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import {
intersection,
without,
uniq,
isEmpty,
last,
sortBy,
max,
flatten,
getRelativeMouse,
domainExtent,
minBy,
maxBy,
exposeInstanceOnWindow,
} from "../../clientUtils/Util"
import { observable, computed, action } from "mobx"
import { observer } from "mobx-react"
import { Bounds, DEFAULT_BOUNDS } from "../../clientUtils/Bounds"
import { NoDataModal } from "../noDataModal/NoDataModal"
import {
VerticalColorLegend,
VerticalColorLegendManager,
} from "../verticalColorLegend/VerticalColorLegend"
import { ColorScale, ColorScaleManager } from "../color/ColorScale"
import {
BASE_FONT_SIZE,
ScaleType,
EntitySelectionMode,
SeriesName,
} from "../core/GrapherConstants"
import { ChartInterface } from "../chart/ChartInterface"
import { ChartManager } from "../chart/ChartManager"
import { scaleLinear, scaleLog, ScaleLinear, ScaleLogarithmic } from "d3-scale"
import { extent } from "d3-array"
import { select } from "d3-selection"
import { Text } from "../text/Text"
import { TextWrap } from "../text/TextWrap"
import {
DEFAULT_SLOPE_CHART_COLOR,
LabelledSlopesProps,
SlopeAxisProps,
SlopeChartSeries,
SlopeChartValue,
SlopeProps,
} from "./SlopeChartConstants"
import { CoreColumn } from "../../coreTable/CoreTableColumns"
import { OwidTable } from "../../coreTable/OwidTable"
import { Color } from "../../coreTable/CoreTableConstants"
import { autoDetectYColumnSlugs, makeSelectionArray } from "../chart/ChartUtils"
import { ColorSchemeName } from "../color/ColorConstants"
import { AxisConfig, FontSizeManager } from "../axis/AxisConfig"
@observer
export class SlopeChart
extends React.Component<{
bounds?: Bounds
manager: ChartManager
}>
implements ChartInterface, VerticalColorLegendManager, ColorScaleManager
{
// currently hovered individual series key
@observable hoverKey?: string
// currently hovered legend color
@observable hoverColor?: string
transformTable(table: OwidTable) {
if (!table.has(this.yColumnSlug)) return table
// TODO: remove this filter once we don't have mixed type columns in datasets
table = table.replaceNonNumericCellsWithErrorValues([this.yColumnSlug])
return table
.dropRowsWithErrorValuesForColumn(this.yColumnSlug)
.interpolateColumnWithTolerance(this.yColumnSlug)
}
@computed get manager() {
return this.props.manager
}
@computed.struct get bounds() {
return this.props.bounds ?? DEFAULT_BOUNDS
}
@computed get fontSize() {
return this.manager.baseFontSize ?? BASE_FONT_SIZE
}
@computed get legendItems() {
return this.colorScale.legendBins
.filter((bin) => this.colorsInUse.includes(bin.color))
.map((bin) => {
return {
key: bin.label ?? "",
label: bin.label ?? "",
color: bin.color,
}
})
}
@computed get maxLegendWidth() {
return this.sidebarMaxWidth
}
@action.bound onSlopeMouseOver(slopeProps: SlopeProps) {
this.hoverKey = slopeProps.seriesName
}
@action.bound onSlopeMouseLeave() {
this.hoverKey = undefined
}
@action.bound onSlopeClick() {
const { manager, hoverKey } = this
if (
manager.addCountryMode === EntitySelectionMode.Disabled ||
!manager.addCountryMode ||
hoverKey === undefined
) {
return
}
this.selectionArray.toggleSelection(hoverKey)
}
@action.bound onLegendMouseOver(color: string) {
this.hoverColor = color
}
@action.bound onLegendMouseLeave() {
this.hoverColor = undefined
}
@computed private get selectionArray() {
return makeSelectionArray(this.manager)
}
@computed private get selectedEntityNames() {
return this.selectionArray.selectedEntityNames
}
// When the color legend is clicked, toggle selection fo all associated keys
@action.bound onLegendClick() {
const { manager, hoverColor } = this
if (
manager.addCountryMode === EntitySelectionMode.Disabled ||
!manager.addCountryMode ||
hoverColor === undefined
)
return
const seriesNamesToToggle = this.series
.filter((g) => g.color === hoverColor)
.map((g) => g.seriesName)
const areAllSeriesActive =
intersection(seriesNamesToToggle, this.selectedEntityNames)
.length === seriesNamesToToggle.length
if (areAllSeriesActive)
this.selectionArray.setSelectedEntities(
without(this.selectedEntityNames, ...seriesNamesToToggle)
)
else
this.selectionArray.setSelectedEntities(
this.selectedEntityNames.concat(seriesNamesToToggle)
)
}
// Colors on the legend for which every matching group is focused
@computed get focusColors() {
const { colorsInUse } = this
return colorsInUse.filter((color) => {
const matchingSeriesNames = this.series
.filter((g) => g.color === color)
.map((g) => g.seriesName)
return (
intersection(matchingSeriesNames, this.selectedEntityNames)
.length === matchingSeriesNames.length
)
})
}
@computed get focusKeys() {
return this.selectedEntityNames
}
// All currently hovered group keys, combining the legend and the main UI
@computed.struct get hoverKeys() {
const { hoverColor, hoverKey } = this
const hoverKeys =
hoverColor === undefined
? []
: uniq(
this.series
.filter((g) => g.color === hoverColor)
.map((g) => g.seriesName)
)
if (hoverKey !== undefined) hoverKeys.push(hoverKey)
return hoverKeys
}
// Colors currently on the chart and not greyed out
@computed get activeColors() {
const { hoverKeys, focusKeys } = this
const activeKeys = hoverKeys.concat(focusKeys)
if (activeKeys.length === 0)
// No hover or focus means they're all active by default
return uniq(this.series.map((g) => g.color))
return uniq(
this.series
.filter((g) => activeKeys.indexOf(g.seriesName) !== -1)
.map((g) => g.color)
)
}
// Only show colors on legend that are actually in use
@computed private get colorsInUse() {
return uniq(this.series.map((series) => series.color))
}
@computed private get sidebarMaxWidth() {
return this.bounds.width * 0.5
}
private sidebarMinWidth = 100
@computed private get legendWidth() {
return new VerticalColorLegend({ manager: this }).width
}
@computed.struct private get sidebarWidth() {
const { sidebarMinWidth, sidebarMaxWidth, legendWidth } = this
return Math.max(Math.min(legendWidth, sidebarMaxWidth), sidebarMinWidth)
}
// correction is to account for the space taken by the legend
@computed private get innerBounds() {
const { sidebarWidth, showLegend } = this
return showLegend
? this.bounds.padRight(sidebarWidth + 20)
: this.bounds
}
// verify the validity of data used to show legend
// this is for backwards compatibility with charts that were added without legend
// eg: https://ourworldindata.org/grapher/mortality-rate-improvement-by-cohort
@computed private get showLegend() {
const { colorsInUse } = this
const { legendBins } = this.colorScale
return legendBins.some((bin) => colorsInUse.includes(bin.color))
}
render() {
if (this.failMessage)
return (
<NoDataModal
manager={this.manager}
bounds={this.props.bounds}
message={this.failMessage}
/>
)
const { manager } = this.props
const { series, focusKeys, hoverKeys, innerBounds, showLegend } = this
const legend = showLegend ? (
<VerticalColorLegend manager={this} />
) : (
<div></div>
)
return (
<g className="slopeChart">
<LabelledSlopes
manager={manager}
bounds={innerBounds}
yColumn={this.yColumn!}
seriesArr={series}
focusKeys={focusKeys}
hoverKeys={hoverKeys}
onMouseOver={this.onSlopeMouseOver}
onMouseLeave={this.onSlopeMouseLeave}
onClick={this.onSlopeClick}
/>
{legend}
</g>
)
}
@computed get legendY() {
return this.bounds.top
}
@computed get legendX(): number {
return this.bounds.right - this.sidebarWidth
}
@computed get failMessage() {
if (this.yColumn.isMissing) return "Missing Y column"
else if (isEmpty(this.series)) return "No matching data"
return ""
}
colorScale = new ColorScale(this)
@computed get colorScaleConfig() {
return this.manager.colorScale
}
@computed get colorScaleColumn() {
return this.colorColumn
}
defaultBaseColorScheme = ColorSchemeName.continents
@computed private get yColumn() {
return this.transformedTable.get(this.yColumnSlug)
}
@computed protected get yColumnSlug() {
return autoDetectYColumnSlugs(this.manager)[0]
}
@computed private get colorColumn() {
// NB: This is tricky. Often it seems we use the Continent variable (123) for colors, but we only have 1 year for that variable, which
// would likely get filtered by any time filtering. So we need to jump up to the root table to get the color values we want.
