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A library for registering global hotkeys in java with JNA. The goal is to support X11-based platforms, Windows and MacOSX

branch: master
README.md

JKeyMaster

This is a java library that provides single interface to register Global Hotkeys for several platforms:

  • Windows
  • X11-based systems (in theory, only tested on some Linux distros and PCBSD)
  • Mac OSX

Building

You will need Java 1.6+ and Maven to build

mvn clean package

Maven

<dependencies>
    <dependency>
        <groupId>com.github.tulskiy</groupId>
        <artifactId>jkeymaster</artifactId>
        <version>1.1</version>
    </dependency>
</dependencies>

Testing

To test that the library works on your system, run the jar file

java -cp jkeymaster-1.1.jar com.tulskiy.keymaster.AWTTest

It will open a simple window. At the top is a field that listens to key presses. Choose your hotkey and press Grab button. Check log output to see if it failed. If the log is clean, you should be able to press the hotkey anywhere and it should popup a message.

There's also a Grab media keys button that should register media keys (only Windows and Linux) - Play/Pause, Next Track, Previous Track, Stop.

API Example

Main class is Provider. To get provider for current platform:

Provider provider = Provider.getCurrentProvider(useSwingEventQueue);
provider.init();

where useSwingEventQueue is a boolean parameter specifying whether to fire events on swing event queue or just simple thread. Usefull when your hotkey listener will directly access or modify some swing components.

Provider supports two methods for registering hotkeys - one accepts AWT KeyStroke:

provider.register(KeyStroke.getKeyStroke("control shift PLUS"), listener);

the other accepts a MediaKey parameter:

provider.register(MediaKey.MEDIA_NEXT_TRACK, listener);

For simplicity reasons, it is currently impossible to unregister some particular hotkey, but all hotkeys can be reset.

When you're done using the library, you need to reset hotkeys and stop the provider:

provider.reset();
provider.stop();

Clojure

If you are interested in nicer api from clojure, check out a wrapper library developed by Stian Håklev: https://github.com/houshuang/keymaster-clj

Feedback

I would really appreciate it if you could test the library and post some bug reports. I've tested on Win 7, Win XP, Ubuntu 10.10 and 11.04. I've tested Mac OSX code only in 32-bit virtual machine, and a bit on a real 64-bit machine. So feedback is greatly appreciated, especially from people who have real Mac with real Apple keyboard, BSD users, people with some advanced keyboards, and just anybody who wants to help.

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