1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
use super::*;
/// A stroke of a geometric shape.
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct Stroke {
/// The stroke's paint.
pub paint: Paint,
/// The stroke's thickness.
pub thickness: Abs,
}
impl Default for Stroke {
fn default() -> Self {
Self {
paint: Paint::Solid(Color::BLACK),
thickness: Abs::pt(1.0),
}
}
}
/// A partial stroke representation.
///
/// In this representation, both fields are optional so that you can pass either
/// just a paint (`red`), just a thickness (`0.1em`) or both (`2pt + red`) where
/// this is expected.
#[derive(Default, Clone, Eq, PartialEq, Hash)]
pub struct PartialStroke<T = Length> {
/// The stroke's paint.
pub paint: Smart<Paint>,
/// The stroke's thickness.
pub thickness: Smart<T>,
}
impl PartialStroke<Abs> {
/// Unpack the stroke, filling missing fields from the `default`.
pub fn unwrap_or(self, default: Stroke) -> Stroke {
Stroke {
paint: self.paint.unwrap_or(default.paint),
thickness: self.thickness.unwrap_or(default.thickness),
}
}
/// Unpack the stroke, filling missing fields with the default values.
pub fn unwrap_or_default(self) -> Stroke {
self.unwrap_or(Stroke::default())
}
}
impl<T: Debug> Debug for PartialStroke<T> {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
match (&self.paint, &self.thickness) {
(Smart::Custom(paint), Smart::Custom(thickness)) => {
write!(f, "{thickness:?} + {paint:?}")
}
(Smart::Custom(paint), Smart::Auto) => paint.fmt(f),
(Smart::Auto, Smart::Custom(thickness)) => thickness.fmt(f),
(Smart::Auto, Smart::Auto) => f.pad("<stroke>"),
}
}
}
cast_from_value! {
PartialStroke: "stroke",
thickness: Length => Self {
paint: Smart::Auto,
thickness: Smart::Custom(thickness),
},
color: Color => Self {
paint: Smart::Custom(color.into()),
thickness: Smart::Auto,
},
}
impl Resolve for PartialStroke {
type Output = PartialStroke<Abs>;
fn resolve(self, styles: StyleChain) -> Self::Output {
PartialStroke {
paint: self.paint,
thickness: self.thickness.resolve(styles),
}
}
}
impl Fold for PartialStroke<Abs> {
type Output = Self;
fn fold(self, outer: Self::Output) -> Self::Output {
Self {
paint: self.paint.or(outer.paint),
thickness: self.thickness.or(outer.thickness),
}
}
}
|
