summaryrefslogtreecommitdiffstats
path: root/src/screen.cpp
blob: ef68a267a7702d0deafc8cde5abb4d49b635a0f5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
/***************************************************************************
 *   Copyright (C) 2004-2006 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 screen.cpp
 * All here displayed file members of screen.cpp are related to operations with the
 * XSreensaver/XServer. This functions are basic/low level operations. They are
 * inspired, partly copied and modified from <a href="http://www.mplayerhq.hu/">MPlayer</a>
 * code (1.05pre). Thanks for the inspiration. \n \n
 * All 'higher level' class members of the class screen can be found here: \ref screen
 * \brief 	In this file can be found all screensaver related code.
 * \author 	Danny Kukawka, <dkukawka@suse.de>, <danny.kukawka@web.de>
 * \date    	2004 - 2006
 */
 
 // own headers
#include "screen.h"
#include "tdepowersave_debug.h"

/* needed for lXext C library linkage */
extern "C" {
	#include <X11/Xproto.h>
	#include <X11/extensions/dpms.h>
	#include <X11/extensions/XTest.h>
}

// KDE Headers
#include <kprocess.h>

/*! The default constructor of the class screen */
screen::screen() {
	kdDebugFuncIn(trace);

	xscreensaver_lock = NULL;
	xscreensaver_reset = NULL;
	gnomescreensaver_lock = NULL;
	gnomeScreensaverCheck = NULL;
	xlock = NULL;

	got_XScreensaver = false;
	checkDPMSStatus();
	check_xscreensaver_timer_runs = false;
	
	SCREENSAVER_STATUS = -1;
	screen_save_dcop_ref = DCOPRef( "kdesktop", "KScreensaverIface" );
	
	check_xscreensaver_timer =  new TQTimer( this );
	connect( check_xscreensaver_timer, TQT_SIGNAL(timeout()), this, TQT_SLOT(xscreensaver_ping() ));

	SCREENSAVER_STATUS = checkScreenSaverStatus();
	kdDebugFuncOut(trace);
}

/*! The default destructor of the class screen */
screen::~screen() {
	kdDebugFuncIn(trace);
}

/*!
* To enable/disable the TDEScreensaver/Xscreensaver.
* \param enable true: activate/enable screensaver / false: deactivate/disable screensacer
* \return the result of try to set the screensaver
* \retval true if screensaver set correct
* \retval false if there is a error
*/
bool screen::setScreenSaver(bool enable){
	kdDebugFuncIn(trace);

	if(SCREENSAVER_STATUS == -1) SCREENSAVER_STATUS = checkScreenSaverStatus();
	if((SCREENSAVER_STATUS == 1) || (SCREENSAVER_STATUS == 0)){
		screen_save_dcop_ref.send( "enable", enable);
		kdDebugFuncOut(trace);
		return true;
	}

	if(SCREENSAVER_STATUS == 11 || SCREENSAVER_STATUS == 10){
		if(enable) {
			check_xscreensaver_timer->stop();
			check_xscreensaver_timer_runs = false;
		}
		else {
			check_xscreensaver_timer->start( xScreenSaver_timer_interval );
			check_xscreensaver_timer_runs = true;
		}
		kdDebugFuncOut(trace);
		return true;	
	} else {
		kdDebugFuncOut(trace);
		return false;
	}
}


/* * * * *
 * this inspired, partly copied and modified from MPlayer Code (1.05pre)
 * START Section
 */
//! to handle information about wrong XWindows
/*!
* This integer represent information about XWindows.
* - got_badwindow == True:  if the searched Window is wrong or if there is a problem/error
* - got_badwindow == False: if there is no problem/error
*/
static int got_badwindow;
//! ErrorHandler 
/*! Errorhandler for all X-Server related operations */
static XErrorHandler defaultHandler;

