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import { arc as d3Arc } from 'd3-shape';
import { classNamesFunction, getRTL } from '@fluentui/react/lib/Utilities';
import {
IGaugeChartProps,
IGaugeChartSegment,
IGaugeChartStyleProps,
IGaugeChartStyles,
GaugeValueFormat,
GaugeChartVariant,
} from './GaugeChart.types';
import { IProcessedStyleSet } from '@fluentui/react/lib/Styling';
import { convertToLocaleString } from '../../utilities/locale-util';
import {
Points,
formatValueWithSIPrefix,
getAccessibleDataObject,
getColorFromToken,
getNextColor,
pointTypes,
} from '../../utilities/index';
import { ILegend, LegendShape, Legends, Shape } from '../Legends/index';
import { FocusZone, FocusZoneDirection } from '@fluentui/react-focus';
import { Callout, DirectionalHint } from '@fluentui/react/lib/Callout';
import { IYValueHover } from '../../index';
import { SVGTooltipText } from '../../utilities/SVGTooltipText';
import { select as d3Select } from 'd3-selection';
const GAUGE_MARGIN = 16;
const LABEL_WIDTH = 36;
const LABEL_HEIGHT = 16;
const LABEL_OFFSET = 4;
const TITLE_OFFSET = 11;
const EXTRA_NEEDLE_LENGTH = 4;
export const ARC_PADDING = 2;
export const BREAKPOINTS = [
{ minRadius: 52, arcWidth: 12, fontSize: 20 },
{ minRadius: 70, arcWidth: 16, fontSize: 24 },
{ minRadius: 88, arcWidth: 20, fontSize: 32 },
{ minRadius: 106, arcWidth: 24, fontSize: 32 },
{ minRadius: 124, arcWidth: 28, fontSize: 40 },
{ minRadius: 142, arcWidth: 32, fontSize: 40 },
];
const getClassNames = classNamesFunction<IGaugeChartStyleProps, IGaugeChartStyles>();
export const calcNeedleRotation = (chartValue: number, minValue: number, maxValue: number) => {
let needleRotation = ((chartValue - minValue) / (maxValue - minValue)) * 180;
if (needleRotation < 0) {
needleRotation = 0;
} else if (needleRotation > 180) {
needleRotation = 180;
}
return needleRotation;
};
export const getSegmentLabel = (
segment: IExtendedSegment,
minValue: number,
maxValue: number,
variant?: GaugeChartVariant,
isAriaLabel: boolean = false,
) => {
if (isAriaLabel) {
return minValue === 0 && variant === GaugeChartVariant.SingleSegment
? `${segment.legend}, ${segment.size} out of ${maxValue} or ${((segment.size / maxValue) * 100).toFixed()}%`
: `${segment.legend}, ${segment.start} to ${segment.end}`;
}
return minValue === 0 && variant === GaugeChartVariant.SingleSegment
? `${segment.size} (${((segment.size / maxValue) * 100).toFixed()}%)`
: `${segment.start} - ${segment.end}`;
};
export const getChartValueLabel = (
chartValue: number,
minValue: number,
maxValue: number,
chartValueFormat?: GaugeValueFormat | ((sweepFraction: [number, number]) => string),
forCallout: boolean = false,
): string => {
if (forCallout) {
// When displaying the chart value as a percentage, use fractions in the callout, and vice versa.
