qfontengine_x11_p.h

奇趣公司比较新的qt/emd版本

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at [e-mail].
**
** In addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
** Exception version 1.0, which can be found at
** http://www.trolltech.com/products/qt/gplexception/ and in the file
** GPL_EXCEPTION.txt in this package.
**
** In addition, as a special exception, Trolltech, as the sole copyright
** holder for Qt Designer, grants users of the Qt/Eclipse Integration
** plug-in the right for the Qt/Eclipse Integration to link to
** functionality provided by Qt Designer and its related libraries.
**
** Trolltech reserves all rights not expressly granted herein.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QFONTENGINE_X11_P_H
#define QFONTENGINE_X11_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qt_x11_p.h>

#include <private/qfontengine_ft_p.h>

class QFreetypeFace;

// --------------------------------------------------------------------------

class QFontEngineMultiXLFD : public QFontEngineMulti
{
public:
    QFontEngineMultiXLFD(const QFontDef &r, const QList<int> &l, int s);
    ~QFontEngineMultiXLFD();

    void loadEngine(int at);

private:
    QList<int> encodings;
    int screen;
    QFontDef request;
};

class QFontEngineXLFD : public QFontEngine
{
public:
    QFontEngineXLFD(XFontStruct *f, const QByteArray &name, int mib);
    ~QFontEngineXLFD();

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

    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 addOutlineToPath(qreal x, qreal y, const QGlyphLayout *glyphs, int numGlyphs, QPainterPath *path, QTextItem::RenderFlags);
    QFixed ascent() const;
    QFixed descent() const;
    QFixed leading() const;
    qreal maxCharWidth() const;
    qreal minLeftBearing() const;
    qreal minRightBearing() const;

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

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

    inline XFontStruct *fontStruct() const
    { return _fs; }

#ifndef QT_NO_FREETYPE
    FT_Face non_locked_face() const;
    glyph_t glyphIndexToFreetypeGlyphIndex(glyph_t g) const;
#endif
    uint toUnicode(glyph_t g) const;

private:
    XFontStruct *_fs;
    QByteArray _name;
    QTextCodec *_codec;
    int _cmap;
    int lbearing, rbearing;
    mutable QFontEngine::FaceId face_id;
    mutable QFreetypeFace *freetype;
    mutable int synth;
};

#ifndef QT_NO_FONTCONFIG

class Q_GUI_EXPORT QFontEngineMultiFT : public QFontEngineMulti
{
public:
    QFontEngineMultiFT(QFontEngine *fe, FcPattern *p, int s, const QFontDef &request);
    ~QFontEngineMultiFT();

    void loadEngine(int at);

private:
    QFontDef request;
    FcPattern *pattern;
    FcFontSet *fontSet;
    int screen;
};

class Q_GUI_EXPORT QFontEngineX11FT : public QFontEngineFT
{
public:
    explicit QFontEngineX11FT(FcPattern *pattern, const QFontDef &fd, int screen);
    ~QFontEngineX11FT();

#ifndef QT_NO_XRENDER
    int xglyph_format;
#endif

protected:
    virtual bool uploadGlyphToServer(QGlyphSet *set, uint glyphid, Glyph *g, GlyphInfo *info, int glyphDataSize) const;
    virtual unsigned long allocateServerGlyphSet();
    virtual void freeServerGlyphSet(unsigned long id);
};

#endif // QT_NO_FONTCONFIG

#endif // QFONTENGINE_X11_P_H