Re: firewall-applet GTK+ -> Qt

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On 07/01/2015 06:18 AM, poma wrote:
On 29.06.2015 14:03, Thomas Woerner wrote:
On 06/17/2015 02:52 PM, poma wrote:
On 16.06.2015 15:11, Thomas Woerner wrote:
On 06/16/2015 01:28 PM, poma wrote:
On 15.06.2015 13:12, Thomas Woerner wrote:
On 06/15/2015 12:53 PM, poma wrote:
# yum install firewall-applet
...
====================================================================================================
     Package                      Arch       Version                                  Repository   Size
====================================================================================================
Installing:
     firewall-applet              noarch     0.3.14.1-1.fc23                          rawhide      96 k
Installing for dependencies:
     kde-filesystem               x86_64     4-51.fc22                                rawhide      53 k
     libqzeitgeist                x86_64     0.8.0-13.fc23                            rawhide      75 k
     phonon                       x86_64     4.8.3-4.fc23                             rawhide     204 k
     phonon-backend-gstreamer     x86_64     2:4.8.2-3.fc23                           rawhide     147 k
     proj                         x86_64     4.9.1-2.fc23                             rawhide     209 k
     python3-PyQt4                x86_64     4.11.4-1.fc23                            rawhide     3.1 M
     python3-sip                  x86_64     4.16.8-1.fc23                            rawhide      99 k
     qt-mobility-common           x86_64     1.2.2-0.20.20140317git169da60c.fc23      rawhide      39 k
     qt-mobility-location         x86_64     1.2.2-0.20.20140317git169da60c.fc23      rawhide     584 k
     qt-mobility-sensors          x86_64     1.2.2-0.20.20140317git169da60c.fc23      rawhide     125 k
     qtwebkit                     x86_64     2.3.4-7.fc23                             rawhide      10 M

Transaction Summary
====================================================================================================
Install  1 Package (+11 Dependent packages)

Total download size: 15 M
Installed size: 56 M
Is this ok [y/d/N]:


firewalld-0.3.14
https://lists.fedorahosted.org/pipermail/firewalld-devel/2015-June/000175.html

firewall-applet:
       - new version using Qt4 fixing several issues with the Gtk version


What were the actual issues with the GTK+ version?

There have been several issues with the gtk applet:

1) The gtk statusicon widget is deprecated in gtk3, will be removed
soon. Going back to gtk2 is not a solution.
Xfce CORE is still GTK+ 2 based, therefore -stay- on GTK+ 2 -is- a solution. ;)
The old applet was using gtk3 since 2012. There are issues with gtk2 and
introspection. The use of pygtk was also not an option because of
missing python3 support, it also pulled in gobject, which then
conflicted with dbus.

2) The status icon was sometimes invisible without an error, warning or
any way to find out why, especially in Gnome3.
No problemos within the Xfce, works OK.

Yes, there have not been issues in Xfce for also all the time. But there
have been lots of issues with Gnome3. I had work arounds in the applet,
but those were not working with all Gnome3 versions.

3) The status icon was sometimes not showing the icon without an error,
warning or any way to find out why, especially in Gnome3 and gtk based
desktop environments.
No problemos within the Xfce, works OK.

See above.

4) With KDE5 there is no support for old-style system tray icons
anymore. Only Qt based applets and AppIndicator applets are supported,
but AppIndicator has the same issues with the icons in Gnome3 and other
gtk based desktops.

That's right, the Application Indicators aka "AppIndicator" is the Canonical/Ubuntu/Unity technology.

The Qt applet is working in KDE5, Gnome3, Xfce, Mate and others
supporting system tray icons without any issues for me. Therefore this
is the way to go.

There are some issues, at least within the Xfce - "shrivel" systray icon.
See "firewall-applet-Qt4-shrivel-systray-icon.png"

Same crap happens as with the vlc systray icon, again Qt4.

I do not see this in Xfce. Do you have special panel settings?

I've caricatured with the size, but the essence is the same:
http://goo.gl/Gm4ffO
Screencast/teeny-weeny.webm

I do not have issues with the size of the Qt applet in Xfce. I even
changed the size of the panel on the fly and it was adapting to the
current tray size. But please remember that there is a max size of tray
applets within Xfce. You can simply recognize that no applet gets bigger
than about 32 pixels.

There might be an issue with some of the themes though. Not all themes
in Xfce and gtk are behaving the same. Which theme are you using?

Additionally while doing the recode in Qt I realized that the UI
handling with Qt is much simpler and more predictable. I plan to port
firewall-config also over to Qt for one of the next releases.

Qt5 - ready steady?

There is also a Qt5 version, but it behaving strange in KDE5.

Bug report?
It's a matter of time when you'll do it anyway in Qt5, right?
Yes, this should be a matter of time. For now it was important to get it
running.

"Qt 4.8.7 Released - Marks The End Of Qt4"
http://www.phoronix.com/scan.php?page=news_item&px=qt-4.8.7-qt4-update-released


https://github.com/t-woerner/firewalld/commit/2625806
New firewall-applet version using Qt
- Dropped shields up/down mechanism, was not optimal.

Please explain what was -not optimal-, related to "Shields" functionality.

Shields-up/-down was settings the default zone in firewalld. There is no
runtime only setting for the default zone, therefore it was setting it
for the whole system in a persistent way.

If there is a request, I will add it to the new applet.

This should be studied.
Here is the commit that adds this back:
https://github.com/t-woerner/firewalld/commit/646d5ceeac51ccd3d473e6036ddf3f1d45b9b961

$ rpm -q firewall-applet
firewall-applet-0.3.14.1-1.fc23.noarch

$ rpm -ql firewall-applet | grep man
/usr/share/man/man1/firewall-applet.1.gz

$ man /usr/share/man/man1/firewall-applet.1.gz
...
GSETTINGS
firewall-applet has additional settings to adapt the look and feel.
The used backend depends on the distribution and can be either dconf or GConf.
The path to the settings is org.fedoraproject.FirewallApplet.
You can use dconf-editor or gconf-editor to see and modify them.
The following settings are supported:
...
show-inactive
...
blink
...
blink-count

Is this manual a bit outdated?
    Oh yes, I forgot to adapt the man page. Thanks for finding this one.

https://github.com/t-woerner/firewalld/commit/5b47854
Dropped applet gschema remain: org.fedoraproject.FirewallApplet.gschema.xml

BTW
dconf write /org/fedoraproject/FirewallApplet/show-inactive true
dconf write /org/fedoraproject/FirewallApplet/blink true
dconf dump /org/fedoraproject/FirewallApplet/
[/]
show-inactive=true
blink=true

What is equivalent to this, now in Qt4 form?

As far as I know there is no command line tool for this. You can
create/change ~/.config/firewall-applet/firewalld.conf

The names here are bad, so I hanged them to
~/.config/firewall/applet.conf:
https://github.com/t-woerner/firewalld/commit/f137568077af9a11823cdee816f80f16ff6deec8



$ cat ~/.config/firewall/applet.conf
[General]
notifications=false  <-- works OK / also via the applet menu
show-inactive=true   <-- works -but- applet restart is needed to apply change - why?
blink=true           <-- broken - does not work at all
blink-count=10       <-- brokne - see "blink"

Tested with:
firewall-applet-0.3.14.2-1.fc22.noarch
Here is the fix for the not working settings:
https://github.com/t-woerner/firewalld/commit/ca9597c69a6f8270fd7e3452ae93fec0187a3aaa

Please implement also a system-wide config, e.g.
/etc/firewall/applet.conf [General] ...
Here are commits that adds global settings and settings reload on
change:
https://github.com/t-woerner/firewalld/commit/2a701feaaf229fec011549677b464ca9042137fd

There are also other changes and fixes for firewall-applet in the master
branch since 0.3.14.2:

Fix Ok button sensitivity in dialogs:
https://github.com/t-woerner/firewalld/commit/7c03a3477ddfa6da85361a09f9aac52d3896a7a9

Reworked about dialog to have a more common look:
https://github.com/t-woerner/firewalld/commit/1c697e0a59bcd8d6d370813631fbb1d7a628e93c

Man page adaption:
https://github.com/t-woerner/firewalld/commit/e1fe9241b777c111a4bbac0eee24935fe5028463

Added defaults for shields-up/down, fixed blink default:
https://github.com/t-woerner/firewalld/commit/ff9e6705ddd010745bc2435a10ae00789ee39ef3

Regards,
Thomas

You can see for yourself how "well" it works:
http://goo.gl/Gm4ffO
Screencast/eeny-meeny.webm

firewalld / Qt firewall-applet - git 67e40c0 Jun 29, 2015

Please have a look at https://github.com/t-woerner/firewalld/commit/90de0a4ec3e9866bf10f17d16320146bd200e035

This is fixing the file watch. QFileSystemWatcher is simply not working all the time. Now the settings are updated on changes in the global config file in /etc/firewall and in $HOME/.config/firewall. Also if the files are added or removed.
GTK+ firewall-applet is milk and honey compared to it.


Gtk.StatusIcon is deprecated and will be removed soon. Relying on it till it is removed is leading in not being able to use the applet suddenly. Also it is not possible to down-port the applet to Gtk2, because of conflicts with gobject-introspection. The only solution is to move away from Gtk.

I will have a look at the size issue with the Qt applet again. It really seems like this is Gtk theme dependent. I ran into those issues with Gtk several times before.
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