// We should probably refactor this as part of a bigger color refactoring.
return this.inputTable.get(this.manager.colorColumnSlug)
}
@computed get transformedTable() {
return (
this.manager.transformedTable ??
this.transformTable(this.inputTable)
)
}
@computed get inputTable() {
return this.manager.table
}
// helper method to directly get the associated color value given an Entity
// dimension data saves color a level deeper. eg: { Afghanistan => { 2015: Asia|Color }}
// this returns that data in the form { Afghanistan => Asia }
@computed private get colorBySeriesName(): Map<
SeriesName,
Color | undefined
> {
const { colorScale, colorColumn } = this
if (colorColumn.isMissing) return new Map()
const colorByEntity = new Map<SeriesName, Color | undefined>()
colorColumn.valueByEntityNameAndOriginalTime.forEach(
(timeToColorMap, seriesName) => {
const values = Array.from(timeToColorMap.values())
const key = last(values)
colorByEntity.set(seriesName, colorScale.getColor(key))
}
)
return colorByEntity
}
@computed private get sizeColumn() {
return this.transformedTable.get(this.manager.sizeColumnSlug)
}
// helper method to directly get the associated size value given an Entity
// dimension data saves size a level deeper. eg: { Afghanistan => { 1990: 1, 2015: 10 }}
// this returns that data in the form { Afghanistan => 1 }
@computed private get sizeByEntity(): Map<string, any> {
const sizeCol = this.sizeColumn
const sizeByEntity = new Map<string, any>()
if (sizeCol)
sizeCol.valueByEntityNameAndOriginalTime.forEach(
(timeToSizeMap, entity) => {
const values = Array.from(timeToSizeMap.values())
sizeByEntity.set(entity, values[0]) // hack: default to the value associated with the first time
}
)
return sizeByEntity
}
componentDidMount() {
exposeInstanceOnWindow(this)
}
@computed get series() {
const column = this.yColumn
if (!column) return []
const { colorBySeriesName, sizeByEntity } = this
const { minTime, maxTime } = column
const table = this.inputTable
return column.uniqEntityNames
.map((seriesName) => {
const values: SlopeChartValue[] = []
const yValues =
column.valueByEntityNameAndOriginalTime.get(seriesName)! ||
[]
yValues.forEach((value, time) => {
if (time !== minTime && time !== maxTime) return
values.push({
x: time,
y: value,
})
})
const color =
table.getColorForEntityName(seriesName) ??
colorBySeriesName.get(seriesName) ??
