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diff --git a/korganizer/interfaces/calendar/calendardecoration.h b/korganizer/interfaces/calendar/calendardecoration.h
new file mode 100644
index 000000000..a6f487b7b
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+++ b/korganizer/interfaces/calendar/calendardecoration.h
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+/*
+    This file is part of the KOrganizer interfaces.
+
+    Copyright (c) 2001,2003 Cornelius Schumacher <schumacher@kde.org>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+#ifndef KORG_CALENDARDECORATION_H
+#define KORG_CALENDARDECORATION_H
+
+#include <qstring.h>
+#include <qdatetime.h>
+#include <qpixmap.h>
+
+#include <klibloader.h>
+
+#include "plugin.h"
+
+namespace KOrg {
+
+/**
+  This class provides the interface for a date dependent decoration.
+
+  It provides entities like texts and pictures for a given date. Implementations
+  can implement all functions or only a subset.
+*/
+class CalendarDecoration : public Plugin
+{
+  public:
+    static int interfaceVersion() { return 2; }
+    static QString serviceType() { return "Calendar/Decoration"; }
+
+    typedef QPtrList<CalendarDecoration> List;
+
+    CalendarDecoration() {}
+    virtual ~CalendarDecoration() {}
+
+    /**
+      Return a short text for a given date, ususally only a few words.
+    */
+    virtual QString shortText( const QDate & ) { return QString::null; }
+    /**
+      Return along text for a given date. This text can be of any length, but
+      usually it will have one or a few paragraphs.
+    */
+    virtual QString longText( const QDate & ) { return QString::null; }
+
+    /**
+      Return a small pixmap. The size should be something like 30x30 pixels.
+    */
+    virtual QPixmap smallPixmap( const QDate &) { return QPixmap(); }
+    /**
+      Return a large pixmap. The size should be something like 300x300 pixels.
+    */
+    virtual QPixmap largePixmap( const QDate &) { return QPixmap(); }
+
+    /**
+      Return a small widget. It should have the size of a pushbutton.
+    */
+    virtual QWidget *smallWidget( QWidget *, const QDate & ) { return 0; }
+};
+
+class CalendarDecorationFactory : public PluginFactory
+{
+  public:
+    virtual CalendarDecoration *create() = 0;
+};
+
+}
+
+#endif