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System & Utilities

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Django Tidbit: Logging in After User Activation

System & Utilities

I'm working on a fun little side project (related to my recent hacking for good article) as an excuse to teach myself Django and Android development -- specifically focusing on building client APIs which Android applications consume. Until I have a real idea of the workflow behind this application, I'm focusing on a web frontend as MVP, building it out with what I would think is a fairly standard stack barring the HAML and SCSS obsession I have:

  • celery
  • djaml
  • django-facebook
  • django-pipeline
  • django-registration
  • django-scss
  • django.contrib.auth
  • south

One of the things I've focused on in my early MVP was making the signup/login flow very very smooth. Initially, I went a route of only allowing Facebook Connect logins because the application needs some social graph features that I didn't necessarily want to build out at the time. Based on initial feedback, that seemed like a showstopper because of the target market of this application.

Since that initial MVP, I've taken a break to focus on other projects, and also spend some time figuring out how to properly tackle this project. more...

Подробнее | Разместил: Planet KDE | Дата: 15.08.2013 | Прочитано: 538 | Комментарии

Cantor – dynamic keywords in python backend

System & Utilities

In previous post, I mentioned about dynamic keywords in python backend. The idea is, after import a python module in Cantor workspace, functions, keywords, variables, and more from this module are load by Cantor and available to syntax highlighting and tab complete.

This feature is implemented for now. You can test it compiling Cantor from python-backend branch.

But, let me show more information about this feature.

There are several ways to import a python module in python console. You have “import modulename”, “import modulename as modulevariable”, “from modulename import *”, “from modulename import function_1, function_2, …”, and more. Each import way causes different consequences to user experience.

The four import ways mentioned in previous paragraph are supported by python backend. I will show these different import ways and how python backend behave for each one.

import modulename

The more basic import way. After this command, a variable named “modulename” is defined and the functions and more keywords of this module more...

Подробнее | Разместил: Planet KDE | Дата: 15.08.2013 | Прочитано: 449 | Комментарии

Freestyle Fiction: first pages update

System & Utilities

Here is an update of the first pages of my new comics project. I released those last month in french only, and with almost only “auto-colors” (with the new G’mic filter…).
So I’ve updated the colors adding some simple shadings, and added the english version for all the non-frenchies ;.)

Freestyle Fiction – Episode 01 – part A FRENCH
Freestyle Fiction – Episode 01 – part A ENGLISH

preview picture

The next pages are not ready yet but have made good progress, stay tuned for next news!

Подробнее | Разместил: Planet KDE | Дата: 15.08.2013 | Прочитано: 427 | Комментарии

KDE Software Compilation 4.11 Released

System & Utilities

This version of Plasma Workspaces will be supported for at least two years, and delivers further improvements to basic functionality with a smoother taskbar, smarter battery widget and improved sound mixer.

Подробнее | Разместил: KDE News | Дата: 15.08.2013 | Прочитано: 376 | Комментарии

New KReversi design

System & Utilities

Why we need new design?

  1. Player has no ability to play white.
  2. You can't play with friend (I mean hotseat mode).

Why we can't do changes at existing code?

Because current design has very bad level of abstraction: KReversiView controls part of game-flow, all code based on Computer-Player system with special code for computer and player moves, so to simply implement player-player mode we need to add many IF-statements to KReversiView, KReversiGame and mainwindow code.

What is new design?

I am going to bring especially new level of abstraction to KReversi:
  1. KReversiGame will control all of game-flow and game rules checking
  2. There will be KReversiPlayer interface. KReversiGame will have two such objects, that represent players
  3. There will be two implementations of KReversiPlayer class: KReversiHumanPlayer (for actual player sitting in front of computer), KReversiComputerPlayer (for AI player)
  4. KReversiView will not control any game rules, only UI and simple signal to indicate that somebody had pressed some cell on field
All this stuff will use qt signals and slots to connect to each other according to scheme below:

Подробнее | Разместил: Planet KDE | Дата: 15.08.2013 | Прочитано: 377 | Комментарии

KDE Plasma, Applications 4.11

System & Utilities

Packages for the release of KDE SC 4.11 are available for Kubuntu 12.04LTS, 13.04 and our development release. You can get them from the Kubuntu Backports PPA.

Bugs in the packaging should be reported to kubuntu-ppa on Launchpad. Bugs in the software to KDE.

Подробнее | Разместил: Planet KDE | Дата: 15.08.2013 | Прочитано: 385 | Комментарии

Netrunner Sprints Ahead of the Linux Distro Pack

System & Utilities

By integrating classic KDE desktop performance with Web-based applications and cloud services, Netrunner 5 "Enigma," released last month, does what many distro retreads fail to do: It achieves a distinctive quality that makes it stand apart from other distros.

Подробнее | Разместил: KDE News | Дата: 14.08.2013 | Прочитано: 390 | Комментарии

Important note about Amarok and KDE 4.11

System & Utilities

Hello everyone, welcome to my new blog. In case you don't know me yet, I'm Mark Kretschmann, known in KDE mostly as the Amarok guy (I started it about 10 years ago). I used to contribute regularly to Planet KDE, back then on our Amarok server, but what happened then is Google Plus, and a server move. As I became more active again in Amarok development after a hiatus I figured I could start blogging again, now that the "huge" release 2.8 is approaching really fast. If you'd like to follow me on G+ where I'm very active, you can do it here.

Now an important message for Amarok users: If your Amarok has started to crash after upgrading to KDE 4.11, please upgrade your Amarok to version 2.8-Beta. Due to a change in a library, the older 2.7 series is not compatible with KDE 4.11 at this time, but the 2.8 series is. You can find the Beta release packaged for many distros, more...

Подробнее | Разместил: Planet KDE | Дата: 14.08.2013 | Прочитано: 404 | Комментарии

FolderView update

System & Utilities

Hello planet,

Well I think it's time for a small update on porting the FolderView applet to QML.

First of all, I've dubbed it QuickFolder for now, this is the name under which it exists in  the kde-baseapps repo. The reason is that both codebases need to coexist for a while for me to carry over the old (existing) code to the new applet.

The repository I'm currently working in is a personal clone, and can be found via

Branch plasma/isemenov/qml.

Now my impression of this work is that it's quite, I'd even say *very* challenging at times, since for me, QML is an unknown technology and I'm lazy to thoroughly read through all the docs (of which there are lots, as usual). So big thanks goes to all the people who help me out on irc in #plasma and #qt-quick.

For now we are sticking to QML1, well there is no solid reason that I could name out of my head, although the QML1 more...

Подробнее | Разместил: Planet KDE | Дата: 08.08.2013 | Прочитано: 500 | Комментарии

Season of KDE 2013 Applications Open

System & Utilities

Season of KDE is now officially open for applications.

To apply head to register as a student and click "Submit a proposal"

What is Season of KDE?

Season of KDE is a community outreach program, much like Google Summer of Code that has been hosted by the KDE community for five years straight.

It is meant for people who could not get into Google Summer of Code for various reasons, or people who simply prefer a differently structured, somewhat less constrained program. Season of KDE is managed by the same team of admins and mentors that take care of Google Summer of Code and Google Code-in matters for KDE, with the same level of quality and care.

Who can take part?

Everyone can apply for Season of KDE. We give preference to those who have applied for Google Summer of Code and to students, but we will gladly consider applications from anyone.

What do I get out of this?

A great summer working on a really cool KDE project and gaining valuable experience. If you more...

Подробнее | Разместил: Planet KDE | Дата: 08.08.2013 | Прочитано: 504 | Комментарии

GeoClue rises again

System & Utilities

Those that have been following my blog for a longer time know that I've been talking a lot about making the Linux desktop and mobile platforms location aware.

Thanks to the amazing advances in adoption of mobile platforms, this dream has more or less become true, especially in the more widespread Apple and Android ecosystems. All these devices know where they are, and developers are coming up with different smart applications to utilize this information.

The free software world has been at risk of getting left behind. GeoClue, the location framework designed for these environments was in a state of flux for a long time with very little happening to it. But now we have GeoClue2, a rewritten implementation of the original idea.


LWN has a good write-up:

Zeeshan Ali spoke about GNOME's geo-awareness, which is undergoing a rewrite. Geo-awareness consists of four major pieces, he said. The first is geolocation, or the "where am more...

Подробнее | Разместил: Planet KDE | Дата: 08.08.2013 | Прочитано: 468 | Комментарии

An information kiosk in QML

System & Utilities

Back in May I had to travel to Bariloche, my hometown, due to family issues. While there, I met Javier Barcenas, a local FLOSS advocate and developer.

We talked about KDE, and I told him about QML, and the beautiful interfaces you could build with it. He was so bold as to go and develop his next project using QML, which he had to learn from scratch.

It is a tourist information kiosk, and it looks extremely good.

Javier asked me to thank the community, which was very helpful to him, and made this possible.

Подробнее | Разместил: Planet KDE | Дата: 08.08.2013 | Прочитано: 435 | Комментарии

A Nepomuk Integration Plugin for Konqueror

System & Utilities

Last week, I presented an idea about indexing messages from webmails in Nepomuk. The summary of this idea is to implement a browser extension for Firefox, Chrome and Konqueror. This extension parses the DOM tree of every page visited by the user that belongs to a webmail. When e-mails are found, they are extracted and stored in a temporary file. Nepomukfileindexer then quicks in and indexes these e-mails in the Nepomuk database.

The reason why I started this experiment is because many users use webmails instead of mail client programs like KMail or Thunderbird. The information about these emails cannot therefore be indexed by Nepomuk. As there are many different webmails, the biggest part of the project is to implement parsing rules for each of them. The browser plugin itself is quite small.

Extracting Information From the DOM Tree

Last week, I implemented the file indexers that are responsible of indexing mbox files and MIME files into the Nepomuk database. These indexers are now in a fairly good shape. This week, I started to implement the browser plugins. I more...

Подробнее | Разместил: Planet KDE | Дата: 07.08.2013 | Прочитано: 526 | Комментарии

LinuxMint 15 delivers smooth alternative to Ubuntu

System & Utilities

The crafters of the LinuxMint distro are in a ticklish position. Mint is based on Ubuntu, which in turn, is based on Debian, which in turn, has the moveable feast of the Linux kernel as its underpinning.

Подробнее | Разместил: KDE News | Дата: 05.08.2013 | Прочитано: 428 | Комментарии

[GSoC] More plugin ports and moving forward

System & Utilities

Porting more plugins

In my last blog posting I wrote about the port of Marble’s Graticule and MeasurementTool plugins to an object based scene management. These ports change how the plugins draw their visual representation. The ported plugins used to draw directly to the scene. After porting they now create geometric objects and add them to the scene. These objects are then drawn by the rendering engine. Well, this is not the whole truth. At least not for now. The “scene” is a simple list of geometric objects at the moment and is meant to be a placeholder. Thats where the scenegraph will be plugged in. But lets get back to the render plugins I have ported during the last weeks.

The APRS plugin

The APRS plugin does collect and visualize APRS data (Automatic Packet Reporting System). The port was rather trivial with all the knowledge from previous ports. I also thought about using placemarks with track information for the data points. Since this will require a lot of refactoring to the plugin code more...

Подробнее | Разместил: Planet KDE | Дата: 01.08.2013 | Прочитано: 426 | Комментарии

Now Open for Donations

System & Utilities

Your donations help fund travel to developer meetings.

We've been asked many times how to contribute to Kubuntu financially so we are now open for donations. Your donations will help finance project expenses such as hardware, travel and cloud computing.

