feat: Option to zoom out OR reset zoom in the explorer pages (#10464)

* feat: zoom out func ladder added

* feat: zoom out feature with testcases

* fix: comments resolved moved to signoz btn added testcase for querydelete

* feat: updated btn compoent to use prefix icon

* feat: historical enddate preset as null to preserve custom

* fix: cursor bot callback and localstorage

* feat: common util for local storage

* feat: rename and testcase

* feat: avoid persist for non preset

deploy/docker-swarm/docker-compose.ha.yaml

@@ -190,7 +190,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:v0.114.1
+    image: signoz/signoz:v0.115.0
     ports:
       - "8080:8080" # signoz port
     #   - "6060:6060"     # pprof port

deploy/docker-swarm/docker-compose.yaml

@@ -117,7 +117,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:v0.114.1
+    image: signoz/signoz:v0.115.0
     ports:
       - "8080:8080" # signoz port
     volumes:

deploy/docker/docker-compose.ha.yaml

@@ -181,7 +181,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:${VERSION:-v0.114.1}
+    image: signoz/signoz:${VERSION:-v0.115.0}
     container_name: signoz
     ports:
       - "8080:8080" # signoz port

deploy/docker/docker-compose.yaml

@@ -109,7 +109,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:${VERSION:-v0.114.1}
+    image: signoz/signoz:${VERSION:-v0.115.0}
     container_name: signoz
     ports:
       - "8080:8080" # signoz port

frontend/src/components/CustomTimePicker/CustomTimePicker.styles.scss

@@ -1,6 +1,31 @@
 .custom-time-picker {
 	display: flex;
-	flex-direction: column;
+	flex-direction: row;
+	align-items: center;
+	gap: 4px;
+
+	.zoom-out-btn {
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		flex-shrink: 0;
+		color: var(--foreground);
+		border: 1px solid var(--border);
+		border-radius: 2px;
+		box-shadow: none;
+		padding: 10px;
+		height: 33px;
+
+		&:hover:not(:disabled) {
+			color: var(--bg-vanilla-100);
+			background: var(--primary);
+		}
+
+		&:disabled {
+			opacity: 0.5;
+			cursor: not-allowed;
+		}
+	}
 
 	.timeSelection-input {
 		&:hover {

frontend/src/components/CustomTimePicker/CustomTimePicker.test.tsx

@@ -16,6 +16,15 @@ jest.mock('react-router-dom', () => {
 	};
 });
 
+jest.mock('react-redux', () => ({
+	...jest.requireActual('react-redux'),
+	useDispatch: jest.fn(() => jest.fn()),
+	useSelector: jest.fn(() => ({
+		minTime: 0,
+		maxTime: Date.now(),
+	})),
+}));
+
 jest.mock('providers/Timezone', () => {
 	const actual = jest.requireActual('providers/Timezone');
 

frontend/src/components/CustomTimePicker/CustomTimePicker.tsx

@@ -7,9 +7,11 @@ import {
 	useState,
 } from 'react';
 import { useLocation } from 'react-router-dom';
+import { Button } from '@signozhq/button';
 import { Input, InputRef, Popover, Tooltip } from 'antd';
 import cx from 'classnames';
 import { DATE_TIME_FORMATS } from 'constants/dateTimeFormats';
+import { QueryParams } from 'constants/query';
 import { DateTimeRangeType } from 'container/TopNav/CustomDateTimeModal';
 import {
 	FixedDurationSuggestionOptions,
@@ -17,9 +19,11 @@ import {
 	RelativeDurationSuggestionOptions,
 } from 'container/TopNav/DateTimeSelectionV2/constants';
 import dayjs from 'dayjs';
+import { useZoomOut } from 'hooks/useZoomOut';
 import { isValidShortHandDateTimeFormat } from 'lib/getMinMax';
+import { isZoomOutDisabled } from 'lib/zoomOutUtils';
 import { defaultTo, isFunction, noop } from 'lodash-es';
-import { ChevronDown, ChevronUp } from 'lucide-react';
+import { ChevronDown, ChevronUp, ZoomOut } from 'lucide-react';
 import { useTimezone } from 'providers/Timezone';
 import { getTimeDifference, validateEpochRange } from 'utils/epochUtils';
 import { popupContainer } from 'utils/selectPopupContainer';
@@ -66,6 +70,8 @@ interface CustomTimePickerProps {
 	showRecentlyUsed?: boolean;
 	minTime: number;
 	maxTime: number;
+	/** When true, zoom-out button is hidden (e.g. in drawer/modal time selection) */
+	isModalTimeSelection?: boolean;
 }
 
 function CustomTimePicker({
@@ -88,6 +94,7 @@ function CustomTimePicker({
 	showRecentlyUsed = true,
 	minTime,
 	maxTime,
+	isModalTimeSelection = false,
 }: CustomTimePickerProps): JSX.Element {
 	const [
 		selectedTimePlaceholderValue,
@@ -116,6 +123,14 @@ function CustomTimePicker({
 
 	const [isOpenedFromFooter, setIsOpenedFromFooter] = useState(false);
 
+	const durationMs = (maxTime - minTime) / 1e6;
+	const zoomOutDisabled = showLiveLogs || isZoomOutDisabled(durationMs);
+
+	const handleZoomOut = useZoomOut({
+		isDisabled: zoomOutDisabled,
+		urlParamsToDelete: [QueryParams.activeLogId],
+	});
+
 	// function to get selected time in Last 1m, Last 2h, Last 3d, Last 4w format
 	// 1m, 2h, 3d, 4w -> Last 1 minute, Last 2 hours, Last 3 days, Last 4 weeks
 	const getSelectedTimeRangeLabelInRelativeFormat = (
@@ -631,6 +646,23 @@ function CustomTimePicker({
 					/>
 				</Popover>
 			</Tooltip>
+			{!showLiveLogs && !isModalTimeSelection && (
+				<Tooltip
+					title={
+						zoomOutDisabled ? 'Zoom out time range is limited to 1 month' : 'Zoom out'
+					}
+				>
+					<span>
+						<Button
+							className="zoom-out-btn"
+							onClick={handleZoomOut}
+							disabled={zoomOutDisabled}
+							data-testid="zoom-out-btn"
+							prefixIcon={<ZoomOut size={14} />}
+						/>
+					</span>
+				</Tooltip>
+			)}
 		</div>
 	);
 }

frontend/src/components/CustomTimePicker/__tests__/customTimePickerZoomOut.test.tsx

@@ -0,0 +1,169 @@
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { QueryParams } from 'constants/query';
+import { GlobalReducer } from 'types/reducer/globalTime';
+
+import CustomTimePicker from '../CustomTimePicker';
+
+const MS_PER_MIN = 60 * 1000;
+const NOW_MS = 1705312800000;
+
+const mockDispatch = jest.fn();
+const mockSafeNavigate = jest.fn();
+const mockUrlQueryDelete = jest.fn();
+const mockUrlQuerySet = jest.fn();
+
+interface MockAppState {
+	globalTime: Pick<GlobalReducer, 'minTime' | 'maxTime'>;
+}
+
+jest.mock('react-redux', () => ({
+	useDispatch: (): jest.Mock => mockDispatch,
+	useSelector: (selector: (state: MockAppState) => unknown): unknown => {
+		const mockState: MockAppState = {
+			globalTime: {
+				minTime: (NOW_MS - 15 * MS_PER_MIN) * 1e6,
+				maxTime: NOW_MS * 1e6,
+			},
+		};
+		return selector(mockState);
+	},
+}));
+
+jest.mock('hooks/useSafeNavigate', () => ({
+	useSafeNavigate: (): { safeNavigate: jest.Mock } => ({
+		safeNavigate: mockSafeNavigate,
+	}),
+}));
+
+interface MockUrlQuery {
+	delete: typeof mockUrlQueryDelete;
+	set: typeof mockUrlQuerySet;
+	get: () => null;
+	toString: () => string;
+}
+
+jest.mock('hooks/useUrlQuery', () => ({
+	__esModule: true,
+	default: (): MockUrlQuery => ({
+		delete: mockUrlQueryDelete,
+		set: mockUrlQuerySet,
+		get: (): null => null,
+		toString: (): string => 'relativeTime=45m',
+	}),
+}));
+
+jest.mock('providers/Timezone', () => ({
+	useTimezone: (): { timezone: { value: string; offset: string } } => ({
+		timezone: { value: 'UTC', offset: 'UTC' },
+	}),
+}));
+
+jest.mock('react-router-dom', () => ({
+	useLocation: (): { pathname: string } => ({ pathname: '/logs-explorer' }),
+}));
+
+const MS_PER_DAY = 24 * 60 * 60 * 1000;
+const now = Date.now();
+const defaultProps = {
+	onSelect: jest.fn(),
+	onError: jest.fn(),
+	selectedValue: '15m',
+	selectedTime: '15m',
+	onValidCustomDateChange: jest.fn(),
+	open: false,
+	setOpen: jest.fn(),
+	items: [
+		{ value: '15m', label: 'Last 15 minutes' },
+		{ value: '1h', label: 'Last 1 hour' },
+	],
+	minTime: (now - 15 * 60 * 1000) * 1e6,
+	maxTime: now * 1e6,
+};
+
+describe('CustomTimePicker - zoom out button', () => {
+	beforeEach(() => {
+		jest.clearAllMocks();
+		jest.spyOn(Date, 'now').mockReturnValue(NOW_MS);
+	});
+
+	afterEach(() => {
+		jest.restoreAllMocks();
+	});
+
+	it('should render zoom out button when showLiveLogs is false', () => {
+		render(<CustomTimePicker {...defaultProps} showLiveLogs={false} />);
+
+		expect(screen.getByTestId('zoom-out-btn')).toBeInTheDocument();
+	});
+
+	it('should not render zoom out button when showLiveLogs is true', () => {
+		render(<CustomTimePicker {...defaultProps} showLiveLogs={true} />);
+
+		expect(screen.queryByTestId('zoom-out-btn')).not.toBeInTheDocument();
+	});
+
+	it('should not render zoom out button when isModalTimeSelection is true', () => {
+		render(
+			<CustomTimePicker
+				{...defaultProps}
+				showLiveLogs={false}
+				isModalTimeSelection={true}
+			/>,
+		);
+
+		expect(screen.queryByTestId('zoom-out-btn')).not.toBeInTheDocument();
+	});
+
+	it('should call handleZoomOut when zoom out button is clicked', async () => {
+		render(<CustomTimePicker {...defaultProps} showLiveLogs={false} />);
+
+		const zoomOutBtn = screen.getByTestId('zoom-out-btn');
+		await userEvent.click(zoomOutBtn);
+
+		expect(mockDispatch).toHaveBeenCalled();
+		expect(mockUrlQuerySet).toHaveBeenCalledWith(QueryParams.relativeTime, '45m');
+		expect(mockSafeNavigate).toHaveBeenCalledWith(
+			expect.stringMatching(/\/logs-explorer\?relativeTime=45m/),
+		);
+	});
+
+	it('should use real ladder logic: 15m range zooms to 45m preset and updates URL', async () => {
+		render(<CustomTimePicker {...defaultProps} showLiveLogs={false} />);
+
+		const zoomOutBtn = screen.getByTestId('zoom-out-btn');
+		await userEvent.click(zoomOutBtn);
+
+		expect(mockUrlQueryDelete).toHaveBeenCalledWith(QueryParams.startTime);
+		expect(mockUrlQueryDelete).toHaveBeenCalledWith(QueryParams.endTime);
+		expect(mockUrlQuerySet).toHaveBeenCalledWith(QueryParams.relativeTime, '45m');
+		expect(mockSafeNavigate).toHaveBeenCalledWith(
+			expect.stringMatching(/\/logs-explorer\?relativeTime=45m/),
+		);
+		expect(mockDispatch).toHaveBeenCalled();
+	});
+
+	it('should delete activeLogId when zoom out is clicked', async () => {
+		render(<CustomTimePicker {...defaultProps} showLiveLogs={false} />);
+
+		const zoomOutBtn = screen.getByTestId('zoom-out-btn');
+		await userEvent.click(zoomOutBtn);
+
+		expect(mockUrlQueryDelete).toHaveBeenCalledWith(QueryParams.activeLogId);
+	});
+
+	it('should disable zoom button when time range is >= 1 month', () => {
+		const now = Date.now();
+		render(
+			<CustomTimePicker
+				{...defaultProps}
+				minTime={(now - 31 * MS_PER_DAY) * 1e6}
+				maxTime={now * 1e6}
+				showLiveLogs={false}
+			/>,
+		);
+
+		const zoomOutBtn = screen.getByTestId('zoom-out-btn');
+		expect(zoomOutBtn).toBeDisabled();
+	});
+});

frontend/src/components/TimelineV3/TimelineV3.styles.scss

@@ -1,4 +0,0 @@
-.timeline-v3-container {
-	// flex: 1;
-	overflow: visible;
-}

frontend/src/components/TimelineV3/TimelineV3.tsx

@@ -1,87 +0,0 @@
-import { useEffect, useState } from 'react';
-import { useMeasure } from 'react-use';
-import { useIsDarkMode } from 'hooks/useDarkMode';
-
-import {
-	getIntervals,
-	getMinimumIntervalsBasedOnWidth,
-	Interval,
-} from './utils';
-
-import './TimelineV3.styles.scss';
-
-interface ITimelineV3Props {
-	startTimestamp: number;
-	endTimestamp: number;
-	timelineHeight: number;
-	offsetTimestamp: number;
-}
-
-function TimelineV3(props: ITimelineV3Props): JSX.Element {
-	const {
-		startTimestamp,
-		endTimestamp,
-		timelineHeight,
-		offsetTimestamp,
-	} = props;
-	const [intervals, setIntervals] = useState<Interval[]>([]);
-	const [ref, { width }] = useMeasure<HTMLDivElement>();
-	const isDarkMode = useIsDarkMode();
-
-	useEffect(() => {
-		const spread = endTimestamp - startTimestamp;
-		if (spread < 0) {
-			return;
-		}
-
-		const minIntervals = getMinimumIntervalsBasedOnWidth(width);
-		const intervalisedSpread = (spread / minIntervals) * 1.0;
-		const intervals = getIntervals(intervalisedSpread, spread, offsetTimestamp);
-
-		setIntervals(intervals);
-	}, [startTimestamp, endTimestamp, width, offsetTimestamp]);
-
-	if (endTimestamp < startTimestamp) {
-		console.error(
-			'endTimestamp cannot be less than startTimestamp',
-			startTimestamp,
-			endTimestamp,
-		);
-		return <div />;
-	}
-
-	const strokeColor = isDarkMode ? ' rgb(192,193,195,0.8)' : 'black';
-
-	return (
-		<div ref={ref as never} className="timeline-v3-container">
-			<svg
-				width={width}
-				height={timelineHeight * 2.5}
-				xmlns="http://www.w3.org/2000/svg"
-				overflow="visible"
-			>
-				{intervals &&
-					intervals.length > 0 &&
-					intervals.map((interval, index) => (
-						<g
-							transform={`translate(${(interval.percentage * width) / 100},0)`}
-							key={`${interval.percentage + interval.label + index}`}
-							textAnchor="middle"
-							fontSize="0.6rem"
-						>
-							<text
-								x={index === intervals.length - 1 ? -10 : 0}
-								y={timelineHeight * 2}
-								fill={strokeColor}
-							>
-								{interval.label}
-							</text>
-							<line y1={0} y2={timelineHeight} stroke={strokeColor} strokeWidth="1" />
-						</g>
-					))}
-			</svg>
-		</div>
-	);
-}
-
-export default TimelineV3;

frontend/src/components/TimelineV3/utils.ts

@@ -1,93 +0,0 @@
-import {
-	IIntervalUnit,
-	Interval,
-	INTERVAL_UNITS,
-	resolveTimeFromInterval,
-} from 'components/TimelineV2/utils';
-import { toFixed } from 'utils/toFixed';
-
-export type { Interval };
-
-/** Fewer intervals than TimelineV2 for a cleaner flamegraph ruler. */
-export function getMinimumIntervalsBasedOnWidth(width: number): number {
-	if (width < 640) {
-		return 3;
-	}
-	if (width < 768) {
-		return 4;
-	}
-	if (width < 1024) {
-		return 5;
-	}
-	return 6;
-}
-
-/**
- * Computes timeline intervals with offset-aware labels.
- * Labels reflect absolute time from trace start (offsetTimestamp + elapsed),
- * so when zoomed into a window, the first tick shows e.g. "50ms" not "0ms".
- */
-export function getIntervals(
-	intervalSpread: number,
-	baseSpread: number,
-	offsetTimestamp: number,
-): Interval[] {
-	const integerPartString = intervalSpread.toString().split('.')[0];
-	const integerPartLength = integerPartString.length;
-
-	const intervalSpreadNormalized =
-		intervalSpread < 1.0
-			? intervalSpread
-			: Math.floor(Number(integerPartString) / 10 ** (integerPartLength - 1)) *
-			  10 ** (integerPartLength - 1);
-
-	// Unit must suit both: (1) tick granularity (intervalSpread) and (2) label magnitude
-	// (offsetTimestamp). When zoomed deep into a trace, labels show offsetTimestamp + elapsed,
-	// so we must pick a unit where that value is readable (e.g. "500.00s" not "500000.00ms").
-	const valueForUnitSelection = Math.max(offsetTimestamp, intervalSpread);
-	let intervalUnit: IIntervalUnit = INTERVAL_UNITS[0];
-	for (let idx = INTERVAL_UNITS.length - 1; idx >= 0; idx -= 1) {
-		const standardInterval = INTERVAL_UNITS[idx];
-		if (valueForUnitSelection * standardInterval.multiplier >= 1) {
-			intervalUnit = INTERVAL_UNITS[idx];
-			break;
-		}
-	}
-
-	const intervals: Interval[] = [
-		{
-			label: `${toFixed(
-				resolveTimeFromInterval(offsetTimestamp, intervalUnit),
-				2,
-			)}${intervalUnit.name}`,
-			percentage: 0,
-		},
-	];
-
-	let tempBaseSpread = baseSpread;
-	let elapsedIntervals = 0;
-
-	while (tempBaseSpread && intervals.length < 20) {
-		let intervalTime: number;
-
-		if (tempBaseSpread <= 1.5 * intervalSpreadNormalized) {
-			intervalTime = elapsedIntervals + tempBaseSpread;
-			tempBaseSpread = 0;
-		} else {
-			intervalTime = elapsedIntervals + intervalSpreadNormalized;
-			tempBaseSpread -= intervalSpreadNormalized;
-		}
-
-		elapsedIntervals = intervalTime;
-		const labelTime = offsetTimestamp + intervalTime;
-
-		intervals.push({
-			label: `${toFixed(resolveTimeFromInterval(labelTime, intervalUnit), 2)}${
-				intervalUnit.name
-			}`,
-			percentage: (intervalTime / baseSpread) * 100,
-		});
-	}
-
-	return intervals;
-}

frontend/src/constants/theme.ts

@@ -33,125 +33,6 @@ const themeColors = {
 		purple: '#800080',
 		cyan: '#00FFFF',
 	},
-	traceDetailColorsV3: {
-		// Blues
-		dodgerBlue: '#2F80ED',
-		royalBlue: '#3366E6',
-		steelBlue: '#4682B4',
-
-		// Teals / Cyans
-		turquoise: '#00CEC9',
-		lagoon: '#1ABC9C',
-		cyanBright: '#22A6F2',
-
-		// Greens
-		emeraldGreen: '#27AE60',
-		mediumSeaGreen: '#3CB371',
-		limeGreen: '#A3E635',
-
-		// Yellows / Golds
-		festivalYellow: '#F2C94C',
-		sunflower: '#FFD93D',
-		warmAmber: '#FFCA28',
-
-		// Purples / Violets
-		mediumPurple: '#BB6BD9',
-		royalPurple: '#9B51E0',
-		orchid: '#DA77F2',
-
-		// Accent
-		neonViolet: '#C77DFF',
-		electricPurple: '#6C5CE7',
-		arcticBlue: '#48DBFB',
-
-		// Blues extended
-		blue1: '#1F63E0',
-		blue2: '#3A7AED',
-		blue3: '#5A9DF5',
-		blue4: '#2874A6',
-		blue5: '#2E86C1',
-		blue6: '#3498DB',
-
-		// Cyans
-		cyan1: '#00B0AA',
-		cyan2: '#33D6C2',
-		cyan3: '#66E9DA',
-
-		// Greens extended
-		green1: '#1E8449',
-		green2: '#2ECC71',
-		green3: '#58D68D',
-		green4: '#229954',
-		green5: '#27AE60',
-		green6: '#52BE80',
-
-		// Forest
-		forest1: '#27AE60',
-		forest2: '#2ECC71',
-		forest3: '#58D68D',
-
-		// Lime
-		lime1: '#A3E635',
-		lime2: '#B9F18D',
-		lime3: '#D4FFB0',
-
-		// Teals
-		teal1: '#009688',
-		teal2: '#1ABC9C',
-		teal3: '#48C9B0',
-		teal4: '#1ABC9C',
-		teal5: '#48C9B0',
-		teal6: '#76D7C4',
-
-		// Yellows
-		yellow1: '#F1C40F',
-		yellow2: '#F7DC6F',
-		yellow3: '#F9E79F',
-
-		// Gold
-		gold1: '#F39C12',
-		gold2: '#F1C40F',
-		gold3: '#F7DC6F',
-		gold4: '#B7950B',
-		gold5: '#F1C40F',
-		gold6: '#F4D03F',
-
-		// Mustard
-		mustard1: '#F1C40F',
-		mustard2: '#F7DC6F',
-		mustard3: '#F9E79F',
-
-		// Aqua
-		aqua1: '#00BFFF',
-		aqua2: '#1E90FF',
-		aqua3: '#63B8FF',
-
-		// Purple extended
-		purple1: '#8E44AD',
-		purple2: '#9B59B6',
-		purple3: '#BB8FCE',
-
-		violet1: '#8E44AD',
-		violet2: '#9B59B6',
-		violet3: '#BB8FCE',
-		violet4: '#7D3C98',
-		violet5: '#8E44AD',
-		violet6: '#9B59B6',
-
-		// Lavender
-		lavender1: '#9B59B6',
-		lavender2: '#AF7AC5',
-		lavender3: '#C39BD3',
-
-		// Oranges (safe ones, not red-ish)
-		orange4: '#D35400',
-		orange5: '#E67E22',
-		orange6: '#EB984E',
-
-		coral1: '#E67E22',
-		coral2: '#F39C12',
-		coral3: '#F5B041',
-	},
 	chartcolors: {
 		// Blues (3)
 		dodgerBlue: '#2F80ED',

frontend/src/container/LogsExplorerChart/__tests__/frequencyGraphColor.test.ts

@@ -4,8 +4,8 @@ import { getColorsForSeverityLabels, isRedLike } from '../utils';
 
 describe('getColorsForSeverityLabels', () => {
 	it('should return slate for blank labels', () => {
-		expect(getColorsForSeverityLabels('', 0)).toBe(Color.BG_SLATE_300);
-		expect(getColorsForSeverityLabels('   ', 0)).toBe(Color.BG_SLATE_300);
+		expect(getColorsForSeverityLabels('', 0)).toBe(Color.BG_VANILLA_400);
+		expect(getColorsForSeverityLabels('   ', 0)).toBe(Color.BG_VANILLA_400);
 	});
 
 	it('should return correct colors for known severity variants', () => {

frontend/src/container/LogsExplorerChart/utils.ts

@@ -79,7 +79,7 @@ export function getColorsForSeverityLabels(
 	const trimmed = label.trim();
 
 	if (!trimmed) {
-		return Color.BG_SLATE_300;
+		return Color.BG_VANILLA_400; // Default color for empty labels
 	}
 
 	const variantColor = SEVERITY_VARIANT_COLORS[trimmed];
@@ -119,6 +119,6 @@ export function getColorsForSeverityLabels(
 
 	return (
 		SAFE_FALLBACK_COLORS[index % SAFE_FALLBACK_COLORS.length] ||
-		Color.BG_SLATE_400
+		Color.BG_VANILLA_400
 	);
 }

frontend/src/container/TopNav/DateTimeSelectionV2/index.tsx

@@ -30,6 +30,7 @@ import { AppState } from 'store/reducers';
 import AppActions from 'types/actions';
 import { GlobalReducer } from 'types/reducer/globalTime';
 import { addCustomTimeRange } from 'utils/customTimeRangeUtils';
+import { persistTimeDurationForRoute } from 'utils/metricsTimeStorageUtils';
 import { normalizeTimeToMs } from 'utils/timeUtils';
 import { v4 as uuid } from 'uuid';
 
@@ -234,20 +235,7 @@ function DateTimeSelection({
 
 	const updateLocalStorageForRoutes = useCallback(
 		(value: Time | string): void => {
-			const preRoutes = getLocalStorageKey(LOCALSTORAGE.METRICS_TIME_IN_DURATION);
-			if (preRoutes !== null) {
-				const preRoutesObject = JSON.parse(preRoutes);
-
-				const preRoute = {
-					...preRoutesObject,
-				};
-				preRoute[location.pathname] = value;
-
-				setLocalStorageKey(
-					LOCALSTORAGE.METRICS_TIME_IN_DURATION,
-					JSON.stringify(preRoute),
-				);
-			}
+			persistTimeDurationForRoute(location.pathname, String(value));
 		},
 		[location.pathname],
 	);
@@ -738,6 +726,7 @@ function DateTimeSelection({
 						showRecentlyUsed={showRecentlyUsed}
 						minTime={minTimeForDateTimePicker}
 						maxTime={maxTimeForDateTimePicker}
+						isModalTimeSelection={isModalTimeSelection}
 					/>
 
 					{showAutoRefresh && selectedTime !== 'custom' && (

frontend/src/hooks/__tests__/useZoomOut.test.ts

@@ -0,0 +1,160 @@
+import { act, renderHook } from '@testing-library/react';
+import { QueryParams } from 'constants/query';
+import { GlobalReducer } from 'types/reducer/globalTime';
+
+import { useZoomOut } from '../useZoomOut';
+
+const mockDispatch = jest.fn();
+const mockSafeNavigate = jest.fn();
+const mockUrlQueryDelete = jest.fn();
+const mockUrlQuerySet = jest.fn();
+const mockUrlQueryToString = jest.fn(() => '');
+
+interface MockAppState {
+	globalTime: Pick<GlobalReducer, 'minTime' | 'maxTime'>;
+}
+
+jest.mock('react-redux', () => ({
+	useDispatch: (): jest.Mock => mockDispatch,
+	useSelector: <T>(selector: (state: MockAppState) => T): T => {
+		const mockState: MockAppState = {
+			globalTime: {
+				minTime: 15 * 60 * 1000 * 1e6, // 15 min in nanoseconds
+				maxTime: 30 * 60 * 1000 * 1e6, // 30 min in nanoseconds (mock for getNextZoomOutRange)
+			},
+		};
+		return selector(mockState);
+	},
+}));
+
+jest.mock('react-router-dom', () => ({
+	useLocation: (): { pathname: string } => ({ pathname: '/logs-explorer' }),
+}));
+
+jest.mock('hooks/useSafeNavigate', () => ({
+	useSafeNavigate: (): { safeNavigate: typeof mockSafeNavigate } => ({
+		safeNavigate: mockSafeNavigate,
+	}),
+}));
+
+interface MockUrlQuery {
+	delete: typeof mockUrlQueryDelete;
+	set: typeof mockUrlQuerySet;
+	get: () => null;
+	toString: typeof mockUrlQueryToString;
+}
+
+jest.mock('hooks/useUrlQuery', () => ({
+	__esModule: true,
+	default: (): MockUrlQuery => ({
+		delete: mockUrlQueryDelete,
+		set: mockUrlQuerySet,
+		get: (): null => null,
+		toString: mockUrlQueryToString,
+	}),
+}));
+
+const mockGetNextZoomOutRange = jest.fn();
+jest.mock('lib/zoomOutUtils', () => ({
+	getNextZoomOutRange: (
+		...args: unknown[]
+	): ReturnType<typeof mockGetNextZoomOutRange> =>
+		mockGetNextZoomOutRange(...args),
+}));
+
+describe('useZoomOut', () => {
+	beforeEach(() => {
+		jest.clearAllMocks();
+		mockUrlQueryToString.mockReturnValue('relativeTime=45m');
+	});
+
+	it('should do nothing when isDisabled is true', () => {
+		const { result } = renderHook(() => useZoomOut({ isDisabled: true }));
+
+		act(() => {
+			result.current();
+		});
+
+		expect(mockGetNextZoomOutRange).not.toHaveBeenCalled();
+		expect(mockDispatch).not.toHaveBeenCalled();
+		expect(mockSafeNavigate).not.toHaveBeenCalled();
+	});
+
+	it('should do nothing when getNextZoomOutRange returns null', () => {
+		mockGetNextZoomOutRange.mockReturnValue(null);
+
+		const { result } = renderHook(() => useZoomOut());
+
+		act(() => {
+			result.current();
+		});
+
+		expect(mockGetNextZoomOutRange).toHaveBeenCalled();
+		expect(mockDispatch).not.toHaveBeenCalled();
+		expect(mockSafeNavigate).not.toHaveBeenCalled();
+	});
+
+	it('should dispatch preset and update URL when result has preset', () => {
+		mockGetNextZoomOutRange.mockReturnValue({
+			range: [1000, 2000],
+			preset: '45m',
+		});
+
+		const { result } = renderHook(() => useZoomOut());
+
+		act(() => {
+			result.current();
+		});
+
+		expect(mockDispatch).toHaveBeenCalledWith(expect.any(Function));
+		expect(mockUrlQueryDelete).toHaveBeenCalledWith(QueryParams.startTime);
+		expect(mockUrlQueryDelete).toHaveBeenCalledWith(QueryParams.endTime);
+		expect(mockUrlQuerySet).toHaveBeenCalledWith(QueryParams.relativeTime, '45m');
+		expect(mockSafeNavigate).toHaveBeenCalledWith(
+			expect.stringContaining('/logs-explorer'),
+		);
+	});
+
+	it('should dispatch custom range and update URL when result has no preset', () => {
+		mockGetNextZoomOutRange.mockReturnValue({
+			range: [1000000, 2000000],
+			preset: null,
+		});
+
+		const { result } = renderHook(() => useZoomOut());
+
+		act(() => {
+			result.current();
+		});
+
+		expect(mockDispatch).toHaveBeenCalledWith(expect.any(Function));
+		expect(mockUrlQuerySet).toHaveBeenCalledWith(
+			QueryParams.startTime,
+			'1000000',
+		);
+		expect(mockUrlQuerySet).toHaveBeenCalledWith(QueryParams.endTime, '2000000');
+		expect(mockUrlQueryDelete).toHaveBeenCalledWith(QueryParams.relativeTime);
+		expect(mockSafeNavigate).toHaveBeenCalledWith(
+			expect.stringContaining('/logs-explorer'),
+		);
+	});
+
+	it('should delete urlParamsToDelete when provided', () => {
+		mockGetNextZoomOutRange.mockReturnValue({
+			range: [1000, 2000],
+			preset: '45m',
+		});
+
+		const { result } = renderHook(() =>
+			useZoomOut({
+				urlParamsToDelete: [QueryParams.activeLogId],
+			}),
+		);
+
+		act(() => {
+			result.current();
+		});
+
+		expect(mockUrlQueryDelete).toHaveBeenCalledWith(QueryParams.activeLogId);
+	});
+});

frontend/src/hooks/useZoomOut.ts

@@ -0,0 +1,79 @@
+import { useCallback, useRef } from 'react';
+// eslint-disable-next-line no-restricted-imports
+import { useDispatch, useSelector } from 'react-redux';
+import { useLocation } from 'react-router-dom';
+import { QueryParams } from 'constants/query';
+import { useSafeNavigate } from 'hooks/useSafeNavigate';
+import useUrlQuery from 'hooks/useUrlQuery';
+import { getNextZoomOutRange } from 'lib/zoomOutUtils';
+import { UpdateTimeInterval } from 'store/actions';
+import { AppState } from 'store/reducers';
+import { GlobalReducer } from 'types/reducer/globalTime';
+import { persistTimeDurationForRoute } from 'utils/metricsTimeStorageUtils';
+
+export interface UseZoomOutOptions {
+	/** When true, the zoom out handler does nothing (e.g. when live logs are enabled) */
+	isDisabled?: boolean;
+	/** URL params to delete when zooming out (e.g. [QueryParams.activeLogId] for logs) */
+	urlParamsToDelete?: string[];
+}
+
+/**
+ * Reusable hook for zoom-out functionality in explorers (logs, traces, etc.).
+ * Computes the next time range using the zoom-out ladder, updates Redux global time,
+ * and navigates with the new URL params.
+ */
+const EMPTY_PARAMS: string[] = [];
+
+export function useZoomOut(options: UseZoomOutOptions = {}): () => void {
+	const { isDisabled = false, urlParamsToDelete = EMPTY_PARAMS } = options;
+	const urlParamsToDeleteRef = useRef(urlParamsToDelete);
+	urlParamsToDeleteRef.current = urlParamsToDelete;
+
+	const dispatch = useDispatch();
+	const { minTime, maxTime } = useSelector<AppState, GlobalReducer>(
+		(state) => state.globalTime,
+	);
+	const urlQuery = useUrlQuery();
+	const location = useLocation();
+	const { safeNavigate } = useSafeNavigate();
+
+	return useCallback((): void => {
+		if (isDisabled) {
+			return;
+		}
+		const minMs = Math.floor((minTime ?? 0) / 1e6);
+		const maxMs = Math.floor((maxTime ?? 0) / 1e6);
+		const result = getNextZoomOutRange(minMs, maxMs);
+		if (!result) {
+			return;
+		}
+		const [newStartMs, newEndMs] = result.range;
+		const { preset } = result;
+
+		if (preset) {
+			dispatch(UpdateTimeInterval(preset));
+			urlQuery.delete(QueryParams.startTime);
+			urlQuery.delete(QueryParams.endTime);
+			urlQuery.set(QueryParams.relativeTime, preset);
+			persistTimeDurationForRoute(location.pathname, preset);
+		} else {
+			dispatch(UpdateTimeInterval('custom', [newStartMs, newEndMs]));
+			urlQuery.set(QueryParams.startTime, String(newStartMs));
+			urlQuery.set(QueryParams.endTime, String(newEndMs));
+			urlQuery.delete(QueryParams.relativeTime);
+		}
+		for (const param of urlParamsToDeleteRef.current) {
+			urlQuery.delete(param);
+		}
+		safeNavigate(`${location.pathname}?${urlQuery.toString()}`);
+	}, [
+		dispatch,
+		isDisabled,
+		location.pathname,
+		maxTime,
+		minTime,
+		safeNavigate,
+		urlQuery,
+	]);
+}

frontend/src/lib/__tests__/zoomOutUtils.test.ts

@@ -0,0 +1,147 @@
+import {
+	getNextDurationInLadder,
+	getNextZoomOutRange,
+	isZoomOutDisabled,
+	ZoomOutResult,
+} from '../zoomOutUtils';
+
+const MS_PER_MIN = 60 * 1000;
+const MS_PER_HOUR = 60 * MS_PER_MIN;
+const MS_PER_DAY = 24 * MS_PER_HOUR;
+const MS_PER_WEEK = 7 * MS_PER_DAY;
+
+// Fixed "now" for deterministic tests: 2024-01-15 12:00:00 UTC
+const NOW_MS = 1705312800000;
+
+describe('zoomOutUtils', () => {
+	beforeEach(() => {
+		jest.spyOn(Date, 'now').mockReturnValue(NOW_MS);
+	});
+
+	afterEach(() => {
+		jest.restoreAllMocks();
+	});
+
+	describe('getNextDurationInLadder', () => {
+		it('should use 3x zoom out below 15m until reaching 15m', () => {
+			expect(getNextDurationInLadder(1 * MS_PER_MIN)).toBe(3 * MS_PER_MIN);
+			expect(getNextDurationInLadder(2 * MS_PER_MIN)).toBe(6 * MS_PER_MIN);
+			expect(getNextDurationInLadder(3 * MS_PER_MIN)).toBe(9 * MS_PER_MIN);
+			expect(getNextDurationInLadder(4 * MS_PER_MIN)).toBe(12 * MS_PER_MIN);
+			expect(getNextDurationInLadder(5 * MS_PER_MIN)).toBe(15 * MS_PER_MIN); // cap at 15m
+			expect(getNextDurationInLadder(6 * MS_PER_MIN)).toBe(15 * MS_PER_MIN); // 18m capped
+		});
+
+		it('should return next step for each ladder rung from 15m onward', () => {
+			expect(getNextDurationInLadder(10 * MS_PER_MIN)).toBe(15 * MS_PER_MIN);
+			expect(getNextDurationInLadder(15 * MS_PER_MIN)).toBe(45 * MS_PER_MIN);
+			expect(getNextDurationInLadder(45 * MS_PER_MIN)).toBe(2 * MS_PER_HOUR);
+			expect(getNextDurationInLadder(2 * MS_PER_HOUR)).toBe(7 * MS_PER_HOUR);
+			expect(getNextDurationInLadder(7 * MS_PER_HOUR)).toBe(21 * MS_PER_HOUR);
+			expect(getNextDurationInLadder(21 * MS_PER_HOUR)).toBe(1 * MS_PER_DAY);
+			expect(getNextDurationInLadder(1 * MS_PER_DAY)).toBe(2 * MS_PER_DAY);
+			expect(getNextDurationInLadder(2 * MS_PER_DAY)).toBe(3 * MS_PER_DAY);
+			expect(getNextDurationInLadder(3 * MS_PER_DAY)).toBe(1 * MS_PER_WEEK);
+			expect(getNextDurationInLadder(1 * MS_PER_WEEK)).toBe(2 * MS_PER_WEEK);
+			expect(getNextDurationInLadder(2 * MS_PER_WEEK)).toBe(30 * MS_PER_DAY);
+		});
+
+		it('should return MAX when at or past 1 month (no wrap)', () => {
+			expect(getNextDurationInLadder(30 * MS_PER_DAY)).toBe(30 * MS_PER_DAY);
+			expect(getNextDurationInLadder(31 * MS_PER_DAY)).toBe(30 * MS_PER_DAY);
+		});
+
+		it('should return next step for duration between ladder rungs', () => {
+			expect(getNextDurationInLadder(1 * MS_PER_HOUR)).toBe(2 * MS_PER_HOUR);
+			expect(getNextDurationInLadder(5 * MS_PER_HOUR)).toBe(7 * MS_PER_HOUR);
+			expect(getNextDurationInLadder(12 * MS_PER_HOUR)).toBe(21 * MS_PER_HOUR);
+		});
+	});
+
+	describe('getNextZoomOutRange', () => {
+		it('should return null when duration is zero or negative', () => {
+			expect(getNextZoomOutRange(NOW_MS, NOW_MS)).toBeNull();
+			expect(getNextZoomOutRange(NOW_MS, NOW_MS - 1000)).toBeNull();
+		});
+
+		it('should return center-anchored range and preset=null when new end does not exceed now (Phase 1)', () => {
+			// 15m range centered well before now so zoom to 45m keeps end <= now
+			// Center at now-30m: end = center + 22.5m = now - 7.5m <= now
+			const centerMs = NOW_MS - 30 * MS_PER_MIN;
+			const start15m = centerMs - 7.5 * MS_PER_MIN;
+			const end15m = centerMs + 7.5 * MS_PER_MIN;
+			const result = getNextZoomOutRange(start15m, end15m) as ZoomOutResult;
+
+			expect(result).not.toBeNull();
+			expect(result.preset).toBeNull(); // Phase 1: preserve center-anchored range, avoid GetMinMax "last X from now"
+			const [newStart, newEnd] = result.range;
+			expect(newEnd - newStart).toBe(45 * MS_PER_MIN);
+			const newCenter = (newStart + newEnd) / 2;
+			expect(Math.abs(newCenter - centerMs)).toBeLessThan(2000);
+			expect(newEnd).toBeLessThanOrEqual(NOW_MS + 1000);
+		});
+
+		it('should return end-anchored range when new end would exceed now (Phase 2)', () => {
+			// 22hr range ending at now - zoom to 1d (24hr) would push end past now
+			// Next ladder step from 22hr is 1d
+			const start22h = NOW_MS - 22 * MS_PER_HOUR;
+			const end22h = NOW_MS;
+			const result = getNextZoomOutRange(start22h, end22h) as ZoomOutResult;
+
+			expect(result).not.toBeNull();
+			expect(result.preset).toBe('1d');
+			const [newStart, newEnd] = result.range;
+			expect(newEnd).toBe(NOW_MS); // End anchored at now
+			expect(newStart).toBe(NOW_MS - 1 * MS_PER_DAY);
+		});
+
+		it('should return correct preset for each ladder step', () => {
+			const presets: [number, number, string][] = [
+				[15 * MS_PER_MIN, 0, '45m'],
+				[45 * MS_PER_MIN, 0, '2h'],
+				[2 * MS_PER_HOUR, 0, '7h'],
+				[7 * MS_PER_HOUR, 0, '21h'],
+				[21 * MS_PER_HOUR, 0, '1d'],
+				[1 * MS_PER_DAY, 0, '2d'],
+				[2 * MS_PER_DAY, 0, '3d'],
+				[3 * MS_PER_DAY, 0, '1w'],
+				[1 * MS_PER_WEEK, 0, '2w'],
+				[2 * MS_PER_WEEK, 0, '1month'],
+			];
+
+			presets.forEach(([durationMs, offset, expectedPreset]) => {
+				const end = NOW_MS - offset;
+				const start = end - durationMs;
+				const result = getNextZoomOutRange(start, end);
+				expect(result?.preset).toBe(expectedPreset);
+			});
+		});
+
+		it('isZoomOutDisabled returns true when duration >= 1 month', () => {
+			expect(isZoomOutDisabled(30 * MS_PER_DAY)).toBe(true);
+			expect(isZoomOutDisabled(31 * MS_PER_DAY)).toBe(true);
+			expect(isZoomOutDisabled(29 * MS_PER_DAY)).toBe(false);
+			expect(isZoomOutDisabled(15 * MS_PER_MIN)).toBe(false);
+		});
+
+		it('should return null when at 1 month (no zoom out beyond max)', () => {
+			const start1m = NOW_MS - 30 * MS_PER_DAY;
+			const end1m = NOW_MS;
+			const result = getNextZoomOutRange(start1m, end1m);
+
+			expect(result).toBeNull();
+		});
+
+		it('should zoom out 3x from 5m range to 15m then continue with ladder', () => {
+			// 5m range ending at now → 3x = 15m
+			const start5m = NOW_MS - 5 * MS_PER_MIN;
+			const end5m = NOW_MS;
+			const result = getNextZoomOutRange(start5m, end5m) as ZoomOutResult;
+
+			expect(result).not.toBeNull();
+			expect(result.preset).toBe('15m');
+			const [newStart, newEnd] = result.range;
+			expect(newEnd - newStart).toBe(15 * MS_PER_MIN);
+		});
+	});
+});

frontend/src/lib/zoomOutUtils.ts

@@ -0,0 +1,139 @@
+/**
+ * Custom Time Picker zoom-out ladder:
+ * - Until 1 day: 15m → 45m → 2hr → 7hr → 21hr
+ * - Then fixed: 1d → 2d → 3d → 1w → 2w → 1m
+ * - At 1 month: zoom out is disabled (max range)
+ */
+
+import type {
+	CustomTimeType,
+	Time,
+} from 'container/TopNav/DateTimeSelectionV2/types';
+
+const MS_PER_MIN = 60 * 1000;
+const MS_PER_HOUR = 60 * MS_PER_MIN;
+const MS_PER_DAY = 24 * MS_PER_HOUR;
+const MS_PER_WEEK = 7 * MS_PER_DAY;
+
+const ZOOM_OUT_LADDER_MS: number[] = [
+	15 * MS_PER_MIN, // 15m
+	45 * MS_PER_MIN, // 45m
+	2 * MS_PER_HOUR, // 2hr
+	7 * MS_PER_HOUR, // 7hr
+	21 * MS_PER_HOUR, // 21hr
+	1 * MS_PER_DAY, // 1d
+	2 * MS_PER_DAY, // 2d
+	3 * MS_PER_DAY, // 3d
+	1 * MS_PER_WEEK, // 1w
+	2 * MS_PER_WEEK, // 2w
+	30 * MS_PER_DAY, // 1m
+];
+
+const LADDER_LAST_INDEX = ZOOM_OUT_LADDER_MS.length - 1;
+const MAX_DURATION = ZOOM_OUT_LADDER_MS[LADDER_LAST_INDEX];
+const MIN_LADDER_DURATION_MS = ZOOM_OUT_LADDER_MS[0]; // 15m - below this we use 3x
+
+export const MAX_ZOOM_OUT_DURATION_MS = MAX_DURATION;
+
+/** Returns true when zoom out should be disabled (range at or beyond 1 month) */
+export function isZoomOutDisabled(durationMs: number): boolean {
+	return durationMs >= MAX_ZOOM_OUT_DURATION_MS;
+}
+
+/** Preset labels for ladder steps supported by GetMinMax (shows "Last 15 minutes" etc. instead of "Custom") */
+const PRESET_FOR_DURATION_MS: Record<number, Time | CustomTimeType> = {
+	[15 * MS_PER_MIN]: '15m',
+	[45 * MS_PER_MIN]: '45m',
+	[2 * MS_PER_HOUR]: '2h',
+	[7 * MS_PER_HOUR]: '7h',
+	[21 * MS_PER_HOUR]: '21h',
+	[1 * MS_PER_DAY]: '1d',
+	[2 * MS_PER_DAY]: '2d',
+	[3 * MS_PER_DAY]: '3d',
+	[1 * MS_PER_WEEK]: '1w',
+	[2 * MS_PER_WEEK]: '2w',
+	[30 * MS_PER_DAY]: '1month',
+};
+
+/**
+ * Returns the next duration in the zoom-out ladder for the given current duration.
+ * Below 15m: zoom out 3x until we reach 15m, then continue with the ladder.
+ * If at or past 1 month, returns MAX_DURATION (no zoom out - button is disabled).
+ */
+export function getNextDurationInLadder(durationMs: number): number {
+	if (durationMs >= MAX_DURATION) {
+		return MAX_DURATION; // No zoom out beyond 1 month
+	}
+
+	// Below 15m: zoom out 3x until we reach 15m
+	if (durationMs < MIN_LADDER_DURATION_MS) {
+		const next = durationMs * 3;
+		return Math.min(next, MIN_LADDER_DURATION_MS);
+	}
+
+	// At or above 15m: use the fixed ladder
+	for (let i = 0; i < ZOOM_OUT_LADDER_MS.length; i++) {
+		if (ZOOM_OUT_LADDER_MS[i] > durationMs) {
+			return ZOOM_OUT_LADDER_MS[i];
+		}
+	}
+
+	return MAX_DURATION;
+}
+
+export interface ZoomOutResult {
+	range: [number, number];
+	/** Preset key (e.g. '15m') when range matches a preset - use for display instead of "Custom Date Range" */
+	preset: Time | CustomTimeType | null;
+}
+
+/**
+ * Computes the next zoomed-out time range.
+ * Phase 1 (center-anchored): While new end <= now, expand from center.
+ * Phase 2 (end-anchored at now): When new end would exceed now, anchor end at now and move start backward.
+ *
+ * @returns ZoomOutResult with range and preset (or null if no change)
+ */
+export function getNextZoomOutRange(
+	startMs: number,
+	endMs: number,
+): ZoomOutResult | null {
+	const nowMs = Date.now();
+	const durationMs = endMs - startMs;
+
+	if (durationMs <= 0) {
+		return null;
+	}
+
+	const newDurationMs = getNextDurationInLadder(durationMs);
+
+	// No zoom out when already at max (1 month)
+	if (newDurationMs <= durationMs) {
+		return null;
+	}
+	const centerMs = startMs + durationMs / 2;
+	const computedEndMs = centerMs + newDurationMs / 2;
+
+	let newStartMs: number;
+	let newEndMs: number;
+
+	const isPhase1 = computedEndMs <= nowMs;
+	if (isPhase1) {
+		// Phase 1: center-anchored (historical range not ending at now)
+		newStartMs = centerMs - newDurationMs / 2;
+		newEndMs = computedEndMs;
+	} else {
+		// Phase 2: end-anchored at now
+		newStartMs = nowMs - newDurationMs;
+		newEndMs = nowMs;
+	}
+
+	// Phase 2 only: use preset so GetMinMax produces "last X from now".
+	// Phase 1: preset=null so the center-anchored range is preserved (GetMinMax would discard it).
+	const preset = isPhase1 ? null : PRESET_FOR_DURATION_MS[newDurationMs] ?? null;
+
+	return {
+		range: [Math.round(newStartMs), Math.round(newEndMs)],
+		preset,
+	};
+}

frontend/src/pages/TraceDetailV2/index.tsx

@@ -4,11 +4,19 @@ import ROUTES from 'constants/routes';
 import history from 'lib/history';
 import { Compass, Cone, TowerControl } from 'lucide-react';
 
-import TraceDetailsV3 from '../TraceDetailsV3';
+import TraceDetailsV2 from './TraceDetailV2';
 
 import './TraceDetailV2.styles.scss';
 
-function NewTraceDetail(props: any): JSX.Element {
+interface INewTraceDetailProps {
+	items: {
+		label: JSX.Element;
+		key: string;
+		children: JSX.Element;
+	}[];
+}
+
+function NewTraceDetail(props: INewTraceDetailProps): JSX.Element {
 	const { items } = props;
 	return (
 		<div className="traces-module-container">
@@ -42,7 +50,7 @@ export default function TraceDetailsPage(): JSX.Element {
 				</div>
 			),
 			key: 'trace-details',
-			children: <TraceDetailsV3 />,
+			children: <TraceDetailsV2 />,
 		},
 		{
 			label: (

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.styles.scss

@@ -1,91 +0,0 @@
-.trace-details-header {
-	display: flex;
-	align-items: center;
-	padding: 0px 16px;
-
-	.previous-btn {
-		display: flex;
-		height: 30px;
-		padding: 6px 8px;
-		align-items: center;
-		gap: 4px;
-		border: 1px solid var(--bg-slate-300);
-		background: var(--bg-slate-500);
-		border-radius: 4px;
-		box-shadow: none;
-	}
-
-	.trace-name {
-		display: flex;
-		padding: 6px 8px;
-		margin-left: 6px;
-		align-items: center;
-		gap: 4px;
-		border: 1px solid var(--bg-slate-300);
-		border-radius: 4px 0px 0px 4px;
-		background: var(--bg-slate-500);
-
-		.drafting {
-			color: white;
-		}
-
-		.trace-id {
-			color: #fff;
-			font-family: Inter;
-			font-size: 13px;
-			font-style: normal;
-			font-weight: 400;
-			line-height: 18px;
-			letter-spacing: -0.07px;
-		}
-	}
-
-	.trace-id-value {
-		display: flex;
-		padding: 6px 8px;
-		justify-content: center;
-		align-items: center;
-		gap: 10px;
-		background: var(--bg-slate-400);
-		color: var(--Vanilla-400, #c0c1c3);
-		font-family: Inter;
-		font-size: 13px;
-		font-style: normal;
-		font-weight: 400;
-		line-height: 18px;
-		letter-spacing: -0.07px;
-		border: 1px solid var(--bg-slate-300);
-		border-left: unset;
-		border-radius: 0px 4px 4px 0px;
-	}
-}
-
-.lightMode {
-	.trace-details-header {
-		.previous-btn {
-			border: 1px solid var(--bg-vanilla-300);
-			background: var(--bg-vanilla-200);
-		}
-
-		.trace-name {
-			border: 1px solid var(--bg-vanilla-300);
-			background: var(--bg-vanilla-200);
-			border-right: none;
-
-			.drafting {
-				color: var(--bg-ink-100);
-			}
-
-			.trace-id {
-				color: var(--bg-ink-100);
-			}
-		}
-
-		.trace-id-value {
-			background: var(--bg-vanilla-300);
-			color: var(--bg-ink-400);
-			border: 1px solid var(--bg-vanilla-300);
-		}
-	}
-}
-// TODO: move to new css module name system

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.tsx

@@ -1,38 +0,0 @@
-import { useCallback } from 'react';
-import { useParams } from 'react-router-dom';
-import { Button, Typography } from 'antd';
-import ROUTES from 'constants/routes';
-import history from 'lib/history';
-import { ArrowLeft } from 'lucide-react';
-import { TraceDetailV2URLProps } from 'types/api/trace/getTraceV2';
-
-import './TraceDetailsHeader.styles.scss';
-
-function TraceDetailsHeader(): JSX.Element {
-	const { id: traceID } = useParams<TraceDetailV2URLProps>();
-
-	const handlePreviousBtnClick = useCallback((): void => {
-		const isSpaNavigate =
-			document.referrer &&
-			new URL(document.referrer).origin === window.location.origin;
-		if (isSpaNavigate) {
-			history.goBack();
-		} else {
-			history.push(ROUTES.TRACES_EXPLORER);
-		}
-	}, []);
-
-	return (
-		<div className="trace-details-header">
-			<Button className="previous-btn" onClick={handlePreviousBtnClick}>
-				<ArrowLeft size={14} />
-			</Button>
-			<div className="trace-name">
-				<Typography.Text className="trace-id">Trace ID</Typography.Text>
-			</div>
-			<Typography.Text className="trace-id-value">{traceID}</Typography.Text>
-		</div>
-	);
-}
-
-export default TraceDetailsHeader;

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/FlamegraphCanvas.tsx

@@ -1,237 +0,0 @@
-import React, { useCallback, useEffect, useRef, useState } from 'react';
-import { createPortal } from 'react-dom';
-import TimelineV3 from 'components/TimelineV3/TimelineV3';
-import { useIsDarkMode } from 'hooks/useDarkMode';
-
-import { DEFAULT_ROW_HEIGHT } from './constants';
-import { useCanvasSetup } from './hooks/useCanvasSetup';
-import { useFlamegraphDrag } from './hooks/useFlamegraphDrag';
-import { useFlamegraphDraw } from './hooks/useFlamegraphDraw';
-import { useFlamegraphHover } from './hooks/useFlamegraphHover';
-import { useFlamegraphZoom } from './hooks/useFlamegraphZoom';
-import { useScrollToSpan } from './hooks/useScrollToSpan';
-import { FlamegraphCanvasProps, SpanRect } from './types';
-import { formatDuration } from './utils';
-
-function FlamegraphCanvas(props: FlamegraphCanvasProps): JSX.Element {
-	const { spans, traceMetadata, firstSpanAtFetchLevel, onSpanClick } = props;
-
-	const isDarkMode = useIsDarkMode(); //TODO: see if can be removed or use a new hook
-	const canvasRef = useRef<HTMLCanvasElement>(null);
-	const containerRef = useRef<HTMLDivElement>(null);
-	const spanRectsRef = useRef<SpanRect[]>([]);
-
-	const [viewStartTs, setViewStartTs] = useState<number>(
-		traceMetadata.startTime,
-	);
-	const [viewEndTs, setViewEndTs] = useState<number>(traceMetadata.endTime);
-	const [scrollTop, setScrollTop] = useState<number>(0);
-	const [rowHeight, setRowHeight] = useState<number>(DEFAULT_ROW_HEIGHT);
-
-	// Mutable refs for zoom and drag hooks to read during rAF / mouse callbacks
-	const viewStartRef = useRef(viewStartTs);
-	const viewEndRef = useRef(viewEndTs);
-	const rowHeightRef = useRef(rowHeight);
-	const scrollTopRef = useRef(scrollTop);
-
-	useEffect(() => {
-		viewStartRef.current = viewStartTs;
-	}, [viewStartTs]);
-
-	useEffect(() => {
-		viewEndRef.current = viewEndTs;
-	}, [viewEndTs]);
-
-	useEffect(() => {
-		rowHeightRef.current = rowHeight;
-	}, [rowHeight]);
-
-	useEffect(() => {
-		scrollTopRef.current = scrollTop;
-	}, [scrollTop]);
-
-	useEffect(() => {
-		//TODO: see if this can be removed as once loaded the view start and end ts will not change
-		setViewStartTs(traceMetadata.startTime);
-		setViewEndTs(traceMetadata.endTime);
-		viewStartRef.current = traceMetadata.startTime;
-		viewEndRef.current = traceMetadata.endTime;
-	}, [traceMetadata.startTime, traceMetadata.endTime]);
-
-	const totalHeight = spans.length * rowHeight;
-
-	const { isOverFlamegraphRef } = useFlamegraphZoom({
-		canvasRef,
-		traceMetadata,
-		viewStartRef,
-		viewEndRef,
-		rowHeightRef,
-		setViewStartTs,
-		setViewEndTs,
-		setRowHeight,
-	});
-
-	const {
-		handleMouseDown,
-		handleMouseMove: handleDragMouseMove,
-		handleMouseUp,
-		handleDragMouseLeave,
-		suppressClickRef,
-		isDraggingRef,
-	} = useFlamegraphDrag({
-		canvasRef,
-		containerRef,
-		traceMetadata,
-		viewStartRef,
-		viewEndRef,
-		setViewStartTs,
-		setViewEndTs,
-		scrollTopRef,
-		setScrollTop,
-		totalHeight,
-	});
-
-	const {
-		hoveredSpanId,
-		handleHoverMouseMove,
-		handleHoverMouseLeave,
-		handleClick,
-		tooltipContent,
-	} = useFlamegraphHover({
-		canvasRef,
-		spanRectsRef,
-		traceMetadata,
-		viewStartTs,
-		viewEndTs,
-		isDraggingRef,
-		suppressClickRef,
-		onSpanClick,
-		isDarkMode,
-	});
-
-	const { drawFlamegraph } = useFlamegraphDraw({
-		canvasRef,
-		containerRef,
-		spans,
-		viewStartTs,
-		viewEndTs,
-		scrollTop,
-		rowHeight,
-		selectedSpanId: firstSpanAtFetchLevel || undefined,
-		hoveredSpanId: hoveredSpanId ?? '',
-		isDarkMode,
-		spanRectsRef,
-	});
-
-	useScrollToSpan({
-		firstSpanAtFetchLevel,
-		spans,
-		traceMetadata,
-		containerRef,
-		viewStartRef,
-		viewEndRef,
-		scrollTopRef,
-		rowHeight,
-		setViewStartTs,
-		setViewEndTs,
-		setScrollTop,
-	});
-
-	useCanvasSetup(canvasRef, containerRef, drawFlamegraph);
-
-	const handleMouseMove = useCallback(
-		(e: React.MouseEvent): void => {
-			handleDragMouseMove(e);
-			handleHoverMouseMove(e);
-		},
-		[handleDragMouseMove, handleHoverMouseMove],
-	);
-
-	const handleMouseLeave = useCallback((): void => {
-		isOverFlamegraphRef.current = false;
-		handleDragMouseLeave();
-		handleHoverMouseLeave();
-	}, [isOverFlamegraphRef, handleDragMouseLeave, handleHoverMouseLeave]);
-
-	// todo: move to a separate component/utils file
-	const tooltipElement = tooltipContent
-		? createPortal(
-				<div
-					style={{
-						position: 'fixed',
-						left: Math.min(tooltipContent.clientX + 15, window.innerWidth - 220),
-						top: Math.min(tooltipContent.clientY + 15, window.innerHeight - 100),
-						zIndex: 1000,
-						backgroundColor: 'rgba(30, 30, 30, 0.95)',
-						color: '#fff',
-						padding: '8px 12px',
-						borderRadius: 4,
-						fontSize: 12,
-						fontFamily: 'Inter, sans-serif',
-						boxShadow: '0 2px 8px rgba(0,0,0,0.3)',
-						pointerEvents: 'none',
-					}}
-				>
-					<div
-						style={{
-							fontWeight: 600,
-							marginBottom: 4,
-							color: tooltipContent.spanColor,
-						}}
-					>
-						{tooltipContent.spanName}
-					</div>
-					<div>Status: {tooltipContent.status}</div>
-					<div>Start: {tooltipContent.startMs.toFixed(2)} ms</div>
-					<div>Duration: {formatDuration(tooltipContent.durationMs * 1e6)}</div>
-				</div>,
-				document.body,
-		  )
-		: null;
-
-	return (
-		<div
-			style={{
-				display: 'flex',
-				flexDirection: 'column',
-				height: '100%',
-				padding: '0 15px',
-			}}
-		>
-			{tooltipElement}
-			<TimelineV3
-				startTimestamp={viewStartTs}
-				endTimestamp={viewEndTs}
-				offsetTimestamp={viewStartTs - traceMetadata.startTime}
-				timelineHeight={10}
-			/>
-			<div
-				ref={containerRef}
-				style={{
-					flex: 1,
-					overflow: 'hidden',
-					position: 'relative',
-				}}
-				onMouseEnter={(): void => {
-					isOverFlamegraphRef.current = true;
-				}}
-				onMouseLeave={handleMouseLeave}
-			>
-				<canvas
-					ref={canvasRef}
-					style={{
-						display: 'block',
-						width: '100%',
-						cursor: 'grab',
-					}}
-					onMouseDown={handleMouseDown}
-					onMouseMove={handleMouseMove}
-					onMouseUp={handleMouseUp}
-					onClick={handleClick}
-				/>
-			</div>
-		</div>
-	);
-}
-
-export default FlamegraphCanvas;

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/TraceFlamegraph.tsx

@@ -1,107 +0,0 @@
-import { useCallback, useEffect, useMemo, useState } from 'react';
-import { useHistory, useLocation, useParams } from 'react-router-dom';
-import useGetTraceFlamegraph from 'hooks/trace/useGetTraceFlamegraph';
-import useUrlQuery from 'hooks/useUrlQuery';
-import { TraceDetailFlamegraphURLProps } from 'types/api/trace/getTraceFlamegraph';
-
-import FlamegraphCanvas from './FlamegraphCanvas';
-
-//TODO: analyse if this is needed or not and move to separate file if needed else delete this enum.
-enum TraceFlamegraphState {
-	LOADING = 'LOADING',
-	SUCCESS = 'SUCCESS',
-	NO_DATA = 'NO_DATA',
-	ERROR = 'ERROR',
-	FETCHING_WITH_OLD_DATA = 'FETCHING_WITH_OLD_DATA',
-}
-
-function TraceFlamegraph(): JSX.Element {
-	const { id: traceId } = useParams<TraceDetailFlamegraphURLProps>();
-	const urlQuery = useUrlQuery();
-	const history = useHistory();
-	const { search } = useLocation();
-	const [firstSpanAtFetchLevel, setFirstSpanAtFetchLevel] = useState<string>(
-		urlQuery.get('spanId') || '',
-	);
-
-	useEffect(() => {
-		setFirstSpanAtFetchLevel(urlQuery.get('spanId') || '');
-	}, [urlQuery]);
-
-	const handleSpanClick = useCallback(
-		(spanId: string): void => {
-			setFirstSpanAtFetchLevel(spanId);
-			const searchParams = new URLSearchParams(search);
-			//tood: use from query params constants
-			if (searchParams.get('spanId') !== spanId) {
-				searchParams.set('spanId', spanId);
-				history.replace({ search: searchParams.toString() });
-			}
-		},
-		[history, search],
-	);
-
-	const { data, isFetching, error } = useGetTraceFlamegraph({
-		traceId,
-		selectedSpanId: firstSpanAtFetchLevel,
-	});
-
-	const flamegraphState = useMemo(() => {
-		if (isFetching) {
-			if (data?.payload?.spans && data.payload.spans.length > 0) {
-				return TraceFlamegraphState.FETCHING_WITH_OLD_DATA;
-			}
-			return TraceFlamegraphState.LOADING;
-		}
-		if (error) {
-			return TraceFlamegraphState.ERROR;
-		}
-		if (data?.payload?.spans && data.payload.spans.length === 0) {
-			return TraceFlamegraphState.NO_DATA;
-		}
-		return TraceFlamegraphState.SUCCESS;
-	}, [error, isFetching, data]);
-
-	const spans = useMemo(() => data?.payload?.spans || [], [
-		data?.payload?.spans,
-	]);
-
-	const content = useMemo(() => {
-		switch (flamegraphState) {
-			case TraceFlamegraphState.LOADING:
-				return <div>Loading...</div>;
-			case TraceFlamegraphState.ERROR:
-				return <div>Error loading flamegraph</div>;
-			case TraceFlamegraphState.NO_DATA:
-				return <div>No data found for trace {traceId}</div>;
-			case TraceFlamegraphState.SUCCESS:
-			case TraceFlamegraphState.FETCHING_WITH_OLD_DATA:
-				return (
-					<FlamegraphCanvas
-						spans={spans}
-						firstSpanAtFetchLevel={firstSpanAtFetchLevel}
-						setFirstSpanAtFetchLevel={setFirstSpanAtFetchLevel}
-						onSpanClick={handleSpanClick}
-						traceMetadata={{
-							startTime: data?.payload?.startTimestampMillis || 0,
-							endTime: data?.payload?.endTimestampMillis || 0,
-						}}
-					/>
-				);
-			default:
-				return <div>Fetching the trace...</div>;
-		}
-	}, [
-		data?.payload?.endTimestampMillis,
-		data?.payload?.startTimestampMillis,
-		firstSpanAtFetchLevel,
-		flamegraphState,
-		spans,
-		traceId,
-		handleSpanClick,
-	]);
-
-	return <>{content}</>;
-}
-
-export default TraceFlamegraph;

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/drawUtils.test.ts

@@ -1,525 +0,0 @@
-import { DASHED_BORDER_LINE_DASH, MIN_WIDTH_FOR_NAME } from '../constants';
-import type { FlamegraphRowMetrics } from '../utils';
-import { getFlamegraphRowMetrics } from '../utils';
-import { drawEventDot, drawSpanBar } from '../utils';
-import { MOCK_SPAN } from './testUtils';
-
-jest.mock('container/TraceDetail/utils', () => ({
-	convertTimeToRelevantUnit: (): { time: number; timeUnitName: string } => ({
-		time: 50,
-		timeUnitName: 'ms',
-	}),
-}));
-
-/** Minimal 2D context for createStripePattern's internal canvas (jsdom getContext often returns null) */
-const mockPatternCanvasCtx = {
-	beginPath: jest.fn(),
-	moveTo: jest.fn(),
-	lineTo: jest.fn(),
-	stroke: jest.fn(),
-	globalAlpha: 1,
-};
-
-const originalCreateElement = document.createElement.bind(document);
-document.createElement = function (
-	tagName: string,
-): ReturnType<typeof originalCreateElement> {
-	const el = originalCreateElement(tagName);
-	if (tagName.toLowerCase() === 'canvas') {
-		(el as HTMLCanvasElement).getContext = (() =>
-			mockPatternCanvasCtx as unknown) as HTMLCanvasElement['getContext'];
-	}
-	return el;
-};
-
-function createMockCtx(): jest.Mocked<CanvasRenderingContext2D> {
-	return ({
-		beginPath: jest.fn(),
-		roundRect: jest.fn(),
-		fill: jest.fn(),
-		stroke: jest.fn(),
-		save: jest.fn(),
-		restore: jest.fn(),
-		translate: jest.fn(),
-		rotate: jest.fn(),
-		fillRect: jest.fn(),
-		strokeRect: jest.fn(),
-		setLineDash: jest.fn(),
-		measureText: jest.fn(
-			(text: string) => ({ width: text.length * 6 } as TextMetrics),
-		),
-		createPattern: jest.fn(() => ({} as CanvasPattern)),
-		clip: jest.fn(),
-		rect: jest.fn(),
-		fillText: jest.fn(),
-		font: '',
-		fillStyle: '',
-		strokeStyle: '',
-		textAlign: '',
-		textBaseline: '',
-		lineWidth: 0,
-		globalAlpha: 1,
-	} as unknown) as jest.Mocked<CanvasRenderingContext2D>;
-}
-
-const METRICS: FlamegraphRowMetrics = getFlamegraphRowMetrics(24);
-
-describe('Canvas Draw Utils', () => {
-	describe('drawSpanBar', () => {
-		it('draws rect + fill for normal span (no selected/hovered)', () => {
-			const ctx = createMockCtx();
-			const spanRectsArray: {
-				span: typeof MOCK_SPAN;
-				x: number;
-				y: number;
-				width: number;
-				height: number;
-				level: number;
-			}[] = [];
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, event: [] },
-				x: 10,
-				y: 0,
-				width: 100,
-				levelIndex: 0,
-				spanRectsArray,
-				color: '#1890ff',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			expect(ctx.beginPath).toHaveBeenCalled();
-			expect(ctx.roundRect).toHaveBeenCalledWith(10, 1, 100, 22, 2);
-			expect(ctx.fill).toHaveBeenCalled();
-			expect(ctx.stroke).not.toHaveBeenCalled();
-			expect(spanRectsArray).toHaveLength(1);
-			expect(spanRectsArray[0]).toMatchObject({
-				x: 10,
-				y: 1,
-				width: 100,
-				height: 22,
-				level: 0,
-			});
-		});
-
-		it('uses stripe pattern + dashed stroke + 2px when selected', () => {
-			const ctx = createMockCtx();
-			const spanRectsArray: {
-				span: typeof MOCK_SPAN;
-				x: number;
-				y: number;
-				width: number;
-				height: number;
-				level: number;
-			}[] = [];
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, spanId: 'sel', event: [] },
-				x: 20,
-				y: 0,
-				width: 80,
-				levelIndex: 1,
-				spanRectsArray,
-				color: '#2F80ED',
-				isDarkMode: false,
-				metrics: METRICS,
-				selectedSpanId: 'sel',
-			});
-
-			expect(ctx.createPattern).toHaveBeenCalled();
-			expect(ctx.setLineDash).toHaveBeenCalledWith(DASHED_BORDER_LINE_DASH);
-			expect(ctx.strokeStyle).toBe('#2F80ED');
-			expect(ctx.lineWidth).toBe(2);
-			expect(ctx.stroke).toHaveBeenCalled();
-			expect(ctx.setLineDash).toHaveBeenLastCalledWith([]);
-		});
-
-		it('uses stripe pattern + solid stroke + 1px when hovered (not selected)', () => {
-			const ctx = createMockCtx();
-			const spanRectsArray: {
-				span: typeof MOCK_SPAN;
-				x: number;
-				y: number;
-				width: number;
-				height: number;
-				level: number;
-			}[] = [];
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, spanId: 'hov', event: [] },
-				x: 30,
-				y: 0,
-				width: 60,
-				levelIndex: 0,
-				spanRectsArray,
-				color: '#2F80ED',
-				isDarkMode: false,
-				metrics: METRICS,
-				hoveredSpanId: 'hov',
-			});
-
-			expect(ctx.createPattern).toHaveBeenCalled();
-			expect(ctx.setLineDash).not.toHaveBeenCalled();
-			expect(ctx.lineWidth).toBe(1);
-			expect(ctx.stroke).toHaveBeenCalled();
-		});
-
-		it('pushes spanRectsArray with correct dimensions', () => {
-			const ctx = createMockCtx();
-			const spanRectsArray: {
-				span: typeof MOCK_SPAN;
-				x: number;
-				y: number;
-				width: number;
-				height: number;
-				level: number;
-			}[] = [];
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, spanId: 'rect-test', event: [] },
-				x: 5,
-				y: 24,
-				width: 200,
-				levelIndex: 2,
-				spanRectsArray,
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			expect(spanRectsArray[0]).toMatchObject({
-				x: 5,
-				y: 25,
-				width: 200,
-				height: 22,
-				level: 2,
-			});
-			expect(spanRectsArray[0].span.spanId).toBe('rect-test');
-		});
-	});
-
-	describe('drawSpanLabel (via drawSpanBar)', () => {
-		it('skips label when width < MIN_WIDTH_FOR_NAME', () => {
-			const ctx = createMockCtx();
-			const spanRectsArray: {
-				span: typeof MOCK_SPAN;
-				x: number;
-				y: number;
-				width: number;
-				height: number;
-				level: number;
-			}[] = [];
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, name: 'long-span-name', event: [] },
-				x: 0,
-				y: 0,
-				width: MIN_WIDTH_FOR_NAME - 1,
-				levelIndex: 0,
-				spanRectsArray,
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			expect(ctx.clip).not.toHaveBeenCalled();
-			expect(ctx.fillText).not.toHaveBeenCalled();
-		});
-
-		it('draws name only when width >= MIN_WIDTH_FOR_NAME but < MIN_WIDTH_FOR_NAME_AND_DURATION', () => {
-			const ctx = createMockCtx();
-			ctx.measureText = jest.fn(
-				(t: string) => ({ width: t.length * 6 } as TextMetrics),
-			);
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, name: 'foo', event: [] },
-				x: 0,
-				y: 0,
-				width: 50,
-				levelIndex: 0,
-				spanRectsArray: [],
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			expect(ctx.clip).toHaveBeenCalled();
-			expect(ctx.fillText).toHaveBeenCalled();
-			expect(ctx.textAlign).toBe('left');
-		});
-
-		it('draws name + duration when width >= MIN_WIDTH_FOR_NAME_AND_DURATION', () => {
-			const ctx = createMockCtx();
-			ctx.measureText = jest.fn(
-				(t: string) => ({ width: t.length * 6 } as TextMetrics),
-			);
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, name: 'my-span', event: [] },
-				x: 0,
-				y: 0,
-				width: 100,
-				levelIndex: 0,
-				spanRectsArray: [],
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			expect(ctx.fillText).toHaveBeenCalledTimes(2);
-			expect(ctx.fillText).toHaveBeenCalledWith(
-				'50ms',
-				expect.any(Number),
-				expect.any(Number),
-			);
-			expect(ctx.fillText).toHaveBeenCalledWith(
-				'my-span',
-				expect.any(Number),
-				expect.any(Number),
-			);
-		});
-	});
-
-	describe('truncateText (via drawSpanBar)', () => {
-		it('uses full text when it fits', () => {
-			const ctx = createMockCtx();
-			ctx.measureText = jest.fn(
-				(t: string) => ({ width: t.length * 4 } as TextMetrics),
-			);
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, name: 'short', event: [] },
-				x: 0,
-				y: 0,
-				width: 100,
-				levelIndex: 0,
-				spanRectsArray: [],
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			expect(ctx.fillText).toHaveBeenCalledWith(
-				'short',
-				expect.any(Number),
-				expect.any(Number),
-			);
-		});
-
-		it('truncates text when it exceeds available width', () => {
-			const ctx = createMockCtx();
-			ctx.measureText = jest.fn(
-				(t: string) =>
-					({
-						width: t.includes('...') ? 24 : t.length * 10,
-					} as TextMetrics),
-			);
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, name: 'very-long-span-name', event: [] },
-				x: 0,
-				y: 0,
-				width: 50,
-				levelIndex: 0,
-				spanRectsArray: [],
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			const fillTextCalls = (ctx.fillText as jest.Mock).mock.calls;
-			const nameArg = fillTextCalls.find((c) => c[0] !== '50ms')?.[0];
-			expect(nameArg).toBeDefined();
-			expect(nameArg).toMatch(/\.\.\.$/);
-		});
-	});
-
-	describe('drawEventDot', () => {
-		it('uses error styling when isError is true', () => {
-			const ctx = createMockCtx();
-
-			drawEventDot({
-				ctx,
-				x: 50,
-				y: 11,
-				isError: true,
-				isDarkMode: false,
-				eventDotSize: 6,
-			});
-
-			expect(ctx.save).toHaveBeenCalled();
-			expect(ctx.translate).toHaveBeenCalledWith(50, 11);
-			expect(ctx.rotate).toHaveBeenCalledWith(Math.PI / 4);
-			expect(ctx.fillStyle).toBe('rgb(220, 38, 38)');
-			expect(ctx.strokeStyle).toBe('rgb(153, 27, 27)');
-			expect(ctx.fillRect).toHaveBeenCalledWith(-3, -3, 6, 6);
-			expect(ctx.strokeRect).toHaveBeenCalledWith(-3, -3, 6, 6);
-			expect(ctx.restore).toHaveBeenCalled();
-		});
-
-		it('uses normal styling when isError is false', () => {
-			const ctx = createMockCtx();
-
-			drawEventDot({
-				ctx,
-				x: 0,
-				y: 0,
-				isError: false,
-				isDarkMode: false,
-				eventDotSize: 6,
-			});
-
-			expect(ctx.fillStyle).toBe('rgb(6, 182, 212)');
-			expect(ctx.strokeStyle).toBe('rgb(8, 145, 178)');
-		});
-
-		it('uses dark mode colors for error', () => {
-			const ctx = createMockCtx();
-
-			drawEventDot({
-				ctx,
-				x: 0,
-				y: 0,
-				isError: true,
-				isDarkMode: true,
-				eventDotSize: 6,
-			});
-
-			expect(ctx.fillStyle).toBe('rgb(239, 68, 68)');
-			expect(ctx.strokeStyle).toBe('rgb(185, 28, 28)');
-		});
-
-		it('uses dark mode colors for non-error', () => {
-			const ctx = createMockCtx();
-
-			drawEventDot({
-				ctx,
-				x: 0,
-				y: 0,
-				isError: false,
-				isDarkMode: true,
-				eventDotSize: 6,
-			});
-
-			expect(ctx.fillStyle).toBe('rgb(14, 165, 233)');
-			expect(ctx.strokeStyle).toBe('rgb(2, 132, 199)');
-		});
-
-		it('calls save, translate, rotate, restore', () => {
-			const ctx = createMockCtx();
-
-			drawEventDot({
-				ctx,
-				x: 10,
-				y: 20,
-				isError: false,
-				isDarkMode: false,
-				eventDotSize: 4,
-			});
-
-			expect(ctx.save).toHaveBeenCalled();
-			expect(ctx.translate).toHaveBeenCalledWith(10, 20);
-			expect(ctx.rotate).toHaveBeenCalledWith(Math.PI / 4);
-			expect(ctx.restore).toHaveBeenCalled();
-		});
-	});
-
-	describe('createStripePattern (via drawSpanBar)', () => {
-		it('uses pattern when createPattern returns non-null', () => {
-			const ctx = createMockCtx();
-			const mockPattern = {} as CanvasPattern;
-			(ctx.createPattern as jest.Mock).mockReturnValue(mockPattern);
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, spanId: 'p', event: [] },
-				x: 0,
-				y: 0,
-				width: MIN_WIDTH_FOR_NAME - 1,
-				levelIndex: 0,
-				spanRectsArray: [],
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-				hoveredSpanId: 'p',
-			});
-
-			expect(ctx.createPattern).toHaveBeenCalled();
-			expect(ctx.fillStyle).toBe(mockPattern);
-			expect(ctx.fill).toHaveBeenCalled();
-		});
-
-		it('skips fill when createPattern returns null', () => {
-			const ctx = createMockCtx();
-			(ctx.createPattern as jest.Mock).mockReturnValue(null);
-
-			drawSpanBar({
-				ctx,
-				span: { ...MOCK_SPAN, spanId: 'p', event: [] },
-				x: 0,
-				y: 0,
-				width: MIN_WIDTH_FOR_NAME - 1,
-				levelIndex: 0,
-				spanRectsArray: [],
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-				selectedSpanId: 'p',
-			});
-
-			expect(ctx.fill).not.toHaveBeenCalled();
-			expect(ctx.stroke).toHaveBeenCalled();
-		});
-	});
-
-	describe('drawSpanBar with events', () => {
-		it('draws event dots for each span event', () => {
-			const ctx = createMockCtx();
-			const spanWithEvents = {
-				...MOCK_SPAN,
-				event: [
-					{
-						name: 'e1',
-						timeUnixNano: 1_010_000_000,
-						attributeMap: {},
-						isError: false,
-					},
-					{
-						name: 'e2',
-						timeUnixNano: 1_025_000_000,
-						attributeMap: {},
-						isError: true,
-					},
-				],
-			};
-
-			drawSpanBar({
-				ctx,
-				span: spanWithEvents,
-				x: 0,
-				y: 0,
-				width: 100,
-				levelIndex: 0,
-				spanRectsArray: [],
-				color: '#000',
-				isDarkMode: false,
-				metrics: METRICS,
-			});
-
-			expect(ctx.save).toHaveBeenCalledTimes(3);
-			expect(ctx.translate).toHaveBeenCalledTimes(2);
-			expect(ctx.fillRect).toHaveBeenCalledTimes(2);
-		});
-	});
-});

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/testUtils.ts

@@ -1,54 +0,0 @@
-import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
-
-/** Minimal FlamegraphSpan for unit tests */
-export const MOCK_SPAN: FlamegraphSpan = {
-	timestamp: 1000,
-	durationNano: 50_000_000, // 50ms
-	spanId: 'span-1',
-	parentSpanId: '',
-	traceId: 'trace-1',
-	hasError: false,
-	serviceName: 'test-service',
-	name: 'test-span',
-	level: 0,
-	event: [],
-};
-
-/** Nested spans structure for findSpanById tests */
-export const MOCK_SPANS: FlamegraphSpan[][] = [
-	[
-		{
-			...MOCK_SPAN,
-			spanId: 'root',
-			parentSpanId: '',
-			level: 0,
-		},
-	],
-	[
-		{
-			...MOCK_SPAN,
-			spanId: 'child-a',
-			parentSpanId: 'root',
-			level: 1,
-		},
-		{
-			...MOCK_SPAN,
-			spanId: 'child-b',
-			parentSpanId: 'root',
-			level: 1,
-		},
-	],
-	[
-		{
-			...MOCK_SPAN,
-			spanId: 'grandchild',
-			parentSpanId: 'child-a',
-			level: 2,
-		},
-	],
-];
-
-export const MOCK_TRACE_METADATA = {
-	startTime: 0,
-	endTime: 1000,
-};

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/useFlamegraphDrag.test.ts

@@ -1,196 +0,0 @@
-import React from 'react';
-import { act, renderHook } from '@testing-library/react';
-
-import { useFlamegraphDrag } from '../hooks/useFlamegraphDrag';
-import { MOCK_TRACE_METADATA } from './testUtils';
-
-function createMockCanvas(): HTMLCanvasElement {
-	const canvas = document.createElement('canvas');
-	canvas.getBoundingClientRect = jest.fn(
-		(): DOMRect =>
-			({
-				left: 0,
-				top: 0,
-				width: 800,
-				height: 400,
-				x: 0,
-				y: 0,
-				bottom: 400,
-				right: 800,
-				toJSON: (): Record<string, unknown> => ({}),
-			} as DOMRect),
-	);
-	return canvas;
-}
-
-function createMockContainer(): HTMLDivElement {
-	const div = document.createElement('div');
-	Object.defineProperty(div, 'clientHeight', { value: 400 });
-	return div;
-}
-
-const defaultArgs = {
-	canvasRef: { current: createMockCanvas() },
-	containerRef: { current: createMockContainer() },
-	traceMetadata: MOCK_TRACE_METADATA,
-	viewStartRef: { current: 0 },
-	viewEndRef: { current: 1000 },
-	setViewStartTs: jest.fn(),
-	setViewEndTs: jest.fn(),
-	scrollTopRef: { current: 0 },
-	setScrollTop: jest.fn(),
-	totalHeight: 1000,
-};
-
-describe('useFlamegraphDrag', () => {
-	beforeEach(() => {
-		jest.clearAllMocks();
-		defaultArgs.viewStartRef.current = 0;
-		defaultArgs.viewEndRef.current = 1000;
-		defaultArgs.scrollTopRef.current = 0;
-	});
-
-	it('starts drag state on mousedown', () => {
-		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
-
-		act(() => {
-			result.current.handleMouseDown(({
-				button: 0,
-				clientX: 100,
-				clientY: 50,
-				preventDefault: jest.fn(),
-			} as unknown) as React.MouseEvent);
-		});
-
-		expect(result.current.isDraggingRef.current).toBe(true);
-	});
-
-	it('ignores non-left button mousedown', () => {
-		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
-
-		act(() => {
-			result.current.handleMouseDown(({
-				button: 1,
-				clientX: 100,
-				clientY: 50,
-				preventDefault: jest.fn(),
-			} as unknown) as React.MouseEvent);
-		});
-
-		expect(result.current.isDraggingRef.current).toBe(false);
-	});
-
-	it('updates pan/scroll on mousemove', () => {
-		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
-
-		act(() => {
-			result.current.handleMouseDown(({
-				button: 0,
-				clientX: 100,
-				clientY: 50,
-				preventDefault: jest.fn(),
-			} as unknown) as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleMouseMove(({
-				clientX: 150,
-				clientY: 100,
-			} as unknown) as React.MouseEvent);
-		});
-
-		expect(defaultArgs.setViewStartTs).toHaveBeenCalled();
-		expect(defaultArgs.setViewEndTs).toHaveBeenCalled();
-		expect(defaultArgs.setScrollTop).toHaveBeenCalled();
-	});
-
-	it('does not set suppressClickRef when movement is below threshold', () => {
-		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
-
-		act(() => {
-			result.current.handleMouseDown(({
-				button: 0,
-				clientX: 100,
-				clientY: 50,
-				preventDefault: jest.fn(),
-			} as unknown) as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleMouseMove(({
-				clientX: 102,
-				clientY: 51,
-			} as unknown) as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleMouseUp();
-		});
-
-		expect(result.current.suppressClickRef.current).toBe(false);
-	});
-
-	it('sets suppressClickRef when drag exceeds threshold', () => {
-		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
-
-		act(() => {
-			result.current.handleMouseDown(({
-				button: 0,
-				clientX: 100,
-				clientY: 50,
-				preventDefault: jest.fn(),
-			} as unknown) as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleMouseMove(({
-				clientX: 150,
-				clientY: 100,
-			} as unknown) as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleMouseUp();
-		});
-
-		expect(result.current.suppressClickRef.current).toBe(true);
-	});
-
-	it('resets drag state on mouseup', () => {
-		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
-
-		act(() => {
-			result.current.handleMouseDown(({
-				button: 0,
-				clientX: 100,
-				clientY: 50,
-				preventDefault: jest.fn(),
-			} as unknown) as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleMouseUp();
-		});
-
-		expect(result.current.isDraggingRef.current).toBe(false);
-	});
-
-	it('cancels drag on mouseleave', () => {
-		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
-
-		act(() => {
-			result.current.handleMouseDown(({
-				button: 0,
-				clientX: 100,
-				clientY: 50,
-				preventDefault: jest.fn(),
-			} as unknown) as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleDragMouseLeave();
-		});
-
-		expect(result.current.isDraggingRef.current).toBe(false);
-	});
-});

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/useFlamegraphHover.test.ts

@@ -1,174 +0,0 @@
-import type React from 'react';
-import { act, renderHook } from '@testing-library/react';
-
-import { useFlamegraphHover } from '../hooks/useFlamegraphHover';
-import type { SpanRect } from '../types';
-import { MOCK_SPAN, MOCK_TRACE_METADATA } from './testUtils';
-
-function createMockCanvas(): HTMLCanvasElement {
-	const canvas = document.createElement('canvas');
-	canvas.width = 800;
-	canvas.height = 400;
-	canvas.getBoundingClientRect = jest.fn(
-		(): DOMRect =>
-			({
-				left: 0,
-				top: 0,
-				width: 800,
-				height: 400,
-				x: 0,
-				y: 0,
-				bottom: 400,
-				right: 800,
-				toJSON: (): Record<string, unknown> => ({}),
-			} as DOMRect),
-	);
-	return canvas;
-}
-
-const spanRect: SpanRect = {
-	span: { ...MOCK_SPAN, spanId: 'hover-span', name: 'test-span' },
-	x: 100,
-	y: 50,
-	width: 200,
-	height: 22,
-	level: 0,
-};
-
-const defaultArgs = {
-	canvasRef: { current: createMockCanvas() },
-	spanRectsRef: { current: [spanRect] },
-	traceMetadata: MOCK_TRACE_METADATA,
-	viewStartTs: MOCK_TRACE_METADATA.startTime,
-	viewEndTs: MOCK_TRACE_METADATA.endTime,
-	isDraggingRef: { current: false },
-	suppressClickRef: { current: false },
-	onSpanClick: jest.fn(),
-	isDarkMode: false,
-};
-
-describe('useFlamegraphHover', () => {
-	beforeEach(() => {
-		Object.defineProperty(window, 'devicePixelRatio', {
-			configurable: true,
-			value: 1,
-		});
-		jest.clearAllMocks();
-		defaultArgs.spanRectsRef.current = [spanRect];
-		defaultArgs.isDraggingRef.current = false;
-		defaultArgs.suppressClickRef.current = false;
-	});
-
-	it('sets hoveredSpanId and tooltipContent when hovering on span', () => {
-		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
-
-		act(() => {
-			result.current.handleHoverMouseMove({
-				clientX: 150,
-				clientY: 61,
-			} as React.MouseEvent);
-		});
-
-		expect(result.current.hoveredSpanId).toBe('hover-span');
-		expect(result.current.tooltipContent).not.toBeNull();
-		expect(result.current.tooltipContent?.spanName).toBe('test-span');
-		expect(result.current.tooltipContent?.clientX).toBe(150);
-		expect(result.current.tooltipContent?.clientY).toBe(61);
-	});
-
-	it('clears hover when moving to empty area', () => {
-		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
-
-		act(() => {
-			result.current.handleHoverMouseMove({
-				clientX: 150,
-				clientY: 61,
-			} as React.MouseEvent);
-		});
-
-		expect(result.current.hoveredSpanId).toBe('hover-span');
-
-		act(() => {
-			result.current.handleHoverMouseMove({
-				clientX: 10,
-				clientY: 10,
-			} as React.MouseEvent);
-		});
-
-		expect(result.current.hoveredSpanId).toBeNull();
-		expect(result.current.tooltipContent).toBeNull();
-	});
-
-	it('clears hover on mouse leave', () => {
-		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
-
-		act(() => {
-			result.current.handleHoverMouseMove({
-				clientX: 150,
-				clientY: 61,
-			} as React.MouseEvent);
-		});
-
-		act(() => {
-			result.current.handleHoverMouseLeave();
-		});
-
-		expect(result.current.hoveredSpanId).toBeNull();
-		expect(result.current.tooltipContent).toBeNull();
-	});
-
-	it('suppresses click when suppressClickRef is set', () => {
-		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
-		defaultArgs.suppressClickRef.current = true;
-
-		act(() => {
-			result.current.handleClick({
-				clientX: 150,
-				clientY: 61,
-			} as React.MouseEvent);
-		});
-
-		expect(defaultArgs.onSpanClick).not.toHaveBeenCalled();
-	});
-
-	it('calls onSpanClick when clicking on span', () => {
-		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
-
-		act(() => {
-			result.current.handleClick({
-				clientX: 150,
-				clientY: 61,
-			} as React.MouseEvent);
-		});
-
-		expect(defaultArgs.onSpanClick).toHaveBeenCalledWith('hover-span');
-	});
-
-	it('uses clientX/clientY for tooltip positioning', () => {
-		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
-
-		act(() => {
-			result.current.handleHoverMouseMove({
-				clientX: 200,
-				clientY: 60,
-			} as React.MouseEvent);
-		});
-
-		expect(result.current.tooltipContent?.clientX).toBe(200);
-		expect(result.current.tooltipContent?.clientY).toBe(60);
-	});
-
-	it('does not update hover during drag', () => {
-		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
-		defaultArgs.isDraggingRef.current = true;
-
-		act(() => {
-			result.current.handleHoverMouseMove({
-				clientX: 150,
-				clientY: 61,
-			} as React.MouseEvent);
-		});
-
-		expect(result.current.hoveredSpanId).toBeNull();
-	});
-});

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/useFlamegraphZoom.test.ts

@@ -1,279 +0,0 @@
-import { act, renderHook } from '@testing-library/react';
-
-import { DEFAULT_ROW_HEIGHT, MIN_VISIBLE_SPAN_MS } from '../constants';
-import { useFlamegraphZoom } from '../hooks/useFlamegraphZoom';
-import { MOCK_TRACE_METADATA } from './testUtils';
-
-function createMockCanvas(): HTMLCanvasElement {
-	const canvas = document.createElement('canvas');
-	canvas.width = 800;
-	canvas.height = 400;
-	canvas.getBoundingClientRect = jest.fn(
-		(): DOMRect =>
-			({
-				left: 0,
-				top: 0,
-				width: 800,
-				height: 400,
-				x: 0,
-				y: 0,
-				bottom: 400,
-				right: 800,
-				toJSON: (): Record<string, unknown> => ({}),
-			} as DOMRect),
-	);
-	return canvas;
-}
-
-describe('useFlamegraphZoom', () => {
-	const traceMetadata = { ...MOCK_TRACE_METADATA };
-
-	beforeEach(() => {
-		Object.defineProperty(window, 'devicePixelRatio', {
-			configurable: true,
-			value: 1,
-		});
-	});
-
-	it('handleResetZoom restores traceMetadata.startTime/endTime', () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setRowHeight = jest.fn();
-		const viewStartRef = { current: 100 };
-		const viewEndRef = { current: 500 };
-		const rowHeightRef = { current: 30 };
-		const canvasRef = { current: createMockCanvas() };
-
-		const { result } = renderHook(() =>
-			useFlamegraphZoom({
-				canvasRef,
-				traceMetadata,
-				viewStartRef,
-				viewEndRef,
-				rowHeightRef,
-				setViewStartTs,
-				setViewEndTs,
-				setRowHeight,
-			}),
-		);
-
-		act(() => {
-			result.current.handleResetZoom();
-		});
-
-		expect(setViewStartTs).toHaveBeenCalledWith(traceMetadata.startTime);
-		expect(setViewEndTs).toHaveBeenCalledWith(traceMetadata.endTime);
-		expect(setRowHeight).toHaveBeenCalledWith(DEFAULT_ROW_HEIGHT);
-		expect(viewStartRef.current).toBe(traceMetadata.startTime);
-		expect(viewEndRef.current).toBe(traceMetadata.endTime);
-		expect(rowHeightRef.current).toBe(DEFAULT_ROW_HEIGHT);
-	});
-
-	it('wheel zoom in decreases visible time range', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setRowHeight = jest.fn();
-		const viewStartRef = { current: traceMetadata.startTime };
-		const viewEndRef = { current: traceMetadata.endTime };
-		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
-		const canvas = createMockCanvas();
-		const canvasRef = { current: canvas };
-
-		renderHook(() =>
-			useFlamegraphZoom({
-				canvasRef,
-				traceMetadata,
-				viewStartRef,
-				viewEndRef,
-				rowHeightRef,
-				setViewStartTs,
-				setViewEndTs,
-				setRowHeight,
-			}),
-		);
-
-		const initialSpan = viewEndRef.current - viewStartRef.current;
-
-		await act(async () => {
-			canvas.dispatchEvent(
-				new WheelEvent('wheel', {
-					clientX: 400,
-					deltaY: -100,
-					bubbles: true,
-				}),
-			);
-		});
-
-		await act(async () => {
-			await new Promise((r) => requestAnimationFrame(r));
-		});
-
-		expect(setViewStartTs).toHaveBeenCalled();
-		expect(setViewEndTs).toHaveBeenCalled();
-		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
-		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
-		if (newStart != null && newEnd != null) {
-			const newSpan = newEnd - newStart;
-			expect(newSpan).toBeLessThan(initialSpan);
-		}
-	});
-
-	it('wheel zoom out increases visible time range', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setRowHeight = jest.fn();
-		const halfSpan = (traceMetadata.endTime - traceMetadata.startTime) / 2;
-		const viewStartRef = { current: traceMetadata.startTime + halfSpan * 0.25 };
-		const viewEndRef = { current: traceMetadata.startTime + halfSpan * 0.75 };
-		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
-		const canvas = createMockCanvas();
-		const canvasRef = { current: canvas };
-
-		renderHook(() =>
-			useFlamegraphZoom({
-				canvasRef,
-				traceMetadata,
-				viewStartRef,
-				viewEndRef,
-				rowHeightRef,
-				setViewStartTs,
-				setViewEndTs,
-				setRowHeight,
-			}),
-		);
-
-		const initialSpan = viewEndRef.current - viewStartRef.current;
-
-		await act(async () => {
-			canvas.dispatchEvent(
-				new WheelEvent('wheel', {
-					clientX: 400,
-					deltaY: 100,
-					bubbles: true,
-				}),
-			);
-		});
-
-		await act(async () => {
-			await new Promise((r) => requestAnimationFrame(r));
-		});
-
-		expect(setViewStartTs).toHaveBeenCalled();
-		expect(setViewEndTs).toHaveBeenCalled();
-		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
-		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
-		if (newStart != null && newEnd != null) {
-			const newSpan = newEnd - newStart;
-			expect(newSpan).toBeGreaterThanOrEqual(initialSpan);
-		}
-	});
-
-	it('clamps zoom to MIN_VISIBLE_SPAN_MS', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setRowHeight = jest.fn();
-		const viewStartRef = { current: traceMetadata.startTime };
-		const viewEndRef = { current: traceMetadata.startTime + 100 };
-		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
-		const canvas = createMockCanvas();
-		const canvasRef = { current: canvas };
-
-		renderHook(() =>
-			useFlamegraphZoom({
-				canvasRef,
-				traceMetadata,
-				viewStartRef,
-				viewEndRef,
-				rowHeightRef,
-				setViewStartTs,
-				setViewEndTs,
-				setRowHeight,
-			}),
-		);
-
-		await act(async () => {
-			canvas.dispatchEvent(
-				new WheelEvent('wheel', {
-					clientX: 400,
-					deltaY: 10000,
-					bubbles: true,
-				}),
-			);
-		});
-
-		await act(async () => {
-			await new Promise((r) => requestAnimationFrame(r));
-		});
-
-		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
-		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
-		if (newStart != null && newEnd != null) {
-			const newSpan = newEnd - newStart;
-			expect(newSpan).toBeGreaterThanOrEqual(MIN_VISIBLE_SPAN_MS);
-		}
-	});
-
-	it('clamps viewStart/viewEnd to trace bounds', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setRowHeight = jest.fn();
-		const viewStartRef = { current: traceMetadata.startTime };
-		const viewEndRef = { current: traceMetadata.endTime };
-		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
-		const canvas = createMockCanvas();
-		const canvasRef = { current: canvas };
-
-		renderHook(() =>
-			useFlamegraphZoom({
-				canvasRef,
-				traceMetadata,
-				viewStartRef,
-				viewEndRef,
-				rowHeightRef,
-				setViewStartTs,
-				setViewEndTs,
-				setRowHeight,
-			}),
-		);
-
-		await act(async () => {
-			canvas.dispatchEvent(
-				new WheelEvent('wheel', {
-					clientX: 400,
-					deltaY: -5000,
-					bubbles: true,
-				}),
-			);
-		});
-
-		await act(async () => {
-			await new Promise((r) => requestAnimationFrame(r));
-		});
-
-		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
-		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
-		if (newStart != null && newEnd != null) {
-			expect(newStart).toBeGreaterThanOrEqual(traceMetadata.startTime);
-			expect(newEnd).toBeLessThanOrEqual(traceMetadata.endTime);
-		}
-	});
-
-	it('returns isOverFlamegraphRef', () => {
-		const canvasRef = { current: createMockCanvas() };
-		const { result } = renderHook(() =>
-			useFlamegraphZoom({
-				canvasRef,
-				traceMetadata,
-				viewStartRef: { current: 0 },
-				viewEndRef: { current: 1000 },
-				rowHeightRef: { current: 24 },
-				setViewStartTs: jest.fn(),
-				setViewEndTs: jest.fn(),
-				setRowHeight: jest.fn(),
-			}),
-		);
-
-		expect(result.current.isOverFlamegraphRef).toBeDefined();
-		expect(result.current.isOverFlamegraphRef.current).toBe(false);
-	});
-});

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/useScrollToSpan.test.tsx

@@ -1,212 +0,0 @@
-import type { Dispatch, SetStateAction } from 'react';
-import { useRef } from 'react';
-import { act, render, waitFor } from '@testing-library/react';
-
-import { useScrollToSpan } from '../hooks/useScrollToSpan';
-import { MOCK_SPANS, MOCK_TRACE_METADATA } from './testUtils';
-
-function TestWrapper({
-	firstSpanAtFetchLevel,
-	spans,
-	traceMetadata,
-	setViewStartTs,
-	setViewEndTs,
-	setScrollTop,
-}: {
-	firstSpanAtFetchLevel: string;
-	spans: typeof MOCK_SPANS;
-	traceMetadata: typeof MOCK_TRACE_METADATA;
-	setViewStartTs: Dispatch<SetStateAction<number>>;
-	setViewEndTs: Dispatch<SetStateAction<number>>;
-	setScrollTop: Dispatch<SetStateAction<number>>;
-}): JSX.Element {
-	const containerRef = useRef<HTMLDivElement>(null);
-	const viewStartRef = useRef(traceMetadata.startTime);
-	const viewEndRef = useRef(traceMetadata.endTime);
-	const scrollTopRef = useRef(0);
-
-	useScrollToSpan({
-		firstSpanAtFetchLevel,
-		spans,
-		traceMetadata,
-		containerRef,
-		viewStartRef,
-		viewEndRef,
-		scrollTopRef,
-		rowHeight: 24,
-		setViewStartTs,
-		setViewEndTs,
-		setScrollTop,
-	});
-
-	return <div ref={containerRef} data-testid="container" />;
-}
-
-describe('useScrollToSpan', () => {
-	beforeEach(() => {
-		Object.defineProperty(HTMLElement.prototype, 'clientHeight', {
-			configurable: true,
-			value: 400,
-		});
-	});
-
-	it('does not update when firstSpanAtFetchLevel is empty', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setScrollTop = jest.fn();
-
-		render(
-			<TestWrapper
-				firstSpanAtFetchLevel=""
-				spans={MOCK_SPANS}
-				traceMetadata={MOCK_TRACE_METADATA}
-				setViewStartTs={setViewStartTs}
-				setViewEndTs={setViewEndTs}
-				setScrollTop={setScrollTop}
-			/>,
-		);
-
-		await waitFor(() => {
-			expect(setViewStartTs).not.toHaveBeenCalled();
-			expect(setViewEndTs).not.toHaveBeenCalled();
-			expect(setScrollTop).not.toHaveBeenCalled();
-		});
-	});
-
-	it('does not update when spans are empty', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setScrollTop = jest.fn();
-
-		render(
-			<TestWrapper
-				firstSpanAtFetchLevel="root"
-				spans={[]}
-				traceMetadata={MOCK_TRACE_METADATA}
-				setViewStartTs={setViewStartTs}
-				setViewEndTs={setViewEndTs}
-				setScrollTop={setScrollTop}
-			/>,
-		);
-
-		await waitFor(() => {
-			expect(setViewStartTs).not.toHaveBeenCalled();
-			expect(setViewEndTs).not.toHaveBeenCalled();
-			expect(setScrollTop).not.toHaveBeenCalled();
-		});
-	});
-
-	it('does not update when target span not found', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setScrollTop = jest.fn();
-
-		render(
-			<TestWrapper
-				firstSpanAtFetchLevel="nonexistent"
-				spans={MOCK_SPANS}
-				traceMetadata={MOCK_TRACE_METADATA}
-				setViewStartTs={setViewStartTs}
-				setViewEndTs={setViewEndTs}
-				setScrollTop={setScrollTop}
-			/>,
-		);
-
-		await waitFor(() => {
-			expect(setViewStartTs).not.toHaveBeenCalled();
-			expect(setViewEndTs).not.toHaveBeenCalled();
-			expect(setScrollTop).not.toHaveBeenCalled();
-		});
-	});
-
-	it('calls setters when target span found', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-		const setScrollTop = jest.fn();
-
-		const { getByTestId } = render(
-			<TestWrapper
-				firstSpanAtFetchLevel="grandchild"
-				spans={MOCK_SPANS}
-				traceMetadata={MOCK_TRACE_METADATA}
-				setViewStartTs={setViewStartTs}
-				setViewEndTs={setViewEndTs}
-				setScrollTop={setScrollTop}
-			/>,
-		);
-
-		expect(getByTestId('container')).toBeInTheDocument();
-
-		await waitFor(() => {
-			expect(setViewStartTs).toHaveBeenCalled();
-			expect(setViewEndTs).toHaveBeenCalled();
-			expect(setScrollTop).toHaveBeenCalled();
-		});
-
-		const [viewStart] = setViewStartTs.mock.calls[0];
-		const [viewEnd] = setViewEndTs.mock.calls[0];
-		const [scrollTop] = setScrollTop.mock.calls[0];
-
-		expect(viewEnd - viewStart).toBeGreaterThan(0);
-		expect(viewStart).toBeGreaterThanOrEqual(MOCK_TRACE_METADATA.startTime);
-		expect(viewEnd).toBeLessThanOrEqual(MOCK_TRACE_METADATA.endTime);
-		expect(scrollTop).toBeGreaterThanOrEqual(0);
-	});
-
-	it('centers span vertically (scrollTop centers span row)', async () => {
-		const setScrollTop = jest.fn();
-
-		await act(async () => {
-			render(
-				<TestWrapper
-					firstSpanAtFetchLevel="grandchild"
-					spans={MOCK_SPANS}
-					traceMetadata={MOCK_TRACE_METADATA}
-					setViewStartTs={jest.fn()}
-					setViewEndTs={jest.fn()}
-					setScrollTop={setScrollTop}
-				/>,
-			);
-		});
-
-		await waitFor(() => expect(setScrollTop).toHaveBeenCalled());
-
-		const [scrollTop] = setScrollTop.mock.calls[0];
-		const levelIndex = 2;
-		const rowHeight = 24;
-		const viewportHeight = 400;
-		const expectedCenter =
-			levelIndex * rowHeight - viewportHeight / 2 + rowHeight / 2;
-		expect(scrollTop).toBeCloseTo(Math.max(0, expectedCenter), -1);
-	});
-
-	it('zooms horizontally to span with 2x duration padding', async () => {
-		const setViewStartTs = jest.fn();
-		const setViewEndTs = jest.fn();
-
-		await act(async () => {
-			render(
-				<TestWrapper
-					firstSpanAtFetchLevel="root"
-					spans={MOCK_SPANS}
-					traceMetadata={MOCK_TRACE_METADATA}
-					setViewStartTs={setViewStartTs}
-					setViewEndTs={setViewEndTs}
-					setScrollTop={jest.fn()}
-				/>,
-			);
-		});
-
-		await waitFor(() => {
-			expect(setViewStartTs).toHaveBeenCalled();
-			expect(setViewEndTs).toHaveBeenCalled();
-		});
-
-		const [viewStart] = setViewStartTs.mock.calls[0];
-		const [viewEnd] = setViewEndTs.mock.calls[0];
-		const visibleWindow = viewEnd - viewStart;
-		const rootSpan = MOCK_SPANS[0][0];
-		const spanDurationMs = rootSpan.durationNano / 1e6;
-		expect(visibleWindow).toBeGreaterThanOrEqual(Math.max(spanDurationMs * 2, 5));
-	});
-});

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/utils.math.test.ts

@@ -1,135 +0,0 @@
-import {
-	clamp,
-	findSpanById,
-	formatDuration,
-	getFlamegraphRowMetrics,
-} from '../utils';
-import { MOCK_SPANS } from './testUtils';
-
-jest.mock('container/TraceDetail/utils', () => ({
-	convertTimeToRelevantUnit: (
-		valueMs: number,
-	): { time: number; timeUnitName: string } => {
-		if (valueMs === 0) {
-			return { time: 0, timeUnitName: 'ms' };
-		}
-		if (valueMs < 1) {
-			return { time: valueMs, timeUnitName: 'ms' };
-		}
-		if (valueMs < 1000) {
-			return { time: valueMs, timeUnitName: 'ms' };
-		}
-		if (valueMs < 60_000) {
-			return { time: valueMs / 1000, timeUnitName: 's' };
-		}
-		if (valueMs < 3_600_000) {
-			return { time: valueMs / 60_000, timeUnitName: 'm' };
-		}
-		return { time: valueMs / 3_600_000, timeUnitName: 'hr' };
-	},
-}));
-
-describe('Pure Math and Data Utils', () => {
-	describe('clamp', () => {
-		it('returns value when within range', () => {
-			expect(clamp(5, 0, 10)).toBe(5);
-			expect(clamp(-3, -5, 5)).toBe(-3);
-		});
-
-		it('returns min when value is below min', () => {
-			expect(clamp(-1, 0, 10)).toBe(0);
-			expect(clamp(2, 5, 10)).toBe(5);
-		});
-
-		it('returns max when value is above max', () => {
-			expect(clamp(11, 0, 10)).toBe(10);
-			expect(clamp(100, 0, 50)).toBe(50);
-		});
-
-		it('handles min === max', () => {
-			expect(clamp(5, 7, 7)).toBe(7);
-			expect(clamp(7, 7, 7)).toBe(7);
-		});
-	});
-
-	describe('findSpanById', () => {
-		it('finds span in first level', () => {
-			const result = findSpanById(MOCK_SPANS, 'root');
-			expect(result).not.toBeNull();
-			expect(result?.span.spanId).toBe('root');
-			expect(result?.levelIndex).toBe(0);
-		});
-
-		it('finds span in nested level', () => {
-			const result = findSpanById(MOCK_SPANS, 'grandchild');
-			expect(result).not.toBeNull();
-			expect(result?.span.spanId).toBe('grandchild');
-			expect(result?.levelIndex).toBe(2);
-		});
-
-		it('returns null when span not found', () => {
-			expect(findSpanById(MOCK_SPANS, 'nonexistent')).toBeNull();
-		});
-
-		it('handles empty spans', () => {
-			expect(findSpanById([], 'root')).toBeNull();
-			expect(findSpanById([[], []], 'root')).toBeNull();
-		});
-	});
-
-	describe('getFlamegraphRowMetrics', () => {
-		it('computes normal row height metrics (24px)', () => {
-			const m = getFlamegraphRowMetrics(24);
-			expect(m.ROW_HEIGHT).toBe(24);
-			expect(m.SPAN_BAR_HEIGHT).toBe(22);
-			expect(m.SPAN_BAR_Y_OFFSET).toBe(1);
-			expect(m.EVENT_DOT_SIZE).toBe(6);
-		});
-
-		it('clamps span bar height to max for large row heights', () => {
-			const m = getFlamegraphRowMetrics(100);
-			expect(m.SPAN_BAR_HEIGHT).toBe(22);
-			expect(m.SPAN_BAR_Y_OFFSET).toBe(39);
-		});
-
-		it('clamps span bar height to min for small row heights', () => {
-			const m = getFlamegraphRowMetrics(6);
-			expect(m.SPAN_BAR_HEIGHT).toBe(8);
-			// spanBarYOffset = floor((6-8)/2) = -1 when bar exceeds row height
-			expect(m.SPAN_BAR_Y_OFFSET).toBe(-1);
-		});
-
-		it('clamps event dot size within min/max', () => {
-			const mSmall = getFlamegraphRowMetrics(6);
-			expect(mSmall.EVENT_DOT_SIZE).toBe(4);
-
-			const mLarge = getFlamegraphRowMetrics(24);
-			expect(mLarge.EVENT_DOT_SIZE).toBe(6);
-		});
-	});
-
-	describe('formatDuration', () => {
-		it('formats nanos as ms', () => {
-			// 1e6 nanos = 1ms
-			expect(formatDuration(1_000_000)).toBe('1ms');
-		});
-
-		it('formats larger durations as s/m/hr', () => {
-			// 2e9 nanos = 2000ms = 2s
-			expect(formatDuration(2_000_000_000)).toBe('2s');
-		});
-
-		it('formats zero duration', () => {
-			expect(formatDuration(0)).toBe('0ms');
-		});
-
-		it('formats very small values', () => {
-			// 1000 nanos = 0.001ms → mock returns { time: 0.001, timeUnitName: 'ms' }
-			expect(formatDuration(1000)).toBe('0ms');
-		});
-
-		it('formats decimal seconds correctly', () => {
-			expect(formatDuration(1_500_000_000)).toBe('1.5s');
-		});
-	});
-});

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/__tests__/utils.presentation.test.ts

@@ -1,67 +0,0 @@
-import { getSpanColor } from '../utils';
-import { MOCK_SPAN } from './testUtils';
-
-const mockGenerateColor = jest.fn();
-
-jest.mock('lib/uPlotLib/utils/generateColor', () => ({
-	generateColor: (key: string, colorMap: Record<string, string>): string =>
-		mockGenerateColor(key, colorMap),
-}));
-
-describe('Presentation / Styling Utils', () => {
-	beforeEach(() => {
-		jest.clearAllMocks();
-		mockGenerateColor.mockReturnValue('#2F80ED');
-	});
-
-	describe('getSpanColor', () => {
-		it('uses generated service color for normal span', () => {
-			mockGenerateColor.mockReturnValue('#1890ff');
-
-			const color = getSpanColor({
-				span: { ...MOCK_SPAN, hasError: false },
-				isDarkMode: false,
-			});
-
-			expect(mockGenerateColor).toHaveBeenCalledWith(
-				MOCK_SPAN.serviceName,
-				expect.any(Object),
-			);
-			expect(color).toBe('#1890ff');
-		});
-
-		it('overrides with error color in light mode when span has error', () => {
-			mockGenerateColor.mockReturnValue('#1890ff');
-
-			const color = getSpanColor({
-				span: { ...MOCK_SPAN, hasError: true },
-				isDarkMode: false,
-			});
-
-			expect(color).toBe('rgb(220, 38, 38)');
-		});
-
-		it('overrides with error color in dark mode when span has error', () => {
-			mockGenerateColor.mockReturnValue('#1890ff');
-
-			const color = getSpanColor({
-				span: { ...MOCK_SPAN, hasError: true },
-				isDarkMode: true,
-			});
-
-			expect(color).toBe('rgb(239, 68, 68)');
-		});
-
-		it('passes serviceName to generateColor', () => {
-			getSpanColor({
-				span: { ...MOCK_SPAN, serviceName: 'my-service' },
-				isDarkMode: false,
-			});
-
-			expect(mockGenerateColor).toHaveBeenCalledWith(
-				'my-service',
-				expect.any(Object),
-			);
-		});
-	});
-});

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/constants.ts

@@ -1,36 +0,0 @@
-export const ROW_HEIGHT = 24;
-export const SPAN_BAR_HEIGHT = 22;
-export const SPAN_BAR_Y_OFFSET = Math.floor((ROW_HEIGHT - SPAN_BAR_HEIGHT) / 2);
-export const EVENT_DOT_SIZE = 6;
-
-// Span bar sizing relative to row height (used by getFlamegraphRowMetrics)
-export const SPAN_BAR_HEIGHT_RATIO = SPAN_BAR_HEIGHT / ROW_HEIGHT;
-export const MIN_SPAN_BAR_HEIGHT = 8;
-export const MAX_SPAN_BAR_HEIGHT = SPAN_BAR_HEIGHT;
-
-// Event dot sizing relative to span bar height
-export const EVENT_DOT_SIZE_RATIO = EVENT_DOT_SIZE / SPAN_BAR_HEIGHT;
-export const MIN_EVENT_DOT_SIZE = 4;
-export const MAX_EVENT_DOT_SIZE = EVENT_DOT_SIZE;
-
-export const LABEL_FONT = '11px Inter, sans-serif';
-export const LABEL_PADDING_X = 8;
-export const MIN_WIDTH_FOR_NAME = 30;
-export const MIN_WIDTH_FOR_NAME_AND_DURATION = 80;
-
-// Dynamic row height (vertical zoom) -- disabled for now (MIN === MAX)
-export const MIN_ROW_HEIGHT = 24;
-export const MAX_ROW_HEIGHT = 24;
-export const DEFAULT_ROW_HEIGHT = MIN_ROW_HEIGHT;
-
-// Zoom intensity -- how fast zoom reacts to wheel/pinch delta
-export const PINCH_ZOOM_INTENSITY_H = 0.01;
-export const SCROLL_ZOOM_INTENSITY_H = 0.0015;
-export const PINCH_ZOOM_INTENSITY_V = 0.008;
-export const SCROLL_ZOOM_INTENSITY_V = 0.001;
-
-// Minimum visible time span in ms (prevents zooming to sub-pixel)
-export const MIN_VISIBLE_SPAN_MS = 5;
-
-// Selected span style (dashed border)
-export const DASHED_BORDER_LINE_DASH = [4, 2];

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useCanvasSetup.ts

@@ -1,55 +0,0 @@
-import { RefObject, useCallback, useEffect } from 'react';
-
-export function useCanvasSetup(
-	canvasRef: RefObject<HTMLCanvasElement>,
-	containerRef: RefObject<HTMLDivElement>,
-	onDraw: () => void,
-): void {
-	const updateCanvasSize = useCallback(() => {
-		const canvas = canvasRef.current;
-		const container = containerRef.current;
-		if (!canvas || !container) {
-			return;
-		}
-
-		const dpr = window.devicePixelRatio || 1;
-		const rect = container.getBoundingClientRect();
-		const viewportHeight = container.clientHeight;
-
-		canvas.style.width = `${rect.width}px`;
-		canvas.style.height = `${viewportHeight}px`;
-
-		const newWidth = Math.floor(rect.width * dpr);
-		const newHeight = Math.floor(viewportHeight * dpr);
-
-		if (canvas.width !== newWidth || canvas.height !== newHeight) {
-			canvas.width = newWidth;
-			canvas.height = newHeight;
-			onDraw();
-		}
-	}, [canvasRef, containerRef, onDraw]);
-
-	useEffect(() => {
-		const container = containerRef.current;
-		if (!container) {
-			return (): void => {};
-		}
-
-		const resizeObserver = new ResizeObserver(updateCanvasSize);
-		resizeObserver.observe(container);
-		updateCanvasSize();
-
-		// when dpr changes, update the canvas size
-		const dprQuery = window.matchMedia('(resolution: 1dppx)');
-		dprQuery.addEventListener('change', updateCanvasSize);
-
-		return (): void => {
-			resizeObserver.disconnect();
-			dprQuery.removeEventListener('change', updateCanvasSize);
-		};
-	}, [containerRef, updateCanvasSize]);
-
-	useEffect(() => {
-		onDraw();
-	}, [onDraw]);
-}

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphDrag.ts

@@ -1,178 +0,0 @@
-import {
-	Dispatch,
-	MouseEvent as ReactMouseEvent,
-	MutableRefObject,
-	RefObject,
-	SetStateAction,
-	useCallback,
-	useRef,
-} from 'react';
-
-import { ITraceMetadata } from '../types';
-import { clamp } from '../utils';
-
-interface UseFlamegraphDragArgs {
-	canvasRef: RefObject<HTMLCanvasElement>;
-	containerRef: RefObject<HTMLDivElement>;
-	traceMetadata: ITraceMetadata;
-	viewStartRef: MutableRefObject<number>;
-	viewEndRef: MutableRefObject<number>;
-	setViewStartTs: Dispatch<SetStateAction<number>>;
-	setViewEndTs: Dispatch<SetStateAction<number>>;
-	scrollTopRef: MutableRefObject<number>;
-	setScrollTop: Dispatch<SetStateAction<number>>;
-	totalHeight: number;
-}
-
-interface UseFlamegraphDragResult {
-	handleMouseDown: (e: ReactMouseEvent) => void;
-	handleMouseMove: (e: ReactMouseEvent) => void;
-	handleMouseUp: () => void;
-	handleDragMouseLeave: () => void;
-	suppressClickRef: MutableRefObject<boolean>;
-	isDraggingRef: MutableRefObject<boolean>;
-}
-
-const DRAG_THRESHOLD = 5;
-
-export function useFlamegraphDrag(
-	args: UseFlamegraphDragArgs,
-): UseFlamegraphDragResult {
-	const {
-		canvasRef,
-		containerRef,
-		traceMetadata,
-		viewStartRef,
-		viewEndRef,
-		setViewStartTs,
-		setViewEndTs,
-		scrollTopRef,
-		setScrollTop,
-		totalHeight,
-	} = args;
-
-	const isDraggingRef = useRef(false);
-	const dragStartRef = useRef<{ x: number; y: number } | null>(null);
-	const dragDistanceRef = useRef(0);
-	const suppressClickRef = useRef(false);
-
-	const clampScrollTop = useCallback(
-		(next: number): number => {
-			const container = containerRef.current;
-			if (!container) {
-				return 0;
-			}
-			const viewportHeight = container.clientHeight;
-			const maxScroll = Math.max(0, totalHeight - viewportHeight);
-			return clamp(next, 0, maxScroll);
-		},
-		[containerRef, totalHeight],
-	);
-
-	const handleMouseDown = useCallback(
-		(event: ReactMouseEvent): void => {
-			if (event.button !== 0) {
-				return;
-			}
-			event.preventDefault();
-
-			isDraggingRef.current = true;
-			dragStartRef.current = { x: event.clientX, y: event.clientY };
-			dragDistanceRef.current = 0;
-
-			const canvas = canvasRef.current;
-			if (canvas) {
-				canvas.style.cursor = 'grabbing';
-			}
-		},
-		[canvasRef],
-	);
-
-	const handleMouseMove = useCallback(
-		(event: ReactMouseEvent): void => {
-			if (!isDraggingRef.current || !dragStartRef.current) {
-				return;
-			}
-
-			const canvas = canvasRef.current;
-			if (!canvas) {
-				return;
-			}
-
-			const rect = canvas.getBoundingClientRect();
-			const deltaX = event.clientX - dragStartRef.current.x;
-			const deltaY = event.clientY - dragStartRef.current.y;
-
-			dragDistanceRef.current = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
-
-			// --- Horizontal pan ---
-			const timeSpan = viewEndRef.current - viewStartRef.current;
-			const deltaTime = (deltaX / rect.width) * timeSpan;
-
-			const newStart = viewStartRef.current - deltaTime;
-			const clampedStart = clamp(
-				newStart,
-				traceMetadata.startTime,
-				traceMetadata.endTime - timeSpan,
-			);
-			const clampedEnd = clampedStart + timeSpan;
-
-			viewStartRef.current = clampedStart;
-			viewEndRef.current = clampedEnd;
-			setViewStartTs(clampedStart);
-			setViewEndTs(clampedEnd);
-
-			// --- Vertical scroll pan ---
-			const nextScrollTop = clampScrollTop(scrollTopRef.current - deltaY);
-			scrollTopRef.current = nextScrollTop;
-			setScrollTop(nextScrollTop);
-
-			dragStartRef.current = { x: event.clientX, y: event.clientY };
-		},
-		[
-			canvasRef,
-			traceMetadata,
-			viewStartRef,
-			viewEndRef,
-			setViewStartTs,
-			setViewEndTs,
-			scrollTopRef,
-			setScrollTop,
-			clampScrollTop,
-		],
-	);
-
-	const handleMouseUp = useCallback((): void => {
-		const wasDrag = dragDistanceRef.current > DRAG_THRESHOLD;
-		suppressClickRef.current = wasDrag;
-
-		isDraggingRef.current = false;
-		dragStartRef.current = null;
-		dragDistanceRef.current = 0;
-
-		const canvas = canvasRef.current;
-		if (canvas) {
-			canvas.style.cursor = 'grab';
-		}
-	}, [canvasRef]);
-
-	const handleDragMouseLeave = useCallback((): void => {
-		isDraggingRef.current = false;
-		dragStartRef.current = null;
-		dragDistanceRef.current = 0;
-
-		const canvas = canvasRef.current;
-		if (canvas) {
-			canvas.style.cursor = 'grab';
-		}
-	}, [canvasRef]);
-
-	return {
-		handleMouseDown,
-		handleMouseMove,
-		handleMouseUp,
-		handleDragMouseLeave,
-		suppressClickRef,
-		isDraggingRef,
-	};
-}