DEFAULT_SLOPE_CHART_COLOR
return {
seriesName,
color,
size: sizeByEntity.get(seriesName) || 1,
values,
} as SlopeChartSeries
})
.filter((series) => series.values.length >= 2)
}
}
@observer
class SlopeChartAxis extends React.Component<SlopeAxisProps> {
static calculateBounds(
containerBounds: Bounds,
props: {
column: CoreColumn
orient: "left" | "right"
scale: ScaleLinear<number, number>
}
) {
const { scale, column } = props
const longestTick = maxBy(
scale.ticks(6).map((tick) => column.formatValueShort(tick)),
(tick) => tick.length
)
const axisWidth = Bounds.forText(longestTick).width
return new Bounds(
containerBounds.x,
containerBounds.y,
axisWidth,
containerBounds.height
)
}
static getTicks(
scale: ScaleLinear<number, number> | ScaleLogarithmic<number, number>,
scaleType: ScaleType
) {
if (scaleType === ScaleType.log) {
let minPower10 = Math.ceil(
Math.log(scale.domain()[0]) / Math.log(10)
)
if (!isFinite(minPower10)) minPower10 = 0
let maxPower10 = Math.floor(
Math.log(scale.domain()[1]) / Math.log(10)
)
if (maxPower10 <= minPower10) maxPower10 += 1
const tickValues = []
for (let i = minPower10; i <= maxPower10; i++) {
tickValues.push(Math.pow(10, i))
}
return tickValues
} else {
return scale.ticks(6)
}
}
@computed get ticks() {
return SlopeChartAxis.getTicks(this.props.scale, this.props.scaleType)
}
render() {
const { bounds, scale, orient, column } = this.props
const { ticks } = this
const textColor = "#666"
return (
<g className="axis" fontSize="0.8em">
{ticks.map((tick, i) => {
return (
<text
key={i}
x={orient === "left" ? bounds.left : bounds.right}
y={scale(tick)}
fill={textColor}
dominantBaseline="middle"
textAnchor={orient === "left" ? "start" : "end"}
>
{column.formatValueShort(tick)}
</text>
)
})}
</g>
)
}
}
@observer
class Slope extends React.Component<SlopeProps> {
line: SVGElement | null = null
@computed get isInBackground() {
const { isLayerMode, isHovered, isFocused } = this.props
if (!isLayerMode) return false
return !(isHovered || isFocused)
}
render() {
const {
x1,
y1,
x2,
y2,
color,
size,
hasLeftLabel,
hasRightLabel,
leftValueStr,
rightValueStr,
leftLabel,
rightLabel,
labelFontSize,
leftLabelBounds,
rightLabelBounds,
isFocused,
isHovered,
} = this.props
const { isInBackground } = this
const lineColor = isInBackground ? "#e2e2e2" : color //'#89C9CF'
const labelColor = isInBackground ? "#aaa" : "#333"
const opacity = isHovered ? 1 : isFocused ? 0.7 : 0.5
const lineStrokeWidth = isHovered
? size * 2
: isFocused
? 1.5 * size
: size
const leftValueLabelBounds = Bounds.forText(leftValueStr, {
fontSize: labelFontSize,
})
const rightValueLabelBounds = Bounds.forText(rightValueStr, {
fontSize: labelFontSize,
})
return (
<g className="slope">
{hasLeftLabel &&
leftLabel.render(
leftLabelBounds.x + leftLabelBounds.width,
leftLabelBounds.y,
{
textAnchor: "end",
fill: labelColor,
fontWeight:
isFocused || isHovered ? "bold" : undefined,
}
)}
{hasLeftLabel && (
<Text
x={x1 - 8}
y={y1 - leftValueLabelBounds.height / 2}
textAnchor="end"
fontSize={labelFontSize}
fill={labelColor}
fontWeight={isFocused || isHovered ? "bold" : undefined}
>
{leftValueStr}
</Text>
)}
<circle
cx={x1}
cy={y1}
r={isFocused || isHovered ? 4 : 2}
fill={lineColor}
opacity={opacity}
/>
<line
ref={(el) => (this.line = el)}
x1={x1}
y1={y1}
x2={x2}
y2={y2}
stroke={lineColor}
strokeWidth={lineStrokeWidth}
opacity={opacity}
/>
<circle
cx={x2}
cy={y2}
r={isFocused || isHovered ? 4 : 2}
fill={lineColor}
opacity={opacity}
/>
{hasRightLabel && (
<Text
x={x2 + 8}
y={y2 - rightValueLabelBounds.height / 2}
