58 lines
2.1 KiB
Markdown
58 lines
2.1 KiB
Markdown
---
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author: einar
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comments: true
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date: 2014-01-04 08:03:18+00:00
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layout: page
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slug: an-expedition-in-the-qml-realm
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title: An expedition in the QML realm
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wordpress_id: 1270
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categories:
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- KDE
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- Linux
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tags:
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- KDE
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- Linux
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- plasma
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- QML
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---
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Among the different widgets I use on my desktop, there is a small one which tells me my current public IP address. The reason I'm having it is due to the fact that my own ISP uses a NAT for almost all its customers (don't ask - long story) and so I need to keep tabs on my current IP, because it may have been blacklisted, and so on.
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Up to now I was using [this plasmoid](http://kde-apps.org/content/show.php?content=147229) written in Python, but the code had several issues and used its own way of getting the public IP. However, I knew Plasma has **already** a way to give you your IP, that is the _geolocation _DataEngine. I thought of adjusting the current widget to use this engine, but then I thought "_What if I make one in QML?"_.
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It turned out to be a rather easy task, which I accomplished in less than one hour, by reading up some documentation, examples and of course pestering people on IRC. ;)
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All I needed to have the IP ready was
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{% highlight javascript %}
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PlasmaCore.DataSource {
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id: dataSource
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dataEngine: "geolocation"
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connectedSources: ['location']
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interval: 500
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onNewData: {
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if (sourceName == 'location') {
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ipAddr.text = data.ip
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}
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}
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{% endhighlight %}
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where `ipAddr` was a Text element.
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And that's how is the final result (mimicking the other widget I took it from):
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There are still a number of issues, for example getting the right size when started, and ensuring it's not resized to a too little size. But I was surprised that it was so easy.
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Interested parties can grab it by cloning and installing:
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{% highlight bash %}
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git clone https://git.dennogumi.org/kde/ip-address-viewer
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plasmapkg -i ip-address-viewer/
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{% endhighlight %}
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Suggestions on code quality are welcome.
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