kdecore Library API Documentation

kwinmodule.cpp

00001 /*
00002     $Id: kwinmodule.cpp,v 1.62 2003/12/02 15:27:04 lunakl Exp $
00003 
00004     This file is part of the KDE libraries
00005     Copyright (C) 1999 Matthias Ettrich (ettrich@kde.org)
00006 
00007 
00008     This library is free software; you can redistribute it and/or
00009     modify it under the terms of the GNU Library General Public
00010     License as published by the Free Software Foundation; either
00011     version 2 of the License, or (at your option) any later version.
00012 
00013     This library is distributed in the hope that it will be useful,
00014     but WITHOUT ANY WARRANTY; without even the implied warranty of
00015     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016     Library General Public License for more details.
00017 
00018     You should have received a copy of the GNU Library General Public License
00019     along with this library; see the file COPYING.LIB.  If not, write to
00020     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00021     Boston, MA 02111-1307, USA.
00022 */
00023 
00024 #include <qwidget.h>
00025 #ifdef Q_WS_X11 //FIXME
00026 #include "kwinmodule.h"
00027 #include "kwin.h"
00028 #include <X11/Xatom.h>
00029 #include "kapplication.h"
00030 #include "kdebug.h"
00031 #include <qtl.h>
00032 #include <qptrlist.h>
00033 #include <klocale.h>
00034 #include <dcopclient.h>
00035 #include "netwm.h"
00036 
00037 static KWinModulePrivate* static_d = 0;
00038 
00039 class KWinModulePrivate : public QWidget, public NETRootInfo
00040 {
00041 public:
00042     KWinModulePrivate(int _what)
00043     : QWidget(0,0), NETRootInfo( qt_xdisplay(),
00044                      ( _what >= KWinModule::INFO_WINDOWS ? 
00045                        (ClientList | ClientListStacking) : 0
00046                      ) |
00047                      NumberOfDesktops |
00048                      DesktopGeometry |
00049                      CurrentDesktop |
00050                      DesktopNames |
00051                      ActiveWindow |
00052                      WorkArea |
00053                      KDESystemTrayWindows,
00054                      -1, false
00055                      ),
00056           strutSignalConnected( false ),
00057           what( _what )
00058     {
00059     kapp->installX11EventFilter( this );
00060     (void ) kapp->desktop(); //trigger desktop widget creation to select root window events
00061         activate();
00062     updateStackingOrder();
00063     }
00064     ~KWinModulePrivate()
00065     {
00066     }
00067     QPtrList<KWinModule> modules;
00068 
00069     QValueList<WId> windows;
00070     QValueList<WId> stackingOrder;
00071     QValueList<WId> systemTrayWindows;
00072 
00073     struct StrutData
00074     {
00075         StrutData( WId window_, const NETStrut& strut_, int desktop_ )
00076             : window( window_ ), strut( strut_ ), desktop( desktop_ ) {};
00077         StrutData() {}; // for QValueList to be happy
00078         WId window;
00079         NETStrut strut;
00080         int desktop;
00081     };
00082     QValueList<StrutData> strutWindows;
00083     QValueList<WId> possibleStrutWindows;
00084     bool strutSignalConnected;
00085     int what;
00086 
00087     void addClient(Window);
00088     void removeClient(Window);
00089     void addSystemTrayWin(Window);
00090     void removeSystemTrayWin(Window);
00091 
00092     bool x11Event( XEvent * ev );
00093 
00094     void updateStackingOrder();
00095     bool removeStrutWindow( WId );
00096 };
00097 
00098 
00099 KWinModule::KWinModule( QObject* parent )
00100     : QObject( parent, "kwin_module" )
00101 {
00102     init(INFO_ALL);
00103 }
00104 
00105 KWinModule::KWinModule( QObject* parent, int what )
00106     : QObject( parent, "kwin_module" )
00107 {
00108     init(what);
00109 }
00110 
00111 void KWinModule::init(int what)
00112 {
00113     if (what >= INFO_WINDOWS)
00114        what = INFO_WINDOWS;
00115     else
00116        what = INFO_DESKTOP;
00117 
00118     if ( !static_d )
00119     {
