Added KDE3 version of kpowersave

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kpowersave@1092957 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 368 insertions, 0 deletions

diff --git a/src/inactivity.cpp b/src/inactivity.cpp
new file mode 100644
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+++ b/src/inactivity.cpp
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+/***************************************************************************
+ *   Copyright (C) 2006-2007 by Danny Kukawka                              *
+ *                           <dkukawka@suse.de>, <danny.kukawka@web.de>    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of version 2 of the GNU General Public License     *
+ *   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, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
+ ***************************************************************************/
+
+/*! \file 	inactivity.cpp
+ * \brief 	In this file can be found the inactivity related code. 
+ * \author 	Danny Kukawka, <dkukawka@suse.de>, <danny.kukawka@web.de>
+ * \date    	2006-2007
+ */
+
+// own header
+#include "inactivity.h"
+
+/* needed for lXext C library linkage */
+extern "C" {
+	#include <X11/Xproto.h>
+	#include <X11/extensions/dpms.h>
+	#include <X11/extensions/scrnsaver.h>
+}
+ 
+// KDE Headers
+#include <klocale.h>
+
+/*! The default constructor of the class autosuspend */
+inactivity::inactivity() {
+	kdDebugFuncIn(trace);
+
+	proc = NULL;
+
+	timeToInactivity = 0;
+	blacklisted_running_last = 0;
+	
+	pidof_call_failed = false;
+	pidof_call_started = false;
+	pidof_call_returned = false;
+	blacklisted_running = false;
+	
+	int dummy = 0;
+	has_XSC_Extension = XScreenSaverQueryExtension( qt_xdisplay(), &dummy, &dummy );
+	
+	checkInactivity =  new QTimer( this );
+	connect( checkInactivity, SIGNAL(timeout()), this, SLOT(check()));
+
+	kdDebugFuncOut(trace);
+}
+
+/*! The default destructor of the class autosuspend */
+inactivity::~inactivity() {
+	kdDebugFuncIn(trace);
+
+	delete proc;
+	proc = NULL;
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This function start the monitoring of inactivity of user on the X-Server.
+ * Here wee set the time for the signal \ref inactivityTimeExpired() and start
+ * the needed QTimer.
+ * \param timeToExpire  Integer value representing the time of inactivity which need 
+ *			to elapse befor send signal. The time is in seconds.
+ * \param blacked	QStringList with blacklisted programs which if detected with 
+ *			pidof() as running prevent the autosuspend.
+ */
+void inactivity::start( int timeToExpire, QStringList blacked ) {
+	kdDebugFuncIn(trace);
+
+	blacklist = blacked;
+ 
+	if(timeToExpire > 0 && has_XSC_Extension){
+		stop();
+		timeToInactivity = (unsigned long) (timeToExpire * 1000);
+		checkInactivity->start(CHECK_for_INACTIVITY, true);
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * \b SLOT to call check as recheck inactivity if befor a running PID 
+ * request was detected.
+ */
+void inactivity::recheck() {
+	kdDebugFuncIn(trace);
+
+	check(true);
+	
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * \b SLOT to call check without a recheck.
+ */
+void inactivity::check() {
+	check(false);
+}
+
+/*!
+ * \b SLOT to check the current idle-time of the X-Server and if there
+ * are blacklisted programs are running. If the through \ref timeToInactivity 
+ * defined time is expired, this function emit signal \ref inactivityTimeExpired() .
+ * \param recheck   boolean which define if this is a recheck or not. 
