void wsScreenSaverOn(Display *mDisplay)
{
int nothing;
#ifdef CONFIG_XDPMS
if (dpms_disabled) {
if (DPMSQueryExtension(mDisplay, ¬hing, ¬hing)) {
if (!DPMSEnable(mDisplay))
mp_msg(MSGT_GPLAYER, MSGL_ERR, MSGTR_WS_DpmsUnavailable); // restoring power saving settings
else {
// DPMS does not seem to be enabled unless we call DPMSInfo
BOOL onoff;
CARD16 state;
DPMSInfo(mDisplay, &state, &onoff);
if (onoff)
mp_msg(MSGT_GPLAYER, MSGL_V, "Successfully enabled DPMS.\n");
else
mp_msg(MSGT_GPLAYER, MSGL_STATUS, MSGTR_WS_DpmsNotEnabled);
}
}
}
#endif
if (timeout_save) {
int dummy, interval, prefer_blank, allow_exp;
XGetScreenSaver(mDisplay, &dummy, &interval, &prefer_blank, &allow_exp);
XSetScreenSaver(mDisplay, timeout_save, interval, prefer_blank, allow_exp);
XGetScreenSaver(mDisplay, &timeout_save, &interval, &prefer_blank, &allow_exp);
}
}
void wsScreenSaverOff(Display *mDisplay)
{
int interval, prefer_blank, allow_exp, nothing;
#ifdef CONFIG_XDPMS
if (DPMSQueryExtension(mDisplay, ¬hing, ¬hing)) {
BOOL onoff;
CARD16 state;
DPMSInfo(mDisplay, &state, &onoff);
if (onoff) {
Status stat;
mp_dbg(MSGT_GPLAYER, MSGL_DBG2, "Disabling DPMS.\n");
dpms_disabled = 1;
stat = DPMSDisable(mDisplay); // monitor powersave off
mp_dbg(MSGT_GPLAYER, MSGL_DBG2, "stat: %d.\n", stat);
}
}
#endif
XGetScreenSaver(mDisplay, &timeout_save, &interval, &prefer_blank, &allow_exp);
if (timeout_save)
XSetScreenSaver(mDisplay, 0, interval, prefer_blank, allow_exp); // turning off screensaver
}
/**
* Init the screen saver save/restore mechanism.
*/
void X11ScreenSaverSettingsInit()
{
int dummy;
Display *display = QX11Info::display();
gX11ScreenSaverDpmsAvailable =
DPMSQueryExtension(display, &dummy, &dummy);
}
bool X11Helper::OpenXConnection()
{
DEBUG_ASSERT( Dpy == nullptr && Win == None );
Dpy = XOpenDisplay(0);
if( Dpy == nullptr )
return false;
XSetIOErrorHandler( FatalCallback );
XSetErrorHandler( ErrorCallback );
int event_base, error_base;
display_supports_dpms_extension= DPMSQueryExtension(Dpy, &event_base, &error_base);
if(display_supports_dpms_extension)
{
LOG->Trace("DPMSQueryExtension returned true. Stepmania will disable power management, and restore the original state on exit.");
CARD16 power_level;
BOOL state;
if(DPMSInfo(Dpy, &power_level, &state))
{
dpms_state_at_startup= state;
DPMSDisable(Dpy);
}
else
{
LOG->Trace("DPMSInfo returned false. Stepmania will not be able to disable power management.");
}
}
else
{
LOG->Trace("DPMSQueryExtension returned false, which means this display does not support the DPMS extension. Stepmania will not be able to disable power management.");
}
return true;
}
guint
gsd_power_enable_screensaver_watchdog (void)
{
int dummy;
guint id;
/* Make sure that Xorg's DPMS extension never gets in our
* way. The defaults are now applied in Fedora 20 from
* being "0" by default to being "600" by default */
gdk_x11_display_error_trap_push (gdk_display_get_default ());
if (DPMSQueryExtension(GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), &dummy, &dummy))
DPMSSetTimeouts (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), 0, 0, 0);
gdk_x11_display_error_trap_pop_ignored (gdk_display_get_default ());
id = g_timeout_add_seconds (XSCREENSAVER_WATCHDOG_TIMEOUT,
disable_builtin_screensaver,
NULL);
g_source_set_name_by_id (id, "[gnome-settings-daemon] disable_builtin_screensaver");
return id;
}
/*!
