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| import React from 'react';
import { throttle } from 'lodash';
import { debug } from 'app/utilities/logger';
import { style, getStyleVar } from 'app/styles';
import * as d3 from 'd3';
require('d3-selection-multi');
import { ICommit } from 'app/interfaces';
import { addMoveToFront } from 'app/utilities/d3';
import { dateFromEpochDate } from 'app/utilities/dates';
import { getUTCDateOfCommit, getHourOfCommit } from 'app/utilities/commits';
addMoveToFront(d3);
export interface TimeplotGraphProps {
// The children are the menu content
commits: ICommit[];
startDate: number;
endDate: number;
// used for the x scale range
earliestCommitDate: number;
latestCommitDate: number;
// increment or change the value passed to force a rerender of the graph
// for zoom or resize changes
forceRender?: number;
height?: number;
highlightedCommitIds?: string[];
style?: string | object;
onMouseEnter?: (evt, date?) => void;
onMouseLeave?: (evt, date?) => void;
onMouseMove?: (evt, date) => void;
onMouseDown?: (evt, date) => void;
onMouseUp?: (evt, date) => void;
}
const outerStyle = {
_extends: 'fill',
position: 'relative',
overflow: 'hidden',
};
const blobStyle = {
fill: '@colors.blobColor',
opacity: 0.2,
};
const highlightedBlobStyle = {
fill: '@colors.selected',
opacity: 0.5,
};
const markerStyle = {
position: 'absolute',
height: 130,
width: 3,
opacity: 0.5,
zIndex: 1,
top: 0,
};
const startDateMarkerStyle = {
_extends: markerStyle,
backgroundColor: '@colors.leftRevColor',
};
const endDateMarkerStyle = {
_extends: markerStyle,
backgroundColor: '@colors.rightRevColor',
};
const LEFT_PADDING = 20;
const PADDING = 20;
//
// This class is just the timeplot display element. See ./Timeplot for
// markers, hover popup, zoom and other features
//
export class TimeplotGraph extends React.Component<TimeplotGraphProps> {
private timeplotGraphRef;
private svg;
public xScale;
public yScale;
public rScale;
private updateTimeplotGraphThrottled;
constructor(props) {
super(props);
this.timeplotGraphRef = React.createRef();
this.renderTimeplotGraph = this.renderTimeplotGraph.bind(this);
this.updateTimeplotGraphThrottled = throttle(
this.updateTimeplotGraph,
1000
);
}
componentDidMount() {
this.renderTimeplotGraph();
window && window.addEventListener('resize', this.renderTimeplotGraph);
}
componentDidUpdate(prevProps) {
if (
prevProps.forceRender !== this.props.forceRender ||
prevProps.earliestCommitDate !== this.props.earliestCommitDate ||
prevProps.latestCommitDate !== this.props.latestCommitDate ||
JSON.stringify(prevProps.commits) !== JSON.stringify(this.props.commits)
) {
this.renderTimeplotGraph();
this.forceUpdate();
this.updateTimeplotGraphThrottled();
} else Iif (
prevProps.highlightedCommitIds !== this.props.highlightedCommitIds
) {
this.updateHighlightedCommits();
}
}
componentWillUnmount() {
window && window.removeEventListener('resize', this.renderTimeplotGraph);
}
focus() {
this.timeplotGraphRef.current.focus();
}
render() {
const { startDate, endDate } = this.props;
const startDateStyle =
startDate && this.xScale
? { left: this.xScale && this.xScale(dateFromEpochDate(startDate)) }
: {};
const endDateStyle =
endDate && this.xScale
? { left: this.xScale(dateFromEpochDate(endDate)) }
: {};
return (
<div
style={style(outerStyle, this.props.style)}
onMouseEnter={this.onMouseEnter}
onMouseLeave={this.onMouseLeave}
onMouseMove={this.onMouseMove}
onMouseDown={this.onMouseDown}
onMouseUp={this.onMouseUp}
data-testid="timeplotGraph"
>
<div style={style('fill')} ref={this.timeplotGraphRef} />
{startDate ? (
<div style={style(startDateMarkerStyle, startDateStyle)} />
) : null}
{endDate ? (
<div style={style(endDateMarkerStyle, endDateStyle)} />
) : null}
</div>
);
}
public getScrollWidth = () => {
const element = this.timeplotGraphRef.current;
return element && element.scrollWidth;
};
private getHeight(): number {
return (
(this.props.height && this.props.height) ||
this.timeplotGraphRef.current.clientHeight
);
}
public scrollLeft = newScrollLeft => {
const element = this.timeplotGraphRef.current;
element.scrollLeft = newScrollLeft;
};
private updateHighlightedCommits() {
