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feat: responsive charts with timestamp tooltips
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Charts (LineChart, AreaChart, BarChart) now fill their container
width instead of using a fixed 400px default. SVGs use width=100%
with preserveAspectRatio=none.

LineChart and AreaChart tooltips now show the data point timestamp
when x-values are Date objects, displayed as a header row above
the series values.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
hsiegeln
2026-04-12 18:50:50 +02:00
parent 8b32fe3994
commit 232868b9e7
7 changed files with 59 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
package.json
View File

@@ -1,6 +1,6 @@
{
"name": "@cameleer/design-system",
"version": "0.1.45",
"version": "0.1.46",
"type": "module",
"main": "./dist/index.es.js",
"module": "./dist/index.es.js",

12
src/design-system/composites/AreaChart/AreaChart.module.css
View File

@@ -1,8 +1,9 @@
.wrapper {
position: relative;
display: inline-flex;
display: flex;
flex-direction: column;
gap: 4px;
width: 100%;
}
.svg {
@@ -78,6 +79,15 @@
white-space: nowrap;
}
.tooltipTime {
font-family: var(--font-mono);
font-size: 10px;
color: var(--text-muted);
margin-bottom: 4px;
padding-bottom: 3px;
border-bottom: 1px solid var(--border-subtle);
}
.tooltipRow {
display: flex;
align-items: center;

18
src/design-system/composites/AreaChart/AreaChart.tsx
View File

@@ -45,6 +45,7 @@ export function AreaChart({
const [tooltip, setTooltip] = useState<{
x: number
y: number
xLabel: string
values: { label: string; value: number; color: string }[]
} | null>(null)
@@ -84,6 +85,15 @@ export function AreaChart({
// Find closest x value
const pctX = (mx - dims.paddingLeft) / plotW
const firstS = series[0]
const idx0 = Math.max(0, Math.min(firstS.data.length - 1, Math.round(pctX * (firstS.data.length - 1))))
const xVal = firstS.data[idx0]?.x
const xLabel = xVal instanceof Date
? xVal.toLocaleString([], { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit', second: '2-digit' })
: typeof xVal === 'number' && xVal > 1e10
? new Date(xVal).toLocaleString([], { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit', second: '2-digit' })
: String(xVal ?? '')
const values = series.map((s, i) => {
const idx = Math.round(pctX * (s.data.length - 1))
const clamped = Math.max(0, Math.min(s.data.length - 1, idx))
@@ -95,16 +105,17 @@ export function AreaChart({
}
})
setTooltip({ x: mx, y: my, values })
setTooltip({ x: mx, y: my, xLabel, values })
}
return (
<div className={`${styles.wrapper} ${className ?? ''}`}>
{yLabel && <div className={styles.yLabel}>{yLabel}</div>}
<svg
width={width}
width="100%"
height={height}
viewBox={`0 0 ${width} ${height}`}
preserveAspectRatio="none"
className={styles.svg}
onMouseMove={handleMouseMove}
onMouseLeave={() => setTooltip(null)}
@@ -223,6 +234,9 @@ export function AreaChart({
top: tooltip.y,
}}
>
{tooltip.xLabel && (
<div className={styles.tooltipTime}>{tooltip.xLabel}</div>
)}
{tooltip.values.map((v) => (
<div key={v.label} className={styles.tooltipRow}>
<span className={styles.tooltipDot} style={{ background: v.color }} />

3
src/design-system/composites/BarChart/BarChart.module.css
View File

@@ -1,8 +1,9 @@
.wrapper {
position: relative;
display: inline-flex;
display: flex;
flex-direction: column;
gap: 4px;
width: 100%;
}
.svg {

3
src/design-system/composites/BarChart/BarChart.tsx
View File

@@ -101,9 +101,10 @@ export function BarChart({
<div className={`${styles.wrapper} ${className ?? ''}`}>
{yLabel && <div className={styles.yLabel}>{yLabel}</div>}
<svg
width={width}
width="100%"
height={height}
viewBox={`0 0 ${width} ${height}`}
preserveAspectRatio="none"
className={styles.svg}
onMouseLeave={() => setTooltip(null)}
aria-label="Bar chart"

12
src/design-system/composites/LineChart/LineChart.module.css
View File

@@ -1,8 +1,9 @@
.wrapper {
position: relative;
display: inline-flex;
display: flex;
flex-direction: column;
gap: 4px;
width: 100%;
}
.svg {
@@ -69,6 +70,15 @@
white-space: nowrap;
}
.tooltipTime {
font-family: var(--font-mono);
font-size: 10px;
color: var(--text-muted);
margin-bottom: 4px;
padding-bottom: 3px;
border-bottom: 1px solid var(--border-subtle);
}
.tooltipRow {
display: flex;
align-items: center;

18
src/design-system/composites/LineChart/LineChart.tsx
View File

@@ -44,6 +44,7 @@ export function LineChart({
const [tooltip, setTooltip] = useState<{
x: number
y: number
xLabel: string
values: { label: string; value: number; color: string }[]
} | null>(null)
@@ -80,6 +81,15 @@ export function LineChart({
const my = e.clientY - rect.top
const pctX = (mx - dims.paddingLeft) / plotW
const firstS = series[0]
const idx0 = Math.max(0, Math.min(firstS.data.length - 1, Math.round(pctX * (firstS.data.length - 1))))
const xVal = firstS.data[idx0]?.x
const xLabel = xVal instanceof Date
? xVal.toLocaleString([], { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit', second: '2-digit' })
: typeof xVal === 'number' && xVal > 1e10
? new Date(xVal).toLocaleString([], { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit', second: '2-digit' })
: String(xVal ?? '')
const values = series.map((s, i) => {
const idx = Math.round(pctX * (s.data.length - 1))
const clamped = Math.max(0, Math.min(s.data.length - 1, idx))
@@ -91,16 +101,17 @@ export function LineChart({
}
})
setTooltip({ x: mx, y: my, values })
setTooltip({ x: mx, y: my, xLabel, values })
}
return (
<div className={`${styles.wrapper} ${className ?? ''}`}>
{yLabel && <div className={styles.yLabel}>{yLabel}</div>}
<svg
width={width}
width="100%"
height={height}
viewBox={`0 0 ${width} ${height}`}
preserveAspectRatio="none"
className={styles.svg}
onMouseMove={handleMouseMove}
onMouseLeave={() => setTooltip(null)}
@@ -202,6 +213,9 @@ export function LineChart({
className={styles.tooltip}
style={{ left: tooltip.x + 12, top: tooltip.y }}
>
{tooltip.xLabel && (
<div className={styles.tooltipTime}>{tooltip.xLabel}</div>
)}
{tooltip.values.map((v) => (
<div key={v.label} className={styles.tooltipRow}>
<span className={styles.tooltipDot} style={{ background: v.color }} />