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Add mouseover display of read name to pileup
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93 changes: 4 additions & 89 deletions
93
plugins/linear-genome-view/src/BaseLinearDisplay/components/BaseLinearDisplay.tsx
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plugins/linear-genome-view/src/BaseLinearDisplay/components/Tooltip.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| import React, { useState, useMemo } from 'react' | ||
| import { getConf } from '@jbrowse/core/configuration' | ||
| import { observer } from 'mobx-react' | ||
| import { Portal, alpha, makeStyles } from '@material-ui/core' | ||
| import { usePopper } from 'react-popper' | ||
|
|
||
| // locals | ||
| import { BaseLinearDisplayModel } from '../models/BaseLinearDisplayModel' | ||
|
|
||
| function round(value: number) { | ||
| return Math.round(value * 1e5) / 1e5 | ||
| } | ||
| const useStyles = makeStyles(theme => ({ | ||
| // these styles come from | ||
| // https://github.com/mui-org/material-ui/blob/master/packages/material-ui/src/Tooltip/Tooltip.js | ||
| tooltip: { | ||
| pointerEvents: 'none', | ||
| backgroundColor: alpha(theme.palette.grey[700], 0.9), | ||
| borderRadius: theme.shape.borderRadius, | ||
| color: theme.palette.common.white, | ||
| fontFamily: theme.typography.fontFamily, | ||
| padding: '4px 8px', | ||
| fontSize: theme.typography.pxToRem(12), | ||
| lineHeight: `${round(14 / 10)}em`, | ||
| maxWidth: 300, | ||
| wordWrap: 'break-word', | ||
| }, | ||
| })) | ||
|
|
||
| const TooltipContents = React.forwardRef< | ||
| HTMLDivElement, | ||
| { message: React.ReactNode | string } | ||
| >(({ message }: { message: React.ReactNode | string }, ref) => { | ||
| return <div ref={ref}>{message}</div> | ||
| }) | ||
|
|
||
| type Coord = [number, number] | ||
| const Tooltip = observer( | ||
| ({ | ||
| model, | ||
| clientMouseCoord, | ||
| }: { | ||
| model: BaseLinearDisplayModel | ||
| clientMouseCoord: Coord | ||
| }) => { | ||
| const classes = useStyles() | ||
| const { featureUnderMouse } = model | ||
| const [width, setWidth] = useState(0) | ||
| const [popperElt, setPopperElt] = useState<HTMLDivElement | null>(null) | ||
|
|
||
| // must be memoized a la https://github.com/popperjs/react-popper/issues/391 | ||
| const virtElement = useMemo( | ||
| () => ({ | ||
| getBoundingClientRect: () => { | ||
| const x = clientMouseCoord[0] + width / 2 + 20 | ||
| const y = clientMouseCoord[1] | ||
| return { | ||
| top: y, | ||
| left: x, | ||
| bottom: y, | ||
| right: x, | ||
| width: 0, | ||
| height: 0, | ||
| x, | ||
| y, | ||
| toJSON() {}, | ||
| } | ||
| }, | ||
| }), | ||
| [clientMouseCoord, width], | ||
| ) | ||
| const { styles, attributes } = usePopper(virtElement, popperElt) | ||
|
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| const contents = featureUnderMouse | ||
| ? getConf(model, 'mouseover', { feature: featureUnderMouse }) | ||
| : undefined | ||
|
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| return featureUnderMouse && contents ? ( | ||
| <Portal> | ||
| <div | ||
| ref={setPopperElt} | ||
| className={classes.tooltip} | ||
| // zIndex needed to go over widget drawer | ||
| style={{ ...styles.popper, zIndex: 100000 }} | ||
| {...attributes.popper} | ||
| > | ||
| <TooltipContents | ||
| ref={elt => setWidth(elt?.getBoundingClientRect().width || 0)} | ||
| message={contents} | ||
| /> | ||
| </div> | ||
| </Portal> | ||
| ) : null | ||
| }, | ||
| ) | ||
|
|
||
| export default Tooltip |
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