quakeforge/libs/video/targets/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>
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Copyright (C) 2000, 2001 Jeff Teunissen <deek@quakeforge.net>
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
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
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#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <ctype.h>
#include <sys/time.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
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#include <stdlib.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>
#ifdef HAVE_VIDMODE
# include <X11/extensions/xf86vmode.h>
# ifdef DGA_OLD_HEADERS
# include <X11/extensions/xf86vmstr.h>
# else
# include <X11/extensions/xf86vmproto.h>
# endif
#endif
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#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/input.h"
#include "QF/qargs.h"
#include "QF/qtypes.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "QF/vid.h"
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#include "context_x11.h"
#include "dga_check.h"
#include "vid_internal.h"
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static void (*event_handlers[LASTEvent]) (XEvent *);
qboolean oktodraw = false;
int x_shmeventtype;
static int x_disp_ref_count = 0;
static Cursor nullcursor = None;
Display *x_disp = NULL;
int x_screen;
Window x_root = None;
XVisualInfo *x_visinfo;
Visual *x_vis;
Window x_win;
Colormap x_cmap;
Time x_time;
Time x_mouse_time;
qboolean x_have_focus = false;
#ifdef HAVE_VIDMODE
static XF86VidModeModeInfo **vidmodes;
static int nummodes;
static int original_mode = 0;
static vec3_t x_gamma = {-1, -1, -1};
static qboolean vidmode_avail = false;
#endif
static qboolean vidmode_active = false;
static qboolean vid_context_created = false;
static int pos_x, pos_y;
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#ifdef HAVE_VIDMODE
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static int xss_timeout;
static int xss_interval;
static int xss_blanking;
static int xss_exposures;
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#endif
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static qboolean accel_saved = false;
static int accel_numerator;
static int accel_denominator;
static int accel_threshold;
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1
#define _NET_WM_STATE_TOGGLE 2
static Atom x_net_state;
static Atom x_net_fullscreen;
static void
set_fullscreen (int full)
{
XEvent xev;
xev.xclient.type = ClientMessage;
xev.xclient.serial = 0;
xev.xclient.send_event = True;
xev.xclient.window = x_win;
xev.xclient.message_type = x_net_state;
xev.xclient.format = 32;
if (full)
xev.xclient.data.l[0] = _NET_WM_STATE_ADD;
else
xev.xclient.data.l[0] = _NET_WM_STATE_REMOVE;
xev.xclient.data.l[1] = x_net_fullscreen;
xev.xclient.data.l[2] = 0;
xev.xclient.data.l[3] = 0;
xev.xclient.data.l[4] = 0;
XSendEvent (x_disp, x_root, False,
SubstructureRedirectMask | SubstructureNotifyMask, &xev);
}
static void
configure_notify (XEvent *event)
{
XConfigureEvent *c = &event->xconfigure;
pos_x = c->x;
pos_y = c->y;
#ifdef HAVE_VIDMODE
if (vidmode_active)
X11_ForceViewPort ();
#endif
Sys_MaskPrintf (SYS_VID,
"ConfigureNotify: %ld %d %ld %ld %d,%d (%d,%d) "
"%d %ld %d\n",
c->serial, c->send_event, c->event, c->window, c->x, c->y,
c->width, c->height, c->border_width, c->above,
c->override_redirect);
}
qboolean
X11_AddEvent (int event, void (*event_handler) (XEvent *))
{
if (event >= LASTEvent) {
Sys_MaskPrintf (SYS_VID, "event: %d, LASTEvent: %d\n", event,
LASTEvent);
return false;
}
if (event_handlers[event])
return false;
event_handlers[event] = event_handler;
return true;
}
qboolean
X11_RemoveEvent (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;
}
static inline void
X11_ProcessEventProxy(XEvent *x_event)
{
if (x_event->type >= LASTEvent) {
if (x_event->type == x_shmeventtype)
oktodraw = 1;
return;
}
if (event_handlers[x_event->type])
event_handlers[x_event->type] (x_event);
}
static void
X11_WaitForEvent (int event)
{
XEvent ev;
int type;
while (1) {
XMaskEvent (x_disp, X11_WINDOW_MASK, &ev);
type = ev.type;
X11_ProcessEventProxy (&ev);
if (type == event)
break;
}
}
inline void
X11_ProcessEvent (void)
{
XEvent x_event;
XNextEvent (x_disp, &x_event);
X11_ProcessEventProxy (&x_event);
}
void
X11_ProcessEvents (void)
{
while (XPending (x_disp))
