kwin Library API Documentation

tabbox.cpp

00001 /********x*********************************************************
00002  KWin - the KDE window manager
00003  This file is part of the KDE project.
00004 
00005 Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
00006 Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
00007 
00008 You can Freely distribute this program under the GNU General Public
00009 License. See the file "COPYING" for the exact licensing terms.
00010 ******************************************************************/
00011 
00012 //#define QT_CLEAN_NAMESPACE
00013 #include "tabbox.h"
00014 #include "workspace.h"
00015 #include "client.h"
00016 #include <qpainter.h>
00017 #include <qlabel.h>
00018 #include <qdrawutil.h>
00019 #include <qstyle.h>
00020 #include <kglobal.h>
00021 #include <fixx11h.h>
00022 #include <kconfig.h>
00023 #include <klocale.h>
00024 #include <qapplication.h>
00025 #include <qdesktopwidget.h>
00026 #include <qcursor.h>
00027 #include <kstringhandler.h>
00028 #include <stdarg.h>
00029 #include <kdebug.h>
00030 #include <kglobalaccel.h>
00031 #include <kkeynative.h>
00032 #include <kglobalsettings.h>
00033 #include <kiconeffect.h>
00034 #include <X11/keysym.h>
00035 #include <X11/keysymdef.h>
00036 
00037 // specify externals before namespace
00038 
00039 extern Time qt_x_time;
00040 
00041 namespace KWinInternal
00042 {
00043 
00044 extern QPixmap* kwin_get_menu_pix_hack();
00045 
00046 TabBox::TabBox( Workspace *ws, const char *name )
00047     : QFrame( 0, name, Qt::WNoAutoErase ), client(0), wspace(ws)
00048     {
00049     setFrameStyle(QFrame::StyledPanel | QFrame::Plain);
00050     setLineWidth(2);
00051     setMargin(2);
00052 
00053     showMiniIcon = false;
00054 
00055     no_tasks = i18n("*** No Windows ***");
00056     m = DesktopMode; // init variables
00057     reconfigure();
00058     reset();
00059     connect(&delayedShowTimer, SIGNAL(timeout()), this, SLOT(show()));
00060     }
00061 
00062 TabBox::~TabBox()
00063     {
00064     }
00065 
00066 
00072 void TabBox::setMode( Mode mode )
00073     {
00074     m = mode;
00075     }
00076 
00077 
00081 void TabBox::createClientList(ClientList &list, int desktop /*-1 = all*/, Client *c, bool chain)
00082     {
00083     ClientList::size_type idx = 0;
00084 
00085     list.clear();
00086 
00087     Client* start = c;
00088 
00089     if ( chain )
00090         c = workspace()->nextFocusChainClient(c);
00091     else
00092         c = workspace()->stackingOrder().first();
00093 
00094     Client* stop = c;
00095 
00096     while ( c )
00097         {
00098         if ( ((desktop == -1) || c->isOnDesktop(desktop))
00099              && c->wantsTabFocus() )
00100             {
00101             if ( start == c )
00102                 {
00103                 list.remove( c );
00104                 list.prepend( c );
00105                 }
00106             else
00107                 { // don't add windows that have modal dialogs
00108                 Client* modal = c->findModal();
00109                 if( modal == NULL || modal == c )
00110                     list += c;
00111                 else if( !list.contains( modal ))
00112                     list += modal;
00113                 else
00114                     ; // nothing
00115                 }
00116             }
00117 
00118         if ( chain )
00119           c = workspace()->nextFocusChainClient( c );
00120         else
00121           {
00122           if ( idx >= (workspace()->stackingOrder().size()-1) )
00123             c = 0;
00124           else
00125             c = workspace()->stackingOrder()[++idx];
00126           }
00127 
00128         if ( c == stop )
00129             break;
00130         }
00131     }
00132 
00133 
00138 void TabBox::reset()
00139     {
00140     int w, h, cw = 0, wmax = 0;
00141 
00142     QRect r = KGlobalSettings::desktopGeometry(QCursor::pos());
00143 
00144     // calculate height of 1 line
00145     // fontheight + 1 pixel above + 1 pixel below, or 32x32 icon + 2 pixel above + below
00146     lineHeight = QMAX(fontMetrics().height() + 2, 32 + 4);
00147 
00148     if ( mode() == WindowsMode )
00149         {
00150         client = workspace()->activeClient();
00151 
00152         // get all clients to show
00153         createClientList(clients, options_traverse_all ? -1 : workspace()->currentDesktop(), client, true);
00154 
00155         // calculate maximum caption width
00156         cw = fontMetrics().width(no_tasks)+20;
00157         for (ClientList::ConstIterator it = clients.begin(); it != clients.end(); ++it)
00158           {
00159           cw = fontMetrics().width( (*it)->caption() );
00160           if ( cw > wmax ) wmax = cw;
00161           }
00162 
00163         // calculate height for the popup
00164         if ( clients.count() == 0 )  // height for the "not tasks" text
00165           {
00166           QFont f = font();
00167           f.setBold( TRUE );
00168           f.setPointSize( 14 );
00169 
00170           h = QFontMetrics(f).height()*4;
00171           }
00172         else
00173           {
00174           showMiniIcon = false;
00175           h = clients.count() * lineHeight;
00176 
00177           if ( h > (r.height()-(2*frameWidth())) )  // if too high, use mini icons
00178             {
00179             showMiniIcon = true;