00120         static_d = new KWinModulePrivate(what);
00121     }
00122     else if (static_d->what < what)
00123     {
00124         QPtrList<KWinModule> modules = static_d->modules;
00125         delete static_d;
00126         static_d = new KWinModulePrivate(what);
00127         static_d->modules = modules;
00128     }
00129     
00130     d = static_d;
00131     d->modules.append( this );
00132 }
00133 
00134 KWinModule::~KWinModule()
00135 {
00136     d->modules.removeRef( this );
00137     if ( d->modules.isEmpty() ) {
00138     delete d;
00139     static_d = 0;
00140     }
00141 }
00142 
00143 const QValueList<WId>& KWinModule::windows() const
00144 {
00145     return d->windows;
00146 }
00147 
00148 const QValueList<WId>& KWinModule::stackingOrder() const
00149 {
00150     return d->stackingOrder;
00151 }
00152 
00153 
00154 bool KWinModule::hasWId(WId w) const
00155 {
00156     return d->windows.contains( w );
00157 }
00158 
00159 const QValueList<WId>& KWinModule::systemTrayWindows() const
00160 {
00161     return d->systemTrayWindows;
00162 }
00163 
00164 bool KWinModulePrivate::x11Event( XEvent * ev )
00165 {
00166     if ( ev->xany.window == qt_xrootwin() ) {
00167     int m = NETRootInfo::event( ev );
00168 
00169     if ( m & CurrentDesktop )
00170         for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00171         emit (*mit)->currentDesktopChanged( currentDesktop() );
00172     if ( m & ActiveWindow )
00173         for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00174         emit (*mit)->activeWindowChanged( activeWindow() );
00175     if ( m & DesktopNames )
00176         for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00177         emit (*mit)->desktopNamesChanged();
00178     if ( m & NumberOfDesktops )
00179         for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00180         emit (*mit)->numberOfDesktopsChanged( numberOfDesktops() );
00181     if ( m & WorkArea )
00182         for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00183         emit (*mit)->workAreaChanged();
00184     if ( m & ClientListStacking ) {
00185         updateStackingOrder();
00186         for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00187         emit (*mit)->stackingOrderChanged();
00188     }
00189     } else  if ( windows.contains( ev->xany.window ) ){
00190     NETWinInfo ni( qt_xdisplay(), ev->xany.window, qt_xrootwin(), 0 );
00191         unsigned long dirty[ 2 ];
00192     ni.event( ev, dirty, 2 );
00193     if ( ev->type ==PropertyNotify ) {
00194             if( ev->xproperty.atom == XA_WM_HINTS )
00195             dirty[ NETWinInfo::PROTOCOLS ] |= NET::WMIcon; // support for old icons
00196             else if( ev->xproperty.atom == XA_WM_NAME )
00197                 dirty[ NETWinInfo::PROTOCOLS ] |= NET::WMName; // support for old name
00198             else if( ev->xproperty.atom == XA_WM_ICON_NAME )
00199                 dirty[ NETWinInfo::PROTOCOLS ] |= NET::WMIconName; // support for old iconic name
00200         }
00201     if ( (dirty[ NETWinInfo::PROTOCOLS ] & NET::WMStrut) != 0 ) {
00202             removeStrutWindow( ev->xany.window );
00203             if ( !possibleStrutWindows.contains( ev->xany.window )  )
00204             possibleStrutWindows.append( ev->xany.window );
00205     }
00206     if ( dirty[ NETWinInfo::PROTOCOLS ] || dirty[ NETWinInfo::PROTOCOLS2 ] ) {
00207         for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit ) {
00208         emit (*mit)->windowChanged( ev->xany.window );
00209                 emit (*mit)->windowChanged( ev->xany.window, dirty );
00210         emit (*mit)->windowChanged( ev->xany.window, dirty[ NETWinInfo::PROTOCOLS ] );
00211         if ( (dirty[ NETWinInfo::PROTOCOLS ] & NET::WMStrut) != 0 )
00212             emit (*mit)->strutChanged();
00213         }
00214     }
00215     }
00216 
00217     return false;
00218 }
00219 
00220 bool KWinModulePrivate::removeStrutWindow( WId w )
00221 {
00222     for( QValueList< StrutData >::Iterator it = strutWindows.begin();
00223          it != strutWindows.end();
