void *cursor_motion_thread(void *targs) {
struct MCursor *this = (struct MCursor *)targs;
Display *dpy;
int xi_opcode, event, error;
XEvent ev;
dpy = XOpenDisplay(NULL);
if (!dpy) {
MLOGE("Failed to open display.\n");
return (void *)-1;
}
if (!XQueryExtension(dpy, "XInputExtension", &xi_opcode, &event, &error)) {
MLOGE("X Input extension not available.\n");
XCloseDisplay(dpy);
return (void *)-1;
}
if (!has_xi2(dpy)){
XCloseDisplay(dpy);
return (void *)-1;
}
/* select for XI2 events */
select_events(dpy, DefaultRootWindow(dpy));
while(1)
{
XGenericEventCookie *cookie = &ev.xcookie;
Window root_ret, child_ret;
int root_x, root_y;
int win_x, win_y;
unsigned int mask;
XNextEvent(dpy, &ev);
if (cookie->type == GenericEvent && cookie->extension == xi_opcode && XGetEventData(dpy, cookie)){
if (cookie->evtype == XI_RawMotion) {
XQueryPointer(dpy, DefaultRootWindow(dpy), &root_ret, &child_ret, &root_x, &root_y, &win_x, &win_y, &mask);
update_cursor(dpy, this->mMdpy, &this->mBuffer, root_x, root_y);
}
XFreeEventData(dpy, cookie);
}
}
XCloseDisplay(dpy);
return NULL;
}
int main (int argc, char **argv)
{
Display *dpy;
int xi_opcode, event, error;
Window win;
XEvent ev;
dpy = XOpenDisplay(NULL);
if (!dpy) {
fprintf(stderr, "Failed to open display.\n");
return -1;
}
if (!XQueryExtension(dpy, "XInputExtension", &xi_opcode, &event, &error)) {
printf("X Input extension not available.\n");
return -1;
}
if (!has_xi2(dpy))
return -1;
/* Create a simple window */
win = create_win(dpy);
/* select for XI2 events */
select_events(dpy, win);
while(1) {
XGenericEventCookie *cookie = &ev.xcookie;
XNextEvent(dpy, &ev);
if (cookie->type != GenericEvent ||
cookie->extension != xi_opcode)
continue;
if (XGetEventData(dpy, cookie))
{
printf("Event type %d received\n", cookie->evtype);
XFreeEventData(dpy, &ev.xcookie);
}
}
return 0;
}