00180             // fontheight + 1 pixel above + 1 pixel below, or 16x16 icon + 1 pixel above + below
00181             lineHeight = QMAX(fontMetrics().height() + 2, 16 + 2);
00182 
00183             h = clients.count() * lineHeight;
00184 
00185             if ( h > (r.height()-(2*frameWidth())) ) // if still too high, remove some clients
00186               {
00187                 // how many clients to remove
00188                 int howMany = (h - (r.height()-(2*frameWidth())))/lineHeight;
00189                 for (; howMany; howMany--)
00190                   clients.remove(clients.last());
00191 
00192                 h = clients.count() * lineHeight;
00193               }
00194             }
00195           }
00196         }
00197     else
00198         { // DesktopListMode
00199         showMiniIcon = false;
00200         desk = workspace()->currentDesktop();
00201 
00202         for ( int i = 1; i <= workspace()->numberOfDesktops(); i++ )
00203           {
00204           cw = fontMetrics().width( workspace()->desktopName(i) );
00205           if ( cw > wmax ) wmax = cw;
00206           }
00207 
00208         // calculate height for the popup (max. 16 desktops always fit in a 800x600 screen)
00209         h = workspace()->numberOfDesktops() * lineHeight;
00210         }
00211 
00212     // height, width for the popup
00213     h += 2 * frameWidth();
00214     w = 2*frameWidth() + 5*2 + ( showMiniIcon ? 16 : 32 ) + 8 + wmax; // 5*2=margins, ()=icon, 8=space between icon+text
00215     w = kClamp( w, r.width()/3 , r.width() * 4 / 5 );
00216 
00217     setGeometry( (r.width()-w)/2 + r.x(),
00218                  (r.height()-h)/2+ r.y(),
00219                  w, h );
00220     }
00221 
00222 
00226 void TabBox::nextPrev( bool next)
00227     {
00228     if ( mode() == WindowsMode )
00229         {
00230         Client* firstClient = 0;
00231         do
00232             {
00233             if ( next )
00234                 client = workspace()->nextFocusChainClient(client);
00235             else
00236                 client = workspace()->previousFocusChainClient(client);
00237             if (!firstClient)
00238                 {
00239         // When we see our first client for the second time,
00240         // it's time to stop.
00241                 firstClient = client;
00242                 }
00243             else if (client == firstClient)
00244                 {
00245         // No candidates found.
00246                 client = 0;
00247                 break;
00248                 }
00249             } while ( client && !clients.contains( client ));
00250         }
00251     else if( mode() == DesktopMode )
00252         {
00253         if ( next )
00254             desk = workspace()->nextDesktopFocusChain( desk );
00255         else
00256             desk = workspace()->previousDesktopFocusChain( desk );
00257         }
00258     else
00259         { // DesktopListMode
00260         if ( next )
00261             {
00262             desk++;
00263             if ( desk > workspace()->numberOfDesktops() )
00264                 desk = 1;
00265             }
00266         else
00267             {
00268             desk--;
00269             if ( desk < 1 )
00270                 desk = workspace()->numberOfDesktops();
00271             }
00272         }
00273 
00274     update();
00275     }
00276 
00277 
00278 
00283 Client* TabBox::currentClient()
00284     {
00285     if ( mode() != WindowsMode )
00286         return 0;
00287     if (!workspace()->hasClient( client ))
00288         return 0;
00289     return client;
00290     }
00291 
00297 int TabBox::currentDesktop()
00298     {
00299     if ( mode() == DesktopListMode || mode() == DesktopMode )
00300         return desk;
00301     else
00302         return -1;
00303     }
00304 
00305 
00309 void TabBox::showEvent( QShowEvent* )
00310     {
00311     raise();
00312     }
00313 
00314 
00318 void TabBox::hideEvent( QHideEvent* )
00319     {
00320     }
00321 
00325 void TabBox::drawContents( QPainter * )
00326     {
00327     QRect r(contentsRect());
00328     QPixmap pix(r.size());  // do double buffering to avoid flickers
00329     pix.fill(this, 0, 0);
00330 
00331     QPainter p;
00332     p.begin(&pix, this);
00333 
00334     QPixmap* menu_pix = kwin_get_menu_pix_hack();
00335 
00336     int iconWidth = showMiniIcon ? 16 : 32;
00337     int x = 0;
00338     int y = 0;
00339 
00340     if ( mode () == WindowsMode )
00341         {
00342         if ( !currentClient() )
00343             {
00344             QFont f = font();
00345             f.setBold( TRUE );
00346             f.setPointSize( 14 );
00347 
00348             p.setFont(f);
00349             p.drawText( r, AlignCenter, no_tasks);
00350             }
00351         else
00352             {
00353             for (ClientList::ConstIterator it = clients.begin(); it != clients.end(); ++it)
00354               {
00355               if ( workspace()->hasClient( *it ) )  // safety
00356                   {
00357                   // draw highlight background
00358                   if ( (*it) == currentClient() )
00359                     p.fillRect(x, y, r.width(), lineHeight, colorGroup().highlight());
00360 
00361                   // draw icon
00362                   QPixmap icon;
00363                   if ( showMiniIcon )
