Fixed up timer for autosuspend and autodimm when a screensaver is also in use. This resolves bug 2603.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit d67bc99f08)

src/autodimm.cpp

@@ -27,7 +27,7 @@
 #include "autodimm.h"
 
 /*! The default constructor of the class autodimm */
-autodimm::autodimm() : inactivity() {
+autodimm::autodimm(screen *disp) : inactivity(disp) {
 	kdDebugFuncIn(trace);
 
 	lastIdleTime = 0;

src/autodimm.h

@@ -42,7 +42,7 @@ class autodimm : public inactivity
 
 public:
 	//! default constructor
-	autodimm();
+	autodimm(screen *disp);
 	//! default destructor
 	~autodimm();
 

src/autosuspend.cpp

@@ -26,7 +26,7 @@
 #include "autosuspend.h"
 
 /*! The default constructor of the class autosuspend */
-autosuspend::autosuspend() : inactivity () {
+autosuspend::autosuspend(screen *disp) : inactivity (disp) {
 	kdDebugFuncIn(trace);
 
 }

src/autosuspend.h

@@ -41,7 +41,7 @@ class autosuspend : public inactivity
 	
 public:
 	//! default constructor
-	autosuspend();
+	autosuspend(screen *disp);
 	//! default destructor
 	~autosuspend();
 };

src/inactivity.cpp

@@ -37,7 +37,8 @@ extern "C" {
 #include <tdelocale.h>
 
 /*! The default constructor of the class autosuspend */
-inactivity::inactivity() {
+inactivity::inactivity(screen *disp) : display(disp),
+  prev_screensaver_enabled(false), prev_idle_time(0), correction_value(0) {
 	kdDebugFuncIn(trace);
 
 	proc = NULL;
@@ -71,7 +72,7 @@ inactivity::~inactivity() {
 
 /*!
  * 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
+ * Here we set the time for the signal \ref inactivityTimeExpired() and start
  * the needed TQTimer.
  * \param timeToExpire  Integer value representing the time of inactivity which need
  *			to elapse befor send signal. The time is in seconds.
@@ -86,6 +87,9 @@ void inactivity::start( int timeToExpire, TQStringList blacked ) {
 	if(timeToExpire > 0 && has_XSC_Extension){
 		stop();
 		timeToInactivity = (unsigned long) (timeToExpire * 1000);
+		prev_screensaver_enabled = false;
+		prev_idle_time = 0;
+		correction_value = 0;
 		checkInactivity->start(CHECK_for_INACTIVITY, true);
 	}
 
@@ -198,7 +202,7 @@ unsigned long inactivity::getXInactivity(){
 		if (!mitInfo) mitInfo = XScreenSaverAllocInfo ();
 		XScreenSaverQueryInfo (tqt_xdisplay(), DefaultRootWindow (tqt_xdisplay()), mitInfo);
 		kdDebugFuncOut(trace);
-		return workaroundCreepyXServer(mitInfo->idle);
+		return workaroundCreepyXServer(mitInfo);
 	}
 	else {
 		kdDebugFuncOut(trace);
@@ -219,12 +223,36 @@ unsigned long inactivity::getXInactivity(){
  *             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
+ * \param _mitInfo a pointer to a structure containing the current XScreenSaver state
  * \return a unsigned long with the corrected idletime
  */
-unsigned long inactivity::workaroundCreepyXServer( unsigned long _idleTime ){
+unsigned long inactivity::workaroundCreepyXServer(XScreenSaverInfo *_mitInfo){
 	kdDebugFuncOut(trace);
+	unsigned long _idleTime = _mitInfo->idle;
+
+	// Detect whether the screensaver has become active since the last time,
+	// because the idle time returned by XScreenSaverQueryInfo() is resetted
+	// to 0 when the screensaver kicks in. Correct the idle time value if the
+	// screensaver is active
+	bool screensaver_enabled = false;
+	if (display->checkScreenSaverActive())
+	{
+	  screensaver_enabled = true;
+	}
+	if (!prev_screensaver_enabled && screensaver_enabled)
+	{
+		correction_value = prev_idle_time + CHECK_for_INACTIVITY - _idleTime;
+	}
+	prev_idle_time = _idleTime;
+	if (screensaver_enabled)
+	{
+	  _idleTime += correction_value;
+	}
+	else
+	{
+		correction_value = 0;
+	}
+	prev_screensaver_enabled = screensaver_enabled;
 
 	int dummy;
 	CARD16 standby, suspend, off;
@@ -235,6 +263,8 @@ unsigned long inactivity::workaroundCreepyXServer( unsigned long _idleTime ){
 
 	kdDebug() << "Current idleTime: " << _idleTime << endl;
 
