chabala/swing-hacks-75

Hack #75 from Swing Hacks book

Hack #75 from Swing Hacks book

This is a significant reworking of the example code for Hack #75, Build an Audio Waveform Display from the book Swing Hacks: Tips & Tools for Building Killer GUIs by Joshua Marinacci & Chris Adamson, ISBN 978-0-596-00907-6.

This particular hack appears to have been originally authored by Jonathan Simon, who also contributed to the book.

The original example code is available from O'Reilly's git repo: https://resources.oreilly.com/examples/9780596009076/tree/master/Ch10-Audio/75

What's different?

• Making use of Java 7 features
• More narrow exception handling
• Using a JFileChooser dialog instead of command line args to select a file to view.
• More intuitive naming of variables, methods, and classes throughout
• Reworked the convoluted technique for reading audio files
• The method to draw the waveform is largely different, both eliminating code that served no purpose and scaling the y axis in a more meaningful way.

Build

Run mvn package to compile and produce the artifact.

Run

Run java -jar target/swing-hacks-75-0.1.0.jar to start the program.

Sample output

This is the waveform for the classic Windows 3.1 chimes.wav, in a narrow window:

and the same window after being stretched wider: