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use zellij_tile::prelude::*;
use crate::click::{slop_key, ClickAction, ClickRegion};
#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
pub enum LastEmittedCursor {
#[default]
Unknown,
Sent(Option<(usize, usize)>),
}
#[derive(Default)]
pub struct Frame {
pub click_regions: Vec<ClickRegion>,
pub last_render_rows: usize,
pub last_render_cols: usize,
pub last_emitted_cursor: LastEmittedCursor,
pub soft_keyboard_visible: bool,
}
impl Frame {
pub fn emit_cursor(&mut self, new_pos: Option<(usize, usize)>) {
let needs_emit = match self.last_emitted_cursor {
LastEmittedCursor::Unknown => true,
LastEmittedCursor::Sent(prev) => prev != new_pos,
};
if needs_emit {
show_cursor(new_pos);
self.last_emitted_cursor = LastEmittedCursor::Sent(new_pos);
}
}
pub fn click_to_action(&self, row: usize, col: usize) -> Option<ClickAction> {
for region in &self.click_regions {
if region.priority == 0
&& region.row_start <= row
&& row < region.row_end
&& col >= region.col_start
&& col < region.col_end
{
return Some(region.action.clone());
}
}
let mut best: Option<(&ClickRegion, u64)> = None;
for region in &self.click_regions {
if region.priority == 0 {
continue;
}
if row < region.row_start || row >= region.row_end {
continue;
}
if col < region.col_start || col >= region.col_end {
continue;
}
let Some((cx, cy)) = region.center else {
continue;
};
let dx = (cx as i64 - col as i64).unsigned_abs();
let dy = (cy as i64 - row as i64).unsigned_abs();
let dist_sq = dx * dx + dy * dy;
best = Some(match best {
None => (region, dist_sq),
Some((cur, cur_d)) if dist_sq < cur_d => (region, dist_sq),
Some((cur, cur_d)) if dist_sq == cur_d => {
let cur_key = slop_key(cur);
let new_key = slop_key(region);
if new_key < cur_key {
(region, dist_sq)
} else {
(cur, cur_d)
}
},
Some(prev) => prev,
});
}
best.map(|(r, _)| r.action.clone())
}
}
pub fn chrome_offsets(
rows: usize,
suppress_top_bar: bool,
soft_keyboard_visible: bool,
) -> (usize, usize) {
let body_top = if suppress_top_bar { 0 } else { 1 };
let bar_height = if soft_keyboard_visible && rows.saturating_sub(body_top) >= 2 {
1
} else {
0
};
(body_top, bar_height)
}
#[cfg(test)]
mod tests {
use super::*;
use crate::components::modifier_bar::CellId;
fn kb(id: u16) -> ClickAction {
ClickAction::Keyboard(CellId(id))
}
#[test]
fn tight_wins_over_overlapping_slop() {
let mut f = Frame::default();
f.click_regions.push(ClickRegion::tight(5, 10, 13, kb(1)));
f.click_regions
.push(ClickRegion::slop(5, 9, 14, kb(1), (11, 5)));
f.click_regions.push(ClickRegion::tight(5, 13, 16, kb(2)));
f.click_regions
.push(ClickRegion::slop(5, 12, 17, kb(2), (14, 5)));
assert_eq!(f.click_to_action(5, 12), Some(kb(1)));
assert_eq!(f.click_to_action(5, 13), Some(kb(2)));
}
#[test]
fn slop_resolves_by_nearest_center() {
let mut f = Frame::default();
f.click_regions.push(ClickRegion::tight(5, 10, 13, kb(1)));
for r in 4..=6 {
f.click_regions
.push(ClickRegion::slop(r, 9, 14, kb(1), (11, 5)));
}
f.click_regions.push(ClickRegion::tight(7, 10, 13, kb(2)));
for r in 6..=8 {
f.click_regions
.push(ClickRegion::slop(r, 9, 14, kb(2), (11, 7)));
}
assert_eq!(f.click_to_action(6, 11), Some(kb(1)));
assert_eq!(f.click_to_action(8, 11), Some(kb(2)));
}
#[test]
fn miss_returns_none() {
let mut f = Frame::default();
f.click_regions.push(ClickRegion::tight(5, 10, 13, kb(1)));
f.click_regions
.push(ClickRegion::slop(5, 9, 14, kb(1), (11, 5)));
assert!(f.click_to_action(0, 0).is_none());
assert!(f.click_to_action(5, 20).is_none());
}
}
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