JNI classes to access the Cocoa API.
Currently there's only a WindowCapture class that provides helper methods for retrieving the
windows that belong to a certain process, and for retrieving a snapshot of a given window.
Run the make.sh file, this will compile the JNI classes and pack them into a cocoa4java.jar jar file.
make.sh will also build a libcocoa4java.dylib dynamic library that will be loaded by the WindowCapture
class. Please make sure that this library resides within java.library.path so that it can be loaded.
The build command outputs the files into the build folder.
The main class is com.cristik.cocoa4java.WindowCapture, which at this time exposes two methods:
public native static WindowInfo[] findWindowsForPID(int pid)- can be used to find all windowns belonging to the given process; if -1 is passed all windows in system are returned
public native static byte[] getWindowSnapshotData(int windowNumer, int format)- returns a snapshot of the given window
There's a WindowCaptureTest class in the examples folder, when run it expects as first argument the PID
of the process to take the windows from (or -1 for all windows in the system), and saves a snapshot of
those windows into the Pictures folder. I think this example covers all functionalities currently supported
by this project.
Example of how to run the example (assuming you're in the root directory, and you have executed make.sh):
java -Djava.library.path=build -cp build/cocoa4java.jar:examples WindowCaptureTest 123