const explosionFactor = this.props.highlightedCommitIds.length < 5 ? 25 : 5;
this.svg
.selectAll('circle[data-selected="true"]')
.styles(style(blobStyle))
.attr('data-selected', false);
this.svg
.selectAll(`circle`)
.filter(d => this.props.highlightedCommitIds.includes(d.id))
.moveToFront()
.styles(style(highlightedBlobStyle))
.attr('data-selected', true)
.transition()
.duration(300)
.attr(
'r',
d => this.rScale(d.linesAdded + d.linesDeleted || 0) * explosionFactor
)
.transition()
.duration(800)
.attr('r', d => this.rScale(d.linesAdded + d.linesDeleted || 0));
}
private clearTimeplotGraph() {
const element = this.timeplotGraphRef.current;
while (element.firstChild) {
element.removeChild(element.firstChild);
}
}
private renderTimeplotGraph() {
const element = this.timeplotGraphRef.current;
this.clearTimeplotGraph();
// this.$element.width(this.zoom * 100 + '%');
this.svg = d3
.select(element)
.append('svg')
.attr('width', element.clientWidth)
.attr('height', this.getHeight());
this.calibrateScales();
this.renderAxis();
Iif (this.props.commits.length <= 0) {
element.innerHtml =
"<div class='placeholder'>No commits, nothing to see here.</div>";
return;
}
this.renderBlobs();
this.updateHighlightedCommits();
debug(`TimeplotGraph: rendered`);
}
private updateTimeplotGraph() {
this.calibrateScales();
this.renderBlobs();
this.updateHighlightedCommits();
}
private calibrateScales() {
const element = this.timeplotGraphRef.current;
const { earliestCommitDate, latestCommitDate, commits } = this.props;
const w = element.clientWidth;
const h = this.getHeight();
const maxImpact = d3.max(commits.map(d => d.linesAdded + d.linesDeleted));
const minDate = dateFromEpochDate(earliestCommitDate);
const maxDate = dateFromEpochDate(latestCommitDate);
this.xScale = d3
.scaleTime()
.domain([minDate, maxDate])
.range([LEFT_PADDING, w - PADDING]);
this.yScale = d3
.scaleLinear()
.domain([0, 25])
.range([10, h - PADDING * 2 - 20]);
this.rScale = d3
.scalePow(10)
.domain([1, maxImpact > 10000 ? 10000 : maxImpact])
.range([3, 40])
.clamp(true);
}
private renderAxis() {
const element = this.timeplotGraphRef.current;
const h = this.getHeight();
const textColor = getStyleVar('colors', 'text');
const xAxis = d3
.axisBottom()
.scale(this.xScale)
.ticks(element.scrollWidth / 100);
const renderedXaxis = this.svg
.append('g')
.attr('class', 'axis')
.attr('transform', `translate(0, ${h - PADDING})`)
.call(xAxis);
renderedXaxis.selectAll('path,line').style('stroke', textColor);
renderedXaxis.selectAll('text').style('fill', textColor);
}
private renderBlobs() {
return this.svg
.selectAll('circle')
.data(this.props.commits)
.enter()
.append('circle')
.attr('data-id', d => d.id)
.attr('cx', d => this.xScale(getUTCDateOfCommit(d)))
.attr('cy', d => this.yScale(getHourOfCommit(d) + 10))
.styles(style(blobStyle))
.transition()
.duration(1000)
.attr('r', d => this.rScale(d.linesAdded + d.linesDeleted));
}
private getDatesForMouseEvent(evt) {
const element = this.timeplotGraphRef.current;
const rect = element.getBoundingClientRect();
const relativeLeft = evt.clientX - rect.x + element.scrollLeft;
const exactDate = this.xScale.invert(relativeLeft);
const startLeft = relativeLeft < 0 ? 0 : relativeLeft;
const startDate = this.xScale.invert(startLeft);
const endLeft =
relativeLeft + 10 > element.width ? element.width : relativeLeft + 10;
const endDate = this.xScale.invert(endLeft);
return { exactDate, startDate, endDate, relativeLeft };
}
private onMouseEnter = evt => {
this.props.onMouseEnter && this.props.onMouseEnter(evt);
};
private onMouseLeave = evt => {
this.props.onMouseLeave && this.props.onMouseLeave(evt);
};
private onMouseMove = evt => {
Iif (!this.props.onMouseMove) {
return;
}
const dates = this.getDatesForMouseEvent(evt);
this.setState({ hoverMarkerLeft: dates.relativeLeft });
this.props.onMouseMove(evt, dates);
};
private onMouseDown = evt => {
Iif (!this.props.onMouseDown) {
return;
}
const dates = this.getDatesForMouseEvent(evt);
this.props.onMouseDown(evt, dates);
};
private onMouseUp = evt => {
Iif (!this.props.onMouseUp) {
return;
}
const dates = this.getDatesForMouseEvent(evt);
this.props.onMouseUp(evt, dates);
};
}
|