css_ast/types/
opacity_value.rs

1use super::prelude::*;
2use crate::{Percentage, Ranged};
3
4#[derive(IntoCursor, Peek, Parse, ToCursors, Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
5#[cfg_attr(feature = "serde", derive(serde::Serialize))]
6#[cfg_attr(feature = "visitable", derive(csskit_derives::Visitable), visit(self))]
7#[derive(csskit_derives::NodeWithMetadata)]
8pub enum OpacityValue {
9	Number(Ranged<T![Number], 0, 1>),
10	Percent(Ranged<Percentage, 0, 100>),
11}
12
13impl OpacityValue {
14	#[allow(non_upper_case_globals)]
15	pub const Zero: OpacityValue = OpacityValue::Number(Ranged(<T![Number]>::NUMBER_ZERO));
16}
17
18impl From<OpacityValue> for i32 {
19	fn from(value: OpacityValue) -> Self {
20		match value {
21			OpacityValue::Number(t) => t.0.into(),
22			OpacityValue::Percent(t) => {
23				let f: f32 = t.0.into();
24				f as i32
25			}
26		}
27	}
28}
29
30impl From<OpacityValue> for f32 {
31	fn from(value: OpacityValue) -> Self {
32		match value {
33			OpacityValue::Number(t) => t.0.into(),
34			OpacityValue::Percent(t) => t.0.into(),
35		}
36	}
37}
38
39#[cfg(test)]
40mod tests {
41	use super::*;
42	use crate::CssAtomSet;
43	use css_parse::{assert_parse, assert_parse_error};
44
45	#[test]
46	fn size_test() {
47		assert_eq!(std::mem::size_of::<OpacityValue>(), 16);
48	}
49
50	#[test]
51	fn test_writes() {
52		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "0.1");
53		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "1");
54		assert_parse!(CssAtomSet::ATOMS, OpacityValue, "50%");
55	}
56
57	#[test]
58	fn test_errors() {
59		assert_parse_error!(CssAtomSet::ATOMS, OpacityValue, "20");
60		assert_parse_error!(CssAtomSet::ATOMS, OpacityValue, "1000%");
61	}
62}
css_ast/types/opacity_value.rs

css_ast/types/
opacity_value.rs
