showdesktop.cpp

thes is veer good (ksmoutTool)

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Copyright (c) 1996-2001,2002 the kicker authors. See file AUTHORS.

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#include <kwinmodule.h>
#include <netwm.h>
#include <kwin.h>

#include "showdesktop.h"
#include "showdesktop.moc"

ShowDesktop* ShowDesktop::the()
{
    static ShowDesktop showDesktop;
    return &showDesktop;
}

ShowDesktop::ShowDesktop()
  : QObject()
  , showingDesktop( false )
  , kWinModule( 0 )
{
    kWinModule = new KWinModule( this );

    // on desktop changes or when a window is deiconified, we abort the show desktop mode
    connect( kWinModule, SIGNAL(currentDesktopChanged(int)),
             SLOT(slotCurrentDesktopChanged(int)));
    connect( kWinModule, SIGNAL(windowChanged(WId,unsigned int)),
             SLOT(slotWindowChanged(WId,unsigned int)));
}

void ShowDesktop::slotCurrentDesktopChanged(int)
{
    //showDesktop( false ); // this will cause a bunch of attention-demanding tasks
}

void ShowDesktop::slotWindowChanged(WId w, unsigned int dirty)
{
    if ( !showingDesktop )
	return;

    // SELI this needs checking for kwin_iii (_NET_SHOWING_DESKTOP)
    if ( dirty & NET::XAWMState ) {
    KWin::WindowInfo info(w, 0, 0);
    NET::WindowType type = info.windowType(0xffff);
	if ( (type == NET::Normal || type == NET::Unknown )
	     && info.mappingState() == NET::Visible ) {
	    // a window was deiconified, abort the show desktop mode.
	    iconifiedList.clear();
	    showingDesktop = false;
	    emit desktopShown( false );
	}
    }
}

void ShowDesktop::showDesktop( bool b )
{
    if( b == showingDesktop ) return;
    showingDesktop = b;

    if ( b ) {
        // this code should move to KWin after supporting NETWM1.2
        KWinModule wm;
        activeWin = wm.activeWindow();
    
        iconifiedList.clear();
        const QValueList<WId> windows = kWinModule->windows();
        QValueList<WId>::ConstIterator it;
        
        for ( it=windows.begin(); it!=windows.end(); ++it ) {
            WId w = *it;
            NETWinInfo info( qt_xdisplay(), w, qt_xrootwin(),
		  NET::XAWMState | NET::WMDesktop );
            if ( info.mappingState() == NET::Visible &&
                    ( info.desktop() == NETWinInfo::OnAllDesktops
            || info.desktop() == (int) kWinModule->currentDesktop() )
            ) {
                iconifiedList.append( w );
            }
        }
        // find first, hide later, otherwise transients may get minimized
        // with the window they're transient for
        for ( it=iconifiedList.begin(); it!=iconifiedList.end(); ++it ) {
            KWin::iconifyWindow( *it, false );
        }
    } else {
        QValueList<WId>::ConstIterator it;
        for ( it=iconifiedList.begin(); it!=iconifiedList.end(); ++it ) {
	   KWin::deIconifyWindow( *it, false  );
        }
        KWin::activateWindow(activeWin);
    }

    emit desktopShown( showingDesktop );
}