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diff --git a/kdesktop/lockeng.cc b/kdesktop/lockeng.cc
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+//===========================================================================
+//
+// This file is part of the KDE project
+//
+// Copyright (c) 1999 Martin R. Jones <[email protected]>
+//
+
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <kstandarddirs.h>
+#include <kapplication.h>
+#include <kservicegroup.h>
+#include <kdebug.h>
+#include <klocale.h>
+#include <qfile.h>
+#include <dcopclient.h>
+#include <assert.h>
+
+#include "lockeng.h"
+#include "lockeng.moc"
+#include "kdesktopsettings.h"
+
+#include "xautolock_c.h"
+extern xautolock_corner_t xautolock_corners[ 4 ];
+
+
+//===========================================================================
+//
+// Screen saver engine. Doesn't handle the actual screensaver window,
+// starting screensaver hacks, or password entry. That's done by
+// a newly started process.
+//
+SaverEngine::SaverEngine()
+ : DCOPObject("KScreensaverIface"),
+ QWidget(),
+ mBlankOnly(false)
+{
+ // Save X screensaver parameters
+ XGetScreenSaver(qt_xdisplay(), &mXTimeout, &mXInterval,
+ &mXBlanking, &mXExposures);
+
+ mState = Waiting;
+ mXAutoLock = 0;
+ mEnabled = false;
+
+ connect(&mLockProcess, SIGNAL(processExited(KProcess *)),
+ SLOT(lockProcessExited()));
+
+ configure();
+}
+
+//---------------------------------------------------------------------------
+//
+// Destructor - usual cleanups.
+//
+SaverEngine::~SaverEngine()
+{
+ mLockProcess.detach(); // don't kill it if we crash
+ delete mXAutoLock;
+
+ // Restore X screensaver parameters
+ XSetScreenSaver(qt_xdisplay(), mXTimeout, mXInterval, mXBlanking,
+ mXExposures);
+}
+
+//---------------------------------------------------------------------------
+
+// This should be called only using DCOP.
+void SaverEngine::lock()
+{
+ bool ok = true;
+ if (mState == Waiting)
+ {
+ ok = startLockProcess( ForceLock );
+// It takes a while for kdesktop_lock to start and lock the screen.
+// Therefore delay the DCOP call until it tells kdesktop that the locking is in effect.
+// This is done only for --forcelock .
+ if( ok && mState != Saving )
+ {
+ DCOPClientTransaction* trans = kapp->dcopClient()->beginTransaction();
+ mLockTransactions.append( trans );
+ }
+ }
+ else
+ {
+ mLockProcess.kill( SIGHUP );
+ }
+}
+
+void SaverEngine::processLockTransactions()
+{
+ for( QValueVector< DCOPClientTransaction* >::ConstIterator it = mLockTransactions.begin();
+ it != mLockTransactions.end();
+ ++it )
+ {
+ QCString replyType = "void";
+ QByteArray arr;
+ kapp->dcopClient()->endTransaction( *it, replyType, arr );
+ }
+ mLockTransactions.clear();
+}
+
+void SaverEngine::saverLockReady()
+{
+ if( mState != Preparing )
+ {
+ kdDebug( 1204 ) << "Got unexpected saverReady()" << endl;
+ }
+ kdDebug( 1204 ) << "Saver Lock Ready" << endl;
+ processLockTransactions();
+}
+
+//---------------------------------------------------------------------------
+void SaverEngine::save()
+{
+ if (mState == Waiting)
+ {
+ startLockProcess( DefaultLock );
+ }
+}
+
+//---------------------------------------------------------------------------
+void SaverEngine::quit()
+{
+ if (mState == Saving || mState == Preparing)
+ {
+ stopLockProcess();
+ }
+}
+
+//---------------------------------------------------------------------------
+bool SaverEngine::isEnabled()
+{
+ return mEnabled;
+}
+
+//---------------------------------------------------------------------------
+bool SaverEngine::enable( bool e )
+{
+ if ( e == mEnabled )
+ return true;
+
+ // If we aren't in a suitable state, we will not reconfigure.
+ if (mState != Waiting)
+ return false;
+
+ mEnabled = e;
+
+ if (mEnabled)
+ {
+ if ( !mXAutoLock ) {
+ mXAutoLock = new XAutoLock();
+ connect(mXAutoLock, SIGNAL(timeout()), SLOT(idleTimeout()));
+ }
+ mXAutoLock->setTimeout(mTimeout);
+ mXAutoLock->setDPMS(true);
+ //mXAutoLock->changeCornerLockStatus( mLockCornerTopLeft, mLockCornerTopRight, mLockCornerBottomLeft, mLockCornerBottomRight);
+
+ // We'll handle blanking
+ XSetScreenSaver(qt_xdisplay(), mTimeout + 10, mXInterval, PreferBlanking, mXExposures);
+ kdDebug() << "XSetScreenSaver " << mTimeout + 10 << endl;
+
+ mXAutoLock->start();
+
+ kdDebug(1204) << "Saver Engine started, timeout: " << mTimeout << endl;
+ }
+ else
+ {
+ if (mXAutoLock)
+ {
+ delete mXAutoLock;
+ mXAutoLock = 0;
+ }
+
+ XForceScreenSaver(qt_xdisplay(), ScreenSaverReset );
+ XSetScreenSaver(qt_xdisplay(), 0, mXInterval, PreferBlanking, DontAllowExposures);
+ kdDebug(1204) << "Saver Engine disabled" << endl;
+ }
+
+ return true;
+}
+
+//---------------------------------------------------------------------------
+bool SaverEngine::isBlanked()
+{
+ return (mState != Waiting);
+}
+
+//---------------------------------------------------------------------------
+//
+// Read and apply configuration.
