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System & Utilities

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Fathi Boudra (fabo): VLC backend for Phonon 0.2.0

System & Utilities

The VLC backend for Phonon is released!

You can download it from here:

33a1ca367989e306507ea633c99b8df5 phonon-backend-vlc-0.2.0.tar.gz

Thanks to all contributors and to the VLC developers.

Подробнее | Разместил: Planet KDE | Дата: 27.07.2010 | Прочитано: 572 | Комментарии

Lydia Pintscher (Nightrose): KDE SC 4.5 release parties – let’s get them started!

System & Utilities

I’m back from conference touring (which was awesome btw – more about that later) and Tom reminded me that the release parties for 4.5 are not planned yet. And the release is planned for August 4th, so in a bit more than a week. OMG!

Clearly it is time to fix this situation and give the world a chance to meet some cool KDE people. So go to the 4.5 release party planning page and check if there is one near you already. If there is one then sign up for it and have fun. If there is none yet it’s time to start one. Pick a date and time (preferably within 3 weeks of release) and reserve a place in a local restaurant, bar, meeting room, university, whateverelsefits. Add it to the wiki page, spread the word and then have lots of fun.

Of course it’s my pleasure to announce the first of hopefully many release parties: Stuttgart, Germany on 7th of August. Exact place and time is still to be determined. Check the wiki page more...

Подробнее | Разместил: Planet KDE | Дата: 27.07.2010 | Прочитано: 614 | Комментарии

Boudewijn Rempt (boud): Last Week in Bangalore

System & Utilities

Yeah, I know, I'm riffing on Last Week in Krita and Last Week in KOffice... Marijn and me have been in Bangalore for a week now. I think that, code-wise, we've made really good progress. I've completed most of the work to make KOffice's flake library flexible enough that a canvas widget can be implemented either as a QWidget or a QGraphicsWidget. Marijn has implemented a QGraphicsWidge-based canvas for KSpread, and I've done the same for KWord -- and now we're testing that, and that will probably mean we'll have to fix some stuff in our canvas implementations, of course. And Marijn has also been working on fixing memcheck errors and performance issues, notably a recent regression in loading speed in KSpread. Probably caused by the new text-on-shape feature.

Friday afternoon, we met with the students again. They've been doing some really good work. I've already written about a lot of it in my Last Week in KOffice blog, but this time they demoed it to us. Two new students are working on a more...

Подробнее | Разместил: Planet KDE | Дата: 26.07.2010 | Прочитано: 1059 | Комментарии

Lukas Tvrdy (lukast): Week 29: Performance and bugs

System & Utilities

This week I continued to work on fixing Krita. I started with outlines. When you fix something, you break something other sometimes. It happened this time. Duplicate brush known as clone tool in Gimp is somehow special regarding the outlines. It is showing outline even if you are not in outline mode. It is also the only brush engine, that needs to know the position of the input device (mouse/tablet) and my new API with QPainterPath did not included this information. I fixed it, changed the API and also use the position of the device for other brush engines. That resulted in more simple code in the freehand tool. Also I simplified the way you code outlines. Before you had to specify the area of the outline in separate function so that it is erased correctly when redrawing the canvas. Now I use bounding box of the QPainterPath. One bonus of my work is this one: When you wanted to duplicate some area, first you have to setup origin point with CTRL+click. This was outlined by cross. Now it is more...

Подробнее | Разместил: Planet KDE | Дата: 26.07.2010 | Прочитано: 865 | Комментарии

Colin Guthrie (coling): Speak[er Setup] Now, or Forever hold your Peace.

System & Utilities

Well it's taken me a little time to commit this work, but here it is. This is the fruits of my labour from the KDE Multimedia Sprint earlier this year.

As well as taking part in various discussions, I was able to spend some time cooking up a UI to control the configuration of PulseAudio and the various cards attached.When adding PulseAudio support to the various parts of KDE that need it (Phonon, KMix), there was an important part of the puzzle missing: a card profile selector, and a sink/source port selector. I had always intended to include this functionality somewhere, but the KMix framework didn't really allow for it neatly (I could have created a separate dialog of course but it didn't quite feel right).

