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M7: add data tables beneath charts

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Add command and UI controls for chart data tables, shared chart and PDF rendering, and native XLSX persistence. Cover live values, blanks, formatting, alignment, undo/redo, bounds and table flags with regression tests.

Co-Authored-By: Codex <noreply@openai.com>
This commit is contained in:
campbellcody
2026-11-01 15:30:46 -05:00
co-authored by Codex
parent f5030432fc
commit b6c4500fa7
37 changed files with 560 additions and 18 deletions
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crates/chart/src/render/frame.rs
+13 -4
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@@ -74,12 +74,14 @@ pub(super) enum CatAxis<'a> {
/// Category labels and, for a multi-level axis, the outer levels (nearest the labels first;
/// one entry per category, non-empty where a group starts).
Labels(&'a [String], &'a [Vec<String>]),
/// A data table supplies the labels below a vertical chart. Its stub must clear the plot.
Table(&'a [String], f32),
Numeric(Scale, &'a Fmt),
}
/// Groups of an outer category level: `(first, end)` index pairs, a group starting at every
/// non-empty entry (and at the first category).
fn level_groups(level: &[String], n: usize) -> Vec<(usize, usize)> {
pub(super) fn level_groups(level: &[String], n: usize) -> Vec<(usize, usize)> {
let mut starts: Vec<usize> = (0..n).filter(|&j| j == 0 || level.get(j).is_some_and(|t| !t.is_empty())).collect();
starts.push(n);
starts.windows(2).filter_map(|w| Some((*w.first()?, *w.get(1)?))).collect()
@@ -101,9 +103,13 @@ pub(super) fn frame(ctx: &mut Ctx, area: Bx, cat: CatAxis, y: &ValAxis, y2: Opti
let ls = LABEL_SIZE;
let lh = ls * 1.4;
let ylabels = y.labels();
let stub = match &cat {
CatAxis::Table(_, width) => *width,
_ => 0.0,
};
let maxw = |ctx: &Ctx, l: &[(f64, String)]| l.iter().map(|(_, t)| ctx.tw(t, ls)).fold(0.0f32, f32::max);
if !horizontal {
let left = (maxw(ctx, &ylabels) + 6.0).min(area.w * 0.4);
let left = (maxw(ctx, &ylabels) + 6.0).min(area.w * 0.4).max(stub);
let y2labels = y2.map(ValAxis::labels);
let right = match (&y2labels, &cat) {
(Some(l), _) => (maxw(ctx, l) + 6.0).min(area.w * 0.3),
@@ -112,7 +118,7 @@ pub(super) fn frame(ctx: &mut Ctx, area: Bx, cat: CatAxis, y: &ValAxis, y2: Opti
};
let levels = match &cat {
CatAxis::Labels(_, o) => o.len() as f32,
CatAxis::Numeric(..) => 0.0,
CatAxis::Numeric(..) | CatAxis::Table(..) => 0.0,
};
let plot = Bx { x: area.x + left, y: area.y + lh * 0.5, w: area.w - left - right, h: area.h - lh * 1.5 - 4.0 - lh * levels };
if !plot.ok() {
@@ -135,6 +141,7 @@ pub(super) fn frame(ctx: &mut Ctx, area: Bx, cat: CatAxis, y: &ValAxis, y2: Opti
let y0 = plot.bottom() - y.scale.frac(zero) * plot.h;
ctx.hline(plot.x, plot.right(), y0, AXIS, 0.75);
match cat {
CatAxis::Table(..) => {}
CatAxis::Labels(l, outer) => {
let n = l.len().max(1);
let cw = plot.w / n as f32;
@@ -181,6 +188,7 @@ pub(super) fn frame(ctx: &mut Ctx, area: Bx, cat: CatAxis, y: &ValAxis, y2: Opti
} else {
let (labels, outer): (Vec<String>, &[Vec<String>]) = match cat {
CatAxis::Labels(l, o) => (l.to_vec(), o),
CatAxis::Table(l, _) => (l.to_vec(), &[]),
CatAxis::Numeric(..) => (vec![], &[]),
};
let lw = (labels.iter().take(2000).map(|t| ctx.tw(t, ls)).fold(0.0f32, f32::max) + 6.0).min(area.w * 0.35);
@@ -189,7 +197,8 @@ pub(super) fn frame(ctx: &mut Ctx, area: Bx, cat: CatAxis, y: &ValAxis, y2: Opti
outer.iter().map(|l| (l.iter().take(2000).map(|t| ctx.tw(t, ls)).fold(0.0f32, f32::max) + 6.0).min(area.w * 0.15)).collect();
let levels_w: f32 = level_w.iter().sum();
let right = ylabels.last().map(|(_, t)| ctx.tw(t, ls) / 2.0).unwrap_or(0.0).min(area.w * 0.2) + 2.0;
let plot = Bx { x: area.x + lw + levels_w, y: area.y + 2.0, w: area.w - lw - levels_w - right, h: area.h - lh - 6.0 };
let left = (lw + levels_w).max(stub);
let plot = Bx { x: area.x + left, y: area.y + 2.0, w: area.w - left - right, h: area.h - lh - 6.0 };
if !plot.ok() {
return plot;
}