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  Today I finally decided that the way I use objdump could be improved. Every time I wanted to take a look at the code that GCC had produced (which I do about 10 times per day on average these days) I would execute "objdump -dwC |less" and possibly have a vim with the sources open in a different Konsole tab. For some more intensive debugging/optimization sessions I'd redirect the objdump output to a file and open that file and the source file inside one vim process (:vsplit is my friend). But then I asked myself why vim doesn't understand all by itself that I want to look at the output of objdump whenever I open an executable... So I looked how the gzip filter was implemented and then did my own little hack. I also found a little nicer syntax file on the web as well so I combined that all to: fun Objdumpread() if 0 != match(getline(1), "\(^.ELF\|!<arch>\)") ...read more...
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| KDE today celebrates its semi-annual release event , releasing new versions of the Plasma Desktop and Netbook workspaces, the KDE Development Platform and a large number of applications available in their 4.5.0 versions.
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| On Saturday we had a series of talks about KDE 4.5. It took place in FM La Tribu, an alternative radio station, always willing to help Free Culture movements. About 10-15 people gathered there to listen to Juanma, Mariano, and others talk about the features offered by KDE. Myself, I talked about the applications in KDE Finance, and also about how to develop within KDE. I hope we see some new contributors coming in.
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| Ryan Melton announced on the kde-bindings mailing list that he had set up a project on github called 'qtbindings' with the aim of doing cross-platform gems for QtRuby.
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| My last blog was long ago. I know, this is bad, i should blog every week, but well i didn’t really had interesting news. I was doing very much small changes, tweaks, bug fixes, layouting code and much more. The last bigger addition was the minimal shade selector, I will talk about it in a few lines. But first here is a small summary, of what i was doing since the last blog post: I’ve connect the colour selectors to the resource manager, made the settings save to kritarc, added a tab in krita preferences (thanks Boud for the new registry, that was needed for that), added a colour history, moved the settings button to a more space efficient place, implemented drag and drop for colours, shortcuts for quick access and an api for setting a colour. The last point was actually much more difficult, than it sounds, because of the way, the selectors work with colour spaces. The selector has to search for the colour, that generates the user visible colour by using the colour spaces. ...read more...
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| Marble 0.10 was released on August 10th, 2010. It is part of the KDE 4.5 Software Compilation. In the good tradition of recent years, we have collected those changes directly visible to the user. Unfortunately we were a bit late with our visual changelog for the release. So please enjoy looking over the new and noteworthy:
Online Routing
Do you want to plan a bicycle tour in the nearby wood? Need driving instructions to get to an address in a foreign city? Besides searching for places, Marble can now display possible routes between two or more of them.
And the best thing is: The routes are draggable!  Online Routing in Marble Places to travel along can be entered using search terms (e.g. addresses) in the new Routing tab on the left. Of course Marble also allows you to input them directly on the map. Routes are retrieved using OpenRouteService and displayed on the map. Turn-by-turn instructions are displayed on the left. ...read more...
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| KDE today celebrates its semi-annual release event, making available new releases of the Plasma Desktop and Netbook workspaces, the KDE Development Platform and a large number of applications available in their 4.5.0 versions.
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| In the last days I have resumed my QML work (I had a small break to work on the MGCP GW code of OpenBSC to fix some real world issues) and there is one kind of issue I tend to run in and I wonder how others are solving it. Let us imagine we have a QML Component for a Button. The Button itself can hold a text (property alias text: buttonLabel.text) and the button has three states (enabled, focused, pressed) that depend on the MouseArea that inside the button as well. Actually this approach is directly coming from the many nice examples and demos provided by Nokia.
Now the problem is... I'm using the Button in many places and depending on some other external state the label of the Button should change and I keep writing things like this:
UI.Button { id: text_button text: 'My Text' MouseArea { anchors.fill: parent onClicked: { console.log('clicked'); } }
states: [ State { name: 'some-state' PropertyChanges { target: text_button; text: 'Other text'; } } /* more states... */ ] }
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| Congratulations everyone on a great KDE 4.5 release! Those of you who are in the Washington DC Metro area are invited to celebrate on Saturday August 21st at Piratz Tavern in Silver Spring, MD at 7:00PM. Bring your geeky, open source, and K-curious friends (those of the Gnome persuasion are also welcome). Please RSVP to celeste at kde dot org so I can reserve an appropriately large table. 
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| The developers behind the KDE project have officially released version 4.5 of the KDE Software Collection.
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| Eike has been collecting KDE sightings in movies and tv series for quite a while already. It seems he’ll have to add books as well now. One of our attentive users (thank you!) brought this to my attention today: 
Amarok gets mentioned in “The Fuller Memorandum”, the new SiFi book by Charles Stross. Rocking! 
