almost working, but there is an SIGABRT
D_PRELOAD=./spacenav-lib-hack/build/Debug/src/libspnav-lib-hack.so freecad
FreeCAD 0.16, Libs: 0.16R
© Juergen Riegel, Werner Mayer, Yorik van Havre 2001-2015
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No module named WebGui
spnav-lib-hack: instead of spnav_x11_open(0x557304430830, 0xb600088) calling spnav_open() = 0
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
freecad: ../../src/xcb_io.c:259: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
Neúspěšně ukončen (SIGABRT) (core dumped [obraz paměti uložen])
/**
* Spacenav lib hack
* Copyright © 2019 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdint.h>
#include <dlfcn.h>
#include <stdlib.h>
#include <pthread.h>
#include <X11/Xlib.h>
#include <spnav.h>
static Display* spacenav_hack_dpy;
static Window spacenav_hack_win;
static pthread_t spacenav_hack_thread;
// from proto_x11.c (spacenavd)
static Atom xa_event_motion, xa_event_bpress, xa_event_brelease, xa_event_cmd;
static float x11_sens = 1.0;
/**
* This function is based on proto_x11.c (spacenavd) written by:
* Copyright (C) 2007-2019 John Tsiombikas <nuclear@member.fsf.org>
* and published under GNU GPLv3+
*
* @param ev
* @param dpy
* @param win
*/
static void send_xevent(spnav_event *ev, Display* dpy, Window win) {
int i;
XEvent xevent;
if (!dpy) return;
// if(setjmp(jbuf)) return;
xevent.type = ClientMessage;
xevent.xclient.send_event = False;
xevent.xclient.display = dpy;
xevent.xclient.window = win;
switch (ev->type) {
case SPNAV_EVENT_MOTION:
xevent.xclient.message_type = xa_event_motion;
xevent.xclient.format = 16;
for (i = 0; i < 6; i++) {
float val = (float) ev->motion.data[i] * x11_sens;
xevent.xclient.data.s[i + 2] = (short) val;
}
xevent.xclient.data.s[0] = xevent.xclient.data.s[1] = 0;
xevent.xclient.data.s[8] = ev->motion.period;
break;
case SPNAV_EVENT_BUTTON:
xevent.xclient.message_type = ev->button.press ? xa_event_bpress : xa_event_brelease;
xevent.xclient.format = 16;
xevent.xclient.data.s[2] = ev->button.bnum;
break;
default:
break;
}
XSendEvent(dpy, win, False, 0, &xevent);
XFlush(dpy);
}
static void* spacenav_hack_translate_events(void* arg) {
pthread_setname_np(pthread_self(), "spacenav-hack"); // can be found with: ps H -o 'pid tid cmd comm'
spnav_event event;
while (1) {
if (spnav_wait_event(&event)) {
//fprintf(stderr, "spnav-lib-hack: got event\n");
XLockDisplay(spacenav_hack_dpy);
send_xevent(&event, spacenav_hack_dpy, spacenav_hack_win);
XUnlockDisplay(spacenav_hack_dpy);
}
}
}
int spnav_x11_open(Display* dpy, Window win) {
spacenav_hack_dpy = dpy;
spacenav_hack_win = win;
int result = spnav_open();
fprintf(stderr, "spnav-lib-hack: instead of spnav_x11_open(%p, 0x%lx) calling spnav_open() = %d\n", dpy, win, result);
if (result == 0) {
xa_event_motion = XInternAtom(dpy, "MotionEvent", False);
xa_event_bpress = XInternAtom(dpy, "ButtonPressEvent", False);
xa_event_brelease = XInternAtom(dpy, "ButtonReleaseEvent", False);
xa_event_cmd = XInternAtom(dpy, "CommandEvent", False);
XInitThreads();
pthread_create(&spacenav_hack_thread, NULL, spacenav_hack_translate_events, NULL);
}
return result;
}
/*
int spnav_x11_event(const XEvent* xev, spnav_event* event) {
xev.
static int (*real_spnav_x11_event)(const XEvent*, spnav_event*) = NULL;
if (!real_spnav_x11_event) real_spnav_x11_event = dlsym(RTLD_NEXT, "spnav_x11_event");
int result = real_spnav_x11_event(xev, event);
if (result == SPNAV_EVENT_MOTION || result == SPNAV_EVENT_BUTTON) fprintf(stderr, "spnav-lib-hack: spnav_x11_event() = %d\n", result);
return result;
}
*/
/*
int spnav_x11_open(Display* dpy, Window win) {
static int (*real_spnav_x11_open)(Display*, Window) = NULL;
if (!real_spnav_x11_open) real_spnav_x11_open = dlsym(RTLD_NEXT, "spnav_x11_open");
int result = real_spnav_x11_open(dpy, win);
fprintf(stderr, "spnav-lib-hack: spnav_x11_open() = %d\n", result);
return result;
}
*/
/*
int spnav_open() {
return -1;
}
*/
/*
int spnav_open() {
static int (*real_spnav_open)() = NULL;
if (!real_spnav_open) real_spnav_open = dlsym(RTLD_NEXT, "spnav_open");
int result = real_spnav_open();
// fprintf(stderr, "spnav-lib-hack: spnav_open() = %d\n", result);
return result;
}
*/