373 lines
11 KiB
TypeScript
373 lines
11 KiB
TypeScript
import { AxisBottom, AxisLeft } from "@visx/axis";
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import { bottomTickLabelProps } from "@visx/axis/lib/axis/AxisBottom";
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import { leftTickLabelProps } from "@visx/axis/lib/axis/AxisLeft";
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import { GridColumns, GridRows } from "@visx/grid";
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import { Group } from "@visx/group";
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import { scaleBand, scaleLinear } from "@visx/scale";
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import { Bar } from "@visx/shape";
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import { Text } from "@visx/text";
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import React, { useState } from "react";
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interface BarGraphProps {
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data: BarGraphData[];
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/** Width of the entire graph, in pixels. */
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width: number;
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/** Height of the entire graph, in pixels. */
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height: number;
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/** Distance between the edge of the graph and the area where the bars are drawn, in pixels. */
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margin: {
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top: number;
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bottom: number;
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left: number;
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right: number;
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};
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className?: string;
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/** Font size of the category labels, in pixels. Default is 16px. */
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categoryLabelSize?: number;
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/** Font size of the value labels, in pixels. Default is 16px. */
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valueLabelSize?: number;
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/** Font size of the value that appears when hovering over a bar, in pixels. */
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hoverLabelSize?: number;
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}
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interface BarGraphData {
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category: string;
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value: number;
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}
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const COLOURS = {
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salmon: "#ffcad0",
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navy: "#2c3651",
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white: "#ffffff",
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pink: "#ef83b1",
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darkpink: "#cc5773",
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};
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const DEFAULT_LABEL_SIZE = 16;
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export function BarGraphHorizontal(props: BarGraphProps) {
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const {
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width,
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height,
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margin,
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data,
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className,
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categoryLabelSize = DEFAULT_LABEL_SIZE,
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valueLabelSize = DEFAULT_LABEL_SIZE,
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hoverLabelSize,
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} = props;
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const barPadding = 0.4;
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const categoryMax = height - margin.top - margin.bottom;
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const valueMax = width - margin.left - margin.right;
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const getCategory = (d: BarGraphData) => d.category;
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const getValue = (d: BarGraphData) => d.value;
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const [isBarHovered, setIsBarHovered] = useState(
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Object.fromEntries(
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data.map((d, idx) => [`${getCategory(d)}-${idx}`, false])
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)
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);
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const categoryScale = scaleBand({
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range: [0, categoryMax],
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domain: data.map(getCategory),
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padding: barPadding,
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});
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const valueScale = scaleLinear({
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range: [0, valueMax],
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nice: true,
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domain: [0, Math.max(...data.map(getValue))],
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});
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const categoryPoint = (d: BarGraphData) => categoryScale(getCategory(d));
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const valuePoint = (d: BarGraphData) => valueScale(getValue(d));
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return (
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<svg className={className} width={width} height={height}>
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<filter id="glow">
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<feDropShadow
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dx="0"
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dy="0"
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stdDeviation={4}
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floodColor={COLOURS.darkpink}
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/>
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</filter>
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<Group top={margin.top} left={margin.left}>
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<Group>
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{data.map((d, idx) => {
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const barName = `${getCategory(d)}-${idx}`;
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const barWidth = categoryScale.bandwidth();
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const backgroundBarWidth = barWidth / (1 - barPadding);
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return idx % 2 === 0 ? (
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<Bar
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key={`bar-${barName}-background`}
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x={0}
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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y={categoryPoint(d)! - (backgroundBarWidth - barWidth) / 2}
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width={valueMax}
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height={backgroundBarWidth}
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fill={COLOURS.navy}
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/>
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) : null;
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})}
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</Group>
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<GridColumns
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scale={valueScale}
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height={categoryMax}
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numTicks={5}
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stroke={COLOURS.white}
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strokeWidth={4}
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strokeDasharray="10"
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strokeLinecap="round"
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/>
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<Group>
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{data.map((d, idx) => {
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const barName = `${getCategory(d)}-${idx}`;
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const barLength = valuePoint(d);
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const barWidth = categoryScale.bandwidth();
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return (
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<Group
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key={`bar-${barName}`}
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onMouseEnter={() => {
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setIsBarHovered({ ...isBarHovered, [barName]: true });
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}}
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onMouseLeave={() => {
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setIsBarHovered({ ...isBarHovered, [barName]: false });
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}}
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>
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<Bar
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x={0}
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y={categoryPoint(d)}
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width={barLength}
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height={barWidth}
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fill={isBarHovered[barName] ? COLOURS.pink : COLOURS.salmon}
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filter={isBarHovered[barName] ? "url(#glow)" : undefined}
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/>
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{isBarHovered[barName] ? (
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<Text
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x={valuePoint(d) - 12}
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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y={categoryPoint(d)! + barWidth / 2}
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fill={COLOURS.white}
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fontFamily="Inconsolata"
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fontWeight={800}
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fontSize={hoverLabelSize ?? barWidth * 0.75}
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textAnchor="end"
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verticalAnchor="middle"
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>
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{getValue(d)}
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</Text>
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) : null}
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</Group>
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);
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})}
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</Group>
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</Group>
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<AxisLeft
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scale={categoryScale}
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top={margin.top}
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left={margin.left}
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hideAxisLine
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hideTicks
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tickLabelProps={() => {
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return {
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...leftTickLabelProps(),
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dx: "-0.5rem",
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dy: "0.25rem",
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fill: COLOURS.white,
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fontSize: `${categoryLabelSize / 16}rem`,
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fontFamily: "Inconsolata",
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fontWeight: 800,