00364                     {
00365                     if ( !(*it)->miniIcon().isNull() )
00366                       icon = (*it)->miniIcon();
00367                     }
00368                   else
00369                     if ( !(*it)->icon().isNull() )
00370                       icon = (*it)->icon();
00371                     else if ( menu_pix )
00372                       icon = *menu_pix;
00373                 
00374                   if( !icon.isNull())
00375                     {
00376                     if( (*it)->isMinimized())
00377                         KIconEffect::semiTransparent( icon );
00378                     p.drawPixmap( x+5, y + (lineHeight - iconWidth)/2, icon );
00379                     }
00380 
00381                   // generate text to display
00382                   QString s;
00383 
00384                   if ( !(*it)->isOnDesktop(workspace()->currentDesktop()) )
00385                     s = workspace()->desktopName((*it)->desktop()) + ": ";
00386 
00387                   if ( (*it)->isMinimized() )
00388                     s += QString("(") + (*it)->caption() + ")";
00389                   else
00390                     s += (*it)->caption();
00391 
00392                   s = KStringHandler::cPixelSqueeze(s, fontMetrics(), r.width() - 5 - iconWidth - 8);
00393 
00394                   // draw text
00395                   if ( (*it) == currentClient() )
00396                     p.setPen(colorGroup().highlightedText());
00397                   else if( (*it)->isMinimized())
00398                     {
00399                     QColor c1 = colorGroup().text();
00400                     QColor c2 = colorGroup().background();
00401                     // from kicker's TaskContainer::blendColors()
00402                     int r1, g1, b1;
00403                     int r2, g2, b2;
00404 
00405                     c1.rgb( &r1, &g1, &b1 );
00406                     c2.rgb( &r2, &g2, &b2 );
00407 
00408                     r1 += (int) ( .5 * ( r2 - r1 ) );
00409                     g1 += (int) ( .5 * ( g2 - g1 ) );
00410                     b1 += (int) ( .5 * ( b2 - b1 ) );
00411 
00412                     p.setPen(QColor( r1, g1, b1 ));
00413                     }
00414                   else
00415                     p.setPen(colorGroup().text());
00416 
00417                   p.drawText(x+5 + iconWidth + 8, y, r.width() - 5 - iconWidth - 8, lineHeight,
00418                               Qt::AlignLeft | Qt::AlignVCenter | Qt::SingleLine, s);
00419 
00420                   y += lineHeight;
00421                   }
00422               if ( y >= r.height() ) break;
00423               }
00424             }
00425         }
00426     else
00427         { // DesktopMode || DesktopListMode
00428         int iconHeight = iconWidth;
00429 
00430         // get widest desktop name/number
00431         QFont f(font());
00432         f.setBold(true);
00433         f.setPixelSize(iconHeight - 4);  // pixel, not point because I need to know the pixels
00434         QFontMetrics fm(f);
00435 
00436         int wmax = 0;
00437         for ( int i = 1; i <= workspace()->numberOfDesktops(); i++ )
00438             {
00439             wmax = QMAX(wmax, fontMetrics().width(workspace()->desktopName(i)));
00440 
00441             // calculate max width of desktop-number text
00442             QString num = QString::number(i);
00443             iconWidth = QMAX(iconWidth - 4, fm.boundingRect(num).width()) + 4;
00444             }
00445 
00446         // In DesktopMode, start at the current desktop
00447         // In DesktopListMode, start at desktop #1
00448         int iDesktop = (mode() == DesktopMode) ? workspace()->currentDesktop() : 1;
00449         for ( int i = 1; i <= workspace()->numberOfDesktops(); i++ )
00450             {
00451             // draw highlight background
00452             if ( iDesktop == desk )  // current desktop
00453               p.fillRect(x, y, r.width(), lineHeight, colorGroup().highlight());
00454 
00455             p.save();
00456 
00457             // draw "icon" (here: number of desktop)
00458             p.fillRect(x+5, y+2, iconWidth, iconHeight, colorGroup().base());
00459             p.setPen(colorGroup().text());
00460             p.drawRect(x+5, y+2, iconWidth, iconHeight);
00461 
00462             // draw desktop-number
00463             p.setFont(f);
00464             QString num = QString::number(iDesktop);
00465             p.drawText(x+5, y+2, iconWidth, iconHeight, Qt::AlignCenter, num);
00466 
00467             p.restore();
00468 
00469             // draw desktop name text
00470             if ( iDesktop == desk )
00471               p.setPen(colorGroup().highlightedText());
00472             else
00473               p.setPen(colorGroup().text());
00474 
00475             p.drawText(x+5 + iconWidth + 8, y, r.width() - 5 - iconWidth - 8, lineHeight,
00476                        Qt::AlignLeft | Qt::AlignVCenter | Qt::SingleLine,
00477                        workspace()->desktopName(iDesktop));
00478 
00479             // show mini icons from that desktop aligned to each other
00480             int x1 = x + 5 + iconWidth + 8 + wmax + 5;
00481 
00482             ClientList list;
00483             createClientList(list, iDesktop, 0, false);
00484             // clients are in reversed stacking order
00485             for (ClientList::ConstIterator it = list.fromLast(); it != list.end(); --it)
00486               {
00487               if ( !(*it)->miniIcon().isNull() )
00488                 {
00489                 if ( x1+18 >= x+r.width() )  // only show full icons
00490                   break;
00491 
00492                 p.drawPixmap( x1, y + (lineHeight - 16)/2, (*it)->miniIcon() );
00493                 x1 += 18;
00494                 }
00495               }
00496 
00497             // next desktop
00498             y += lineHeight;
00499             if ( y >= r.height() ) break;
00500 
00501             if( mode() == DesktopMode )
00502                 iDesktop = workspace()->nextDesktopFocusChain( iDesktop );
00503             else
00504                 iDesktop++;
00505             }
00506         }
00507     p.end();
00508     bitBlt(this, r.x(), r.y(), &pix);
00509     }
00510 
00511 void TabBox::hide()
00512     {
00513     delayedShowTimer.stop();
00514     QWidget::hide();
00515     QApplication::syncX();
00516     XEvent otherEvent;
00517     while (XCheckTypedEvent (qt_xdisplay(), EnterNotify, &otherEvent ) )
00518         ;
00519     }
00520 
00521 
00522 void TabBox::reconfigure()
00523     {
00524     KConfig * c(KGlobal::config());
00525     c->setGroup("TabBox");
00526     options_traverse_all = c->readNumEntry("TraverseAll", false );
00527     }
00528 
00547 void TabBox::delayedShow()
00548     {
00549     KConfig * c(KGlobal::config());
00550     c->setGroup("TabBox");
00551     bool delay = c->readNumEntry("ShowDelay", true);
00552 
00553     if (!delay)
00554         {
00555         show();
00556         return;
00557         }
00558 
00559     int delayTime = c->readNumEntry("DelayTime", 90);
00560     delayedShowTimer.start(delayTime, true);
00561     }
00562 
00563 
00564 void TabBox::handleMouseEvent( XEvent* e )
00565     {
00566     XAllowEvents( qt_xdisplay(), AsyncPointer, qt_x_time );
00567     if( e->type != ButtonPress )
00568         return;
00569     QPoint pos( e->xbutton.x_root, e->xbutton.y_root );
00570     if( !geometry().contains( pos ))
00571         {
00572         workspace()->closeTabBox();  // click outside closes tab
00573         return;
00574         }
00575     pos.rx() -= x(); // pos is now inside tabbox
00576     pos.ry() -= y();
00577     int num = (pos.y()-frameWidth()) / lineHeight;
00578 
00579     if( mode() == WindowsMode )
00580         {
00581         for( ClientList::ConstIterator it = clients.begin();
00582              it != clients.end();
00583              ++it)
00584             {
00585             if( workspace()->hasClient( *it ) && (num == 0) ) // safety
00586                 {
00587                 client = *it;
00588                 break;
00589                 }
00590             num--;
00591             }
00592         }
00593     else
00594         {
00595         int iDesktop = (mode() == DesktopMode) ? workspace()->currentDesktop() : 1;
00596         for( int i = 1;
00597              i <= workspace()->numberOfDesktops();
00598              ++i )
00599             {
00600             if( num == 0 )
00601                 {
00602                 desk = iDesktop;
00603                 break;
00604                 }
00605             num--;
00606             if( mode() == DesktopMode )
00607                 iDesktop = workspace()->nextDesktopFocusChain( iDesktop );
00608             else
00609                 iDesktop++;
00610             }
00611         }
00612     update();
00613     }
00614 
00615 //*******************************
00616 // Workspace
00617 //*******************************
00618 
00619 
00624 static
00625 bool areKeySymXsDepressed( bool bAll, int nKeySyms, ... )
00626     {
00627     va_list args;
00628     char keymap[32];
00629 
00630     kdDebug(125) << "areKeySymXsDepressed: " << (bAll ? "all of " : "any of ") << nKeySyms << endl;
00631 
00632     va_start( args, nKeySyms );
00633     XQueryKeymap( qt_xdisplay(), keymap );
00634 
00635     for( int iKeySym = 0; iKeySym < nKeySyms; iKeySym++ )
00636         {
00637         uint keySymX = va_arg( args, uint );
00638         uchar keyCodeX = XKeysymToKeycode( qt_xdisplay(), keySymX );
00639         int i = keyCodeX / 8;
00640         char mask = 1 << (keyCodeX - (i * 8));
00641 
00642         kdDebug(125) << iKeySym << ": keySymX=0x" << QString::number( keySymX, 16 )
00643                 << " i=" << i << " mask=0x" << QString::number( mask, 16 )
00644                 << " keymap[i]=0x" << QString::number( keymap[i], 16 ) << endl;
00645 
00646                 // Abort if bad index value,
00647         if( i < 0 || i >= 32 )
00648                 return false;
00649 
00650                 // If ALL keys passed need to be depressed,
00651         if( bAll )
00652             {
00653             if( (keymap[i] & mask) == 0 )
00654                     return false;
00655             }
00656         else
00657             {
00658                         // If we are looking for ANY key press, and this key is depressed,
00659             if( keymap[i] & mask )
00660                     return true;
00661             }
00662         }
00663 
00664         // If we were looking for ANY key press, then none was found, return false,
00665         // If we were looking for ALL key presses, then all were found, return true.