// This helps clarify the actual value and avoid repetition.
return minValue !== 0
? chartValue.toString()
: chartValueFormat === GaugeValueFormat.Fraction
? `${((chartValue / maxValue) * 100).toFixed()}%`
: `${chartValue}/${maxValue}`;
}
return typeof chartValueFormat === 'function'
? chartValueFormat([chartValue - minValue, maxValue - minValue])
: minValue !== 0
? chartValue.toString()
: chartValueFormat === GaugeValueFormat.Fraction
? `${chartValue}/${maxValue}`
: `${((chartValue / maxValue) * 100).toFixed()}%`;
};
interface IYValue extends Omit<IYValueHover, 'y'> {
y?: string | number;
}
export interface IGaugeChartState {
hoveredLegend: string;
selectedLegend: string;
focusedElement?: string;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
calloutTarget: any;
isCalloutVisible: boolean;
hoverXValue: string | number;
hoverYValues: IYValue[];
width: number;
height: number;
}
export interface IExtendedSegment extends IGaugeChartSegment {
start: number;
end: number;
}
export class GaugeChartBase extends React.Component<IGaugeChartProps, IGaugeChartState> {
private _classNames: IProcessedStyleSet<IGaugeChartStyles>;
private _isRTL: boolean;
private _innerRadius: number;
private _outerRadius: number;
private _minValue: number;
private _maxValue: number;
private _segments: IExtendedSegment[];
private _calloutAnchor: string;
private _rootElem: HTMLDivElement | null;
private _margins: { left: number; right: number; top: number; bottom: number };
private _legendsHeight: number;
constructor(props: IGaugeChartProps) {
super(props);
this._margins = this._getMargins();
this._legendsHeight = !props.hideLegend ? 24 : 0;
this.state = {
hoveredLegend: '',
selectedLegend: '',
focusedElement: '',
calloutTarget: null,
isCalloutVisible: false,
hoverXValue: '',
hoverYValues: [],
width: 140 + this._margins.left + this._margins.right,
height: 70 + this._margins.top + this._margins.bottom + this._legendsHeight,
};
this._isRTL = getRTL(props.theme);
this._calloutAnchor = '';
}
public componentDidMount(): void {
if (this._rootElem) {
this.setState({
width: this._rootElem.clientWidth,
height: this._rootElem.clientHeight,
});
}
}
public render(): React.ReactNode {
this._margins = this._getMargins();
this._legendsHeight = !this.props.hideLegend ? 24 : 0;
const width = this.props.width || this.state.width;
const height = this.props.height || this.state.height;
this._outerRadius = Math.min(
(width - (this._margins.left + this._margins.right)) / 2,
height - (this._margins.top + this._margins.bottom + this._legendsHeight),
);
const { arcWidth, chartValueSize } = this._getStylesBasedOnBreakpoint();
this._innerRadius = this._outerRadius - arcWidth;
const { arcs } = this._processProps();
this._classNames = getClassNames(this.props.styles!, {
theme: this.props.theme!,
className: this.props.className,
chartWidth: width,
chartHeight: height - this._legendsHeight,
chartValueSize,
});
return (
<div className={this._classNames.root} ref={el => (this._rootElem = el)}>
<FocusZone direction={FocusZoneDirection.horizontal}>
<svg
className={this._classNames.chart}
aria-label={`This is a gauge chart with ${this._segments.length} section represented.`}
onMouseLeave={this._handleMouseOut}
>
<g transform={`translate(${width / 2}, ${height - (this._margins.bottom + this._legendsHeight)})`}>
{this.props.chartTitle && (
<text
x={0}
y={-(this._outerRadius + TITLE_OFFSET)}
