Page 1 of 1
How keep the loc of stack after scalefactor ?
Posted: Mon Nov 17, 2014 2:04 pm
by jmburnod
Hi All,
I begin to use scalefactor but I don't found the way to set the loc of stack to the screenLoc after I have used scalefactor.
Code: Select all
put the scaleFactor of this stack into tCurScale
add 0.1 to tCurScale
set the scaleFactor of this stack to tCurScale
set the loc of this stack to the screenloc
Is there someone have a trick ?
Best regards
Jean-Marc
Re: How keep the loc of stack after scalefactor ?
Posted: Mon Nov 17, 2014 3:38 pm
by dave.kilroy
Hi Jean-marc
This is how I did it (basically you have to apply your scalefactor to the stack's loc)
Code: Select all
--finding out about the screen
put the screenRect into tScreenRectRaw
put the working screenRect into tScreenRect
put item 3 of tScreenRect into tScreenW
put item 2 of tScreenRect - item 2 of tScreenRectRaw into tMenuBarHeight
put item 4 of tScreenRectRaw - item 4 of tScreenRect into tTaskBarHeight
put item 4 of tScreenRect - tMenuBarHeight into tScreenH
--elsewhere I calculate what scaleFactor I need for the app, then I set the stack to it
set the scaleFactor of stack "Rewind" to tScaleFactor
--loc for positioning the stack (before scaleFactor)
put round(tScreenW/2,0) into tAppLocH
put 13 into tTitleBarHeight
put tMenuBarHeight + tTitleBarHeight + round(tScreenH/2,0) into tAppLocV
--loc for positioning the stack (including scaleFactor)
put round(tAppLocH / tScaleFactor) into tAppLocH
put round(tAppLocV / tScaleFactor) into tAppLocV
set the loc of stack "Rewind" to tAppLocH & comma & tAppLocV
Kind regards
Re: How keep the loc of stack after scalefactor ?
Posted: Mon Nov 17, 2014 7:23 pm
by [-hh]
[Sorry I had to rewrite this, had some copy/paste errors when editing and pasting from scripts.]
Hi all,
Dave's technique is not only good for the screenloc (what he elaborates in more detail), but also when using any *globalLoc* with a scaled stack.
Scale back the globalValue via *dividing* by the scaleFactor:
Code: Select all
-- For example in card script
function globalScaledBack gLoc
put the scalefactor of this stack into sf
return ( round(item 1 of gLoc/sf), round(item 2 of gLoc/sf) )
end globalScaledBack
on mouseUp
set the loc of this stack to \
globalScaledBack (the screenmouseLoc)
set loc of btn 1 to localLoc (the screenmouseLoc)
end mouseUp
If you need the globalLoc converted to a localLoc, the localLoc function works correctly with a scaled stack (7.0.1), you don't have to 'scale back' the globalLoc for such a conversion (see above mouseUp).
I used such scale-back-computations for determining several sizes in the "nixieStack" (Raspi Collection), that can be scaled by rightClick and moved by dragging (uses 'converted' screenMouseLoc).
My opinion is, that it is a "bug", when we have to use our own globalLoc computations. That is, the scalefactor shouldn't change *global* coordinates, because a screen cannot be scaled, it's a physical unit. Certainly it should change, as it does, change the globalToLocal computations.
I already reported this as a bug without success, now it is at least a documentation bug ...
This (hidden) changing of global coordinates by the engine is also the reason why currently a scaled stack can leave the screen if one is changing the scalefactor and tries to "pin up" the stack at it's current topleft or bottomright or loc, but as I said, no success ...
Hermann
Re: How keep the loc of stack after scalefactor ?
Posted: Mon Nov 17, 2014 8:54 pm
by dave.kilroy
Nice function Hermann! Focused, to-the-point and elegant
Re: How keep the loc of stack after scalefactor ?
Posted: Mon Nov 17, 2014 11:00 pm
by jmburnod
Hi Dave and Hermann,
Thanks for help
I tried to use your ways and both work fine.
In my context (a btn ZoomIn at topleft of cd) Dave's ways works better than Hermann's way. In Hermann's way I understand the mouse must be to the screenLoc. Am I right ?
Anyway, I can now zoom the time line that I build with my students who have a visual deficit
Kind regards
Jean-Marc
Re: How keep the loc of stack after scalefactor ?
Posted: Tue Nov 18, 2014 2:03 am
by [-hh]
Hi Jean-Marc.
Jean-Marc wrote:I understand the mouse must be to the screenLoc. Am I right ?
Yes, of course. But it's both the same technique. I wanted just give a different example to Dave's one. He uses a perfectly "elaborated" screenloc respecting also other things. If you use
set loc of this stack to globalScaledBack(the screenloc)
you get the same as you awaited to have (and have if the scalefactor is 1) with
set loc of this stack to the screenloc.
I tested this for example with an option button that makes several scalefactors available (say 0.5 in steps of 0.25 to 2.0). Setting it's script to the following will hold your stack always at the screenloc:
Code: Select all
on menuPick pN
lock screen; lock messages
set scalefactor of this stack to pN
put the screenLoc into sL
set loc of this stack to \
(round(item 1 of sL / pN), round(item 2 of sl / pN))
unlock screen; unlock messages
end menuPick
Also you see a current 'property' (I already reported this, some may call it a 'bug'): The textSize of the option button's content is *not* scaled.
[Edit. WARNING for all crazy testers (like me). Don't set scalefactor to 10 or 20, so that it exceeds the screenrect. Yes, this looks great, but LC will forever refuse to reopen your stack after you closed it at this scaled size. If you report this as bug, don't blame me, please ...]
Re: How keep the loc of stack after scalefactor ?
Posted: Tue Nov 18, 2014 9:30 am
by jmburnod
Hi Hermann,
Thanks again.
I have confused screenLoc and loc of stack.
It work fine if we have in our head your alert about limits