* This function works around an XServer idleTime bug in the
* XScreenSaverExtension if dpms is running. In this case the current
* dpms-state time is always subtracted from the current idletime.
* This means: XScreenSaverInfo->idle is not the time since the last
* user activity, as descriped in the header file of the extension.
* This result in SUSE bug # and sf.net bug #. The bug in the XServer itself
* is reported at https://bugs.freedesktop.org/buglist.cgi?quicksearch=6439.
*
* Workaround: Check if if XServer is in a dpms state, check the
* current timeout for this state and add this value to
* the current idle time and return.
*
* \param _idleTime an unsigned long value with the current idletime from
* XScreenSaverInfo->idle
* \return an unsigned long with the corrected idletime
*/
static unsigned long workaroundX11(Display *dpy, unsigned long _idle) {
int dummy;
CARD16 standby, suspend, off;
CARD16 state;
BOOL onoff;
if(DPMSQueryExtension(dpy, &dummy, &dummy)) {
if(DPMSCapable(dpy)) {
DPMSGetTimeouts(dpy, &standby, &suspend, &off);
DPMSInfo(dpy, &state, &onoff);
if(onoff) {
switch(state) {
case DPMSModeStandby:
// this check is a little bit paranoid, but just to be sure
if(_idle < (unsigned) (standby * 1000)) {
_idle += (standby * 1000);
}
break;
case DPMSModeSuspend:
if(_idle < (unsigned) ((suspend + standby) * 1000)) {
_idle += ((suspend + standby) * 1000);
}
break;
case DPMSModeOff:
if(_idle < (unsigned) ((off + suspend + standby) * 1000)) {
_idle += ((off + suspend + standby) * 1000);
}
break;
case DPMSModeOn:
break;
default:
break;
}
}
}
}
return _idle;
}
void DPMSSupport::PlatformSpecificInit()
{
Display* dpy = g_Windowing.GetDisplay();
if (dpy == NULL) return;
int event_base, error_base; // we ignore these
if (!DPMSQueryExtension(dpy, &event_base, &error_base)) {
CLog::Log(LOGINFO, "DPMS: X11 extension not present, power-saving"
" will not be available");
return;
}
if (!DPMSCapable(dpy)) {
CLog::Log(LOGINFO, "DPMS: display does not support power-saving");
return;
}
m_supportedModes.push_back(SUSPEND); // best compromise
m_supportedModes.push_back(OFF); // next best
m_supportedModes.push_back(STANDBY); // rather lame, < 80% power according to
// DPMS spec
}
ScreenSaverX11Private(ScreenSaverX11 *outer) : m_dpmsenabled(FALSE),
m_dpmsdeactivated(false), m_timeoutInterval(-1), m_resetTimer(0)
{
m_xscreensaverRunning =
myth_system("xscreensaver-command -version >&- 2>&-") == 0;
m_gscreensaverRunning =
myth_system("gnome-screensaver-command --help >&- 2>&-") == 0;
if (IsScreenSaverRunning())
{
m_resetTimer = new QTimer(outer);
QObject::connect(m_resetTimer, SIGNAL(timeout()),
outer, SLOT(resetSlot()));
VERBOSE(VB_GENERAL, "XScreenSaver support enabled");
}
int dummy;
if ((m_dpmsaware = DPMSQueryExtension(qt_xdisplay(), &dummy, &dummy)))
{
CARD16 power_level;
/* If someone runs into X server weirdness that goes away when
* they externally disable DPMS, then the 'dpmsenabled' test should
* be short circuited by a call to 'DPMSCapable()'. Be sure to
* manually initialize dpmsenabled to false.