X11_ProcessEvent ();
}
#ifdef HAVE_VIDMODE
static void
X11_SetScreenSaver (void)
{
XGetScreenSaver (x_disp, &xss_timeout, &xss_interval, &xss_blanking,
&xss_exposures);
XSetScreenSaver (x_disp, 0, xss_interval, xss_blanking, xss_exposures);
}
static void
X11_RestoreScreenSaver (void)
{
XSetScreenSaver (x_disp, xss_timeout, xss_interval, xss_blanking,
xss_exposures);
}
#endif
void
X11_OpenDisplay (void)
{
if (!x_disp) {
x_disp = XOpenDisplay (NULL);
if (!x_disp) {
Sys_Error ("X11_OpenDisplay: Could not open display [%s]",
XDisplayName (NULL));
}
x_net_state = XInternAtom (x_disp, "_NET_WM_STATE", False);
x_net_fullscreen = XInternAtom (x_disp, "_NET_WM_STATE_FULLSCREEN",
False);
x_screen = DefaultScreen (x_disp);
x_root = RootWindow (x_disp, x_screen);
XSynchronize (x_disp, true); // only for debugging
x_disp_ref_count = 1;
} else {
x_disp_ref_count++;
}
}
void
X11_CloseDisplay (void)
{
if (!--x_disp_ref_count) {
X11_RestoreVidMode ();
X11_RestoreGamma ();
if (nullcursor != None) {
XFreeCursor (x_disp, nullcursor);
nullcursor = None;
}
XCloseDisplay (x_disp);
x_disp = 0;
}
}
/*
X11_CreateNullCursor
Create an empty cursor (in other words, make it disappear)
*/
void
X11_CreateNullCursor (void)
{
Pixmap cursormask;
XGCValues xgc;
GC gc;
XColor dummycolour;
if (nullcursor != None)
return;
cursormask = XCreatePixmap (x_disp, x_root, 1, 1, 1);
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);
}
static Bool
check_mouse_event (Display *disp, XEvent *ev, XPointer arg)
{
XMotionEvent *me = &ev->xmotion;
if (ev->type != MotionNotify)
return False;
if ((unsigned) me->x != viddef.width / 2
|| (unsigned) me->y != viddef.height / 2)
return False;
return True;
}
static void
X11_SetMouse (void)
{
XEvent ev;
XWarpPointer (x_disp, None, x_win, 0, 0, 0, 0, 0, 0);
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XWarpPointer (x_disp, None, x_win, 0, 0, 0, 0,
viddef.width / 2, viddef.height / 2);
XPeekIfEvent (x_disp, &ev, check_mouse_event, 0);
x_mouse_time = ev.xmotion.time;
}
#ifdef HAVE_VIDMODE
static vec3_t *
X11_GetGamma (void)
{
XF86VidModeGamma xgamma;
vec3_t *temp;
if (vid_gamma_avail && vid_system_gamma->int_val) {
if (XF86VidModeGetGamma (x_disp, x_screen, &xgamma)) {
if ((temp = malloc (sizeof (vec3_t)))) {
(*temp)[0] = xgamma.red;
(*temp)[1] = xgamma.green;
(*temp)[2] = xgamma.blue;
return temp;
}
return NULL;
}
}
vid_gamma_avail = false;
return NULL;
}
#endif
void
X11_SetVidMode (int width, int height)
{
const char *str = getenv ("MESA_GLX_FX");
if (vidmode_active)
return;
if (str && (tolower (*str) == 'f')) {
Cvar_Set (vid_fullscreen, "1");
}
#ifdef HAVE_VIDMODE
{
static int initialized = 0;
if (!vidmode_avail)
vidmode_avail = VID_CheckVMode (x_disp, NULL, NULL);
if (!initialized && vidmode_avail) {
vec3_t *temp;
initialized = 1;
vid_gamma_avail = true;
temp = X11_GetGamma ();
if (temp && temp[0] > 0) {
x_gamma[0] = (*temp)[0];
x_gamma[1] = (*temp)[1];
x_gamma[2] = (*temp)[2];
vid_gamma_avail = true;
free (temp);
}
}
if (vid_fullscreen->int_val && vidmode_avail) {
int i, dotclock;
int best_mode = 0;
qboolean found_mode = false;
XF86VidModeModeLine orig_data;
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XF86VidModeGetAllModeLines (x_disp, x_screen, &nummodes,
&vidmodes);
XF86VidModeGetModeLine (x_disp, x_screen, &dotclock, &orig_data);
for (i = 0; i < nummodes; i++) {
if ((vidmodes[i]->hdisplay == orig_data.hdisplay) &&
(vidmodes[i]->vdisplay == orig_data.vdisplay)) {
original_mode = i;
break;
}
}
for (i = 0; i < nummodes; i++) {
if ((vidmodes[i]->hdisplay == viddef.width) &&
(vidmodes[i]->vdisplay == viddef.height)) {
found_mode = true;
best_mode = i;
break;
}
}
if (found_mode) {
Sys_MaskPrintf (SYS_VID, "VID: Chose video mode: %dx%d\n",
viddef.width, viddef.height);
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XF86VidModeSwitchToMode (x_disp, x_screen,
vidmodes[best_mode]);
vidmode_active = true;
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X11_SetScreenSaver ();
} else {
Sys_Printf ("VID: Mode %dx%d can't go fullscreen.\n",
viddef.width, viddef.height);
vidmode_avail = vidmode_active = false;
}
}
}
#endif
}
static void
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X11_UpdateFullscreen (cvar_t *fullscreen)
{
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if (!vid_context_created)
return;
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if (!fullscreen->int_val) {
X11_RestoreVidMode ();
