fix: Fixed tooltip for Mobile Area Charts

app/charts/area/areas-state.tsx

@@ -1,10 +1,10 @@
 import { extent, group, rollup, sum } from "d3-array";
 import {
   ScaleLinear,
-  ScaleOrdinal,
-  ScaleTime,
   scaleLinear,
+  ScaleOrdinal,
   scaleOrdinal,
+  ScaleTime,
   scaleTime,
 } from "d3-scale";
 import { schemeCategory10 } from "d3-scale-chromatic";
@@ -40,7 +40,10 @@ import {
   InteractiveXTimeRangeState,
 } from "@/charts/shared/chart-state";
 import { TooltipInfo } from "@/charts/shared/interaction/tooltip";
-import { getCenteredTooltipPlacement } from "@/charts/shared/interaction/tooltip-box";
+import {
+  getCenteredTooltipPlacement,
+  TooltipPlacement,
+} from "@/charts/shared/interaction/tooltip-box";
 import {
   getStackedTooltipValueFormatter,
   getStackedYScale,
@@ -58,6 +61,7 @@ import {
   getSortingOrders,
   makeDimensionValueSorters,
 } from "@/utils/sorting-values";
+import { useIsMobile } from "@/utils/use-is-mobile";
 
 import { ChartProps } from "../shared/ChartProps";
 
@@ -352,6 +356,8 @@ const useAreasState = (
   xScaleTimeRange.range([0, chartWidth]);
   yScale.range([chartHeight, 0]);
 
+  const isMobile = useIsMobile();
+
   /** Tooltip */
   const getAnnotationInfo = useCallback(
     (datum: Observation): TooltipInfo => {
@@ -372,18 +378,22 @@ const useAreasState = (
         formatNumber,
       });
       const xAnchor = xScale(getX(datum));
-      const yAnchor = normalize
+      const yDesktopAnchor = normalize
         ? yScale.range()[0] * 0.5
         : yScale(sum(yValues) * (fields.segment ? 0.5 : 1));
+      const yAnchor = isMobile ? chartHeight : yDesktopAnchor;
+      const placement: TooltipPlacement = isMobile
+        ? { x: "center", y: "bottom" }
+        : getCenteredTooltipPlacement({
+            chartWidth,
+            xAnchor,
+            topAnchor: !fields.segment,
+          });
 
       return {
         xAnchor,
         yAnchor,
-        placement: getCenteredTooltipPlacement({
-          chartWidth,
-          xAnchor,
-          topAnchor: !fields.segment,
-        }),
+        placement,
         xValue: timeFormatUnit(getX(datum), xDimension.timeUnit),
         datum: {
           label: fields.segment && getSegmentAbbreviationOrLabel(datum),
@@ -420,6 +430,8 @@ const useAreasState = (
       normalize,
       getIdentityY,
       chartWidth,
+      chartHeight,
+      isMobile,
     ]
   );
 

app/charts/column/columns-grouped-state.tsx

@@ -1,10 +1,10 @@
 import { extent, group, max, rollup, sum } from "d3-array";
 import {
   ScaleBand,
-  ScaleLinear,
-  ScaleOrdinal,
   scaleBand,
+  ScaleLinear,
   scaleLinear,
+  ScaleOrdinal,
   scaleOrdinal,
   scaleTime,
 } from "d3-scale";
@@ -34,7 +34,10 @@ import {
   InteractiveXTimeRangeState,
 } from "@/charts/shared/chart-state";
 import { TooltipInfo } from "@/charts/shared/interaction/tooltip";
-import { getCenteredTooltipPlacement } from "@/charts/shared/interaction/tooltip-box";
+import {
+  getCenteredTooltipPlacement,
+  TooltipPlacement,
+} from "@/charts/shared/interaction/tooltip-box";
 import useChartFormatters from "@/charts/shared/use-chart-formatters";
 import { InteractionProvider } from "@/charts/shared/use-interaction";
 import { useSize } from "@/charts/shared/use-size";
@@ -47,6 +50,7 @@ import {
   getSortingOrders,
   makeDimensionValueSorters,
 } from "@/utils/sorting-values";
+import { useIsMobile } from "@/utils/use-is-mobile";
 
 import { ChartProps } from "../shared/ChartProps";
 
@@ -359,6 +363,8 @@ const useColumnsGroupedState = (
   xScaleTimeRange.range([0, chartWidth]);
   yScale.range([chartHeight, 0]);
 
