I know it's possible and I know it's simple really, but I can't remember
it/figure it out!
I have a sub-stack that contains an image. I want the user to be able to drag
the corners and edges of the sub-stack window to make the window and its image
larger or smaller, but the window and image must maintain their original aspect
ratio – no stretching, no empty borders etc. I've tried the following in the
card script:
global gImageRatio
on resizeStack pNewWidth, pNewHeight, pOldWidth, pOldHeight
propSizeImage "coinSet", gImageRatio
pass resizeStack
end resizeStack
on propSizeImage pImageName, @pImageRatio
put the width of this stack into propWidth
set the width of image pImageName to propWidth
put propWidth div pImageRatio into propHeight
put the width of image pImageName into tWidth
put the height of image pImageName into tHeight
if propHeight > tHeight then
put tHeight into propH
put tHeight * pImageRatio into propW
else if propHeight < tHeight then
put propHeight into propH
put propH * pImageRatio into propW
else
put tWidth into propW
put tHeight into propH
end if
set the height of image pImageName to propH
set the width of image pImageName to propW
set the height of this stack to propH
set the width of this stack to propW
set the topLeft of image pImageName to 0,0
end propSizeImage
with the following initialisation in the stack script:
global gImageRatio
on preOpenStack
put the width of image "CoinSet" / the height of image "CoinSet" into
gImageRatio
end preOpenStack
I'm probably missing something obvious, but can anyone help please?!
Thanks
Peter
--
Peter Reid
Loughborough, UK
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