If you were prepared to set the height of the 'tramlines' dynamically then
you could use the following function to return the appropriate value based
on the true height of a visible lowercase z of the relevant font and size
(the test character must be visible as the function relies on the
mouseColor). Watch out for line wraps.
Terry...
put the formattedRect of [chunk expression for target character] into tRect
put zHeight(tRect) into tHeight
-- insert some routine to separate the 'tramlines' by tHeight
function zHeight pRect
put the mouseLoc into tM
put round((item 1 of pRect + item 3 of pRect)/2) into tX
put "" into tColorData
lock screen
repeat with i = (item 2 of pRect) to (item 4 of pRect)
set the screenMouseLoc to globalLoc((tX,i))
put i&comma&mouseColor() &cr after tColorData
end repeat
filter tColorData with "*,0,0,0" -- black points only
put (item 1 of line -1 of tColorData)-(item 1 of line 1 of tColorData)+2
set the screenMouseLoc to globalLoc(tM)
unlock screen
return ((item 1 of line -1 of tColorData)-(item 1 of line 1 of
tColorData)+2)
end zHeight
On 2/06/10 8:10 AM, "Nicolas Cueto" <[email protected]> wrote:
>> How are you positioning the guidelines?
>
> The guidelines don't get positioned each time. I positioned them once
> during initial development and that's it.
>
> In more detail, I put the text in the field, drew the two lines, then
> manually nudged the lines until they looked in the right place, and
> finally locked their positions.
>
>
>> Can you use the formattedRect
>> property of an offscreen field to determine the correct positions?
>
> Didn't know about that property. I'll try.
>
>
>> Could you do a spot of preliminary 'image analysis'
>
> Thanks Terry, but that's way beyond what I'm up to.
>
> --
> Nicolas Cueto
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