[GUI] Add a visual cue when columns are cut off

[ricab]

What are you trying to do?
When the GUI is sized such that not all columns in the instance list fit, there should be some visual indication for that.

Missing columns:

All columns:

What's your proposed solution?
Perhaps ensure that the titles row ends with an ellipsis in such cases.

[ricab]

@vikorama no rush, but your opinion would be welcome on this one.

[vikorama]

Interesting case. So, the problem is that users might not know that more columns are outside of the viewport.

On Mac I always use touchpad, so for me it was natural to just swipe and see the whole table. But for new users who use a mouse, it might not be easily discoverable.

• First idea is to set minimum width to 1240px, but we probably don't want that, because it'd also affect the terminals which users may wanna make smaller. I'd maybe still use 1240x700 as default when opening the app for the very first time.

• Second idea is what you mentioned with an ellipsis in the end. That would not let users select and copy IP addresses and VM names (unless we implement double-click to copy), and users can't compare cells to each other. Even tho this looks neat, might not be ideal for tabular UIs:
  

• Third: we can wrap text. Looks less neat. User can copy and compare text.
  

• Forth: we can use 2&3 as a setting.

• Fifth (and my favourite as it should be least effort): we may keep everything as is and set the scroll bar to shown on hover. Users already are able to adjust the size of the columns and which columns are displayed. With visible scrollbars it should be clear that not all content fits:

• Sixth: we could also drop outer strokes on this table (that's how we do in web apps) and remove the right and bottom margins, so that it's clear something is out of the border. Might not look good in dark themes.
  

[ricab]

I think the fifth solution would work perfectly, thanks!

[ricab]

Actually, this is already the case, but the scrollbar only shows when the mouse is over it. When that is not the case, there is still no indication.

[vikorama]

I initially wrote to 'make it always shown', then edited to tune it down a notch.

I'm fine with always showing a scrollbar when the content doesn't fit horizontally or vertically in the All instances table. (I wouldn't do this on the Catalogue and Details pages tho. In Catalogue it's clear, and Details page I'd also assume to be discoverable).