Significantly increase maxHeight of hover widget

[benibenj]

Copilot Generated Description: Increase the maximum height of the hover widget to 90% of the target window's inner height.

fixes #242377
cc @Tyriar

[Tyriar]

This is a pretty scary change to do generally, I think we should instead have an option that allows the user to override. maxHeightRelativeToWindow=0.5 or something, there's probably a nicer name

[Tyriar]

An example of what could happen is the hover could be so high it obscures the target it's under. I have a similar problem with terminal tabs where there isn't enough horizontal space to show it fully on the size, so it obscures the terminal tab, making it impossible to click.

[benibenj]

I see your point, to me it seemed more important to be able to read the hover content than to see the target which is why I suggested ths change. After thinking about this more. I think maxHeight should depend on the position of the target. If the target is at the bottom of the window, then maxHeight should be around 95% of the window, but when the target is in the center of the window, then it should only be around 45%. I think we should be solving this problem and not adding another option.

[Tyriar]

@benibenj I just don't want to deal with a long tail of "this hover is too big" issues that could come from this. Special casing hovers in the status bar by checking something like the target is within ~2px of bottom of screen and HoverPosition.ABOVE is used seems like a reasonable change provided there's a comment explaining it. At least it keeps the complexity inside the hover code.

[benibenj]

What if we do not set a max height when the option forcePosition is used? We are already checking window boundaries in that case and the hover will not be rendered on top of the target. The statusbar could set it as it makes sense for it to have anyways

[Tyriar]

What if we do not set a max height when the option forcePosition is used?

forcePosition is about making sure it's anchored to that side though, whether the height is unbounded is a different concern. I see forcePosition is used for extensions and SCM history, there's no reason they should be allowed to be super large. Example of 50% height being a good thing: