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diff --git a/khtml/rendering/bidi.h b/khtml/rendering/bidi.h
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+/*
+ * This file is part of the html renderer for KDE.
+ *
+ * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2003 Apple Computer, Inc.
+ *
+ * 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 BIDI_H
+#define BIDI_H
+
+#include <qstring.h>
+
+namespace khtml {
+    class RenderArena;
+    class RenderBlock;
+    class RenderObject;
+    class InlineBox;
+
+    class BidiContext {
+    public:
+	BidiContext(unsigned char level, QChar::Direction embedding, BidiContext *parent = 0, bool override = false);
+	~BidiContext();
+
+	void ref() const;
+	void deref() const;
+
+	unsigned char level;
+	bool override : 1;
+	QChar::Direction dir : 5;
+	QChar::Direction basicDir : 5;
+
+	BidiContext *parent;
+
+
+	// refcounting....
+	mutable int count;
+    };
+
+    struct BidiRun {
+	BidiRun(int _start, int _stop, RenderObject *_obj, BidiContext *context, QChar::Direction dir)
+	    :  start( _start ), stop( _stop ), obj( _obj ), box(0), nextRun(0)
+	{
+	    if(dir == QChar::DirON) dir = context->dir;
+
+	    level = context->level;
+
+	    // add level of run (cases I1 & I2)
+	    if( level % 2 ) {
+		if(dir == QChar::DirL || dir == QChar::DirAN || dir == QChar::DirEN)
+		    level++;
+	    } else {
+		if( dir == QChar::DirR )
+		    level++;
+		else if( dir == QChar::DirAN || dir == QChar::DirEN)
+		    level += 2;
+	    }
+	}
+
+        void detach(RenderArena* renderArena);
+
+        // Overloaded new operator.
+        void* operator new(size_t sz, RenderArena* renderArena) throw();
+
+        // Overridden to prevent the normal delete from being called.
+        void operator delete(void* ptr, size_t sz);
+
+private:
+        // The normal operator new is disallowed.
+        void* operator new(size_t sz) throw();
+
+public:
+	int start;
+	int stop;
+
+        RenderObject *obj;
+        InlineBox* box;
+
+	// explicit + implicit levels here
+	uchar level;
+
+        bool compact : 1;
+
+        BidiRun* nextRun;
+    };
+
+    struct BidiIterator;
+    struct BidiState;
+
+}
+
+#endif