+  const isMobile = useIsMobile();
+
   // Tooltip
   const getAnnotationInfo = (datum: Observation): TooltipInfo => {
     const bw = xScale.bandwidth();
@@ -383,12 +389,14 @@ const useColumnsGroupedState = (
 
     const xAnchorRaw = (xScale(x) as number) + bw * 0.5;
     const [yMin, yMax] = extent(yValues, (d) => d ?? 0) as [number, number];
-    const yAnchor = yScale((yMin + yMax) * 0.5);
-    const placement = getCenteredTooltipPlacement({
-      chartWidth,
-      xAnchor: xAnchorRaw,
-      topAnchor: !fields.segment,
-    });
+    const yAnchor = isMobile ? chartHeight : yScale((yMin + yMax) * 0.5);
+    const placement: TooltipPlacement = isMobile
+      ? { x: "center", y: "bottom" }
+      : getCenteredTooltipPlacement({
+          chartWidth,
+          xAnchor: xAnchorRaw,
+          topAnchor: !fields.segment,
+        });
 
     const getError = (d: Observation) => {
       if (!showYStandardError || !getYError || getYError(d) == null) {

app/charts/column/columns-stacked-state.tsx

@@ -1,10 +1,10 @@
 import { extent, group, rollup, sum } from "d3-array";
 import {
   ScaleBand,
-  ScaleLinear,
-  ScaleOrdinal,
   scaleBand,
+  ScaleLinear,
   scaleLinear,
+  ScaleOrdinal,
   scaleOrdinal,
   scaleTime,
 } from "d3-scale";
@@ -42,7 +42,10 @@ import {
   InteractiveXTimeRangeState,
 } from "@/charts/shared/chart-state";
 import { TooltipInfo } from "@/charts/shared/interaction/tooltip";
-import { getCenteredTooltipPlacement } from "@/charts/shared/interaction/tooltip-box";
+import {
+  getCenteredTooltipPlacement,
+  TooltipPlacement,
+} from "@/charts/shared/interaction/tooltip-box";
 import {
   getStackedTooltipValueFormatter,
   getStackedYScale,
@@ -60,6 +63,7 @@ import {
   getSortingOrders,
   makeDimensionValueSorters,
 } from "@/utils/sorting-values";
+import { useIsMobile } from "@/utils/use-is-mobile";
 
 import { ChartProps } from "../shared/ChartProps";
 
@@ -415,6 +419,8 @@ const useColumnsStackedState = (
   xScaleTimeRange.range([0, chartWidth]);
   yScale.range([chartHeight, 0]);
 
+  const isMobile = useIsMobile();
+
   // Tooltips
   const getAnnotationInfo = useCallback(
     (datum: Observation): TooltipInfo => {
@@ -438,12 +444,16 @@ const useColumnsStackedState = (
       });
 
       const xAnchorRaw = (xScale(x) as number) + bw * 0.5;
-      const yAnchor = yScale(sum(yValues.map((d) => d ?? 0)) * 0.5);
-      const placement = getCenteredTooltipPlacement({
-        chartWidth,
-        xAnchor: xAnchorRaw,
-        topAnchor: !fields.segment,
-      });
+      const yAnchor = isMobile
+        ? chartHeight
+        : yScale(sum(yValues.map((d) => d ?? 0)) * 0.5);
+      const placement: TooltipPlacement = isMobile
+        ? { x: "center", y: "bottom" }
+        : getCenteredTooltipPlacement({
+            chartWidth,
+            xAnchor: xAnchorRaw,
+            topAnchor: !fields.segment,
+          });
 
       return {
         xAnchor: xAnchorRaw + (placement.x === "right" ? 0.5 : -0.5) * bw,
@@ -479,6 +489,8 @@ const useColumnsStackedState = (
       getIdentityY,
       colors,
       chartWidth,
+      chartHeight,
+      isMobile,
       normalize,
       yScale,
     ]

app/charts/column/columns-state.tsx

@@ -1,8 +1,8 @@
 import { extent, max, rollup, sum } from "d3-array";
 import {
   ScaleBand,
-  ScaleLinear,
   scaleBand,
+  ScaleLinear,
   scaleLinear,
   scaleTime,
 } from "d3-scale";
@@ -27,7 +27,10 @@ import {
   InteractiveXTimeRangeState,
 } from "@/charts/shared/chart-state";
 import { TooltipInfo } from "@/charts/shared/interaction/tooltip";
-import { getCenteredTooltipPlacement } from "@/charts/shared/interaction/tooltip-box";
+import {
+  getCenteredTooltipPlacement,
+  TooltipPlacement,
+} from "@/charts/shared/interaction/tooltip-box";
 import useChartFormatters from "@/charts/shared/use-chart-formatters";
 import { InteractionProvider } from "@/charts/shared/use-interaction";
 import { useSize } from "@/charts/shared/use-size";
@@ -42,6 +45,7 @@ import {
   getSortingOrders,
   makeDimensionValueSorters,
 } from "@/utils/sorting-values";
+import { useIsMobile } from "@/utils/use-is-mobile";
 
 import { ChartProps } from "../shared/ChartProps";
 
