[app_server] Severall font fallbacks broken (noto cjk)

[nephele]

I have created a test file for StyledEdit to demonstrate this (I know the bugtracker etiquette sais to include a file extension, but i have no clue what that is here, sorry) edit: revision i tested on is hrev54042

Most notably:

• All Noto Sans Display italic variants are broken (Is there italics in CJK? are we supposed to skew glyphs or fall back to regular (or thin, bold etc. as apropriate) here?)
• Noto Sans Display extrabold is broken
• All Noto Serif Display variants are broken (Maybe fall back to Sans here completely unless a noto-serif cjk font is installed?)

Somewhat related: ​https://review.haiku-os.org/c/haiku/+/2461
Somewhat unrelated: The cursor position for some of the styles in StyledEdit is /really/ far off, like 1.5cm off of the glyph on my screen.

[nephele]

Testfile, includes a sentence for all noto sans display and noto serif display variants

[nephele]

Same file in a zip for extended attributes (I am not sure the bugtracker saves those, so use this if it doesn't)

[X512]

Italic style is usually not used in CJK languages, if used it just shear glyph geometry. There are usually no separate italic fonts.

[waddlesplash]

Please retest after hrev54241.

[nephele]

Noto Sans Display extrabold works now
The Noto Sans Display *italic variants are still broken

Noto Serif Display (medium, regular, thin, black, extralight, light) now display
Noto Serif Display (bold, semibold, extrabold) are still broken
Noto Serif Display *italic variants are still broken

edit: i misthought, it is about fallback actually...

[nephele]

It looks like the only part missing now is to strip the "italic" part of the font fallbacks as an additional step, if no fallback is found before going back to the default style.