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import { computed, action, observable } from "mobx"
import { observer } from "mobx-react"
import { uniq, makeSafeForCSS } from "../../clientUtils/Util"
import { Bounds } from "../../clientUtils/Bounds"
import {
VerticalAxisComponent,
AxisTickMarks,
VerticalAxisGridLines,
} from "../axis/AxisViews"
import { NoDataModal } from "../noDataModal/NoDataModal"
import { Text } from "../text/Text"
import {
VerticalColorLegend,
VerticalColorLegendManager,
LegendItem,
} from "../verticalColorLegend/VerticalColorLegend"
import { Tooltip } from "../tooltip/Tooltip"
import { BASE_FONT_SIZE } from "../core/GrapherConstants"
import { ColorScaleManager } from "../color/ColorScale"
import {
AbstactStackedChart,
AbstactStackedChartProps,
} from "./AbstractStackedChart"
import { StackedPoint, StackedSeries } from "./StackedConstants"
import { VerticalAxis } from "../axis/Axis"
import { ColorSchemeName } from "../color/ColorConstants"
import { stackSeries, withMissingValuesAsZeroes } from "./StackedUtils"
import { makeClipPath } from "../chart/ChartUtils"
import { Time } from "../../clientUtils/owidTypes"
import { ColorScaleConfigDefaults } from "../color/ColorScaleConfig"
interface StackedBarSegmentProps extends React.SVGAttributes<SVGGElement> {
bar: StackedPoint<Time>
series: StackedSeries<Time>
color: string
opacity: number
yAxis: VerticalAxis
xOffset: number
barWidth: number
onBarMouseOver: (
bar: StackedPoint<Time>,
series: StackedSeries<Time>
) => void
onBarMouseLeave: () => void
}
@observer
class StackedBarSegment extends React.Component<StackedBarSegmentProps> {
base: React.RefObject<SVGRectElement> = React.createRef()
@observable mouseOver: boolean = false
@computed get yPos(): number {
const { bar, yAxis } = this.props
return yAxis.place(bar.value + bar.valueOffset)
}
@computed get barHeight(): number {
const { bar, yAxis } = this.props
return yAxis.place(bar.valueOffset) - this.yPos
}
@computed get trueOpacity(): number {
return this.mouseOver ? 1 : this.props.opacity
}
@action.bound onBarMouseOver(): void {
this.mouseOver = true
this.props.onBarMouseOver(this.props.bar, this.props.series)
}
@action.bound onBarMouseLeave(): void {
this.mouseOver = false
this.props.onBarMouseLeave()
}
render(): JSX.Element {
const { color, xOffset, barWidth } = this.props
const { yPos, barHeight, trueOpacity } = this
return (
<rect
ref={this.base}
x={xOffset}
y={yPos}
width={barWidth}
height={barHeight}
fill={color}
opacity={trueOpacity}
onMouseOver={this.onBarMouseOver}
onMouseLeave={this.onBarMouseLeave}
/>
)
}
}
@observer
export class StackedBarChart
extends AbstactStackedChart
implements VerticalColorLegendManager, ColorScaleManager
{
readonly minBarSpacing = 4
constructor(props: AbstactStackedChartProps) {
super(props)
}
// currently hovered legend color
@observable hoverColor?: string
// current hovered individual bar
@observable hoverBar?: StackedPoint<Time>
@observable hoverSeries?: StackedSeries<Time>
@computed private get baseFontSize(): number {
return this.manager.baseFontSize ?? BASE_FONT_SIZE
}
@computed get tickFontSize(): number {
return 0.9 * this.baseFontSize
}
@computed get barWidth(): number {
const { dualAxis } = this
return (0.8 * dualAxis.innerBounds.width) / this.xValues.length
}
@computed get barSpacing(): number {
return (
this.dualAxis.innerBounds.width / this.xValues.length -
