How to zoom at the center of the image programmatically about zoomable HOT 3 CLOSED

@hellosagar
One possible way to achieve this is Modifier.onSizeChanged.
You can get the size of image like below.

var size = remember { Size.Unspecified }
Image(
    ...
    modifier = Modifier
        .onSizeChanged { size = it.toSize() }
        .zoomable( ... )
)

Then you can pass size.center to ZoomState.changeScale.

zoomState.changeScale(
    targetScale = 2f,
    position = size.center
)

By the way, I am wondering if I should make ZoomState.layoutSize public.
Because it is not available at the time ZoomState is created.

from zoomable.

Currently, on passing the same offset, it behaves like the following.

zoomState.changeScale(
                zoomState.scale + 1,
                Offset(zoomState.offsetX, zoomState.offsetY),
              )

Removed the media

@usuiat I would appreciate your response. Thanks!

from zoomable.

Thanks that helped! It would be nice to make the zoomState.layoutSize as it's already available inside the zoomState, eliminating the need to keep a separate state of the size.

from zoomable.