/****************************************************************************
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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 QSGContext;
class QSGDistanceFieldGlyphCacheManager;
class QSGDistanceFieldTextMaterial;
class QSGDistanceFieldGlyphNode: public QSGGlyphNode, public QSGDistanceFieldGlyphConsumer
{
public:
    QSGDistanceFieldGlyphNode(QSGContext *context);
    ~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:
    enum DistanceFieldGlyphNodeType {
        RootGlyphNode,
        SubGlyphNode
    };

    void setGlyphNodeType(DistanceFieldGlyphNodeType type) { m_glyphNodeType = type; }
    void updateMaterial();

    DistanceFieldGlyphNodeType m_glyphNodeType;
    QColor m_color;
    QPointF m_baseLine;
    QSGContext *m_context;
    QSGDistanceFieldTextMaterial *m_material;
    QPointF m_originalPosition;
    QPointF m_position;
    QGlyphRun m_glyphs;
    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;
    QLinkedList<QSGNode *> m_nodesToDelete;

    struct GlyphInfo {
        QVector<quint32> indexes;
        QVector<QPointF> positions;
    };
    QSet<quint32> m_allGlyphIndexesLookup;

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

QT_END_HEADER

QT_END_NAMESPACE

#endif // DISTANCEFIELD_GLYPHNODE_H