Previously, font selection ignored the Unicode emoji presentation of a
code point. Emoji-capable code points were always resolved through
pre-baked color emoji and symbol fonts. Text-default code points which
lacked the `Emoji_Presentation` property, were therefore rendered as
color emoji rather than text. We now classify each code point's default
presentation from its `Emoji_Presentation` property and any trailing
variation selector.
Pass the requested font weight and slope to generic_font_name() and use
them to select the most suitable font family. Families that have the
exact requested weight are strongly preferred, followed by families with
more style variety.
This ensures that when CSS requests bold text with a generic font family
like `serif`, we select a family that actually supports bold weights
rather than one that only has regular weight.
Co-authored-by: Jelle Raaijmakers <jelle@ladybird.org>
WebView::FontPlugin was the only implementation of the abstract
FontPlugin base class. Its dependencies (LibGfx, LibCore) are
already visible to LibWeb.
Remove the virtual dispatch by making FontPlugin concrete and
absorbing the WebView::FontPlugin implementation directly.
