On 2017-03-29 12:48, hh via use-livecode wrote:
Alex,
before you waste valuable time:
The formattedRect can NOT be used in LC 7/8/9, because of the
(2^15 div 2)-limit for coordinates is active for that.
I couldn't find a bug report for that so I filed one:
http://quality.livecode.com/show_bug.
Alex,
a brilliant technique. It is certainly usable for other "searching"
tasks. And it simply needs for this use case a faster measurement-method
as input. We could try the selectedLoc:
The script below gets for me the exakt topLefts of the visible ones of
2 "worse case"-lines in < 1 second,
Sure, here it is.
I couldn't resist doing some simple benchmarks, just to verify my
intuition. Very glad I did.
OK - here's the theory :
we're using variations of binary search to find the lowest numbered
line that is visible, and then again to find the highest numbered line.
So at each s
On 04/01/2017 09:42 AM, hh via use-livecode wrote:
Alex,
please think about posting this. It is certainly valuable for other use
cases.
Agreed, even though I can't use it for my particular case.
(I implemented the brilliant idea of listStyle line numbering in a test
version of the glx2 scrip
> Alex T. wrote:
> I set out to optimise the 'visibleLineNumber' function, and succeeded
> in getting it down to approx 20% of the original version, by:
> - reduce from 2 to 1 height calculations per iteration
> - convert from recursive to iterative
> - use Newton-Raphson style linear interpolation
Conclusion : I give up :-)
We have three 'completed' approaches to the line numbering problem:
1. Jim Lambert's use of decimal-numbered-list style within the field
(has the limitation of not allowing the user's text to include list
styles, and some aesthetic constraints - but if you can live
On 29/03/2017 19:20, Jim Lambert via use-livecode wrote:
Now that I think about it, I’ve overcomplicated things.
You don’t need two fields at all.
Just set the liststyle of the field that contains your editable text to
‘decimal’.
Then the lines will be automatically numbered and outdented.
Yet
Hermann wrote:
> In sum I learned very important things in this thread:
> Using a styledText array (by Alex Tweedly).
> Using liststyles for _any_ field (by Jim Lambert).
> You could now think about making a "Sample stack" for that (livecodeshare).
>
> One thing to remark:
> One has to adjust the
> Jim L. wrote:
> Just set the liststyle of the field that contains your editable text to
> ‘decimal’. Then the lines will be automatically numbered and outdented.
> Yet conveniently, the ’text’ and the ‘styledtext’ runs will not ‘contain'
> the numbering since it is a styling.
Now I finally under
Richard wrote:
> This morning Jim Lambert emailed me a very different solution that I
> thought would be worth sharing here.
>
> Here he uses the engine's own metrics for calculating vertical line
> spacings, by having the number field placed below the editable text
> field, setting its width
Alex,
before you waste valuable time:
The formattedRect can NOT be used in LC 7/8/9, because of the
(2^15 div 2)-limit for coordinates is active for that.
So the algorithm works in LC 6.7.11, but the results are sadly
'extremely' wrong in LC 7/8/9:
Crossing the 'limit' with a vertical coordinate j
I see, you are optimizing this. Will become perfect.
The current search is part of a script that has to work also for
non-wrapped text (with possibly horizontal scrollbar) and is a first
step for calculating the visible "chars" (incl. whitespace).
In sum: you are right, the search for the lines c
On 28/03/2017 22:11, hh via use-livecode wrote:
Hi Alex,
below you will find a tested binary search for the visible lines which
uses item 4 of the formattedRect for the topLine and item 2 of the
formattedRect for the bottomLine.
That's great - thank you.
However, I do have a couple of questio
nal Message-
From: use-livecode [mailto:use-livecode-boun...@lists.runrev.com] On Behalf
Of Alex Tweedly via use-livecode
Sent: Tuesday, March 28, 2017 4:13 PM
To: use-livecode@lists.runrev.com
Cc: Alex Tweedly
Subject: Re: Line numbers for soft-wrapped styled text?
There is a bit of a problem I
ev.com] On Behalf
Of Alex Tweedly via use-livecode
Sent: Tuesday, March 28, 2017 4:13 PM
To: use-livecode@lists.runrev.com
Cc: Alex Tweedly
Subject: Re: Line numbers for soft-wrapped styled text?
There is a bit of a problem I encountered trying to code this up.
