Any mouse movement pattern recognizer for Cocoa? - macos

Question

I need some kind of mouse movement pattern recognizer for Cocoa. What I specifically need is to recognize a mouse "shake" or some kind of circular movement. I've read about Protractor but I would like to know if there is some kind of library already implemented.
I'm currently setting a global event monitor to track mouse movements system wide but I need to be able to recognize specific patterns like circular movement, shake, and similar ones.
_eventMonitor = [NSEvent addGlobalMonitorForEventsMatchingMask:NSMouseMovedMask handler:^(NSEvent *eventoEntrada) {
NSLog(#"Movement detected");
NSPoint loc = [NSEvent mouseLocation];
NSLog(#"x:%.2f y:%.2f",loc.x, loc.y);
}];
Is there any library out there to achieve this task?
Thank you!

Answer 1

You can use the Quartz library in mac OS X
1- define the mouse event mask in your applicationDidFinishLaunching method like that
CFMachPortRef mouseEventTap;
CGEventMask mouseEventMask;
CFRunLoopSourceRef runLoopMouseSource;
// Create an event tap. We are interested in key presses.
mouseEventMask = (1 << kCGEventMouseMoved) ;
mouseEventTap = CGEventTapCreate(kCGSessionEventTap, kCGTailAppendEventTap, 0,
mouseEventMask, mouseCGEventCallback, NULL);
if (!mouseEventTap) {
fprintf(stderr, "failed to create event tap\n");
exit(1);
}
// Create a run loop source.
runLoopMouseSource = CFMachPortCreateRunLoopSource(
kCFAllocatorDefault, mouseEventTap, 0);
// Add to the current run loop.
CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopMouseSource,
kCFRunLoopCommonModes);
// Enable the event tap.
CGEventTapEnable(mouseEventTap, true);
Then implement the call back function mouseCGEventCallback like this
CGEventRef mouseCGEventCallback(CGEventTapProxy proxy, CGEventType type,
CGEventRef event, void *refcon)
{
if (type == kCGEventMouseMoved)
{
//here you can detect any information you need from the event field key
return event;
}
}
For more information about the event field check this
https://developer.apple.com/library/mac/#documentation/Carbon/Reference/QuartzEventServicesRef/Reference/reference.html#//apple_ref/c/tdef/CGEventField
Hope to be helpful for you