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| As a followup to my post on finding a name for the until then unnamed sports and activity tracking application I have been writing I’d like to thank all commenters on the blog entry for their valuable input, their ideas and suggestions and of course for their kind words. It sure has been uplifting to read so much enthusiastic posts in response to an application that has not even been released yet. Now for the thrilling yet hard part: I had to pick one of the many, many good suggestions for an application name that all of you made. I had a few ideas and requirements what I would like the name to be like — and maybe those ideas are valid for more than just this one application: - The name should be easy to remember. Some imaginative and creative name that no one can remember for longer than five minutes is going to do more harm than good.
- And old-skool name like “KAktivity” (i.e., lots of K’s everywhere) is not, at least in my opinion, ...read more...
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| KOffice Developer Meeting . Akademy time! One Kexi dev was available for hugs^wdiscussion; chatted a bit with the ownCloud hackers about exposing Kexi databases though it, KDevelop guys about injecting Kexi database plugin in a form of KDevelop's "Database view" and mobile guys about possible options for Kexi Mobile.
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| Custom brush was disabled feature for quite a long time in Krita and I resurrected the feature from the dust in week 30. Further testing uncovered a lot of bugs. First bug occurred when you used color mask as grayscale mask. The mip-mapping levels were still grayscale when you returned from grayscale mode to color mode, so the brush looked grayscale even when you wanted to paint in color. Fixed. When you paint in mode “Use color as mask” with some predefined brush, the colorful image is converted into gray scale image first. But for the mip-mapping it is converted to masks, where white means transparent and black means opaque. We had bug in computing grayscale-convert-to-mask. Fixed. Another use-case when we convert color image is when we create custom brushes. You can save colorful brush (with RGBA) and then paint with it as mask if you want with Use color as mask mode or you can select Use color as mask in the custom dialog and the brush will be saved as grayscale. In the later option your brush file ...read more...
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Why do I need KDE Software on Windows? Use Linux instead! That's much better anyway.
Yeah, that's right. But there are situations where that strategy does not work.
I am sitting in the office and are still fascinated by RKWard (as I blogged before). So I kindly asked our IT guys to give me an old notebook to install Linux onto it. And because they are great colleagues they gave me one. (Yes, I come to the point soon.)
So I started to download openSUSE 11.3. But the network connection was so poor that after an hour or more the download was aborted and I had to start from the begin. If I only had a nice torrent client. (Now I come to the point.) ktorrent!
(Yes, there are other programs as well but perhaps I was searching for a reason.)
That was my chance to give KDE on Windows a try.
After downloading the installer (http://windows.kde.org/download.php) I clicked through the wizard until I came to the packages. What packages do I ...read more...
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| First of all, I apologize for my laziness in updating X2 with new code example. I have actually written quite a number of interesting examples, some of which have even been shown back in March, during my talk at Bossa Conference 10, though I did not find the time to clean up and polish them. Although I'd face new challenges in my upcoming adventure, I am quite confident I will reach the designated rate of new X2 example fortnightly. Now let's focus on the newest example: a minor modification to the previous accelerometer code on Nokia N900 [1]. There has been confusion with my statement there: put this function is a separate thread. This is the alternative to a non-blocking D-Bus code. The main goal of course is not to be able to get faster acceleration values per second, it is only to prevent your code from being blocked by the synchronous D-Bus call. Rather than just updating the code with the threaded version, I also added some ...read more...
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| Tellico is a collection manager for KDE. It includes default collections for books, bibliographies, comic books, videos, music, video games, coins, stamps, trading cards, and wines, and also allows custom collections.
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| By and large I don't really care about what Microsoft do - I don't use their software, and I actively avoid making my career dependent on them.
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| By and large I don't really care about what Microsoft do - I don't use their software, and I actively avoid making my career dependent on them. But I am a fan of the C# programming language and think the Qyoto/Kimono bindings for the Qt and KDE apis are pretty neat. However, the recent decision to lay off all the IronPython and IronRuby guys is so monumentally stupid, I don't know where to start. I still think C# and Mono are really innovative, and don't agree with all the Free Software trolling against them, even when it is from Richard Stallman himself. So what should we do? Arno is clearly not happy with working on C# bindings even though they are technically pretty amazing. Steve Ballmer why are you are still in charge?
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| Robin Burchell wrote up something on the various string classes which are available in Qt. Unfortunately, the comment function on his blog does not work for me, so I have to respond in a separate blogpost. Basically, Qt has two string classes. By “string”, I mean a chunk of memory which is interpreted as a set of consecutive characters. The most common string class, as Robin noted correctly, is QString, which stores the characters in UTF-16 internally. Robin then goes on to discuss std::string. It is, however, my opinion that std::string is of limited interest for Qt developers, unless they are going to interface with STL-based libraries. This is because std::string has a better equivalent with a more precise name: QByteArray. Both std::string and QByteArray are wrappers around the traditional char* character array. As such, they are best used in scenarios which do not depend on the locale. QString has a diverse set of conversion functions from and to QByteArray (or char*), each of which specifies its own ...read more...
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| Last time I wrote about offline routing in Marble: Calculating routes between two or more places without the need for Internet access. This was realized using gosmore. In the meantime Niko Sams added support for routino, another offline router, to Marble. My last commit adds traveling salesman support, an offline router written in java. All of this will not be available in KDE SC 4.5, but 4.6. Most users will only need zero or one offline routers. With three of them supported by Marble, the question arises which one to choose? Ignoring their underlying algorithms and configuration options for now, I collected some high-level statistics. They show the relative differences of map sizes and response times. The response time was taken as the minimum response time among three or more runs, each measuring the time from sending a route request to the application until the full retrieval of the response in Marble. I chose two routes, a short one and a longer one, and compared the response times ...read more...
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| Last weekend I received a postal package that contained a classroom atlas from Austria: the Neuer Kozenn Atlas. Inside there was a nice shiny CD with the title GEOTHEK Schulatlas, Version 1.1 Digitaler Weltatlas. The publisher of this atlas and its software is Ed. H
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Hi all,
A while ago I asked for comments from readers of the dot. There was a lot of valuable feedback which was noted by the dot editors and I'd like to summarize some of the findings. The dot team has unfortunately been quite busy with Real Life (TM) lately so we haven't had much chance of discussing the results yet but some things are already under way.
Ideas and feedback- Introduce a Like button - status: To be discussed
- Pace of articles - OK, so we keep the speed at 1 article/day
- More technical content like the famous 'Pillars of KDE 4' series by Troy - though one. The dot depends on YOU for content, at least to a large extend. While the promo team writes articles like interviews and reports from meetings, we often lack the technical skills/knowledge to really write about what's upcoming. We might be able to do something like a weekly report on what has been on the planet in terms of upcoming things, but otherwise - we need ...read more...
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DataEngines written in JavaScript can now offer Services. Sounds life changing, right? Ok, maybe not, but really, I swear it is! ;)
DataEngines publish data in a read-only pattern that allows the data to be accessed and shared by multiple consumers (or what we usually refer to as "visualizations"). The "read-only" part is a bit of an annoyance if the data being presented represents a live artifact. For instance, if a DataEngine was reporting on the network link, it might be nice to set the status of that network interface. Of if the DataEngine was publishing information about windows on screen, it might be nice to be able to say, "Hey, minimize that one." Or if the DataEngine shows information from an online service, it might be really useful to say, "By the way, here are my log in credentials for that service."
Plasma has the concept of a "Service", which does pretty much what it sounds like: it provides an interactive service that you can make calls to. What those calls do, exactly, is completely up ...read more...
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We are in full swing of electronic books, bubbles that are likely to explode into a new phase of the war between the old and new generations of publishers, content providers and consumers. It is likely that sheet music enter the battlefield.
Before proceeding I must warn you about two facts. One: despite the name of the blog, I am a Trekkie. Two: I am not a neutral observer. In my opinion traditional books publishing, as well as media labels, are going to lose. Those not able to adapt to changing times will disappear. Resistance is futile.
The musicians are going to adopt electronic lecterns sooner rather than later. The electronic scores begin to replace the editions printed on dead trees, as is already happening with books. There are some solutions on the market, more or less primitive.
MusicPad: Hardware and software.
How could you describe it? It is like a Kindle with legs. There is a "Master" version with twice the surface. Among its outstanding features: it is completely silent. ...read more...
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This is a quick follow-up on my post from yesterday about adding content to Userbase and Techbase.
The good news is that two people (besides myself) have started adding content to the Plasma Panels page. There's a discussion thread with three people (including me) adding to it. This is great!
I added some links in the introduction section to text that refers to specific widgts, such as the system tray and tasks widget. If you're looking for something even more focused than "Panels in Plasma" to add to, log in to Userbase and click on one (or more :) of those links and start adding content.
I've also added the {{improve|reason why}} template from Techbase, and used it on the Panels page. This in turn gives us the auto-generated Needs Improvement page thanks to the use of categories. Looks like a nice start to getting lists together. I need to discuss with Anne about adding a Category to the {{under_construction}} template so we can start ...read more...
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| GCstar is a free open source application for managing your collections. Detailed information on each item can be automatically retrieved from the internet and you can store additional data, such as the location or who you've lent it to.
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