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* chore(deps): update dependency prettier to v3 * Format --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: Nathan Bierema <nbierema@gmail.com>
55 lines
2.7 KiB
Markdown
55 lines
2.7 KiB
Markdown
# d3tooltip
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This tooltip aims for a minimal yet highly configurable API. It has a long way to go, but the essentials are there.
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It was created by [@romseguy](https://github.com/romseguy) and merged from [`romseguy/d3tooltip`](https://github.com/romseguy/d3tooltip).
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## Installation
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`npm install d3-state-visualizer`
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## Quick usage
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```javascript
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import * as d3 from 'd3';
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import { tooltip } from 'd3tooltip';
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const DOMNode = document.getElementById('chart');
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const root = d3.select(DOMNode);
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const vis = root.append('svg');
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const options = {
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offset: { left: 30, top: 10 },
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styles: { 'min-width': '50px', 'border-radius': '5px' },
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};
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vis
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.selectAll('circle')
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.data(someData)
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.enter()
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.append('circle')
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.attr('r', 10)
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.call(
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d3tooltip('tooltipClassName', {
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...options,
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text: (d) => toStringOrHtml(d),
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}),
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)
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.on('mouseover', function () {
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d3.select(this).style('fill', 'skyblue');
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})
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.on('mouseout', function () {
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d3.select(this).style('fill', 'black');
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});
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```
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## API
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| Option | Type | Default | Description |
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| -------- | ------------------ | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `root` | DOM.Element | `body` | The tooltip will be added as a child of that element. You can also use a D3 [selection](https://github.com/mbostock/d3/wiki/Selections#d3_select). |
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| `left` | Number | `undefined` | Sets the tooltip `x` absolute position instead of the mouse `x` position, relative to the `root` element. |
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| `top` | Number | `undefined` | Sets the tooltip `y` absolute position instead of the mouse `y` position, relative to the `root` element. |
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| `offset` | Object | `{left: 0, top: 0}` | Sets the distance, starting from the cursor position, until the tooltip is rendered. **Warning**: only applicable if you don't provide a `left` or `top` option. |
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| `styles` | Object | `{}` | Sets the styles of the tooltip element. |
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| `text` | String or Function | `''` | Sets the text of the tooltip. Can be a constant `string` or a function that takes the datum and returns a `string`. |
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