Re: [kde] how to use kdialog --font ?

[ianseeks]

On Monday 26 Oct 2015 20:31:48 J. Leslie Turriff wrote:
>   I want to use kdialog to display a table of values, and to make the 
output
> columns line up, the simplest way is to display the data with a monospace
> font, e.g. DejaVu Sans Mono.  kdialog --help-qt shows option -fn 
> or --font , but does not describe the format of the  string.
> 
>   For testing, I've tried all of the following, but none seem to do 
anything:
> 
>   kdialog --font 'DejaVu Sans Mono' --msgbox 'Does this use the right 
font?'
>   kdialog --font 'dejavu sans mono' --msgbox 'Does this use the right 
font?'
>   kdialog --font '-*-dejavu sans mono-medium-r' --msgbox 'Does this use 
the
> right font?'
> (This last after using xfontsel to see the X definition, just in case.)
> 
>   I've searched the web for documentation and hints, and come up empty.  
I've
> looked at the QT class documentation, but those are c++ calls, so don't
> tell anything about kdialog.
> 
>   Does anyone out there know how the --font string should be formatted?
> 
> Leslie

I've just done a "kdialog ?" and there is no reference to a "--font" and thats 
using this version 
Qt: 4.8.7
KDE Development Platform: 4.14.12
KDialog: 1.0

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Re: [kde] how to use kdialog --font ?

[ianseeks]

On Tuesday 27 Oct 2015 10:03:06 Duncan wrote:
> ianseeks posted on Tue, 27 Oct 2015 08:05:49 + as excerpted:
> > On Monday 26 Oct 2015 20:31:48 J. Leslie Turriff wrote:
> >> I want to use kdialog to display a table of values, and to make
> >> the output columns line up, the simplest way is to display the data
> >> with a monospace font, e.g. DejaVu Sans Mono.  kdialog --help-qt
> >> shows option -fn  or --font , but does not describe the
> >> format of the  string.
> 
> [snip the details as not relevant to this particular subthread]
> 
> > I've just done a "kdialog ?" and there is no reference to a "--font"
> > and thats using this version
> > Qt: 4.8.7
> > KDE Development Platform: 4.14.12
> > KDialog: 1.0
> 
> The two of you are using two different sets of help output.
> 
> For most kde executables,  --help (or  ?, which was new
> to me) will output help text in two sections.  The first section is
> generic parameters such as --help itself, the section is command-specific
> options, followed by command specific arguments.
> 
> You (ianseeks) were looking at the ?/--help output and apparently focused
> on the (command specific) Options section, which, you correctly noted,
> contains no --font or similar option.

seemed the sensible thing to do at time. :o)
 
> However, the OP (J Leslie Turrif) specifically mentioned help output
> found under --help-qt, which is qt-specific help that generally applies
> to all qt-based programs, pretty much regardless of what they actually
> are.  Similarly, --help-kde is kde-specific help that generally applies
> to all kde-based programs, pretty much regardless of what they are.
> --help-all should list all the above, the generic options, followed by
> the command specific options, followed by the qt options, then the kde
> options, and finally the command arguments.
> 
> And it can be observed that --help-qt (as well as --help-kde and
> --help-all) is indeed listed under the generic options (at least for my
> kdialog 1.0, on kde 4.14.13, on qt 4.8.7) section when invoking
> kdialog --help or kdialog ? .

perhaps the qt/kde options should be listed at the same time something along 
the lines of "man rpm"  i.e. get all the options into the open

thanks for the enlightenment.

