Instead of the somewhat fragile way of trying to clean up Client/Unmanaged

instances and keeping them around after the window is closed, create
class Deleted as a representation of a closed window.
(Why do I always forget 'svn add'?)


svn path=/branches/work/kwin_composite/; revision=626357

deleted.cpp

@@ -0,0 +1,69 @@
+/*****************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
+
+You can Freely distribute this program under the GNU General Public
+License. See the file "COPYING" for the exact licensing terms.
+******************************************************************/
+
+#include "deleted.h"
+
+#include "workspace.h"
+
+namespace KWinInternal
+{
+
+Deleted::Deleted( Workspace* ws )
+    : Toplevel( ws )
+    , delete_refcount( 1 )
+    {
+    }
+
+Deleted::~Deleted()
+    {
+    assert( delete_refcount == 0 );
+    workspace()->removeDeleted( this, Allowed );
+    }
+
+Deleted* Deleted::create( Toplevel* c )
+    {
+    Deleted* d = new Deleted( c->workspace());
+    d->copyToDeleted( c );
+    d->workspace()->addDeleted( d, Allowed );
+    return d;
+    }
+
+void Deleted::copyToDeleted( Toplevel* c )
+    {
+    assert( dynamic_cast< Deleted* >( c ) == NULL );
+    Toplevel::copyToDeleted( c );
+    window_opacity = c->opacity();
+    }
+
+void Deleted::unrefWindow()
+    {
+    if( --delete_refcount > 0 )
+        return;
+    deleteLater();
+    }
+
+NET::WindowType Deleted::windowType( bool direct, int supported_types ) const
+    {
+    return NET::Normal; // TODO
+    }
+
+double Deleted::opacity() const
+    {
+    return window_opacity;
+    }
+
+void Deleted::debug( kdbgstream& stream ) const
+    {
+    stream << "\'ID:" << handle() << "\' (deleted)";
+    }
+
+} // namespace
+
+#include "deleted.moc"

deleted.h

@@ -0,0 +1,47 @@
+/*****************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
+
+You can Freely distribute this program under the GNU General Public
+License. See the file "COPYING" for the exact licensing terms.
+******************************************************************/
+
+#ifndef KWIN_DELETED_H
+#define KWIN_DELETED_H
+
+#include "toplevel.h"
+
+namespace KWinInternal
+{
+
+class Deleted
+    : public Toplevel
+    {
+    Q_OBJECT
+    public:
+        static Deleted* create( Toplevel* c );
+        virtual double opacity() const;
+        // used by effects to keep the window around for e.g. fadeout effects when it's destroyed
+        void refWindow();
+        void unrefWindow();
+        virtual NET::WindowType windowType( bool direct = false, int supported_types = SUPPORTED_WINDOW_TYPES_MASK ) const;
+    protected:
+        virtual void debug( kdbgstream& stream ) const;
+    private:
+        Deleted( Workspace *ws ); // use create()
+        void copyToDeleted( Toplevel* c );
+        virtual ~Deleted(); // deleted only using unrefWindow()
+        int delete_refcount;
+        double window_opacity;
+    };
+
+inline void Deleted::refWindow()
+    {
+    ++delete_refcount;
+    }
+
+} // namespace
+
+#endif