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42 #ifndef QABSTRACTFONTENGINE_P_H
43 #define QABSTRACTFONTENGINE_P_H
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.
56 #include "qfontengine_p.h"
57 #include "qabstractfontengine_qws.h"
61 class QCustomFontEngine;
63 class QProxyFontEngine : public QFontEngine
67 QProxyFontEngine(QAbstractFontEngine *engine, const QFontDef &def);
68 virtual ~QProxyFontEngine();
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);
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;
89 virtual bool canRender(const QChar *string, int len);
91 virtual Type type() const { return Proxy; }
92 virtual const char *name() const { return "proxy engine"; }
94 virtual void draw(QPaintEngine *, qreal, qreal, const QTextItemInt &);
96 inline QAbstractFontEngine::Capabilities capabilities() const
97 { return engineCapabilities; }
99 bool drawAsOutline() const;
102 QAbstractFontEngine *engine;
103 QAbstractFontEngine::Capabilities engineCapabilities;