cs-2022-class-profile/components/StackedBarGraph.tsx

456 lines
14 KiB
TypeScript

import { AxisLeft, AxisBottom } from "@visx/axis";
import { localPoint } from "@visx/event";
import { GridRows, GridColumns } from "@visx/grid";
import { Group } from "@visx/group";
import { LegendOrdinal } from "@visx/legend";
import { Point } from "@visx/point";
import { scaleBand, scaleLinear, scaleOrdinal } from "@visx/scale";
import { BarStack, BarStackHorizontal, Line } from "@visx/shape";
import { SeriesPoint } from "@visx/shape/lib/types";
import { withTooltip, Tooltip } from "@visx/tooltip";
import { WithTooltipProvidedProps } from "@visx/tooltip/lib/enhancers/withTooltip";
import React from "react";
import { Color } from "utils/Color";
import styles from "./StackedBarGraph.module.css";
interface StackedBarData {
category: string;
[key: string]: number | string;
}
type TooltipData = {
bar: SeriesPoint<StackedBarData>;
key: string;
index: number;
height: number;
width: number;
x: number;
y: number;
color: string;
};
export type StackedBarProps = {
data: StackedBarData[];
/** Width of the entire graph, in pixels, greater than 10. */
width: number;
/** Height of the entire graph, in pixels. */
height: number;
/** Names of the groups appearing in the legend */
keys: string[];
/** Colours for each key */
colorRange: string[];
/** Distance between the edge of the graph and the area where the bars are drawn, in pixels. */
margin: { top: number; left: number };
/** Number of ticks for the value axis */
numTicksValueAxis?: number;
/** Distance between the left axis labels and the start of the lines of the graph, in px. */
axisLeftOffset?: number;
/** Distance between the bottom axis and the bottom of the container of the graph, in px. */
axisBottomOffset?: number;
/** Distance between the right side of the graph and the legend, in px. */
legendLeftOffset?: number;
/** Distance between the top of the graph and the legend, in px. */
legendTopOffset?: number;
/** Width of the lines in the graph, in px. */
strokeWidth?: number;
/** Length of the dashes and the gaps in the graph, in px. */
strokeDashArray?: string;
/** Padding between each bar in the stacked bar graph, from 0 to 1 */
scalePadding?: number;
/** Margin for each item in the legend */
itemMargin?: string;
/** Factor multiplied with an offset to center the labels of the category-axis depending on the width/height of the graph.
* >1 for width/height <600 and <1 for width/height >600 (vertical=width/horizontal=height) */
categoryAxisLeftFactor?: number;
};
let tooltipTimeout: number;
export const StackedBarGraphVertical = withTooltip<
StackedBarProps,
TooltipData
>(
({
data,
width,
height,
keys,
colorRange,
margin,
scalePadding = 0.3,
numTicksValueAxis = 6,
axisLeftOffset = 40,
axisBottomOffset = 40,
strokeWidth = 2.5,
strokeDashArray = "10,4",
legendLeftOffset = 40,
legendTopOffset = 40,
itemMargin = "15px 0 0 0",
categoryAxisLeftFactor = 1,
tooltipOpen,
tooltipLeft,
tooltipTop,
tooltipData,
hideTooltip,
showTooltip,
}: StackedBarProps & WithTooltipProvidedProps<TooltipData>) => {
const yTotals = data.reduce((allTotals, currCategory) => {
const yTotal = keys.reduce((categoryTotal, k) => {
categoryTotal += currCategory[k] as number;
return categoryTotal;
}, 0);
allTotals.push(yTotal);
return allTotals;
}, [] as number[]);
const TICK_LABEL_FONT_WEIGHT = 800;
// accessors