00224          ++it )
00225         if( (*it).window == w ) {
00226             strutWindows.remove( it );
00227             return true;
00228         }
00229     return false;
00230 }
00231 
00232 void KWinModulePrivate::updateStackingOrder()
00233 {
00234     stackingOrder.clear();
00235     for ( int i = 0; i <  clientListStackingCount(); i++ )
00236     stackingOrder.append( clientListStacking()[i] );
00237 }
00238 
00239 void KWinModulePrivate::addClient(Window w)
00240 {
00241     if ( (what >= KWinModule::INFO_WINDOWS) && !QWidget::find( w ) )
00242     XSelectInput( qt_xdisplay(), w, PropertyChangeMask | StructureNotifyMask );
00243     bool emit_strutChanged = false;
00244     if( strutSignalConnected && modules.count() > 0 ) {
00245         NETWinInfo info( qt_xdisplay(), w, qt_xrootwin(), NET::WMStrut | NET::WMDesktop );
00246         NETStrut strut = info.strut();
00247         if ( strut.left || strut.top || strut.right || strut.bottom ) {
00248             strutWindows.append( StrutData( w, strut, info.desktop()));
00249             emit_strutChanged = true;
00250         }
00251     } else
00252         possibleStrutWindows.append( w );
00253     windows.append( w );
00254     for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit ) {
00255     emit (*mit)->windowAdded( w );
00256     if ( emit_strutChanged )
00257         emit (*mit)->strutChanged();
00258     }
00259 }
00260 
00261 void KWinModulePrivate::removeClient(Window w)
00262 {
00263     bool emit_strutChanged = removeStrutWindow( w );
00264     if( strutSignalConnected && possibleStrutWindows.contains( w ) && modules.count() > 0 ) {
00265         NETWinInfo info( qt_xdisplay(), w, qt_xrootwin(), NET::WMStrut );
00266         NETStrut strut = info.strut();
00267         if ( strut.left || strut.top || strut.right || strut.bottom ) {
00268             emit_strutChanged = true;
00269         }
00270     }
00271     possibleStrutWindows.remove( w );
00272     windows.remove( w );
00273     for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit ) {
00274     emit (*mit)->windowRemoved( w );
00275     if ( emit_strutChanged )
00276         emit (*mit)->strutChanged();
00277     }
00278 }
00279 
00280 void KWinModulePrivate::addSystemTrayWin(Window w)
00281 {
00282     systemTrayWindows.append( w );
00283     for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00284     emit (*mit)->systemTrayWindowAdded( w );
00285 }
00286 
00287 void KWinModulePrivate::removeSystemTrayWin(Window w)
00288 {
00289     systemTrayWindows.remove( w );
00290     for ( QPtrListIterator<KWinModule> mit( modules ); mit.current(); ++mit )
00291     emit (*mit)->systemTrayWindowRemoved( w );
00292 }
00293 
00294 int KWinModule::currentDesktop() const
00295 {
00296     return d->currentDesktop();
00297 }
00298 
00299 int KWinModule::numberOfDesktops() const
00300 {
00301     return d->numberOfDesktops();
00302 }
00303 
00304 WId KWinModule::activeWindow() const
00305 {
00306     return d->activeWindow();
00307 }
00308 
00309 QRect KWinModule::workArea( int desktop ) const
00310 {
00311     int desk  = (desktop > 0 && desktop <= (int) d->numberOfDesktops() ) ? desktop : currentDesktop();
00312     if ( desk <= 0 )
00313     return QApplication::desktop()->geometry();
00314     NETRect r = d->workArea( desk );
00315     return QRect( r.pos.x, r.pos.y, r.size.width, r.size.height );
00316 }
00317 
00318 QRect KWinModule::workArea( const QValueList<WId>& exclude, int desktop ) const
00319 {
00320     QRect all = QApplication::desktop()->geometry();
00321     QRect a = all;
00322 
00323     if (desktop == -1)
00324     desktop = d->currentDesktop();
00325 
00326     QValueList<WId>::ConstIterator it1;
00327     for( it1 = d->windows.begin(); it1 != d->windows.end(); ++it1 ) {
00328 
00329     if(exclude.contains(*it1) > 0) continue;
00330         
00331 // Kicker (very) extensively calls this function, causing hundreds of roundtrips just
00332 // to repeatedly find out struts of all windows. Therefore strut values for strut
00333 // windows are cached here.
