ggplot_rs/facet/
grid.rs

1use crate::render::Rect;
2
3use super::Panel;
4
5/// Compute panel layout for facet_grid.
6pub fn compute_grid_panels(
7    row_levels: &[String],
8    col_levels: &[String],
9    total_area: &Rect,
10    strip_height: f64,
11    strip_width: f64,
12) -> Vec<Panel> {
13    let nrow = row_levels.len().max(1);
14    let ncol = col_levels.len().max(1);
15
16    let panel_width = (total_area.width - strip_width) / ncol as f64;
17    let panel_height = (total_area.height - strip_height) / nrow as f64;
18
19    let mut panels = Vec::new();
20
21    for (ri, rl) in row_levels.iter().enumerate() {
22        for (ci, cl) in col_levels.iter().enumerate() {
23            panels.push(Panel {
24                row: ri,
25                col: ci,
26                label: format!("{rl} | {cl}"),
27                row_label: Some(rl.clone()),
28                col_label: Some(cl.clone()),
29                rect: Rect {
30                    x: total_area.x + ci as f64 * panel_width,
31                    y: total_area.y + strip_height + ri as f64 * panel_height,
32                    width: panel_width,
33                    height: panel_height,
34                },
35            });
36        }
37    }
38
39    panels
40}
ggplot_rs/facet/grid.rs

ggplot_rs/facet/
grid.rs
