sciss / audiowidgets   1.3.1

Contributors Wanted GNU Library General Public License v2.1 only GitHub

Specialized Swing widgets for audio applications in Scala. Mirror of

Scala versions: 3.x 2.13 2.12 2.11 2.10


Build Status Maven Central


AudioWidgets is a library providing specialized widgets for audio applications. It is Swing based and written in the Scala programming language. (C)opyright 2011–2022 by Hanns Holger Rutz. All rights reserved. It is released under the GNU Lesser General Public License v2.1+ and comes with absolutely no warranties. To contact the author, send an e-mail to contact at

The included font "Familida Mono" is based on a font by darunio123456789 and released under a Creative Commons CC BY-SA 3.0 license.

requirements / installation

This projects builds with sbt against Scala 2.13, 2.12, Dotty. The last version support Scala 2.11 was 1.14.3. There are three subprojects: core, swing and app, where swing depends on core and app depends on swing.

  • The core project provides widgets based on plain Java Swing
  • swing wraps them for usage within Scala-Swing. Therefore, swing adds a further dependency on scala-swing.
  • app adds time based components for use in desktop applications. It also depends on the desktop library.

To use the library in your project:

"de.sciss" %% "audiowidgets-core"  % v
"de.sciss" %% "audiowidgets-swing" % v
"de.sciss" %% "audiowidgets-app"   % v

The current version v is "2.4.3".

To view a demo of the widgets from the sbt console:

> project audiowidgets-core
> test:run

> project audiowidgets-swing
> test:run

> project audiowidgets-app
> test:run


The following components are available:

  • Axis -- A general horizontal or vertical axis component
  • LCDPanel -- A JPanel with bevel border and glossy background color
  • PeakMeter -- A dual peak and RMS meter suitable for audio signals
  • Transport -- A tool-bar for transport controls
  • WavePainter -- A painter class for waveforms, along with sub types for multi resolution display
  • DualRangeSlider -- A QuickTime Player style slider combining single value and a range thumb
  • RotaryKnob -- A single value slider styled as a rotary knob

The API docs are currently the only source of documentation (sbt doc).