/*
CS 349 Code Examples: X Windows and XLib

    eventloop.min.cpp   Demos events by displaying mouse motion events
    					to console (minimal version)

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See associated makefile for compiling instructions

*/

#include <cstdlib>
#include <iostream>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

using namespace std;

Display* display;
Window window;

int main( int argc, char *argv[] ) {
	display = XOpenDisplay("");
	if (display == NULL) exit (-1);
	int screennum = DefaultScreen(display);
	long background = WhitePixel(display, screennum);
	long foreground = BlackPixel(display, screennum);
	window = XCreateSimpleWindow(display, DefaultRootWindow(display),
	                             10, 10, 300, 200, 2, foreground, background);
	XSelectInput(display, window,
	             PointerMotionMask | KeyPressMask); // select events
	XMapRaised(display, window);
	XFlush(display);
	XEvent event; // save the event here
	while ( true ) { // event loop until 'exit'
		XNextEvent( display, &event ); // wait for next event
		cout << event.type << " ";

		switch ( event.type ) {
		case MotionNotify: // mouse movement
			cout << event.xmotion.x << ","
			     << event.xmotion.y << endl;
			break;
		case KeyPress: // any keypress
			exit(0);
			break;
		}
	}
	XCloseDisplay(display);
}