Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 986 insertions, 0 deletions

diff --git a/kdesktop/desktop.cc b/kdesktop/desktop.cc
new file mode 100644
index 000000000..6e2b1e9c0
--- /dev/null
+++ b/kdesktop/desktop.cc
@@ -0,0 +1,986 @@
+/* This file is part of the KDE project
+   Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+
+#include "desktop.h"
+#include "krootwm.h"
+#include "bgmanager.h"
+#include "bgsettings.h"
+#include "startupid.h"
+#include "kdiconview.h"
+#include "minicli.h"
+#include "kdesktopsettings.h"
+#include "klaunchsettings.h"
+
+#include <string.h>
+#include <unistd.h>
+#include <kcolordrag.h>
+#include <kurldrag.h>
+
+#include <qdir.h>
+#include <qevent.h>
+#include <qtooltip.h>
+
+#include <netwm.h>
+#include <dcopclient.h>
+#include <kcursor.h>
+#include <kdebug.h>
+#include <kstandarddirs.h>
+#include <kimageio.h>
+#include <kinputdialog.h>
+#include <kipc.h>
+#include <klocale.h>
+#include <kio/netaccess.h>
+#include <kprocess.h>
+#include <ksycoca.h>
+#include <ktempfile.h>
+#include <kmessagebox.h>
+#include <kglobalaccel.h>
+#include <kwinmodule.h>
+#include <krun.h>
+#include <kwin.h>
+#include <kglobalsettings.h>
+#include <kpopupmenu.h>
+#include <kapplication.h>
+// Create the equivalent of KAccelBase::connectItem
+// and then remove this include and fix reconnects in initRoot() -- ellis
+//#include <kaccelbase.h>
+
+extern int kdesktop_screen_number;
+extern QCString kdesktop_name, kicker_name, kwin_name;
+
+KRootWidget::KRootWidget() : QObject()
+{
+     kapp->desktop()->installEventFilter(this);
+     kapp->desktop()->setAcceptDrops( true );
+}
+
+bool KRootWidget::eventFilter ( QObject *, QEvent * e )
+{
+     if (e->type() == QEvent::MouseButtonPress)
+     {
+       QMouseEvent *me = static_cast<QMouseEvent *>(e);
+       KRootWm::self()->mousePressed( me->globalPos(), me->button() );
+       return true;
+     }
+     else if (e->type() == QEvent::Wheel)
+     {
+       QWheelEvent *we = static_cast<QWheelEvent *>(e);
+       emit wheelRolled(we->delta());
+       return true;
+     }
+     else if ( e->type() == QEvent::DragEnter )
+     {
+       QDragEnterEvent* de = static_cast<QDragEnterEvent *>( e );
+       bool b = !KGlobal::config()->isImmutable() && !KGlobal::dirs()->isRestrictedResource( "wallpaper" );
+
+       bool imageURL = false;
+       if ( KURLDrag::canDecode( de ) )
+       {
+         KURL::List list;
+         KURLDrag::decode( de, list );
+         KURL url = list.first();
+         KMimeType::Ptr mime = KMimeType::findByURL( url );
+         if ( !KImageIO::type( url.path() ).isEmpty() ||
+              KImageIO::isSupported( mime->name(), KImageIO::Reading ) || mime->is( "image/svg+xml" ) )
+           imageURL = true;
+       }
+
+       b = b && ( KColorDrag::canDecode( de ) || QImageDrag::canDecode( de ) || imageURL );
+       de->accept( b );
+       return true;
+     }
+     else if ( e->type() == QEvent::Drop )
+     {
+       QDropEvent* de = static_cast<QDropEvent*>( e );
+       if ( KColorDrag::canDecode( de ) ) 
+         emit colorDropEvent( de );
+       else if ( QImageDrag::canDecode( de ) )
+         emit imageDropEvent( de );
+       else if ( KURLDrag::canDecode( de ) ) {
+	 KURL::List list;
+         KURLDrag::decode( de, list );
+         KURL url = list.first();
+         emit newWallpaper( url );
+       }
+       return true;
+     }
+     return false; // Don't filter.