> And, --help-qt (and the qt section under --help-all) does indeed list
> both --fn and --font, as synonyms for each other.
> 
> 
> So... the --fn/--font option is a generic qt option, that should work
> with most qt-based apps, and is actually a generic option included due to
> the app being qt-based, even if in some cases --fn/--font won't apply, or
> will be overridden by something else.
> 
> 
> So far so good.  But I don't have an answer to the original question,
> because while I've occasionally used some other qt option and had it
> work, I've never needed to use that one.  Also, kdialog is a rather
> unusual application, and I'm not /entirely/ sure it honors that
> particular qt option at all.
> 
> What I could suggest as the way I'd try figuring it out here is this.
> 
> Try using the --fn/--font option with other more traditional qt apps.  In
> particular, if you have any non-kde qt-based apps (based on the same qt
> major version, right now qt4 and qt5 based apps are out, and a test on a
> qt5 app while kdialog is based on qt4, or the reverse, a qt5 based kdialog
> with a test on a qt4 app, won't be particularly helpful), try using the --
> font option on them, and see if you can get it to work there, where it's
> much more likely not to be overridden.
> 
> Once you get it working there, you'll know the font name pattern to use,
> and can try the same thing on kdialog.
> 
> It may also be that in the kde environment, kde overrides the normal qt
> font options, and may override it here, as well.  So it may also be worth
> trying that qt-based non-kde app in a non-kde desktop environment,
> perhaps failsafe, if your distro provides such a login option, or gnome
> or one of the gtk-based desktop environments.  Again, if you get it
> working there, you can try the font name pattern that worked there under
> kde to see if it works under kde as well.
> 
> 
> Meanwhile, my google-foo might be a bit better than yours.  Searching
> on...
> 
> qt command line option "--font"
> 
> ... (the quotes around font being critical), the first hit is to a page
> of qt 4.8 embedded documentation, with command-line-options down the
> page.  Here's a direct link:
> 
> http://doc.qt.io/qt-4.8/qt-embedded-running.html#command-line-options
> 
> The first option listed there is -fn .  It says "The font should be
> specified using an X logical font description."  However, that doesn't
> tell me a whole lot.  The example isn't a whole lot better in that it
> doesn't show size or weight or anything, but here it is:
> 
>  -fn helvetica
> 
> Two things to note about that:
> 
> 1) -fn not --fn.  So try it with just one -.  It might just work, or
> again, it may be that kde adapted that and it really is two -- under 

Re: [kde] how to use kdialog --font ?

[Duncan]

ianseeks posted on Tue, 27 Oct 2015 08:05:49 + as excerpted:

> On Monday 26 Oct 2015 20:31:48 J. Leslie Turriff wrote:
>> I want to use kdialog to display a table of values, and to make 
>> the output columns line up, the simplest way is to display the data
>> with a monospace font, e.g. DejaVu Sans Mono.  kdialog --help-qt
>> shows option -fn  or --font , but does not describe the
>> format of the  string.

[snip the details as not relevant to this particular subthread]

> I've just done a "kdialog ?" and there is no reference to a "--font"
> and thats using this version
> Qt: 4.8.7
> KDE Development Platform: 4.14.12
> KDialog: 1.0

The two of you are using two different sets of help output.

For most kde executables,  --help (or  ?, which was new 
to me) will output help text in two sections.  The first section is 
generic parameters such as --help itself, the section is command-specific 
options, followed by command specific arguments.

You (ianseeks) were looking at the ?/--help output and apparently focused 
on the (command specific) Options section, which, you correctly noted, 
contains no --font or similar option.

However, the OP (J Leslie Turrif) specifically mentioned help output 
found under --help-qt, which is qt-specific help that generally applies 
to all qt-based programs, pretty much regardless of what they actually 
are.  Similarly, --help-kde is kde-specific help that generally applies 
to all kde-based programs, pretty much regardless of what they are.
--help-all should list all the above, the generic options, followed by 
the command specific options, followed by the qt options, then the kde 
options, and finally the command arguments.

And it can be observed that --help-qt (as well as --help-kde and
--help-all) is indeed listed under the generic options (at least for my 
kdialog 1.0, on kde 4.14.13, on qt 4.8.7) section when invoking
kdialog --help or kdialog ? .

And, --help-qt (and the qt section under --help-all) does indeed list 
both --fn and --font, as synonyms for each other.


So... the --fn/--font option is a generic qt option, that should work 
with most qt-based apps, and is actually a generic option included due to 
the app being qt-based, even if in some cases --fn/--font won't apply, or 
will be overridden by something else.


So far so good.  But I don't have an answer to the original question, 
because while I've occasionally used some other qt option and had it 
work, I've never needed to use that one.  Also, kdialog is a rather 
unusual application, and I'm not /entirely/ sure it honors that 
particular qt option at all.

What I could suggest as the way I'd try figuring it out here is this.

Try using the --fn/--font option with other more traditional qt apps.  In 
particular, if you have any non-kde qt-based apps (based on the same qt 
major version, right now qt4 and qt5 based apps are out, and a test on a 
qt5 app while kdialog is based on qt4, or the reverse, a qt5 based kdialog 
with a test on a qt4 app, won't be particularly helpful), try using the --
font option on them, and see if you can get it to work there, where it's 
much more likely not to be overridden.

Once you get it working there, you'll know the font name pattern to use, 
and can try the same thing on kdialog.

It may also be that in the kde environment, kde overrides the normal qt 
font options, and may override it here, as well.  So it may also be worth 
trying that qt-based non-kde app in a non-kde desktop environment, 
perhaps failsafe, if your distro provides such a login option, or gnome 
or one of the gtk-based desktop environments.  Again, if you get it 
working there, you can try the font name pattern that worked there under 
kde to see if it works under kde as well.


Meanwhile, my google-foo might be a bit better than yours.  Searching 
on...

qt command line option "--font"

... (the quotes around font being critical), the first hit is to a page 
of qt 4.8 embedded documentation, with command-line-options down the 
page.  Here's a direct link:

http://doc.qt.io/qt-4.8/qt-embedded-running.html#command-line-options

The first option listed there is -fn .  It says "The font should be 
specified using an X logical font description."  However, that doesn't 
tell me a whole lot.  The example isn't a whole lot better in that it 
doesn't show size or weight or anything, but here it is:

 -fn helvetica

Two things to note about that:

1) -fn not --fn.  So try it with just one -.  It might just work, or 
again, it may be that kde adapted that and it really is two -- under kde.  
Trying it both ways is the only way to know for sure.

2) If you have the helvetica font installed, you can try the example 
verbatim, and if it works, go from there.  If it doesn't, again, try a 
different qt-based app, to be sure that kdialog isn't overriding it for 
some reason.


Another hit, this one in the documentation for pyqt, adds an interesting 
caveat:

-fn or -font font, defines the application font. 

Re: [kde] how to use kdialog --font ?

[Kevin Krammer]

On Tuesday, 2015-10-27, 11:29:44, Stephen Dowdy wrote:

> I'm not sure if there's a way to identify the Qt components in use
> ​ by 'kdialog'​
> .
> ​  (something like firefox' web developer "Inspect" would be awesome)​

Gammaray

Very likely packaged by your distribution.

Cheers,
Kevin

-- 
Kevin Krammer, KDE developer, xdg-utils developer
KDE user support, developer mentoring


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Re: [kde] how to use kdialog --font ?

[Stephen Dowdy]

Looks like 'kdialog' supports Qt Style Sheets.
I haven't played with these before.  Appears to be a variant of CSS.

$ kdialog --stylesheet ~/tmp/kdialog.qss  --msgbox "$(lsblk)"
$ cat ~/tmp/kdialog.qss

* {
font-family: monospace;
font-size: 16;
}

>

I'm not sure if there's a way to identify the Qt components in use
​ by 'kdialog'​
.
​  (something like firefox' web developer "Inspect" would be awesome)​

​

​I grabbed a copy of XnView's stylesheet file:  "​XnView/UI/style_sheet.qss"
to start with.  using it unchanged renders kdialog with a nice black
background,
but not monospaced, of course.

That's probably the best way to handle kdialog's failings in other areas.

There's also a Style "Theme" (--style).  I guess i have to look into this
stuff more.
(this is more like the older X AppDefaults configurations to style X11
applications)

--stephen

-- 
Stephen Dowdy  -  Systems Administrator  -  NCAR/RAL
303.497.2869   -  sdo...@ucar.edu-  http://www.ral.ucar.edu/~sdowdy/
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Re: [kde] how to use kdialog --font ?

[Stephen Dowdy]

On Tue, Oct 27, 2015 at 12:28 PM, Kevin Krammer  wrote:

> > I'm not sure if there's a way to identify the Qt components in use
> > ​ by 'kdialog'​
> > .
> > ​  (something like firefox' web developer "Inspect" would be awesome)​
>
> Gammaray


​Kevin,

thanks!   Package "gammaray" on "Debian Jessie".  Looks like it might take
some research on using it effectively (it finds a kdialog, but can't
connect to it (greyed out in selection widget).  and:

$ gammaray --pid 9236
No probe found for ABI qt4.8-x86_64

$ kdialog --version
Qt: 4.8.6
KDE Development Platform: 4.14.2
KDialog: 1.0

$ aptitude show gammaray
Package: gammaray
State: installed
Version: 2.1.0-3+b1
Depends: libc6 (>= 2.14), libcgraph6, libgcc1 (>= 1:4.1.1), libgvc6,
libqt5core5a (>= 5.3.0), libqt5designer5 (>= 5.0.2), libqt5gui5 (>= 5.2.0),
libqt5network5 (>= 5.0.2), libqt5printsupport5 (>=
 5.2.0), libqt5script5 (>= 5.0.2), libqt5scripttools5 (>= 5.0.2),
libqt5svg5 (>= 5.0.2), libqt5webkit5 (>= 5.0.2), libqt5widgets5 (>= 5.2.0),
libstdc++6 (>= 4.4.0), qtbase-abi-5-3-2
...

Dunno if 'gammaray' for Qt5 can operate on a Qt 4 app?

Ah, never mind...

# aptitude install gammaray-probe-qt4

;)  (i now see some UI layout goodness)

thanks, again,
--stephen​



-- 
Stephen Dowdy  -  Systems Administrator  -  NCAR/RAL
303.497.2869   -  sdo...@ucar.edu-  http://www.ral.ucar.edu/~sdowdy/
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Re: [kde] how to use kdialog --font ?

[Kevin Krammer]

On Tuesday, 2015-10-27, 13:05:15, Stephen Dowdy wrote:

> Ah, never mind...
> 
> # aptitude install gammaray-probe-qt4
> 
> ;)  (i now see some UI layout goodness)

:)

CTRL+SHIFT+Left Click on any part in the observed application (in your case 
kdialog), should jump to that object in Gammaray's tree.

You can then also adjust properties at runtime, e.g. the stylesheet property.

See http://doc.qt.io/qt-4.8/stylesheet-examples.html for small example 
stylesheets.

Cheers,
Kevin
-- 
Kevin Krammer, KDE developer, xdg-utils developer
KDE user support, developer mentoring


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[kde] Qt stylesheets : per-user default qss capability? (was Re: how to use kdialog --font ?)

[Stephen Dowdy]

On Tue, Oct 27, 2015 at 1:24 PM, Kevin Krammer  wrote:

>
> CTRL+SHIFT+Left Click on any part in the observed application (in your case
> kdialog), should jump to that object in Gammaray's tree.
>
> You can then also adjust properties at runtime, e.g. the stylesheet
> property.
>
> See http://doc.qt.io/qt-4.8/stylesheet-examples.html for small example
> stylesheets.
>
>

​Kevin,​

Great stuff, exactly what i was looking for.

​'strace' reveals no default search for .qss files (at least in
'kdialog').  ​
​So, is there a way to create a user stylesheet that all Qt apps will
reference?   One that can be obtained via Environment Variable or perhaps
an entry (or several) in Trolltech.conf?
( adding a key "style=windows" to the INI group "[Qt]" in Trolltech.conf
will do the same (i think) as setting your KDE default Qt Widget style, but
it'd be nice to have a stylesheet key, which i can't find reference for)

QT_STYLE_OVERRIDE="windows" kdialog --msgbox "$(lsblk)"
doesn't seem to work, so maybe that's a Qt5 only thing  (kdialog --style
"windows", however, does work as expected)


If so, one could create a "userStyle.qss" that had stuff like:​

​
KDialog > QWidget > QLabel {
font-family: monospace;
font-size: 16;
background-color: rgb(40,40,40);
color:rgb(220,220,220);
}

​which, theoretically should only apply to KDialog (executable, or i think
there's an API?)
(unfortunately, the labels in KDialog don't have class/id AFAICT, so you
hit all of them)

But having one place to tweak styles would be useful.

I suppose this is getting low-level enough that reliance from one release
to another might get "iffy".

thanks,
--stephen


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303.497.2869   -  sdo...@ucar.edu-  http://www.ral.ucar.edu/~sdowdy/
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Re: [kde] SLOW KDE login after update

[Rex Dieter]

CS DBA wrote:

> Created a new user, login still slow
> 
> anyone know which config file is the issue?

kf5-kservice is (probably) the culprit, get kf5-5.15.0,
https://bodhi.fedoraproject.org/updates/FEDORA-2015-176062173b

-- Rex

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