Подробнее | Разместил: Planet KDE | Дата: 01.08.2013 | Прочитано: 463 | Комментарии

oSC13, Strategy and Factory

System & Utilities

The openSUSE conference had some chats about strategy. Ralf talked about suggestions from SUSE in his keynote and there were more suggestions discussed in person between various people. I'd like to summarize some of the things I heard. In this blog I will talk about the directions of Factory, what Ralf mentioned as SUSE's ideas from his keynote; later this week I will blog about the openSUSE releases.

This is a combination of stuff I heard (not just at oSC but also earlier - even from the first strategy discussion, 3 years ago) and ideas I have. I just attempt to put it into text so it is easier to shoot at, comment upon, think about.


Let's start with talking about Factory.

Who is it for

We need to think about who factory is for, how these people are supposed to be using it etcetera. Right now, we have a shared understanding - but it probably isn't more...

Подробнее | Разместил: Planet KDE | Дата: 01.08.2013 | Прочитано: 561 | Комментарии

No more “unknown” icons

System & Utilities

UnknownIconsIn recent versions of Dolphin, the view sometimes looked like this just after entering a directory.

Some of the files and sub-directories have “unknown” icons, which are replaced by the correct icons later.

This will not happen any more in Dolphin 4.11.

Why did we show you “unknown” icons at all in the first place?

Dolphin can show you a lot of information about your files. Some of this information can be obtained quite easily, like, e.g., the name, the file size, and the modification time.

However, some other properties of a file or directory might be more expensive to determine. Examples are:

  • The type of a file: if it cannot be determined unambiguously from the file name, we have no choice but to read the contents of the file.
  • The icon that has to be shown for a file depends on the type. A directory icon, on the other hand, can be chosen by the user in the “Properties” dialog. The chosen custom icon is then stored more...

Подробнее | Разместил: Planet KDE | Дата: 31.07.2013 | Прочитано: 575 | Комментарии

Project Neon 5 daily builds, Ubiquity Wireless Setup

System & Utilities

KDE Project:

Project Neon is a fantastic resource for KDE developers giving daily builds for KDE software. It's maintained by the lovely Kubuntu community on the lovely Launchpad infrastructure. KDE developers can install the various bits they need to develop their part of KDE without having to worry about compiling everything themselves. It installs everything into /opt so it doesn't touch your normal software installation.

Thanks to the hard work of Harald and others we have the first KDE Frameworks 5 builds on Neon! I expect this to prove a vital resource in developing Frameworks 5.

As with any daily build bits will break occationally (or quite often until Frameworks 5 settles down). Take a look at the Packages in “Project Neon KDE Frameworks 5” to see the current state.

To give it a try go

sudo apt-add-repository ppa:neon/kf5
sudo apt-get install project-neon5-session

and log into a Neon 5 session more...

Подробнее | Разместил: Planet KDE | Дата: 31.07.2013 | Прочитано: 524 | Комментарии

Gluon and the state of the project

System & Utilities

Hello, I'm the guy currently working on Gluon project for GSoC with the idea of Making the Create > Discuss > Play workflow actually work.

Last year:

Well, last year I joined GSoC too, always with Gluon, and I wrote a working OCS server just for Gluon purposes. Of course it's not full featured neither bug free, but it's currently serving us at this address: In addition, I developed the future Gaming Freedom web site that is using our OCS server too.

This year:

I started a partial rewrite of the Gluon Player which now uses QML and plasma components. Here is a screenshot of it running:

It currently supports login/logout and registering a new account but the target for the end of the project is to browse and play games. Also graphics isn't perfect and amazing but we can always improve it after having the application working.

What games?

In order to play games we must have games. more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2013 | Прочитано: 474 | Комментарии

Help porting KWin to Frameworks 5

System & Utilities

With Akademy behind me and the situation about “what is master” in kde-workspace resolved I decided to switch my work away from Wayland towards getting KWin on top of Qt 5 and KDE Frameworks 5. After a few days of hacking the compilation of KWin is re-enabled in the frameworks-scratch branch of the kde-workspace git repository.

