digital signage / ticker tape

[J. Landman Gay]

On 4/18/14, 12:18 PM, Jose Damaso wrote:
> Hi all -- I've taken interest in using Livecode for displaying ticker tape
> or digital signage type information. There were a few older forum posts on
> this topic a few years ago but haven't seen any recent activity in that
> area. Does anyone have a general direction or sample stacks I can start off
> with? I have purchased Animation Engine and thought that may be the way to
> go but I am only at the beginning of this project so any input would be
> welcome. Thanks!

There are two basic ways to do this:

1. Put the text into a field and move the field. The "move" command 
should do this efficiently, or you can use animation engine. When the 
right edge of the field goes off the left edge of the stack, reposition 
it with its left edge at the right side of the stack and move it again. 
This produces a smooth glide.

2. Put the text into a field with enough leading spaces to visually push 
the actual text off the right edge of the field. Adjust the text 
repeatedly by removing the leading character and placing it at the end 
of the field text. This method produces an effect more like a stock 
ticker, where the text jumps from one position to the next (the way LED 
lights would work.)

Both are pretty easy to script. In either case, you'll need a field with 
at least locktext and dontwrap set to true.

-- 
Jacqueline Landman Gay         |     jacque at hyperactivesw.com
HyperActive Software           |     http://www.hyperactivesw.com