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59 lines
2.5 KiB
Markdown
59 lines
2.5 KiB
Markdown
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---
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title: Qumana
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layout: default
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created: 2009-02-02 23:53:17 +0100
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updated: 2009-02-08 13:34:37 +0100
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toc: false
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tags:
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- know-how
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- software
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---
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**Homepage:** [qumana.com](http://www.qumana.com/)
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Qumana is a nice blog editor for Windows and Mac. But it is written in Java and thus should run on any platform.
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Running under Linux
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===================
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Download the Mac-Version (`.zip`) and unpack it. You'll find a directory `Qumana.app` which contains a directory
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`Contents` which contains a directory `Resources` which contains a directory `Java`. There you'll find a `Qumana.jar`
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and some more libraries and configuration files.
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Copy everything to `/opt/qumana`.
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Starting it with
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java -jar Qumana.jar
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shows the splash screen and the blog-manager, where you can add your blog without problems. It even shows the last
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posts of your blog. But you'll crash it when trying to edit a posting or start a new one: The console shows several
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stack traces.
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The thing is: The problem doesn't really lie in Qumana but more in the *GtkLookAndFeel*. This seems to request various
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properties from the system which then flood the *HashTable* which is causing a *StackOverflow*. So you need to switch
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it to e.g. the `MetalLookAndFeel`.
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Usually you can force a Java application to a specific LAF by specifing `-Dswing.laf=com.sun.java.swing.plaf.metal.MetalLookAndFeel`
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as a parameter (might also be `swing.defaultlaf` or `swing.systemlaf`). This didn't work as Qumana queries all
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available LAFs itself and tries to make an intelligent decision. So the new task: How to get rid of the GtkLookAndFeel?
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After some Google'ing, I found [this thread](http://forums.java.net/jive/message.jspa?messageID=188506) in the
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java.net-forums where Scott Violet writes:
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> As you have found, we only return GTK as the system look and feel if you're running under GNOME. There's an
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> environment variable we look for that controls this.
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So which variable might the JRE look for? After looking at the output of `env`, it was obvious. The only variable
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pointing to Gnome was `GNOME_DESKTOP_SESSION_ID`. So try the following:
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env -u GNOME_DESKTOP_SESSION_ID java -jar Qumana.jar
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Now Qumana starts in the MetalLookAndFeel and you can post new entries as well as edit old ones.
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To specify another LAF, use the following:
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env -u GNOME_DESKTOP_SESSION_ID java -Dswing.systemlaf=com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel -jar /opt/qumana/Qumana.jar
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But be warned that the NimbusLAF has display errors with Qumana.
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