00666     return bAll;
00667     }
00668 
00669 static bool areModKeysDepressed( const KKeySequence& seq )
00670     {
00671     uint rgKeySyms[10];
00672     int nKeySyms = 0;
00673     if( seq.isNull())
00674     return false;
00675     int mod = seq.key(seq.count()-1).modFlags();
00676 
00677     if ( mod & KKey::SHIFT )
00678         {
00679         rgKeySyms[nKeySyms++] = XK_Shift_L;
00680         rgKeySyms[nKeySyms++] = XK_Shift_R;
00681         }
00682     if ( mod & KKey::CTRL )
00683         {
00684         rgKeySyms[nKeySyms++] = XK_Control_L;
00685         rgKeySyms[nKeySyms++] = XK_Control_R;
00686         }
00687     if( mod & KKey::ALT )
00688         {
00689         rgKeySyms[nKeySyms++] = XK_Alt_L;
00690         rgKeySyms[nKeySyms++] = XK_Alt_R;
00691         }
00692     if( mod & KKey::WIN )
00693         {
00694         // HACK: it would take a lot of code to determine whether the Win key
00695         //  is associated with Super or Meta, so check for both
00696         rgKeySyms[nKeySyms++] = XK_Super_L;
00697         rgKeySyms[nKeySyms++] = XK_Super_R;
00698         rgKeySyms[nKeySyms++] = XK_Meta_L;
00699         rgKeySyms[nKeySyms++] = XK_Meta_R;
00700         }
00701 
00702     // Is there a better way to push all 8 integer onto the stack?
00703     return areKeySymXsDepressed( false, nKeySyms,
00704         rgKeySyms[0], rgKeySyms[1], rgKeySyms[2], rgKeySyms[3],
00705         rgKeySyms[4], rgKeySyms[5], rgKeySyms[6], rgKeySyms[7] );
00706     }
00707 
00708 static bool areModKeysDepressed( const KShortcut& cut )
00709     {
00710     for( unsigned int i = 0;
00711      i < cut.count();
00712      ++i )
00713     {
00714     if( areModKeysDepressed( cut.seq( i )))
00715         return true;
00716     }
00717     return false;
00718     }
00719 
00720 void Workspace::slotWalkThroughWindows()
00721     {
00722     if ( root != qt_xrootwin() )
00723         return;
00724     if ( tab_grab || control_grab )
00725         return;
00726     if ( options->altTabStyle == Options::CDE  || !options->focusPolicyIsReasonable() )
00727         {
00728         //XUngrabKeyboard(qt_xdisplay(), qt_x_time); // need that because of accelerator raw mode
00729         // CDE style raise / lower
00730         CDEWalkThroughWindows( true );
00731         }
00732     else
00733         {
00734         if ( areModKeysDepressed( cutWalkThroughWindows ) )
00735             {
00736             if ( startKDEWalkThroughWindows() )
00737                 KDEWalkThroughWindows( true );
00738             }
00739         else
00740             // if the shortcut has no modifiers, don't show the tabbox,
00741             // don't grab, but simply go to the next window
00742             KDEOneStepThroughWindows( true );
00743         }
00744     }
00745 
00746 void Workspace::slotWalkBackThroughWindows()
00747     {
00748     if ( root != qt_xrootwin() )
00749         return;
00750     if( tab_grab || control_grab )
00751         return;
00752     if ( options->altTabStyle == Options::CDE  || !options->focusPolicyIsReasonable() )
00753         {
00754         // CDE style raise / lower
00755         CDEWalkThroughWindows( false );
00756         }
00757     else
00758         {
00759         if ( areModKeysDepressed( cutWalkThroughWindowsReverse ) )
00760             {
00761             if ( startKDEWalkThroughWindows() )
00762                 KDEWalkThroughWindows( false );
00763             }
00764         else
00765             {
00766             KDEOneStepThroughWindows( false );
00767             }
00768         }
00769     }
00770 
00771 void Workspace::slotWalkThroughDesktops()
00772     {
00773     if ( root != qt_xrootwin() )
00774         return;
00775     if( tab_grab || control_grab )
00776         return;
00777     if ( areModKeysDepressed( cutWalkThroughDesktops ) )
00778         {
00779         if ( startWalkThroughDesktops() )
00780             walkThroughDesktops( true );
00781         }
00782     else
00783         {
00784         oneStepThroughDesktops( true );
00785         }
00786     }
00787 
00788 void Workspace::slotWalkBackThroughDesktops()
00789     {
00790     if ( root != qt_xrootwin() )
00791         return;
00792     if( tab_grab || control_grab )
00793         return;
00794     if ( areModKeysDepressed( cutWalkThroughDesktopsReverse ) )
00795         {
00796         if ( startWalkThroughDesktops() )