textAnchor="middle"
className={this._classNames.chartTitle}
>
{this.props.chartTitle}
</text>
)}
{!this.props.hideMinMax && (
<>
<text
x={(this._isRTL ? 1 : -1) * (this._outerRadius + LABEL_OFFSET)}
y={0}
textAnchor="end"
className={this._classNames.limits}
role="img"
aria-label={`Min value: ${this._minValue}`}
>
{formatValueWithSIPrefix(this._minValue)}
</text>
<text
x={(this._isRTL ? -1 : 1) * (this._outerRadius + LABEL_OFFSET)}
y={0}
textAnchor="start"
className={this._classNames.limits}
role="img"
aria-label={`Max value: ${this._maxValue}`}
>
{formatValueWithSIPrefix(this._maxValue)}
</text>
</>
)}
{arcs.map((arc, index) => {
const segment = this._segments[arc.segmentIndex];
return (
<path
key={index}
d={arc.d}
fill={segment.color}
fillOpacity={this._legendHighlighted(segment.legend) || this._noLegendHighlighted() ? 1 : 0.1}
strokeWidth={this.state.focusedElement === segment.legend ? ARC_PADDING : 0}
className={this._classNames.segment}
{...getAccessibleDataObject(
{
ariaLabel: getSegmentLabel(segment, this._minValue, this._maxValue, this.props.variant, true),
...segment.accessibilityData,
},
'img',
true,
)}
onFocus={e => this._handleFocus(e, segment.legend)}
onBlur={this._handleBlur}
onMouseEnter={e => this._handleMouseOver(e, segment.legend)}
onMouseMove={e => this._handleMouseOver(e, segment.legend)}
data-is-focusable={this._legendHighlighted(segment.legend) || this._noLegendHighlighted()}
/>
);
})}
{this._renderNeedle()}
<g
onMouseEnter={e => this._handleMouseOver(e, 'Chart value')}
onMouseMove={e => this._handleMouseOver(e, 'Chart value')}
>
<SVGTooltipText
content={getChartValueLabel(
this.props.chartValue,
this._minValue,
this._maxValue,
this.props.chartValueFormat,
)}
textProps={{
x: 0,
y: 0,
textAnchor: 'middle',
className: this._classNames.chartValue,
role: 'img',
'aria-label':
'Current value: ' +
getChartValueLabel(
this.props.chartValue,
this._minValue,
this._maxValue,
this.props.chartValueFormat,
),
}}
maxWidth={this._innerRadius * 2 - 24}
wrapContent={this._wrapContent}
/>
</g>
{this.props.sublabel && (
<SVGTooltipText
content={this.props.sublabel}
textProps={{
x: 0,
y: 4,
textAnchor: 'middle',
dominantBaseline: 'hanging',
className: this._classNames.sublabel,
role: 'img',
'aria-label': this.props.sublabel,
}}
maxWidth={this._innerRadius * 2}
wrapContent={this._wrapContent}
/>
)}
</g>
</svg>
</FocusZone>
{this._renderLegends()}
{!this.props.hideTooltip && this.state.isCalloutVisible && (
<Callout
target={this.state.calloutTarget}
directionalHint={DirectionalHint.topAutoEdge}
gapSpace={15}
isBeakVisible={false}
onDismiss={this._handleCalloutDismiss}
{...this.props.calloutProps}
>
{this._multiValueCallout({
hoverXValue: this.state.hoverXValue,
YValueHover: this.state.hoverYValues,
})}
</Callout>
)}
</div>
);
}
private _getMargins = () => {
const { hideMinMax, chartTitle, sublabel } = this.props;
return {
left: (!hideMinMax ? LABEL_OFFSET + LABEL_WIDTH : 0) + GAUGE_MARGIN,
right: (!hideMinMax ? LABEL_OFFSET + LABEL_WIDTH : 0) + GAUGE_MARGIN,
top: (chartTitle ? TITLE_OFFSET + LABEL_HEIGHT : EXTRA_NEEDLE_LENGTH / 2) + GAUGE_MARGIN,
bottom: (sublabel ? LABEL_OFFSET + LABEL_HEIGHT : 0) + GAUGE_MARGIN,
};
};
private _getStylesBasedOnBreakpoint = () => {
for (let index = BREAKPOINTS.length - 1; index >= 0; index -= 1) {
if (this._outerRadius >= BREAKPOINTS[index].minRadius) {
return {
arcWidth: BREAKPOINTS[index].arcWidth,
chartValueSize: BREAKPOINTS[index].fontSize,
};
}
}
return {
arcWidth: BREAKPOINTS[0].arcWidth,
chartValueSize: BREAKPOINTS[0].fontSize,
};
};
private _processProps = () => {
const { minValue = 0, maxValue, theme } = this.props;
let total = minValue;
const segments: IExtendedSegment[] = this.props.segments.map((segment, index) => {
const size = Math.max(segment.size, 0);
total += size;
return {
legend: segment.legend,
size,
color:
typeof segment.color !== 'undefined'
? getColorFromToken(segment.color, theme!.isInverted)
: getNextColor(index, 0, theme!.isInverted),
accessibilityData: segment.accessibilityData,
start: total - size,
end: total,
};
});
if (typeof maxValue !== 'undefined' && total < maxValue) {
segments.push({
legend: 'Unknown',
size: maxValue - total,
color: theme!.palette.neutralLight,
start: total,
end: maxValue,
});
total = maxValue;
}
const arcGenerator = d3Arc()
.padAngle(ARC_PADDING / this._outerRadius)
.padRadius(this._outerRadius);
const rtlSafeSegments = this._isRTL ? Array.from(segments).reverse() : segments;
let prevAngle = -Math.PI / 2;
const arcs = rtlSafeSegments.map((segment, index) => {
const endAngle = prevAngle + (segment.size / (total - minValue)) * Math.PI;
const d = arcGenerator({
innerRadius: this._innerRadius,
outerRadius: this._outerRadius,
startAngle: prevAngle,
endAngle,
})!;
prevAngle = endAngle;
return {
d,
segmentIndex: this._isRTL ? segments.length - 1 - index : index,
};
});
this._minValue = minValue;
this._maxValue = total;
this._segments = segments;
return {
arcs,
};
};
private _renderNeedle = () => {
const needleRotation = calcNeedleRotation(this.props.chartValue, this._minValue, this._maxValue);
const rtlSafeNeedleRotation = this._isRTL ? 180 - needleRotation : needleRotation;
const strokeWidth = 2;
const halfStrokeWidth = strokeWidth / 2;
const needleLength = this._outerRadius - this._innerRadius + EXTRA_NEEDLE_LENGTH;
return (
<g transform={`rotate(${rtlSafeNeedleRotation}, 0, 0)`}>
<path
d={`
M 0,${-halfStrokeWidth - 3}
L ${-needleLength},${-halfStrokeWidth - 1}
A ${halfStrokeWidth + 1},${halfStrokeWidth + 1},0,0,0,${-needleLength},${halfStrokeWidth + 1}
L 0,${halfStrokeWidth + 3}
A ${halfStrokeWidth + 3},${halfStrokeWidth + 3},0,0,0,0,${-halfStrokeWidth - 3}
`}
strokeWidth={strokeWidth}
className={this._classNames.needle}
transform={`translate(${-this._innerRadius + EXTRA_NEEDLE_LENGTH / 2})`}
data-is-focusable={true}
onFocus={e => this._handleFocus(e, 'Needle')}
onBlur={this._handleBlur}
onMouseEnter={e => this._handleMouseOver(e, 'Needle')}
onMouseMove={e => this._handleMouseOver(e, 'Needle')}
/>
</g>
);
};
private _renderLegends = () => {
if (this.props.hideLegend) {
return null;
}
const legends: ILegend[] = this._segments.map(segment => {
return {
title: segment.legend,
color: segment.color!,
action: () => {
if (this.state.selectedLegend === segment.legend) {
this.setState({ selectedLegend: '' });
} else {
this.setState({ selectedLegend: segment.legend });
}
},
hoverAction: () => {
this.setState({ hoveredLegend: segment.legend });
},
onMouseOutAction: () => {
this.setState({ hoveredLegend: '' });
},
};
});
return (
<div className={this._classNames.legendsContainer}>
<Legends legends={legends} centerLegends {...this.props.legendProps} />
</div>
);
};
/**
* This function checks if the given legend is highlighted or not.
