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Linux Tag 2007 – we’ll be there

Published Wednesday March 7th, 2007 | Comments Off on Linux Tag 2007 – we’ll be there
Posted in Qt, Qt Jambi, Qtopia

In case you are still undecided whether or not you should visit the Linux Tag 2007, from May 30 to June 2, 2007 we’ll have a small booth there, too. It will be staffed by Trolltech engineers from Berlin and Munich. To me that’s good news. LinuxTag was always the best Linux show out there, […]

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Gradient bounds

Published Wednesday March 7th, 2007 | Comments Off on Gradient bounds
Posted in Aggregated, Qt

The most unfriendly thing about rendering gradients with Qt has been the fact that you had to specify gradients in coordinates of the shape they were to be rendered on. It wasn’t ideal especially for all applications which included any kind of animations or were rendering large number of items because it meant that the […]

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Perspective transformations on a QGraphicsView

Published Thursday March 1st, 2007 | 7 Comments on Perspective transformations on a QGraphicsView
Posted in Graphics Items, Graphics View, Labs, Qt

I don’t have much to say this time, just wanted to share a screenshot after I changed the 40000 Chips demo a bit. I replaced the single horizontal rotation-slider with three ones, each controlling one axis or rotation for the view. QTransform is really easy to use, and with some twiddling (thumb up, pointing finger […]

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Lorn Potter

jet lag

Published Thursday March 1st, 2007 | 2 Comments on jet lag
Posted in KDE, Qt, Qtopia

jet lag. I’ve got it. had it for a week now. The reason. FOSDEM in Brussels, and the fact that I live in Brisbane Australia. Why do plane rides suck so much? There’s little or no room, especially since they have installed video+games and the box is usually under the seat right in front of […]

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New classes: QXmlStreamReader and QXmlStreamWriter

Published Wednesday February 28th, 2007 | 6 Comments on New classes: QXmlStreamReader and QXmlStreamWriter
Posted in Qt

Snapshot users have seen them already: with QXmlStreamReader and QXmlStreamWriter, Qt 4.3 will feature two new classes for reading and writing XML. QXmlStreamReader is a faster and more convenient replacement for Qt’s own SAX parser, and in some cases also for applications that would previously use a DOM tree. The basic concept of a stream […]

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Lars Knoll

SSL, proxies and md5 sums

Published Wednesday February 28th, 2007 | 15 Comments on SSL, proxies and md5 sums
Posted in KDE, Qt

As Zack already mentioned in his blog, we had George Staikos visiting us in our Oslo office last week. He, Andreas and myself sat down to hack on some rather big API additions to our networking module. Some of these changes have been visible in the snapshots for a few days now, as the work […]

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Graphics View improvements

Published Tuesday February 27th, 2007 | 21 Comments on Graphics View improvements
Posted in Graphics Items, Graphics View, Labs, Qt

We’re in the process of closing up the features for 4.3, and I’ve had a little run-down of what’s changed in Graphics View. In general, you will notice that the graphics run faster, (especially for complex polygons,) collisions are absolutely precise, the rubberband looks 100x better… I think most of our Graphics View followers will […]

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Eskil Abrahamsen Blomfeldt

Debugging JNI-based applications on Windows

Published Tuesday February 27th, 2007 | Comments Off on Debugging JNI-based applications on Windows
Posted in Qt Jambi

One of the most annoying things about developing Qt Jambi has so far been the Java Virtual Machine’s tendency to intercept exceptions in the native code, thus disabling any mechanism installed in the OS serving to handle these. Instead of your application crashing violently, it outputs a message to the console apologizing intently that such […]

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New Feature: Compiler Errors

Published Monday February 26th, 2007 | Comments Off on New Feature: Compiler Errors
Posted in Qt, Qtopia

Since dynamic_cast doesn’t reliably work between library boundaries, Qt introduced qobject_cast to safely cast between QObject subclasses. There’s just one requirement – the class you want to cast to must contain a Q_OBJECT macro. Without the macro, qobject_cast would fail at runtime, which makes it tedious to debug. Qt 4.3 now includes a compile check […]

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Browsers, performance and interventions

Published Sunday February 25th, 2007 | Comments Off on Browsers, performance and interventions
Posted in Aggregated, WebKit

This week I beat WebKit Qt’s rendering into shape. I rewrote the theming and canvas code. It works so nicely that I’m actually pretty happy with it. The rewrite helped me fix issues with statically positioned elements (which just didn’t work on a scrollview/canvas combination I did before). Due to which my blog finally looks […]

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