Bonjour Jean-Pierre,
Le 17 avr. 07 à 13:56, Jean-Pierre a écrit :
Is there a way to restrict the display of a moving object in the
screen?
I use white rectangle to mask some aera but it is not easy to
handle...
I assume you use the grab command but to master moves you need to run
your own code mainly based on mouseMove:
Something like the following script in the script of the object you
want to move might help you:
Note that the "Boundaries" graphic sets the limits the object has not
to cross.
local lAllowDrag -- script var
---------------------------------
on mouseDown
put the left of me - the mouseH,the top of me - the mouseV into
lAllowDrag
end mouseDown
---------------------------------
on mouseMove pX,pY
if lAllowDrag is empty then exit mouseMove
-----
if not IsPosAllowed(the long name of grc "boundaries") then --
set the screenMouseLOc to globalLoc(the loc of grc "boundaries")
move me to the loc of grc "boundaries" in 100 milliseconds --
default location
exit mouseMove
end if
-----
if the mouse is down then
-- grabs object:
set topleft of me to (pX + item 1 of lAllowDrag),(pY + item 2 of
lAllowDrag)
end if
end mouseMove
---------------------------------
on mouseUp
put empty into lAllowDrag
end mouseUp
---------------------------------
on mouseRelease
mouseUp --
end mouseRelease
---------------------------------
on mouseEnter
mouseUp --
end mouseEnter
---------------------------------
function IsPosAllowed pRefObj
if the top of me < the top of pRefObj then return false
if the bottom of me > the bottom of pRefObj then return false
if the left of me < the left of pRefObj then return false
if the right of me > the right of pRefObj then return false
return true
end IsPosAllowed
Best regards from Paris,
Eric Chatonet.
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