horizontal and vertical scrolling

[Richard Gaskin]

Timothy Miller wrote:

 > Is there any rational reason that native scrollbars can be enabled
 > for fields and groups but not for cards or stacks?

Okay, I'll give it a try, more seriously this time:

As I alluded to in a lighthearted way, scrolling a card by itself isn't 
something that can be apparent; only when you put objects on the card 
will scrolling have a noticeable effect.

As much as I've enjoyed SuperCard's scroll property for its window 
objects (its equivalent to LC's stacks) over the years, there's a 
downside to scrolling only the entire window.  Sometimes you just want 
to have a portion of the window scroll, and now and then you may want to 
have two or more independently-scrolling areas.

So using groups as the mechanism to provide scrolling seems a reasonable 
solution:  It accounts for a wide range of layout possibilities, and if 
you only want one scrolling region which is the full content area of the 
window it can do that too.

In some ways SC's full-window scroll is a bit simpler to work with, but 
as UI conventions evolve and the world is moving away from multi-window 
layouts to single-window layouts with multiple panes (think Adobe 
Premier vs iMovie), the flexibility of using groups becomes ever more 
valuable.

--
  Richard Gaskin
  Fourth World
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