[Lazarus] matching bracket problems (Carbon)

[John Stoneham]

Ok, a quick experiment leads me to believe it is indeed a redrawing issue.
As you suggested, I tried moving another window over the editor window. When
this happens, the highlighting appears as it should (when the cursor is
touching a bracket, the other bracket is highlighted; when the cursor is
away from the bracket, neither are highlighted). As soon as the editor
window receives focus again, the redrawing doesn't work anymore to highlight
or de-highlight the brackets.

BTW, the same thing happens if I pageup/pagedown with the cursor next to the
bracket. When I pageup/pagedown to bring that section back onto the screen,
the highlighting has repainted correctly. It also repaints correctly if I
CTRL+UP or CTRL+DOWN to scroll the editor window by one line while the
cursor remains on the line.

So, it definitely seems like a repaint or redrawing issue.

On Fri, Oct 10, 2008 at 9:00 AM, Martin Friebe <lazarus at mfriebe.de> wrote:

> Well, I don't have a mac, so I can't test this, but I was involved into
> some refactor around the bracket-highlights (a few month back).
>
> one of the major changes was
> http://bugs.freepascal.org/view.php?id=11693 revision 15861
> Did it work before that? Did/does it work in 0.9.24?
>
> A few of the other work items were
> http://bugs.freepascal.org/view.php?id=11732 revision 15845
> http://bugs.freepascal.org/view.php?id=11754 revision 15883 (highlight
> bracket on either side of caret)
>
> Anyway, a few things that may help to nail it down (even so I will not
> be able to do too much, since I have no mac...)
>
> 1) Do determine if it is an issue, with synedit thinking it needs to
> highlight a bracket, or is it an issue with Synedit not redrawing?
>
> Do find out: When the highlight goes wrong:
>  a) Bracket is highlighted, but the cursor moved away
>  b) Bracket is not highlighted, but the cursor is on the bracket
>
> resize the window, or overlap it with another window => anything that
> should force a redraw => does synedit correct the highlighting?
>
> 2) Fontsize issues (there is a good chance to find it here)
>
> - Try highlighter = "none" or "text"   does that look any better?
> - does it make a diff,if the caret is on the opening or closing bracket
> (the bracket occurring first on the line, or last?)
> - does it make a diff if the 2 brackets are on the same line, or on 2
> different lines (especially with highlighter none/text ?
>
> Synedit with highlighter, paints the line as a selection of small
> "tokens". It calculates the width of each of them. If the actual
> textdrawer gets a different width => all sort of strange things can happen.
> That could explain an operating system dependent issue.
>
>
> Martin
>
>
>
> John Stoneham wrote:
> >
> >
> > On Fri, Oct 10, 2008 at 4:17 AM, Mattias Gärtner
> > <nc-gaertnma at netcologne.de <mailto:nc-gaertnma at netcologne.de>> wrote:
> >
> >     Zitat von John Stoneham <captnjameskirk at gmail.com
> >     <mailto:captnjameskirk at gmail.com>>:
> >
> >     > I've been using the latest svn (Carbon) for a while now,
> >     updating once a day
> >     > or so, and matching brackets never seem to highlight properly.
> >     This issue
> >     > appears on 10.4.11 and 10.5.3 (different builds for Tiger and
> >     Leopard).
> >     > Usually, they don't highlight at all. When they do highlight,
> >     one or both
> >     > often get "stuck" with the highlighting on after the cursor
> >     moves away.
> >
> >     Some weeks ago I saw the same problem. It was the wrong font.
> >     Since then it works almost nice, only sometimes the highlighting
> >     is not updated.
> >
> >
> > Well, this would be a major improvement over what I see all the time.
> > Thing is, I've tried all the fixed width fonts (Andale Mono, Courier,
> > Courier New, Monaco), and changing font doesn't have any effect. It
> > still doesn't work properly, ever. Which font are you using that's
> > causing the bracket highlighting to almost work? Actually, it'd be
> > better if you posted all your settings: the color scheme you use,
> > font, font size, whether anti-aliasing is enabled, and your settings
> > for matching brackets (e.g. bold, inverted, etc). Maybe they're some
> > "magic combination" and you've stumbled onto it.
> >
> > Perhaps you could attach your editoroptions.xml file?
> >
> >
> >
> >     > Is anyone else noticing this issue? If so, I'll submit a bug
> report.
> >
> >     If you have some clues how to reproduce it reliable , yes please.
> >
> >
> > It reproduces reliably for me, in that bracket highlighting never
> > works the way it's supposed to. However, it seems to be working
> > somewhat for you. If I can reproduce your settings and see the same
> > behaviour, then I'm sure you could reproduce mine and see what I'm
> > seeing. Then I'd say it's reproducable and I'll file a bug report.
> >
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> >
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