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- /*
- * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- import { extent, max } from 'd3-array';
- import { scaleLinear, ScaleLinear } from 'd3-scale';
- import { area as d3Area, curveBasis, line as d3Line } from 'd3-shape';
- import * as React from 'react';
- import { AutoSizer } from 'react-virtualized/dist/commonjs/AutoSizer';
- import './LineChart.css';
-
- interface DataPoint {
- x: number;
- y?: number;
- }
-
- interface Props {
- backdropConstraints?: [number, number];
- data: DataPoint[];
- displayBackdrop?: boolean;
- displayPoints?: boolean;
- displayVerticalGrid?: boolean;
- domain?: [number, number];
- height: number;
- padding?: [number, number, number, number];
- width?: number;
- xTicks?: {}[];
- xValues?: {}[];
- }
-
- export default class LineChart extends React.PureComponent<Props> {
- renderBackdrop(xScale: ScaleLinear<number, number>, yScale: ScaleLinear<number, number>) {
- const { displayBackdrop = true } = this.props;
-
- if (!displayBackdrop) {
- return null;
- }
-
- const area = d3Area<DataPoint>()
- .x((d) => xScale(d.x))
- .y0(yScale.range()[0])
- .y1((d) => yScale(d.y || 0))
- .defined((d) => d.y != null)
- .curve(curveBasis);
-
- let { data } = this.props;
- if (this.props.backdropConstraints) {
- const c = this.props.backdropConstraints;
- data = data.filter((d) => c[0] <= d.x && d.x <= c[1]);
- }
-
- return <path className="line-chart-backdrop" d={area(data) as string} />;
- }
-
- renderPoints(xScale: ScaleLinear<number, number>, yScale: ScaleLinear<number, number>) {
- const { displayPoints = true } = this.props;
-
- if (!displayPoints) {
- return null;
- }
-
- const points = this.props.data
- .filter((point) => point.y != null)
- .map((point, index) => {
- const x = xScale(point.x);
- const y = yScale(point.y || 0);
- return <circle className="line-chart-point" cx={x} cy={y} key={index} r="3" />;
- });
- return <g>{points}</g>;
- }
-
- renderVerticalGrid(xScale: ScaleLinear<number, number>, yScale: ScaleLinear<number, number>) {
- const { displayVerticalGrid = true } = this.props;
-
- if (!displayVerticalGrid) {
- return null;
- }
-
- const lines = this.props.data.map((point, index) => {
- const x = xScale(point.x);
- const y1 = yScale.range()[0];
- const y2 = yScale(point.y || 0);
- return <line className="line-chart-grid" key={index} x1={x} x2={x} y1={y1} y2={y2} />;
- });
- return <g>{lines}</g>;
- }
-
- renderXTicks(xScale: ScaleLinear<number, number>, yScale: ScaleLinear<number, number>) {
- const { xTicks = [] } = this.props;
-
- if (!xTicks.length) {
- return null;
- }
-
- const ticks = xTicks.map((tick, index) => {
- const point = this.props.data[index];
- const x = xScale(point.x);
- const y = yScale.range()[0];
- return (
- <text className="line-chart-tick" dy="1.5em" key={index} x={x} y={y}>
- {tick}
- </text>
- );
- });
- return <g>{ticks}</g>;
- }
-
- renderXValues(xScale: ScaleLinear<number, number>, yScale: ScaleLinear<number, number>) {
- const { xValues = [] } = this.props;
-
- if (!xValues.length) {
- return null;
- }
-
- const ticks = xValues.map((value, index) => {
- const point = this.props.data[index];
- const x = xScale(point.x);
- const y = yScale(point.y || 0);
- return (
- <text className="line-chart-tick" dy="-1em" key={index} x={x} y={y}>
- {value}
- </text>
- );
- });
- return <g>{ticks}</g>;
- }
-
- renderLine(xScale: ScaleLinear<number, number>, yScale: ScaleLinear<number, number>) {
- const p = d3Line<DataPoint>()
- .x((d) => xScale(d.x))
- .y((d) => yScale(d.y || 0))
- .defined((d) => d.y != null)
- .curve(curveBasis);
- return <path className="line-chart-path" d={p(this.props.data) as string} />;
- }
-
- renderChart = (width: number) => {
- const { height, padding = [10, 10, 10, 10] } = this.props;
-
- if (!width || !height) {
- return <div />;
- }
-
- const availableWidth = width - padding[1] - padding[3];
- const availableHeight = height - padding[0] - padding[2];
-
- const xScale = scaleLinear()
- .domain(extent(this.props.data, (d) => d.x) as [number, number])
- .range([0, availableWidth]);
- const yScale = scaleLinear().range([availableHeight, 0]);
-
- if (this.props.domain) {
- yScale.domain(this.props.domain);
- } else {
- const maxY = max(this.props.data, (d) => d.y) as number;
- yScale.domain([0, maxY]);
- }
-
- return (
- <svg className="line-chart" height={height} width={width}>
- <g transform={`translate(${padding[3]}, ${padding[0]})`}>
- {this.renderVerticalGrid(xScale, yScale)}
- {this.renderBackdrop(xScale, yScale)}
- {this.renderLine(xScale, yScale)}
- {this.renderPoints(xScale, yScale)}
- {this.renderXTicks(xScale, yScale)}
- {this.renderXValues(xScale, yScale)}
- </g>
- </svg>
- );
- };
-
- render() {
- return this.props.width !== undefined ? (
- this.renderChart(this.props.width)
- ) : (
- <AutoSizer disableHeight={true}>{(size) => this.renderChart(size.width)}</AutoSizer>
- );
- }
- }
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