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56 lines
2.0 KiB
Markdown
56 lines
2.0 KiB
Markdown
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d3tooltip
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=========================
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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 d3 from 'd3';
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import d3tooltip 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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let options = {
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offset: {left: 30, top: 10}
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};
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vis.selectAll('circle').data(someData).enter()
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.append('circle')
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.attr('r', 10)
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.call(
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d3tooltip(d3, 'tooltipClassName', options)
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.text((d, i) => toStringOrHtml(d))
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.attr({ 'class': 'anotherClassName' })
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.style({ 'min-width': '50px', 'border-radius: 5px' })
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)
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.on({
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mouseover(d, i) {
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d3.select(this).style({
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fill: 'skyblue'
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});
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},
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mouseout(d, i) {
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d3.select(this).style({
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fill: 'black'
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});
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}
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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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