*/
DPMSInfo(qt_xdisplay(), &power_level, &m_dpmsenabled);
if (m_dpmsenabled)
VERBOSE(VB_GENERAL, "DPMS is active.");
else
VERBOSE(VB_GENERAL, "DPMS is disabled.");
}
else
{
VERBOSE(VB_GENERAL, "DPMS is not supported.");
}
}
/*!
* This function works around an XServer idleTime bug in the
* XScreenSaverExtension if dpms is running. In this case the current
* dpms-state time is always subtracted from the current idletime.
* This means: XScreenSaverInfo->idle is not the time since the last
* user activity, as descriped in the header file of the extension.
* This result in SUSE bug # and sf.net bug #. The bug in the XServer itself
* is reported at https://bugs.freedesktop.org/buglist.cgi?quicksearch=6439.
*
* Workaround: Check if if XServer is in a dpms state, check the
* current timeout for this state and add this value to
* the current idle time and return.
*
* \param _idleTime a unsigned long value with the current idletime from
* XScreenSaverInfo->idle
* \return a unsigned long with the corrected idletime
*/
unsigned long workaroundCreepyXServer(Display *dpy, unsigned long _idleTime ){
int dummy;
CARD16 standby, suspend, off;
CARD16 state;
BOOL onoff;
if (DPMSQueryExtension(dpy, &dummy, &dummy)) {
if (DPMSCapable(dpy)) {
DPMSGetTimeouts(dpy, &standby, &suspend, &off);
DPMSInfo(dpy, &state, &onoff);
if (onoff) {
switch (state) {
case DPMSModeStandby:
/* this check is a littlebit paranoid, but be sure */
if (_idleTime < (unsigned) (standby * 1000))
_idleTime += (standby * 1000);
break;
case DPMSModeSuspend:
if (_idleTime < (unsigned) ((suspend + standby) * 1000))
_idleTime += ((suspend + standby) * 1000);
break;
case DPMSModeOff:
if (_idleTime < (unsigned) ((off + suspend + standby) * 1000))
_idleTime += ((off + suspend + standby) * 1000);
break;
case DPMSModeOn:
default:
break;
}
}
}
}
XCloseDisplay(dpy);
return _idleTime;
}
CXWindowsScreenSaver::CXWindowsScreenSaver(
Display* display, Window window, void* eventTarget, IEventQueue* events) :
m_display(display),
m_xscreensaverSink(window),
m_eventTarget(eventTarget),
m_xscreensaver(None),
m_xscreensaverActive(false),
m_dpms(false),
m_disabled(false),
m_suppressDisable(false),
m_disableTimer(NULL),
m_disablePos(0),
m_events(events)
{
// get atoms
m_atomScreenSaver = XInternAtom(m_display,
"SCREENSAVER", False);
m_atomScreenSaverVersion = XInternAtom(m_display,
"_SCREENSAVER_VERSION", False);
m_atomScreenSaverActivate = XInternAtom(m_display,
"ACTIVATE", False);
m_atomScreenSaverDeactivate = XInternAtom(m_display,
"DEACTIVATE", False);
// check for DPMS extension. this is an alternative screen saver
// that powers down the display.
