photon_ui/layout/
size.rs

1use std::fmt;
2
3/// Dimensions in the terminal (width × height).
4#[derive(Debug, Default, Clone, Copy, Eq, PartialEq, Hash)]
5pub struct Size {
6    pub width: u16,
7    pub height: u16,
8}
9
10impl Size {
11    pub const MAX: Self = Self::new(u16::MAX, u16::MAX);
12    pub const MIN: Self = Self::ZERO;
13    pub const ZERO: Self = Self::new(0, 0);
14
15    pub const fn new(width: u16, height: u16) -> Self {
16        Self { width, height }
17    }
18
19    pub const fn area(self) -> u32 {
20        self.width as u32 * self.height as u32
21    }
22}
23
24impl From<(u16, u16)> for Size {
25    fn from((width, height): (u16, u16)) -> Self {
26        Self { width, height }
27    }
28}
29
30impl From<Size> for (u16, u16) {
31    fn from(size: Size) -> Self {
32        (size.width, size.height)
33    }
34}
35
36impl fmt::Display for Size {
37    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
38        write!(f, "{}x{}", self.width, self.height)
39    }
40}
41
42#[cfg(test)]
43mod tests {
44    use super::*;
45
46    #[test]
47    fn size_new() {
48        let s = Size::new(10, 20);
49        assert_eq!(s.width, 10);
50        assert_eq!(s.height, 20);
51    }
52
53    #[test]
54    fn size_area() {
55        assert_eq!(Size::new(10, 20).area(), 200);
56        assert_eq!(Size::ZERO.area(), 0);
57    }
58
59    #[test]
60    fn size_from_tuple() {
61        let s: Size = (5, 7).into();
62        assert_eq!(s, Size::new(5, 7));
63    }
64
65    #[test]
66    fn size_into_tuple() {
67        let s = Size::new(3, 4);
68        let (w, h): (u16, u16) = s.into();
69        assert_eq!(w, 3);
70        assert_eq!(h, 4);
71    }
72
73    #[test]
74    fn size_display() {
75        assert_eq!(Size::new(10, 20).to_string(), "10x20");
76    }
77
78    #[test]
79    fn size_max_area() {
80        assert_eq!(Size::MAX.area(), u16::MAX as u32 * u16::MAX as u32);
81    }
82}
photon_ui/layout/size.rs

photon_ui/layout/
size.rs