The eagle eyed readers may have seen a sneak preview of this feature when looking at the KDE-specific help page I wrote up on the PulseAudio website. So I give you this: the Speaker Setup tab in System Settings.

Подробнее | Разместил: Planet KDE | Дата: 26.07.2010 | Прочитано: 636 | Комментарии

Paulo R

System & Utilities
Hi, all.

Last week I said to you that HUPnP did not recognize UPnP internet gateway devices in the network. Now I think I can say it used to not recognize. :-)

Seems like Tuomo's patch fixed the problem and now the Solid UPnP backend is able to "see" my wireless router and finally invoke the UPnP actions available on it (like to do some port redirect and toggle the internet access, for instance). I have made some tests and seems like the action invocations are working well from the HControlPoint instance in the UPnPDeviceManager. Now it's time to refine the API and add more operations, probably.

However, "the world is cruel". This week Nikhil and Bart pointed to me and Kevin some problems with the media server stuff. Besides some mistakes on the HUPnP use from my part, seems like there is more...

Подробнее | Разместил: Planet KDE | Дата: 26.07.2010 | Прочитано: 509 | Комментарии

Dominik Haumann: The Mission of KDE’s Wikis

System & Utilities

KDE has three wikis: TechBase, Community and UserBase. The separation has the following meaning according to

  • TechBase: The primary place for high quality technical information about KDE targeted at 3rd party developers, ISVs and system administrators.
  • Community: The working area for the KDE community. It provides a place for sharing information within the community and coordinating community teams.
  • UserBase: The home for KDE users and enthusiasts. It provides high quality information for end users on how to use KDE applications.

So TechBase is a source of mostly technical information. This includes step-by-step howtos for all sorts of KDE development as well as the feature plans and schedules for KDE releases and so forth. It’s mainly static content. Think of a howto for a Plasma Widget or a howto for building KDE. The content usually is valid for a long time, mostly even for years. For those of you longer in the KDE project, TechBase more...

Подробнее | Разместил: Planet KDE | Дата: 26.07.2010 | Прочитано: 611 | Комментарии

Luca Beltrame (einar77): OCS and KDE Forums – work continues

System & Utilities

With my last entry, I announced the start of the work for an OCS library for the KDE Community Forums. Today I’d like to blog again about the recent developments.

First of all, now there isn’t one, but two Python modules:

  • ocslib, a pure Python module that can be used to interface with OCS-based forum systems;
  • ocslibkde, a PyKDE4 based module that can be used to interface with OCS-based forum system in KDE applications.

Currently ocslib supports reading and posting, while ocslibkde only reading (as of now). Both can be retrieved from the kde-forum-mods repository under the ocs-client subdirectory. The Python lib needs unit-testing, then I’ll be able to push a tarball soon for people to test (but you can always check out the Git repository). With regards to the PyKDE4 library, I plan on making a proof-of-concept plasmoid soon that shows how to use the API.

Speaking of API, here are some examples using ocslib:

>>> from ocslib import service# Connect to OCS
>>> ocs_service = ocslib.service.OCService("") more...

Подробнее | Разместил: Planet KDE | Дата: 26.07.2010 | Прочитано: 480 | Комментарии

Marc Mutz: BC/SC Gotcha: reimplementing a virtual function

System & Utilities

This might surprise you: Adding a reimplementation of a base class virtual function to a derived class might be binary incompatible. Here’s why.

Assume you have the following classes in a library that maintains binary compatibility across releases:

// release 1.0
struct base { virtual f() {} };
struct derived : base {}; // doesn't reimplement base::f()

And in an application using the above library:

derived d;
d.f(); // ok, calls base::f()

Q: Is d.f() a virtual function call?
A: No. Not if your compiler is any good.

When the compiler can prove the dynamic type of an object, it will resolve the polymorphic calls at compile time. In other words: It will de-virtualise the call.