This means that KWin compiles, links and installs when compiling against KF5. A quite important step and only very few code areas got ifdefed. The preparation work of the last months showed it values as for example the compile errors due to QPixmap were extremely easy to resolve (just delete the code) without loss in functionality.

But of course at the moment KWin does not work yet when compiled against KF5 as the event filter is not yet ported to xcb. This is what I will focus on next so that we can soon start testing a KWin on 5 and start to adjust the areas which need to be tested against a running KWin, where “ship it, it compiles” is not enough.

Of more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2013 | Прочитано: 434 | Комментарии

Unit testing with mock objects in C

System & Utilities

The article Jakub Hrozek and I wrote for Linux Weekly News ( about CMocka and using mock objects is available to the public now. You can find it here:

Unit testing with mock objects in C

cmocka is a unit testing framework for C with support for mock objects. It is used by several Free Software projects like libssh, csync, SSSD or Elasto Cloud.

If you don’t have a subscription you should consider getting one ;)

flattr this!

Подробнее | Разместил: Planet KDE | Дата: 25.07.2013 | Прочитано: 438 | Комментарии

In Conversation with Philip Koops

System & Utilities

This time we had a chance to interview Philip Koops who paints for a hobby and swears by the words of Picasso - "Art washes away from the soul the dust of everyday life." An interesting conversation where he shares with us his views on Painting, Open Source Communities and much more. He also collaborated with us for the Krita Webshop and made us this uber-handsome Krita Bear!! Click on Read More to read the interview..

Krita Bear


Krita Bear

Hello Philip, would you like to tell us something about yourself?
Sure, I'm over forty, married and father of two. I've always worked in a corporate environment (call-centre) and decided to have a shot at Freelancing because I thought it was my last opportunity to live the life I always dreamed of, and also because I would have more time for my family (working from home). more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2013 | Прочитано: 443 | Комментарии

Yocto: mature or not?

System & Utilities

This is a bit of fun spoiling post, but sometimes we need to become constructively critical in order to improve the situation. As you may already know, Yocto has been advertised as the relatively new technology for creating custom distributions for you. Although, people commonly use Poky, Arago, and so forth ready-made distributions on top of Open Embedded.

Yocto Project


So, here is the critical issue for embedded developers using the cross-toolchain provided by Code Sourcer why I personally think that Yocto might not be usable for the moment for commercial projects where reliability is a main concern.

In short: it does not work if you would like to build the distribution (for instance stock Poky) for your embedded board, like ARM with the sourcery toolchain.

What makes me worry a bit more, this cross-toolchain environment was working in the first more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2013 | Прочитано: 437 | Комментарии

What a life…

System & Utilities

I don’t even know how to start this one but wow, when I think my life can’t get worst it surprises me again.

So last month I started a campaign in Indeigogo  about Litteras a new email client with EWS (Exchange) support. It was great, in like 2 days I had 5% of the goal, but then it stuck completely, that was probably because I failed to blog more about it and it’s progress, but it also showed how I was wrong on thinking people dislike Akonadi, I got lots of feedback of users that like it, I gave it a second try and it was more or less what I had experienced in the past. It worked with my Gmail account but still I don’t like it much, I was able to make kmail unusable by killing the mysql process, I should fill a bug but lots of things happened after this.

One of the greatest things of the campaign was that I was informed about KDSoap which is not on “Qt Soap”google search, right now more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2013 | Прочитано: 589 | Комментарии

Akademy 2013: Report with blackjack

System & Utilities


Previous week I have attended Akademy 2031 conference. This year they joined forces with Qt Contributors’ Summit 2013, that’s why I am so lucky to attend even two global events the same time. In this report I would like to say about how it was. Seems like these keywords will fit theme of the whole report: kde, community, I, love, you.

Let’s start then. Day 1. It was kinda greeting party with some free wine and awesome music, which attendee and organisators were playing themselves. Greet music and paid Coke for me were great! :D I also got my badge (mum got her one next day).

day 1

I also had a conversation mostly with Kevin Krammer (thanks, Kevin!)

