Tuesday, August 23, 2011

Scrollbars - A New Take

When your finger moves the mouse's scroll-wheel down, the document moves up. This is the opposite of touch interfaces' notion of direct manipulation. Then, why does the scroll wheel work like that?

The answer is of course that the scroll wheel manipulates the scroll-bar's "tumb", not the document.

But what happens when the scroll-bar becomes less visible, or even invisible? Read what Apple did to scroll-bars in OS X Lion. Ubuntu has also hidden scroll-bars, but I think Appels' design is a lot cleaner: Apple simply copied their design from iOS.

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