lewp_css/domain/at_rules/font_face/
font_display.rs

1// This file is part of css. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT. No part of predicator, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
2// Copyright © 2017 The developers of css. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT.
3
4use {
5    crate::{
6        define_css_keyword_enum,
7        parsers::{Parse, ParserContext},
8        CustomParseError,
9    },
10    cssparser::{ParseError, Parser},
11};
12
13// A font-display value for a @font-face rule.
14// The font-display descriptor determines how a font face is displayed based on whether and when it is downloaded and ready to use.
15define_css_keyword_enum!
16(
17    FontDisplay:
18    "auto" => auto,
19    "block" => block,
20    "swap" => swap,
21    "fallback" => fallback,
22    "optional" => optional
23);
24
25impl Parse for FontDisplay {
26    #[inline]
27    fn parse<'i, 't>(
28        _context: &ParserContext,
29        input: &mut Parser<'i, 't>,
30    ) -> Result<Self, ParseError<'i, CustomParseError<'i>>> {
31        FontDisplay::parse(input)
32    }
33}