src/gui/text/qabstractfontengine_p.h
author Alex Gilkes <alex.gilkes@nokia.com>
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QABSTRACTFONTENGINE_P_H
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#define QABSTRACTFONTENGINE_P_H
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//
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//  W A R N I N G
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//  -------------
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//
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// This file is not part of the Qt API.  It exists purely as an
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// implementation detail.  This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include "qfontengine_p.h"
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#include "qabstractfontengine_qws.h"
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QT_BEGIN_NAMESPACE
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class QCustomFontEngine;
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class QProxyFontEngine : public QFontEngine
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{
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    Q_OBJECT
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public:
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    QProxyFontEngine(QAbstractFontEngine *engine, const QFontDef &def);
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    virtual ~QProxyFontEngine();
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    virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;
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    virtual void recalcAdvances(QGlyphLayout *, QTextEngine::ShaperFlags) const;
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    virtual QImage alphaMapForGlyph(glyph_t);
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    virtual void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs, QPainterPath *path, QTextItem::RenderFlags flags);
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    virtual glyph_metrics_t boundingBox(const QGlyphLayout &glyphs);
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    virtual glyph_metrics_t boundingBox(glyph_t glyph);
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    virtual QFixed ascent() const;
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    virtual QFixed descent() const;
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    virtual QFixed leading() const;
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    virtual QFixed xHeight() const;
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    virtual QFixed averageCharWidth() const;
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    virtual QFixed lineThickness() const;
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    virtual QFixed underlinePosition() const;
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    virtual qreal maxCharWidth() const;
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    virtual qreal minLeftBearing() const;
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    virtual qreal minRightBearing() const;
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    virtual int glyphCount() const;
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    virtual bool canRender(const QChar *string, int len);
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    virtual Type type() const { return Proxy; }
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    virtual const char *name() const { return "proxy engine"; }
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#if !defined(Q_WS_X11) && !defined(Q_WS_WIN) && !defined(Q_WS_MAC) && !defined(Q_OS_SYMBIAN)
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    virtual void draw(QPaintEngine *, qreal, qreal, const QTextItemInt &);
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#endif
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    inline QAbstractFontEngine::Capabilities capabilities() const
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    { return engineCapabilities; }
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    bool drawAsOutline() const;
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private:
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    QAbstractFontEngine *engine;
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    QAbstractFontEngine::Capabilities engineCapabilities;
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};
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QT_END_NAMESPACE
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#endif