Day 2. Sessions started. It was great, a lot of new knowledge, etc. I listened everything and got a lot of important experience. Sessions are great, only one remark is I would like to have a bit more technical talks.

After that we had a party at the night, that was unfortuntely, great more...

Подробнее | Разместил: Planet KDE | Дата: 25.07.2013 | Прочитано: 558 | Комментарии

With Porteus in Your Pocket, You're Good to Go

System & Utilities

I boot into my Porteus sessions from a USB drive that holds not only the Porteus OS but all of the software modules that I added and all of the OS settings, so I have a uniform user experience on every computer I borrow to run Porteus Linux.

Подробнее | Разместил: KDE News | Дата: 24.07.2013 | Прочитано: 412 | Комментарии

Integrating the Query Builder into Dolphin

System & Utilities

Something that works is good, but something that works great is better. These past days, I fixed many bugs and imperfections of the new Nepomuk Query Parser and the Query Builder widget. I will summarize theses fixes shortly, then will come the screenshots.

Syntax-highlighting, one more time

Before my holidays, I implemented the Query Builder widget as a syntax-highlighted QPlainTextEdit. This was easy and fun, and the result looked quite nice. You can find the whole story here.

syntax-highlighted QPlainTextEdit

After that, I decided to rewrite the implementation from scratch to give it a different look. I wanted to have boxes around parsed terms, with a small cross to remove them. After some days, the widget looked like that:

boxes in a QWidget

This widget was really nice, but its implementation did not seem very clean. Furthermore, the widget was made of a complex tree of line edits, buttons and widgets responsible for drawing the boxes. Handling the cursor position (and the text itself) was a bit hackish, and some things did not more...

Подробнее | Разместил: Planet KDE | Дата: 24.07.2013 | Прочитано: 423 | Комментарии

Memory usage improvements for 4.11

System & Utilities

KDE Project:

The other day I went to buy a DDR stick but the shop was closed so the only solution was to sit down and fix some memory hungry applications.

These will be in 4.11:

* Fixed a bug where maildir resource would use 1 or 2GB when importing large folders.

* Fixed a bug where mixedmaildir resource would also use 1 or 2GB.
(Thanks to Martin Steigerwald for providing a a 77k e-mail folder).

* akonadiserver wasn't clearing uneeded query caches. Saved 65MB here.

* Kontact had 5 copies of all calendaring data in memory if you used summary view which
accounted for 200MB with my big test .ical file.

* KOrganizer grew infinitely over night under some circumstances.

* KAlarm wasn't freeing editor dialogs, resulting in infinite memory usage over time.

* Mysql got up to 25 MB of savings (4.12)

Also, Dan Vratil and Vishesh Handa have been working hard on performance/memory of nepomuk and more...

Подробнее | Разместил: Planet KDE | Дата: 18.07.2013 | Прочитано: 417 | Комментарии

KDE e.V. General Assembly 2013

System & Utilities

tl;dr: If you are a committed KDE contributor and not a KDE e.V. member, you are doing it wrong. If you are a KDE user, consider helping the KDE User Working Group. Read KDE e.V.’s quarterly reports.

Voting at the KDE e.V. general assemblyAkademy 2013 is still on it’s way, and as usual the KDE e.V. General Assembly was held as a part of it. KDE e.V. is the representation and governance body of the KDE community. Membership in this not-for-profit association registered in Berlin, Germany is open to all KDE contributors . Members usually assemble once a year to coordinate, to vote on issues important to the community and to elect representatives and board members as needed. The highlights this year where the discussion of the role of the Community Working Group, the report on the first activities of the newly established Financial Working Group, and the election of one new board member. I was the chairperson of the assembly, and this is my inofficial report. more...

Подробнее | Разместил: Planet KDE | Дата: 18.07.2013 | Прочитано: 689 | Комментарии
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