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15250 jghali 1
/*
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For general Scribus (>=1.3.2) copyright and licensing information please refer
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to the COPYING file provided with the program. Following this notice may exist
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a copyright and/or license notice that predates the release of Scribus 1.3.2
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for which a new license (GPL+exception) is in place.
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*/
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#ifndef FT_FACE_H
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#define FT_FACE_H
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#include <QString>
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#include <QMap>
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#include "scribusapi.h"
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#include "fonts/scface.h"
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include "fpointarray.h"
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FT_Error ftIOFunc( FT_Stream stream, unsigned long pos, unsigned char* buffer, unsigned long count);
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/*! \brief Base Class FtFace provides an ScFace private implementation
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     for Freetype based fonts. Subclasses are ScFace_ps and ScFace_ttf.
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Below is the old docs for class Foi:
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This is subclassed by a class to handle Type1 fonts, a class
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to handle TrueType fonts, and potentially any other type that becomes appropriate in
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the future.
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Note the virtual destructor, needed to ensure that the correct destructor is called
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for subclasses
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The RealName field has been changed from a data member to a member function.
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This is because the only place the PostScript real name of a font is required is
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the printing code, so it's cheaper to extract this information only when it is
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required, for just the used fonts, than for every one of potentially hundreds at
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application startup!  This also allows for the fact that truetype fonts will require
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a different method of extracting their names.
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One implication of using a base class/subclass model for fonts:  It is no longer
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possible to store the ScFace structures in a QMap.  This is because QMap allocates
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its own structures, and copies the supplied data to them.  A QMap<QString,ScFace>
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would demote all subclasses to ScFace classes, and hence break the polymorphism.
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QDict can be used instead, with very little change to the rest of the code, since
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it stores references to the data instead of copying the data.  With AutoDelete set
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to true, it will automatically dispose of all data when its destructor is called,
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so there are no extra cleaning-up chores to take care of.
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*/
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struct SCRIBUS_API FtFace : public ScFace::ScFaceData
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{
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        FtFace(QString fam, QString sty, QString variant, QString scname,
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                   QString psname, QString path, int face);
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        FT_Face ftFace() const;
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        virtual ~FtFace();
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        // font metrics
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        qreal ascent(qreal sz=1.0)    const { return m_ascent * sz; }
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        qreal descent(qreal sz=1.0)   const { return m_descent * sz; }
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        qreal xHeight(qreal sz=1.0)   const { return m_xHeight * sz; }
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        qreal capHeight(qreal sz=1.0) const { return m_capHeight * sz; }
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        qreal height(qreal sz=1.0)    const { return m_height * sz; }
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        qreal strikeoutPos(qreal sz=1.0)    const { return m_strikeoutPos * sz; }
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        qreal underlinePos(qreal sz=1.0)    const { return m_underlinePos * sz; }
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        qreal strokeWidth(qreal /*sz*/)     const { return m_strokeWidth; }
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        qreal maxAdvanceWidth(qreal sz=1.0) const { return m_maxAdvanceWidth * sz; }
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        QString pdfAscentAsString()      const { return m_pdfAscent; }
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        QString pdfDescentAsString()     const { return m_pdfDescender; }
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        QString pdfCapHeightAsString()   const { return m_pdfCapHeight; }
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        QString pdfFontBBoxAsString()    const { return m_pdfFontBBox; }
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        QString italicAngleAsString()    const { return m_italicAngle; }
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//FIXME QMap<QString,QString> fontDictionary(qreal sz=1.0)      const;
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        uint         char2CMap(QChar ch)                         const;
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        qreal       glyphKerning (uint gl1, uint gl2, qreal sz) const;
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//      GlyphMetrics glyphBBox (uint gl,               qreal sz) const;
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        void RawData   (QByteArray & bb)            const;
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        bool glyphNames(QMap<uint, std::pair<QChar, QString> >& GList) const;
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        void load      ()                           const;
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        void unload    ()                           const;
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        void loadGlyph (uint ch)                    const;
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protected:
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        mutable FT_Face m_face;
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        static FT_Library library;
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        mutable QString m_pdfAscent;
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        mutable QString m_pdfCapHeight;
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        mutable QString m_pdfDescender;
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        mutable QString m_italicAngle;
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        mutable QString m_pdfFontBBox;
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        mutable int m_encoding;
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        mutable qreal m_uniEM;
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        mutable qreal m_ascent;
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        mutable qreal m_descent;
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        mutable qreal m_height;
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        mutable qreal m_xHeight;
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        mutable qreal m_capHeight;
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        mutable qreal m_maxAdvanceWidth;
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        mutable qreal m_underlinePos;
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        mutable qreal m_strikeoutPos;
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        mutable qreal m_strokeWidth;
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};
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#endif