🚀 go-pugleaf

You can access a fit command from a script.

You can also say:

set visible bounds of myImage to (visible bounds of parent of myImage)

However, this will distort the image. If you want to preserve the proportions, then this will do it:

-- This script scales the selected image to fit its frame.

tell application "InDesign 2.0.2"
 set myImage to page item 1 of item 1 of selection
 set visible bounds of myImage to (visible bounds of parent of myImage)
 set myHoriz to horizontal scale of myImage
 set myVert to vertical scale of myImage
 if myVert > myHoriz then
  set vertical scale of myImage to myHoriz
  move myImage by {0, ((item 3 of visible bounds of myImage) - (item 3 of visible bounds of parent of myImage)) * 0.5}
 else
  set horizontal scale of myImage to myVert
  move myImage by {((item 4 of visible bounds of myImage) - (item 4 of visible bounds of parent of myImage)) * 0.5, 0}
 end if
end tell

Oddly, though, when I run this script, even though it seems to work properly, I get an error message to the effect that some part of the move instruction (whichever one is used) failed to return a result.

Dave