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https://github.com/kunduin/react-picture-annotation

A simple annotation component.
https://github.com/kunduin/react-picture-annotation

annotation javascript-library react typescript typescript-library

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A simple annotation component.

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# React Picture Annotation

[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/kunduin/react-picture-annotation/blob/master/LICENSE) [![Travis (.com)](https://img.shields.io/travis/com/kunduin/react-picture-annotation.svg)](https://travis-ci.com/Kunduin/react-picture-annotation) [![npm](https://img.shields.io/npm/v/react-picture-annotation.svg)](https://www.npmjs.com/package/react-picture-annotation)

A simple annotation component.

![rect](./doc/rect.gif)

## Install

```Bash
# npm
npm install react-picture-annotation

# yarn
yarn add react-picture-annotation
```

## Basic Example

[![Edit react-picture-annotation-example](https://codesandbox.io/static/img/play-codesandbox.svg)](https://codesandbox.io/s/react-picture-annotation-example-cw49e?fontsize=14)

```jsx
const App = () => {
const [pageSize, setPageSize] = useState({
width: window.innerWidth,
height: window.innerHeight
});
const onResize = () => {
setPageSize({ width: window.innerWidth, height: window.innerHeight });
};

useEffect(() => {
window.addEventListener('resize', onResize);
return () => window.removeEventListener('resize', onResize);
}, []);

const onSelect = selectedId => console.log(selectedId);
const onChange = data => console.log(data);

return (




);
};

const rootElement = document.getElementById('root');
ReactDOM.render(, rootElement);
```

## ReactPictureAnnotation Props

| Name | Type | Comment | required |
| --------------------- | ----------------------------------------------------------------------------------------------- | ------------------------------------------ | -------- |
| onChange | `(annotationData: IAnnotation[]) => void` | Called every time the shape changes. | √ |
| onSelected | `(id: string or null) => void` | Called each time the selection is changed. | √ |
| width | `number` | Width of the canvas. | √ |
| height | `number` | Height of the canvas. | √ |
| image | `string` | Image to be annotated. | √ |
| inputElement | `(value: string,onChange: (value: string) => void,onDelete: () => void) => React.ReactElement;` | Customizable input control. | X |
| annotationData | `Array` | Control the marked areas on the page. | X |
| annotationStyle | `IShapeStyle` | Control the mark style | X |
| selectedId | `string or null` | Selected markId | X |
| scrollSpeed | `number` | Speed of wheel zoom, default 0.0005 | X |
| marginWithInput | `number` | Margin between input and mark, default 1 | X |
| defaultAnnotationSize | `number[]` | Size for annotations created by clicking. | X |

## IShapeStyle

ReactPictureAnnotation can be easily modified the style through a prop named `annotationStyle`

```typescript
export const defaultShapeStyle: IShapeStyle = {
/** text area **/
padding: 5, // text padding
fontSize: 12, // text font size
fontColor: "#212529", // text font color
fontBackground: "#f8f9fa", // text background color
fontFamily:
"-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', Helvetica, Arial, sans-serif",

/** stroke style **/
lineWidth: 2, // stroke width
shapeBackground: "hsla(210, 16%, 93%, 0.2)", // background color in the middle of the marker
shapeStrokeStyle: "#f8f9fa", // shape stroke color
shadowBlur: 10, // stroke shadow blur
shapeShadowStyle: "hsla(210, 9%, 31%, 0.35)", // shape shadow color

/** transformer style **/
transformerBackground: "#5c7cfa",
transformerSize: 10
};
```

## IAnnotation

```js
{
id:"to identify this shape", // required,
comment:"string type comment", // not required
mark:{
type:"RECT", // now only support rect

// The number of pixels in the upper left corner of the image
x:0,
y:0,

// The size of tag
width:0,
height:0
}
}
```

## Licence

[MIT License](https://github.com/kunduin/react-picture-annotation/blob/master/LICENSE)

## How To Contribute

This repo uses semantic release. By running `npm run commit` and merging commits into master branch, travis will automatically trigger release.

Thanks all your great contributions.