By Andreas Aardal Hanssen

Maybe it’s just too simple

Published Saturday August 26th, 2006 | Comments Off on Maybe it’s just too simple
Posted in Graphics Items, Graphics View, KDE, Labs, Qt

I’ve did some web crawling on Graphics View [keywords graphicsview, qgraphicsview, qgraphicsscene, “graphics view”…], trying to get a feel for what projects out there are poking into Qt 4.2’s snapshots, and starting to use our favorite canvas framework for real-life apps. I was positively surprised. Try it out :-). People are discussing the frame work […]

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New Plastique in 4.2

Published Wednesday June 21st, 2006 | Comments Off on New Plastique in 4.2
Posted in Uncategorized

The new Plastique style (see earlier posts about Plastique2) is making its way into Qt 4.2. It’s not 100% done, but it’s much better than what it used to be. Hopefully it’ll be complete within few weeks after the snapshots are out. Beware of off-by-one rendering errors, though. Once y’all dig your hands into the […]

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Buffered QTextStream + pos() == ?

Published Saturday June 17th, 2006 | Comments Off on Buffered QTextStream + pos() == ?
Posted in Uncategorized

[Disclaimer: Qt 4.2 is not released yet, and anything can still change.] QTextStream in Qt 3 was unbuffered. Feeding bytes by bytes into a codec which appended QChar by QChar into a QString, it did have room for some speed improvements. So in Qt 4.0, we introduced QTextStream’s replacement: … QTextStream! That is – we […]

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Mouse event propagation

Published Saturday May 27th, 2006 | 2 Comments on Mouse event propagation
Posted in Qt, Qtopia

Have you ever implemented mouse handling in a Qt widget? Either in a custom widget, (that inherits QWidget directly,) or by extending some existing widget, let’s say QLabel, with interaction abilities? For the most simple cases, mouse handling is quite intuitive in Qt: just reimplement a mouse handler function (virtual function, inherited from QWidget), and […]

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Fast transformed pixmap/image drawing

Published Saturday May 13th, 2006 | 1 Comment on Fast transformed pixmap/image drawing
Posted in KDE, Qt, Qtopia

From time to time I hear about one particular annoyance people have with Qt’s painting architecture – that drawing transformed pixmaps is horribly slow. Scaled pixmap drawing, for example; something like this: We all know the use case: some image editor that needs to zoom in on an image to plot pixels, or perhaps someone […]

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Some pictures from the Road Show

Published Sunday April 16th, 2006 | Comments Off on Some pictures from the Road Show
Posted in KDE, Qt, Uncategorized

The first half of the Developer Road Show 2006 is done. Coming up is the Cambridge event, and then Paris. And in May, Hamburg. I found some pictures on my phone from the US trip that I’d like to share. So here comes a little summary. I’d like to start off with a picture of […]

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Would you implement Java in Java?

Published Friday April 7th, 2006 | 7 Comments on Would you implement Java in Java?
Posted in KDE, Qt, Uncategorized

When I was at the Trolltech booth at LinuxWorld Expo in Boston, two guys stepped up to our booth, showing interest to our slogans about productivity gain. I asked them about their business, and whether they were in development, adminstration or management. “Development”, they said. So I asked how familiar they were with Qt. Then […]

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End of 1st half of the Road Show

Published Friday April 7th, 2006 | Comments Off on End of 1st half of the Road Show
Posted in KDE, Qt, Uncategorized

Sitting in my hotel room now, 03:53 in Boston. Today, Friday 7th, is the last day of the first half of the Qt Developer Road Show. Can’t seem to sleep! Maybe it’s yesterday’s beers, or maybe I’m nervous for today’s talk. I don’t know ;-). Anyway. We started off in Chicago as mentioned before, then […]

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