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Linux Debian and Skype – no microphone

Today I had a strange problem with my skype installation in Debian. The microphone seems not to work. Finally I found the solution here.

The trick is the following:

  1. Open the Sound settings when you start a skype test call.
  2. Click on the tab ‘Recourding’
  3. Choose the option : show ‘all streams’ at the bottom of the tab
  4. Now when the skype call runs you will see the skype application appearing
    skype_audio
  5. There is a tiny button muting the microphone. This option was selected in my case. Deselecting the mute button solved the problem for me
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Why I started another Singe-Page-Application Framework

Today I decided to start a new open source project providing a singe-page-application (SPA) framework. This sounds crazy, because we live in a time in which so many different spa frameworks are developed.

The reason why I am interested in singe-page-application frameworks is that I have an existing complex JEE Application build on JSF 2.0 and I am looking for a way to reduce the evolved complexity of my web front-end. I don’t think that JSF can compete with SPA in modern web applications. On the other hand I already have an existing Rest Service API in my application. So this is the reason why I stared to look around for a SPA framework that fits my needs.

Continue reading “Why I started another Singe-Page-Application Framework”

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Single Page Applications – AngularJS vs. Ember.js

I just started to develop my first JavaScript single page application (SPA) and so I took a look on different JavaScript frameworks. I just want to share some of my thoughts here:

My own background is JEE and I have developed a JEE application with EJBs, JSF and a little bit jQuery. Because of the fact that my existing project (imixs-workflow) provides already a REST API, migrating from JSF to a JavaScript SPA looks promising .

Continue reading “Single Page Applications – AngularJS vs. Ember.js”

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Eclipse Luna crashes on Ubuntu

Today I had strange problems with Eclipse Luna after an Ubuntu Update.
The solution was changing the eclipse.ini by adding

-Dorg.eclipse.swt.browser.DefaultType=mozilla

and changing the memory settings.
Thanks to Bård Aase Blog: http://blog.elzapp.com/2014/07/01/making-eclipse-kepler-and-luna-work-on-ubuntu.html

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Eclipse Mars on Debian Jessie with Gnome 3

After downloading the new Eclipse IDE Mars I was disappointed of the corrupted design. Several dialog pages did not work as expected or were empty until the dialog window was resized.

eclipse_mars_properties_dialog_bpmn

As Eclipse release 4.5 (Mars)  is based on GTK 3, the problem in my case was the missing library “gtk3-engines-oxygen”. This it the so called Oxygen widget theme for GTK3-based applications like the Eclipse Mars release.

After installing the missing library with apt:

apt-get install gtk3-engines-oxygen

the Eclipse Mars Release works perfect!

eclipse_mars_gtk_screen_11

Customize Eclipse them Jeeeyul’s Eclipse Themes

A very nice plug-in for Eclipse is the ‘Jeeeyul’s Eclipse Themes‘.  This plug-in provides a set of cool themes for eclipse and also a cool editor to customize the theme individually.

Adjusting the window margins

Another annoying thing in Eclipse GTK with Gnome is the small margin between to windows so you cant grasp the space with the mouse to resize the view.This problem can also be solved directly with the Jeeeyul’s plug-in:

In the ‘General’ section of the Jeeeyul’s Themes section you can change the “Winddow Pacing”. Disable the option ‘Cast Shadow’ and set ‘Part Stack Spacing’ to 5 and ‘Margins’ to 0. After that you need to restart Eclipse.

Alternative: Disable GTK3

An alternative is to simply deactivate GTK3 for Eclipse Mars. You need to set the environment variable ‘SWT_GTK3’ to ‘0’.

I am using the following bash start script to launch Eclipse Mars:

#!/bin/bash
cd /opt/eclipse-jee-mars/
export SWT_GTK3=0
./eclipse

See also the comments below.

 

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Using Fonts Instead Of Icons For Responsive Web Design

Usually in most web applications icons are used for an appealing design. But icons have the disadvantage that you can’t  change the design easily without replacing the hole set of icons especially if you need different colors or a different size of your iconset. The last one becomes a big problem when you try to develop a responsive web design. Continue reading “Using Fonts Instead Of Icons For Responsive Web Design”

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Open Source – what does it really mean?

Open Source is one of the most misunderstood domains in our new society. I just read an article about the failure of the sharing economy. The author closed with the idea, that really no one would like to share something if he doesn’t get something back which brings him into an better position. And this is not inhumane.
The failure of the sharing economy brings me to new thoughts about open source. I am working in a open source project since several years. What does it mean to me? It is not to give my work to other companies for free. We run a company which provides commercial services. These services mean: “Hey we have a cool fancy technology. If you like it, we can help you to get started“. And this is because software development is not one of the easiest things in our live.
So what I am sharing in my open source project is not the enterprise software to be used by the big industry for free. I just share my thoughts about problems in the area of software development. My thoughts are open for anyone who is interested in discussing those kinds of software problems. It’s like sitting in the pub and talking with someone about the last football match. Just sharing thoughts and come up with new ideas. That’s the meaning of Open Source.

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