+}
+
+// -----------------------------------------------------------------------------
+#define DEFAULT_DELETEACTION 1
+
+KDesktop::WheelDirection KDesktop::m_eWheelDirection = KDesktop::m_eDefaultWheelDirection;
+const char* KDesktop::m_wheelDirectionStrings[2] = { "Forward", "Reverse" };
+
+KDesktop::KDesktop( bool x_root_hack, bool wait_for_kded ) :
+    DCOPObject( "KDesktopIface" ),
+    QWidget( 0L, "desktop", WResizeNoErase | ( x_root_hack ? (WStyle_Customize | WStyle_NoBorder) : 0) ),
+    // those two WStyle_ break kdesktop when the root-hack isn't used (no Dnd)
+   startup_id( NULL ), m_waitForKicker(0)
+{
+  m_bWaitForKded = wait_for_kded;
+  m_miniCli = 0; // created on demand
+  keys = 0; // created later
+  KGlobal::locale()->insertCatalogue("kdesktop");
+  KGlobal::locale()->insertCatalogue("libkonq"); // needed for apps using libkonq
+  KGlobal::locale()->insertCatalogue("libdmctl");
+
+  setCaption( "KDE Desktop");
+
+  setAcceptDrops(true); // WStyle_Customize seems to disable that
+  m_pKwinmodule = new KWinModule( this );
+
+  kapp->dcopClient()->setNotifications(true);
+  kapp->dcopClient()->connectDCOPSignal(kicker_name, kicker_name, "desktopIconsAreaChanged(QRect, int)",
+                                        "KDesktopIface", "desktopIconsAreaChanged(QRect, int)", false);
+
+  // Dont repaint on configuration changes during construction
+  m_bInit = true;
+
+  // It's the child widget that gets the focus, not us
+  setFocusPolicy( NoFocus );
+
+  if ( x_root_hack )
+  {
+    // this is a ugly hack to make Dnd work
+    // Matthias told me that it won't be necessary with kwin
+    // actually my first try with ICCCM (Dirk) :-)
+    unsigned long data[2];
+    data[0] = (unsigned long) 1;
+    data[1] = (unsigned long) 0; // None; (Werner)
+    Atom wm_state = XInternAtom(qt_xdisplay(), "WM_STATE", False);
+    XChangeProperty(qt_xdisplay(), winId(), wm_state, wm_state, 32,
+                    PropModeReplace, (unsigned char *)data, 2);
+
+  }
+
+  setGeometry( QApplication::desktop()->geometry() );
+  lower();
+
+  connect( kapp, SIGNAL( shutDown() ),
+           this, SLOT( slotShutdown() ) );
+
+  connect(kapp, SIGNAL(settingsChanged(int)),
+          this, SLOT(slotSettingsChanged(int)));
+  kapp->addKipcEventMask(KIPC::SettingsChanged);
+
+  kapp->addKipcEventMask(KIPC::IconChanged);
+  connect(kapp, SIGNAL(iconChanged(int)), this, SLOT(slotIconChanged(int)));
+
+  connect(KSycoca::self(), SIGNAL(databaseChanged()),
+          this, SLOT(slotDatabaseChanged()));
+
+  m_pIconView = 0;
+  m_pRootWidget = 0;
+  bgMgr = 0;
+  initRoot();
+
+  QTimer::singleShot(0, this, SLOT( slotStart() ));
+
+#if (QT_VERSION-0 >= 0x030200) // XRANDR support
+  connect( kapp->desktop(), SIGNAL( resized( int )), SLOT( desktopResized()));
+#endif
+}
+
+void
+KDesktop::initRoot()
+{
+  Display *dpy = qt_xdisplay();
+  Window root = RootWindow(dpy, kdesktop_screen_number);
+  XDefineCursor(dpy, root, cursor().handle());
+  
+  m_bDesktopEnabled = KDesktopSettings::desktopEnabled();
+  if ( !m_bDesktopEnabled && !m_pRootWidget )
+  {
+     hide();
+     delete bgMgr;
+     bgMgr = 0;
+     if ( m_pIconView )
+        m_pIconView->saveIconPositions();
+     delete m_pIconView;
+     m_pIconView = 0;
+
+     { // trigger creation of QToolTipManager, it does XSelectInput() on the root window
+     QWidget w;
+     QToolTip::add( &w, "foo" );
+     }
+     // NOTE: If mouse clicks stop working again, it's most probably something doing XSelectInput()
+     // on the root window after this, and setting it to some fixed value instead of adding its mask.
+     XWindowAttributes attrs;
+     XGetWindowAttributes(dpy, root, &attrs);
+     XSelectInput(dpy, root, attrs.your_event_mask | ButtonPressMask);
+
+     m_pRootWidget = new KRootWidget;
+     connect(m_pRootWidget, SIGNAL(wheelRolled(int)), this, SLOT(slotSwitchDesktops(int)));
+     connect(m_pRootWidget, SIGNAL(colorDropEvent(QDropEvent*)), this, SLOT(handleColorDropEvent(QDropEvent*)) );
+     connect(m_pRootWidget, SIGNAL(imageDropEvent(QDropEvent*)), this, SLOT(handleImageDropEvent(QDropEvent*)) );
+     connect(m_pRootWidget, SIGNAL(newWallpaper(const KURL&)), this, SLOT(slotNewWallpaper(const KURL&)) );
+
+     // Geert Jansen: backgroundmanager belongs here
+     // TODO tell KBackgroundManager if we change widget()
+     bgMgr = new KBackgroundManager( m_pIconView, m_pKwinmodule );
+     bgMgr->setExport(1);
+     connect( bgMgr, SIGNAL( initDone()), SLOT( backgroundInitDone()));
+     if (!m_bInit)
+     {
+        delete KRootWm::self();
+        KRootWm* krootwm = new KRootWm( this ); // handler for root menu (used by kdesktop on RMB click)
+        keys->setSlot("Lock Session", krootwm, SLOT(slotLock()));
+        keys->updateConnections();
+     }
+  }
+  else if (m_bDesktopEnabled && !m_pIconView)
+  {
+     delete bgMgr;
+     bgMgr = 0;
+     delete m_pRootWidget;
+     m_pRootWidget = 0;
+     m_pIconView = new KDIconView( this, 0 );
+     connect( m_pIconView, SIGNAL( imageDropEvent( QDropEvent * ) ),
+              this, SLOT( handleImageDropEvent( QDropEvent * ) ) );
+     connect( m_pIconView, SIGNAL( colorDropEvent( QDropEvent * ) ),
+              this, SLOT( handleColorDropEvent( QDropEvent * ) ) );
+     connect( m_pIconView, SIGNAL( newWallpaper( const KURL & ) ),
+              this, SLOT( slotNewWallpaper( const KURL & ) ) );
+     connect( m_pIconView, SIGNAL( wheelRolled( int ) ),
+              this, SLOT( slotSwitchDesktops( int ) ) );
+
+     // All the QScrollView/QWidget-specific stuff should go here, so that we can use
+     // another qscrollview/widget instead of the iconview and use the same code
+     m_pIconView->setVScrollBarMode( QScrollView::AlwaysOff );
+     m_pIconView->setHScrollBarMode( QScrollView::AlwaysOff );
+     m_pIconView->setDragAutoScroll( false );
+     m_pIconView->setFrameStyle( QFrame::NoFrame );
+     m_pIconView->viewport()->setBackgroundMode( X11ParentRelative );
+     m_pIconView->setFocusPolicy( StrongFocus );
+     m_pIconView->viewport()->setFocusPolicy( StrongFocus );
+     m_pIconView->setGeometry( geometry() );
+     m_pIconView->show();
+
+     // Geert Jansen: backgroundmanager belongs here
+     // TODO tell KBackgroundManager if we change widget()
+     bgMgr = new KBackgroundManager( m_pIconView, m_pKwinmodule );
+     bgMgr->setExport(1);
+     connect( bgMgr, SIGNAL( initDone()), SLOT( backgroundInitDone()));
+
+     // make sure it is initialized before we first call updateWorkArea()
+     m_pIconView->initConfig( m_bInit );
+
+     // set the size of the area for desktop icons placement
+     {
+        QByteArray data, result;
+        QDataStream arg(data, IO_WriteOnly);
+        arg << kdesktop_screen_number;
+        QCString replyType;
+        QRect area;
+
+        if ( kapp->dcopClient()->call(kicker_name, kicker_name, "desktopIconsArea(int)",
+                                       data, replyType, result, false, 2000) )
+        {
+          QDataStream res(result, IO_ReadOnly);
+          res >> area;
+
+          m_pIconView->updateWorkArea(area);
+        }
+        else
+          if ( m_bInit )
+          {
+            // if we failed to get the information from kicker wait a little - probably
+            // this is the KDE startup and kicker is simply not running yet
+            m_waitForKicker = new QTimer(this);
+            connect(m_waitForKicker, SIGNAL(timeout()), this, SLOT(slotNoKicker()));
+            m_waitForKicker->start(15000, true);
+          }
+          else  // we are not called from the ctor, so kicker should already run
+          {
+            area = kwinModule()->workArea(kwinModule()->currentDesktop());
+            m_pIconView->updateWorkArea(area);
+          }
+     }
+
+     if (!m_bInit)
+     {
+        m_pIconView->start();
+        delete KRootWm::self();
+        KRootWm* krootwm = new KRootWm( this ); // handler for root menu (used by kdesktop on RMB click)
+        keys->setSlot("Lock Session", krootwm, SLOT(slotLock()));
+        keys->updateConnections();
+     }
+   } else {
+     DCOPRef r( "ksmserver", "ksmserver" );
+     r.send( "resumeStartup", QCString( "kdesktop" ));
+   }
+
+   KWin::setType( winId(), NET::Desktop );
+   KWin::setState( winId(), NET::SkipPager );
+   KWin::setOnAllDesktops( winId(), true );
+}
+
+void KDesktop::slotNoKicker()
+{
+    kdDebug(1204) << "KDesktop::slotNoKicker ... kicker did not respond" << endl;
+    // up till now, we got no desktopIconsArea from kicker - probably
+    // it's not running, so use the area from KWinModule
+    m_pIconView->updateWorkArea(kwinModule()->workArea(kwinModule()->currentDesktop()));
+}
+
+void
+KDesktop::backgroundInitDone()
+{
+    //kdDebug(1204) << "KDesktop::backgroundInitDone" << endl;
+    // avoid flicker
+    if (m_bDesktopEnabled)
+    {
+       const QPixmap *bg = QApplication::desktop()->screen()->backgroundPixmap();
+       if ( bg )
+          m_pIconView->setErasePixmap( *bg );
+
+       show();
+       kapp->sendPostedEvents();
+    }
+
+    DCOPRef r( "ksmserver", "ksmserver" );
+    r.send( "resumeStartup", QCString( "kdesktop" ));
+}
+
+void
+KDesktop::slotStart()
+{
+  //kdDebug(1204) << "KDesktop::slotStart" << endl;
+  if (!m_bInit) return;
+
+  // In case we started without database
+  KImageIO::registerFormats();
+
+  initConfig();
+
+//   if (m_bDesktopEnabled)
+//   {
+//      // We need to be visible in order to insert icons, even if the background isn't ready yet...
+
+//      show();
+//   }
+
+  // Now we may react to configuration changes
+  m_bInit = false;
+
+  if (m_pIconView)
+     m_pIconView->start();
+
+  // Global keys
+  keys = new KGlobalAccel( this );
+  (void) new KRootWm( this );
+
+#include "kdesktopbindings.cpp"
+
+  keys->readSettings();
+  keys->updateConnections();
+
+  connect(kapp, SIGNAL(appearanceChanged()), SLOT(slotConfigure()));
+
+  QTimer::singleShot(300, this, SLOT( slotUpAndRunning() ));
+}
+
+void
+KDesktop::runAutoStart()
+{
+     // now let's execute all the stuff in the autostart folder.
+     // the stuff will actually be really executed when the event loop is
+     // entered, since KRun internally uses a QTimer
+     QDir dir( KGlobalSettings::autostartPath() );
+     QStringList entries = dir.entryList( QDir::Files );
+     QStringList::Iterator it = entries.begin();
+     QStringList::Iterator end = entries.end();
+     for (; it != end; ++it )
+     {
+            // Don't execute backup files
+            if ( (*it).right(1) != "~" && (*it).right(4) != ".bak" &&
+                 ( (*it)[0] != '%' || (*it).right(1) != "%" ) &&
+                 ( (*it)[0] != '#' || (*it).right(1) != "#" ) )
+            {
+                KURL url;
+                url.setPath( dir.absPath() + '/' + (*it) );
+                (void) new KRun( url, 0, true );
+            }
+     }
+}
+
+// -----------------------------------------------------------------------------
+
+KDesktop::~KDesktop()
+{
+  delete m_miniCli;
+  m_miniCli = 0; // see #120382
+  delete bgMgr;
+  bgMgr = 0;
+  delete startup_id;
+}
+
+// -----------------------------------------------------------------------------
+
+void KDesktop::initConfig()
+{
+    if (m_pIconView)
+       m_pIconView->initConfig( m_bInit );
+
+    if ( keys )
+    {
+        keys->readSettings();
+        keys->updateConnections();
+    }
+
+    KLaunchSettings::self()->readConfig();
+    if( !KLaunchSettings::busyCursor() )
+    {
+        delete startup_id;
+        startup_id = NULL;
+    }
+    else
+    {
+        if( startup_id == NULL )
+            startup_id = new StartupId;
+        startup_id->configure();
+    }
+
+    set_vroot = KDesktopSettings::setVRoot();
+    slotSetVRoot(); // start timer
+
+    m_bWheelSwitchesWorkspace = KDesktopSettings::wheelSwitchesWorkspace();
+
+    const char* forward_string = m_wheelDirectionStrings[Forward];
+    m_eWheelDirection =
+        (KDesktopSettings::wheelDirection() == forward_string) ? Forward : Reverse;
+}
+
+// -----------------------------------------------------------------------------
+
+void KDesktop::slotExecuteCommand()
+{
+    // this function needs to be duplicated since it appears that one
+    // cannot have a 'slot' be a DCOP method.  if this changes in the
+    // future, then 'slotExecuteCommand' and 'popupExecuteCommand' can
+    // merge into one slot.
