//example usage: ./mtrack | ../pincushion/telepoint -b2400

#include <X11/Xlib.h>
#include <stdio.h>

#define X_MAX 639
#define Y_MAX 479

int delay;

int main( int argc, char **argv ) {
	Display* display;
	char *display_name = (char *)getenv("DISPLAY");
	int root_x, root_y;
	int win_x, win_y;
	Window root_w, child_w;
	unsigned int mask;
	int screen_num;
	
	if( argc > 1 ) {
		delay = atoi(argv[1]);
	} else {
		delay = 25000;
	}
	display = XOpenDisplay(display_name);
        screen_num = DefaultScreen(display);
	
	if (display == NULL) {
		fprintf(stderr,"%s: cannot connect to X server '%s'\n",argv[0],display_name);
		return 1;
}

	 
	while(1){
		XQueryPointer(display, RootWindow(display, screen_num), &root_w, &child_w,
		&root_x, &root_y, &win_x, &win_y, &mask);
	 	//printf("%d,%d\n", adjustX(root_x), adjustY(root_y) );
	 	printf("%d,%d\n", adjustX(win_x), adjustY(win_y) );
		fflush(stdout);
		usleep(delay);
	}
	XCloseDisplay(display);
	return 0; 
}

int adjustX( x_val ) {
	int result;

	result = ((int)(((float)x_val/(float)X_MAX) * 255 ));
	if( result > 255 ) result = 255; else if( result < 0 ) result = 0;
	return result;
}

int adjustY( y_val ) {
	int result;
	float ratio;

	ratio = (float)Y_MAX/(float)X_MAX;
	
	result = 255 - (int)( ( ( (float)y_val/(float)Y_MAX ) * 255 ) * ratio );
	if( result > 255 ) result = 255; else if( result < 0 ) result = 0;
	return result;
}