fontSize={labelFontSize}
fill={labelColor}
fontWeight={isFocused || isHovered ? "bold" : undefined}
>
{rightValueStr}
</Text>
)}
{hasRightLabel &&
rightLabel.render(rightLabelBounds.x, rightLabelBounds.y, {
fill: labelColor,
fontWeight: isFocused || isHovered ? "bold" : undefined,
})}
</g>
)
}
}
@observer
class LabelledSlopes
extends React.Component<LabelledSlopesProps>
implements FontSizeManager
{
base: React.RefObject<SVGGElement> = React.createRef()
@computed private get data() {
return this.props.seriesArr
}
@computed private get yColumn() {
return this.props.yColumn
}
@computed private get manager() {
return this.props.manager
}
@computed private get bounds() {
return this.props.bounds
}
@computed get fontSize() {
return this.manager.baseFontSize ?? BASE_FONT_SIZE
}
@computed private get focusedSeriesNames() {
return intersection(
this.props.focusKeys || [],
this.data.map((g) => g.seriesName)
)
}
@computed private get hoveredSeriesNames() {
return intersection(
this.props.hoverKeys || [],
this.data.map((g) => g.seriesName)
)
}
// Layered mode occurs when any entity on the chart is hovered or focused
// Then, a special "foreground" set of entities is rendered over the background
@computed private get isLayerMode() {
return (
this.focusedSeriesNames.length > 0 ||
this.hoveredSeriesNames.length > 0
)
}
@computed private get isPortrait() {
return this.bounds.width < 400
}
@computed private get allValues() {
return flatten(this.props.seriesArr.map((g) => g.values))
}
@computed private get xDomainDefault(): [number, number] {
return domainExtent(
this.allValues.map((v) => v.x),
ScaleType.linear
)
}
@computed private get yAxisConfig(): AxisConfig {
return new AxisConfig(this.manager.yAxisConfig, this)
}
@computed private get yScaleType() {
return this.yAxisConfig.scaleType || ScaleType.linear
}
@computed private get yDomainDefault(): [number, number] {
return domainExtent(
this.allValues.map((v) => v.y),
this.yScaleType || ScaleType.linear
)
}
@computed private get xDomain(): [number, number] {
return this.xDomainDefault
}
@computed private get yDomain(): [number, number] {
const domain = this.yAxisConfig.domain || [Infinity, -Infinity]
const domainDefault = this.yDomainDefault
return [
Math.min(domain[0], domainDefault[0]),
Math.max(domain[1], domainDefault[1]),
]
}
@computed get sizeScale(): ScaleLinear<number, number> {
return scaleLinear()
.domain(
extent(this.props.seriesArr.map((series) => series.size)) as [
number,
number
]
)
.range([1, 4])
}
@computed get yScaleConstructor(): any {
return this.yScaleType === ScaleType.log ? scaleLog : scaleLinear
}
@computed private get yScale():
| ScaleLinear<number, number>
| ScaleLogarithmic<number, number> {
return this.yScaleConstructor()
.domain(this.yDomain)
.range(this.props.bounds.padBottom(50).yRange())
}
@computed private get xScale(): ScaleLinear<number, number> {
const { bounds, isPortrait, xDomain, yScale, yColumn } = this
const padding = isPortrait
? 0
: SlopeChartAxis.calculateBounds(bounds, {
orient: "left",
scale: yScale,
column: yColumn,
}).width
return scaleLinear()
.domain(xDomain)
.range(bounds.padWidth(padding).xRange())
}
@computed get maxLabelWidth() {
return this.bounds.width / 5
}
@computed private get initialSlopeData() {
const {
data,
isPortrait,
xScale,
yScale,
sizeScale,
yColumn,
maxLabelWidth: maxWidth,
} = this
const slopeData: SlopeProps[] = []
const yDomain = yScale.domain()
data.forEach((series) => {
// Ensure values fit inside the chart
if (
!series.values.every(