I'm not 100% sure yet if it's a
Hi Alex,
below you will find a tested binary search for the visible lines which
uses item 4 of the formattedRect for the topLine and item 2 of the
formattedRect for the bottomLine.
TMHO your method is so fast for visible lines of a field on usual
screensizes only that you could do that for each si
There is a bit of a problem I encountered trying to code this up.
I'm not 100% sure yet if it's a bug, though I think it must be. Comments
anyone ?
If I set the 'spacebelow' of the last (Nth) line of a field, and get the
formattedheight of the field, that includes the spacebelow value just s
The solution of Alex T. was the first example I saw of a useful
usage of the styledText array. TMHO this is the way to go for the
future of more and more complicated styled text.
As was said elsewhere, there could be a considerable speed up if
first the visible range of lines, say numbers L1 to L2
What a cool idea !
In fact, could you not simply do
set the liststyle of line 1 to -1 of fld "mytextfield" to "decimal"
and then unset the liststyle whenever needed (e.g. when the field is
subject to copy, save, etc.)
-- Alex.
On 27/03/2017 20:32, Richard Gaskin via use-livecode wrote:
When I first started down this road I went for getting max values from
the styledText array, similar (though far less efficiently) to how Alex
Tweedly solved this so well in his post the other day:
http://lists.runrev.com/pipermail/use-livecode/2017-March/235688.html
Great work as usual from Al
Bob Sneidar wrote:
> Yeah I was thinking the same thing. textChanged triggers a handler
> that reformats the text every time. In essence, you are doing what
> a word processor would do.
The textChanged message is only sent when changes are made to the text
of a field. Changes to styling attrib
Yeah I was thinking the same thing. textChanged triggers a handler that
reformats the text every time. In essence, you are doing what a word processor
would do.
Bob S
> On Mar 25, 2017, at 09:07 , Mark Wieder via use-livecode
> wrote:
>
> I looked into that for the glx2 script editor and g
On 26/03/2017 02:25, Mark Wieder via use-livecode wrote:
On 03/25/2017 04:00 PM, Alex Tweedly via use-livecode wrote:
Never done it, but I had a quick play
Hmmm... nice approach. And clever use of spacebelow.
If you have a way of determining which line(s) are being changed, then
you cou
On 03/25/2017 04:00 PM, Alex Tweedly via use-livecode wrote:
Never done it, but I had a quick play
Hmmm... nice approach. And clever use of spacebelow.
If you have a way of determining which line(s) are being changed, then
you could run this only from that line onward to save some time
rd wraps..
So, just lock the text and move on...
Craig
--
View this message in context:
http://runtime-revolution.278305.n4.nabble.com/Line-numbers-for-soft-wrapped-styled-text-tp4713343p4713362.html
Sent from the Revolution - User mailing list archive at Nabble.com.
__
needed to pollute the source field in order to use the formattedText and
identify the hard returns.
--
View this message in context:
http://runtime-revolution.278305.n4.nabble.com/Line-numbers-for-soft-wrapped-styled-text-tp4713343p4713356.html
Sent from the Revolution - User maili
ne-numbers-for-soft-wrapped-styled-text-tp4713343p4713356.html
Sent from the Revolution - User mailing list archive at Nabble.com.
___
use-livecode mailing list
use-livecode@lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage you
Nicely done, Alex - thanks!
--
Richard Gaskin
Fourth World Systems
Software Design and Development for the Desktop, Mobile, and the Web
ambassa...@fourthworld.comhttp://www.FourthWorld.com
_
Never done it, but I had a quick play
and found a way to do it - but whether it would count as "efficiently"
or not is debatable :-(
It does about 4 lines of text per millisecond on my elderly MacBook Pro
(with LC 9.0.0 DP6)
If you have a way of determining which line(s) are being ch
On 03/25/2017 08:36 AM, Richard Gaskin via use-livecode wrote:
I have an app that allows the user to write styled text, in which any
portion of that text may have a variety of styles and sizes, and may be
long enough to soft-wrap.
I'd like to add a line-number field next to it, but I haven't com
I have an app that allows the user to write styled text, in which any
portion of that text may have a variety of styles and sizes, and may be
long enough to soft-wrap.
I'd like to add a line-number field next to it, but I haven't come up
with an efficient way of setting up those line numbers s
31 matches
Mail list logo