00797             walkThroughDesktops( false );
00798         }
00799     else
00800         {
00801         oneStepThroughDesktops( false );
00802         }
00803     }
00804 
00805 void Workspace::slotWalkThroughDesktopList()
00806     {
00807     if ( root != qt_xrootwin() )
00808         return;
00809     if( tab_grab || control_grab )
00810         return;
00811     if ( areModKeysDepressed( cutWalkThroughDesktopList ) )
00812         {
00813         if ( startWalkThroughDesktopList() )
00814             walkThroughDesktops( true );
00815         }
00816     else
00817         {
00818         oneStepThroughDesktopList( true );
00819         }
00820     }
00821 
00822 void Workspace::slotWalkBackThroughDesktopList()
00823     {
00824     if ( root != qt_xrootwin() )
00825         return;
00826     if( tab_grab || control_grab )
00827         return;
00828     if ( areModKeysDepressed( cutWalkThroughDesktopListReverse ) )
00829         {
00830         if ( startWalkThroughDesktopList() )
00831             walkThroughDesktops( false );
00832         }
00833     else
00834         {
00835         oneStepThroughDesktopList( false );
00836         }
00837     }
00838 
00839 bool Workspace::startKDEWalkThroughWindows()
00840     {
00841     if( !establishTabBoxGrab())
00842         return false;
00843     tab_grab        = TRUE;
00844     keys->setEnabled( false );
00845     client_keys->setEnabled( false );
00846     tab_box->setMode( TabBox::WindowsMode );
00847     tab_box->reset();
00848     return TRUE;
00849     }
00850 
00851 bool Workspace::startWalkThroughDesktops( int mode )
00852     {
00853     if( !establishTabBoxGrab())
00854         return false;
00855     control_grab = TRUE;
00856     keys->setEnabled( false );
00857     client_keys->setEnabled( false );
00858     tab_box->setMode( (TabBox::Mode) mode );
00859     tab_box->reset();
00860     return TRUE;
00861     }
00862 
00863 bool Workspace::startWalkThroughDesktops()
00864     {
00865     return startWalkThroughDesktops( TabBox::DesktopMode );
00866     }
00867 
00868 bool Workspace::startWalkThroughDesktopList()
00869     {
00870     return startWalkThroughDesktops( TabBox::DesktopListMode );
00871     }
00872 
00873 void Workspace::KDEWalkThroughWindows( bool forward )
00874     {
00875     tab_box->nextPrev( forward );
00876     tab_box->delayedShow();
00877     }
00878 
00879 void Workspace::walkThroughDesktops( bool forward )
00880     {
00881     tab_box->nextPrev( forward );
00882     tab_box->delayedShow();
00883     }
00884 
00885 void Workspace::CDEWalkThroughWindows( bool forward )
00886     {
00887     Client* c = activeClient();
00888     Client* nc = c;
00889     bool options_traverse_all;
00890         {
00891         KConfigGroupSaver saver( KGlobal::config(), "TabBox" );
00892         options_traverse_all = KGlobal::config()->readNumEntry("TraverseAll", false );
00893         }
00894 
00895     if ( !forward )
00896         {
00897         do
00898             {
00899             nc = previousStaticClient(nc);
00900             } while (nc && nc != c &&
00901                 (( !options_traverse_all && !nc->isOnDesktop(currentDesktop())) ||
00902                  nc->isMinimized() || !nc->wantsTabFocus() ) );
00903         }
00904     else
00905         {
00906             do
00907             {
00908             nc = nextStaticClient(nc);
00909             } while (nc && nc != c &&
00910                     (( !options_traverse_all && !nc->isOnDesktop(currentDesktop())) ||
00911                      nc->isMinimized() || !nc->wantsTabFocus() ) );
00912         }
00913     if (c && c != nc)
00914         lowerClient( c );
00915     if (nc)
00916         {
00917         if ( options->focusPolicyIsReasonable() )
00918             {
00919             activateClient( nc );
00920             if( nc->isShade())
00921                 nc->setShade( ShadeActivated );
00922             }
00923         else
00924             {
00925             if( !nc->isOnDesktop( currentDesktop()))
00926                 setCurrentDesktop( nc->desktop());
00927             raiseClient( nc );
00928             }
00929         }
00930     }
00931 
00932 void Workspace::KDEOneStepThroughWindows( bool forward )
00933     {
00934     tab_box->setMode( TabBox::WindowsMode );
00935     tab_box->reset();
00936     tab_box->nextPrev( forward );
