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    41 

    42 #ifndef QABSTRACTFONTENGINE_P_H

    43 #define QABSTRACTFONTENGINE_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists purely as an

    50 // implementation detail.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "qfontengine_p.h"

    57 #include "qabstractfontengine_qws.h"

    58 

    59 QT_BEGIN_NAMESPACE

    60 

    61 class QCustomFontEngine;

    62 

    63 class QProxyFontEngine : public QFontEngine

    64 {

    65     Q_OBJECT

    66 public:

    67     QProxyFontEngine(QAbstractFontEngine *engine, const QFontDef &def);

    68     virtual ~QProxyFontEngine();

    69 

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

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

    72     virtual QImage alphaMapForGlyph(glyph_t);

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

    74     virtual glyph_metrics_t boundingBox(const QGlyphLayout &glyphs);

    75     virtual glyph_metrics_t boundingBox(glyph_t glyph);

    76 

    77     virtual QFixed ascent() const;

    78     virtual QFixed descent() const;

    79     virtual QFixed leading() const;

    80     virtual QFixed xHeight() const;

    81     virtual QFixed averageCharWidth() const;

    82     virtual QFixed lineThickness() const;

    83     virtual QFixed underlinePosition() const;

    84     virtual qreal maxCharWidth() const;

    85     virtual qreal minLeftBearing() const;

    86     virtual qreal minRightBearing() const;

    87     virtual int glyphCount() const;

    88 

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

    90 

    91     virtual Type type() const { return Proxy; }

    92     virtual const char *name() const { return "proxy engine"; }

    93 

    94 #if !defined(Q_WS_X11) && !defined(Q_WS_WIN) && !defined(Q_WS_MAC) && !defined(Q_OS_SYMBIAN)

    95     virtual void draw(QPaintEngine *, qreal, qreal, const QTextItemInt &);

    96 #endif

    97 

    98     inline QAbstractFontEngine::Capabilities capabilities() const

    99     { return engineCapabilities; }

   100 

   101     bool drawAsOutline() const;

   102 

   103 private:

   104     QAbstractFontEngine *engine;

   105     QAbstractFontEngine::Capabilities engineCapabilities;

   106 };

   107 

   108 QT_END_NAMESPACE

   109 

   110 #endif