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphDraw.ts

@@ -1,222 +0,0 @@
-import React, { RefObject, useCallback, useRef } from 'react';
-import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
-
-import { SpanRect } from '../types';
-import {
-	clamp,
-	drawSpanBar,
-	FlamegraphRowMetrics,
-	getFlamegraphRowMetrics,
-	getSpanColor,
-} from '../utils';
-
-interface UseFlamegraphDrawArgs {
-	canvasRef: RefObject<HTMLCanvasElement>;
-	containerRef: RefObject<HTMLDivElement>;
-	spans: FlamegraphSpan[][];
-	viewStartTs: number;
-	viewEndTs: number;
-	scrollTop: number;
-	rowHeight: number;
-	selectedSpanId: string | undefined;
-	hoveredSpanId: string;
-	isDarkMode: boolean;
-	spanRectsRef?: React.MutableRefObject<SpanRect[]>;
-}
-
-interface UseFlamegraphDrawResult {
-	drawFlamegraph: () => void;
-	spanRectsRef: RefObject<SpanRect[]>;
-}
-
-const OVERSCAN_ROWS = 4;
-
-interface DrawLevelArgs {
-	ctx: CanvasRenderingContext2D;
-	levelSpans: FlamegraphSpan[];
-	levelIndex: number;
-	y: number;
-	viewStartTs: number;
-	timeSpan: number;
-	cssWidth: number;
-	selectedSpanId: string | undefined;
-	hoveredSpanId: string;
-	isDarkMode: boolean;
-	spanRectsArray: SpanRect[];
-	metrics: FlamegraphRowMetrics;
-}
-
-function drawLevel(args: DrawLevelArgs): void {
-	const {
-		ctx,
-		levelSpans,
-		levelIndex,
-		y,
-		viewStartTs,
-		timeSpan,
-		cssWidth,
-		selectedSpanId,
-		hoveredSpanId,
-		isDarkMode,
-		spanRectsArray,
-		metrics,
-	} = args;
-
-	const viewEndTs = viewStartTs + timeSpan;
-
-	for (let i = 0; i < levelSpans.length; i++) {
-		const span = levelSpans[i];
-		const spanStartMs = span.timestamp;
-		const spanEndMs = span.timestamp + span.durationNano / 1e6;
-
-		// Time culling -- skip spans entirely outside the visible time window
-		if (spanEndMs < viewStartTs || spanStartMs > viewEndTs) {
-			continue;
-		}
-
-		const leftOffset = ((spanStartMs - viewStartTs) / timeSpan) * cssWidth;
-		const rightEdge = ((spanEndMs - viewStartTs) / timeSpan) * cssWidth;
-		let width = rightEdge - leftOffset;
-
-		// Clamp to visible x-range
-		if (leftOffset < 0) {
-			width += leftOffset;
-			if (width <= 0) {
-				continue;
-			}
-		}
-		if (rightEdge > cssWidth) {
-			width = cssWidth - Math.max(0, leftOffset);
-			if (width <= 0) {
-				continue;
-			}
-		}
-
-		// Minimum 1px width so tiny spans remain visible
-		width = clamp(width, 1, Infinity);
-
-		const color = getSpanColor({ span, isDarkMode });
-
-		drawSpanBar({
-			ctx,
-			span,
-			x: Math.max(0, leftOffset),
-			y,
-			width,
-			levelIndex,
-			spanRectsArray,
-			color,
-			isDarkMode,
-			metrics,
-			selectedSpanId,
-			hoveredSpanId,
-		});
-	}
-}
-
-export function useFlamegraphDraw(
-	args: UseFlamegraphDrawArgs,
-): UseFlamegraphDrawResult {
-	const {
-		canvasRef,
-		containerRef,
-		spans,
-		viewStartTs,
-		viewEndTs,
-		scrollTop,
-		rowHeight,
-		selectedSpanId,
-		hoveredSpanId,
-		isDarkMode,
-		spanRectsRef: spanRectsRefProp,
-	} = args;
-
-	const spanRectsRefInternal = useRef<SpanRect[]>([]);
-	const spanRectsRef = spanRectsRefProp ?? spanRectsRefInternal;
-
-	const drawFlamegraph = useCallback(() => {
-		const canvas = canvasRef.current;
-		const container = containerRef.current;
-		if (!canvas || !container) {
-			return;
-		}
-
-		const ctx = canvas.getContext('2d');
-		if (!ctx) {
-			return;
-		}
-
-		const dpr = window.devicePixelRatio || 1;
-		ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
-
-		const timeSpan = viewEndTs - viewStartTs;
-		if (timeSpan <= 0) {
-			return;
-		}
-
-		const cssWidth = canvas.width / dpr;
-		const metrics = getFlamegraphRowMetrics(rowHeight);
-
-		// ---- Vertical clipping window ----
-		const viewportHeight = container.clientHeight;
-
-		//starts drawing OVERSCAN_ROWS(4) rows above the visible area.
-		const firstLevel = Math.max(
-			0,
-			Math.floor(scrollTop / metrics.ROW_HEIGHT) - OVERSCAN_ROWS,
-		);
-		// adds 2*OVERSCAN_ROWS extra rows above and below the visible area.
-		const visibleLevelCount =
-			Math.ceil(viewportHeight / metrics.ROW_HEIGHT) + 2 * OVERSCAN_ROWS;
-
-		const lastLevel = Math.min(spans.length - 1, firstLevel + visibleLevelCount);
-
-		ctx.clearRect(0, 0, cssWidth, viewportHeight);
-
-		const spanRectsArray: SpanRect[] = [];
-
-		// ---- Draw only visible levels ----
-		for (let levelIndex = firstLevel; levelIndex <= lastLevel; levelIndex++) {
-			const levelSpans = spans[levelIndex];
-			if (!levelSpans) {
-				continue;
-			}
-
-			drawLevel({
-				ctx,
-				levelSpans,
-				levelIndex,
-				y: levelIndex * metrics.ROW_HEIGHT - scrollTop,
-				viewStartTs,
-				timeSpan,
-				cssWidth,
-				selectedSpanId,
-				hoveredSpanId,
-				isDarkMode,
-				spanRectsArray,
-				metrics,
-			});
-		}
-
-		spanRectsRef.current = spanRectsArray;
-	}, [
-		canvasRef,
-		containerRef,
-		spanRectsRef,
-		spans,
-		viewStartTs,
-		viewEndTs,
-		scrollTop,
-		rowHeight,
-		selectedSpanId,
-		hoveredSpanId,
-		isDarkMode,
-	]);
-
-	// TODO: spanRectsRef is a flat array — hover scans all visible rects O(N).
-	// Upgrade to per-level buckets: spanRects[levelIndex] = [...] so hover can
-	// compute level from mouseY / ROW_HEIGHT and scan only that row.
-	// Further: binary search within a level by x (spans are sorted by start time)
-	// to reduce hover cost from O(N) to O(log N).
-	return { drawFlamegraph, spanRectsRef };
-}

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphHover.ts

@@ -1,214 +0,0 @@
-import {
-	Dispatch,
-	MouseEvent as ReactMouseEvent,
-	MutableRefObject,
-	RefObject,
-	SetStateAction,
-	useCallback,
-	useState,
-} from 'react';
-import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
-
-import { SpanRect } from '../types';
-import { ITraceMetadata } from '../types';
-import { getSpanColor } from '../utils';
-
-function getCanvasPointer(
-	canvas: HTMLCanvasElement,
-	clientX: number,
-	clientY: number,
-): { cssX: number; cssY: number } | null {
-	const rect = canvas.getBoundingClientRect();
-	const dpr = window.devicePixelRatio || 1;
-	const cssWidth = canvas.width / dpr;
-	const cssHeight = canvas.height / dpr;
-	const cssX = (clientX - rect.left) * (cssWidth / rect.width);
-	const cssY = (clientY - rect.top) * (cssHeight / rect.height);
-	return { cssX, cssY };
-}
-
-function findSpanAtPosition(
-	cssX: number,
-	cssY: number,
-	spanRects: SpanRect[],
-): FlamegraphSpan | null {
-	for (let i = spanRects.length - 1; i >= 0; i--) {
-		const r = spanRects[i];
-		if (
-			cssX >= r.x &&
-			cssX <= r.x + r.width &&
-			cssY >= r.y &&
-			cssY <= r.y + r.height
-		) {
-			return r.span;
-		}
-	}
-	return null;
-}
-
-export interface TooltipContent {
-	spanName: string;
-	status: 'ok' | 'warning' | 'error';
-	startMs: number;
-	durationMs: number;
-	clientX: number;
-	clientY: number;
-	spanColor: string;
-}
-
-interface UseFlamegraphHoverArgs {
-	canvasRef: RefObject<HTMLCanvasElement>;
-	spanRectsRef: MutableRefObject<SpanRect[]>;
-	traceMetadata: ITraceMetadata;
-	viewStartTs: number;
-	viewEndTs: number;
-	isDraggingRef: MutableRefObject<boolean>;
-	suppressClickRef: MutableRefObject<boolean>;
-	onSpanClick: (spanId: string) => void;
-	isDarkMode: boolean;
-}
-
-interface UseFlamegraphHoverResult {
-	hoveredSpanId: string | null;
-	setHoveredSpanId: Dispatch<SetStateAction<string | null>>;
-	handleHoverMouseMove: (e: ReactMouseEvent) => void;
-	handleHoverMouseLeave: () => void;
-	handleClick: (e: ReactMouseEvent) => void;
-	tooltipContent: TooltipContent | null;
-}
-
-export function useFlamegraphHover(
-	args: UseFlamegraphHoverArgs,
-): UseFlamegraphHoverResult {
-	const {
-		canvasRef,
-		spanRectsRef,
-		traceMetadata,
-		viewStartTs,
-		viewEndTs,
-		isDraggingRef,
-		suppressClickRef,
-		onSpanClick,
-		isDarkMode,
-	} = args;
-
-	const [hoveredSpanId, setHoveredSpanId] = useState<string | null>(null);
-	const [tooltipContent, setTooltipContent] = useState<TooltipContent | null>(
-		null,
-	);
-
-	const isZoomed =
-		viewStartTs !== traceMetadata.startTime ||
-		viewEndTs !== traceMetadata.endTime;
-
-	const updateCursor = useCallback(
-		(canvas: HTMLCanvasElement, span: FlamegraphSpan | null): void => {
-			if (span) {
-				canvas.style.cursor = 'pointer';
-			} else if (isZoomed) {
-				canvas.style.cursor = 'grab';
-			} else {
-				canvas.style.cursor = 'default';
-			}
-		},
-		[isZoomed],
-	);
-
-	const handleHoverMouseMove = useCallback(
-		(e: ReactMouseEvent): void => {
-			if (isDraggingRef.current) {
-				return;
-			}
-
-			const canvas = canvasRef.current;
-			if (!canvas) {
-				return;
-			}
-
-			const pointer = getCanvasPointer(canvas, e.clientX, e.clientY);
-			if (!pointer) {
-				return;
-			}
-
-			const span = findSpanAtPosition(
-				pointer.cssX,
-				pointer.cssY,
-				spanRectsRef.current,
-			);
-
-			if (span) {
-				setHoveredSpanId(span.spanId);
-				setTooltipContent({
-					spanName: span.name || 'unknown',
-					status: span.hasError ? 'error' : 'ok',
-					startMs: span.timestamp - traceMetadata.startTime,
-					durationMs: span.durationNano / 1e6,
-					clientX: e.clientX,
-					clientY: e.clientY,
-					spanColor: getSpanColor({ span, isDarkMode }),
-				});
-				updateCursor(canvas, span);
-			} else {
-				setHoveredSpanId(null);
-				setTooltipContent(null);
-				updateCursor(canvas, null);
-			}
-		},
-		[
-			canvasRef,
-			spanRectsRef,
-			traceMetadata.startTime,
-			isDraggingRef,
-			updateCursor,
-			isDarkMode,
-		],
-	);
-
-	const handleHoverMouseLeave = useCallback((): void => {
-		setHoveredSpanId(null);
-		setTooltipContent(null);
-
-		const canvas = canvasRef.current;
-		if (canvas) {
-			updateCursor(canvas, null);
-		}
-	}, [canvasRef, updateCursor]);
-
-	const handleClick = useCallback(
-		(e: ReactMouseEvent): void => {
-			if (suppressClickRef.current) {
-				return;
-			}
-
-			const canvas = canvasRef.current;
-			if (!canvas) {
-				return;
-			}
-
-			const pointer = getCanvasPointer(canvas, e.clientX, e.clientY);
-			if (!pointer) {
-				return;
-			}
-
-			const span = findSpanAtPosition(
-				pointer.cssX,
-				pointer.cssY,
-				spanRectsRef.current,
-			);
-
-			if (span) {
-				onSpanClick(span.spanId);
-			}
-		},
-		[canvasRef, spanRectsRef, suppressClickRef, onSpanClick],
-	);
-
-	return {
-		hoveredSpanId,
-		setHoveredSpanId,
-		handleHoverMouseMove,
-		handleHoverMouseLeave,
-		handleClick,
-		tooltipContent,
-	};
-}

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphZoom.ts

@@ -1,224 +0,0 @@
-import {
-	Dispatch,
-	MutableRefObject,
-	RefObject,
-	SetStateAction,
-	useCallback,
-	useEffect,
-	useRef,
-} from 'react';
-
-import {
-	DEFAULT_ROW_HEIGHT,
-	MAX_ROW_HEIGHT,
-	MIN_ROW_HEIGHT,
-	MIN_VISIBLE_SPAN_MS,
-	PINCH_ZOOM_INTENSITY_H,
-	PINCH_ZOOM_INTENSITY_V,
-	SCROLL_ZOOM_INTENSITY_H,
-	SCROLL_ZOOM_INTENSITY_V,
-} from '../constants';
-import { ITraceMetadata } from '../types';
-import { clamp } from '../utils';
-
-interface UseFlamegraphZoomArgs {
-	canvasRef: RefObject<HTMLCanvasElement>;
-	traceMetadata: ITraceMetadata;
-	viewStartRef: MutableRefObject<number>;
-	viewEndRef: MutableRefObject<number>;
-	rowHeightRef: MutableRefObject<number>;
-	setViewStartTs: Dispatch<SetStateAction<number>>;
-	setViewEndTs: Dispatch<SetStateAction<number>>;
-	setRowHeight: Dispatch<SetStateAction<number>>;
-}
-
-interface UseFlamegraphZoomResult {
-	handleResetZoom: () => void;
-	isOverFlamegraphRef: MutableRefObject<boolean>;
-}
-
-function getCanvasPointer(
-	canvasRef: RefObject<HTMLCanvasElement>,
-	clientX: number,
-): { cssX: number; cssWidth: number } | null {
-	const canvas = canvasRef.current;
-	if (!canvas) {
-		return null;
-	}
-
-	const rect = canvas.getBoundingClientRect();
-	const dpr = window.devicePixelRatio || 1;
-	const cssWidth = canvas.width / dpr;
-	const cssX = (clientX - rect.left) * (cssWidth / rect.width);
-
-	return { cssX, cssWidth };
-}
-
-export function useFlamegraphZoom(
-	args: UseFlamegraphZoomArgs,
-): UseFlamegraphZoomResult {
-	const {
-		canvasRef,
-		traceMetadata,
-		viewStartRef,
-		viewEndRef,
-		rowHeightRef,
-		setViewStartTs,
-		setViewEndTs,
-		setRowHeight,
-	} = args;
-
-	const isOverFlamegraphRef = useRef(false);
-	const wheelDeltaRef = useRef(0);
-	const rafRef = useRef<number | null>(null);
-	const lastCursorXRef = useRef(0);
-	const lastCssWidthRef = useRef(1);
-	const lastIsPinchRef = useRef(false);
-	const lastWheelClientXRef = useRef<number | null>(null);
-
-	// Prevent browser zoom when pinching over the flamegraph
-	useEffect(() => {
-		const onWheel = (e: WheelEvent): void => {
-			if (isOverFlamegraphRef.current && e.ctrlKey) {
-				e.preventDefault();
-			}
-		};
-
-		window.addEventListener('wheel', onWheel, { passive: false, capture: true });
-
-		return (): void => {
-			window.removeEventListener('wheel', onWheel, {
-				capture: true,
-			} as EventListenerOptions);
-		};
-	}, []);
-
-	const applyWheelZoom = useCallback(() => {
-		rafRef.current = null;
-
-		const cssWidth = lastCssWidthRef.current || 1;
-		const cursorX = lastCursorXRef.current;
-		const fullSpanMs = traceMetadata.endTime - traceMetadata.startTime;
-
-		const oldStart = viewStartRef.current;
-		const oldEnd = viewEndRef.current;
-		const oldSpan = oldEnd - oldStart;
-
-		const deltaY = wheelDeltaRef.current;
-		wheelDeltaRef.current = 0;
-		if (deltaY === 0) {
-			return;
-		}
-
-		const zoomH = lastIsPinchRef.current
-			? PINCH_ZOOM_INTENSITY_H
-			: SCROLL_ZOOM_INTENSITY_H;
-		const zoomV = lastIsPinchRef.current
-			? PINCH_ZOOM_INTENSITY_V
-			: SCROLL_ZOOM_INTENSITY_V;
-
-		const factorH = Math.exp(deltaY * zoomH);
-		const factorV = Math.exp(deltaY * zoomV);
-
-		// --- Horizontal zoom ---
-		const desiredSpan = oldSpan * factorH;
-		const minSpanMs = Math.max(
-			MIN_VISIBLE_SPAN_MS,
-			oldSpan / Math.max(cssWidth, 1),
-		);
-		const clampedSpan = clamp(desiredSpan, minSpanMs, fullSpanMs);
-
-		const cursorRatio = clamp(cursorX / cssWidth, 0, 1);
-		const anchorTs = oldStart + cursorRatio * oldSpan;
-
-		let nextStart = anchorTs - cursorRatio * clampedSpan;
-		nextStart = clamp(
-			nextStart,
-			traceMetadata.startTime,
-			traceMetadata.endTime - clampedSpan,
-		);
-		const nextEnd = nextStart + clampedSpan;
-
-		// --- Vertical zoom (row height) ---
-		const desiredRow = rowHeightRef.current * (1 / factorV);
-		const nextRow = clamp(desiredRow, MIN_ROW_HEIGHT, MAX_ROW_HEIGHT);
-
-		// Write refs immediately so rapid wheel events read fresh values
-		viewStartRef.current = nextStart;
-		viewEndRef.current = nextEnd;
-		rowHeightRef.current = nextRow;
-
-		setViewStartTs(nextStart);
-		setViewEndTs(nextEnd);
-		setRowHeight(nextRow);
-	}, [
-		traceMetadata,
-		viewStartRef,
-		viewEndRef,
-		rowHeightRef,
-		setViewStartTs,
-		setViewEndTs,
-		setRowHeight,
-	]);
-
-	// Native wheel listener on the canvas (passive: false for reliable preventDefault)
-	useEffect(() => {
-		const canvas = canvasRef.current;
-		if (!canvas) {
-			return (): void => {};
-		}
-
-		const onWheel = (e: WheelEvent): void => {
-			e.preventDefault();
-
-			const pointer = getCanvasPointer(canvasRef, e.clientX);
-			if (!pointer) {
-				return;
-			}
-
-			// Flush accumulated delta if cursor moved significantly
-			if (lastWheelClientXRef.current !== null) {
-				const moved = Math.abs(e.clientX - lastWheelClientXRef.current);
-				if (moved > 6) {
-					wheelDeltaRef.current = 0;
-				}
-			}
-			lastWheelClientXRef.current = e.clientX;
-
-			lastIsPinchRef.current = e.ctrlKey;
-			lastCssWidthRef.current = pointer.cssWidth;
-			lastCursorXRef.current = pointer.cssX;
-			wheelDeltaRef.current += e.deltaY;
-
-			if (rafRef.current == null) {
-				rafRef.current = requestAnimationFrame(applyWheelZoom);
-			}
-		};
-
-		canvas.addEventListener('wheel', onWheel, { passive: false });
-
-		return (): void => {
-			canvas.removeEventListener('wheel', onWheel);
-		};
-	}, [canvasRef, applyWheelZoom]);
-
-	const handleResetZoom = useCallback(() => {
-		viewStartRef.current = traceMetadata.startTime;
-		viewEndRef.current = traceMetadata.endTime;
-		rowHeightRef.current = DEFAULT_ROW_HEIGHT;
-
-		setViewStartTs(traceMetadata.startTime);
-		setViewEndTs(traceMetadata.endTime);
-		setRowHeight(DEFAULT_ROW_HEIGHT);
-	}, [
-		traceMetadata,
-		viewStartRef,
-		viewEndRef,
-		rowHeightRef,
-		setViewStartTs,
-		setViewEndTs,
-		setRowHeight,
-	]);
-
-	return { handleResetZoom, isOverFlamegraphRef };
-}

