Theme: dark ComboBox to match the rest of the launcher chrome

The native WPF ComboBox style is light grey on white — unreadable on
the dark Settings dialog. Re-template both ComboBox and ComboBoxItem:

- Body: #1A1A20 background (same as other inputs), border with hover
  highlight in Brush.Accent.
- Custom toggle button arrow in secondary text color, brightens on
  hover.
- Popup: Brush.Bg.Card background with border, 4px radius, 300px max
  height, scrollable.
- Items: highlighted hover in Brush.Accent with white foreground
  (same convention as MenuItem). Selected item gets a subtle
  #2C2C32 strip so the current value is visible after closing.

Affects every ComboBox in the app — only one for now (language
picker in Settings) but stays consistent if more get added later.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-05-02 13:10:14 +02:00
parent 01a11d5616
commit 5d0284f1db

View File

@@ -206,6 +206,124 @@
</Setter>
</Style>
<!-- ComboBox sombre.
Re-template minimal pour avoir le contenu, l'arrow et le popup tous en
palette dark. WPF native ComboBox style serait grisé sur blanc. -->
<Style x:Key="ComboBoxToggleButton" TargetType="ToggleButton">
<Setter Property="Background" Value="Transparent" />
<Setter Property="BorderThickness" Value="0" />
<Setter Property="Cursor" Value="Hand" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border Background="Transparent">
<Path x:Name="Arrow"
HorizontalAlignment="Center" VerticalAlignment="Center"
Data="M 0,0 L 8,0 L 4,5 Z"
Fill="{StaticResource Brush.Text.Secondary}" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Arrow" Property="Fill" Value="{StaticResource Brush.Text.Primary}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="ComboBox">
<Setter Property="Background" Value="#1A1A20" />
<Setter Property="BorderBrush" Value="{StaticResource Brush.Border}" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="Foreground" Value="{StaticResource Brush.Text.Primary}" />
<Setter Property="Padding" Value="8,4" />
<Setter Property="MinHeight" Value="32" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBox">
<Grid>
<Border x:Name="Border"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
CornerRadius="4">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="28" />
</Grid.ColumnDefinitions>
<ContentPresenter Grid.Column="0"
Content="{TemplateBinding SelectionBoxItem}"
ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}"
Margin="{TemplateBinding Padding}"
VerticalAlignment="Center"
HorizontalAlignment="Stretch"
TextElement.Foreground="{TemplateBinding Foreground}" />
<ToggleButton Grid.Column="1"
Style="{StaticResource ComboBoxToggleButton}"
IsChecked="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}" />
</Grid>
</Border>
<Popup x:Name="PART_Popup"
Placement="Bottom"
IsOpen="{TemplateBinding IsDropDownOpen}"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Slide">
<Border Background="{StaticResource Brush.Bg.Card}"
BorderBrush="{StaticResource Brush.Border}"
BorderThickness="1"
CornerRadius="4"
MinWidth="{TemplateBinding ActualWidth}"
MaxHeight="300">
<ScrollViewer>
<ItemsPresenter />
</ScrollViewer>
</Border>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource Brush.Accent}" />
</Trigger>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<Setter TargetName="Border" Property="BorderBrush" Value="{StaticResource Brush.Accent}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="ComboBoxItem">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="{StaticResource Brush.Text.Primary}" />
<Setter Property="Padding" Value="10,6" />
<Setter Property="Cursor" Value="Hand" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBoxItem">
<Border x:Name="Bd"
Background="{TemplateBinding Background}"
Padding="{TemplateBinding Padding}">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsHighlighted" Value="True">
<Setter TargetName="Bd" Property="Background" Value="{StaticResource Brush.Accent}" />
<Setter Property="Foreground" Value="White" />
</Trigger>
<Trigger Property="IsSelected" Value="True">
<Setter TargetName="Bd" Property="Background" Value="#2C2C32" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!-- Style ContextMenu sombre, cohérent avec le thème.
On retemplatise complètement pour virer la "icon column" claire que WPF
dessine par défaut sur le bord gauche du popup. -->