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nuq/source/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 <values.h>
#ifdef HAVE_VIDMODE
# include <X11/extensions/xf86vmode.h>
#endif
#include "context_x11.h"
#include "dga_check.h"
#include "qtypes.h"
#include "vid.h"
#include "sys.h"
#include "console.h"
#include "cvar.h"
#include "input.h"
static void (*event_handlers[LASTEvent]) (XEvent *);
qboolean oktodraw = false;
int x_shmeventtype;
static int x_disp_ref_count = 0;
Display *x_disp = NULL;
int x_screen;
Window x_root = None;
XVisualInfo *x_visinfo;
Visual *x_vis;
Window x_win;
Cursor nullcursor = None;
static Atom aWMDelete = 0;
#define X_MASK (VisibilityChangeMask | StructureNotifyMask | ExposureMask)
#ifdef HAVE_VIDMODE
static XF86VidModeModeInfo **vidmodes;
static int nummodes, hasvidmode = 0;
#endif
cvar_t *vid_fullscreen;
static int xss_timeout;
static int xss_interval;
static int xss_blanking;
static int xss_exposures;
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 sig)
{
printf("Received signal %d, exiting...\n", sig);
Sys_Quit();
exit(sig);
//XCloseDisplay(x_disp);
//VID_Shutdown();
//Sys_Error("This death brought to you by the number %d\n", signal_num);
}
void
x11_open_display( void )
{
if ( !x_disp ) {
x_disp = XOpenDisplay( NULL );
if ( !x_disp ) {
Sys_Error("x11_open_display: Could not open display [%s]\n", XDisplayName( NULL ));
}
x_screen = DefaultScreen (x_disp);
x_root = RootWindow (x_disp, x_screen);
// catch signals
signal(SIGHUP, TragicDeath);
signal(SIGINT, TragicDeath);
signal(SIGQUIT, TragicDeath);
signal(SIGILL, TragicDeath);
signal(SIGTRAP, TragicDeath);
signal(SIGIOT, TragicDeath);
signal(SIGBUS, TragicDeath);
/* signal(SIGFPE, TragicDeath); */
signal(SIGSEGV, TragicDeath);
signal(SIGTERM, TragicDeath);
// for debugging only
XSynchronize( x_disp, True );
x_disp_ref_count=1;
} else {
x_disp_ref_count++;
}
}
void
x11_close_display( void )
{
if (nullcursor != None) {
XFreeCursor(x_disp, nullcursor);
nullcursor = None;
}
if (!--x_disp_ref_count) {
XCloseDisplay( x_disp );
x_disp = NULL;
}
}
/*
x11_create_null_cursor
Create an empty cursor
*/
void
x11_create_null_cursor(void)
{
Pixmap cursormask;
XGCValues xgc;
GC gc;
XColor dummycolour;
if (nullcursor != None) return;
cursormask = XCreatePixmap(x_disp, x_root, 1, 1, 1/*depth*/);
xgc.function = GXclear;
gc = XCreateGC(x_disp, cursormask, GCFunction, &xgc);
XFillRectangle(x_disp, cursormask, gc, 0, 0, 1, 1);
dummycolour.pixel = 0;
dummycolour.red = 0;
dummycolour.flags = 04;
nullcursor = XCreatePixmapCursor(x_disp, cursormask, cursormask,
&dummycolour,&dummycolour, 0,0);
XFreePixmap(x_disp,cursormask);
XFreeGC(x_disp,gc);
XDefineCursor(x_disp, x_win, nullcursor);
}
void
x11_set_vidmode(int width, int height)
{
#ifdef HAVE_VIDMODE
int i;
#endif
vid_fullscreen = Cvar_Get ("vid_fullscreen","0",0,"None");
XGetScreenSaver (x_disp, &xss_timeout, &xss_interval, &xss_blanking,
&xss_exposures);
XSetScreenSaver (x_disp, 0, xss_interval, xss_blanking,
xss_exposures);
#ifdef XMESA
const char *str = getenv("MESA_GLX_FX");
if (str != NULL && *str != 'd') {
if (tolower(*str) == 'w') {
Cvar_Set (vid_fullscreen, "0");
} else {
Cvar_Set (vid_fullscreen, "1");
}
}
#endif
#ifdef HAVE_VIDMODE
hasvidmode = VID_CheckVMode(x_disp, NULL, NULL);
if (hasvidmode) {
if (! XF86VidModeGetAllModeLines(x_disp, DefaultScreen(x_disp),
&nummodes, &vidmodes)
|| nummodes <= 0) {
hasvidmode = 0;
}
}
Con_SafePrintf ("hasvidmode = %i\nnummodes = %i\n", hasvidmode, nummodes);
if (hasvidmode && vid_fullscreen->int_val) {
int smallest_mode=0, x=MAXINT, y=MAXINT;
// FIXME: does this depend on mode line order in XF86Config?
for (i=0; i<nummodes; i++) {
if (x>vidmodes[i]->hdisplay || y>vidmodes[i]->vdisplay) {
smallest_mode=i;
x=vidmodes[i]->hdisplay;
y=vidmodes[i]->vdisplay;
}
printf("%dx%d\n",vidmodes[i]->hdisplay,vidmodes[i]->vdisplay);
}
// chose the smallest mode that our window fits into;
for (i=smallest_mode;
i!=(smallest_mode+1)%nummodes;
i=(i?i-1:nummodes-1)) {
if (vidmodes[i]->hdisplay>=width
&& vidmodes[i]->vdisplay>=height) {
XF86VidModeSwitchToMode (x_disp, DefaultScreen (x_disp),
vidmodes[i]);
break;
}
}
XF86VidModeSetViewPort(x_disp, DefaultScreen (x_disp), 0, 0);
_windowed_mouse = Cvar_Get ("_windowed_mouse","1",CVAR_ARCHIVE|CVAR_ROM,"None");
} else
#endif
_windowed_mouse = Cvar_Get ("_windowed_mouse","0",CVAR_ARCHIVE,"None");
}
void
x11_create_window(int width, int height)
{
XSetWindowAttributes attr;
unsigned long mask;
/* window attributes */
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap(x_disp, x_root, x_vis, AllocNone);
attr.event_mask = X_MASK;
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
#ifdef HAVE_VIDMODE
if (hasvidmode && vid_fullscreen->int_val) {
attr.override_redirect=1;
mask|=CWOverrideRedirect;
}
#endif
x_win = XCreateWindow(x_disp, x_root, 0, 0, width, height,
0, x_visinfo->depth, InputOutput,
x_vis, mask, &attr);
/* Give it a title */
XStoreName(x_disp, x_win, "XQuake");
/* Make window respond to Delete events */
aWMDelete = XInternAtom(x_disp, "WM_DELETE_WINDOW", False);
XSetWMProtocols(x_disp, x_win, &aWMDelete, 1);
XMapWindow(x_disp, x_win);
XRaiseWindow(x_disp, x_win);
}
void
x11_restore_vidmode(void)
{
XSetScreenSaver (x_disp, xss_timeout, xss_interval, xss_blanking,
xss_exposures);
#ifdef HAVE_VIDMODE
if (hasvidmode) {
XF86VidModeSwitchToMode (x_disp, DefaultScreen (x_disp),
vidmodes[0]);
XFree(vidmodes);
}
#endif
}
void
x11_grab_keyboard(void)
{
#ifdef HAVE_VIDMODE
if (hasvidmode && vid_fullscreen->int_val) {
XGrabKeyboard(x_disp, x_win, 1, GrabModeAsync, GrabModeAsync,
CurrentTime);
}
#endif
}
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