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Completely reimplement tree charts with d3
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,185 @@ | ||
| import {arc as d3arc} from 'd3-shape' | ||
| import {create} from 'd3-selection' | ||
| import {hierarchy, partition} from 'd3-hierarchy' | ||
| import {schemePaired} from 'd3-scale-chromatic' | ||
|
|
||
| function defaultColor(d) { | ||
| if (d.depth === 0) { | ||
| return 'rgb(120, 120, 120)' | ||
| } | ||
| const ind = Math.min(Math.max(0, Math.floor((d.x0 / Math.PI / 2) * 8)), 8) | ||
| return schemePaired[ind] | ||
| } | ||
|
|
||
| export function FanChart( | ||
| data, | ||
| { | ||
| width = 600, // outer width, in pixels | ||
| height = 600, // outer height, in pixels | ||
| margin = 1, // shorthand for margins | ||
| marginTop = margin, // top margin, in pixels | ||
| marginRight = margin, // right margin, in pixels | ||
| marginBottom = margin, // bottom margin, in pixels | ||
| marginLeft = margin, // left margin, in pixels | ||
| padding = 3, // separation between arcs | ||
| color = defaultColor, | ||
| radius = Math.min( | ||
| width - marginLeft - marginRight, | ||
| height - marginTop - marginBottom | ||
| ) / 2, // outer radius | ||
| } = {} | ||
| ) { | ||
| // Create a hierarchical data structure based on the input data | ||
| const root = hierarchy(data) | ||
|
|
||
| // Compute the value of each node in the hierarchy | ||
| root.count() | ||
|
|
||
| // Create a partition layout and apply it to the root node to produce a radial layout | ||
| // (polar coordinates: x is angle, y is radius) | ||
| partition().size([2 * Math.PI, radius])(root) | ||
|
|
||
| // Construct an arc generator | ||
| const arc = d3arc() | ||
| .startAngle(d => d.x0 - Math.PI / 2) // shifted by 90° | ||
| .endAngle(d => d.x1 - Math.PI / 2) // shifted by 90° | ||
| .padAngle(d => Math.min((d.x1 - d.x0) / 2, (2 * padding) / radius)) | ||
| .padRadius(radius / 2) | ||
| .innerRadius(d => d.y0) | ||
| .outerRadius(d => d.y1 - padding) | ||
|
|
||
| // Construct an arc generator | ||
| const arcStroke = d3arc() | ||
| .startAngle(d => d.x0 - Math.PI / 2) // shifted by 90° | ||
| .endAngle(d => d.x1 - Math.PI / 2) // shifted by 90° | ||
| .padAngle(d => Math.min((d.x1 - d.x0) / 2, (2 * padding) / radius)) | ||
| .padRadius(radius / 2) | ||
| .innerRadius(d => d.y0) | ||
| .outerRadius(d => d.y0 + 3) | ||
|
|
||
| const svg = create('svg') | ||
| .attr('viewBox', [ | ||
| marginRight - marginLeft - width / 2, | ||
| marginBottom - marginTop - height / 2, | ||
| width, | ||
| height, | ||
| ]) | ||
| .attr('width', width) | ||
| .attr('height', height) | ||
| .attr('style', 'max-width: 100%; height: auto; height: intrinsic;') | ||
| .attr('font-family', 'Inter var') | ||
| .attr('font-size', 12) | ||
| .attr('text-anchor', 'middle') | ||
|
|
||
| const cell = svg.selectAll('a').data(root.descendants()).join('a') | ||
|
|
||
| function arcVisible(d) { | ||
| return d.name_given !== null | ||
| } | ||
|
|
||
| cell | ||
| .filter(d => arcVisible(d.data)) | ||
| .append('path') | ||
| .attr('d', arc) | ||
| .attr('fill', d => (color === null ? 'rgb(150, 150, 150)' : color(d))) | ||
| .attr('fill-opacity', 0.2) | ||
