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Prevent duplicate UI style injections

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2dust
2026-11-03 20:47:33 +08:00
parent ff9fd7b988
commit 749a7312d7
1 changed files with 44 additions and 21 deletions
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v2rayN/v2rayN.Desktop/ViewModels/ThemeSettingViewModel.cs
+44 -21
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@@ -7,6 +7,10 @@ namespace v2rayN.Desktop.ViewModels;
public partial class ThemeSettingViewModel : MyReactiveObject
{
private Style? _fontSizeStyle;
private Style? _fontSizeExStyle;
private Style? _fontFamilyStyle;
[Reactive] public partial string CurrentTheme { get; set; }
[Reactive] public partial int CurrentFontSize { get; set; }
@@ -34,7 +38,7 @@ public partial class ThemeSettingViewModel : MyReactiveObject
CurrentFontSize = _config.UiItem.CurrentFontSize;
CurrentLanguage = _config.UiItem.CurrentLanguage;
this.WhenAnyValue(x => x.CurrentTheme)
this.WhenAnyValueUnsafe(x => x.CurrentTheme)
.Where(y => y.IsNotEmpty())
.SubscribeAsync(async _ =>
{
@@ -46,7 +50,7 @@ public partial class ThemeSettingViewModel : MyReactiveObject
}
});
this.WhenAnyValue(x => x.CurrentFontSize)
this.WhenAnyValueUnsafe(x => x.CurrentFontSize)
.Where(y => y > 0)
.SubscribeAsync(async _ =>
{
@@ -58,7 +62,7 @@ public partial class ThemeSettingViewModel : MyReactiveObject
}
});
this.WhenAnyValue(x => x.CurrentLanguage)
this.WhenAnyValueUnsafe(x => x.CurrentLanguage)
.Where(y => !y.IsNullOrEmpty())
.SubscribeAsync(async _ =>
{
@@ -75,19 +79,20 @@ public partial class ThemeSettingViewModel : MyReactiveObject
private void ModifyTheme()
{
var app = Application.Current;
if (app is not null)
if (app is null)
{
app.RequestedThemeVariant = CurrentTheme switch
{
nameof(ETheme.Dark) => ThemeVariant.Dark,
nameof(ETheme.Light) => ThemeVariant.Light,
nameof(ETheme.Aquatic) => SemiTheme.Aquatic,
nameof(ETheme.Desert) => SemiTheme.Desert,
nameof(ETheme.Dusk) => SemiTheme.Dusk,
nameof(ETheme.NightSky) => SemiTheme.NightSky,
_ => ThemeVariant.Default,
};
return;
}
app.RequestedThemeVariant = CurrentTheme switch
{
nameof(ETheme.Dark) => ThemeVariant.Dark,
nameof(ETheme.Light) => ThemeVariant.Light,
nameof(ETheme.Aquatic) => SemiTheme.Aquatic,
nameof(ETheme.Desert) => SemiTheme.Desert,
nameof(ETheme.Dusk) => SemiTheme.Dusk,
nameof(ETheme.NightSky) => SemiTheme.NightSky,
_ => ThemeVariant.Default,
};
}
private void ModifyFontSize()
@@ -98,7 +103,7 @@ public partial class ThemeSettingViewModel : MyReactiveObject
return;
}
Style style = new(x => Selectors.Or(
var style = new Style(x => Selectors.Or(
x.OfType<Button>(),
x.OfType<TextBox>(),
x.OfType<TextBlock>(),
@@ -110,12 +115,12 @@ public partial class ThemeSettingViewModel : MyReactiveObject
x.OfType<HeaderedContentControl>(),
x.OfType<TextEditor>()
));
style.Add(new Setter()
style.Add(new Setter
{
Property = TemplatedControl.FontSizeProperty,
Value = size,
});
Application.Current?.Styles.Add(style);
ReplaceStyle(ref _fontSizeStyle, style);
ModifyFontSizeEx(size);
}
@@ -124,9 +129,10 @@ public partial class ThemeSettingViewModel : MyReactiveObject
{
//DataGrid
var rowHeight = 20 + (size / 2);
var style = new Style(x => x.OfType<DataGrid>());
style.Add(new Setter(DataGrid.RowHeightProperty, rowHeight));
Application.Current?.Styles.Add(style);
ReplaceStyle(ref _fontSizeExStyle, style);
}
private void ModifyFontFamily()
@@ -139,7 +145,7 @@ public partial class ThemeSettingViewModel : MyReactiveObject
try
{
Style style = new(x => Selectors.Or(
var style = new Style(x => Selectors.Or(
x.OfType<Button>(),
x.OfType<TextBox>(),
x.OfType<TextBlock>(),
@@ -152,16 +158,33 @@ public partial class ThemeSettingViewModel : MyReactiveObject
x.OfType<WindowNotificationManager>(),
x.OfType<TextEditor>()
));
style.Add(new Setter()
style.Add(new Setter
{
Property = TemplatedControl.FontFamilyProperty,
Value = new FontFamily(currentFontFamily),
});
Application.Current?.Styles.Add(style);
ReplaceStyle(ref _fontFamilyStyle, style);
}
catch (Exception ex)
{
Logging.SaveLog("ModifyFontFamily", ex);
}
}
private static void ReplaceStyle(ref Style? oldStyle, Style newStyle)
{
var app = Application.Current;
if (app is null)
{
return;
}
if (oldStyle is not null)
{
app.Styles.Remove(oldStyle);
}
oldStyle = newStyle;
app.Styles.Add(newStyle);
}
}