I remember once had a problem like something like this. I solved it by including char 1 to -1 or was it adding the effective keyword? Don't remember and I don't have time to try at this moment. If you do this do you get the expected results?
the formattedheight of char 1 to -1 of line N of fld or the effective formattedheight of char 1 to -1 of line N of fld or the effective formattedheight of line N of fld Ralph DiMola IT Director Evergreen Information Services rdim...@evergreeninfo.net -----Original 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 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 set. However, none of the formattedheight of line N of fld ... the formattedheight of line 1 to N of fld ... the formattedheight of line 1 to -1 of fld ... include it. The same is true of 'internal' lines - it's not just the last one in the field - the formattedheight of a chunk doesn't include any spacebelow set on the last line of the chunk. This makes it near impossible to use a binary search accurately (or indeed to reliably use "the formattedheight of chunk xx of fld yy"). So now that I've describe it like that, I'm pretty sure it is a bug .... but comments welcome before I report it. -- Alex. On 28/03/2017 05:30, hh via use-livecode wrote: > 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, is determined. > > We had once a thread in the forum about that. The fastest method: > > Compare the formattedHeight of line 1 to L of fld T to the vscroll v0 > of fld T. Not by walking with L up from one, but by using a binary > search for L1 and then starting from there to find L2 by comparing to > v0+the height of fld T. This needs only a few millisecs even for large > chunks. > > Then use Alex's method with the styledText array of these lines. Or, > quick and dirty, save the selectedChunk, select before each line L > in the range L1 to L1 and collect the selectedLocs and then restore > the selectedChunk. > > Now draw the line numbers each into an own freshly created field or > use Alex's space below method. > > p.s. Hopefully you will share your final code. > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