In our case, the compiler can prove that d‘s dynamic type is derived, so it just inserts the function call to base::f(). Don’t believe me? Ask your compiler:

struct base {
virtual ~base();
virtual void f() const;

struct derived : base {
//void f() const;

void foo1( derived d ) { more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2010 | Прочитано: 599 | Комментарии

Andreas Demmer (ademmer): account

System & Utilities

For everyone that only knows my Twitter account @ademmer: I use to blog with the same account name on the free microblogging service, but here solely in English and only about Linux/KDE related topics. Follow me and end the mess of this account having only three followers until now!

Don’t be afraid having to install new software: Most Twitter-Clients can already deal with KDE Users may use the excellent Choqok for example!

Подробнее | Разместил: Planet KDE | Дата: 25.07.2010 | Прочитано: 506 | Комментарии

Ryan Rix (PhrkOnLsh): Random Hair Brained Idea: Universal Chat bouncer

System & Utilities

For quite a while there have been a lot of different softwares which let you connect an IRC client to them, so that you can always be online (like in irssi) but also enjoy all the benefits of a GUI client (like Konversation, Xchat, etc)… They’re a nice happy medium between the two extremes, and are generally regarded as a Good Thing. And indeed, they are. I run irssi and connect to it using konversation via a module called irssiproxy. (/load proxy, on any distro package should work fine as its an official module)

But what I lack is a bouncer for non-IRC modes of communication: AIM, MSN, XMPP and Yahoo! primarily. I have yet to find one… yes, there is bitlbee, which can be used just fine through any number of BNCs, but I want to be able to use Kopete for that. IRC queries for everyone and their dog simply don’t "work" for me… it becomes hard to manage in Konversation, and Kopete’s UI seems better suited, imo.

So, idea: create a universal IM proxy, more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2010 | Прочитано: 794 | Комментарии

Gary Steinert (gsteinert): A little trick to save a lot of repeated code

System & Utilities Ever get tired of copying and pasting the same few lines of code over and over
to perform a list of simple comparisons?

I'm talking about the situation where you need to convert, usually a string to
another data type based on the value of the string. Something like converting a
string representation of a number ("three") into the corresponding integer value
(3). You may try something like the following code:

void stringToInt( QString value )
if( value == "one" )
return 1;
else if( value == "two" )
return 2;
else if( value == "three" )
return 3;
else if( value == "four" )
return 4;
else if( value == "five" )
return 5;
else if( value == "six" )
return 6;
else if( value == "seven" )
return 7;
else if( value == "eight" )
return 8;
else if( value == "nine" )
return more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2010 | Прочитано: 674 | Комментарии

Tom Albers: [sysadmin] Status Update

System & Utilities

We thought it might be a good idea to give everyone a new status update about the progress we are making regarding the conversion to Git. This report has been put together by a couple of members of the sysadmin team. Let’s start with the tasks done in the past weeks:

  • SSH Key Management itself can be done in Gosa – but the backend to get it live with gitolite is still to be done (see current todo list below)
  • Integration of Reviewboard with LDAP has been accomplished in a testing instance successfully. A script has also been written to sync data such as names and email addresses from LDAP into both Redmine and Reviewboard.
  • Gosa has begun to be themed using the style, chihuahua. Ingo Malchow is brave enough to work on this part.
  • Ben Cooksley has been working on making some additional forms for the initial account registration. Basically the new workflow will be like this:
    1. User can register, and can use their account immediately after verifying their email address.
    2. User immediately gets more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2010 | Прочитано: 585 | Комментарии

Peter Penz: Search Improvements

System & Utilities
KDE SC 4.5 will be out soon and as mentioned in an earlier blog entry, for Dolphin this release has been used to do bugfixing, polishing and internal cleanups of the code. I'm quite happy with the result, however last week I decided to have some fun again and have started to improve the search interface of Dolphin (will be part of KDE SC 4.6).