set_fullscreen (0);
IN_UpdateGrab (in_grab);
X11_SetMouse ();
return;
} else {
set_fullscreen (1);
X11_SetVidMode (viddef.width, viddef.height);
X11_SetMouse ();
IN_UpdateGrab (in_grab);
}
}
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static void
VID_Center_f (void)
{
X11_ForceViewPort ();
}
void
X11_Init_Cvars (void)
{
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Cmd_AddCommand ("vid_center", VID_Center_f, "Center the view port on the "
"quake window in a virtual desktop.\n");
vid_fullscreen = Cvar_Get ("vid_fullscreen", "0", CVAR_ARCHIVE,
&X11_UpdateFullscreen,
"Toggles fullscreen game mode");
vid_system_gamma = Cvar_Get ("vid_system_gamma", "1", CVAR_ARCHIVE, NULL,
"Use system gamma control if available");
}
void
X11_CreateWindow (int width, int height)
{
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char *resname;
unsigned long mask;
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XSetWindowAttributes attr;
XClassHint *ClassHint;
XSizeHints *SizeHints;
X11_AddEvent (ConfigureNotify, configure_notify);
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// window attributes
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = x_cmap;
if (!attr.colormap)
attr.colormap = XCreateColormap (x_disp, x_root, x_vis, AllocNone);
attr.event_mask = X11_MASK;
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
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x_win = XCreateWindow (x_disp, x_root, 0, 0, width, height, 0,
x_visinfo->depth, InputOutput, x_vis, mask, &attr);
// Set window size hints
SizeHints = XAllocSizeHints ();
if (SizeHints) {
SizeHints->flags = (PMinSize | PMaxSize);
SizeHints->min_width = width;
SizeHints->min_height = height;
SizeHints->max_width = width;
SizeHints->max_height = height;
XSetWMNormalHints (x_disp, x_win, SizeHints);
XFree (SizeHints);
}
// Set window title
X11_SetCaption (va ("%s", PACKAGE_STRING));
// Set icon name
XSetIconName (x_disp, x_win, PACKAGE_NAME);
// Set window class
ClassHint = XAllocClassHint ();
if (ClassHint) {
resname = strrchr (com_argv[0], '/');
ClassHint->res_name = (char *)(resname ? resname + 1 : com_argv[0]);
ClassHint->res_class = (char *)PACKAGE;
XSetClassHint (x_disp, x_win, ClassHint);
XFree (ClassHint);
}
XMapWindow (x_disp, x_win);
X11_WaitForEvent (ConfigureNotify);
vid_context_created = true;
if (vid_fullscreen->int_val) {
X11_UpdateFullscreen (vid_fullscreen);
}
XRaiseWindow (x_disp, x_win);
}
void
X11_RestoreVidMode (void)
{
#ifdef HAVE_VIDMODE
if (vidmode_active) {
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X11_RestoreScreenSaver ();
XF86VidModeSwitchToMode (x_disp, x_screen, vidmodes[original_mode]);
XFree (vidmodes);
vidmode_active = false;
}
#endif
}
void
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X11_SetCaption (const char *text)
{
if (x_disp && x_win && text)
XStoreName (x_disp, x_win, text);
}
void
X11_ForceViewPort (void)
{
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#ifdef HAVE_VIDMODE
if (!vidmode_avail || !vid_context_created)
return;
XF86VidModeSetViewPort (x_disp, x_screen, pos_x, pos_y);
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#endif
}
qboolean
X11_SetGamma (double gamma)
{
#ifdef HAVE_VIDMODE
# ifdef X_XF86VidModeSetGamma
XF86VidModeGamma xgamma;
if (vid_gamma_avail && vid_system_gamma->int_val && x_have_focus) {
xgamma.red = xgamma.green = xgamma.blue = (float) gamma;
if (XF86VidModeSetGamma (x_disp, x_screen, &xgamma))
return true;
}
# endif
#endif
return false;
}
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void
X11_RestoreGamma (void)
{
#ifdef HAVE_VIDMODE
# ifdef X_XF86VidModeSetGamma
XF86VidModeGamma xgamma;
if (vid_gamma_avail && x_gamma[0] > 0) {
xgamma.red = x_gamma[0];
xgamma.green = x_gamma[1];
xgamma.blue = x_gamma[2];
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XF86VidModeSetGamma (x_disp, x_screen, &xgamma);
}
# endif
#endif
}
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void
X11_SaveMouseAcceleration (void)
{
accel_saved = true;
XGetPointerControl(x_disp, &accel_numerator, &accel_denominator,
&accel_threshold);
}
void
X11_RemoveMouseAcceleration (void)
{
XChangePointerControl(x_disp, true, false, 0, 1, 0);
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}
void
X11_RestoreMouseAcceleration (void)
{
if (!accel_saved)
return;
XChangePointerControl(x_disp, true, true, accel_numerator,
accel_denominator, accel_threshold);
accel_saved = false;
}