From 99dbeabcaf2725474fab9067d7f2ade233c24391 Mon Sep 17 00:00:00 2001
From: netil <netil@AD02298065.local>
Date: Tue, 19 Nov 2024 18:51:20 +0900
Subject: [PATCH] fix(tooltip): Fix tooltip position on viewBox resizing

- Fix coordinate value translating SVG to DOM
- Adjust tooltip position by its type

Ref #3917
---
 src/ChartInternal/data/data.ts         |  7 +++--
 src/ChartInternal/internals/tooltip.ts | 40 ++++++++++++++++----------
 src/module/util.ts                     | 12 ++++++--
 test/interactions/viewbox-spec.ts      |  6 ++--
 4 files changed, 42 insertions(+), 23 deletions(-)

diff --git a/src/ChartInternal/data/data.ts b/src/ChartInternal/data/data.ts
index b3d8a993c..146148c5b 100644
--- a/src/ChartInternal/data/data.ts
+++ b/src/ChartInternal/data/data.ts
@@ -730,14 +730,15 @@ export default {
 				event.changedTouches[0] :
 				event;
 
-			let point = isRotated ?
-				e.clientY + scrollPos.y - rect.top :
-				e.clientX + scrollPos.x - rect.left;
+			let point = isRotated ? e.clientY + scrollPos.y : e.clientX + scrollPos.x;
 
 			if (hasViewBox($el.svg)) {
 				const pos = [point, 0];
+
 				isRotated && pos.reverse();
 				point = getTransformCTM($el.svg.node(), ...pos)[isRotated ? "y" : "x"];
+			} else {
+				point -= isRotated ? rect.top : rect.left;
 			}
 
 			index = findIndex(
diff --git a/src/ChartInternal/internals/tooltip.ts b/src/ChartInternal/internals/tooltip.ts
index 60700f4b0..2cb487b22 100644
--- a/src/ChartInternal/internals/tooltip.ts
+++ b/src/ChartInternal/internals/tooltip.ts
@@ -362,16 +362,21 @@ export default {
 		}
 	},
 
+	/**
+	 * Get tooltip position when svg has vieBox attribute
+	 * @param {number} tWidth Tooltip width value
+	 * @param {number} tHeight Tooltip height value
+	 * @param {object} currPos Current event position value from SVG coordinate
+	 * @returns {object} top, left value
+	 */
 	getTooltipPositionViewBox(tWidth: number, tHeight: number,
 		currPos: {[key: string]: number}): {top: number, left: number} {
 		const $$ = this;
-		const {$el: {eventRect, main}, config, state} = $$;
+		const {$el: {eventRect, svg}, config, state} = $$;
 
 		const isRotated = config.axis_rotated;
-		const hasArcType = $$.hasArcType(undefined, ["radar"]) || state.hasFunnel ||
-			state.hasTreemap;
-		const target = (state.hasRadar ? main : eventRect)?.node() ?? state.event.target;
-		const size = 38; // getTransformCTM($el.svg.node(), 10, 0, false).x;
+		const hasArcType = $$.hasArcType() || state.hasFunnel || state.hasTreemap;
+		const target = (hasArcType ? svg : eventRect)?.node() ?? state.event.target;
 
 		let {x, y} = currPos;
 
@@ -380,25 +385,30 @@ export default {
 			y = isRotated ? currPos.xAxis : y;
 		}
 
-		// currPos는 SVG 좌표계 기준으로 전달됨
+		// currPos value based on SVG coordinate
 		const ctm = getTransformCTM(target, x, y, false);
+		const rect = target.getBoundingClientRect();
+		const size = getTransformCTM(target, 20, 0, false).x;
 
 		let top = ctm.y;
-		let left = ctm.x + size;
+		let left = ctm.x + (tWidth / 2) + size;
 
 		if (hasArcType) {
-			top += tHeight;
-			left -= size; // (tWidth / 2);
+			if (state.hasFunnel || state.hasTreemap || state.hasRadar) {
+				left -= (tWidth / 2) + size;
+				top += tHeight;
+			} else {
+				top += rect.height / 2;
+				left += (rect.width / 2) - (tWidth - size);
+			}
 		}
 
-		const rect = (hasArcType ? main.node() : target).getBoundingClientRect();
-
-		if (left + tWidth > rect.right) {
-			left = rect.right - tWidth - size;
+		if (left + tWidth > rect.width) {
+			left = rect.width - tWidth - size;
 		}
 
-		if (top + tHeight > rect.bottom) {
-			top -= tHeight + size;
+		if (top + tHeight > rect.height) {
+			top -= tHeight * 2;
 		}
 
 		return {
diff --git a/src/module/util.ts b/src/module/util.ts
index 4df9a0ec0..cd6ff7399 100644
--- a/src/module/util.ts
+++ b/src/module/util.ts
@@ -551,10 +551,18 @@ function getScrollPosition(node: HTMLElement) {
 function getTransformCTM(node: SVGGraphicsElement, x = 0, y = 0, inverse = true): DOMPoint {
 	const point = new DOMPoint(x, y);
 	const screen = <DOMMatrix>node.getScreenCTM();
-
-	return point.matrixTransform(
+	const res = point.matrixTransform(
 		inverse ? screen?.inverse() : screen
 	);
+
+	if (inverse === false) {
+		const rect = node.getBoundingClientRect();
+
+		res.x -= rect.x;
+		res.y -= rect.y;
+	}
+
+	return res;
 }
 
 /**
diff --git a/test/interactions/viewbox-spec.ts b/test/interactions/viewbox-spec.ts
index d21d3d2fb..0501a728c 100644
--- a/test/interactions/viewbox-spec.ts
+++ b/test/interactions/viewbox-spec.ts
@@ -115,7 +115,7 @@ describe("viewBox", function() {
 		it("should show tooltip on viewBox scale", () => {
 			const {internal: {$el: {eventRect}}} = chart;
 
-			[100, 150, 200, 270, 350, 450].forEach(x => {
+			[50, 130, 200, 270, 350, 450].forEach(x => {
 				fireEvent(eventRect.node(), "mousemove", {
 					clientX: x,
 					clientY: 50
@@ -156,8 +156,8 @@ describe("viewBox", function() {
 					"value": "data1",
 				  },
 				  {
-					"left": 303.112,
-					"top": 117.552,
+					"left": 445.297,
+					"top": 213.328,
 					"value": "data2",
 				  }
 			];