[ToggleSplitButton] Inconsistent Disabled colors and poor contrast

[niels9001]

Describe the bug

When is ToggleSplitButton is IsChecked and disabled, the Content gets very hard to read. (See screenshots below). It's also incosistent when comapring it to the a disabled Button (with AccentButtonStyle) or disabled ToggleButton.

Steps to reproduce the bug

Add

<Grid> <muxc:ToggleSplitButton IsEnabled="False" IsChecked="True" Margin="12" Content="ToggleSplitButton with checked state and disabled" /> <Button Style="{ThemeResource AccentButtonStyle}" Content="Button with AccentButtonStyle and disabled" IsEnabled="False" Margin="12" /> <ToggleButton IsChecked="True" Content="ToggleButton and disabled" IsEnabled="False" Margin="12" /> </Grid>

Expected behavior

• Better contrast meeting accessibility requirements
• Similar visual to AccentButtonStyle and ToggleButton

Screenshots

Light theme

Dark theme

NuGet package version

No response

Windows app type

• UWP
• Win32

Device form factor

Desktop

Windows version

No response

Additional context

No response

[robloo]

Related to #6469

[robloo]

This one is easier to fix and should just require inverting the colors in the resource brushes.

[StephenLPeters]

@chigy FYI, can you suggest the proper behavior?

[Jay-o-Way]

This one is easier to fix and should just require inverting the colors in the resource brushes.

So, what's keeping this back? :) @robloo

[robloo]

1. Microsoft design team has to decide things like this. They never replied.
2. I've moved away from WinUI so won't be looking at this.

[crutkas]

@chigy is this something being Looked at

[niels9001]

@chigy is this something being Looked at

WinUI does not have Accent button styles beyond the default button. So this is a custom style we've created.

[DmitriyKomin]

@niels9001, thank you for reporting this. Trying the repro XAML on WinAppSDK 1.5 / Windows 11, readability appears better than the previous (blue) screenshot: