fix(plot): v1.5.1 legend, styles, and seek alignment

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ioai/rosview",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "description": "High-performance robotics data visualization for MCAP, ROS bag, ROS2 db3, HDF5 and BVH — embeddable React component and standalone SPA",
   "keywords": [
     "ros",

src/features/panels/Plot/PlotLegendSettings.tsx

@@ -1,36 +1,46 @@
 import React, { useEffect, useMemo, useRef } from 'react';
 import { useIntl } from 'react-intl';
-import { SettingsSection } from '../framework/settings/SettingsPrimitives';
 import { ScrollArea } from '@/shared/ui/scroll-area';
 import type { PlotConfig } from './defaults';
 import {
   isPlotLegendVisible,
   plotLegendSelectionState,
-  setAllPlotLegendVisible,
+  setPlotLegendGroupVisible,
   setPlotLegendVisible,
 } from './plotLegendVisibility';
 import { usePlotLegendEntries } from './plotPanelRuntimeStore';
 
 interface PlotLegendSettingsProps {
   panelId: string;
+  seriesId: string;
   config: PlotConfig;
   setConfig: (next: PlotConfig | ((prev: PlotConfig) => PlotConfig)) => void;
 }
 
-function legendInputId(panelId: string, index: number): string {
-  return `plot-legend-${panelId}-${index}`;
+function legendKeyPrefix(seriesId: string): string {
+  return `${seriesId}:`;
+}
+
+function legendInputId(panelId: string, seriesId: string, index: number): string {
+  return `plot-legend-${panelId}-${seriesId}-${index}`;
 }
 
 export function PlotLegendSettings({
   panelId,
+  seriesId,
   config,
   setConfig,
 }: PlotLegendSettingsProps): React.ReactNode {
   const { formatMessage } = useIntl();
-  const entries = usePlotLegendEntries(panelId);
+  const allEntries = usePlotLegendEntries(panelId);
+  const prefix = legendKeyPrefix(seriesId);
+  const entries = useMemo(
+    () => allEntries.filter((entry) => entry.key.startsWith(prefix)),
+    [allEntries, prefix],
+  );
   const hiddenKeys = config.hiddenLegendKeys;
   const selectAllRef = useRef<HTMLInputElement>(null);
-  const selectAllId = `plot-legend-${panelId}-all`;
+  const selectAllId = `plot-legend-${panelId}-${seriesId}-all`;
 
   const selection = useMemo(
     () => plotLegendSelectionState(entries, hiddenKeys),
@@ -48,6 +58,10 @@ export function PlotLegendSettings({
     input.indeterminate = selection === 'partial';
   }, [selection]);
 
+  if (entries.length <= 1) {
+    return null;
+  }
+
   const setHiddenKeys = (next: string[]) => {
     setConfig((prev) => ({ ...prev, hiddenLegendKeys: next }));
   };
@@ -57,21 +71,25 @@ export function PlotLegendSettings({
   };
 
   const toggleAll = (visible: boolean) => {
-    setHiddenKeys(setAllPlotLegendVisible(entries.map((entry) => entry.key), visible));
+    setHiddenKeys(
+      setPlotLegendGroupVisible(
+        hiddenKeys,
+        entries.map((entry) => entry.key),
+        visible,
+      ),
+    );
   };
 
   return (
-    <SettingsSection
-      title={formatMessage({ id: 'panels.plot.settings.section.legend' })}
-      description={formatMessage({ id: 'panels.plot.settings.legend.description' })}
-    >
-      {entries.length === 0 ? (
-        <p className="px-1 text-[11px] text-muted-foreground">
-          {formatMessage({ id: 'panels.plot.settings.legend.empty' })}
-        </p>
-      ) : (
-        <>
-          <div className="mb-1.5 flex items-center gap-2 rounded border border-border bg-muted/30 px-2 py-1">
+    <div className="space-y-1 border-t border-border pt-2">
+      <p className="text-[10px] font-medium text-muted-foreground">
+        {formatMessage({ id: 'panels.plot.settings.series.legend.title' })}
+      </p>
+      <p className="px-0.5 text-[10px] text-muted-foreground">
+        {formatMessage({ id: 'panels.plot.settings.legend.description' })}
+      </p>
+      <>
+          <div className="flex items-center gap-2 rounded border border-border bg-muted/30 px-2 py-1">
             <input
               ref={selectAllRef}
               id={selectAllId}
@@ -88,10 +106,10 @@ export function PlotLegendSettings({
               )}
             </label>
           </div>
-          <ScrollArea className="max-h-72 rounded border border-border">
+          <ScrollArea className="max-h-48 rounded border border-border">
             <div className="flex flex-col py-0.5">
               {entries.map((entry, index) => {
-                const inputId = legendInputId(panelId, index);
+                const inputId = legendInputId(panelId, seriesId, index);
                 const visible = isPlotLegendVisible(hiddenKeys, entry.key);
                 return (
                   <label
@@ -111,16 +129,18 @@ export function PlotLegendSettings({
                       style={{ backgroundColor: entry.color }}
                       aria-hidden
                     />
-                    <span className="min-w-0 flex-1 truncate text-[11px] leading-tight text-foreground" title={entry.label}>
+                    <span
+                      className="min-w-0 flex-1 truncate text-[11px] leading-tight text-foreground"
+                      title={entry.label}
+                    >
                       {entry.label}
                     </span>
                   </label>
                 );
               })}
             </div>
           </ScrollArea>
-        </>
-      )}
-    </SettingsSection>
+      </>
+    </div>
   );
 }

src/features/panels/Plot/PlotPanel.tsx

@@ -31,6 +31,9 @@ import { usePlotPanelData } from './usePlotPanelData';
 import { usePlotTopicDetection } from './usePlotTopicDetection';
 import { timeToSec } from '@/core/analysis/timeSeries';
 
+/** Stable empty array for activeTopics when no topics are configured. */
+const EMPTY_TOPICS: string[] = [];
+
 interface PlotPanelProps {
   player: Player;
   panelId: string;
@@ -87,10 +90,14 @@ export const PlotPanel: React.FC<PlotPanelProps> = ({ player, panelId, config, s
 
   const plottableTopics = useMemo(() => filterPlottableTopics(topics), [topics]);
   const topicByName = useMemo(() => buildTopicByName(topics), [topics]);
-  const activeTopics = useMemo(
-    () => selectActivePlotTopics(config, topicByName),
+  const activeTopicsKey = useMemo(
+    () => selectActivePlotTopics(config, topicByName).join('\n'),
     [config, topicByName],
   );
+  const activeTopics = useMemo(
+    () => (activeTopicsKey === '' ? EMPTY_TOPICS : activeTopicsKey.split('\n')),
+    [activeTopicsKey],
+  );
   const hasPlotPaths = useMemo(() => hasConfiguredPlotPaths(config), [config]);
   const hasEnabledSeries = useMemo(() => hasEnabledPlotPaths(config), [config]);
   const primary = selectPrimarySeries(config);
@@ -216,7 +223,10 @@ export const PlotPanel: React.FC<PlotPanelProps> = ({ player, panelId, config, s
   const handleChartClick = (event: React.MouseEvent<HTMLDivElement>) => {
     const chart = uplotRef.current;
     if (!chart || config.xAxisMode !== 'timestamp') return;
-    const rect = chart.root.getBoundingClientRect();
+    // posToVal expects a position relative to the plotting area (the `over`
+    // element), which is what hover/cursor uses. Using `root` here would add the
+    // left Y-axis width as a fixed offset, shifting the seek target to the right.
+    const rect = chart.over.getBoundingClientRect();
     const x = chart.posToVal(event.clientX - rect.left, 'x');
     if (Number.isFinite(x)) {
       player.seek(secToTime(x));

src/features/panels/Plot/PlotPanelSettings.tsx

@@ -142,7 +142,6 @@ export function PlotPanelSettings({
 
   return (
     <div className="space-y-2">
-      <PlotLegendSettings panelId={panelId} config={config} setConfig={setConfig} />
       <SettingsSection title={formatMessage({ id: 'panels.plot.settings.section.plot' })}>
         <SettingsField label={formatMessage({ id: 'panels.plot.settings.field.xAxis' })}>
           <SettingsSelect<PlotXAxisMode>
@@ -353,6 +352,12 @@ export function PlotPanelSettings({
                 }
               />
             </SettingsField>
+            <PlotLegendSettings
+              panelId={panelId}
+              seriesId={series.id}
+              config={config}
+              setConfig={setConfig}
+            />
           </div>
         ))}
         <button

src/features/panels/Plot/plotConfigSelectors.test.ts

@@ -6,6 +6,7 @@ import {
   plotDataConfigKey,
   plotEnabledSeriesIds,
   plotEnabledSeriesKey,
+  plotSeriesVisualKey,
   selectActivePlotTopics,
 } from './plotConfigSelectors';
 import type { TopicInfo } from '@/core/types/ros';
@@ -64,6 +65,52 @@ describe('plotEnabledSeriesKey / plotEnabledSeriesIds', () => {
   });
 });
 
+describe('plotSeriesVisualKey', () => {
+  it('changes when line style or size changes but data key does not', () => {
+    const base = defaultPlotConfig();
+    const a = {
+      ...base,
+      series: [createPlotSeries({ id: 's1', topic: '/a', path: 'data', lineStyle: 'solid', lineSize: 1.5 })],
+    };
+    const b = { ...a, series: [{ ...a.series[0], lineStyle: 'dashed' as const }] };
+    const c = { ...a, series: [{ ...a.series[0], lineSize: 3 }] };
+    expect(plotSeriesVisualKey(a)).not.toBe(plotSeriesVisualKey(b));
+    expect(plotSeriesVisualKey(a)).not.toBe(plotSeriesVisualKey(c));
+    // Visual-only changes must never trigger a range re-read.
+    expect(plotDataConfigKey(a)).toBe(plotDataConfigKey(b));
+    expect(plotDataConfigKey(a)).toBe(plotDataConfigKey(c));
+  });
+
+  it('changes when color or label changes', () => {
+    const base = defaultPlotConfig();
+    const a = {
+      ...base,
+      series: [createPlotSeries({ id: 's1', topic: '/a', path: 'data', color: '#111', label: 'A' })],
+    };
+    const b = { ...a, series: [{ ...a.series[0], color: '#222' }] };
+    const c = { ...a, series: [{ ...a.series[0], label: 'B' }] };
+    expect(plotSeriesVisualKey(a)).not.toBe(plotSeriesVisualKey(b));
+    expect(plotSeriesVisualKey(a)).not.toBe(plotSeriesVisualKey(c));
+  });
+});
+
+describe('legend visibility vs range read', () => {
+  it('does not change active topics key or plotDataConfigKey when hiddenLegendKeys toggles', () => {
+    const base = defaultPlotConfig();
+    const config = {
+      ...base,
+      series: [
+        createPlotSeries({ id: 's1', topic: '/a', path: 'data', enabled: true }),
+        createPlotSeries({ id: 's2', topic: '/b', path: 'data', enabled: true }),
+      ],
+    };
+    const hidden = { ...config, hiddenLegendKeys: ['s1'] };
+    const topicsKey = (c: typeof config) => selectActivePlotTopics(c, topicByName).join('\n');
+    expect(topicsKey(config)).toBe(topicsKey(hidden));
+    expect(plotDataConfigKey(config)).toBe(plotDataConfigKey(hidden));
+  });
+});
+
 describe('selectActivePlotTopics', () => {
   it('includes topics for disabled series too (so toggling does not refetch)', () => {
     const base = defaultPlotConfig();

src/features/panels/Plot/plotConfigSelectors.ts

@@ -97,6 +97,19 @@ export function plotEnabledSeriesIds(config: PlotConfig): Set<string> {
   return new Set(config.series.filter((s) => s.enabled).map((s) => s.id));
 }
 
+/**
+ * Stable key for per-series visual config (label/color/line style/size).
+ *
+ * Changing these should re-render the dataset visuals (a cheap rebuild) but
+ * never trigger a range re-read — that is why it is tracked separately from
+ * {@link plotDataConfigKey}.
+ */
+export function plotSeriesVisualKey(config: PlotConfig): string {
+  return config.series
+    .map((s) => `${s.id}|${s.label}|${s.color}|${s.lineStyle}|${s.lineSize}`)
+    .join(';');
+}
+
 /** Stable key for uPlot series topology (rebuild when this changes). */
 export function plotChartTopologyKey(dataset: {
   series: ReadonlyArray<{

src/features/panels/Plot/plotDatasetAccumulator.test.ts

@@ -161,4 +161,42 @@ describe('PlotDatasetAccumulator', () => {
     const onlyS2 = accumulator.buildDataset(new Set(['s2']));
     expect(onlyS2.series.map((s) => s.key.startsWith('s2:') ? 's2' : 's1')).toEqual(['s2']);
   });
+
+  it('applies live visual config (line style/size/color) at build time without re-ingest', () => {
+    const baseSeries = defaultPlotConfig().series[0];
+    const config = {
+      ...defaultPlotConfig(),
+      downsampleMode: 'none' as const,
+      series: [
+        {
+          ...baseSeries,
+          id: 's1',
+          topic: '/a',
+          path: 'data',
+          timestampMode: 'receiveTime' as const,
+          lineStyle: 'solid' as const,
+          lineSize: 1.5,
+          color: '#111',
+        },
+      ],
+    };
+    const events = [
+      event('/a', 1, { data: 1 }, 'std_msgs/msg/Float64'),
+      event('/a', 2, { data: 2 }, 'std_msgs/msg/Float64'),
+    ];
+
+    const accumulator = new PlotDatasetAccumulator(config);
+    accumulator.append(events);
+
+    // Build with a live config carrying updated visuals (no new data appended).
+    const liveConfig = {
+      ...config,
+      series: [{ ...config.series[0], lineStyle: 'dashed' as const, lineSize: 4, color: '#abcdef' }],
+    };
+    const dataset = accumulator.buildDataset(new Set(['s1']), liveConfig);
+
+    expect(dataset.series[0].lineStyle).toBe('dashed');
+    expect(dataset.series[0].lineSize).toBe(4);
+    expect(dataset.series[0].color).toBe('#abcdef');
+  });
 });