I need the user to select 3 numbers that add up to 1, let's call them
z. I could have a slider for
z would simply be
1 - x - y. But what if the user slides
x to 1 and
y to anything above 0? I could popup an error message, but that's not friendly...
I could shorten
y's slider depending on what
x's slider value is. Is there a better solution for this kind of widget(s)? It might be cool to have a slider with 2 tabs, which would separate the
z values. But I'm worried that might be confusing, particularly if one of the values is very small or 0?
Is there a good UI solution?