//! to find/handle bad XWindows / XSetErrorHandler
/*!
* This function is involved by the search for the window of the Xscreensaver. By this 
* function we seperate the BadWindow-error and set \ref got_badwindow if we get a BadWindow.
* For more information take a look at the XServer Documentation!
* \param dpy pointer to the active X-Display
* \param error pointer to XErrorEvent
* \return a info about a window-error
* \retval 0 if the window is a BadWindow as a integer 
* \retval n the errorID/XErrorHandler if there is a error != BadWindow
*/
static int badwindow_handler(Display * dpy, XErrorEvent * error) {
	if (error->error_code != BadWindow)
		return (*defaultHandler) (dpy, error);
	got_badwindow = True;
	return 0;
}

//! to find the X-window of XScreensaver
/*!
* This function search for the X-Window of the active/activated XScreensaver.
* \param dpy pointer to the active X-Display
* \return The WindowID of the active XScreensaver.
* \retval 0 if no Windows/Xscreensaver was found
* \retval n ID of the founded XScreensaver window
*/
static Window find_xscreensaver_window(Display * dpy) {
	kdDebugFuncIn(trace);

	Window root = RootWindowOfScreen(DefaultScreenOfDisplay(dpy));
	Window root2, parent, *kids;
	Window retval = 0;
	Atom xs_version;
	unsigned int i;
	unsigned int nkids = 0;

	xs_version = XInternAtom(dpy, "_SCREENSAVER_VERSION", True);

	if (!(xs_version != None && XQueryTree(dpy, root, &root2, &parent, &kids, &nkids) 
		&& kids && nkids)) {
		kdDebugFuncOut(trace);
		return 0;
	}

	defaultHandler = XSetErrorHandler(badwindow_handler);

	for (i = 0; i < nkids; i++) {
		Atom type;
		int format, status;
		unsigned long nitems, bytesafter;
		unsigned char *v;

		got_badwindow = False;
		status = XGetWindowProperty(dpy, kids[i], xs_version, 0, 200, False, XA_STRING, &type, &format, 
					    &nitems, &bytesafter, &v);
		XSync(dpy, False);
		if (got_badwindow) status = BadWindow;

		if (status == Success && type != None){
			retval = kids[i];
			break;
		}
	}
	XFree(kids);
	XSetErrorHandler(defaultHandler);
	kdDebugFuncOut(trace);
	return retval;
}

/*!
* This function is used to ping the XScreensaver. There is no direct way to stop
* the XScreensaver without to kill/stop an restart or modify config-files of the 
* current user. \n \n
* We ping the xscreensaver as defined in the TQTimer-interval \ref xScreenSaver_timer_interval .
* The value of \ref xScreenSaver_timer_interval is 58 sec at the moment. The intervall must be
* smaller then 1 minute (this is the smallest interval of Xscreensaver a.t.m.).
*/
void screen::xscreensaver_ping(){
	kdDebugFuncIn(trace);

	if(!got_XScreensaver) {
		mDisplay = tqt_xdisplay();
		xs_windowid = find_xscreensaver_window(mDisplay);
		
		Atom deactivate = XInternAtom(mDisplay, "DEACTIVATE", False);
		Atom screensaver = XInternAtom(mDisplay, "SCREENSAVER", False);
		
		ev.xany.type = ClientMessage;
		ev.xclient.display = mDisplay;
		ev.xclient.window = xs_windowid;
		ev.xclient.message_type = screensaver;
		ev.xclient.format = 32;
		memset(&ev.xclient.data, 0, sizeof(ev.xclient.data));
		ev.xclient.data.l[0] = (long) deactivate;
		
		if(xs_windowid != 0) got_XScreensaver = true;
	}
	if(got_XScreensaver){
		if(XSendEvent(mDisplay, xs_windowid, False, 0L, &ev) == 0){
			if(check_xscreensaver_timer->isActive()) {
				check_xscreensaver_timer->stop();
				this->got_XScreensaver = false;
			}
		}
		XSync(mDisplay, False);
	}

	kdDebugFuncOut(trace);
}
/*
 * END Section
 * * * * * * */ 

/*!
* Checks if KScreenSaver or XscreenSaver is activated
* \return The result of the check as an integer value.
* \retval 0 TDEScreensaver is disabled
* \retval 1 TDEScreensaver is activated
* \retval 10 Xscreensaver is not found or not running
* \retval 11 Xscreensaver is activated
* \retval 99 gnome-screensaver check is running
* \retval -1 else
*/
int screen::checkScreenSaverStatus() {
	kdDebugFuncIn(trace);
	
	bool get_reply = false;	
	int kScreenSaver_tmp_status = -1;
	int check = -1;

	// check for KScreenSaver
	DCOPReply reply = screen_save_dcop_ref.call("isEnabled()");
	if(reply.isValid()){
		if(reply.get(get_reply)){
			if(get_reply) return 1;
			/* don't return status her because we must also check if
			 * XScreensaver is activated !!!
			 */ 
			else kScreenSaver_tmp_status = 0;
		}
	}
	// check for XScreensaver
	if (got_XScreensaver) return 11;
	else if(!got_XScreensaver) {
		Display *dpy = tqt_xdisplay();
		Window windowid = find_xscreensaver_window(dpy);
		if(windowid == 0) {
			//Xscreensaver not detected
			check_xscreensaver_timer->stop();
			// TDEScreensaver active and no XScreensaver found
			if(kScreenSaver_tmp_status == 0) return 0;
			// no TDEScreensaver and no XScreensaver found
			else check = 10;
		}
		else return 11;
	}
	
	// check for gnome-screen-saver
	if (check == 10) {
		delete gnomeScreensaverCheck;

		gnomeScreensaverCheck = new TDEProcess;
		*gnomeScreensaverCheck << "gnome-screensaver-command" << "--query";

		connect( gnomeScreensaverCheck , TQT_SIGNAL(processExited(TDEProcess *)),TQT_SLOT(getGSExited(TDEProcess *)));
		
		if(!gnomeScreensaverCheck->start(TDEProcess::NotifyOnExit)) 
		{
			delete gnomeScreensaverCheck;
			gnomeScreensaverCheck = NULL;
			return 10;
		}
		else return 99;	
	}

	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
 */
void screen::getGSExited (TDEProcess *gnomecheckcommand) {
	kdDebugFuncIn(trace);

	if (gnomecheckcommand->normalExit()){
		if (gnomecheckcommand->exitStatus() == 1) SCREENSAVER_STATUS = 10;
		else if (gnomecheckcommand->exitStatus() == 0) SCREENSAVER_STATUS = 20;
	} else {
		SCREENSAVER_STATUS = 10;
	}

	delete gnomeScreensaverCheck;
	gnomeScreensaverCheck=NULL;	

	kdDebugFuncOut(trace);
	return;
} 
 
/*!
* This function check if DMPS is activated on the active X-Server.
* \return Integer value with the result of the check
* \retval 1 if DMPS is enabled
* \retval 0 if DMPS is disabled
* \retval -1 if there is a error
*/
int screen::checkDPMSStatus(){
	kdDebugFuncIn(trace);

	CARD16 state;
	BOOL onoff;
	int dummy;
	
	Display *dpy = tqt_xdisplay();
	
	if (!DPMSQueryExtension(dpy, &dummy, &dummy) || !DPMSCapable(dpy)){
		has_DPMS = false;
		kdDebugFuncOut(trace);
		return -1;
	}
	else
		has_DPMS = true;
	
	DPMSInfo(dpy, &state, &onoff);
	if(onoff) {
		kdDebugFuncOut(trace);
		return 1;
	} else {
		kdDebugFuncOut(trace);
		return 0;
	}
}