In KDE SC 4.3 a searchbox has been added to Dolphin's toolbar. It used Nepomuk to do the searching:

Although it was already possible to search also for tags, ratings and other kind of data, it was nearly unfeasible for users to discover this functionality. In KDE SC 4.4 I tried to improve this by showing some search options as soon as the user clicks into the searchbox: more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2010 | Прочитано: 555 | Комментарии

Albert Astals Cid (TSDgeos): Bug your distro to package lcms2

System & Utilities Yesterday i tried poppler with lcms2 instead of the regular lcms1 and some pdf give a speed improvement of 10%, the problem is that it seems that almost no distro packages it so we can't really depend on it. So please if you want a "free" speed improvement in poppler bug the packagers of your distro to package lcms2

Подробнее | Разместил: Planet KDE | Дата: 24.07.2010 | Прочитано: 533 | Комментарии

Rohan Prabhu (thirtySeven): [KWin Scripting] Window tabbing and a new structure

System & Utilities

It’s been a very long time since I made a post, mostly because my college started this week which meant I lost around a week in traveling, registration and the whole process of ’setting in’. Either ways, since my last post, a lot of changes in KWin. Actually, a very important change has been made in the entire structure of how clients are generated and currently things are looking very neat and much more systematic.

Clients and toplevels

In KWin, the Client object inherits from Toplevel. Toplevel is the class for all clients, whereas Client handles managed clients. Now, I could just directly wrap Client and not really care about Toplevel, but doing these things separately enables me to reuse the code for Toplevel for unmanaged clients as well if I plan to. I have always been doing these two things separately, but my previous method was pretty tacky.

Previously: Earlier, the SWrapper::Client object and SWrapper::Toplevel classes were just standalone classes that both used to generate QScriptValues. So, inside the SWrapper::Client::generate function:

Подробнее | Разместил: Planet KDE | Дата: 24.07.2010 | Прочитано: 724 | Комментарии

Flavio Castelli: Fast user switch plasmoid improvements

System & Utilities

Just a quick note, I released a new version of the fastuserswitch plasmoid. This new release implements all the improvements suggested by the users plus some minor fixes.

Code can be downloaded from here. openSUSE packages are already available on the build service.

These are some screenshots illustrating fastuserswitch’s new features.

fastuserswitch01 fastuserswitch02 fastuserswitch03

Подробнее | Разместил: Planet KDE | Дата: 24.07.2010 | Прочитано: 488 | Комментарии

Dennis Nienh

System & Utilities

KDE SC 4.5 is about to be released soon -- just two weeks to go. We will have some great new features in Marble, your favorite virtual desktop globe. Hopefully we'll have a visual changelog ready for the release summarizing the new and noteworthy.

While releases need their time to stabilize, development continues distributed in git repositories and in subversion trunk. Siddharth Srivastava is making great progress on his GSOC project Marble to Go with a major part of his work already in reviewboard. I'm sure he'll give an overview in his blog when it hits trunk. I'll focus on a different topic today. Marble's routing capabilities rely on OpenRouteService in KDE SC 4.5. Although it works great in most situations relevant to me, there are two major disadvantages: The OpenRouteService integration in Marble requires Internet access to retrieve routes and OpenRouteService itself is limited to Europe.

Recently Nic Roets announced a new routing webservice demo which can be accessed via a HTTP API as well. It is similar to more...

Подробнее | Разместил: Planet KDE | Дата: 24.07.2010 | Прочитано: 632 | Комментарии

Dominik Haumann: Join Kate Development!

System & Utilities

The Wheel of Time turns… meaning that the Kate Project has quite along history by now. The Kate Project was started back in December 2000, so it’s almost 10 years old. Development sometimes continues with a fast pace; and at other times there is almost no progress for weeks. But all in all, looking back at those 10 years, we can proudly tell you that the project is very much alive. Let’s take a look at the traffic of our mailing list:

The traffic itself does not say much about the development. It probably tells us that there are quite a lot of people using Kate and reporting wishes and bugs. This is a good thing :) The commit statistics for Kate, KWrite and the KTextEditor interfaces look like this:

Before 2000, Kate did not exist yet. Instead, so these commits come from more...

