Package Exports

react-mops

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Readme

M.O.P.S.

Modify Orientation Position Size

Value Proposition

M.O.P.S aims to provide a component that allows various transformations to an Element as seen in design software like Photoshop, Sketch any many others.

Installation

NPM

npm install react-mops --save-dev

Yarn

yarn add react-mops

Docs

Components

Box

Hooks

useShift `() => boolean;`

listens for the shift key.

useAlt `() => boolean;`

listens for the alt/option key.

useControl `() => boolean;`

listens for the control/ctrl key.

useMeta `() => boolean;`

listens for the meta key.

useRotation

Hook to modify the orientation of an element.

usePosition

Hook to modify the position of an element.

useSize

Hook to modify the size of an element.

useSnap

Hook to enable snapping.

useGuides

Hook to draw guides.

useCursors

Hook to enable custom cursors. (requires css file)

Basic usage examples

import {Box} from "react-mops";
import "react-mops/styles.css";

const App = () => (
    <div className="container">
        <Box isResizable>Resize me!</Box>
        <Box isRotatable>Rotate me!</Box>
        <Box isDraggable>Drag me!</Box>
        <Box isResizable isRotatable isDraggable>
            I can do it all!
        </Box>
    </div>
);

Homegrown

M.O.P.S. provides hooks to build custom components.

rotatable.jsx

import {useRotation, useShift} from "react-mops";

const Rotatable = ({children, initialRotation, onRotate, onRotateEnd, onRotateStart, style}) => {
    // Use Shift to rotate in steps
    const shiftKey = useShift();

    // Hook options
    const options = React.useMemo(
        () => ({
            onRotate,
            onRotateEnd,
            onRotateStart,
            step: 45, // If steps are active rotation uses this value
            steps: shiftKey // Activates steps
        }),
        [shiftKey]
    );

    // Rotation Hook
    const [
        deg, // Current rotation (degree on z-axis)
        {
            onMouseDown, // Triggers rotation
            onTouchStart, // Triggers rotation
            ref // Element considered as rotation center
        }
    ] = useRotation(initialRotation, options);

    // Dynamic element styles
    const style = React.useMemo(
        () => ({
            ...style,
            transform: `rotate3d(0, 0, 1, ${deg}deg)`
        }),
        [deg]
    );

    // Box with content and a dedicated handle to rotate the element
    // The content is used to determind the rotation center (not anchor point)
    return (
        <div className="rotatable" style={style}>
            <span
                className="rotatable-handle"
                onMouseDown={onMouseDown}
                onTouchStart={onTouchStart}
            />
            <div ref={ref} className="rotatable-content">
                {children}
            </div>
        </div>
    );
};

Rotatable.defaultProps = {
    style: {},
    initialRotation: 0
};

export default Rotatable;

react-mops