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Diffstat (limited to 'ksysguard/gui/KSysGuardApplet.cc')
| -rw-r--r-- | ksysguard/gui/KSysGuardApplet.cc | 495 |
1 files changed, 495 insertions, 0 deletions
diff --git a/ksysguard/gui/KSysGuardApplet.cc b/ksysguard/gui/KSysGuardApplet.cc new file mode 100644 index 000000000..5240a068b --- /dev/null +++ b/ksysguard/gui/KSysGuardApplet.cc @@ -0,0 +1,495 @@ +/* + KSysGuard, the KDE System Guard + + Copyright (c) 1999 - 2001 Chris Schlaeger <cs@kde.org> + + 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. + + KSysGuard is currently maintained by Chris Schlaeger + <cs@kde.org>. Please do not commit any changes without consulting + me first. Thanks! + +*/ + +#include <qcursor.h> +#include <qdom.h> +#include <qdragobject.h> +#include <qfile.h> +#include <qpushbutton.h> +#include <qspinbox.h> +#include <qtooltip.h> + +#include <kdebug.h> +#include <klocale.h> +#include <kmessagebox.h> +#include <ksavefile.h> +#include <kstandarddirs.h> +#include <kpopupmenu.h> + +#include <ksgrd/SensorClient.h> +#include <ksgrd/SensorManager.h> +#include <ksgrd/StyleEngine.h> + +#include "DancingBars.h" +#include "FancyPlotter.h" +#include "KSGAppletSettings.h" +#include "MultiMeter.h" + +#include "KSysGuardApplet.h" + +extern "C" +{ + KDE_EXPORT KPanelApplet* init( QWidget *parent, const QString& configFile ) + { + KGlobal::locale()->insertCatalogue( "ksysguard" ); + return new KSysGuardApplet( configFile, KPanelApplet::Normal, + KPanelApplet::Preferences, parent, + "ksysguardapplet" ); + } +} + +KSysGuardApplet::KSysGuardApplet( const QString& configFile, Type type, + int actions, QWidget *parent, + const char *name ) + : KPanelApplet( configFile, type, actions, parent, name) +{ + mSettingsDlg = 0; + + KSGRD::SensorMgr = new KSGRD::SensorManager(); + + KSGRD::Style = new KSGRD::StyleEngine(); + + mDockCount = 1; + mDockList = new QWidget*[ mDockCount ]; + + mSizeRatio = 1.0; + addEmptyDisplay( mDockList, 0 ); + + updateInterval( 2 ); + + load(); + + setAcceptDrops( true ); +} + +KSysGuardApplet::~KSysGuardApplet() +{ + save(); + + delete [] mDockList; + mDockList = 0; + + delete mSettingsDlg; + mSettingsDlg = 0; + + delete KSGRD::Style; + delete KSGRD::SensorMgr; + KSGRD::SensorMgr = 0; +} + +int KSysGuardApplet::widthForHeight( int height ) const +{ + return ( (int) ( height * mSizeRatio + 0.5 ) * mDockCount ); +} + +int KSysGuardApplet::heightForWidth( int width ) const +{ + return ( (int) ( width * mSizeRatio + 0.5 ) * mDockCount ); +} + +void KSysGuardApplet::resizeEvent( QResizeEvent* ) +{ + layout(); +} + +void KSysGuardApplet::preferences() +{ + if(mSettingsDlg) { + return; + } + mSettingsDlg = new KSGAppletSettings( this ); + + connect( mSettingsDlg, SIGNAL( applyClicked() ), SLOT( applySettings() ) ); + connect( mSettingsDlg, SIGNAL( okClicked() ), SLOT( applySettings() ) ); + connect( mSettingsDlg, SIGNAL( finished() ), SLOT( preferencesFinished() ) ); + + mSettingsDlg->setNumDisplay( mDockCount ); + mSettingsDlg->setSizeRatio( (int) ( mSizeRatio * 100.0 + 0.5 ) ); + mSettingsDlg->setUpdateInterval( updateInterval() ); + + mSettingsDlg->show(); +} +void KSysGuardApplet::preferencesFinished() +{ + mSettingsDlg->delayedDestruct(); + mSettingsDlg = 0; +} +void KSysGuardApplet::applySettings() +{ + updateInterval( mSettingsDlg->updateInterval() ); + mSizeRatio = mSettingsDlg->sizeRatio() / 100.0; + resizeDocks( mSettingsDlg->numDisplay() ); + + for ( uint i = 0; i < mDockCount; ++i ) + if ( !mDockList[ i ]->isA( "QFrame" ) ) + ((KSGRD::SensorDisplay*)mDockList[ i ])->setUpdateInterval( updateInterval() ); + + save(); +} + +void KSysGuardApplet::sensorDisplayModified( bool modified ) +{ + if ( modified ) + save(); +} + +void KSysGuardApplet::layout() +{ + if ( orientation() == Horizontal ) { + int h = height(); + int w = (int) ( h * mSizeRatio + 0.5 ); + for ( uint i = 0; i < mDockCount; ++i ) + if ( mDockList[ i ] ) + mDockList[ i ]->setGeometry( i * w, 0, w, h ); + } else { + int w = width(); + int h = (int) ( w * mSizeRatio + 0.5 ); + for ( uint i = 0; i < mDockCount; ++i ) + if ( mDockList[ i ] ) + mDockList[ i ]->setGeometry( 0, i * h, w, h ); + } +} + +int KSysGuardApplet::findDock( const QPoint& point ) +{ + if ( orientation() == Horizontal ) + return ( point.x() / (int) ( height() * mSizeRatio + 0.5 ) ); + else + return ( point.y() / (int) ( width() * mSizeRatio + 0.5 ) ); +} + +void KSysGuardApplet::dragEnterEvent( QDragEnterEvent *e ) +{ + e->accept( QTextDrag::canDecode( e ) ); +} + +void KSysGuardApplet::dropEvent( QDropEvent *e ) +{ + QString dragObject; + + if ( QTextDrag::decode( e, dragObject ) ) { + // The host name, sensor name and type are seperated by a ' '. + QStringList parts = QStringList::split( ' ', dragObject ); + + QString hostName = parts[ 0 ]; + QString sensorName = parts[ 1 ]; + QString sensorType = parts[ 2 ]; + QString sensorDescr = parts[ 3 ]; + + if ( hostName.isEmpty() || sensorName.isEmpty() || sensorType.isEmpty() ) + return; + + int dock = findDock( e->pos() ); + if ( mDockList[ dock ]->isA( "QFrame" ) ) { + if ( sensorType == "integer" || sensorType == "float" ) { + KPopupMenu popup; + QWidget *wdg = 0; + + popup.insertTitle( i18n( "Select Display Type" ) ); + popup.insertItem( i18n( "&Signal Plotter" ), 1 ); + popup.insertItem( i18n( "&Multimeter" ), 2 ); + popup.insertItem( i18n( "&Dancing Bars" ), 3 ); + switch ( popup.exec( QCursor::pos() ) ) { + case 1: + wdg = new FancyPlotter( this, "FancyPlotter", sensorDescr, + 100.0, 100.0, true ); + break; + + case 2: + wdg = new MultiMeter( this, "MultiMeter", sensorDescr, + 100.0, 100.0, true ); + break; + + case 3: + wdg = new DancingBars( this, "DancingBars", sensorDescr, + 100, 100, true ); + break; + } + + if ( wdg ) { + delete mDockList[ dock ]; + mDockList[ dock ] = wdg; + layout(); + + connect( wdg, SIGNAL( modified( bool ) ), + SLOT( sensorDisplayModified( bool ) ) ); + + mDockList[ dock ]->show(); + } + } else { + KMessageBox::sorry( this, + i18n( "The KSysGuard applet does not support displaying of " + "this type of sensor. Please choose another sensor." ) ); + + layout(); + } + } + + if ( !mDockList[ dock ]->isA( "QFrame" ) ) + ((KSGRD::SensorDisplay*)mDockList[ dock ])-> + addSensor( hostName, sensorName, sensorType, sensorDescr ); + } + + save(); +} + +void KSysGuardApplet::customEvent( QCustomEvent *e ) +{ + if ( e->type() == QEvent::User ) { + // SensorDisplays send out this event if they want to be removed. + removeDisplay( (KSGRD::SensorDisplay*)e->data() ); + save(); + } +} + +void KSysGuardApplet::removeDisplay( KSGRD::SensorDisplay *display ) +{ + for ( uint i = 0; i < mDockCount; ++i ) + if ( display == mDockList[i] ) { + delete mDockList[ i ]; + + addEmptyDisplay( mDockList, i ); + return; + } +} + +void KSysGuardApplet::resizeDocks( uint newDockCount ) +{ + /* This function alters the number of available docks. The number of + * docks can be increased or decreased. We try to preserve existing + * docks if possible. */ + + if ( newDockCount == mDockCount ) { + emit updateLayout(); + return; + } + + // Create and initialize new dock array. + QWidget** tmp = new QWidget*[ newDockCount ]; + + uint i; + for ( i = 0; ( i < newDockCount ) && ( i < mDockCount ); ++i ) + tmp[ i ] = mDockList[ i ]; + + for ( i = newDockCount; i < mDockCount; ++i ) + if ( mDockList[ i ] ) + delete mDockList[ i ]; + + for ( i = mDockCount; i < newDockCount; ++i ) + addEmptyDisplay( tmp, i ); + + delete [] mDockList; + + mDockList = tmp; + mDockCount = newDockCount; + + emit updateLayout(); +} + +bool KSysGuardApplet::load() +{ + KStandardDirs* kstd = KGlobal::dirs(); + kstd->addResourceType( "data", "share/apps/ksysguard" ); + QString fileName = kstd->findResource( "data", "KSysGuardApplet.xml" ); + + QFile file( fileName ); + if ( !file.open( IO_ReadOnly ) ) { + KMessageBox::sorry( this, i18n( "Cannot open the file %1." ).arg( fileName ) ); + return false; + } + + // Parse the XML file. + QDomDocument doc; + + // Read in file and check for a valid XML header. + if ( !doc.setContent( &file ) ) { + KMessageBox::sorry( this, i18n( "The file %1 does not contain valid XML." ) + .arg( fileName ) ); + return false; + } + + // Check for proper document type. + if ( doc.doctype().name() != "KSysGuardApplet" ) { + KMessageBox::sorry( this, i18n( "The file %1 does not contain a valid applet " + "definition, which must have a document type 'KSysGuardApplet'." ) + .arg( fileName ) ); + return false; + } + + QDomElement element = doc.documentElement(); + bool ok; + uint count = element.attribute( "dockCnt" ).toUInt( &ok ); + if ( !ok ) + count = 1; + + mSizeRatio = element.attribute( "sizeRatio" ).toDouble( &ok ); + if ( !ok ) + mSizeRatio = 1.0; + + updateInterval( element.attribute( "interval" ).toUInt( &ok ) ); + if ( !ok ) + updateInterval( 2 ); + + resizeDocks( count ); + + /* Load lists of hosts that are needed for the work sheet and try + * to establish a connection. */ + QDomNodeList dnList = element.elementsByTagName( "host" ); + uint i; + for ( i = 0; i < dnList.count(); ++i ) { + QDomElement element = dnList.item( i ).toElement(); + int port = element.attribute( "port" ).toInt( &ok ); + if ( !ok ) + port = -1; + + KSGRD::SensorMgr->engage( element.attribute( "name" ), + element.attribute( "shell" ), + element.attribute( "command" ), port ); + } + //if no hosts are specified, at least connect to localhost + if(dnList.count() == 0) + KSGRD::SensorMgr->engage( "localhost", "", "ksysguardd", -1); + + // Load the displays and place them into the work sheet. + dnList = element.elementsByTagName( "display" ); + for ( i = 0; i < dnList.count(); ++i ) { + QDomElement element = dnList.item( i ).toElement(); + uint dock = element.attribute( "dock" ).toUInt(); + if ( i >= mDockCount ) { + kdDebug (1215) << "Dock number " << i << " out of range " + << mDockCount << endl; + return false; + } + + QString classType = element.attribute( "class" ); + KSGRD::SensorDisplay* newDisplay; + if ( classType == "FancyPlotter" ) + newDisplay = new FancyPlotter( this, "FancyPlotter", "Dummy", 100.0, 100.0, true /*no frame*/, true /*run ksysguard menu*/); + else if ( classType == "MultiMeter" ) + newDisplay = new MultiMeter( this, "MultiMeter", "Dummy", 100.0, 100.0, true /*no frame*/, true /*run ksysguard menu*/ ); + else if ( classType == "DancingBars" ) + newDisplay = new DancingBars( this, "DancingBars", "Dummy", 100, 100, true /*no frame*/, true /*run ksysguard menu*/); + else { + KMessageBox::sorry( this, i18n( "The KSysGuard applet does not support displaying of " + "this type of sensor. Please choose another sensor." ) ); + return false; + } + + newDisplay->setUpdateInterval( updateInterval() ); + + // load display specific settings + if ( !newDisplay->restoreSettings( element ) ) + return false; + + delete mDockList[ dock ]; + mDockList[ dock ] = newDisplay; + + connect( newDisplay, SIGNAL( modified( bool ) ), + SLOT( sensorDisplayModified( bool ) ) ); + } + + return true; +} + +bool KSysGuardApplet::save() +{ + // Parse the XML file. + QDomDocument doc( "KSysGuardApplet" ); + doc.appendChild( doc.createProcessingInstruction( + "xml", "version=\"1.0\" encoding=\"UTF-8\"" ) ); + + // save work sheet information + QDomElement ws = doc.createElement( "WorkSheet" ); + doc.appendChild( ws ); + ws.setAttribute( "dockCnt", mDockCount ); + ws.setAttribute( "sizeRatio", mSizeRatio ); + ws.setAttribute( "interval", updateInterval() ); + + QStringList hosts; + uint i; + for ( i = 0; i < mDockCount; ++i ) + if ( !mDockList[ i ]->isA( "QFrame" ) ) + ((KSGRD::SensorDisplay*)mDockList[ i ])->hosts( hosts ); + + // save host information (name, shell, etc.) + QStringList::Iterator it; + for ( it = hosts.begin(); it != hosts.end(); ++it ) { + QString shell, command; + int port; + + if ( KSGRD::SensorMgr->hostInfo( *it, shell, command, port ) ) { + QDomElement host = doc.createElement( "host" ); + ws.appendChild( host ); + host.setAttribute( "name", *it ); + host.setAttribute( "shell", shell ); + host.setAttribute( "command", command ); + host.setAttribute( "port", port ); + } + } + + for ( i = 0; i < mDockCount; ++i ) + if ( !mDockList[ i ]->isA( "QFrame" ) ) { + QDomElement element = doc.createElement( "display" ); + ws.appendChild( element ); + element.setAttribute( "dock", i ); + element.setAttribute( "class", mDockList[ i ]->className() ); + + ((KSGRD::SensorDisplay*)mDockList[ i ])->saveSettings( doc, element ); + } + + KStandardDirs* kstd = KGlobal::dirs(); + kstd->addResourceType( "data", "share/apps/ksysguard" ); + QString fileName = kstd->saveLocation( "data", "ksysguard" ); + fileName += "/KSysGuardApplet.xml"; + + KSaveFile file( fileName, 0644 ); + + if ( file.status() == 0 ) + { + file.textStream()->setEncoding( QTextStream::UnicodeUTF8 ); + *(file.textStream()) << doc; + file.close(); + } + else + { + KMessageBox::sorry( this, i18n( "Cannot save file %1" ).arg( fileName ) ); + return false; + } + + return true; +} + +void KSysGuardApplet::addEmptyDisplay( QWidget **dock, uint pos ) +{ + dock[ pos ] = new QFrame( this ); + ((QFrame*)dock[ pos ])->setFrameStyle( QFrame::WinPanel | QFrame::Sunken ); + QToolTip::add( dock[ pos ], + i18n( "Drag sensors from the KDE System Guard into this cell." ) ); + + layout(); + if ( isVisible() ) + dock[ pos ]->show(); +} + +#include "KSysGuardApplet.moc" |