Подробнее | Разместил: Planet KDE | Дата: 23.07.2010 | Прочитано: 583 | Комментарии

David Faure (dfaure): Mimetypes are out of ksycoca

System & Utilities

During the Akademy kde-on-mobile discussion, K

Подробнее | Разместил: Planet KDE | Дата: 23.07.2010 | Прочитано: 606 | Комментарии

Christoph Cullmann (cullmann): MovingRanges moving on ;)

System & Utilities

As with any new code, during adoption bottlenecks show up.

For example the rendering of text lines with many ranges inside was quiet slow. This is now partly addressed by Milian Wolff, thanks a lot.

An other bottleneck was the assumption, that it is fast enough to hash the ranges just by their block and iterate over all of them to search the ranges matching a specific line. This does scale well enough for KatePart itself, but KDevelop creates multi-thousand ranges for small documents. To improve this, an internal special mapping was implemented by David Nolden for ranges which don’t span more than one line. For them an efficient line => range mapping is easy and not to costly.

If both changes are tested a bit more, they can be backported in time for KDE 4.5, which will allow a good usability of KatePart for KDevelop once again after the rewrite, given other bugs are fixed.

Подробнее | Разместил: Planet KDE | Дата: 23.07.2010 | Прочитано: 489 | Комментарии

Guillermo Amaral (gamaral): KDEMU - Thomas McGuire - KMail

System & Utilities

KDE and the Masters of the Universe

Check out the new episode of KDE and the Masters of the Universe featuring the International Man of Mystery Thomas McGuire, “KMail Maintainer

Don’t forget to download this episode or to subscribe to this show.


OGG FeedMP3 Feed

Permalink | Leave a comment  »

Подробнее | Разместил: Planet KDE | Дата: 23.07.2010 | Прочитано: 604 | Комментарии

Boudewijn Rempt (boud): Back in Bangalore

System & Utilities Following hot on the heels of a week of intensive KOffice performance analysis in Helsinki and a great Akademy, I'm in Bangalore again for two weeks. Not specifically to meet again with the Bangalore interns working on FreOffice, but rather to work with Nokia on mobile KOffice. Marijn Kruisselbrink is here together with me, and when we leave, Jos van den Oever will relieve us.

I'm happily hacking away on a project that was started at the last KOffice sprint in Essen: making KOffice more flexible by allowing other canvas types than QWidget-based ones, for instance, based on QGraphicsView. Lots of interesting challenges, and also some quite nice progress already.

It's the rainy season, as you can see from this picture taken from the rooftop of the Nokia building:
From Bangalore-july

Instead of a boring hotel room with four attendants to serve me with a beer, we've hired an apartment in the Orchard Suites, about ten minutes by car from the Office. more...

Подробнее | Разместил: Planet KDE | Дата: 22.07.2010 | Прочитано: 587 | Комментарии

Benjamin Port (ben2367): KPresenter ideas

System & Utilities

Day by day KPresenter becomes more and more an end-user presentation application.
However, to be a real end-user application, KPresenter needs some new options and some new cool stuff. That’s why, I think it’s a good idea to ask for KDE community to know the essential need for them.
So if you think KPresenter needs something, please send a comment :) .

There is already a brief idea list from zagge, morice-net, me and some discussion with KDE community members during Akademy.

Presentation tools :

  • Blur effect on highlight mode (presentation tools) and add anti-alisasing (in order to have a smoothy circle)
  • When an animation tool like highlight or black screen was selected play animation like fade effect
  • New tool to navigate easely between slide (For example if presenter view mode is disabled)
  • Allow user to navigate with keyboard when a presentation tool is activated
  • Allow user to resize light (highlight tool)

Page effect :

  • Allow user to set a default page effect for the slideshow (for a 30 slides presentation more...

Подробнее | Разместил: Planet KDE | Дата: 22.07.2010 | Прочитано: 654 | Комментарии

Brad Hards (bradh): Trying OpenChange server, easy way

System & Utilities

OpenChange is an important project, but it does require quite a lot of work to get it all to build. We're working on the process, but in the mean time, we've (ok, Julien Kerihuel with nothing from me except encouragement) has built a Virtual Box image that provides OpenChange all built, configured, set up and ready to try.