(d) => d.y >= yDomain[0] && d.y <= yDomain[1]
)
)
return
const text = series.seriesName
const [v1, v2] = series.values
const [x1, x2] = [xScale(v1.x), xScale(v2.x)]
const [y1, y2] = [yScale(v1.y), yScale(v2.y)]
const fontSize = (isPortrait ? 0.6 : 0.65) * this.fontSize
const leftValueStr = yColumn.formatValueShort(v1.y)
const rightValueStr = yColumn.formatValueShort(v2.y)
const leftValueWidth = Bounds.forText(leftValueStr, {
fontSize,
}).width
const rightValueWidth = Bounds.forText(rightValueStr, {
fontSize,
}).width
const leftLabel = new TextWrap({
maxWidth,
fontSize,
text,
})
const rightLabel = new TextWrap({
maxWidth,
fontSize,
text,
})
slopeData.push({
x1,
y1,
x2,
y2,
color: series.color,
size: sizeScale(series.size) || 1,
leftValueStr,
rightValueStr,
leftValueWidth,
rightValueWidth,
leftLabel,
rightLabel,
labelFontSize: fontSize,
seriesName: series.seriesName,
isFocused: false,
isHovered: false,
hasLeftLabel: true,
hasRightLabel: true,
} as SlopeProps)
})
return slopeData
}
@computed get maxValueWidth() {
return max(this.initialSlopeData.map((s) => s.leftValueWidth)) as number
}
@computed private get labelAccountedSlopeData() {
const { maxLabelWidth, maxValueWidth } = this
return this.initialSlopeData.map((slope) => {
// Squish slopes to make room for labels
const x1 = slope.x1 + maxLabelWidth + maxValueWidth + 8
const x2 = slope.x2 - maxLabelWidth - maxValueWidth - 8
// Position the labels
const leftLabelBounds = new Bounds(
x1 - slope.leftValueWidth - 12 - slope.leftLabel.width,
slope.y1 - slope.leftLabel.height / 2,
slope.leftLabel.width,
slope.leftLabel.height
)
const rightLabelBounds = new Bounds(
x2 + slope.rightValueWidth + 12,
slope.y2 - slope.rightLabel.height / 2,
slope.rightLabel.width,
slope.rightLabel.height
)
return {
...slope,
x1: x1,
x2: x2,
leftLabelBounds: leftLabelBounds,
rightLabelBounds: rightLabelBounds,
}
})
}
@computed get backgroundGroups() {
return this.slopeData.filter(
(group) => !(group.isHovered || group.isFocused)
)
}
@computed get foregroundGroups() {
return this.slopeData.filter(
(group) => !!(group.isHovered || group.isFocused)
)
}
// Get the final slope data with hover focusing and collision detection
@computed get slopeData(): SlopeProps[] {
const { focusedSeriesNames, hoveredSeriesNames } = this
let slopeData = this.labelAccountedSlopeData
slopeData = slopeData.map((slope) => {
return {
...slope,
isFocused: focusedSeriesNames.includes(slope.seriesName),
isHovered: hoveredSeriesNames.includes(slope.seriesName),
}
})
// How to work out which of two slopes to prioritize for labelling conflicts
function chooseLabel(s1: SlopeProps, s2: SlopeProps) {
if (s1.isHovered && !s2.isHovered)
// Hovered slopes always have priority
return s1
else if (!s1.isHovered && s2.isHovered) return s2
else if (s1.isFocused && !s2.isFocused)
// Focused slopes are next in priority
return s1
else if (!s1.isFocused && s2.isFocused) return s2
else if (s1.hasLeftLabel && !s2.hasLeftLabel)
// Slopes which already have one label are prioritized for the other side
return s1
else if (!s1.hasLeftLabel && s2.hasLeftLabel) return s2
else if (s1.size > s2.size)
// Larger sizes get the next priority
return s1
else if (s2.size > s1.size) return s2
else return s1 // Equal priority, just do the first one
}
// Eliminate overlapping labels, one pass for each side
slopeData.forEach((s1) => {
slopeData.forEach((s2) => {
if (
s1 !== s2 &&
s1.hasLeftLabel &&
s2.hasLeftLabel &&
s1.leftLabelBounds.intersects(s2.leftLabelBounds)
) {
if (chooseLabel(s1, s2) === s1) s2.hasLeftLabel = false
