A simple React Picture Annotation component Sample in 2020

A simple React Picture Annotation component Sample in 2020


tutorials -

React Picture Annotation

A simple React Picture Annotation component.

Install

# npm
npm install react-picture-annotation

# yarn
yarn add react-picture-annotation

Basic Example

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 (
    <div className="App">
      <ReactPictureAnnotation
        image="https://source.unsplash.com/random/800x600"
        onSelect={onSelect}
        onChange={onChange}
        width={pageSize.width}
        height={pageSize.height}
      />
    </div>
  );
};

const rootElement = document.getElementById('root');
ReactDOM.render(<App />, rootElement);

Props

AnnotationData not required

TYPE

Array<IAnnotation>

see IAnnotation

COMMENT

Control the marked areas on the page.

selectedId not required

TYPE

string | null;

COMMENT

Control the selected shape.

onChange required

TYPE

(annotationData: IAnnotation[]) => void

COMMENT

Called every time the shape changes.

onSelected required

TYPE

(id: string | null) => void

COMMENT

Called each time the selection is changed.

width required

TYPE

number;

COMMENT

Width of the canvas.

height required

TYPE

number;

COMMENT

Height of the canvas.

image required

TYPE

string;

COMMENT

Image to be annotated.

inputElement not required

TYPE

(value: string, onChange: (value: string) => void, onDelete: () => void) =>
  React.ReactElement;

COMMENT

Customizable input control.

EXAMPLE

<ReactPictureAnnotation
  {...props}
  inputElement={inputProps => <MyInput {...inputProps} />}
/>

Types

IAnnotation

{
  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
  }
}

GitHub

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