this.barWidth
)
}
@computed get barFontSize(): number {
return 0.75 * this.baseFontSize
}
@computed protected get paddingForLegend(): number {
return this.sidebarWidth + 20
}
// All currently hovered group keys, combining the legend and the main UI
@computed get hoverKeys(): string[] {
const { hoverColor } = this
const hoverKeys =
hoverColor === undefined
? []
: uniq(
this.series
.filter((g) => g.color === hoverColor)
.map((g) => g.seriesName)
)
return hoverKeys
}
@computed get activeColors(): string[] {
const { hoverKeys } = this
const activeKeys = hoverKeys.length > 0 ? hoverKeys : []
if (!activeKeys.length)
// No hover 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)
)
}
@computed get legendItems(): LegendItem[] {
return this.series
.map((series) => {
return {
label: series.seriesName,
color: series.color,
}
})
.reverse() // Vertical legend orders things in the opposite direction we want
}
@computed get maxLegendWidth(): number {
return this.sidebarMaxWidth
}
@computed get sidebarMaxWidth(): number {
return this.bounds.width / 5
}
@computed get sidebarMinWidth(): number {
return 100
}
@computed get sidebarWidth(): number {
if (this.manager.hideLegend) return 0
const { sidebarMinWidth, sidebarMaxWidth, legendDimensions } = this
return Math.max(
Math.min(legendDimensions.width, sidebarMaxWidth),
sidebarMinWidth
)
}
@computed private get legendDimensions(): VerticalColorLegend {
return new VerticalColorLegend({ manager: this })
}
@computed get tooltip(): JSX.Element | undefined {
const {
hoverBar,
mapXValueToOffset,
barWidth,
dualAxis,
yColumns,
inputTable,
hoverSeries,
} = this
if (hoverBar === undefined) return
const xPos = mapXValueToOffset.get(hoverBar.position)
if (xPos === undefined) return
const yPos = dualAxis.verticalAxis.place(
hoverBar.valueOffset + hoverBar.value
)
const yColumn = yColumns[0] // we can just use the first column for formatting, b/c we assume all columns have same type
return (
<Tooltip
tooltipManager={this.props.manager}
x={xPos + barWidth}
y={yPos}
style={{ textAlign: "center" }}
>
<h3
style={{
padding: "0.3em 0.9em",
margin: 0,
backgroundColor: "#fcfcfc",
borderBottom: "1px solid #ebebeb",
fontWeight: "normal",
fontSize: "1em",
}}
>
{hoverSeries?.seriesName}
</h3>
<p
style={{
margin: 0,
padding: "0.3em 0.9em",
fontSize: "0.8em",
}}
>
<span>{yColumn.formatValueLong(hoverBar.value)}</span>
<br />
in
<br />
<span>
{inputTable.timeColumnFormatFunction(hoverBar.position)}
</span>
</p>
</Tooltip>
)
}
@computed get mapXValueToOffset(): Map<number, number> {
const { dualAxis, barWidth, barSpacing } = this
const xValueToOffset = new Map<number, number>()
let xOffset = dualAxis.innerBounds.left + barSpacing
for (let i = 0; i < this.xValues.length; i++) {
xValueToOffset.set(this.xValues[i], xOffset)
xOffset += barWidth + barSpacing
}
return xValueToOffset
}
// Place ticks centered beneath the bars, before doing overlap detection
@computed private get tickPlacements() {
const { mapXValueToOffset, barWidth, dualAxis } = this
const { xValues } = this
const { horizontalAxis } = dualAxis
return xValues.map((x) => {
const text = horizontalAxis.formatTick(x)
const xPos = mapXValueToOffset.get(x) as number
const bounds = Bounds.forText(text, { fontSize: this.tickFontSize })
return {
text,
bounds: bounds.set({
x: xPos + barWidth / 2 - bounds.width / 2,
y: dualAxis.innerBounds.bottom + 5,
}),