const getCategory = (d: StackedBarData) => d.category;
// scales
const categoryScale = scaleBand<string>({
domain: data.map(getCategory),
padding: scalePadding,
});
const valueScale = scaleLinear<number>({
domain: [0, Math.max(...yTotals)],
nice: true,
});
const colorScale = scaleOrdinal<string, string>({
domain: keys,
range: colorRange,
});
// bounds
const xMax = width;
const yMax = height - margin.top - axisBottomOffset;
categoryScale.rangeRound([0, xMax - axisLeftOffset]);
valueScale.range([yMax, 0]);
return width < 10 ? null : (
<div className={styles.container}>
<svg width={width} height={height}>
<Group top={margin.top} left={margin.left}>
<GridRows
scale={valueScale}
width={xMax}
height={yMax}
left={axisLeftOffset}
numTicks={numTicksValueAxis}
stroke={Color.tertiaryBackground}
strokeWidth={strokeWidth}
strokeDasharray={strokeDashArray}
/>
<GridColumns
scale={categoryScale}
height={yMax}
left={axisLeftOffset}
offset={categoryScale.bandwidth() / 2}
stroke={Color.tertiaryBackground}
strokeWidth={strokeWidth}
strokeDasharray={strokeDashArray}
/>
<Group left={axisLeftOffset}>
<BarStack<StackedBarData, string>
data={data}
keys={keys}
x={getCategory}
xScale={categoryScale}
yScale={valueScale}
color={colorScale}
>
{(barStacks) =>
barStacks.map((barStack) =>
barStack.bars.map((bar) => (
<rect
className={styles.barStack}
key={`bar-stack-${barStack.index}-${bar.index}`}
x={bar.x}
y={bar.y}
height={bar.height}
width={bar.width / 2}
fill={bar.color}
onMouseLeave={() => {
tooltipTimeout = window.setTimeout(() => {
hideTooltip();
}, 300);
}}
onMouseMove={(event) => {
if (tooltipTimeout) clearTimeout(tooltipTimeout);
const eventSvgCoords = localPoint(event);
const left = bar.x + bar.width / 2;
showTooltip({
tooltipData: bar,
tooltipTop: eventSvgCoords?.y,
tooltipLeft: left,
});
}}
/>
))
)
}
</BarStack>
</Group>
<Line
fill={Color.tertiaryBackground}
to={new Point({ x: axisLeftOffset, y: 0 })}
from={new Point({ x: axisLeftOffset, y: yMax })}
stroke={Color.tertiaryBackground}
strokeWidth={strokeWidth}
strokeDasharray={strokeDashArray}
/>
<AxisBottom
top={yMax}
scale={categoryScale}
left={
((categoryScale.bandwidth() * 100) / width) *
categoryAxisLeftFactor
}
hideTicks
hideAxisLine
labelProps={{
fontSize: `${10 / 16}rem`,
}}
tickLabelProps={() => ({
fill: Color.label,
fontWeight: TICK_LABEL_FONT_WEIGHT,
})}
/>
<AxisLeft
scale={valueScale}
top={5}
numTicks={numTicksValueAxis}
hideAxisLine
labelProps={{
fontSize: `${10 / 16}rem`,
}}
tickLabelProps={() => {
return {
fill: Color.label,
fontWeight: TICK_LABEL_FONT_WEIGHT,
};
}}
/>
</Group>
</svg>
<div
className={styles.legend}
style={{ left: width + legendLeftOffset, top: legendTopOffset }}
>
<LegendOrdinal
scale={colorScale}
direction="column"
itemMargin={itemMargin}
/>
</div>
{tooltipOpen && tooltipData ? (
<Tooltip
className={styles.toolTip}
top={tooltipTop}
left={tooltipLeft}
unstyled
>
<p className={styles.key}>{tooltipData.key}</p>
<p>{tooltipData.bar.data[tooltipData.key]}</p>
<p>{getCategory(tooltipData.bar.data)}</p>
</Tooltip>
) : null}
</div>
);
}
);
export const StackedBarGraphHorizontal = withTooltip<
StackedBarProps,
TooltipData
>(
({
data,
width,
height,
keys,
colorRange,
margin,
scalePadding = 0.3,
numTicksValueAxis = 6,
axisLeftOffset = 40,
axisBottomOffset = 40,
strokeWidth = 2.5,
strokeDashArray = "10,4",
legendLeftOffset = 40,
legendTopOffset = 40,
