Oops. Not saved. It fails on larger offsets. Maybe I'm doing something wrong. Here's my longer
way, it could likely be optimized better. It does rely on a scripted field selection, and the
selectedChunk is passed to the handler:
on grpScroll pSelChunk
-- pSelChunk = selected field chunk: char x to y of fld z
put the num of words in char 1 to (word 4 of pSelChunk) of fld "tText" into
tNumWords
put the formattedtext of fld "tText" into tFText
put the num of lines in word 1 to tNumWords of tFText into tLineNum
put tLineNum * the effective textheight of fld "tText" into tScroll
set the vScroll of grp "tTextGrp" to tScroll
end grpScroll
Seems like there should be a better way.
On 3/27/20 2:47 PM, Mark Waddingham via use-livecode wrote:
Maybe (the formattedHeight of codeunit 1 to OFFSET of FIELD - the
formattedHeight of codeunit OFFSET of FIELD)?
Sent from my iPhone
On 27 Mar 2020, at 17:59, J. Landman Gay via use-livecode
<[email protected]> wrote:
In our last episode, our heroine was trapped by the selection of a line containing
metadata. The heroes of this group saved her. In all cases, scrolling the field was
accomplished by using the "select" command to bring the line into view.
Alas, escape from one danger has led to another. The field itself must be
inside an enclosing group so that it will scroll smoothly on mobile. She needs
to translate the data from codeunits to a scroll position in order to set the
group's scroll rather than the field scroll.
Each line of the data looks something like this:
1,103,7
While 7 is a line number, multiplying that by the textheight doesn't give
consistent results due to line wrap. The first two items are codeunit offsets
but there doesn't seem to be a way to translate those into pixel positions.
Our heroine is once again in distress, though as mentioned here, some of that
may be due to the inability to reach the keyboard from 6 feet away, which
presents its own positioning problems.
--
Jacqueline Landman Gay | [email protected]
HyperActive Software | http://www.hyperactivesw.com
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--
Jacqueline Landman Gay | [email protected]
HyperActive Software | http://www.hyperactivesw.com
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