Is there any way to do rotate in this library?

[Tamagouuu]

It will be good if the viewer have ability to rotate, isn't it?

[hadarhubara10]

It is also necessary for me

[guyzmo]

I implemented rotation outside of the lib by doing something like this:

given the ref to an image:

  const imageRef = useRef<HTMLImageElement>(null)

I implemented and exposed the following API (through a custom context):

    const rotateClockwise = useCallback(() => {
      if (!imageRef?.current) return
      setRotation((rotation) => {
        const newRotation = (rotation + 90) % 360
        imageRef.current!.style.transform = `rotate(${newRotation}deg)`
        return newRotation
      })
    }, [setRotation, imageRef]);
    const rotateCounterClockwise = useCallback(() => {
      if (!imageRef?.current) return
      setRotation((rotation) => {
        const newRotation = (rotation - 90) % 360
        imageRef.current!.style.transform = `rotate(${newRotation}deg)`
        return newRotation
      })
    }, [setRotation, imageRef]);

Then I implemented it on the image itself:

  return (
      <TransformWrapper>
        <ImageControls />
        <TransformComponent>
          <img ref={imageRef} id="img" src={uri} />
        </TransformComponent>
      </TransformWrapper>
   )

then the ImageControls is just a custom version of the default Controls that implements both useControls() for the lib and my own context.

TBH, if I got little time, I believe it can be easy to add to the API

HTH

[vojdan]

This should be a pull request.

[Trisogene]

This solution doesnt update the trasform wrapper/component rotation thus it make the panning bugged. Im searching for an alternative solution, did anyone found something yet?

[abrasumente999]

Setting the width and height in the wrapper and content wrapper with an !important fixed the panning issue for me, and centering the content with flex if your alignment is off.

const [rotation, setRotation] = React.useState(0);

const rotateClockwise = useCallback(() => {
    setRotation(rotation => {
        const newRotation = (rotation + 90) % 360;
        return newRotation;
     });
}, [setRotation]);

const rotateAnticlockwise = useCallback(() => {
    setRotation(rotation => {
        const newRotation = (rotation - 90) % 360;
        return newRotation;
    });
}, [setRotation]);

return (
    <TransformWrapper>
       <TransformComponent
           wrapperClass="!h-screen !w-screen"
           contentClass="!h-screen !w-full flex items-center justify-center"
        >
            <picture>
                <img
                   src={src}
                   style={{
                       objectFit: "cover",
                       maxHeight: "100vh",
                       maxWidth: "100vw",
                       transform: `rotate(${rotation}deg)`
                   }}
                />
            </picture>
        </TransformComponent>
     </TransformWrapper>

     <button onClick={() => rotateClockwise()} >Rotate clockwise</button>
     <button onClick={() => rotateAnticlockwise()} >Rotate Anticlockwise</button>
)