/****************************************************************************
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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** file. Please review the following information to ensure the GNU Lesser
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** Public License version 3.0 as published by the Free Software Foundation
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****************************************************************************/

#ifndef DISTANCEFIELD_GLYPHNODE_H
#define DISTANCEFIELD_GLYPHNODE_H

#include <private/qsgadaptationlayer_p.h>
#include <QtQuick/qsgtexture.h>

#include <QtQuick/private/qquicktext_p.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QSGDistanceFieldGlyphCacheManager;
class QSGDistanceFieldTextMaterial;
class QSGDistanceFieldGlyphNode: public QSGGlyphNode
{
public:
    QSGDistanceFieldGlyphNode(QSGDistanceFieldGlyphCacheManager *cacheManager);
    ~QSGDistanceFieldGlyphNode();

    virtual QPointF baseLine() const { return m_baseLine; }
    virtual void setGlyphs(const QPointF &position, const QGlyphRun &glyphs);
    virtual void setColor(const QColor &color);

    virtual void setPreferredAntialiasingMode(AntialiasingMode mode);

    virtual void setStyle(QQuickText::TextStyle style);
    virtual void setStyleColor(const QColor &color);

    virtual void update();
    void preprocess();

    void invalidateGlyphs(const QVector<quint32> &glyphs);

    void updateGeometry();

private:
    void updateMaterial();

    QColor m_color;
    QPointF m_baseLine;
    QSGDistanceFieldTextMaterial *m_material;
    QPointF m_originalPosition;
    QPointF m_position;
    QGlyphRun m_glyphs;
    QSGDistanceFieldGlyphCacheManager *m_glyph_cacheManager;
    QSGDistanceFieldGlyphCache *m_glyph_cache;
    QSGGeometry m_geometry;
    QQuickText::TextStyle m_style;
    QColor m_styleColor;
    AntialiasingMode m_antialiasingMode;
    QRectF m_boundingRect;
    const QSGDistanceFieldGlyphCache::Texture *m_texture;
    QHash<const QSGDistanceFieldGlyphCache::Texture *, QSGDistanceFieldGlyphNode *> m_subNodes;
    QList<QSGDistanceFieldGlyphNode *> m_nodesToDelete;

    struct GlyphInfo {
        quint32 glyphIndex;
        QPointF position;
    };
    QSet<quint32> m_allGlyphIndexesLookup;
    QList<GlyphInfo> m_allGlyphs;

    uint m_dirtyGeometry: 1;
    uint m_dirtyMaterial: 1;
};

QT_END_HEADER

QT_END_NAMESPACE

#endif // DISTANCEFIELD_GLYPHNODE_H