+ *                  \li true, if this is a recheck. In this case we didn't call
+ *                      \ref checkBlacklisted() again
+ *                  \li false, if this is normal check
+ */
+void inactivity::check( bool recheck ) {
+	kdDebugFuncIn(trace);
+
+	if (timeToInactivity > 0) {	
+		checkXInactivity();
+		if (!pidof_call_started && !recheck) checkBlacklisted();
+		
+		if( idleTime < blacklisted_running_last ) {
+			blacklisted_running_last = idleTime;
+		}
+	
+		if((idleTime - blacklisted_running_last ) >= timeToInactivity) {
+			if (!pidof_call_started) {
+				if (( pidof_call_returned && !blacklisted_running ) ||
+				( pidof_call_returned && pidof_call_failed )) {
+					emit inactivityTimeExpired();
+				}
+				else {
+					checkInactivity->start(CHECK_for_INACTIVITY, true);
+				}
+			}
+			else {
+				//called if there is a getPIDs() is running
+				QTimer::singleShot(500, this, SLOT(recheck()));
+			}
+		}
+		else checkInactivity->start(CHECK_for_INACTIVITY, true);
+	} else {
+		kdWarning() <<  "timeToInactivity <= 0, stoped autosuspend checks!" << endl;
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This function stop the monitoring and reset all variables and Timer.
+ */
+void inactivity::stop() {
+	kdDebugFuncIn(trace);
+
+	if (checkInactivity->isActive()) checkInactivity->stop();
+	timeToInactivity = 0;
+	idleTime = 0;
+	blacklisted_running_last = 0;
+	
+	pidof_call_failed = false;
+	pidof_call_started = false;
+	pidof_call_returned = false;
+	blacklisted_running = false;
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This function query the idle-time of user-imput from the X-Server and set
+ * the return value to \ref idleTime.
+ */
+void inactivity::checkXInactivity(){
+	kdDebugFuncIn(trace);
+
+	idleTime = getXInactivity();
+	kdDebug() << "autosuspend::checkXInactivity - idleTime: " << idleTime << endl;
+
+	kdDebugFuncOut(trace);
+}
+
+/*!
+ * This function query the idle-time of user-imput from the X-Server and
+ * return the current idle-time. 
+ */
+unsigned long inactivity::getXInactivity(){
+	kdDebugFuncIn(trace);
+
+	if(has_XSC_Extension) {
+		static XScreenSaverInfo* mitInfo = 0;
+		if (!mitInfo) mitInfo = XScreenSaverAllocInfo ();
+		XScreenSaverQueryInfo (qt_xdisplay(), DefaultRootWindow (qt_xdisplay()), mitInfo);
+		kdDebugFuncOut(trace);
+		return workaroundCreepyXServer(mitInfo->idle);
+	}
+	else {
+		kdDebugFuncOut(trace);
+		return 0;
+	}
+	
+}
+
+/*!
+ * This function workaround a fucking XServer idleTime bug in the 
+ * XScreenSaverExtension, if dpms is running. In this case always the
+ * current dpms-state time is extracted from the current idletime.
+ * This mean: 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 #
+ *
+ * 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 ideletime fromm
+ *                  XScreenSaverInfo->idle
+ * \return a unsigned long with the corrected idletime
+ */
+unsigned long inactivity::workaroundCreepyXServer( unsigned long _idleTime ){
+	kdDebugFuncOut(trace);
+
+	int dummy;
+	CARD16 standby, suspend, off;
+	CARD16 state;
+	BOOL onoff;
+
+	Display *dpy = qt_xdisplay();
+
+	kdDebug() << "Current idleTime: " << _idleTime << endl;
+
+	if (DPMSQueryExtension(dpy, &dummy, &dummy)) {
+		if (DPMSCapable(dpy)) {
+			DPMSGetTimeouts(dpy, &standby, &suspend, &off);
+			DPMSInfo(dpy, &state, &onoff);
+
+			if (onoff) {
+				switch (state) {
+					case DPMSModeStandby:
+						kdDebug() << "DPMS enabled. Monitor in Standby. Standby: "
+							  << standby << " sec" << endl;
+						// this check is a littlebit paranoid, but be sure
+						if (_idleTime < (unsigned) (standby * 1000))
+							_idleTime += (standby * 1000);
+						break;
+					case DPMSModeSuspend:
+						kdDebug() << "DPMS enabled. Monitor in Suspend. Suspend: "
+							  << suspend << " sec" << endl;
+						if (_idleTime < (unsigned) ((suspend + standby) * 1000))
+							_idleTime += ((suspend + standby) * 1000);
+						break;
+					case DPMSModeOff:
+						kdDebug() << "DPMS enabled. Monitor is Off. Off: "
+							  << off << " sec" << endl;
+						if (_idleTime < (unsigned) ((off + suspend + standby) * 1000))
+							_idleTime += ((off + suspend + standby) * 1000);
+						break;
+					case DPMSModeOn:
+					default:
+						break;
+				}
+			}
+		} 
+	}
+
+	kdDebug() << "Corrected idleTime: " << _idleTime << endl;
+	kdDebugFuncOut(trace);
+	return _idleTime;
+}
+
+/*!