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useScrollToSpan.ts

@@ -1,118 +0,0 @@
-import {
-	Dispatch,
-	MutableRefObject,
-	RefObject,
-	SetStateAction,
-	useEffect,
-} from 'react';
-import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
-
-import { MIN_VISIBLE_SPAN_MS } from '../constants';
-import { ITraceMetadata } from '../types';
-import { clamp, findSpanById, getFlamegraphRowMetrics } from '../utils';
-
-interface UseScrollToSpanArgs {
-	firstSpanAtFetchLevel: string;
-	spans: FlamegraphSpan[][];
-	traceMetadata: ITraceMetadata;
-	containerRef: RefObject<HTMLDivElement>;
-	viewStartRef: MutableRefObject<number>;
-	viewEndRef: MutableRefObject<number>;
-	scrollTopRef: MutableRefObject<number>;
-	rowHeight: number;
-	setViewStartTs: Dispatch<SetStateAction<number>>;
-	setViewEndTs: Dispatch<SetStateAction<number>>;
-	setScrollTop: Dispatch<SetStateAction<number>>;
-}
-
-/**
- * When firstSpanAtFetchLevel (from URL spanId) changes, scroll and zoom the
- * flamegraph so the selected span is centered in view.
- */
-export function useScrollToSpan(args: UseScrollToSpanArgs): void {
-	const {
-		firstSpanAtFetchLevel,
-		spans,
-		traceMetadata,
-		containerRef,
-		viewStartRef,
-		viewEndRef,
-		scrollTopRef,
-		rowHeight,
-		setViewStartTs,
-		setViewEndTs,
-		setScrollTop,
-	} = args;
-
-	useEffect(() => {
-		if (!firstSpanAtFetchLevel || spans.length === 0) {
-			return;
-		}
-
-		const result = findSpanById(spans, firstSpanAtFetchLevel);
-		if (!result) {
-			return;
-		}
-
-		const { span, levelIndex } = result;
-		const container = containerRef.current;
-		if (!container) {
-			return;
-		}
-
-		const metrics = getFlamegraphRowMetrics(rowHeight);
-		const viewportHeight = container.clientHeight;
-		const totalHeight = spans.length * metrics.ROW_HEIGHT;
-		const maxScroll = Math.max(0, totalHeight - viewportHeight);
-
-		// Vertical: center the span's row in the viewport
-		const targetScrollTop = clamp(
-			levelIndex * metrics.ROW_HEIGHT -
-				viewportHeight / 2 +
-				metrics.ROW_HEIGHT / 2,
-			0,
-			maxScroll,
-		);
-
-		// Horizontal: zoom to span with padding (2x span duration), center it
-		const spanStartMs = span.timestamp;
-		const spanEndMs = span.timestamp + span.durationNano / 1e6;
-		const spanDurationMs = spanEndMs - spanStartMs;
-		const spanCenterMs = (spanStartMs + spanEndMs) / 2;
-
-		const visibleWindowMs = Math.max(spanDurationMs * 2, MIN_VISIBLE_SPAN_MS);
-		const fullSpanMs = traceMetadata.endTime - traceMetadata.startTime;
-		const clampedWindow = clamp(visibleWindowMs, MIN_VISIBLE_SPAN_MS, fullSpanMs);
-
-		let targetViewStart = spanCenterMs - clampedWindow / 2;
-		let targetViewEnd = spanCenterMs + clampedWindow / 2;
-
-		targetViewStart = clamp(
-			targetViewStart,
-			traceMetadata.startTime,
-			traceMetadata.endTime - clampedWindow,
-		);
-		targetViewEnd = targetViewStart + clampedWindow;
-
-		// Apply immediately (instant jump)
-		viewStartRef.current = targetViewStart;
-		viewEndRef.current = targetViewEnd;
-		scrollTopRef.current = targetScrollTop;
-
-		setViewStartTs(targetViewStart);
-		setViewEndTs(targetViewEnd);
-		setScrollTop(targetScrollTop);
-	}, [
-		firstSpanAtFetchLevel,
-		spans,
-		traceMetadata,
-		containerRef,
-		viewStartRef,
-		viewEndRef,
-		scrollTopRef,
-		rowHeight,
-		setViewStartTs,
-		setViewEndTs,
-		setScrollTop,
-	]);
-}

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/types.ts

@@ -1,24 +0,0 @@
-import { Dispatch, SetStateAction } from 'react';
-import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
-
-export interface ITraceMetadata {
-	startTime: number;
-	endTime: number;
-}
-
-export interface FlamegraphCanvasProps {
-	spans: FlamegraphSpan[][];
-	firstSpanAtFetchLevel: string;
-	setFirstSpanAtFetchLevel: Dispatch<SetStateAction<string>>;
-	onSpanClick: (spanId: string) => void;
-	traceMetadata: ITraceMetadata;
-}
-
-export interface SpanRect {
-	span: FlamegraphSpan;
-	x: number;
-	y: number;
-	width: number;
-	height: number;
-	level: number;
-}

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/utils.ts

@@ -1,355 +0,0 @@
-import { themeColors } from 'constants/theme';
-import { convertTimeToRelevantUnit } from 'container/TraceDetail/utils';
-import { generateColor } from 'lib/uPlotLib/utils/generateColor';
-import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
-
-import {
-	DASHED_BORDER_LINE_DASH,
-	EVENT_DOT_SIZE_RATIO,
-	LABEL_FONT,
-	LABEL_PADDING_X,
-	MAX_EVENT_DOT_SIZE,
-	MAX_SPAN_BAR_HEIGHT,
-	MIN_EVENT_DOT_SIZE,
-	MIN_SPAN_BAR_HEIGHT,
-	MIN_WIDTH_FOR_NAME,
-	MIN_WIDTH_FOR_NAME_AND_DURATION,
-	SPAN_BAR_HEIGHT_RATIO,
-} from './constants';
-import { SpanRect } from './types';
-
-export function clamp(v: number, min: number, max: number): number {
-	return Math.max(min, Math.min(max, v));
-}
-
-/** Create diagonal stripe pattern for selected/hovered span (repeating-linear-gradient -45deg style). */
-function createStripePattern(
-	ctx: CanvasRenderingContext2D,
-	color: string,
-): CanvasPattern | null {
-	const size = 20;
-	const patternCanvas = document.createElement('canvas');
-	patternCanvas.width = size;
-	patternCanvas.height = size;
-	const pCtx = patternCanvas.getContext('2d');
-	if (!pCtx) {
-		return null;
-	}
-
-	// Diagonal stripes at -45deg: 10px transparent, 10px colored (0.04 opacity), repeat
-	pCtx.globalAlpha = 0.04;
-	pCtx.strokeStyle = color;
-	pCtx.lineWidth = 10;
-	pCtx.lineCap = 'butt';
-	for (let i = -size; i < size * 2; i += size) {
-		pCtx.beginPath();
-		pCtx.moveTo(i + size, 0);
-		pCtx.lineTo(i, size);
-		pCtx.stroke();
-	}
-	pCtx.globalAlpha = 1;
-
-	return ctx.createPattern(patternCanvas, 'repeat');
-}
-
-export function findSpanById(
-	spans: FlamegraphSpan[][],
-	spanId: string,
-): { span: FlamegraphSpan; levelIndex: number } | null {
-	for (let levelIndex = 0; levelIndex < spans.length; levelIndex++) {
-		const span = spans[levelIndex]?.find((s) => s.spanId === spanId);
-		if (span) {
-			return { span, levelIndex };
-		}
-	}
-	return null;
-}
-
-export interface FlamegraphRowMetrics {
-	ROW_HEIGHT: number;
-	SPAN_BAR_HEIGHT: number;
-	SPAN_BAR_Y_OFFSET: number;
-	EVENT_DOT_SIZE: number;
-}
-
-export function getFlamegraphRowMetrics(
-	rowHeight: number,
-): FlamegraphRowMetrics {
-	const spanBarHeight = clamp(
-		Math.round(rowHeight * SPAN_BAR_HEIGHT_RATIO),
-		MIN_SPAN_BAR_HEIGHT,
-		MAX_SPAN_BAR_HEIGHT,
-	);
-	const spanBarYOffset = Math.floor((rowHeight - spanBarHeight) / 2);
-	const eventDotSize = clamp(
-		Math.round(spanBarHeight * EVENT_DOT_SIZE_RATIO),
-		MIN_EVENT_DOT_SIZE,
-		MAX_EVENT_DOT_SIZE,
-	);
-
-	return {
-		ROW_HEIGHT: rowHeight,
-		SPAN_BAR_HEIGHT: spanBarHeight,
-		SPAN_BAR_Y_OFFSET: spanBarYOffset,
-		EVENT_DOT_SIZE: eventDotSize,
-	};
-}
-
-interface GetSpanColorArgs {
-	span: FlamegraphSpan;
-	isDarkMode: boolean;
-}
-
-export function getSpanColor(args: GetSpanColorArgs): string {
-	const { span, isDarkMode } = args;
-	let color = generateColor(span.serviceName, themeColors.traceDetailColorsV3);
-
-	if (span.hasError) {
-		color = isDarkMode ? 'rgb(239, 68, 68)' : 'rgb(220, 38, 38)';
-	}
-
-	return color;
-}
-
-interface DrawEventDotArgs {
-	ctx: CanvasRenderingContext2D;
-	x: number;
-	y: number;
-	isError: boolean;
-	isDarkMode: boolean;
-	eventDotSize: number;
-}
-
-export function drawEventDot(args: DrawEventDotArgs): void {
-	const { ctx, x, y, isError, isDarkMode, eventDotSize } = args;
-
-	ctx.save();
-	ctx.translate(x, y);
-	ctx.rotate(Math.PI / 4);
-
-	if (isError) {
-		ctx.fillStyle = isDarkMode ? 'rgb(239, 68, 68)' : 'rgb(220, 38, 38)';
-		ctx.strokeStyle = isDarkMode ? 'rgb(185, 28, 28)' : 'rgb(153, 27, 27)';
-	} else {
-		ctx.fillStyle = isDarkMode ? 'rgb(14, 165, 233)' : 'rgb(6, 182, 212)';
-		ctx.strokeStyle = isDarkMode ? 'rgb(2, 132, 199)' : 'rgb(8, 145, 178)';
-	}
-
-	ctx.lineWidth = 1;
-	const half = eventDotSize / 2;
-	ctx.fillRect(-half, -half, eventDotSize, eventDotSize);
-	ctx.strokeRect(-half, -half, eventDotSize, eventDotSize);
-	ctx.restore();
-}
-
-interface DrawSpanBarArgs {
-	ctx: CanvasRenderingContext2D;
-	span: FlamegraphSpan;
-	x: number;
-	y: number;
-	width: number;
-	levelIndex: number;
-	spanRectsArray: SpanRect[];
-	color: string;
-	isDarkMode: boolean;
-	metrics: FlamegraphRowMetrics;
-	selectedSpanId?: string | null;
-	hoveredSpanId?: string | null;
-}
-
-export function drawSpanBar(args: DrawSpanBarArgs): void {
-	const {
-		ctx,
-		span,
-		x,
-		y,
-		width,
-		levelIndex,
-		spanRectsArray,
-		color,
-		isDarkMode,
-		metrics,
-		selectedSpanId,
-		hoveredSpanId,
-	} = args;
-
-	const spanY = y + metrics.SPAN_BAR_Y_OFFSET;
-	const isSelected = selectedSpanId === span.spanId;
-	const isHovered = hoveredSpanId === span.spanId;
-	const isSelectedOrHovered = isSelected || isHovered;
-
-	ctx.beginPath();
-	ctx.roundRect(x, spanY, width, metrics.SPAN_BAR_HEIGHT, 2);
-
-	if (isSelectedOrHovered) {
-		// Diagonal stripe pattern (repeating-linear-gradient -45deg style) + border in span color
-		const pattern = createStripePattern(ctx, color);
-		if (pattern) {
-			ctx.fillStyle = pattern;
-			ctx.fill();
-		}
-		if (isSelected) {
-			ctx.setLineDash(DASHED_BORDER_LINE_DASH);
-		}
-		ctx.strokeStyle = color;
-		ctx.lineWidth = isSelected ? 2 : 1;
-		ctx.stroke();
-		if (isSelected) {
-			ctx.setLineDash([]);
-		}
-	} else {
-		ctx.fillStyle = color;
-		ctx.fill();
-	}
-
-	spanRectsArray.push({
-		span,
-		x,
-		y: spanY,
-		width,
-		height: metrics.SPAN_BAR_HEIGHT,
-		level: levelIndex,
-	});
-
-	span.event?.forEach((event) => {
-		const spanDurationMs = span.durationNano / 1e6;
-		if (spanDurationMs <= 0) {
-			return;
-		}
-
-		const eventTimeMs = event.timeUnixNano / 1e6;
-		const eventOffsetPercent =
-			((eventTimeMs - span.timestamp) / spanDurationMs) * 100;
-		const clampedOffset = clamp(eventOffsetPercent, 1, 99);
-		const eventX = x + (clampedOffset / 100) * width;
-		const eventY = spanY + metrics.SPAN_BAR_HEIGHT / 2;
-
-		drawEventDot({
-			ctx,
-			x: eventX,
-			y: eventY,
-			isError: event.isError,
-			isDarkMode,
-			eventDotSize: metrics.EVENT_DOT_SIZE,
-		});
-	});
-
-	drawSpanLabel({
-		ctx,
-		span,
-		x,
-		y: spanY,
-		width,
-		color,
-		isSelectedOrHovered,
-		isDarkMode,
-		spanBarHeight: metrics.SPAN_BAR_HEIGHT,
-	});
-}
-
-export function formatDuration(durationNano: number): string {
-	const durationMs = durationNano / 1e6;
-	const { time, timeUnitName } = convertTimeToRelevantUnit(durationMs);
-	return `${parseFloat(time.toFixed(2))}${timeUnitName}`;
-}
-
-interface DrawSpanLabelArgs {
-	ctx: CanvasRenderingContext2D;
-	span: FlamegraphSpan;
-	x: number;
-	y: number;
-	width: number;
-	color: string;
-	isSelectedOrHovered: boolean;
-	isDarkMode: boolean;
-	spanBarHeight: number;
-}
-
-function drawSpanLabel(args: DrawSpanLabelArgs): void {
-	const {
-		ctx,
-		span,
-		x,
-		y,
-		width,
-		color,
-		isSelectedOrHovered,
-		isDarkMode,
-		spanBarHeight,
-	} = args;
-
-	if (width < MIN_WIDTH_FOR_NAME) {
-		return;
-	}
-
-	const name = span.name;
-
-	ctx.save();
-
-	// Clip text to span bar bounds
-	ctx.beginPath();
-	ctx.rect(x, y, width, spanBarHeight);
-	ctx.clip();
-
-	ctx.font = LABEL_FONT;
-	ctx.fillStyle = isSelectedOrHovered
-		? color
-		: isDarkMode
-		? 'rgba(255, 255, 255, 0.9)'
-		: 'rgba(0, 0, 0, 0.9)';
-	ctx.textBaseline = 'middle';
-
-	const textY = y + spanBarHeight / 2;
-	const leftX = x + LABEL_PADDING_X;
-	const rightX = x + width - LABEL_PADDING_X;
-	const availableWidth = width - LABEL_PADDING_X * 2;
-
-	if (width >= MIN_WIDTH_FOR_NAME_AND_DURATION) {
-		const duration = formatDuration(span.durationNano);
-		const durationWidth = ctx.measureText(duration).width;
-		const minGap = 6;
-		const nameSpace = availableWidth - durationWidth - minGap;
-
-		// Duration right-aligned
-		ctx.textAlign = 'right';
-		ctx.fillText(duration, rightX, textY);
-
-		// Name left-aligned, truncated to fit remaining space
-		if (nameSpace > 20) {
-			ctx.textAlign = 'left';
-			ctx.fillText(truncateText(ctx, name, nameSpace), leftX, textY);
-		}
-	} else {
-		// Name only, truncated to fit
-		ctx.textAlign = 'left';
-		ctx.fillText(truncateText(ctx, name, availableWidth), leftX, textY);
-	}
-
-	ctx.restore();
-}
-
-function truncateText(
-	ctx: CanvasRenderingContext2D,
-	text: string,
-	maxWidth: number,
-): string {
-	const ellipsis = '...';
-	const ellipsisWidth = ctx.measureText(ellipsis).width;
-
-	if (ctx.measureText(text).width <= maxWidth) {
-		return text;
-	}
-
-	let lo = 0;
-	let hi = text.length;
-	while (lo < hi) {
-		const mid = Math.ceil((lo + hi) / 2);
-		if (ctx.measureText(text.slice(0, mid)).width + ellipsisWidth <= maxWidth) {
-			lo = mid;
-		} else {
-			hi = mid - 1;
-		}
-	}
-
-	return lo > 0 ? `${text.slice(0, lo)}${ellipsis}` : ellipsis;
-}

frontend/src/pages/TraceDetailsV3/index.tsx

@@ -1,37 +0,0 @@
-import {
-	ResizableHandle,
-	ResizablePanel,
-	ResizablePanelGroup,
-} from '@signozhq/resizable';
-
-import TraceDetailsHeader from './TraceDetailsHeader/TraceDetailsHeader';
-import TraceFlamegraph from './TraceFlamegraph/TraceFlamegraph';
-
-function TraceDetailsV3(): JSX.Element {
-	return (
-		<div
-			style={{
-				height: 'calc(100vh - 90px)',
-				display: 'flex',
-				flexDirection: 'column',
-			}}
-		>
-			<TraceDetailsHeader />
-			<ResizablePanelGroup
-				direction="vertical"
-				autoSaveId="trace-details-v3-layout"
-				style={{ flex: 1 }}
-			>
-				<ResizablePanel defaultSize={40} minSize={20} maxSize={80}>
-					<TraceFlamegraph />
-				</ResizablePanel>
-				<ResizableHandle withHandle />
-				<ResizablePanel defaultSize={60} minSize={20}>
-					<div />
-				</ResizablePanel>
-			</ResizablePanelGroup>
-		</div>
-	);
-}
-
-export default TraceDetailsV3;

frontend/src/utils/metricsTimeStorageUtils.ts

@@ -0,0 +1,28 @@
+import getLocalStorageKey from 'api/browser/localstorage/get';
+import setLocalStorageKey from 'api/browser/localstorage/set';
+import { LOCALSTORAGE } from 'constants/localStorage';
+
+/**
+ * Updates the stored time duration for a route in localStorage.
+ * Used by both DateTimeSelectionV2 (manual time pick) and useZoomOut (zoom out button).
+ *
+ * @param pathname - The route path (e.g. /infrastructure-monitoring/hosts)
+ * @param value - The time value to store (preset string like '1w' or JSON string for custom range)
+ */
+export function persistTimeDurationForRoute(
+	pathname: string,
+	value: string,
+): void {
+	const preRoutes = getLocalStorageKey(LOCALSTORAGE.METRICS_TIME_IN_DURATION);
+	let preRoutesObject: Record<string, string> = {};
+	try {
+		preRoutesObject = preRoutes ? JSON.parse(preRoutes) : {};
+	} catch {
+		preRoutesObject = {};
+	}
+	const preRoute = { ...preRoutesObject, [pathname]: value };
+	setLocalStorageKey(
+		LOCALSTORAGE.METRICS_TIME_IN_DURATION,
+		JSON.stringify(preRoute),
+	);
+}