/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenVG module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QVGFONTGLYPHCACHE_H
#define QVGFONTGLYPHCACHE_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 <QtCore/qvarlengtharray.h>
#include <QtGui/private/qfontengine_p.h>

QT_BEGIN_NAMESPACE

class QVGPaintEnginePrivate;

class QVGFontGlyphCache
{
public:
    QVGFontGlyphCache();
    virtual ~QVGFontGlyphCache();

    virtual void cacheGlyphs(QVGPaintEnginePrivate *d,
                             QFontEngine *fontEngine,
                             const glyph_t *g, int count);
    void setScaleFromText(const QFont &font, QFontEngine *fontEngine);

    VGFont font;
    VGfloat scaleX;
    VGfloat scaleY;
    bool invertedGlyphs;
    uint cachedGlyphsMask[256 / 32];
    QSet<glyph_t> cachedGlyphs;
};

#if defined(Q_OS_SYMBIAN)
class QSymbianVGFontGlyphCache : public QVGFontGlyphCache
{
public:
    QSymbianVGFontGlyphCache();
    void cacheGlyphs(QVGPaintEnginePrivate *d,
                     QFontEngine *fontEngine,
                     const glyph_t *g, int count);
};
#endif

QT_END_NAMESPACE

#endif // QVGFONTGLYPHCACHE_H