+    popupExecuteCommand();
+}
+
+/*
+  Shows minicli
+ */
+void KDesktop::popupExecuteCommand()
+{
+  popupExecuteCommand("");
+}
+
+void KDesktop::popupExecuteCommand(const QString& command)
+{
+  if (m_bInit)
+      return;
+
+  if (!kapp->authorize("run_command"))
+      return;
+
+  // Created on demand
+  if ( !m_miniCli )
+  {
+      m_miniCli = new Minicli( this );
+      m_miniCli->adjustSize(); // for the centering below
+  }
+
+  if (!command.isEmpty())
+      m_miniCli->setCommand(command);
+
+  // Move minicli to the current desktop
+  NETWinInfo info( qt_xdisplay(), m_miniCli->winId(), qt_xrootwin(), NET::WMDesktop );
+  int currentDesktop = kwinModule()->currentDesktop();
+  if ( info.desktop() != currentDesktop )
+      info.setDesktop( currentDesktop );
+
+  if ( m_miniCli->isVisible() ) {
+      KWin::forceActiveWindow( m_miniCli->winId() );
+  } else {
+      QRect rect = KGlobalSettings::desktopGeometry(QCursor::pos());
+      m_miniCli->move(rect.x() + (rect.width() - m_miniCli->width())/2,
+                      rect.y() + (rect.height() - m_miniCli->height())/2);
+      m_miniCli->show(); // non-modal
+  }
+}
+
+void KDesktop::slotSwitchUser()
+{
+     KRootWm::self()->slotSwitchUser();
+}
+
+void KDesktop::slotShowWindowList()
+{
+     KRootWm::self()->slotWindowList();
+}
+
+void KDesktop::slotShowTaskManager()
+{
+    //kdDebug(1204) << "Launching KSysGuard..." << endl;
+    KProcess* p = new KProcess;
+    Q_CHECK_PTR(p);
+
+    *p << "ksysguard";
+    *p << "--showprocesses";
+
+    p->start(KProcess::DontCare);
+
+    delete p;
+}
+
+// -----------------------------------------------------------------------------
+
+void KDesktop::rearrangeIcons()
+{
+    if (m_pIconView)
+        m_pIconView->rearrangeIcons();
+}
+
+void KDesktop::lineupIcons()
+{
+    if (m_pIconView)
+        m_pIconView->lineupIcons();
+}
+
+void KDesktop::selectAll()
+{
+    if (m_pIconView)
+        m_pIconView->selectAll( true );
+}
+
+void KDesktop::unselectAll()
+{
+    if (m_pIconView)
+        m_pIconView->selectAll( false );
+}
+
+QStringList KDesktop::selectedURLs()
+{
+    if (m_pIconView)
+        return m_pIconView->selectedURLs();
+    return QStringList();
+}
+
+void KDesktop::refreshIcons()
+{
+    if (m_pIconView)
+        m_pIconView->refreshIcons();
+}
+
+KActionCollection * KDesktop::actionCollection()
+{
+    if (!m_pIconView)
+       return 0;
+    return m_pIconView->actionCollection();
+}
+
+KURL KDesktop::url() const
+{
+    if (m_pIconView)
+        return m_pIconView->url();
+    return KURL();
+}
+
+// -----------------------------------------------------------------------------
+
+void KDesktop::slotConfigure()
+{
+    configure();
+}
+
+void KDesktop::configure()
+{
+    // re-read configuration and apply it
+    KGlobal::config()->reparseConfiguration();
+    KDesktopSettings::self()->readConfig();
+
+    // If we have done start() already, then re-configure.
+    // Otherwise, start() will call initConfig anyway
+    if (!m_bInit)
+    {
+       initRoot();
+       initConfig();
+       KRootWm::self()->initConfig();
+    }
+
+    if (keys)
+    {
+       keys->readSettings();
+       keys->updateConnections();
+    }
+}
+
+void KDesktop::slotSettingsChanged(int category)
+{
+    //kdDebug(1204) << "KDesktop::slotSettingsChanged" << endl;
+    if (category == KApplication::SETTINGS_PATHS)
+    {
+        kdDebug(1204) << "KDesktop::slotSettingsChanged SETTINGS_PATHS" << endl;
+        if (m_pIconView)
+            m_pIconView->recheckDesktopURL();
+    }
+    else if (category == KApplication::SETTINGS_SHORTCUTS)
+    {
+        kdDebug(1204) << "KDesktop::slotSettingsChanged SETTINGS_SHORTCUTS" << endl;
+        keys->readSettings();
+        keys->updateConnections();
+    }
+}
+
+void KDesktop::slotIconChanged(int group)
+{
+    if ( group == KIcon::Desktop )
+    {
+        kdDebug(1204) << "KDesktop::slotIconChanged" << endl;
+        refresh();
+    }
+}
+
+void KDesktop::slotDatabaseChanged()
+{
+    //kdDebug(1204) << "KDesktop::slotDatabaseChanged" << endl;
+    if (m_bInit) // kded is done, now we can "start" for real
+        slotStart();
+    if (m_pIconView && KSycoca::isChanged("mimetypes"))
+        m_pIconView->refreshMimeTypes();
+}
+
+void KDesktop::refresh()
+{
+  // George Staikos 3/14/01
+  // This bit will just refresh the desktop and icons.  Now I have code
+  // in KWin to do a complete refresh so this isn't really needed.
+  // I'll leave it in here incase the plan is changed again
+#if 0
+  m_bNeedRepaint |= 1;
+  updateWorkArea();
+#endif
+  kapp->dcopClient()->send( kwin_name, "", "refresh()", "");
+  refreshIcons();
+}
+
+// -----------------------------------------------------------------------------
+
+void KDesktop::slotSetVRoot()
+{
+    if (!m_pIconView)
+        return;
+
+    if (KWin::windowInfo(winId()).mappingState() == NET::Withdrawn) {
+        QTimer::singleShot(100, this, SLOT(slotSetVRoot()));
+        return;
+    }
+
+    unsigned long rw = RootWindowOfScreen(ScreenOfDisplay(qt_xdisplay(), qt_xscreen()));
+    unsigned long vroot_data[1] = { m_pIconView->viewport()->winId() };
+    static Atom vroot = XInternAtom(qt_xdisplay(), "__SWM_VROOT", False);
+
+    Window rootReturn, parentReturn, *children;
+    unsigned int numChildren;
+    Window top = winId();
+    while (1) {
+        /*int ret = */XQueryTree(qt_xdisplay(), top , &rootReturn, &parentReturn,
+                                 &children, &numChildren);
+        if (children)
+            XFree((char *)children);
+        if (parentReturn == rw) {
+            break;
+        } else
+            top = parentReturn;
+    }
+    if ( set_vroot )
+        XChangeProperty(qt_xdisplay(), top, vroot, XA_WINDOW, 32,
+                        PropModeReplace, (unsigned char *)vroot_data, 1);
+    else
+        XDeleteProperty (qt_xdisplay(), top, vroot);
+}
+
+// -----------------------------------------------------------------------------
+
+void KDesktop::slotShutdown()
+{
+    if ( m_pIconView )
+        m_pIconView->saveIconPositions();
+    if ( m_miniCli )
+        m_miniCli->saveConfig();
+}
+
+// don't hide when someone presses Alt-F4 on us
+void KDesktop::closeEvent(QCloseEvent *e)
+{
+    e->ignore();
+}
+
+void KDesktop::desktopIconsAreaChanged(const QRect &area, int screen)
+{
+    // hurra! kicker is alive
+    if ( m_waitForKicker ) m_waitForKicker->stop();
+
+    // -2: all screens
+    // -1: primary screen
+    // else: screen number
+
+    if (screen <= -2)
+       screen = kdesktop_screen_number;
+    else if (screen == -1)
+       screen = kapp->desktop()->primaryScreen();
+
+    // This is pretty broken, mixes Xinerama and non-Xinerama multihead
+    // and generally doesn't seem to be required anyway => ignore screen.
