bulia byak wrote:
Here's a usability question that I'd like to get some feedback on. Myself, I'm undecided.
How to display and input values of opacity and blur?
- As percent, 0 to 100, or 0.0 to 100.0.
I Think 0 to 100 is the good way.
It's usable, intuitive, and friendly with user's mental schemes. In addition, 0%-100% is used commonly by others graphics applications.
0.0 to 1.0 is not intuitive and, of course, is not friendly with users.
Pro: easier to pronounce; more common in "real life"; spinbutton can be shorter by one character (dot).
Contra: requires a "%" label after the spinbutton; if the label is not there (as e.g. in the statusbar there's little room for it), it may be more difficult to guess, when you see e.g. "15", that the maximum is 100; requires a change from the Inkscape status quo.
- As numbers from 0.0 to 1.0 (with two or three significant digits).
Pro: no need for a % label; easier to guess what the maximum is (though still not entirely obvious, unless you have a slider too); no need to change the status quo.
Contra: slightly more "geeky", more cumbersome to type and pronounce, requires slightly wider spinbutton.
Opinions?