/*!
* To set DPMS on X-Server on/off.
* \param enable true: activate/enable DMPS / false: deactivate/disable DPMS
* \return the result of try to set DPMS 
* \retval true if DMPS correct set false
* \retval false if fail (DPMS not supported)
* \todo \li check/evaluate for errormessages
*       \li check if DPMS-Settings correct set if DPMSEnable(dpy) used 
*/
bool screen::setDPMS( bool enable ){	
	kdDebugFuncIn(trace);

	defaultHandler = XSetErrorHandler(badwindow_handler);

	Display *dpy = tqt_xdisplay();
	
	int dummy;
	if (!DPMSQueryExtension(dpy, &dummy, &dummy) || !DPMSCapable(dpy)){
		has_DPMS = false;
		XSetErrorHandler(defaultHandler);		
		kdDebugFuncOut(trace);
		return false;
	}
	
	if(enable) DPMSEnable(dpy);
	else DPMSDisable(dpy);
	
	XFlush(dpy);
	XSetErrorHandler(defaultHandler);
	
	kdDebugFuncOut(trace);
	return true;
}

/*!
* This function set the Timeouts for DPMS for the X-Server.
* \param standby_timeout time in seconds to stand-by the display as integer value 
* \param suspend_timeout time in seconds to suspend the display as integer value
* \param off_timeout time in seconds to switch off the display as integer value
* \return the result of try to set DPMS-Timeouts
* \retval true if DMPS correct set false
* \retval false if fail (DPMS not supported)
*/
bool screen::setDPMSTimeouts( int standby_timeout, int suspend_timeout, int off_timeout){
	kdDebugFuncIn(trace);

	//XErrFunc defaultHandler;
	defaultHandler = XSetErrorHandler(badwindow_handler);

	Display *dpy = tqt_xdisplay();
	
	int dummy;
	if (!DPMSQueryExtension(dpy, &dummy, &dummy) || !DPMSCapable(dpy)){
		has_DPMS = false;
		XSetErrorHandler(defaultHandler);		
		kdDebugFuncOut(trace);
		return false;
	}
	
	DPMSSetTimeouts(dpy, 60 * standby_timeout, 60 * suspend_timeout, 60 * off_timeout);
	
	XFlush(dpy);
	XSetErrorHandler(defaultHandler);
	kdDebugFuncOut(trace);
	return true;
}

/*!
* Use this function to lock the screen. This function use automatically the right
* method for KDE or GNOME.
* \return boolean with the result of the operation
* \retval true if the requested method worked
* \retval false if there was a error
*/
bool screen::lockScreen(){
	kdDebugFuncIn(trace);

	// screensaver status known?
	if(SCREENSAVER_STATUS == -1) SCREENSAVER_STATUS = checkScreenSaverStatus();

	// set lock for TDEScreensaver
	if((SCREENSAVER_STATUS == 1) || (SCREENSAVER_STATUS == 0)){
		DCOPReply reply = screen_save_dcop_ref.call("lock");
		if ( reply.isValid() ) {
			return true;
		} else {
			kdWarning() << "Could not lock TDEScreensaver, try XScreensaver as fallback." << endl;
			goto xscreensaver;
		}
	}
	// set lock for XScreensaver
	else if(SCREENSAVER_STATUS == 11){
xscreensaver:
		delete xscreensaver_lock;		

		xscreensaver_lock = new TDEProcess;
		*xscreensaver_lock << "xscreensaver-command" << "-lock";
	        connect(xscreensaver_lock, TQT_SIGNAL(processExited(TDEProcess*)),
	                this, TQT_SLOT(cleanProcess(TDEProcess*)));

		bool status = xscreensaver_lock->start(TDEProcess::DontCare);
		if(!status)
		{
			delete xscreensaver_lock;
			xscreensaver_lock = NULL;
		}
		return status;
	}
	// lock with gnome-screen-saver
	else if(SCREENSAVER_STATUS == 20){
		delete gnomescreensaver_lock;

		gnomescreensaver_lock = new TDEProcess;
		*gnomescreensaver_lock << "gnome-screensaver-command" << "--lock";
	