+	// Idle time is reset when the screensaver kicks in. Need to correct with the right offset
+
 	if (DPMSQueryExtension(dpy, &dummy, &dummy)) {
 		if (DPMSCapable(dpy)) {
 			DPMSGetTimeouts(dpy, &standby, &suspend, &off);

src/inactivity.h

@@ -42,8 +42,14 @@
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
+/* needed for lXext C library linkage */
+extern "C" {
+	#include <X11/extensions/scrnsaver.h>
+}
+
 // from project
 #include "tdepowersave_debug.h"
+#include "screen.h"
 
 /*! 
 *  \file 	inactivity.h
@@ -63,7 +69,7 @@ class inactivity : public TQWidget
 	
 public:
 	//! default constructor
-	inactivity();
+	inactivity(screen *disp);
 	//! default destructor
 	~inactivity();
 	
@@ -135,16 +141,21 @@ private:
 	 * The time intervall to check for the current status and time of
 	 * userinactivity. The timeslice is currently 30 sec.
 	 */
-	static const int CHECK_for_INACTIVITY = 30000;
+	static const int CHECK_for_INACTIVITY = 10000;
 
 	//! TQTimer for check inactivity
 	/*!
 	 * This timer is used to check the currently status and time of
-	 * userinactivity on the X-Server. The timerinterval is defined trough
+	 * user inactivity on the X-Server. The timer interval is defined through
 	 * \ref CHECK_for_INACTIVITY .
 	 */
 	TQTimer *checkInactivity;
 
+	screen *display;  // No ownership here!!
+	bool prev_screensaver_enabled;
+	unsigned long prev_idle_time;
+	unsigned long correction_value;
+
 	// -------- FUNCTIONS ------------
 	
 	//! to check the user-inactivity on the XServer
@@ -154,7 +165,7 @@ private:
 	//! to monitor the values
 	void check( bool recheck ); 
 	//! to workaround a strange behavior of the XScreenSaver extension
-	unsigned long workaroundCreepyXServer( unsigned long );
+	unsigned long workaroundCreepyXServer(XScreenSaverInfo *_mitInfo);
 
 private slots:
 

src/screen.cpp

@@ -298,6 +298,36 @@ int screen::checkScreenSaverStatus() {
 	return -1;
 }
 
+bool screen::checkScreenSaverActive()
+{
+  // Check whether the screensaver is enabled
+  bool flagOK = false;
+	bool get_reply = false;
+	DCOPReply reply = screen_save_dcop_ref.call("isEnabled()");
+	if (reply.isValid()) {
+		if (reply.get(get_reply)) {
+			if (get_reply) {
+				flagOK = true;
+			}
+		}
+	}
+	if (!flagOK) {
+		return false;
+	}
+	// Check whether the screensaver is displayed
+  flagOK = false;
+	get_reply = false;
+	reply = screen_save_dcop_ref.call("isBlanked()");
+	if (reply.isValid()) {
+		if (reply.get(get_reply)) {
+			if (get_reply) {
+				flagOK = true;
+			}
+		}
+	}
+	return flagOK;
+}
+
 /*!
  * \b TQT_SLOT which called if the call of gnomescreensaver-command exited
  * \param gnomecheckcommand the KPocess which called this SLOT

src/screen.h

@@ -170,6 +170,8 @@ public:
 	int checkScreenSaverStatus();
 	//! for check the actual status of DPMS on the machine
 	int checkDPMSStatus();
+	//! for check whether the screensaver is being displayed or not
+	bool checkScreenSaverActive();
 
 	//! default constructor
 	screen();

src/tdepowersave.cpp

@@ -59,8 +59,8 @@ tdepowersave::tdepowersave( bool force_acpi_check, bool trace_func ) : KSystemTr
 
 	display = new screen();
 	settings = new Settings();
-	autoSuspend = new autosuspend();
-	autoDimm = new autodimm();
+	autoSuspend = new autosuspend(display);
+	autoDimm = new autodimm(display);
 	hwinfo = new HardwareInfo();
 	suspend = hwinfo->getSuspendSupport();
 
@@ -1936,7 +1936,7 @@ void tdepowersave::setAutoSuspend( bool resumed ){
 		if (resumed) {
 			autoSuspend->stop();
 			delete autoSuspend;
-			autoSuspend = new autosuspend();
+			autoSuspend = new autosuspend(display);
 			connect(autoSuspend, TQT_SIGNAL(inactivityTimeExpired()), this, TQT_SLOT(do_autosuspendWarn()));
 		}
 
@@ -1986,7 +1986,7 @@ void tdepowersave::setAutoDimm( bool resumed ){
 				// setup again
 				autoDimm->stop();
 				delete autoDimm;
-				autoDimm = new autodimm();
+				autoDimm = new autodimm(display);
 				connect(autoDimm, TQT_SIGNAL(inactivityTimeExpired()), this, TQT_SLOT(do_downDimm()));
 				connect(autoDimm, TQT_SIGNAL(UserIsActiveAgain()), this, TQT_SLOT(do_upDimm()));
 			}