00937     if( Client* c = tab_box->currentClient() )
00938         {
00939         activateClient( c );
00940         if( c->isShade())
00941             c->setShade( ShadeActivated );
00942         }
00943     }
00944 
00945 void Workspace::oneStepThroughDesktops( bool forward, int mode )
00946     {
00947     tab_box->setMode( (TabBox::Mode) mode );
00948     tab_box->reset();
00949     tab_box->nextPrev( forward );
00950     if ( tab_box->currentDesktop() != -1 )
00951         setCurrentDesktop( tab_box->currentDesktop() );
00952     }
00953 
00954 void Workspace::oneStepThroughDesktops( bool forward )
00955     {
00956     oneStepThroughDesktops( forward, TabBox::DesktopMode );
00957     }
00958 
00959 void Workspace::oneStepThroughDesktopList( bool forward )
00960     {
00961     oneStepThroughDesktops( forward, TabBox::DesktopListMode );
00962     }
00963 
00967 void Workspace::tabBoxKeyPress( const KKeyNative& keyX )
00968     {
00969     bool forward = false;
00970     bool backward = false;
00971 
00972     if (tab_grab)
00973         {
00974         forward = cutWalkThroughWindows.contains( keyX );
00975         backward = cutWalkThroughWindowsReverse.contains( keyX );
00976         if (forward || backward)
00977             {
00978             kdDebug(125) << "== " << cutWalkThroughWindows.toStringInternal()
00979                 << " or " << cutWalkThroughWindowsReverse.toStringInternal() << endl;
00980             KDEWalkThroughWindows( forward );
00981             }
00982         }
00983     else if (control_grab)
00984         {
00985         forward = cutWalkThroughDesktops.contains( keyX ) ||
00986                   cutWalkThroughDesktopList.contains( keyX );
00987         backward = cutWalkThroughDesktopsReverse.contains( keyX ) ||
00988                    cutWalkThroughDesktopListReverse.contains( keyX );
00989         if (forward || backward)
00990             walkThroughDesktops(forward);
00991         }
00992 
00993     if (control_grab || tab_grab)
00994         {
00995         uint keyQt = keyX.keyCodeQt();
00996         if ( ((keyQt & 0xffff) == Qt::Key_Escape)
00997             && !(forward || backward) )
00998             { // if Escape is part of the shortcut, don't cancel
00999             closeTabBox();
01000             }
01001         }
01002     }
01003 
01004 void Workspace::closeTabBox()
01005     {
01006     removeTabBoxGrab();
01007     tab_box->hide();
01008     keys->setEnabled( true );
01009     client_keys->setEnabled( true );
01010     tab_grab = FALSE;
01011     control_grab = FALSE;
01012     }
01013 
01017 void Workspace::tabBoxKeyRelease( const XKeyEvent& ev )
01018     {
01019     unsigned int mk = ev.state &
01020         (KKeyNative::modX(KKey::SHIFT) |
01021          KKeyNative::modX(KKey::CTRL) |
01022          KKeyNative::modX(KKey::ALT) |
01023          KKeyNative::modX(KKey::WIN));
01024     // ev.state is state before the key release, so just checking mk being 0 isn't enough
01025     // using XQueryPointer() also doesn't seem to work well, so the check that all
01026     // modifiers are released: only one modifier is active and the currently released
01027     // key is this modifier - if yes, release the grab
01028     int mod_index = -1;
01029     for( int i = ShiftMapIndex;
01030          i <= Mod5MapIndex;
01031          ++i )
01032         if(( mk & ( 1 << i )) != 0 )
01033         {
01034         if( mod_index >= 0 )
01035             return;
01036         mod_index = i;
01037         }
01038     bool release = false;
01039     if( mod_index == -1 )
01040         release = true;
01041     else
01042         {
01043         XModifierKeymap* xmk = XGetModifierMapping(qt_xdisplay());
01044         for (int i=0; i<xmk->max_keypermod; i++)
01045             if (xmk->modifiermap[xmk->max_keypermod * mod_index + i]
01046                 == ev.keycode)
01047                 release = true;
01048         XFreeModifiermap(xmk);
01049         }
01050     if( !release )
01051          return;
01052     if (tab_grab)
01053         {
01054         removeTabBoxGrab();
01055         tab_box->hide();
01056         keys->setEnabled( true );
01057         client_keys->setEnabled( true );
01058         tab_grab = false;
01059         if( Client* c = tab_box->currentClient())
01060             {
01061             activateClient( c );
01062             if( c->isShade())
