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#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <X11/Xlib.h>
#include <spnav.h>
#if defined(BUILD_AF_UNIX)
void print_dev_info(void);
#endif
void sig(int s)
{
spnav_close();
exit(0);
}
int main(void)
{
#if defined(BUILD_X11)
Display *dpy;
Window win;
unsigned long bpix;
#endif
spnav_event sev;
signal(SIGINT, sig);
#if defined(BUILD_X11)
if(!(dpy = XOpenDisplay(0))) {
fprintf(stderr, "failed to connect to the X server\n");
return 1;
}
bpix = BlackPixel(dpy, DefaultScreen(dpy));
win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, 1, 1, 0, bpix, bpix);
/* This actually registers our window with the driver for receiving
* motion/button events through the 3dxsrv-compatible X11 protocol.
*/
if(spnav_x11_open(dpy, win) == -1) {
fprintf(stderr, "failed to connect to spacenavd\n");
return 1;
}
#elif defined(BUILD_AF_UNIX)
if(spnav_open()==-1) {
fprintf(stderr, "failed to connect to spacenavd\n");
return 1;
}
print_dev_info();
#else
#error Unknown build type!
#endif
/* spnav_wait_event() and spnav_poll_event(), will silently ignore any non-spnav X11 events.
*
* If you need to handle other X11 events you will have to use a regular XNextEvent() loop,
* and pass any ClientMessage events to spnav_x11_event, which will return the event type or
* zero if it's not an spnav event (see spnav.h).
*/
while(spnav_wait_event(&sev)) {
if(sev.type == SPNAV_EVENT_MOTION) {
printf("got motion event: t(%d, %d, %d) ", sev.motion.x, sev.motion.y, sev.motion.z);
printf("r(%d, %d, %d)\n", sev.motion.rx, sev.motion.ry, sev.motion.rz);
} else { /* SPNAV_EVENT_BUTTON */
printf("got button %s event b(%d)\n", sev.button.press ? "press" : "release", sev.button.bnum);
}
}
spnav_close();
return 0;
}
#if defined(BUILD_AF_UNIX)
void print_dev_info(void)
{
int proto;
char buf[256];
if((proto = spnav_protocol()) == -1) {
fprintf(stderr, "failed to query protocol version\n");
return;
}
printf("spacenav AF_UNIX protocol version: %d\n", proto);
spnav_client_name("simple example");
if(proto >= 1) {
spnav_dev_name(buf, sizeof buf);
printf("Device: %s\n", buf);
spnav_dev_path(buf, sizeof buf);
printf("Path: %s\n", buf);
printf("Buttons: %d\n", spnav_dev_buttons());
printf("Axes: %d\n", spnav_dev_axes());
}
putchar('\n');
}
#endif
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