November 2008
Intermediate to advanced
224 pages
5h 2m
English
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Chapter 5. User Interface and Graphics
Introduction
The JRuby community has paid a lot of attention to web development, but JRuby is also a powerful tool for client application development. By allowing the runtime to access the graphics subsystem, JRuby can be used to create GUI applications with the Abstract Windowing Toolkit (AWT), Swing and the Simple Widget Toolkit (SWT), as well as newer projects like Qt Jambi. These toolkits have a rich set of UI widgets but they also permit tight integration with the native operating system. A few recipes in this chapter explain how to use JRuby to create system tray and desktop components and access native GUI libraries.
Given the popularity of declarative programming and Ruby’s powerful Domain-Specific Language (DSL) building capabilities, it is to be expected that JRuby developers would explore ways to improve traditional Java UI programming. There are several options to facilitate Swing development: Swigby, Cheri::Swing, Monkeybars, and Profligacy. Similarly, the Glimmer Eclipse project was created for SWT and QT::JRuby has built-in DSL support.
The Rawr gem is a useful tool for packaging your JRuby applications desktop as well as the Web. This gem provides a set of Rake tasks that can be configured to package your JRuby programs as executable JAR files, Windows executables, Mac OS X applications, and Web Start applications. A recipe also describes techniques for using JRuby to build Java applets.
Image processing is one of the few areas ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.