I'm trying to get the positions of the macOS trackpad. I have looked at this post:know the position of the finger in the trackpad under Mac OS X
and I used the Objective-C code in it and added some extra code:
- (id)initWithFrame:(NSRect)frameRect { self = [super initWithFrame:frameRect]; if (!self) return nil; /* You need to set this to receive any touch event messages. */ [self setAcceptsTouchEvents:YES]; /* You only need to set this if you actually want resting touches. * If you don't, a touch will "end" when it starts resting and * "begin" again if it starts moving again. */ [self setWantsRestingTouches:YES] return self;}/* One of many touch event handling methods. */- (void)touchesBeganWithEvent:(NSEvent *)ev { NSSet *touches = [ev touchesMatchingPhase:NSTouchPhaseBegan inView:self]; for (NSTouch *touch in touches) { /* Once you have a touch, getting the position is dead simple. */ NSPoint fraction = touch.normalizedPosition; NSSize whole = touch.deviceSize; NSPoint wholeInches = {whole.width / 72.0, whole.height / 72.0}; NSPoint pos = wholeInches; pos.x *= fraction.x; pos.y *= fraction.y; NSLog(@"%s: Finger is touching %g inches right and %g inches up " @"from lower left corner of trackpad.", __func__, pos.x, pos.y); }}@interface MyTouchHandler : NSView // Other declarations...- (CGFloat)getXPos;- (CGFloat)getYPos;@end@implementation MyTouchHandler// Other method implementations...- (CGFloat)getXPos { return pos.x }- (CGFloat)getYPos { return pos.y }@endAnd I tried to access the pos.x and pos.y in Python directly with the Objective-C library:
import objcfrom Foundation import NSObject, NSLogclass MyTouchHandler(NSObject): # Other methods... # Define methods to access posX and posY @objc.typedSelector(b"f@:") def getXPos(self): return self.getXPos() @objc.typedSelector(b"f@:") def getYPos(self): return self.getYPos()# Create an instance of the Objective-C classhandler = MyTouchHandler.alloc().init()# Access posX and posY from Pythonx_pos = handler.getXPos()y_pos = handler.getYPos()print(b"Accessed posX: %g, posY: %g", x_pos, y_pos)However, I'm getting this error:
Traceback (most recent call last): File "/Users/xxxxxxxxx/Desktop/osu_pad/main.py", line 20, in <module> x_pos = handler.getXPos() File "/Users/xxxxxxxxx/Desktop/osu_pad/main.py", line 10, in getXPos return self.getXPos() File "/Users/xxxxxxxxx/Desktop/osu_pad/main.py", line 10, in getXPos return self.getXPos() File "/Users/xxxxxxxxx/Desktop/osu_pad/main.py", line 10, in getXPos return self.getXPos() [Previous line repeated 496 more times]RecursionError: maximum recursion depth exceededI'm stuck and I don't really know what to do. And I also think this error doesn't really make sense. What are the necessary steps to fix this issue I am encountering.