+    if ( /*(screen == kdesktop_screen_number) &&*/ m_pIconView )
+        m_pIconView->updateWorkArea(area);
+}
+
+void KDesktop::slotSwitchDesktops(int delta)
+{
+    if(m_bWheelSwitchesWorkspace && KWin::numberOfDesktops() > 1)
+    {
+      int newDesk, curDesk = KWin::currentDesktop();
+
+      if( (delta < 0 && m_eWheelDirection == Forward) || (delta > 0 && m_eWheelDirection == Reverse) )
+        newDesk = curDesk % KWin::numberOfDesktops() + 1;
+      else
+        newDesk = ( KWin::numberOfDesktops() + curDesk - 2 ) % KWin::numberOfDesktops() + 1;
+
+      KWin::setCurrentDesktop( newDesk );
+    }
+}
+
+void KDesktop::handleColorDropEvent(QDropEvent * e)
+{
+    KPopupMenu popup;
+    popup.insertItem(SmallIconSet("colors"),i18n("Set as Primary Background Color"), 1);
+    popup.insertItem(SmallIconSet("colors"),i18n("Set as Secondary Background Color"), 2);
+    int result = popup.exec(e->pos());
+
+    QColor c;
+    KColorDrag::decode(e, c);
+    switch (result) {
+      case 1: bgMgr->setColor(c, true); break;
+      case 2: bgMgr->setColor(c, false); break;
+      default: return;
+    }
+    bgMgr->setWallpaper(0,0);
+}
+
+void KDesktop::handleImageDropEvent(QDropEvent * e)
+{
+    KPopupMenu popup;
+    if ( m_pIconView )
+    popup.insertItem(SmallIconSet("filesave"),i18n("&Save to Desktop..."), 1);
+    if ( ( m_pIconView && m_pIconView->maySetWallpaper() ) || m_pRootWidget )
+       popup.insertItem(SmallIconSet("background"),i18n("Set as &Wallpaper"), 2);
+    popup.insertSeparator();
+    popup.insertItem(SmallIconSet("cancel"), i18n("&Cancel"));
+    int result = popup.exec(e->pos());
+
+    if (result == 1)
+    {
+        bool ok = true;
+        QString filename = KInputDialog::getText(QString::null, i18n("Enter a name for the image below:"), QString::null, &ok, m_pIconView);
+
+        if (!ok)
+        {
+            return;
+        }
+
+        if (filename.isEmpty())
+        {
+            filename = i18n("image.png");
+        }
+        else if (filename.right(4).lower() != ".png")
+        {
+            filename += ".png";
+        }
+
+        QImage i;
+        QImageDrag::decode(e, i);
+        KTempFile tmpFile(QString::null, filename);
+        i.save(tmpFile.name(), "PNG");
+        // We pass 0 as parent window because passing the desktop is not a good idea
+        KURL src;
+        src.setPath( tmpFile.name() );
+        KURL dest( KDIconView::desktopURL() );
+        dest.addPath( filename );
+        KIO::NetAccess::copy( src, dest, 0 );
+        tmpFile.unlink();
+    }
+    else if (result == 2)
+    {
+        QImage i;
+        QImageDrag::decode(e, i);
+        KTempFile tmpFile(KGlobal::dirs()->saveLocation("wallpaper"), ".png");
+        i.save(tmpFile.name(), "PNG");
+        kdDebug(1204) << "KDesktop::contentsDropEvent " << tmpFile.name() << endl;
+        bgMgr->setWallpaper(tmpFile.name());
+    }
+}
+
+void KDesktop::slotNewWallpaper(const KURL &url)
+{
+    // This is called when a file containing an image is dropped
+    // (called by KonqOperations)
+    if ( url.isLocalFile() )
+        bgMgr->setWallpaper( url.path() );
+    else
+    {
+        // Figure out extension
+        QString fileName = url.fileName();
+        QFileInfo fileInfo( fileName );
+        QString ext = fileInfo.extension();
+        // Store tempfile in a place where it will still be available after a reboot
+        KTempFile tmpFile( KGlobal::dirs()->saveLocation("wallpaper"), "." + ext );
+        KURL localURL; localURL.setPath( tmpFile.name() );
+        // We pass 0 as parent window because passing the desktop is not a good idea
+        KIO::NetAccess::file_copy( url, localURL, -1, true /*overwrite*/ );
