In GRAB control
Tom Glod
tom at makeshyft.com
Sun Oct 15 13:04:01 EDT 2017
richmond, are you asking a question or giving us code snippet to use?
On Sun, Oct 15, 2017 at 1:01 PM, Richmond Mathewson via use-livecode <
use-livecode at lists.runrev.com> wrote:
> Imagine a stack with a picture of an orange in its centre . . .
>
> The picture: img "arancia", contains the following script:
>
> on mouseDown
> grab me
> end mouseDown
>
> so the end-user can move the picture wherever they want
> all over the stack.
>
> HOWEVER . . . I want to know whether their initial movement is to the
> left, right, upwards or downwards.
>
> Fantasy time again [pseudocode]:
>
> on Grab
> put the left of me into LEFT1
> put the top of me into TOP1
> wait 2 ticks
> put the left of me into LEFT2
> put the top of me into TOP2
> if LEFT2 < LEFT1 then
> put "LEFT"
> else
> put "RIGHT"
> end if
> if TOP2 < TOP1 then
> put "UP"
> else
> put "DOWN"
> end if
> end Grab
>
> Richmond.
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