/usr/include/podofo/doc/PdfFontMetricsObject.h is in libpodofo-dev 0.9.4-6.
This file is owned by root:root, with mode 0o644.
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* Copyright (C) 2010 by Dominik Seichter *
* domseichter@web.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Library General Public License as *
* published by the Free Software Foundation; either version 2 of the *
* License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* In addition, as a special exception, the copyright holders give *
* permission to link the code of portions of this program with the *
* OpenSSL library under certain conditions as described in each *
* individual source file, and distribute linked combinations *
* including the two. *
* You must obey the GNU General Public License in all respects *
* for all of the code used other than OpenSSL. If you modify *
* file(s) with this exception, you may extend this exception to your *
* version of the file(s), but you are not obligated to do so. If you *
* do not wish to do so, delete this exception statement from your *
* version. If you delete this exception statement from all source *
* files in the program, then also delete it here. *
***************************************************************************/
#ifndef _PDF_FONT_METRICS_OBJECT_H_
#define _PDF_FONT_METRICS_OBJECT_H_
#include "podofo/base/PdfDefines.h"
#include "podofo/base/PdfArray.h"
#include "podofo/base/PdfName.h"
#include "podofo/base/PdfString.h"
#include "PdfFontMetrics.h"
namespace PoDoFo {
class PdfArray;
class PdfObject;
class PdfVariant;
class PODOFO_DOC_API PdfFontMetricsObject : public PdfFontMetrics {
public:
/** Create a font metrics object based on an existing PdfObject
*
* \param pObject an existing font descriptor object
* \param pEncoding a PdfEncoding which will NOT be owned by PdfFontMetricsObject
*/
PdfFontMetricsObject( PdfObject* pFont, PdfObject* pDescriptor, const PdfEncoding* const pEncoding );
virtual ~PdfFontMetricsObject();
/** Create a width array for this font which is a required part
* of every font dictionary.
* \param var the final width array is written to this PdfVariant
* \param nFirst first character to be in the array
* \param nLast last character code to be in the array
* \param pEncoding encoding for correct character widths. If not passed default (latin1) encoding is used
*/
virtual void GetWidthArray( PdfVariant & var, unsigned int nFirst, unsigned int nLast, const PdfEncoding* pEncoding = NULL ) const;
/** Get the width of a single glyph id
*
* \returns the width of a single glyph id
*/
virtual double GetGlyphWidth( int nGlyphId ) const;
/** Get the width of a single named glyph
*
* \param pszGlyphname name of the glyph
* \returns the width of a single named glyph
*/
virtual double GetGlyphWidth( const char* pszGlyphname ) const;
/** Create the bounding box array as required by the PDF reference
* so that it can be written directly to a PDF file.
*
* \param array write the bounding box to this array.
*/
virtual void GetBoundingBox( PdfArray & array ) const;
/** Retrieve the width of the given character in PDF units in the current font
* \param c character
* \returns the width in PDF units
*/
virtual double CharWidth( unsigned char c ) const;
// Peter Petrov 20 March 2009
/** Retrieve the width of the given character in PDF units in the current font
* \param c character
* \returns the width in PDF units
*/
virtual double UnicodeCharWidth( unsigned short c ) const;
/** Retrieve the line spacing for this font
* \returns the linespacing in PDF units
*/
virtual double GetLineSpacing() const;
/** Get the width of the underline for the current
* font size in PDF units
* \returns the thickness of the underline in PDF units
*/
virtual double GetUnderlineThickness() const;
/** Return the position of the underline for the current font
* size in PDF units
* \returns the underline position in PDF units
*/
virtual double GetUnderlinePosition() const;
/** Return the position of the strikeout for the current font
* size in PDF units
* \returns the underline position in PDF units
*/
virtual double GetStrikeOutPosition() const;
/** Get the width of the strikeout for the current
* font size in PDF units
* \returns the thickness of the strikeout in PDF units
*/
virtual double GetStrikeoutThickness() const;
/** Get a string with the postscript name of the font.
* \returns the postscript name of the font or NULL string if no postscript name is available.
*/
virtual const char* GetFontname() const;
/** Get the weight of this font.
* Used to build the font dictionay
* \returns the weight of this font (500 is normal).
*/
virtual unsigned int GetWeight() const;
/** Get the ascent of this font in PDF
* units for the current font size.
*
* \returns the ascender for this font
*
* \see GetPdfAscent
*/
virtual double GetAscent() const;
/** Get the ascent of this font
* Used to build the font dictionay
* \returns the ascender for this font
*
* \see GetAscent
*/
virtual double GetPdfAscent() const;
/** Get the descent of this font in PDF
* units for the current font size.
* This value is usually negative!
*
* \returns the descender for this font
*
* \see GetPdfDescent
*/
virtual double GetDescent() const;
/** Get the descent of this font
* Used to build the font dictionay
* \returns the descender for this font
*
* \see GetDescent
*/
virtual double GetPdfDescent() const;
/** Get the italic angle of this font.
* Used to build the font dictionay
* \returns the italic angle of this font.
*/
virtual int GetItalicAngle() const;
/** Get the glyph id for a unicode character
* in the current font.
*
* \param lUnicode the unicode character value
* \returns the glyhph id for the character or 0 if the glyph was not found.
*/
virtual long GetGlyphId( long lUnicode ) const;
/** Symbol fonts do need special treatment in a few cases.
* Use this method to check if the current font is a symbol
* font. Symbold fonts are detected by checking
* if they use FT_ENCODING_MS_SYMBOL as internal encoding.
*
* \returns true if this is a symbol font
*/
virtual bool IsSymbol() const;
/** Get a pointer to the actual font data - if it was loaded from memory.
* \returns a binary buffer of data containing the font data
*/
virtual const char* GetFontData() const;
/** Get the length of the actual font data - if it was loaded from memory.
* \returns a the length of the font data
*/
virtual pdf_long GetFontDataLen() const;
private:
/** default constructor, not implemented
*/
PdfFontMetricsObject(void);
/** copy constructor, not implemented
*/
PdfFontMetricsObject(const PdfFontMetricsObject& rhs);
/** assignment operator, not implemented
*/
PdfFontMetricsObject& operator=(const PdfFontMetricsObject& rhs);
//Private members:
const PdfEncoding* const m_pEncoding;
PdfName m_sName;
PdfArray m_bbox;
PdfArray m_matrix;
PdfArray m_width;
PdfObject *m_missingWidth;
int m_nFirst;
int m_nLast;
unsigned int m_nWeight;
int m_nItalicAngle;
double m_dPdfAscent;
double m_dPdfDescent;
double m_dAscent;
double m_dDescent;
double m_dLineSpacing;
double m_dUnderlineThickness;
double m_dUnderlinePosition;
double m_dStrikeOutThickness;
double m_dStrikeOutPosition;
bool m_bSymbol; ///< Internal member to singnal a symbol font
double m_dDefWidth; ///< default width
};
};
#endif // _PDF_FONT_METRICS_OBJECT_H_
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