else s1.hasLeftLabel = false
}
})
})
slopeData.forEach((s1) => {
slopeData.forEach((s2) => {
if (
s1 !== s2 &&
s1.hasRightLabel &&
s2.hasRightLabel &&
s1.rightLabelBounds.intersects(s2.rightLabelBounds)
) {
if (chooseLabel(s1, s2) === s1) s2.hasRightLabel = false
else s1.hasRightLabel = false
}
})
})
// Order by focus/hover and size for draw order
slopeData = sortBy(slopeData, (slope) => slope.size)
slopeData = sortBy(slopeData, (slope) =>
slope.isFocused || slope.isHovered ? 1 : 0
)
return slopeData
}
mouseFrame?: number
@action.bound onMouseLeave() {
if (this.mouseFrame !== undefined) cancelAnimationFrame(this.mouseFrame)
if (this.props.onMouseLeave) this.props.onMouseLeave()
}
@action.bound onMouseMove(
ev: React.MouseEvent<SVGGElement> | React.TouchEvent<SVGGElement>
) {
if (this.base.current) {
const mouse = getRelativeMouse(this.base.current, ev.nativeEvent)
this.mouseFrame = requestAnimationFrame(() => {
if (this.props.bounds.contains(mouse)) {
const distToSlope = new Map<SlopeProps, number>()
for (const s of this.slopeData) {
const dist =
Math.abs(
(s.y2 - s.y1) * mouse.x -
(s.x2 - s.x1) * mouse.y +
s.x2 * s.y1 -
s.y2 * s.x1
) /
Math.sqrt((s.y2 - s.y1) ** 2 + (s.x2 - s.x1) ** 2)
distToSlope.set(s, dist)
}
const closestSlope = minBy(this.slopeData, (s) =>
distToSlope.get(s)
)
if (
closestSlope &&
(distToSlope.get(closestSlope) as number) < 20 &&
this.props.onMouseOver
) {
this.props.onMouseOver(closestSlope)
} else {
this.props.onMouseLeave()
}
}
})
}
}
@action.bound onClick() {
if (this.props.onClick) this.props.onClick()
}
componentDidMount() {
this.playIntroAnimation()
}
private playIntroAnimation() {
// Nice little intro animation
select(this.base.current)
.select(".slopes")
.attr("stroke-dasharray", "100%")
.attr("stroke-dashoffset", "100%")
.transition()
.attr("stroke-dashoffset", "0%")
}
renderGroups(groups: SlopeProps[]) {
const { isLayerMode } = this
return groups.map((slope) => (
<Slope
key={slope.seriesName}
{...slope}
isLayerMode={isLayerMode}
/>
))
}
render() {
const {
fontSize,
yScaleType,
bounds,
slopeData,
isPortrait,
xDomain,
yScale,
onMouseMove,
yColumn,
} = this
if (isEmpty(slopeData))
return <NoDataModal manager={this.props.manager} bounds={bounds} />
const { x1, x2 } = slopeData[0]
const [y1, y2] = yScale.range()
return (
<g
className="LabelledSlopes"
ref={this.base}
onMouseMove={onMouseMove}
onTouchMove={onMouseMove}
onTouchStart={onMouseMove}
onMouseLeave={this.onMouseLeave}
onClick={this.onClick}
>
<rect
x={bounds.x}
y={bounds.y}
width={bounds.width}
height={bounds.height}
fill="rgba(255,255,255,0)"
opacity={0}
/>
<g className="gridlines">
{SlopeChartAxis.getTicks(yScale, yScaleType).map(
(tick, i) => {
return (
<line
key={i}
x1={x1}
y1={yScale(tick)}
x2={x2}
y2={yScale(tick)}
stroke="#eee"
strokeDasharray="3,2"
/>
)
}
)}
</g>
{!isPortrait && (
<SlopeChartAxis
orient="left"
column={yColumn}
scale={yScale}
scaleType={yScaleType}
bounds={bounds}
/>
)}
{!isPortrait && (
<SlopeChartAxis
orient="right"
column={yColumn}
scale={yScale}
scaleType={yScaleType}
bounds={bounds}
/>
)}
<line x1={x1} y1={y1} x2={x1} y2={y2} stroke="#333" />
<line x1={x2} y1={y1} x2={x2} y2={y2} stroke="#333" />
<Text
x={x1}
y={y1 + 10}
textAnchor="middle"
fill="#666"
fontSize={fontSize}
>
{xDomain[0].toString()}
</Text>
<Text
x={x2}
y={y1 + 10}
textAnchor="middle"
fill="#666"
fontSize={fontSize}
>
{xDomain[1].toString()}
</Text>
<g className="slopes">
{this.renderGroups(this.backgroundGroups)}
{this.renderGroups(this.foregroundGroups)}
</g>
</g>
)
}
}
|