/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file.  Please review the following information
** to ensure GNU General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
** exception, Nokia gives you certain additional rights. These rights
** are described in the Nokia Qt GPL Exception version 1.3, included in
** the file GPL_EXCEPTION.txt in this package.
**
** Qt for Windows(R) Licensees
** As a special exception, Nokia, as the sole copyright holder for Qt
** Designer, grants users of the Qt/Eclipse Integration plug-in the
** right for the Qt/Eclipse Integration to link to functionality
** provided by Qt Designer and its related libraries.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
****************************************************************************/

#ifndef QABSTRACTFONTENGINE_P_H
#define QABSTRACTFONTENGINE_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "qfontengine_p.h"
#include "qabstractfontengine_qws.h"

QT_BEGIN_NAMESPACE

class QCustomFontEngine;

class QProxyFontEngine : public QFontEngine
{
    Q_OBJECT
public:
    QProxyFontEngine(QAbstractFontEngine *engine, const QFontDef &def);
    virtual ~QProxyFontEngine();

    virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;
    virtual QImage alphaMapForGlyph(glyph_t);
    virtual void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs, QPainterPath *path, QTextItem::RenderFlags flags);
    virtual glyph_metrics_t boundingBox(const QGlyphLayout *glyphs, int numGlyphs);
    virtual glyph_metrics_t boundingBox(glyph_t glyph);

    virtual QFixed ascent() const;
    virtual QFixed descent() const;
    virtual QFixed leading() const;
    virtual QFixed xHeight() const;
    virtual QFixed averageCharWidth() const;
    virtual QFixed lineThickness() const;
    virtual QFixed underlinePosition() const;
    virtual qreal maxCharWidth() const;
    virtual qreal minLeftBearing() const;
    virtual qreal minRightBearing() const;
    virtual int glyphCount() const;

    virtual bool canRender(const QChar *string, int len);

    virtual Type type() const { return Proxy; }
    virtual const char *name() const { return "proxy engine"; }

#if !defined(Q_WS_X11) && !defined(Q_WS_WIN) && !defined(Q_WS_MAC)
    virtual void draw(QPaintEngine *, qreal, qreal, const QTextItemInt &);
#endif

    inline QAbstractFontEngine::Capabilities capabilities() const
    { return engineCapabilities; }

    bool drawAsOutline() const;

private:
    QAbstractFontEngine *engine;
    QAbstractFontEngine::Capabilities engineCapabilities;
};

QT_END_NAMESPACE

#endif
