Failure to find any font (probably on Embedded)

[Kevin Rushforth]

A more informative message and an earlier detection both sound good. Not 
sure about the pointer to the Wiki page, though. We haven't done that in 
the past that I am aware of. If we do want to go down that path, I would 
suggest a pointer to a single, "well-known" support page that could 
describe various end-user configuration issues that we might want to 
document.

-- Kevin


David Hill wrote:
>
> I am chasing a edge case that probably only happens in certain 
> Embedded configurations. If we don't find *any* fonts, then we quietly 
> fail and blame it on CSS :-)
>
> I say blame it on CSS because the resulting hard failure is:
> Exception in thread "JavaFX Application Thread" 
> java.lang.NoClassDefFoundError: Could not initialize class 
> javafx.scene.CssStyleHelper
> This is because CSS needs a font for various calculations.
>
> With Embedded, if libfontconfig is not present (or improperly 
> configured) you will not find any fonts.
>
> I would like thoughts on my putting a more informative error message 
> out, and making zero fonts an earlier hard failure.
>
> What I would really like to do is to be able to put a URL to a Fonts 
> wiki page (like: 
> https://wiki.openjdk.java.net/display/OpenJFX/Font+Setup) but not sure 
> how well that would stand up to the test of time.
>
> The code point in FontConfigManager is:
>
>         if (anyFont == null) {
>             if (debugFonts) {
>                 System.err.println("Fontconfig returned no fonts at 
> all.");
>             }
>             fontConfigFailed = true;
>             return;
>