+//
+void SaverEngine::configure()
+{
+ // If we aren't in a suitable state, we will not reconfigure.
+ if (mState != Waiting)
+ return;
+
+ // create a new config obj to ensure we read the latest options
+ KDesktopSettings::self()->readConfig();
+
+ bool e = KDesktopSettings::screenSaverEnabled();
+ mTimeout = KDesktopSettings::timeout();
+
+ mEnabled = !e; // force the enable()
+
+ int action;
+ action = KDesktopSettings::actionTopLeft();
+ xautolock_corners[0] = applyManualSettings(action);
+ action = KDesktopSettings::actionTopRight();
+ xautolock_corners[1] = applyManualSettings(action);
+ action = KDesktopSettings::actionBottomLeft();
+ xautolock_corners[2] = applyManualSettings(action);
+ action = KDesktopSettings::actionBottomRight();
+ xautolock_corners[3] = applyManualSettings(action);
+
+ enable( e );
+}
+
+//---------------------------------------------------------------------------
+//
+// Set a variable to indicate only using the blanker and not the saver.
+//
+void SaverEngine::setBlankOnly( bool blankOnly )
+{
+ mBlankOnly = blankOnly;
+ // FIXME: if running, stop and restart? What about security
+ // implications of this?
+}
+
+//---------------------------------------------------------------------------
+//
+// Start the screen saver.
+//
+bool SaverEngine::startLockProcess( LockType lock_type )
+{
+ if (mState != Waiting)
+ return true;
+
+ kdDebug(1204) << "SaverEngine: starting saver" << endl;
+ emitDCOPSignal("KDE_start_screensaver()", QByteArray());
+
+ if (mLockProcess.isRunning())
+ {
+ stopLockProcess();
+ }
+ mLockProcess.clearArguments();
+ QString path = KStandardDirs::findExe( "kdesktop_lock" );
+ if( path.isEmpty())
+ {
+ kdDebug( 1204 ) << "Can't find kdesktop_lock!" << endl;
+ return false;
+ }
+ mLockProcess << path;
+ switch( lock_type )
+ {
+ case ForceLock:
+ mLockProcess << QString( "--forcelock" );
+ break;
+ case DontLock:
+ mLockProcess << QString( "--dontlock" );
+ break;
+ default:
+ break;
+ }
+ if (mBlankOnly)
+ mLockProcess << QString( "--blank" );
+
+ if (mLockProcess.start() == false )
+ {
+ kdDebug( 1204 ) << "Failed to start kdesktop_lock!" << endl;
+ return false;
+ }
+ XSetScreenSaver(qt_xdisplay(), 0, mXInterval, PreferBlanking, mXExposures);
+
+ mState = Preparing;
+ if (mXAutoLock)
+ {
+ mXAutoLock->stop();
+ }
+ return true;
+}
+
+//---------------------------------------------------------------------------
+//
+// Stop the screen saver.
+//
+void SaverEngine::stopLockProcess()
+{
+ if (mState == Waiting)
+ {
+ kdWarning(1204) << "SaverEngine::stopSaver() saver not active" << endl;
+ return;
+ }
+ kdDebug(1204) << "SaverEngine: stopping lock" << endl;
+ emitDCOPSignal("KDE_stop_screensaver()", QByteArray());
+
+ mLockProcess.kill();
+
+ if (mEnabled)
+ {
+ if (mXAutoLock)
+ {
+ mXAutoLock->start();
+ }
+ XForceScreenSaver(qt_xdisplay(), ScreenSaverReset );
+ XSetScreenSaver(qt_xdisplay(), mTimeout + 10, mXInterval, PreferBlanking, mXExposures);
+ }
+ processLockTransactions();
+ mState = Waiting;
+}
+
+void SaverEngine::lockProcessExited()
+{
+ kdDebug(1204) << "SaverEngine: lock exited" << endl;
+ if( mState == Waiting )
+ return;
+ emitDCOPSignal("KDE_stop_screensaver()", QByteArray());
+ if (mEnabled)
+ {
+ if (mXAutoLock)
+ {
+ mXAutoLock->start();
+ }
+ XForceScreenSaver(qt_xdisplay(), ScreenSaverReset );
+ XSetScreenSaver(qt_xdisplay(), mTimeout + 10, mXInterval, PreferBlanking, mXExposures);
+ }
+ processLockTransactions();
+ mState = Waiting;
+}
+
+//---------------------------------------------------------------------------
+//
+// XAutoLock has detected the required idle time.
+//
+void SaverEngine::idleTimeout()
+{
+ // disable X screensaver
+ XForceScreenSaver(qt_xdisplay(), ScreenSaverReset );
+ XSetScreenSaver(qt_xdisplay(), 0, mXInterval, PreferBlanking, DontAllowExposures);
+ startLockProcess( DefaultLock );
+}
+
+xautolock_corner_t SaverEngine::applyManualSettings(int action)
+{
+ if (action == 0)
+ {
+ kdDebug() << "no lock" << endl;
+ return ca_nothing;
+ }
+ else
+ if (action == 1)
+ {
+ kdDebug() << "lock screen" << endl;
+ return ca_forceLock;
+ }
+ else
+ if (action == 2)
+ {
+ kdDebug() << "prevent lock" << endl;
+ return ca_dontLock;
+ }
+ else
+ {
+ kdDebug() << "no lock nothing" << endl;
+ return ca_nothing;
+ }
+}
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