21 Aug
2004
21 Aug
'04
5:01 p.m.
On Sat, Aug 21, 2004 at 06:35:44PM +0200, Melanie wrote:
Hi,
it's backwards in a "numerical" sense, in that the numbers increase with
one slider type, but decrease with another, using the same command.
However, UI designers don't think in numbers, but associations.
Left is generally associated with up, right with down, as we read left to
right, top to bottom. Therefore, up MUST map to left, down MUST map to
right, otherwise, non-mathematically minded people get uttely confused.
I couldn't find anything on the web abou this.
But I asume the behaviour was thought out for
scrollbars and transfered to sliders.
With scrollbars scrolling lets say a table, the vertical scrollbar
has top = start, bottom = end. Horizontal scrollbar left = start,
right = end. Wheeling up on vertical sliders means scrolling
toward the vertical start. Wheeling up on the horizontal slider
should therefor mean scrolling to the horizontal start -> scrolling
left.
But there's nothing to scroll with sliders. They're not about
a position in space.
Today might well have been the first time I used the wheel
on common sliders, and it felt backwards!
Fan-slider wheeling will stay as is, differing from QT and
GTK sliders. But I doubt the folks behind the toolkits would
listen and change wheeling direction.
---
Thorsten Wilms