* A legend can be highlighted in 2 ways:
* 1. selection: if the user clicks on it
* 2. hovering: if there is no selected legend and the user hovers over it
*/
private _legendHighlighted = (legend: string) => {
return (
this.state.selectedLegend === legend || (this.state.selectedLegend === '' && this.state.hoveredLegend === legend)
);
};
/**
* This function checks if none of the legends is selected or hovered.
*/
private _noLegendHighlighted = () => {
return this.state.selectedLegend === '' && this.state.hoveredLegend === '';
};
private _handleFocus = (focusEvent: React.FocusEvent<SVGElement>, focusedElement: string) => {
this._showCallout(focusEvent.target, focusedElement, true);
};
private _handleBlur = () => {
this._hideCallout(true);
};
private _handleMouseOver = (mouseEvent: React.MouseEvent<SVGElement>, hoveredElement: string) => {
this._showCallout(mouseEvent.target, hoveredElement, false);
};
private _handleMouseOut = () => {
this._hideCallout(false);
};
private _handleCalloutDismiss = () => {
this._hideCallout(false);
};
// eslint-disable-next-line @typescript-eslint/no-explicit-any
private _showCallout = (target: any, legend: string, isFocusEvent: boolean) => {
if (this._calloutAnchor === legend) {
return;
}
this._calloutAnchor = legend;
const hoverXValue: string =
'Current value is ' +
getChartValueLabel(this.props.chartValue, this._minValue, this._maxValue, this.props.chartValueFormat, true);
const hoverYValues: IYValue[] = this._segments.map(segment => {
const yValue: IYValue = {
legend: segment.legend,
y: getSegmentLabel(segment, this._minValue, this._maxValue, this.props.variant),
color: segment.color,
};
return yValue;
});
this.setState({
calloutTarget: target,
/** Show the callout if highlighted arc is hovered/focused and Hide it if unhighlighted arc is hovered/focused */
isCalloutVisible:
['Needle', 'Chart value'].includes(legend) ||
this.state.selectedLegend === '' ||
this.state.selectedLegend === legend,
hoverXValue,
hoverYValues,
...(isFocusEvent ? { focusedElement: legend } : {}),
});
};
private _hideCallout = (isBlurEvent?: boolean) => {
this._calloutAnchor = '';
this.setState({
calloutTarget: null,
isCalloutVisible: false,
hoverXValue: '',
hoverYValues: [],
...(isBlurEvent ? { focusedElement: '' } : {}),
});
};
private _wrapContent = (content: string, id: string, maxWidth: number) => {
const textElement = d3Select<SVGTextElement, {}>(`#${id}`);
textElement.text(content);
if (!textElement.node()) {
return false;
}
let isOverflowing = false;
let textLength = textElement.node()!.getComputedTextLength();
while (textLength > maxWidth && content.length > 0) {
content = content.slice(0, -1);
textElement.text(content + '...');
isOverflowing = true;
textLength = textElement.node()!.getComputedTextLength();
}
return isOverflowing;
};
// TO DO: Write a common functional component for Multi value callout and divide sub count method
// eslint-disable-next-line @typescript-eslint/no-explicit-any
private _multiValueCallout = (calloutProps: any) => {
const yValueHoverSubCountsExists: boolean = this._yValueHoverSubCountsExists(calloutProps.YValueHover);
return (
<div className={this._classNames.calloutContentRoot}>
<div
className={this._classNames.calloutDateTimeContainer}
style={yValueHoverSubCountsExists ? { marginBottom: '11px' } : {}}
>
<div
className={this._classNames.calloutContentX}
{...getAccessibleDataObject(calloutProps!.xAxisCalloutAccessibilityData, 'text', false)}
>
{convertToLocaleString(calloutProps!.hoverXValue, this.props.culture)}
</div>
</div>
<div
className={this._classNames.calloutInfoContainer}
style={yValueHoverSubCountsExists ? { display: 'flex' } : {}}
>
{calloutProps!.YValueHover &&
calloutProps!.YValueHover.map((yValue: IYValueHover, index: number, yValues: IYValueHover[]) => {
const isLast: boolean = index + 1 === yValues.length;
const { shouldDrawBorderBottom = false } = yValue;
return (
<div
{...getAccessibleDataObject(yValue.callOutAccessibilityData, 'text', false)}
key={`callout-content-${index}`}
style={
yValueHoverSubCountsExists
? {
display: 'inline-block',
...(shouldDrawBorderBottom && {
borderBottom: `1px solid ${this.props.theme!.semanticColors.menuDivider}`,
paddingBottom: '10px',
}),
}
: {
...(shouldDrawBorderBottom && {
borderBottom: `1px solid ${this.props.theme!.semanticColors.menuDivider}`,
paddingBottom: '10px',
}),
}
}
>
{this._getCalloutContent(yValue, index, yValueHoverSubCountsExists, isLast)}
</div>
);
})}
{!!calloutProps.descriptionMessage && (
<div className={this._classNames.descriptionMessage}>{calloutProps.descriptionMessage}</div>
)}
</div>
</div>
);
};
private _yValueHoverSubCountsExists(yValueHover?: IYValueHover[]) {
if (yValueHover) {
return yValueHover.some(
(yValue: {
legend?: string;
y?: number;
color?: string;
yAxisCalloutData?: string | { [id: string]: number };
}) => yValue.yAxisCalloutData && typeof yValue.yAxisCalloutData !== 'string',
);
}
return false;
}
private _getCalloutContent(
xValue: IYValueHover,
index: number,
yValueHoverSubCountsExists: boolean,
isLast: boolean,
): React.ReactNode {
const marginStyle: React.CSSProperties = isLast ? {} : { marginRight: '16px' };
const toDrawShape = xValue.index !== undefined && xValue.index !== -1;
const _classNames = getClassNames(this.props.styles!, {
theme: this.props.theme!,
lineColor: xValue.color,
toDrawShape,
});
const { culture } = this.props;
const yValue = convertToLocaleString(xValue.y, culture);
if (!xValue.yAxisCalloutData || typeof xValue.yAxisCalloutData === 'string') {
return (
<div style={yValueHoverSubCountsExists ? marginStyle : {}}>
{yValueHoverSubCountsExists && (
<div className="ms-fontWeight-semibold" style={{ fontSize: '12pt' }}>
{xValue.legend!} ({yValue})
</div>
)}
<div id={`${index}_${xValue.y}`} className={_classNames.calloutBlockContainer}>
{toDrawShape && (
<Shape
svgProps={{
className: _classNames.shapeStyles,
}}
pathProps={{ fill: xValue.color }}
shape={Points[xValue.index! % Object.keys(pointTypes).length] as LegendShape}
/>
)}
<div>
<div className={_classNames.calloutlegendText}> {xValue.legend}</div>
<div className={_classNames.calloutContentY}>
{convertToLocaleString(
xValue.yAxisCalloutData ? xValue.yAxisCalloutData : xValue.y || xValue.data,
culture,
)}
</div>
</div>
</div>
</div>
);
} else E{
const subcounts: { [id: string]: number } = xValue.yAxisCalloutData as { [id: string]: number };
return (
<div style={marginStyle}>
<div className="ms-fontWeight-semibold" style={{ fontSize: '12pt' }}>
{xValue.legend!} ({yValue})
</div>
{Object.keys(subcounts).map((subcountName: string) => {
return (
<div key={subcountName} className={_classNames.calloutBlockContainer}>
<div className={_classNames.calloutlegendText}> {convertToLocaleString(subcountName, culture)}</div>
<div className={_classNames.calloutContentY}>
{convertToLocaleString(subcounts[subcountName], culture)}
</div>
</div>
);
})}
</div>
);
}
}
}
|