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List:       koffice-devel
Subject:    Re: KDE Icon naming data base
From:       "Robert Knight" <robertknight () gmail ! com>
Date:       2007-07-26 3:01:22
Message-ID: 13ed09c00707252001o44bcac37n3d6c9931e82f2b0b () mail ! gmail ! com
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Hi Stefan,

James's comments reminded me of something I spotted at Akademy after
learning about Qt's paint performance debugging tool.

KSpread (2.0) currently repaints far too many cells when changes are
made in the spreadsheet, including every cell in the entire view when
a single cell's contents change.

To reproduce:

1.  From the terminal, set the QT_FLUSH_PAINT environment variable to
a small non-zero number.  eg:

export QT_FLUSH_PAINT=1

2.  Run kspread 2.0 from the terminal.

3.  Make changes in the spreadsheet.  Scroll around, edit cell
contents etc. and you can see the repainted areas flash yellow.
Increase the value of QT_FLUSH_PAINT and the flashing will last
longer.


Regards,
Robert.

On 25/07/07, James Richard Tyrer <tyrerj@acm.org> wrote:
> Stefan Nikolaus wrote:
> > On Wednesday 25 July 2007 00:05:59 James Richard Tyrer wrote:
> >> Regarding KSpread:  I have what is called 1.6.3 installed and I have
> >> found that it is useless for this work.
> >>
> >>      I have had problems inserting lines.
> >
> > You have to delete some rows after the last data before you can insert new
> > ones. That's because 32767+ rows are stored in the document and hence
> loaded
> > and treated as non-default rows. Unfortunately, the 1.x series does not
> allow
> > to insert new rows (or columns) if all rows are non-default rows. I think
> > this issue is fixed in /trunk. Not absolutely sure though.
>
> That is seriously strange and a major bug.  Note that the error message
> is not very helpful.  Note that I don't think that I formatted any more
> of the sheet than I was using -- I learned not to format blank sheet in
> DOS. :-)
>
> >>      When I sort, the background colors don't move with the cells.
> >
> > Use "Data->Sort..." and enable the "Copy cell formatting" option.
>
> Thanks for the tip.  However, that should be the default since it *is*
> the default in other spreadsheets and users will expect it.
> >
> >>      It is very slow.
> >
> > On loading? While scrolling? When?
>
> When saving it can take minutes to save the Icon Renaming DB on my 400
> MHz system.
>
> It can take most of a minute to repaint the screen when switching
> windows or desktops-- but not always.
>
> Sometimes it just seems to be "contemplating its navel" and won't accept
> input.  Perhaps this is a very slow recalculate although I have nothing
> to recalculate.  If this is recalculation, then auto recalculate should
> be in the background.
> >
> > Check out the upcoming 2.x series, if possible, and tell us, if you still
> > encounter these issues.
> >
> Put on To Do list.  Have to get KDE4 to work first.
>
> --
> JRT
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> koffice-devel@kde.org
> https://mail.kde.org/mailman/listinfo/koffice-devel
>
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