itemMargin = "15px 0 0 0",
categoryAxisLeftFactor = 1,
tooltipOpen,
tooltipLeft,
tooltipTop,
tooltipData,
hideTooltip,
showTooltip,
}: StackedBarProps & WithTooltipProvidedProps<TooltipData>) => {
const yTotals = data.reduce((allTotals, currCategory) => {
const yTotal = keys.reduce((categoryTotal, k) => {
categoryTotal += currCategory[k] as number;
return categoryTotal;
}, 0);
allTotals.push(yTotal);
return allTotals;
}, [] as number[]);
const TICK_LABEL_FONT_WEIGHT = 800;
// accessors
const getCategory = (d: StackedBarData) => d.category;
// scales
const valueScale = scaleLinear<number>({
domain: [0, Math.max(...yTotals)],
nice: true,
});
const categoryScale = scaleBand<string>({
domain: data.map(getCategory),
padding: scalePadding,
});
const colorScale = scaleOrdinal<string, string>({
domain: keys,
range: colorRange,
});
// bounds
const xMax = width;
const yMax = height - margin.top - axisBottomOffset;
categoryScale.rangeRound([yMax, 0]);
valueScale.range([0, xMax - axisLeftOffset]);
return width < 10 ? null : (
<div className={styles.container}>
<svg width={width} height={height}>
<Group top={margin.top} left={margin.left}>
<GridRows
scale={categoryScale}
width={xMax}
height={yMax}
offset={categoryScale.bandwidth() / 2}
left={axisLeftOffset}
stroke={Color.tertiaryBackground}
strokeWidth={strokeWidth}
strokeDasharray={strokeDashArray}
/>
<GridColumns
scale={valueScale}
height={yMax}
numTicks={numTicksValueAxis}
left={axisLeftOffset}
stroke={Color.tertiaryBackground}
strokeWidth={strokeWidth}
strokeDasharray={strokeDashArray}
/>
<Group left={axisLeftOffset}>
<BarStackHorizontal<StackedBarData, string>
data={data}
keys={keys}
y={getCategory}
xScale={valueScale}
yScale={categoryScale}
color={colorScale}
>
{(barStacks) =>
barStacks.map((barStack) =>
barStack.bars.map((bar) => (
<rect
className={styles.barStack}
key={`bar-stack-${barStack.index}-${bar.index}`}
x={bar.x}
y={bar.y}
height={bar.height / 2}
width={bar.width}
fill={bar.color}
onMouseLeave={() => {
tooltipTimeout = window.setTimeout(() => {
hideTooltip();
}, 300);
}}
onMouseMove={(event) => {
if (tooltipTimeout) clearTimeout(tooltipTimeout);
const eventSvgCoords = localPoint(event);
const left = bar.x + bar.width / 2;
showTooltip({
tooltipData: bar,
tooltipTop: eventSvgCoords?.y,
tooltipLeft: left,
});
}}
/>
))
)
}
</BarStackHorizontal>
</Group>
<AxisBottom
top={yMax}
scale={valueScale}
left={axisLeftOffset}
numTicks={numTicksValueAxis}
hideAxisLine
hideTicks
labelProps={{
fontSize: `${10 / 16}rem`,
}}
tickLabelProps={() => ({
fill: Color.label,
fontWeight: TICK_LABEL_FONT_WEIGHT,
})}
/>
<AxisLeft
top={
-((categoryScale.bandwidth() * 100) / width) *
categoryAxisLeftFactor
}
scale={categoryScale}
hideAxisLine
hideTicks
labelProps={{
fontSize: `${10 / 16}rem`,
}}
tickLabelProps={() => {
return {
fill: Color.label,
fontWeight: TICK_LABEL_FONT_WEIGHT,
};
}}
/>
</Group>
</svg>
<div
className={styles.legend}
style={{ left: width + legendLeftOffset, top: legendTopOffset }}
>
<LegendOrdinal
scale={colorScale}
direction="column"
itemMargin={itemMargin}
/>
</div>
{tooltipOpen && tooltipData ? (
<Tooltip
className={styles.toolTip}
top={tooltipTop}
left={tooltipLeft}
unstyled
>
<p className={styles.key}>{tooltipData.key}</p>
<p>{tooltipData.bar.data[tooltipData.key]}</p>
<p>{getCategory(tooltipData.bar.data)}</p>
</Tooltip>
) : null}
</div>
);
}
);