Setup a Scrollbar?

[Brian Yennie]

Scott,

I think the trick is that you have to also increase the endValue when 
you increase the thumbSize (not very intuitive, I know).
Try this. Set:

startValue: 0
endValue: 100

Now scroll all the way down and check the thumbPosition... it's 67, not 
100.

So you probably want something more like:

endValue = 100*( (height of fld 1/(formattedHeight of fld 1 - height of 
fld 1))+1)
thumbSize = endValue *(height of fld 1)/(formattedHeight of fld 1)

For example, if you formattedHeight is 150 and your field is 50, you 
get:

endValue = 100 * (1 + 50/100) = 150
thumbSize = 150 * (1 / 3) = 50

And so you have a thumb which is 1/3 the height of the scrollbar - same 
as the field is 1/3 the height of it's contents.

Hope that helps - !

- Brian


> Recently, Malte Brill wrote:
>
>> try:
>>
>> startValue: 0
>> endValue: formattedheight of fld  - height of fld  - margins of fld 
>> (if
>> <1 no scroll)
>> pageInc: 1
>> lineInc: 1
>> thumbSize: 1
>
> Thanks Malte -- this is pretty much what I tried.  My problem is 
> getting the
> thumb correctly sized so, for example, if the field holds 14 items and 
> the
> lines number 15, you get a fairly large thumb, instead of the tiny 
> version
> when its size is set to 1.  When I try this:
>
>   set the thumbSize of sb myScroll to \
>    trunc(endValue of sb myScroll*(height of fld 1/formattedHeight of 
> fld 1))
>
> ...the last lines of the field are not accessible.  Guess I'm 
> wondering what
> the correct proportion is.
>
> Thanks & Regards,
>
> Scott Rossi
> Creative Director
> Tactile Media, Multimedia & Design
> -----
> E: scott at tactilemedia.com
> W: http://www.tactilemedia.com
>
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