Proportional resizing of stack

[Scott Rossi]

Recently, Devin Asay wrote:

> I have a stack that I want to constrain to a 4:3 ratio when resizing,
> with a minimum stack size of 800 X 600. A search of the archives
> didn't yield any relevant results.
> ...
> Any suggestions for my humanities-addled, math-challenged brain?

One way is to set the rect of the stack, instead of a point combination.
This will keep the relative location and dimensions intact.  The following
seems to work here (in a resize widget positioned at the bottomright of the
stack:

on mouseDown
  set the uAllowResize of me to mouseH() - left of me,mouseV() - top of me
end mouseDown

on mouseMove X,Y
  if the uAllowResize of me is false then exit mouseMove
  put (X - item 1 of the uAllowResize of me) into V
  set topLeft of me to V,(3*V) div 4
  put rect of this stack into tRect
  put globalLoc(bottomRight of me) into BR
  put item 1 BR into item 3 of tRect
  put item 2 of BR into item 4 of tRect
  set rect of this stack to tRect
end mouseMove

on mouseUp
  set the uAllowResize of me to false
end mouseUp

on mouseRelease
  mouseUp
end mouseRelease

 

Regards,

Scott Rossi
Creative Director
Tactile Media, Multimedia & Design
-----
E: scott at tactilemedia.com
W: http://www.tactilemedia.com