Theming: Primarily for Bars and Windows

Hi Adrian,

That's great to hear you are enjoying our Avalonia products.  Our Avalonia theme system is evolved from our excellent WPF theme system, and we've tried to make a number of external and internal improvements along the way when we wrote the Avalonia version. 

One area we didn't finalize yet was how to allow for color palette customization.  Right now a single palette is used for all default brush generation.  Being able to customize the color palette passed to theme generator sessions would be handy for full-theme tinting capabilities and is on the TODO list.  We have a good start on what we want to do to add it.

That being said, in the current version we do allow you to inject a custom ThemeGenerator class where you can customize the value generated for any brush.  This documentation topic walks through how to do that kind of thing for any theme, and even how to add custom brushes.  So for instance you could easily override title bar brushes, container background brushes, etc.  Even with just that, you should have the ability to create a customized appearance on the fly at runtime.

Thank you for the quick reply!

Well, in that case, I will look forward to the next couple of releases.
In the meantime, I will experiment with Theme Generator.

kind regards

Hi Adrian,

We've completed our updates to allow for complete color palette customization.  Our included DefaultColorPaletteFactory implements logic to build a color palette.  It has properties to support customizing the midtone of each color ramp.  By altering the NeutralMidtoneColor property, you can effectively "tint" the entire application, either in subtle or more vivid way, depending on the color you choose.

In this example, we tint the application to purple.

<actipro:ModernTheme Includes="All">
	<actipro:ModernTheme.Definition>
		<generation:ThemeDefinition>
			<generation:ThemeDefinition.ColorPaletteFactory>
				<generation:DefaultColorPaletteFactory NeutralMidtoneColor="#716378" />
			</generation:ThemeDefinition.ColorPaletteFactory>
		</generation:ThemeDefinition>
	</actipro:ModernTheme.Definition>
</actipro:ModernTheme>

The tint will be more dramatic in dark theme variants.

Our Color Palette utility in the Sample Browser has also been updated to let you switch between several different example neutral tones.

All of these updates will be in v25.2.1, once it is released.  If you'd like an early preview build to test, please write our support address and mention this thread.