qfontengine_p.h

qt-x11-opensource-src-4.1.4.tar.gz源码

    QFixed lineThickness() const;

    Type type() const;

    bool canRender(const QChar *string, int len);
    inline const char *name() const { return 0; }
    inline bool drawAsOutline() const { return outline_drawing; }

    FT_Face face;
    bool smooth;
    bool outline_drawing;
    QGlyph **rendered_glyphs;
    QOpenType *_openType;
    enum { cmapCacheSize = 0x200 };
    mutable glyph_t cmapCache[cmapCacheSize];

    FaceId face_id;
    friend class QFontDatabase;
    static FT_Library ft_library;
};
#endif // QT_NO_FREETYPE

#ifndef QT_NO_QWS_QPF

class QFontEngineQPFData;

class QFontEngineQPF : public QFontEngine
{
public:
    QFontEngineQPF(const QFontDef&, const QString &fn);
   ~QFontEngineQPF();

    bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;

    void draw(QPaintEngine *p, qreal x, qreal y, const QTextItemInt &si);
    void addOutlineToPath(qreal x, qreal y, const QGlyphLayout *glyphs, int numGlyphs, QPainterPath *path, QTextItem::RenderFlags flags);

    glyph_metrics_t boundingBox(const QGlyphLayout *glyphs, int numGlyphs);
    glyph_metrics_t boundingBox(glyph_t glyph);

    QFixed ascent() const;
    QFixed descent() const;
    QFixed leading() const;
    qreal maxCharWidth() const;
    qreal minLeftBearing() const;
    qreal minRightBearing() const;
    QFixed underlinePosition() const;
    QFixed lineThickness() const;

    Type type() const;

    bool canRender(const QChar *string, int len);
    inline const char *name() const { return 0; }


    QFontEngineQPFData *d;
};
#endif // QT_NO_QWS_QPF

#endif // QWS


class QFontEngineBox : public QFontEngine
{
public:
    QFontEngineBox(int size);
    ~QFontEngineBox();

    bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;

#if !defined(Q_WS_X11) && !defined(Q_WS_WIN) && !defined(Q_WS_MAC)
    void draw(QPaintEngine *p, qreal x, qreal y, const QTextItemInt &si);
#endif
    void addOutlineToPath(qreal x, qreal y, const QGlyphLayout *glyphs, int numGlyphs, QPainterPath *path, QTextItem::RenderFlags flags);

    glyph_metrics_t boundingBox(const QGlyphLayout *glyphs, int numGlyphs);
    glyph_metrics_t boundingBox(glyph_t glyph);

    QFixed ascent() const;
    QFixed descent() const;
    QFixed leading() const;
    qreal maxCharWidth() const;
    qreal minLeftBearing() const { return 0; }
    qreal minRightBearing() const { return 0; }

#ifdef Q_WS_X11
    int cmap() const;
#endif
    const char *name() const;

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

    Type type() const;
    inline int size() const { return _size; }

private:
    friend class QFontPrivate;
    int _size;
};

class Q_GUI_EXPORT QFontEngineMulti : public QFontEngine
{
public:
    explicit QFontEngineMulti(int engineCount);
    ~QFontEngineMulti();

    bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs,
                      QTextEngine::ShaperFlags flags) const;

    glyph_metrics_t boundingBox(const QGlyphLayout *glyphs, int numGlyphs);
    glyph_metrics_t boundingBox(glyph_t glyph);

    void recalcAdvances(int , QGlyphLayout *, QTextEngine::ShaperFlags) const;
    void doKerning(int , QGlyphLayout *, QTextEngine::ShaperFlags) const;
    void addOutlineToPath(qreal, qreal, const QGlyphLayout *, int, QPainterPath *, QTextItem::RenderFlags flags);

    QFixed ascent() const;
    QFixed descent() const;
    QFixed leading() const;
    QFixed xHeight() const;

    QFixed lineThickness() const;
    QFixed underlinePosition() const;
    qreal maxCharWidth() const;
    qreal minLeftBearing() const;
    qreal minRightBearing() const;

    inline Type type() const
    { return QFontEngine::Multi; }

    bool canRender(const QChar *string, int len);
    inline const char *name() const
    { return "Multi"; }

    QFontEngine *engine(int at) const;

protected:
    friend class QPSPrintEnginePrivate;
    friend class QPSPrintEngineFontMulti;
    virtual void loadEngine(int at) = 0;
    QVector<QFontEngine *> engines;
};

#if defined(Q_WS_MAC)
#include "private/qt_mac_p.h"
#include "QtCore/qmap.h"
#include "QtCore/qcache.h"

#include "private/qcore_mac_p.h"

struct QShaperItem;
class QFontEngineMacMulti;

class QFontEngineMac : public QFontEngine
{
    friend class QFontEngineMacMulti;
public:
    QFontEngineMac(ATSUStyle baseStyle, FMFont font, const QFontDef &def, QFontEngineMacMulti *multiEngine = 0);
    virtual ~QFontEngineMac();

    virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;

    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 qreal maxCharWidth() const;

    virtual void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int numGlyphs,
                                 QPainterPath *path, QTextItem::RenderFlags);

    virtual const char *name() const { return "QFontEngineMac"; }

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

    virtual int synthesized() const { return synthesisFlags; }

    virtual Type type() const { return QFontEngine::Mac; }

    void draw(CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight);

    virtual FaceId faceId() const;
    virtual QByteArray getSfntTable(uint tag) const;
    virtual Properties properties() const;
    virtual void getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics);

private:
    FMFont fmFont;
    QCFType<CGFontRef> cgFont;
    ATSUStyle style;
    int synthesisFlags;
    mutable QGlyphLayout kashidaGlyph;
    QFontEngineMacMulti *multiEngine;
    mutable unsigned char *cmap;
    mutable bool symbolCMap;
};

class QFontEngineMacMulti : public QFontEngineMulti
{
    friend class QFontEngineMac;
public:
    QFontEngineMacMulti(const ATSFontFamilyRef &family, const QFontDef &fontDef, bool kerning);
    virtual ~QFontEngineMacMulti();

    virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;
    bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags,
                      QShaperItem *shaperItem) const;

    virtual void recalcAdvances(int , QGlyphLayout *, QTextEngine::ShaperFlags) const;
    virtual void doKerning(int , QGlyphLayout *, QTextEngine::ShaperFlags) const;

    virtual const char *name() const { return "ATSUI"; }

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

    inline ATSFontFamilyRef fontFamilyRef() const { return familyref; }

protected:
    virtual void loadEngine(int at);

private:
    inline const QFontEngineMac *engineAt(int i) const
    { return static_cast<const QFontEngineMac *>(engines.at(i)); }

    int fontIndexForFMFont(FMFont font) const;

    ATSFontFamilyRef familyref;
    uint kerning : 1;

    mutable ATSUTextLayout textLayout;
    mutable ATSUStyle style;
};

#endif

#if defined(Q_WS_X11)
#  include "private/qfontengine_x11_p.h"
#elif defined(Q_WS_WIN)
#  include "private/qfontengine_win_p.h"
#endif

class QTestFontEngine : public QFontEngineBox
{
public:
    QTestFontEngine(int size) : QFontEngineBox(size) {}
    Type type() const { return TestFontEngine; }
};

#endif // QFONTENGINE_P_H