| .attr('id', d => d.data.id) // Unique id for each slice | ||
|
|
||
| cell | ||
| .filter(d => d.depth > 0) | ||
| .filter(d => arcVisible(d.data)) | ||
| .append('path') | ||
| .attr('d', arcStroke) | ||
| .attr('fill', d => | ||
| d.data.id.slice(-1) === 'm' ? 'var(--color-girl)' : 'var(--color-boy)' | ||
| ) | ||
|
|
||
| function clicked(event, d) { | ||
| dispatchEvent( | ||
| new CustomEvent('pedigree:person-selected', { | ||
| bubbles: true, | ||
| composed: true, | ||
| detail: {grampsId: d.data?.person?.gramps_id}, | ||
| }) | ||
| ) | ||
| } | ||
|
|
||
| cell | ||
| .filter(d => arcVisible(d.data)) | ||
| .style('cursor', 'pointer') | ||
| .on('click', clicked) | ||
|
|
||
| const fontSize = d => Math.min(12, (((d.y0 + d.y1) / 2) * (d.x1 - d.x0)) / 10) | ||
|
|
||
| const clipString = (s, d, isCenter = false) => { | ||
| const length = isCenter | ||
| ? 2 * d.y1 | ||
| : ((d.x1 - d.x0) * (d.y1 + d.y0)) / 2 - padding | ||
| const nChar = length / (fontSize(d) * 0.6) | ||
| if (s.length <= nChar) { | ||
| return s | ||
| } | ||
| if (nChar < 2) { | ||
| return '' | ||
| } | ||
| return `${s.slice(0, nChar - 2)}…` | ||
| } | ||
|
|
||
| cell | ||
| .filter(d => d.depth === 0) | ||
| .append('text') | ||
| .attr('font-weight', '500') | ||
| .attr('dy', '-0.6em') | ||
| .text(d => clipString(d.data.name_surname, d, true)) | ||
|
|
||
| cell | ||
| .filter(d => d.depth === 0) | ||
| .append('text') | ||
| .attr('font-weight', '300') | ||
| .attr('dy', '0.6em') | ||
| .text(d => clipString(d.data.name_given, d, true)) | ||
|
|
||
| const startOffset = d => | ||
| d.x0 >= Math.PI | ||
| ? (d.y1 + d.y0 / 2) * (d.x1 - d.x0) + (d.y1 - d.y0) - 3.5 * padding | ||
| : (d.y1 * (d.x1 - d.x0)) / 2 - padding | ||
|
|
||
| cell | ||
| .filter(d => d.depth > 0) | ||
| .filter(d => ((d.y0 + d.y1) / 2) * (d.x1 - d.x0) > 50) | ||
| .append('text') | ||
| .attr('font-weight', '500') | ||
| .attr('font-size', fontSize) | ||
| .attr('dy', d => (d.y1 - d.y0) / 2 - 7 + 3) | ||
| // .attr("dx", (dx => 1) | ||
| .append('textPath') // append a textPath to the text element | ||
| .attr('xlink:href', d => `#${d.data.id}`) | ||
| .style('text-anchor', 'middle') | ||
| .attr('startOffset', startOffset) | ||
| .style('letter-spacing', d => | ||
| d.x0 < Math.PI ? `${(1 / d.y1) * 20}em` : `-${(1 / d.y1) * 10}em` | ||
| ) | ||
| .text(d => clipString(d.data.name_surname || '', d)) | ||
|
|
||
| cell | ||
| .filter(d => d.depth > 0) | ||
| .filter(d => ((d.y0 + d.y1) / 2) * (d.x1 - d.x0) > 50) | ||
| .append('text') | ||
| .attr('font-weight', '300') | ||
| .attr('font-size', fontSize) | ||
| .attr('dy', d => (d.y1 - d.y0) / 2 + 7 + 3) | ||
| // .attr("dx", (dx => 1) | ||
| .append('textPath') // append a textPath to the text element | ||
| .attr('xlink:href', d => `#${d.data.id}`) | ||
| .style('text-anchor', 'middle') | ||
| .attr('startOffset', startOffset) | ||
| .style('letter-spacing', d => | ||
| d.x0 < Math.PI ? `${(1 / d.y1) * 40}em` : `-${(1 / d.y1) * 15}em` | ||
| ) | ||
| .text( | ||
| d => clipString(d.data.name_given || '', d) | ||
| // .slice(0, Math.floor(d.y1 * (d.x1 - d.x0) / 10)) | ||
| ) | ||
|
|
||
| return svg.node() | ||
| } |
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