workspace/kcontrol/randr/krandrpassivepopup.cpp

   1 /*
   2  * Copyright (c) 2003 Lubos Lunak <l.lunak@kde.org>
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #include "krandrpassivepopup.h"
  20
  21 #include <kapplication.h>
  22 #include <QX11Info>
  23 //Added by qt3to4:
  24 #include <QPixmap>
  25 #include <QEvent>
  26
  27 // this class is just like KPassivePopup, but it keeps track of the widget
  28 // it's supposed to be positioned next to, and adjust its position if that
  29 // widgets moves (needed because after a resolution switch Kicker will
  30 // reposition itself, causing normal KPassivePopup to stay at weird places)
  31
  32 KRandrPassivePopup::KRandrPassivePopup( QWidget *parent, Qt::WFlags f )
  33     : KPassivePopup( parent, f )
  34     {
  35     update_timer.setSingleShot( true );
  36     connect( &update_timer, SIGNAL( timeout()), SLOT( slotPositionSelf()));
  37     }
  38
  39 KRandrPassivePopup* KRandrPassivePopup::message( const QString &caption, const QString &text,
  40     const QPixmap &icon, QWidget *parent, int timeout )
  41     {
  42     KRandrPassivePopup *pop = new KRandrPassivePopup( parent );
  43     pop->setAutoDelete( true );
  44     pop->setView( caption, text, icon );
  45     pop->setTimeout( timeout );
  46     pop->show();
  47     pop->startWatchingWidget( parent );
  48     return pop;
  49     }
  50
  51 void KRandrPassivePopup::startWatchingWidget( QWidget* widget_P )
  52     {
  53     static Atom wm_state = XInternAtom( QX11Info::display() , "WM_STATE", False );
  54     Window win = widget_P->winId();
  55     bool x11_events = false;
  56     for(;;)
  57         {
  58         Window root, parent;
  59         Window* children;
  60         unsigned int nchildren;
  61         XQueryTree( QX11Info::display(), win, &root, &parent, &children, &nchildren );
  62         if( children != NULL )
  63             XFree( children );
  64         if( win == root ) // huh?
  65             break;
  66         win = parent;
  67
  68         QWidget* widget = QWidget::find( win );
  69         if( widget != NULL )
  70             {
  71             widget->installEventFilter( this );
  72             watched_widgets.append( widget );
  73             }
  74         else
  75             {
  76             XWindowAttributes attrs;
  77             XGetWindowAttributes( QX11Info::display(), win, &attrs );
  78             XSelectInput( QX11Info::display(), win, attrs.your_event_mask | StructureNotifyMask );
  79             watched_windows.append( win );
  80             x11_events = true;
  81             }
  82         Atom type;
  83         int format;
  84         unsigned long nitems, after;
  85         unsigned char* data;
  86         if( XGetWindowProperty( QX11Info::display(), win, wm_state, 0, 0, False, AnyPropertyType,
  87             &type, &format, &nitems, &after, &data ) == Success )
  88             {
  89             if( data != NULL )
  90                 XFree( data );
  91             if( type != None ) // toplevel window
  92                 break;
  93             }
  94         }
  95     if( x11_events )
  96         kapp->installX11EventFilter( this );
  97     }
  98
  99 bool KRandrPassivePopup::eventFilter( QObject* o, QEvent* e )
 100     {
 101     if( e->type() == QEvent::Move && o->isWidgetType()
 102         && watched_widgets.contains( static_cast< QWidget* >( o )))
 103         QTimer::singleShot( 0, this, SLOT( slotPositionSelf()));
 104     return false;
 105     }
 106
 107 bool KRandrPassivePopup::x11Event( XEvent* e )
 108     {
 109     if( e->type == ConfigureNotify && watched_windows.contains( e->xconfigure.window ) )
 110         {
 111         if( !update_timer.isActive() )
 112             update_timer.start( 10 );
 113         return false;
 114         }
 115     return KPassivePopup::x11Event( e );
 116     }
 117
 118 void KRandrPassivePopup::slotPositionSelf()
 119     {
 120     positionSelf();
 121     }
 122
 123 #include "krandrpassivepopup.moc"