isHidden: false,
}
})
}
@computed get ticks() {
const { tickPlacements } = this
for (let i = 0; i < tickPlacements.length; i++) {
for (let j = 1; j < tickPlacements.length; j++) {
const t1 = tickPlacements[i],
t2 = tickPlacements[j]
if (t1 === t2 || t1.isHidden || t2.isHidden) continue
if (t1.bounds.intersects(t2.bounds.padWidth(-5))) {
if (i === 0) t2.isHidden = true
else if (j === tickPlacements.length - 1) t1.isHidden = true
else t2.isHidden = true
}
}
}
return tickPlacements.filter((t) => !t.isHidden)
}
@action.bound onLegendMouseOver(color: string): void {
this.hoverColor = color
}
@action.bound onLegendMouseLeave(): void {
this.hoverColor = undefined
}
@action.bound onLegendClick(): void {}
@action.bound onBarMouseOver(
bar: StackedPoint<Time>,
series: StackedSeries<Time>
): void {
this.hoverBar = bar
this.hoverSeries = series
}
@action.bound onBarMouseLeave(): void {
this.hoverBar = undefined
}
render(): JSX.Element {
if (this.failMessage)
return (
<NoDataModal
manager={this.manager}
bounds={this.bounds}
message={this.failMessage}
/>
)
const {
dualAxis,
renderUid,
bounds,
tooltip,
barWidth,
mapXValueToOffset,
ticks,
} = this
const { series } = this
const { innerBounds, verticalAxis } = dualAxis
const textColor = "#666"
const clipPath = makeClipPath(renderUid, innerBounds)
return (
<g
className="StackedBarChart"
width={bounds.width}
height={bounds.height}
>
{clipPath.element}
<rect
x={bounds.left}
y={bounds.top}
width={bounds.width}
height={bounds.height}
opacity={0}
fill="rgba(255,255,255,0)"
/>
<VerticalAxisComponent
bounds={bounds}
verticalAxis={verticalAxis}
/>
<VerticalAxisGridLines
verticalAxis={verticalAxis}
bounds={innerBounds}
/>
<AxisTickMarks
tickMarkTopPosition={innerBounds.bottom}
tickMarkXPositions={ticks.map(
(tick) => tick.bounds.centerX
)}
color={textColor}
/>
<g>
{ticks.map((tick, i) => {
return (
<Text
key={i}
x={tick.bounds.x}
y={tick.bounds.y}
fill={textColor}
fontSize={this.tickFontSize}
>
{tick.text}
</Text>
)
})}
</g>
<g clipPath={clipPath.id}>
{series.map((series, index) => {
const isLegendHovered = this.hoverKeys.includes(
series.seriesName
)
const opacity =
isLegendHovered || this.hoverKeys.length === 0
? 0.8
: 0.2
return (
<g
key={index}
className={
makeSafeForCSS(series.seriesName) +
"-segments"
}
>
{series.points.map((bar, index) => {
const xPos = mapXValueToOffset.get(
bar.position
) as number
const barOpacity =
bar === this.hoverBar ? 1 : opacity
return (
<StackedBarSegment
key={index}
bar={bar}
color={series.color}
xOffset={xPos}
opacity={barOpacity}
yAxis={verticalAxis}
series={series}
onBarMouseOver={this.onBarMouseOver}
onBarMouseLeave={
this.onBarMouseLeave
}
barWidth={barWidth}
/>
)
})}
</g>
)
})}
</g>
{!this.manager.hideLegend && (
<VerticalColorLegend manager={this} />
)}
{tooltip}
</g>
)
}
@computed get legendY(): number {
return this.bounds.top
}
@computed get legendX(): number {
return this.bounds.right - this.sidebarWidth
}
@computed private get xValues(): number[] {
return uniq(this.allStackedPoints.map((bar) => bar.position))
}
@computed get colorScaleConfig(): ColorScaleConfigDefaults | undefined {
return this.manager.colorScale
}
defaultBaseColorScheme = ColorSchemeName.stackedAreaDefault
@computed get series(): readonly StackedSeries<number>[] {
return stackSeries(withMissingValuesAsZeroes(this.unstackedSeries))
}
}
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