00334         NETStrut strut;
00335         QValueList< KWinModulePrivate::StrutData >::Iterator it2 = d->strutWindows.begin();
00336         for( ;
00337              it2 != d->strutWindows.end();
00338              ++it2 )
00339             if( (*it2).window == *it1 )
00340                 break;
00341         if( it2 != d->strutWindows.end()) {
00342             if(!((*it2).desktop == desktop || (*it2).desktop == NETWinInfo::OnAllDesktops ))
00343                 continue;
00344             strut = (*it2).strut;
00345         } else if( d->possibleStrutWindows.contains( *it1 )) {
00346             NETWinInfo info( qt_xdisplay(), (*it1), qt_xrootwin(), NET::WMStrut | NET::WMDesktop);
00347         strut = info.strut();
00348             d->possibleStrutWindows.remove( *it1 );
00349             d->strutWindows.append( KWinModulePrivate::StrutData( *it1, info.strut(), info.desktop()));
00350         if(!(info.desktop() == desktop || info.desktop() == NETWinInfo::OnAllDesktops))
00351                 continue;
00352         } else
00353             continue; // not a strut window
00354 
00355     QRect r = all;
00356     if ( strut.left > 0 )
00357         r.setLeft( r.left() + (int) strut.left );
00358     if ( strut.top > 0 )
00359         r.setTop( r.top() + (int) strut.top );
00360     if ( strut.right > 0  )
00361         r.setRight( r.right() - (int) strut.right );
00362     if ( strut.bottom > 0  )
00363         r.setBottom( r.bottom() - (int) strut.bottom );
00364 
00365     a = a.intersect(r);
00366     }
00367     return a;
00368 }
00369 
00370 void KWinModule::connectNotify( const char* signal )
00371 {
00372     if( !d->strutSignalConnected && qstrcmp( signal, SIGNAL(strutChanged())) == 0 )
00373         d->strutSignalConnected = true;
00374     QObject::connectNotify( signal );
00375 }
00376 
00377 QString KWinModule::desktopName( int desktop ) const
00378 {
00379     const char* name = d->desktopName( (desktop > 0 && desktop <= (int) d->numberOfDesktops() ) ? desktop : currentDesktop() );
00380     if ( name && name[0] )
00381     return QString::fromUtf8( name );
00382     return i18n("Desktop %1").arg( desktop );
00383 }
00384 
00385 void KWinModule::setDesktopName( int desktop, const QString& name )
00386 {
00387     if (desktop <= 0 || desktop > (int) d->numberOfDesktops() )
00388     desktop = currentDesktop();
00389     d->setDesktopName( desktop, name.utf8().data() );
00390 }
00391 
00392 
00393 void KWinModule::doNotManage( const QString& title )
00394 {
00395     if ( !kapp->dcopClient()->isAttached() )
00396     kapp->dcopClient()->attach();
00397     QByteArray data, replyData;
00398     QCString replyType;
00399     QDataStream arg(data, IO_WriteOnly);
00400     arg << title;
00401     kapp->dcopClient()->call("kwin", "", "doNotManage(QString)",
00402                  data, replyType, replyData);
00403 }
00404 
00405 #include "kwinmodule.moc"
00406 #endif
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