themes.Semi;
/// <summary>
/// Notice: Don't set Locale if your app is in InvariantGlobalization mode.
/// </summary>
public class SemiTheme: Styles
{
private static readonly Lazy<Dictionary<CultureInfo, string>> _localeToResource = new Lazy<Dictionary<CultureInfo, string>>(
() => new Dictionary<CultureInfo, string>
{
{ new CultureInfo("zh-CN"), "avares://Ursa.Themes.Semi/Locale/zh-CN.axaml" },
{ new CultureInfo("en-US"), "avares://Ursa.Themes.Semi/Locale/en-US.axaml" },
});
private static readonly string _defaultResource = "avares://Ursa.Themes.Semi/Locale/zh-CN.axaml";
private readonly IServiceProvider? sp;
public SemiTheme(IServiceProvider? provider = null)
{
sp = provider;
AvaloniaXamlLoader.Load(provider, this);
}
private CultureInfo? _locale;
public CultureInfo? Locale
{
get => _locale;
set
{
try
{
_locale = value;
var resource = TryGetLocaleResource(value);
var d = AvaloniaXamlLoader.Load(sp, new Uri(resource)) as ResourceDictionary;
if (d is null) return;
foreach (var kv in d)
{
this.Resources.Add(kv);
}
}
catch
{
_locale = CultureInfo.InvariantCulture;
}
}
}
private static string TryGetLocaleResource(CultureInfo? locale)
{
if (Equals(locale, CultureInfo.InvariantCulture))
{
return _defaultResource;
}
if (locale is null)
{
return _localeToResource.Value[new CultureInfo("zh-CN")];
}
if (_localeToResource.Value.TryGetValue(locale, out var resource))
{
return resource;
}
return _localeToResource.Value[new CultureInfo("zh-CN")];
}
}