Make GeneratedIconSource.Size DPI aware

[PikeUK]

What would you like to be added:

GeneratedIconSource.Size currently needs to be set to different values at different Windows scaling levels. I'd like it to be DPI agnostic.

Why is this needed:

Currently if you set GeneratedIconSource.Size to 16 this works fine at 100% scaling in Windows 11, but causes the icon text to not generate at 200% scaling. If you set the size to 32 then the text generates fine at 200% scaling but is tiny at 100% scaling. It would be nice if this property was DPI-aware so it could just be set to 16 and would work at any scaling.

For which Platform:

• All
• WPF
• WinUI
• Uno
• Core

Anything else we need to know?

I did a quick fix in my app by removing Size from the XAML and adding the following to the code:

this.TrayIcon.Size = (int)Math.Round(16 * VisualTreeHelper.GetDpi(this).PixelsPerDip);

[PikeUK]

Forgot to mention, I think GeneratedIconSource.TextMargin might also not be DPI aware I didn't investigate that too much. GeneratedIconSource.FontSize on the other hand does automatically scale with Windows DPI scaling.