polyhorn_layout/algorithm/
mod.rs

1#[cfg(feature = "impl-stretch")]
2pub mod stretch;
3
4#[cfg(feature = "impl-yoga")]
5pub mod yoga;
6
7use polyhorn_ui::geometry::Dimension;
8use polyhorn_ui::styles::ViewStyle;
9use std::hash::Hash;
10
11use crate::{Layout, MeasureFunc, Size};
12
13pub trait Algorithm {
14    type Node: Copy + Clone + Hash + Eq;
15
16    fn new() -> Self;
17
18    fn new_node(&mut self, style: ViewStyle, children: &[Self::Node]) -> Self::Node;
19
20    fn new_leaf(&mut self, style: ViewStyle, measure: MeasureFunc) -> Self::Node;
21
22    fn add_child(&mut self, parent: Self::Node, child: Self::Node);
23
24    fn remove_child(&mut self, parent: Self::Node, child: Self::Node);
25
26    fn child_count(&self, parent: Self::Node) -> usize;
27
28    fn remove(&mut self, node: Self::Node);
29
30    fn set_style(&mut self, node: Self::Node, style: ViewStyle);
31
32    fn set_measure(&mut self, node: Self::Node, measure: MeasureFunc);
33
34    fn compute_layout(&mut self, node: Self::Node, size: Size<Dimension<f32>>);
35
36    fn layout(&self, node: Self::Node) -> Layout;
37}
polyhorn_layout/algorithm/mod.rs

polyhorn_layout/algorithm/
mod.rs
