never ending scroll?

Devin Asay devin_asay at byu.edu
Fri May 28 10:02:10 CDT 2010


On May 27, 2010, at 4:56 PM, Nicolas Cueto wrote:

> Tom,
> 
> The scroll-wheel I've in mind is in the "Add alarm" section of the
> iPhone's "Clock".
> 
> "Lazily loaded"? I guess I'm off to search that.
> 
> In the meantime, I'd still welcome example scripts of something that'd
> do an endless scroll of text in a text field, rather than a group, a
> table, a window, etc.

Hi Nicolas,

The relatively new addition to revTalk, 'wrap', might help here. This example isn't exactly what you're describing, but I think the same principle could be applied. I just tested this script in a "LittleArrows" style scrollbar, and it successfully does an endless loop through the numbers 1 through 12, both backward and forward, when you click the increment or decrement arrows. 

Now imagine lines of text stored in a variable that would be shown in the field, instead of the numbers.

local sCount

on scrollbarLineInc
    put 1,2,3,4,5,6,7,8,9,10,11,12 into tnums
    add 1 to sCount
    put sCount wrap 12 into fld "counter"
end scrollbarLineInc
    
on scrollbarLineDec
    put 12,11,10,9,8,7,6,5,4,3,2,1 into tnums
    subtract 1 from sCount
    if sCount is 0 then put 12 into sCount
    put sCount wrap 12 into fld "counter"
end scrollbarLineDec

HTH,

Devin

Devin Asay
Humanities Technology and Research Support Center
Brigham Young University




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