#if HAVE_X11_EXTENSIONS_DPMS_H
int eventBase, errorBase;
if (DPMSQueryExtension(m_display, &eventBase, &errorBase)) {
if (DPMSCapable(m_display)) {
// we have DPMS
m_dpms = true;
}
}
#endif
// watch top-level windows for changes
bool error = false;
{
CXWindowsUtil::CErrorLock lock(m_display, &error);
Window root = DefaultRootWindow(m_display);
XWindowAttributes attr;
XGetWindowAttributes(m_display, root, &attr);
m_rootEventMask = attr.your_event_mask;
XSelectInput(m_display, root, m_rootEventMask | SubstructureNotifyMask);
}
if (error) {
LOG((CLOG_DEBUG "didn't set root event mask"));
m_rootEventMask = 0;
}
// get the built-in settings
XGetScreenSaver(m_display, &m_timeout, &m_interval,
&m_preferBlanking, &m_allowExposures);
// get the DPMS settings
m_dpmsEnabled = isDPMSEnabled();
// get the xscreensaver window, if any
if (!findXScreenSaver()) {
setXScreenSaver(None);
}
// install disable timer event handler
m_events->adoptHandler(CEvent::kTimer, this,
new TMethodEventJob<CXWindowsScreenSaver>(this,
&CXWindowsScreenSaver::handleDisableTimer));
}
int main(int argc, char **argv) {
Display *dpy;
int g15screen_fd;
int event;
int error;
BOOL enabled = True;
CARD16 power = 0;
int dummy = 0, lights = True, change = 0;
int i;
struct sigaction new_action;
char * enable_cmd = NULL;
char * disable_cmd = NULL;
int dpms_timeout = 0;
for (i=0;i<argc;i++) {
char argument[20];
memset(argument,0,20);
strncpy(argument,argv[i],19);
if (!strncmp(argument, "-a",2) || !strncmp(argument, "--activate",10)) {
if(argv[i+1]!=NULL){
sscanf(argv[i+1],"%i",&dpms_timeout);
i++;
}else{
printf("%s --activate requires an argument <minutes to activation>\n",argv[0]);
exit(1);
}
}
if (!strncmp(argument, "-e",2) || !strncmp(argument, "--cmd-enable",12)) {
if(argv[i+1]!=NULL){
enable_cmd = malloc(strlen(argv[i+1])+1);
memcpy(enable_cmd, argv[i+1], strlen(argv[i+1]));
i++;
}
}
if (!strncmp(argument, "-d",2) || !strncmp(argument, "--cmd-disable",13)) {
if(argv[i+1]!=NULL){
disable_cmd = malloc(strlen(argv[i+1])+1);
memcpy(disable_cmd, argv[i+1], strlen(argv[i+1]));
i++;
}
}
if (!strncmp(argument, "-v",2) || !strncmp(argument, "--version",9)) {
printf("%s version %s\n",argv[0],VERSION);
exit(0);
}
if (!strncmp(argument, "-b",2) || !strncmp(argument, "--bright",13)) {
bright=1;
}
if (!strncmp(argument, "-h",2) || !strncmp(argument, "--help",6)) {
printf(" %s version %s\n (c)2007 Mike Lampard\n\n",argv[0],VERSION);
printf(" -a or --activate <minutes> - cause DPMS to be activated in <minutes> if no activity.\n");
printf(" By default, %s will simply monitor DPMS status, and\n",argv[0]);
printf(" requires a screensaver to activate. \n");
printf(" In this mode, no screensver is needed.\n");
printf(" %s will shut the monitor down on its own after <minutes>\n",argv[0]);
printf(" with no keyboard or mouse activity.\n");
printf(" -e or --cmd-enable <cmd to run> - Run program <cmd> when DPMS is activated.\n\n");
printf(" -d or --cmd-disable <cmd to run> - Run program <cmd> when DPMS is de-activated.\n\n");
