Drag-scrolling a group

[Roger Eller]

You've probably already examined the example on RevOnline.

http://revonline2.runrev.com/stack/606/Scrolling-Group

~Roger


On Thu, Jul 11, 2013 at 2:28 PM, Devin Asay <devin_asay at byu.edu> wrote:

>
> On Jul 11, 2013, at 12:10 PM, Roger Eller wrote:
>
> > Can it be done math-free?  If you nest a group inside the scrollable
> locked
> > group, and set the nested group to a simple "grab me" in a mouseDown or
> > mouseStillDown handler…
>
> While I appreciate the math-free approach, ;) grab isn't the best tool
> here, because it lets you drag the group contents beyond the bounds you
> want to show. Setting the scroll values, on the other hand, prevents that
> problem.
>
> BTW, in the meantime I discovered that lock screen fixes most of my
> problems:
>
> on mouseMove pNewMouseH, pNewMouseV
>     if sDragging then
>         lock screen
>         set the hScroll of me to the hScroll of me - (pNewMouseH -sMouseH)
>         set the vScroll of me to the vScroll of me - (pNewMouseV - sMouseV)
>         unlock screen
>     end if
> end mouseMove
>
> I'm still interested in other people's solutions to this. I can't imagine
> I'm the only one who's ever tried this.
>
> Devin
>
> Devin Asay
> Learn to code with LiveCode University
> http://university.livecode.com
>
>
>
>
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