Richard,
I don't think the solution works because of a bug in livecode where
spacebefore and spaceafter are not taken into account.
This is the problem:
put the formattedHeight of line 1 to tLOS of fld 1 into tScroll
I just posted my solution in the forums and I had to manually add them in.
I am also a bit confused about using the topmargin. I agree with your
logic but I when I tried it, things were off, so I did not use in
calculating the top.
I will post a new version of my MasterLibrary shortly and this will be
included.
Regards,
Mike
On 11/18/14 10:14 AM, Richard Gaskin wrote:
dunbarx wrote:
>> James Hale wrote:
>>
>> So if you have the linenumber of the line contains the text you wish
>> to see at the top of the field then...
>>
>> select line -1 of field "TextToScroll"
>> select line linenumber of field "TextToScroll"
>>
>> And line linenumber will now be at the top of the field.
>
>
> The field will scroll to the desired line, but if the textSizes
> of those lines are variable, the scroll will not come out right.
>
>
> The discussion here and on the forum is how to make that happen.
> So far, no solution. The OP wanted to find text, and this is
> straightforward, in that the foundline can be used to set the
> line selection. But his data was with mixed textSizes, and that
> is how this all started.
If James were suggesting doing calculations based on textHeight you'd
be spot-on, but by using selection he's relying on the engine's
understanding of the text as rendered - testing here it seems to work
quite well.
If we needed to do this with calculations only (if for some reason
selection would be problematic), we could use the formattedHeight of
line 1 to the desired line, subtracting the effective textheight of
the desired line itself (and accounting for the topmargin), e.g.:
put lineoffset("stringWeAreLookingFor", fld 1) into tLOS
put the effective textheight of line tLOS of fld 1 into tHt
put the formattedHeight of line 1 to tLOS of fld 1 into tScroll
set the vscroll of fld 1 to (tScroll-tHt-the topmargin of fld 1)
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