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/*
* \/\/\
*
* Copyright (C) 2012-2017 Vito Caputo - <vcaputo@gnugeneration.com>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3 as published
* by the Free Software Foundation.
*
* 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/>.
*/
#include <X11/Xlib.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include "util.h"
#include "xserver.h"
/* xserver context shared by vwm and vmon.
* This is the X part monitor.c interfaces with, so monitor.c can avoid depending
* on vwm_t which won't exist in the vmon tool.
*/
static int errhandler(Display *display, XErrorEvent *err)
{
/* TODO */
return 1;
}
/* open the X display server, initializing *xserver on success. */
vwm_xserver_t * vwm_xserver_open(void)
{
vwm_xserver_t *xserver;
if (!(xserver = calloc(sizeof(vwm_xserver_t), 1))) {
VWM_ERROR("Cannot allocate vwm_xserver_t");
goto _err;
}
if (!(xserver->display = XOpenDisplay(NULL))) {
VWM_ERROR("Cannot open display");
goto _err_free;
}
/* prevent children from inheriting the X connection */
if (fcntl(ConnectionNumber(xserver->display), F_SETFD, FD_CLOEXEC) < 0) {
VWM_ERROR("Cannot set FD_CLOEXEC on X connection");
goto _err_xclose;
}
XSetErrorHandler(errhandler); /* TODO, this may not belong here. */
xserver->screen_num = DefaultScreen(xserver->display);
xserver->gc = XCreateGC(xserver->display, XSERVER_XROOT(xserver), 0, NULL);
xserver->cmap = DefaultColormap(xserver->display, xserver->screen_num);
return xserver;
_err_xclose:
XCloseDisplay(xserver->display);
_err_free:
free(xserver);
_err:
return NULL;
}
/* close on opened xserver */
void vwm_xserver_close(vwm_xserver_t *xserver)
{
XFlush(xserver->display);
XCloseDisplay(xserver->display);
free(xserver);
}
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