See for the download (ftp or rsync) location and setup procedures.

Have fun, and let us know how it goes!

Подробнее | Разместил: Planet KDE | Дата: 22.07.2010 | Прочитано: 603 | Комментарии

Sebastian K

System & Utilities

Lion Mail plasma email widget showing an email received via PUSH IMAP

Подробнее | Разместил: Planet KDE | Дата: 22.07.2010 | Прочитано: 480 | Комментарии

Robin Burchell (w00t): Qt: Bootstrapping openness

System & Utilities I witnessed (and was pleased to take part in) some interesting discussions on #qt-labs this afternoon, all stemming from a contribution to Qt3Support being rejected.

A long story short, the contribution - despite looking reasonably valid - was rejected because Qt3Support is effectively unmaintained, and as a result, any changes to it could have negative impacts on users of the support API.

I understand that argument, yet at the same time - I can't help but think it's a bit of a backwards approach to be taking. Typically, a contributor will wander along, find a bitrotting module/project that interests them, throw patches at the previous maintainer - and shortly after doing so, find themselves a de-facto (or indeed official) maintainer through their efforts.

This is a natural progression of things and should really be encouraged, it allows what would otherwise be dead code to live on. However, in Qt3Support's case, the central point was that they'd love someone else to take responsibility for it, but don't want to expend the effort themselves to triage, maintain, and otherwise support it more...

Подробнее | Разместил: Planet KDE | Дата: 22.07.2010 | Прочитано: 609 | Комментарии

Danny Kukawka: [Update] openSUSE: new wiki, and now ...

System & Utilities
Some updates about the new openSUSE wiki issues:
  • The User:* pages are now finally protected (see bnc#409520 for history).
  • Looks as if the Special:Import is now finally working also for normal users.
That are good news, but there are some other issues with the wikki: 
  • As already pointed out by some other (e.g. in the 5th comment on this post): older external links to wikipages don't work anymore and there is no hint on the 'empty' page that there is a new wiki with a new structure and where you can find the old wiki. That's really annoying! But there is a info one some pages in the old wiki where to find the new pages (as e.g. here), we need something like that in the new wiki with info where the page was moved. At least as long as this page is empty.
  • Also the 'google index' is destroyed. If you e.g. search at more...

Подробнее | Разместил: Planet KDE | Дата: 22.07.2010 | Прочитано: 578 | Комментарии

Andreas Demmer (ademmer): Optimizing KDE’s energy profiles

System & Utilities

In my last posting, I mentioned that my notebook eats by far more battery when running Linux / KDE than running Windows 7. Even though I identified (and fixed) that this was due to the switchable graphics (both cards were running and sucking power), I was eager to optimize the power consumption. After some research, I came up with the following solution.

I put several energy-savign tweaks into a script, saved it to /usr/local/sbin/ and added an entry in sudoers for it because it requires root privileges. I can run the script now with sudo but without having to enter the root password thus allowing the KDE energy manager Powerdevil to run the script automatically. Therefore, I added the following custom call to the Powersave profile in Powerdevil‘s settings:
sudo /usr/local/sbin/

This makes KDE call the optimizations automatically as soon as the notebook switches to the Powersave profile.

I adapted the optimizations to a script that reverts all changes done by the powersave script. This script needs an entry in sudoers, too, more...

Подробнее | Разместил: Planet KDE | Дата: 21.07.2010 | Прочитано: 668 | Комментарии

Kevin Whitaker (eyecreate): Just finished my mid-term evals, so I thought I'd give a quick view of...

System & Utilities figure7.jpeg

Just finished my mid-term evals, so I thought I'd give a quick view of what I have. I've gotten the base plugin for Gluon Creator finished that allows nodes to be made to represent logic/other stuff. The nodes have each their own properties that hold input or output values. The Input and output connectors are respected and connections can only be successful when one input is tied to one output. Work to save this structure to gluon project and outputting code/usable files is all coming soon.

Подробнее | Разместил: Planet KDE | Дата: 20.07.2010 | Прочитано: 568 | Комментарии
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