css_ast/types/
spread_shadow.rs

1use super::prelude::*;
2use crate::{CalcableValue, Color, Length, NonNegative, NoneOr};
3
4/// <https://drafts.csswg.org/css-borders-4/#typedef-spread-shadow>
5///
6/// ```text,ignore
7/// <spread-shadow> = <'box-shadow-color'>? && [ [ none | <length>{2} ] [ <'box-shadow-blur'> <'box-shadow-spread'>? ]? ] && <'box-shadow-position'>?
8/// ```
9#[node]
10#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
11#[parse(all_must_occur)]
12#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
13#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit)]
14#[derive(csskit_derives::NodeWithMetadata)]
15pub struct SpreadShadow<'a> {
16	pub color: Option<Color<'a>>,
17	pub offset: NoneOr<(CalcableValue<'a, Length>, CalcableValue<'a, Length>)>,
18	pub blur: Option<CalcableValue<'a, NonNegative<Length>>>,
19	pub spread: Option<CalcableValue<'a, Length>>,
20	pub position: Option<ShadowPosition>,
21}
22
23/// The position of a shadow: `inset` or `outset`.
24#[node]
25#[derive(Parse, Peek, ToCursors, ToSpan, SemanticEq, Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
26#[cfg_attr(feature = "serde", derive(serde::Serialize), serde())]
27#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(skip))]
28#[derive(csskit_derives::NodeWithMetadata)]
29pub enum ShadowPosition {
30	#[atom(CssAtomSet::Inset)]
31	Inset(T![Ident]),
32	#[atom(CssAtomSet::Outset)]
33	Outset(T![Ident]),
34}
35
36#[cfg(test)]
37mod tests {
38	use super::*;
39	use crate::CssAtomSet;
40	use css_parse::{assert_parse, assert_parse_error, assert_peek_false};
41
42	#[test]
43	fn test_offset_none() {
44		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "none");
45		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "none 5px");
46		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "none 5px 3px");
47	}
48
49	#[test]
50	fn test_lengths() {
51		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "0 0");
52		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "0 0 0");
53		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "0 0 0 0");
54		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px");
55		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px 5px");
56		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px 5px 3px");
57		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "red 10px 20px");
58		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px inset");
59		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px outset");
60		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px 5px inset");
61		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px 5px 3px inset");
62		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "red 10px 20px inset");
63		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "0 0 0 .2rem rgba(0,123,255,.25)");
64		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "0 1px 1px rgba(0,0,0,.075)inset");
65	}
66
67	#[test]
68	fn test_substitution_offsets() {
69		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "calc(1px + 2px) 20px");
70		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "var(--x) var(--y)");
71		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px max(1px, 2px) inset");
72		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px 5px calc(3px) inset");
73	}
74
75	#[test]
76	fn test_leading_position() {
77		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "inset 10px 20px");
78		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "inset 0 1px 1px rgba(0,0,0,.075)");
79		assert_parse!(CssAtomSet::ATOMS, SpreadShadow, "outset 10px 20px");
80	}
81
82	#[test]
83	fn test_errors() {
84		assert_peek_false!(CssAtomSet::ATOMS, SpreadShadow, "");
85		assert_parse_error!(CssAtomSet::ATOMS, SpreadShadow, "10px");
86		assert_parse_error!(CssAtomSet::ATOMS, SpreadShadow, "red");
87		assert_parse_error!(CssAtomSet::ATOMS, SpreadShadow, "inset");
88		assert_parse_error!(CssAtomSet::ATOMS, SpreadShadow, "outset");
89		assert_parse_error!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px -5px");
90		assert_parse_error!(CssAtomSet::ATOMS, SpreadShadow, "10px 20px 5px 3px 7px");
91	}
92}
css_ast/types/spread_shadow.rs

css_ast/types/
spread_shadow.rs