01063                 c->setShade( ShadeActivated );
01064             }
01065         }
01066     if (control_grab)
01067         {
01068         removeTabBoxGrab();
01069         tab_box->hide();
01070         keys->setEnabled( true );
01071         client_keys->setEnabled( true );
01072         control_grab = False;
01073         if ( tab_box->currentDesktop() != -1 )
01074             {
01075             setCurrentDesktop( tab_box->currentDesktop() );
01076                     // popupinfo->showInfo( desktopName(currentDesktop()) ); // AK - not sure
01077             }
01078         }
01079     }
01080 
01081 
01082 int Workspace::nextDesktopFocusChain( int iDesktop ) const
01083     {
01084     int i = desktop_focus_chain.find( iDesktop );
01085     if( i >= 0 && i+1 < (int)desktop_focus_chain.size() )
01086             return desktop_focus_chain[i+1];
01087     else if( desktop_focus_chain.size() > 0 )
01088             return desktop_focus_chain[ 0 ];
01089     else
01090             return 1;
01091     }
01092 
01093 int Workspace::previousDesktopFocusChain( int iDesktop ) const
01094     {
01095     int i = desktop_focus_chain.find( iDesktop );
01096     if( i-1 >= 0 )
01097             return desktop_focus_chain[i-1];
01098     else if( desktop_focus_chain.size() > 0 )
01099             return desktop_focus_chain[desktop_focus_chain.size()-1];
01100     else
01101             return numberOfDesktops();
01102     }
01103 
01108 Client* Workspace::nextFocusChainClient( Client* c ) const
01109     {
01110     if ( focus_chain.isEmpty() )
01111         return 0;
01112     ClientList::ConstIterator it = focus_chain.find( c );
01113     if ( it == focus_chain.end() )
01114         return focus_chain.last();
01115     if ( it == focus_chain.begin() )
01116         return focus_chain.last();
01117     --it;
01118     return *it;
01119     }
01120 
01125 Client* Workspace::previousFocusChainClient( Client* c ) const
01126     {
01127     if ( focus_chain.isEmpty() )
01128         return 0;
01129     ClientList::ConstIterator it = focus_chain.find( c );
01130     if ( it == focus_chain.end() )
01131         return focus_chain.first();
01132     ++it;
01133     if ( it == focus_chain.end() )
01134         return focus_chain.first();
01135     return *it;
01136     }
01137 
01142 Client* Workspace::nextStaticClient( Client* c ) const
01143     {
01144     if ( !c || clients.isEmpty() )
01145         return 0;
01146     ClientList::ConstIterator it = clients.find( c );
01147     if ( it == clients.end() )
01148         return clients.first();
01149     ++it;
01150     if ( it == clients.end() )
01151         return clients.first();
01152     return *it;
01153     }
01158 Client* Workspace::previousStaticClient( Client* c ) const
01159     {
01160     if ( !c || clients.isEmpty() )
01161         return 0;
01162     ClientList::ConstIterator it = clients.find( c );
01163     if ( it == clients.end() )
01164         return clients.last();
01165     if ( it == clients.begin() )
01166         return clients.last();
01167     --it;
01168     return *it;
01169     }
01170 
01171 bool Workspace::establishTabBoxGrab()
01172     {
01173     if( XGrabKeyboard( qt_xdisplay(), root, FALSE,
01174         GrabModeAsync, GrabModeAsync, qt_x_time) != GrabSuccess )
01175         return false;
01176     // Don't try to establish a global mouse grab using XGrabPointer, as that would prevent
01177     // using Alt+Tab while DND (#44972). However force passive grabs on all windows
01178     // in order to catch MouseRelease events and close the tabbox (#67416).
01179     // All clients already have passive grabs in their wrapper windows, so check only
01180     // the active client, which may not have it.
01181     assert( !forced_global_mouse_grab );
01182     forced_global_mouse_grab = true;
01183     if( active_client != NULL )
01184         active_client->updateMouseGrab();
01185     return true;
01186     }
01187 
01188 void Workspace::removeTabBoxGrab()
01189     {
01190     XUngrabKeyboard(qt_xdisplay(), qt_x_time);
01191     assert( forced_global_mouse_grab );
01192     forced_global_mouse_grab = false;
01193     if( active_client != NULL )
01194         active_client->updateMouseGrab();
01195     }
01196 
01197 } // namespace
01198 
01199 #include "tabbox.moc"
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