quakeforge-old/common/context_x11.c

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/*
context_x11.c
general x11 context layer
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 2000 Zephaniah E. Hull <warp@whitestar.soark.net>
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
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 2
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, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#include <config.h>
#include <ctype.h>
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
#include <X11/extensions/XShm.h>
#include <errno.h>
#include <context_x11.h>
#include <qtypes.h>
#include <vid.h>
#include <sys.h>
static void (*event_handlers[LASTEvent])(XEvent *);
qboolean oktodraw = false;
int x_shmeventtype;
Display *x_disp = NULL;
static int x_disp_ref_count = 0;
qboolean
x11_add_event(int event, void (*event_handler)(XEvent *))
{
if (event >= LASTEvent) {
printf("event: %d, LASTEvent: %d\n", event, LASTEvent);
return false;
}
if (event_handlers[event] != NULL)
return false;
event_handlers[event] = event_handler;
return true;
}
qboolean
x11_del_event(int event, void (*event_handler)(XEvent *))
{
if (event >= LASTEvent)
return false;
if (event_handlers[event] != event_handler)
return false;
event_handlers[event] = NULL;
return true;
}
void
x11_process_event(void)
{
XEvent x_event;
XNextEvent(x_disp, &x_event);
if (x_event.type >= LASTEvent) {
// FIXME: KLUGE!!!!!!
if (x_event.type == x_shmeventtype)
oktodraw = 1;
return;
}
if (event_handlers[x_event.type])
event_handlers[x_event.type](&x_event);
}
void
x11_process_events(void)
{
/* Get events from X server. */
while (XPending(x_disp)) {
x11_process_event();
}
}
// ========================================================================
// Tragic death handler
// ========================================================================
static void TragicDeath(int signal_num)
{
//XCloseDisplay(x_disp);
VID_Shutdown();
Sys_Error("This death brought to you by the number %d\n", signal_num);
}
void
x11_open_display(void)
{
struct sigaction sa;
if (!x_disp) {
x_disp = XOpenDisplay(0);
if (!x_disp) {
Sys_Error("VID: Could not open display [%s]\n", XDisplayName(0));
}
// catch signals
sigaction(SIGINT, 0, &sa);
sa.sa_handler = TragicDeath;
sigaction(SIGINT, &sa, 0);
sigaction(SIGTERM, &sa, 0);
// for debugging only
XSynchronize(x_disp, True);
} else {
x_disp_ref_count++;
}
}
void
x11_close_display(void)
{
if (!--x_disp_ref_count) {
XCloseDisplay(x_disp);
x_disp = NULL;
}
}