	        connect(gnomescreensaver_lock, TQT_SIGNAL(processExited(TDEProcess*)),
	                this, TQT_SLOT(cleanProcess(TDEProcess*)));	
		bool status = gnomescreensaver_lock->start(TDEProcess::DontCare);
		if(!status)
		{
			delete gnomescreensaver_lock;
			gnomescreensaver_lock=NULL;
		}
		return status;
	}
	// set lock for xlock --> no tdescreensaver, no xscreensaver present and
	// the check for gnome screensaver is not finished. This should normaly
	// not happen, but in this case we use xlock
	else if(SCREENSAVER_STATUS == 10 || SCREENSAVER_STATUS == 99){
		delete xlock;
		
		xlock = new TDEProcess;
		*xlock << "xlock"; //<< "-mode" << "blank";
                connect(xlock, TQT_SIGNAL(processExited(TDEProcess*)),
                           this, TQT_SLOT(cleanProcess(TDEProcess*)));
		bool status = xlock->start(TDEProcess::DontCare);
		if(!status)
		{
			delete xlock;
			xlock = NULL;
		}
		return status;
	}
	else return false;
}

/*!
* Use this function to lock the screen with a specified lock method.
* \param lock_withMethod a TQString, which contain the alias for the lock
*			 command.
* \return boolean with the result of the operation
* \retval true if the requested method worked
* \retval false if there was a error
* \todo check if we should also set blank only if the user would like!!!
*/
bool screen::lockScreen( TQString lock_withMethod ) {
	kdDebugFuncIn(trace);

	if (lock_withMethod == "automatic") {
		lockScreen();
		return true;
	}
	else if (lock_withMethod == "xlock") {
		delete xlock;
		
		xlock = new TDEProcess;
		*xlock << "xlock";
                connect(xlock, TQT_SIGNAL(processExited(TDEProcess*)),
                           this, TQT_SLOT(cleanProcess(TDEProcess*)));

                bool status = xlock->start(TDEProcess::DontCare);
		if(!status)
		{
			delete xlock;
			xlock=NULL;
		}

		return status;
	}
	else if (lock_withMethod == "gnomescreensaver") {
		gnomescreensaver_lock = new TDEProcess;
		*gnomescreensaver_lock << "gnome-screensaver-command" << "--lock";
                connect(gnomescreensaver_lock, TQT_SIGNAL(processExited(TDEProcess*)),
                                                this, TQT_SLOT(cleanProcess(TDEProcess*)));

		bool status = gnomescreensaver_lock->start(TDEProcess::DontCare);
		if(!status)
		{
			delete gnomescreensaver_lock;
			gnomescreensaver_lock = NULL;
		}
		return status;
	}
	else {
		// screensaver status known?
		SCREENSAVER_STATUS = checkScreenSaverStatus();
		
		if (lock_withMethod == "tdescreensaver") {
			if((SCREENSAVER_STATUS == 1) || (SCREENSAVER_STATUS == 0)){	
				DCOPReply reply = screen_save_dcop_ref.call("lock");
				if ( reply.isValid() ) {
					return true;
				} else {
					kdWarning() << "Could not call lock for TDEScreensaver, try XScreensaver "
						    << "as fallback." << endl;
					goto xscreensaver;
				}
			}
			else return false;
		}
		else if (lock_withMethod == "xscreensaver") {
			if(SCREENSAVER_STATUS == 11){
xscreensaver:
				delete xscreensaver_lock; 
				
				xscreensaver_lock = new TDEProcess;
				*xscreensaver_lock << "xscreensaver-command" << "-lock";
		                connect(xscreensaver_lock, TQT_SIGNAL(processExited(TDEProcess*)),
                                                this, TQT_SLOT(cleanProcess(TDEProcess*)));

				bool status = xscreensaver_lock->start(TDEProcess::DontCare);
				if(!status)
				{
					delete xscreensaver_lock;
					xscreensaver_lock = NULL;
				}
				return status;
			}
			else return false;
		}
		else return false;
	}
	return false;
}

