asdf_overlay_common/
size.rs

1//! Size-related types and utilities.
2
3use bincode::{Decode, Encode};
4
5/// A length that can be specified as either a percentage of a container size or an absolute length.
6#[derive(Debug, Decode, Encode, Clone, Copy, PartialEq)]
7pub enum PercentLength {
8    /// A percentage length relative to a base size.
9    ///
10    /// For example, `0.5` is 50% of the base size.
11    Percent(f32),
12
13    /// An absolute length. Usually in pixels.
14    ///
15    /// For example, `100.0` is 100 pixels.
16    Length(f32),
17}
18
19impl PercentLength {
20    pub const ZERO: Self = Self::Length(0.0);
21
22    /// Resolves the [`PercentLength`] to an absolute length based on the given container size.
23    pub const fn resolve(self, container_size: f32) -> f32 {
24        match self {
25            Self::Percent(percent) => container_size * percent,
26            Self::Length(length) => length,
27        }
28    }
29}
30
31impl Default for PercentLength {
32    fn default() -> Self {
33        Self::ZERO
34    }
35}
asdf_overlay_common/size.rs

asdf_overlay_common/
size.rs