@@ -217,10 +221,22 @@ const useColumnsState = (
   xScaleTimeRange.range([0, chartWidth]);
   yScale.range([chartHeight, 0]);
 
+  const isMobile = useIsMobile();
+
   // Tooltip
   const getAnnotationInfo = (d: Observation): TooltipInfo => {
     const xAnchor = (xScale(getX(d)) as number) + xScale.bandwidth() * 0.5;
-    const yAnchor = yScale(Math.max(getY(d) ?? NaN, 0));
+    const yAnchor = isMobile
+      ? chartHeight
+      : yScale(Math.max(getY(d) ?? NaN, 0));
+    const placement: TooltipPlacement = isMobile
+      ? { x: "center", y: "bottom" }
+      : getCenteredTooltipPlacement({
+          chartWidth,
+          xAnchor,
+          topAnchor: !fields.segment,
+        });
+
     const xLabel = getXAbbreviationOrLabel(d);
 
     const yValueFormatter = (value: number | null) =>
@@ -243,11 +259,7 @@ const useColumnsState = (
     return {
       xAnchor,
       yAnchor,
-      placement: getCenteredTooltipPlacement({
-        chartWidth,
-        xAnchor,
-        topAnchor: !fields.segment,
-      }),
+      placement,
       xValue: xTimeUnit ? timeFormatUnit(xLabel, xTimeUnit) : xLabel,
       datum: {
         label: undefined,

app/charts/combo/combo-line-column-state.tsx

@@ -27,7 +27,10 @@ import {
   InteractiveXTimeRangeState,
 } from "@/charts/shared/chart-state";
 import { TooltipInfo } from "@/charts/shared/interaction/tooltip";
-import { getCenteredTooltipPlacement } from "@/charts/shared/interaction/tooltip-box";
+import {
+  getCenteredTooltipPlacement,
+  TooltipPlacement,
+} from "@/charts/shared/interaction/tooltip-box";
 import { getTickNumber } from "@/charts/shared/ticks";
 import { TICK_FONT_SIZE } from "@/charts/shared/use-chart-theme";
 import { InteractionProvider } from "@/charts/shared/use-interaction";
@@ -38,6 +41,7 @@ import { useFormatFullDateAuto } from "@/formatters";
 import { TimeUnit } from "@/graphql/resolver-types";
 import { getTimeInterval } from "@/intervals";
 import { getTextWidth } from "@/utils/get-text-width";
+import { useIsMobile } from "@/utils/use-is-mobile";
 
 import { ChartProps } from "../shared/ChartProps";
 
@@ -151,6 +155,8 @@ const useComboLineColumnState = (
   const yScales = [yScale, yScaleLeft, yScaleRight];
   adjustScales(xScales, yScales, { chartWidth, chartHeight });
 
+  const isMobile = useIsMobile();
+
   // Tooltip
   const getAnnotationInfo = (d: Observation): TooltipInfo => {
     const x = getX(d);
@@ -172,17 +178,21 @@ const useComboLineColumnState = (
         };
       })
       .filter(truthy);
-    const yAnchor = mean(values.map((d) => d.yPos));
+    const yAnchor = isMobile ? chartHeight : mean(values.map((d) => d.yPos));
+    const placement: TooltipPlacement = isMobile
+      ? { x: "center", y: "bottom" }
+      : getCenteredTooltipPlacement({
+          chartWidth,
+          xAnchor: xScaled,
+          topAnchor: false,
+        });
+
     return {
       datum: { label: "", value: "0", color: schemeCategory10[0] },
       xAnchor: xScaled,
       yAnchor,
       xValue: timeFormatUnit(x, variables.xTimeUnit as TimeUnit),
-      placement: getCenteredTooltipPlacement({
-        chartWidth,
-        xAnchor: xScaled,
-        topAnchor: false,
-      }),
+      placement,
       values,
     } as TooltipInfo;
   };