+        bgMgr->setWallpaper( localURL.path() );
+    }
+}
+
+// for dcop interface backward compatibility
+void KDesktop::logout()
+{
+    logout( KApplication::ShutdownConfirmDefault,
+            KApplication::ShutdownTypeNone );
+}
+
+void KDesktop::logout( KApplication::ShutdownConfirm confirm,
+                       KApplication::ShutdownType sdtype )
+{
+    if( !kapp->requestShutDown( confirm, sdtype ) )
+        // this i18n string is also in kicker/applets/run/runapplet
+        KMessageBox::error( this, i18n("Could not log out properly.\nThe session manager cannot "
+                                        "be contacted. You can try to force a shutdown by pressing "
+                                        "Ctrl+Alt+Backspace; note, however, that your current session "
+                                        "will not be saved with a forced shutdown." ) );
+}
+
+void KDesktop::slotLogout()
+{
+    logout( KApplication::ShutdownConfirmDefault,
+            KApplication::ShutdownTypeDefault );
+}
+
+void KDesktop::slotLogoutNoCnf()
+{
+    logout( KApplication::ShutdownConfirmNo,
+            KApplication::ShutdownTypeNone );
+}
+
+void KDesktop::slotHaltNoCnf()
+{
+    logout( KApplication::ShutdownConfirmNo,
+            KApplication::ShutdownTypeHalt );
+}
+
+void KDesktop::slotRebootNoCnf()
+{
+    logout( KApplication::ShutdownConfirmNo,
+            KApplication::ShutdownTypeReboot );
+}
+
+void KDesktop::setVRoot( bool enable )
+{
+    if ( enable == set_vroot )
+        return;
+
+    set_vroot = enable;
+    kdDebug(1204) << "setVRoot " << enable << endl;
+    KDesktopSettings::setSetVRoot( set_vroot );
+    KDesktopSettings::writeConfig();
+    slotSetVRoot();
+}
+
+void KDesktop::clearCommandHistory()
+{
+    if ( m_miniCli )
+        m_miniCli->clearHistory();
+}
+
+void KDesktop::setIconsEnabled( bool enable )
+{
+    if ( enable == m_bDesktopEnabled )
+        return;
+
+    m_bDesktopEnabled = enable;
+    kdDebug(1204) << "setIcons " << enable << endl;
+    KDesktopSettings::setDesktopEnabled( m_bDesktopEnabled );
+    KDesktopSettings::writeConfig();
+    if (!enable) {
+        delete m_pIconView;
+        m_pIconView = 0;
+    }
+    configure();
+}
+
+void KDesktop::desktopResized()
+{
+    resize(kapp->desktop()->size());
+
+    if ( m_pIconView )
+    {
+        // the sequence of actions is important:
+        // remove all icons, resize desktop, tell kdiconview new iconsArea size
+        // tell kdiconview to reget all icons
+        m_pIconView->slotClear();
+        m_pIconView->resize(kapp->desktop()->size());
+
+        // get new desktopIconsArea from kicker
+        QByteArray data, result;
+        QDataStream arg(data, IO_WriteOnly);
+        arg << kdesktop_screen_number;
+        QCString replyType;
+        QRect area;
+
+        if ( kapp->dcopClient()->call(kicker_name, kicker_name, "desktopIconsArea(int)",
+                                       data, replyType, result, false, 2000) )
+        {
+            QDataStream res(result, IO_ReadOnly);
+            res >> area;
+        }
+        else
+            area = kwinModule()->workArea(kwinModule()->currentDesktop());
+
+        m_pIconView->updateWorkArea(area);
+        m_pIconView->startDirLister();
+    }
+}
+
+void KDesktop::switchDesktops( int delta )
+{
+    bool old = m_bWheelSwitchesWorkspace;
+    m_bWheelSwitchesWorkspace = true;
+    slotSwitchDesktops(delta);
+    m_bWheelSwitchesWorkspace = old;
+}
+
+bool KDesktop::event(QEvent * e)
+{
+    if ( e->type() == QEvent::WindowDeactivate)
+    {
+        if (m_pIconView)
+            m_pIconView->clearSelection();
+    }
+    return QWidget::event(e);
+}
+
+#include "desktop.moc"