+ * This funtion starts the monitoring of blacklisted processes.
+ */
+void inactivity::checkBlacklisted(){
+	kdDebugFuncIn(trace);
+
+	if (proc != NULL) {
+		delete proc;
+		proc = NULL;
+	}
+
+	proc = new KProcess;
+	*proc << "pidof" << blacklist;
+
+	connect( proc, SIGNAL(receivedStdout(KProcess *, char *, int)),this,
+		 SLOT(getPIDs(KProcess *, char *, int)));
+	connect( proc, SIGNAL(processExited(KProcess *)),
+		 SLOT(getPIDsExited(KProcess *)));
+	
+	if (!proc->start(KProcess::NotifyOnExit, KProcess::AllOutput))
+	{
+		emit displayErrorMsg(i18n("Could not start 'pidof'. "
+					  "Could not autosuspend the machine.\n"
+					  "Please check your installation."));
+	}
+
+	pidof_call_started = true;
+	pidof_call_returned = false;
+	pidof_call_failed = false;
+
+	kdDebugFuncOut(trace);
+}
+
+
+/*!
+ * \b SLOT to get the return of the command pidof and parse this to set
+ * \ref blacklisted_running .
+ * \param *proc     pointer to the sending KProcess
+ * \param *buffer   the char pointer to the output of the process to stdout
+ * \param *lenght   the length of the buffer
+ */
+void inactivity::getPIDs(KProcess */*proc*/, char *buffer, int /*lenght*/) {
+	kdDebugFuncIn(trace);
+
+	QString pids(buffer);
+	pids.remove(" ");
+	if(pids.isEmpty() || pids == "\n" ) {
+		kdDebug() << "NO! BLACKLISTED IS RUNNING" << endl;
+		blacklisted_running = false;
+	} 
+	else {
+		if (pids.contains(QRegExp::QRegExp("[0-9]"))) {
+			kdDebug() << "BLACKLISTED IS RUNNING" << endl;
+			blacklisted_running = true;
+			blacklisted_running_last = idleTime;
+		}
+		else {
+			kdError() << "GET BLACKLISTED FAILED - WRONG RETURN" << endl;
+			blacklisted_running = false;
+			pidof_call_failed = true;
+		}
+	}
+
+	kdDebugFuncOut(trace);
+}
+
+
+/*!
+ * \b SLOT which called if the call of pidof is exited
+ * \param proc the KPocess which called this SLOT
+ */
+void inactivity::getPIDsExited(KProcess *proc){
+	kdDebugFuncIn(trace);
+
+	pidof_call_returned = true;
+	pidof_call_started = false;
+	
+	
+	if (proc->normalExit()){
+		// if returned some pids or if pid returned nothing
+		if (proc->exitStatus() == 1 || proc->exitStatus() == 0){
+			pidof_call_failed = false;
+			kdDebugFuncOut(trace);
+			return;
+		}
+	}	
+	// if something crashed/failed
+	pidof_call_failed = true;
+	kdDebugFuncOut(trace);
+}
+
+#include "inactivity.moc"