Panel minSize using pixels behaves as percentage on window resize

[JJ8443]

Hi, pleasantly surprised to see 0 open issues on a popular github repo, congrats!

Swapped over from very old package handling resize by pixels. My issue is, If I have a panel set to a minSize of say 100px, I then shrink my browser down to very small, the panel will keep to 100px. However when I then maximise my browser it will scale my panel up as a percentage of what it was when the browser was smaller.

This can be seen on your demo also: https://react-resizable-panels.vercel.app/examples/min-max-sizes

Set Left to 100px, shrink browser window and then maximise, the pixels increase.

Playing with it further it seems like all resizing works on percentages. If in a smaller window i set my panel to my max width, then maximise, it retains max width however I minimise again and it shrinks relative to browser size.

Desired behaviour:
Think it would be fine for everything to stay as is as it doesn't necessarily break UI flow but the minsize upon resize to any size should retain its min pixel size.

Using latest version: 4.11.2

Thanks!

[bvaughn]

Hey Jamie 👋🏼

The use case you're describing makes sense, but I'm not sure if it would be something this library could support. I only recently added support for pixel-based constraints (min/max and default sizes). The in memory size of panels is managed via Flex though, which means it basically has to be percentage based. I do this for performance reasons, to avoid having to thrash the layout and do a bunch of render updates when things trigger resizing.

I'm not sure I can support what you're describing. If you have ideas of how it could be implemented though, I'm happy to hear them and consider!

[JJ8443]

Hmm okay, not sure I could be of much use if you don't have an idea haha. Without diving into your library only thing I could think of is having a listener for a window resize changes, then checking if value is minimum value and if so, manually set that value to what would be the minimum value based on the windows new size?