printf(" -b or --bright - When the keyboard is woken up, set the LEDs to bright.\n\n");
printf(" -v or --version - Show program version\n\n");
printf(" -h or --help - This page\n\n");
exit(0);
}
}
dpy = XOpenDisplay(getenv("DISPLAY"));
if (!dpy) {
printf("Unable to open display %s - exiting\n",getenv("DISPLAY"));
return 1;
}
do {
if((g15screen_fd = new_g15_screen(G15_G15RBUF))<0){
printf("Sorry, cant connect to the G15daemon - retrying\n");
sleep(2);
}
}while(g15screen_fd<0);
if (!DPMSQueryExtension (dpy, &event, &error)) {
printf ("XDPMS extension not supported.\n");
return 1;
}
if (!DPMSCapable(dpy)) {
printf("DPMS is not enabled... exiting\n");
return 1;
}
if (dpms_timeout>0) {
DPMSEnable(dpy);
DPMSSetTimeouts(dpy,dpms_timeout*60,dpms_timeout*60,0);
}
new_action.sa_handler = sighandler;
new_action.sa_flags = 0;
sigaction(SIGINT, &new_action, NULL);
sigaction(SIGQUIT, &new_action, NULL);
while(!leaving) {
int fg_check = g15_send_cmd (g15screen_fd, G15DAEMON_IS_FOREGROUND, dummy);
if (! DPMSInfo (dpy, &power, &enabled)) {
printf ("unable to get DPMS state.\n");
return 1;
}
switch(power) {
case DPMSModeOn: {
if (lights == False) {
change = 1;
fork_child(enable_cmd);
}
lights = True;
break;
}
case DPMSModeStandby:
case DPMSModeSuspend:
case DPMSModeOff: {
if(lights == True){
change = 1;
fork_child(disable_cmd);
}
lights = False;
break;
}
}
if (fg_check==1 && lights == True && change == 0) { // foreground
g15_send_cmd (g15screen_fd, G15DAEMON_SWITCH_PRIORITIES, dummy);
}
if(change) {
toggle_g15lights(g15screen_fd,lights,fg_check);
change=0;
}
sleep (1);
}
close(g15screen_fd);
if(enable_cmd!=NULL)
free(enable_cmd);
if(disable_cmd!=NULL)
free(disable_cmd);
XCloseDisplay(dpy);
return 0;
}
uint32_t
get_idle_milliseconds(Display *d)
{
XScreenSaverInfo *ssi;
int evbase, errbase;
if (!XScreenSaverQueryExtension(d, &evbase, &errbase))
{
fprintf(stderr, "screen saver extension not supported\n");
return 1;
}
ssi = XScreenSaverAllocInfo();
if (ssi == NULL)
{
fprintf(stderr, "couldn't allocate screen saver info\n");
return 1;
}
if (!XScreenSaverQueryInfo(d, DefaultRootWindow(d), ssi))
{
fprintf(stderr, "couldn't query screen saver info\n");
return 1;
}
uint32_t idle = (uint32_t) ssi->idle;
XFree(ssi);
// ugh. ssi->idle is wrong if DPMS is enabled, we have
// to compensate.
if (DPMSQueryExtension(d, &evbase, &errbase))
{
if (DPMSCapable(d))
{
CARD16 standby, suspend, off, state;
BOOL onoff;
DPMSGetTimeouts(d, &standby, &suspend, &off);
DPMSInfo(d, &state, &onoff);
if (onoff)
{
uint32_t offset = 0;
switch (state)
{
case DPMSModeStandby:
offset = (uint32_t) (standby * 1000);
break;
case DPMSModeSuspend:
offset = (uint32_t) ((suspend + standby) * 1000);
break;
case DPMSModeOff:
offset = (uint32_t) ((off + suspend + standby) * 1000);
break;
default:
/*nothing*/;
}
if (offset != 0 && idle < offset)
idle += offset;
}
}
}
return idle;
}
ScreenSaverX11Private(ScreenSaverX11 *outer) :
m_dpmsaware(false), m_dpmsdeactivated(false),
m_xscreensaverRunning(false), m_gscreensaverRunning(false),
m_dpmsenabled(false),
m_timeoutInterval(-1), m_resetTimer(NULL),
m_display(NULL)
{
const uint flags = kMSDontBlockInputDevs | kMSDontDisableDrawing |
kMSProcessEvents;
m_xscreensaverRunning =
myth_system("xscreensaver-command -version >&- 2>&-",
flags) == 0;
m_gscreensaverRunning =
myth_system("gnome-screensaver-command --help >&- 2>&-",
flags) == 0;
if (IsScreenSaverRunning())
{
m_resetTimer = new QTimer(outer);
m_resetTimer->setSingleShot(false);
QObject::connect(m_resetTimer, SIGNAL(timeout()),
outer, SLOT(resetSlot()));
if (m_xscreensaverRunning)
LOG(VB_GENERAL, LOG_INFO, LOC + "XScreenSaver support enabled");
if (m_gscreensaverRunning)
LOG(VB_GENERAL, LOG_INFO, LOC +
"Gnome screen saver support enabled");
}
m_display = OpenMythXDisplay();
if (m_display)
{
int dummy0, dummy1;
m_dpmsaware = DPMSQueryExtension(m_display->GetDisplay(),
&dummy0, &dummy1);
}
else
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Failed to open connection to X11 server");
}
if (m_dpmsaware)
{
CARD16 power_level;
/* If someone runs into X server weirdness that goes away when
* they externally disable DPMS, then the 'dpmsenabled' test should
* be short circuited by a call to 'DPMSCapable()'. Be sure to
* manually initialize dpmsenabled to false.
*/
DPMSInfo(m_display->GetDisplay(), &power_level, &m_dpmsenabled);
if (m_dpmsenabled)
LOG(VB_GENERAL, LOG_INFO, LOC + "DPMS is active.");
else
LOG(VB_GENERAL, LOG_INFO, LOC + "DPMS is disabled.");
}
else
{
LOG(VB_GENERAL, LOG_INFO, LOC + "DPMS is not supported.");
}
}
int main(int argc, char** argv) {
int verbose = 0, bg = 0;
int i, ev, er;
char *lock_cmd = "xlock";
char *flag_file = NULL;
char estr[100], cmd[500];
struct stat sbuf;
CARD16 power;
CARD16 desired = DPMSModeOff;
BOOL state;
/* setup the lock command. it may be reset by -lock below. */
if (getenv("XLOCK_CMD")) {
lock_cmd = (char *) getenv("XLOCK_CMD");
}
/* process cmd line: */
for (i=1; i<argc; i++) {
if (!strcmp(argv[i], "-display")) {
sprintf(estr, "DISPLAY=%s", argv[++i]);
putenv(strdup(estr));
} else if (!strcmp(argv[i], "-auth")) {
sprintf(estr, "XAUTHORITY=%s", argv[++i]);
putenv(strdup(estr));
} else if (!strcmp(argv[i], "-lock")) {
lock_cmd = argv[++i];
} else if (!strcmp(argv[i], "-f")) {
flag_file = argv[++i];
unlink(flag_file);
} else if (!strcmp(argv[i], "-grab")) {
grab = 1;
} else if (!strcmp(argv[i], "-bg")) {
bg = 1;
} else if (!strcmp(argv[i], "-v")) {
verbose = 1;
} else if (!strcmp(argv[i], "-standby")) {
desired = DPMSModeStandby;
} else if (!strcmp(argv[i], "-suspend")) {
desired = DPMSModeSuspend;
} else if (!strcmp(argv[i], "-off")) {
desired = DPMSModeOff;
}
}
/* we want it to go into background to avoid blocking, so add '&'. */
strcpy(cmd, lock_cmd);
strcat(cmd, " &");
lock_cmd = cmd;
/* close any file descriptors we may have inherited (e.g. port 5900) */
for (i=3; i<=100; i++) {
close(i);
}
/* open DISPLAY */
dpy = XOpenDisplay(NULL);
if (! dpy) {
fprintf(stderr, "XOpenDisplay failed.\n");
exit(1);
}
/* check for DPMS extension */
if (! DPMSQueryExtension(dpy, &ev, &er)) {
fprintf(stderr, "DPMSQueryExtension failed.\n");
exit(1);
}
if (! DPMSCapable(dpy)) {
fprintf(stderr, "DPMSCapable failed.\n");
exit(1);
}
/* make sure DPMS is enabled */
if (! DPMSEnable(dpy)) {
fprintf(stderr, "DPMSEnable failed.\n");
exit(1);
}
/* retrieve the timeouts for later resetting */
if (! DPMSGetTimeouts(dpy, &standby, &suspend, &off)) {
fprintf(stderr, "DPMSGetTimeouts failed.\n");
exit(1);
}
if (! standby || ! suspend || ! off) {
/* if none, set to some reasonable values */
standby = 900;
suspend = 1200;
off = 1800;
}
if (verbose) {
fprintf(stderr, "DPMS timeouts: %d %d %d\n", standby,
suspend, off);
}
/* now set them to very small values */
if (desired == DPMSModeOff) {
if (! DPMSSetTimeouts(dpy, 1, 1, 1)) {
fprintf(stderr, "DPMSSetTimeouts failed.\n");
exit(1);
}
} else if (desired == DPMSModeSuspend) {
if (! DPMSSetTimeouts(dpy, 1, 1, 0)) {
fprintf(stderr, "DPMSSetTimeouts failed.\n");
exit(1);
}
} else if (desired == DPMSModeStandby) {
if (! DPMSSetTimeouts(dpy, 1, 0, 0)) {
fprintf(stderr, "DPMSSetTimeouts failed.\n");
exit(1);
}
}
XFlush(dpy);
/* set handlers for clean up in case we terminate via signal */
signal(SIGHUP, reset);
signal(SIGINT, reset);
signal(SIGQUIT, reset);
signal(SIGABRT, reset);
signal(SIGTERM, reset);
/* force state into DPMS Off (lowest power) mode */
if (! DPMSForceLevel(dpy, desired)) {
fprintf(stderr, "DPMSForceLevel failed.\n");
exit(1);
}
XFlush(dpy);
/* read state */
msleep(500);
if (! DPMSInfo(dpy, &power, &state)) {
fprintf(stderr, "DPMSInfo failed.\n");
exit(1);
}
fprintf(stderr, "power: %d state: %d\n", power, state);
/* grab display if desired. NOT WORKING */
if (grab) {
if (verbose) {
fprintf(stderr, "calling XGrabServer()\n");
}
XGrabServer(dpy);
}
/* go into background if desired. */
if (bg) {
pid_t p;
if ((p = fork()) != 0) {
if (p < 0) {
fprintf(stderr, "problem forking.\n");
exit(1);
} else {
/* XXX no fd closing */
exit(0);
}
}
}
/* main loop: */
while (1) {
/* reassert DPMSModeOff (desired) */
if (verbose) fprintf(stderr, "reasserting desired DPMSMode\n");
DPMSForceLevel(dpy, desired);
XFlush(dpy);
/* wait a bit */
msleep(200);
/* check for flag file appearence */
if (flag_file && stat(flag_file, &sbuf) == 0) {
if (verbose) {
fprintf(stderr, "flag found: %s\n", flag_file);
}
unlink(flag_file);
reset(0);
exit(0);
}
/* check state and power level */
if (! DPMSInfo(dpy, &power, &state)) {
fprintf(stderr, "DPMSInfo failed.\n");
reset(0);
exit(1);
}
if (verbose) {
fprintf(stderr, "power: %d state: %d\n", power, state);
}
if (!state || power != desired) {
/* Someone (or maybe a cat) is evidently watching... */
fprintf(stderr, "DPMS CHANGE: power: %d state: %d\n",
power, state);
break;
}
}
reset(0);
fprintf(stderr, "locking screen with command: \"%s\"\n", lock_cmd);
system(lock_cmd);
exit(0);
}