workspace/libs/kworkspace/kwindowlistmenu.cpp

   1 /*****************************************************************
   2
   3 Copyright (c) 2000 Matthias Elter <elter@kde.org>
   4                    Matthias Ettrich <ettrich@kde.org>
   5
   6 Permission is hereby granted, free of charge, to any person obtaining a copy
   7 of this software and associated documentation files (the "Software"), to deal
   8 in the Software without restriction, including without limitation the rights
   9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 copies of the Software, and to permit persons to whom the Software is
  11 furnished to do so, subject to the following conditions:
  12
  13 The above copyright notice and this permission notice shall be included in
  14 all copies or substantial portions of the Software.
  15
  16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  19 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  20 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23 ******************************************************************/
  24
  25 #include "kwindowlistmenu.h"
  26
  27 #include <QtCore/QBool>
  28
  29 #include <QtGui/QApplication>
  30 #include <QtGui/QDesktopWidget>
  31 #include <QtGui/QPainter>
  32 #include <QtGui/QX11Info>
  33
  34 #include <QtDBus/QtDBus>
  35 #include <klocale.h>
  36 #include <kstringhandler.h>
  37 #include <kstyle.h>
  38 #include <kwindowsystem.h>
  39 #include <netwm.h>
  40
  41 #undef Bool
  42 #include "kwindowlistmenu.moc"
  43 #include "kwin_interface.h"
  44
  45 static bool compareKWinWindowInfo( KWindowInfo* firstInfo, KWindowInfo* secondInfo )
  46 {
  47   QString firstTitle, secondTitle;
  48
  49   if ( firstInfo )
  50     firstTitle = firstInfo->visibleNameWithState().toLower();
  51
  52   if ( secondInfo )
  53     secondTitle = secondInfo->visibleNameWithState().toLower();
  54
  55   return firstTitle.compare( secondTitle ) >= 0;
  56 }
  57
  58 class KWindowListMenu::Private
  59 {
  60 };
  61
  62 KWindowListMenu::KWindowListMenu( QWidget *parent )
  63   : KMenu( parent ), d( new Private )
  64 {
  65 }
  66
  67 KWindowListMenu::~KWindowListMenu()
  68 {
  69   delete d;
  70 }
  71
  72 static bool standaloneDialog( const KWindowInfo* info, const QList<KWindowInfo*>& list )
  73 {
  74   WId group = info->groupLeader();
  75
  76   if ( group == 0 )
  77     return info->transientFor() == QX11Info::appRootWindow();
  78
  79   foreach ( KWindowInfo* info, list )
  80     if ( info->groupLeader() == group )
  81       return false;
  82
  83   return true;
  84 }
  85
  86 void KWindowListMenu::init()
  87 {
  88   int numberOfDesktops = KWindowSystem::numberOfDesktops();
  89   int currentDesktop = KWindowSystem::currentDesktop();
  90   WId activeWindow = KWindowSystem::activeWindow();
  91
  92   // Make sure the popup is not too wide, otherwise clicking in the middle of kdesktop
  93   // wouldn't leave any place for the popup, and release would activate some menu entry.
  94   int maxwidth = qApp->desktop()->screenGeometry( this ).width() / 2 - 100;
  95
  96   clear();
  97
  98   QAction* unclutter = addAction( i18n("Unclutter Windows"),
  99                               this, SLOT( slotUnclutterWindows() ) );
 100   QAction* cascade = addAction( i18n("Cascade Windows"),
 101                             this, SLOT( slotCascadeWindows() ) );
 102
 103   // if we only have one desktop we won't be showing titles, so put a separator in
 104   if ( numberOfDesktops == 1 )
 105     addSeparator();
 106
 107   QList<KWindowInfo> windows;
 108   foreach ( WId id, KWindowSystem::windows() )
 109     windows.append( KWindowSystem::windowInfo( id, NET::WMDesktop ) );
 110
 111   bool showAllDesktopsGroup = ( numberOfDesktops > 1 );
 112
 113   int i = 0;
 114   for ( int j = 1; j <= numberOfDesktops + (showAllDesktopsGroup ? 1 : 0); j++ ) {
 115     bool onAllDesktops = ( j > numberOfDesktops );
 116     int items = 0;
 117
 118     // KDE4 porting - huh? didn't know you could set an item checked before it's created?