/*!
* Use this function to set the screensaver to 'blank only' instead of 
* using the in KDE or GNOME set screensaver.
* \todo find a way to set the xscreensaver to 'blank only'
*/
void screen::blankOnlyScreen( bool blankonly ){
	kdDebugFuncIn(trace);

	if(SCREENSAVER_STATUS == -1) SCREENSAVER_STATUS = checkScreenSaverStatus();
	// set TDEScreensaver
	if((SCREENSAVER_STATUS == 1) || (SCREENSAVER_STATUS == 0)){	
		screen_save_dcop_ref.send("setBlankOnly", blankonly);
	}
	// set XScreensaver
	else if(SCREENSAVER_STATUS == 11){
		// implement something !!!
	}

	kdDebugFuncOut(trace);
}

/*!
* Use this function to reset the KDE screensaver/DPMS settings
* \return boolean with the result of the operation
* \retval true if the reset was called
* \retval false if there was a error
*/
bool screen::resetKDEScreensaver(){
	kdDebugFuncIn(trace);

	if(SCREENSAVER_STATUS == -1) 
		SCREENSAVER_STATUS = checkScreenSaverStatus();

	// do this only if the screensaver is not running
	if(SCREENSAVER_STATUS == 0){	
		DCOPReply reply = screen_save_dcop_ref.call("configure");
		if ( reply.isValid() ) {
			kdDebugFuncOut(trace);
			return true;
		} else {
			kdWarning() << "Could not call configure() for the KDE screensaver." << endl;
			kdDebugFuncOut(trace);
			return false;
		}
	} else {
		kdDebugFuncOut(trace);
		return false;
	}
}

/*!
* Use this function to reset the xscreensaver settings
* \return boolean with the result of the operation
* \retval true if the reset was called
* \retval false if there was a error
*/
bool screen::resetXScreensaver(){
	kdDebugFuncIn(trace);

	if(checkScreenSaverStatus() == 11) {
		
		delete xscreensaver_reset;		

		xscreensaver_reset = new TDEProcess;
		*xscreensaver_reset << "xscreensaver-command" << "-restart";
	        connect(xscreensaver_reset, TQT_SIGNAL(processExited(TDEProcess*)),
	                this, TQT_SLOT(cleanProcess(TDEProcess*)));

		bool status = xscreensaver_reset->start(TDEProcess::DontCare);
		if(!status)
		{
			delete xscreensaver_reset;
			xscreensaver_reset = NULL;
		}
		kdDebugFuncOut(trace);
		return status;
	} else {
		kdDebugFuncOut(trace);
		return false;
	}
}

/*!
* function to call xset commandline tool to force shutdown the display with dpms
*/
void screen::forceDPMSOff() {
	kdDebugFuncIn(trace);
	
	TDEProcess *xset = new TDEProcess;
	*xset << "xset" << "dpms" << "force" << "off";
        connect(xset, TQT_SIGNAL(processExited(TDEProcess*)),
                this, TQT_SLOT(cleanProcess(TDEProcess*)));
	if(!xset->start())
	{
		delete xset;
	}

	kdDebugFuncOut(trace);
}

/*!
 * function to clean TDEProcess objects
 */
void screen::cleanProcess(TDEProcess* proc)
{
	delete proc;
	proc = NULL;
}

/*!
* function to fake a key event for the shift key. Use this to show the login
* passwd dialog after suspend if we locked the screen.
*/
void screen::fakeShiftKeyEvent() {
	kdDebugFuncIn(trace);

	Display *dpy = tqt_xdisplay();

	if (dpy) {
		XTestFakeKeyEvent(dpy, 62, 1, 0);
		XTestFakeKeyEvent(dpy, 62, 0, 0);
		
		XFlush(dpy);
	}

	kdDebugFuncOut(trace);
	return;
}

#include "screen.moc"