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};
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}}
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/>
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<AxisBottom
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scale={valueScale}
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top={margin.top + categoryMax}
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left={margin.left}
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hideAxisLine
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hideTicks
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numTicks={5}
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tickLabelProps={() => {
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return {
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...bottomTickLabelProps(),
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dy: "0.25rem",
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fill: COLOURS.white,
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fontSize: `${valueLabelSize / 16}rem`,
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fontFamily: "Inconsolata",
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fontWeight: 800,
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};
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}}
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/>
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</svg>
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);
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}
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export function BarGraphVertical(props: BarGraphProps) {
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const {
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width,
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height,
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margin,
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data,
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className,
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categoryLabelSize = DEFAULT_LABEL_SIZE,
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valueLabelSize = DEFAULT_LABEL_SIZE,
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hoverLabelSize,
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} = props;
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const barPadding = 0.4;
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const categoryMax = width - margin.left - margin.right;
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const valueMax = height - margin.top - margin.bottom;
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const getCategory = (d: BarGraphData) => d.category;
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const getValue = (d: BarGraphData) => d.value;
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const [isBarHovered, setIsBarHovered] = useState(
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Object.fromEntries(
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data.map((d, idx) => [`${getCategory(d)}-${idx}`, false])
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)
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);
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const categoryScale = scaleBand({
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range: [0, categoryMax],
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domain: data.map(getCategory),
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padding: barPadding,
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});
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const valueScale = scaleLinear({
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range: [valueMax, 0],
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nice: true,
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domain: [0, Math.max(...data.map(getValue))],
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});
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const categoryPoint = (d: BarGraphData) => categoryScale(getCategory(d));
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const valuePoint = (d: BarGraphData) => valueScale(getValue(d));
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return (
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<svg className={className} width={width} height={height}>
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<filter id="glow">
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<feDropShadow
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dx="0"
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dy="0"
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stdDeviation={4}
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floodColor={COLOURS.darkpink}
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/>
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</filter>
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<Group top={margin.top} left={margin.left}>
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<Group>
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{data.map((d, idx) => {
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const barName = `${getCategory(d)}-${idx}`;
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const barWidth = categoryScale.bandwidth();
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const backgroundBarWidth = barWidth / (1 - barPadding);
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return idx % 2 === 0 ? (
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<Bar
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key={`bar-${barName}-background`}
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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x={categoryPoint(d)! - (backgroundBarWidth - barWidth) / 2}
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y={0}
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width={backgroundBarWidth}
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height={valueMax}
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fill={COLOURS.navy}
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/>
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) : null;
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})}
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</Group>
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<GridRows
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scale={valueScale}
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width={categoryMax}
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numTicks={5}
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stroke={COLOURS.white}
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strokeWidth={4}
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strokeDasharray="10"
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strokeLinecap="round"
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/>
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<Group>
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{data.map((d, idx) => {
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const barName = `${getCategory(d)}-${idx}`;
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const barHeight = valueMax - valuePoint(d);
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const barWidth = categoryScale.bandwidth();
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return (
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<Group
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key={`bar-${barName}`}
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onMouseEnter={() => {
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setIsBarHovered({ ...isBarHovered, [barName]: true });
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}}
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onMouseLeave={() => {
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setIsBarHovered({ ...isBarHovered, [barName]: false });
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}}
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>
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<Bar
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x={categoryPoint(d)}
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y={valueMax - barHeight}
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width={barWidth}
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height={barHeight}
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fill={isBarHovered[barName] ? COLOURS.pink : COLOURS.salmon}
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filter={isBarHovered[barName] ? "url(#glow)" : undefined}
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/>
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{isBarHovered[barName] ? (
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<Text
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// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
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x={categoryPoint(d)! + barWidth / 2}
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y={valueMax - barHeight + 12}
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fill={COLOURS.white}
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fontFamily="Inconsolata"
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fontWeight={800}
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fontSize={hoverLabelSize ?? barWidth * 0.5}
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textAnchor="middle"
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verticalAnchor="start"
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>
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{getValue(d)}
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</Text>
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) : null}
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</Group>
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);
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})}
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</Group>
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</Group>
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<AxisBottom
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scale={categoryScale}
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top={valueMax + margin.top}
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left={margin.left}
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hideAxisLine
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hideTicks
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tickLabelProps={() => {
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return {
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...bottomTickLabelProps(),
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dy: "-0.25rem",
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fill: COLOURS.white,
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fontSize: `${categoryLabelSize / 16}rem`,
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fontFamily: "Inconsolata",
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fontWeight: 800,
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width: categoryScale.bandwidth(),
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verticalAnchor: "start",
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};
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}}
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/>
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<AxisLeft
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scale={valueScale}
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top={margin.top}
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left={margin.left}
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hideAxisLine
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hideTicks
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numTicks={5}
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tickLabelProps={() => {
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return {
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...leftTickLabelProps(),
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dx: "-0.5rem",
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dy: "0.25rem",
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fill: COLOURS.white,
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fontSize: `${valueLabelSize / 16}rem`,
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fontFamily: "Inconsolata",
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fontWeight: 800,
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};
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}}
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/>
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</svg>
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);
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}
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