 119     //if (!activeWindow && d == cd)
 120         //setItemChecked(1000 + d, true);
 121
 122     QList<KWindowInfo*> list;
 123
 124     foreach (KWindowInfo wi, windows) {
 125       if ( (wi.desktop() == j) || (onAllDesktops && wi.onAllDesktops())
 126            || (!showAllDesktopsGroup && wi.onAllDesktops()) ) {
 127         list.append( new KWindowInfo( wi.win(),
 128                          NET::WMVisibleName | NET::WMState | NET::XAWMState | NET::WMWindowType,
 129                          NET::WM2GroupLeader | NET::WM2TransientFor ) );
 130       }
 131     }
 132
 133     qStableSort( list.begin(), list.end(), compareKWinWindowInfo );
 134
 135     foreach ( KWindowInfo* info, list ) {
 136       ++i;
 137       QString itemText = fontMetrics().elidedText(info->visibleNameWithState(), Qt::ElideMiddle, maxwidth);
 138
 139       NET::WindowType windowType = info->windowType( NET::NormalMask | NET::DesktopMask
 140           | NET::DockMask | NET::ToolbarMask | NET::MenuMask | NET::DialogMask
 141           | NET::OverrideMask | NET::TopMenuMask | NET::UtilityMask | NET::SplashMask );
 142
 143       if ( (windowType == NET::Normal || windowType == NET::Unknown
 144               || (windowType == NET::Dialog && standaloneDialog( info, list )))
 145               && !(info->state() & NET::SkipTaskbar) ) {
 146
 147         QPixmap pm = KWindowSystem::icon( info->win(), 16, 16, true );
 148         items++;
 149
 150         // ok, we have items on this desktop, let's show the title
 151         if ( items == 1 && numberOfDesktops > 1 ) {
 152           if( !onAllDesktops )
 153               addTitle( KWindowSystem::desktopName( j ) );
 154           else
 155               addTitle( i18n( "On All Desktops" ) );
 156         }
 157
 158         // Avoid creating unwanted accelerators.
 159         itemText.replace( '&', QLatin1String( "&&" ));
 160
 161         QAction* action = addAction( pm, itemText, this, SLOT( slotForceActiveWindow() ) );
 162         action->setData( (int)info->win() );
 163
 164         if ( info->win() == activeWindow )
 165           action->setChecked( true );
 166       }
 167     }
 168
 169     if ( j == currentDesktop ) {
 170       unclutter->setEnabled( items > 0 );
 171       cascade->setEnabled( items > 0 );
 172     }
 173
 174     qDeleteAll( list );
 175   }
 176
 177   // no windows?
 178   if ( i == 0 ) {
 179     if ( numberOfDesktops > 1 )
 180       addSeparator(); // because we don't have any titles, nor a separator
 181
 182     addAction( i18n( "No Windows" ) )->setEnabled( false );
 183   }
 184 }
 185
 186 void KWindowListMenu::slotForceActiveWindow()
 187 {
 188     QAction* window = qobject_cast<QAction*>(sender());
 189     if (!window || !window->data().canConvert(QVariant::Int))
 190         return;
 191
 192     KWindowSystem::forceActiveWindow(window->data().toInt());
 193 }
 194
 195 void KWindowListMenu::slotSetCurrentDesktop()
 196 {
 197     QAction* window = qobject_cast<QAction*>(sender());
 198     if (!window || !window->data().canConvert(QVariant::Int))
 199         return;
 200
 201     KWindowSystem::setCurrentDesktop(window->data().toInt());
 202 }
 203
 204 // This popup is much more useful from keyboard if it has the active
 205 // window active by default - however, QPopupMenu tries hard to resist.
 206 // QPopupMenu::popup() resets the active item, so this needs to be
 207 // called after popup().
 208 void KWindowListMenu::selectActiveWindow()
 209 {
 210     foreach (QAction* action, actions())
 211         if (action->isChecked()) {
 212             setActiveAction(action);
 213             break;
 214         }
 215 }
 216
 217 void KWindowListMenu::slotUnclutterWindows()
 218 {
 219     org::kde::KWin kwin("org.kde.kwin", "/KWin", QDBusConnection::sessionBus());
 220     kwin.unclutterDesktop();
 221 }
 222
 223 void KWindowListMenu::slotCascadeWindows()
 224 {
 225     org::kde::KWin kwin("org.kde.kwin", "/KWin", QDBusConnection::sessionBus());
 226     kwin.cascadeDesktop();
 227 }
 228