Class representing a TrueType/OpenType font parser. More...

#include <pdffontparsertruetype.h>

Inheritance diagram for wxPdfFontParserTrueType:

Public Member Functions
	wxPdfFontParserTrueType ()
	Default constructor.
virtual	~wxPdfFontParserTrueType ()
	Default destructor.
wxPdfFontData *	IdentifyFont (const wxString &fontFileName, int fontIndex)
	Identify font based on a font file.
bool	LoadFontData (wxPdfFontData *fontData)
	Load the font data.
int	GetCollectionFontCount (const wxString &fontFileName)
	Get the number of fonts within a font collection.
Public Member Functions inherited from wxPdfFontParser
	wxPdfFontParser ()
	Default constructor.
virtual	~wxPdfFontParser ()
	Default destructor.
void	SeekI (int offset)
	Seek to offset in default input stream.
void	SeekI (int offset, wxInputStream *stream)
	Seek to offset in specific input stream.
int	TellI ()
	Tell current position in default input stream.
int	TellI (wxInputStream *stream)
	Tell current position in specific input stream.
void	SkipBytes (int count)
	Skip bytes in default input stream.
void	SkipBytes (int count, wxInputStream *stream)
	Skip bytes in specific input stream.
int	ReadInt ()
	Read integer from default input stream.
short	ReadShort ()
	Read short integer from default input stream.
unsigned short	ReadUShort ()
	Read unsigned short integer from default input stream.
unsigned char	ReadByte ()
	Read byte from default input stream.
unsigned char	ReadByte (wxInputStream *stream)
	Read byte from specific input stream.
wxString	ReadString (int length)
	Read string from default input stream.
wxString	ReadString (int length, wxInputStream *stream)
	Read string from specific input stream.
wxString	ReadUnicodeString (int length)
	Read Unicode string from default input stream.
short	ReadShortLE (wxInputStream *stream)
	Read short integer from specific input stream in little endian mode.
unsigned short	ReadUShortLE (wxInputStream *stream)
	Read unsigned short integer from specific input stream in little endian mode.
unsigned int	ReadUIntLE (wxInputStream *stream)
	Read unsigned integer from specific input stream in little endian mode.
wxString	ReadString (wxInputStream &stream)
	Read string from specific input stream.

Protected Member Functions
void	ClearTableDirectory ()
	Clear the table directory.
void	LockTable (const wxString &tableName)
	Lock font table.
void	ReleaseTable ()
	Release font table.
int	CalculateChecksum (const char *b, size_t length)
	Calculate a check sum.
wxPdfFontData *	IdentifyFont ()
	Identify a font.
bool	PrepareFontData (wxPdfFontData *fontData)
	Prepare the font data.
bool	CheckTables ()
	Check whether the font contains all required tables.
void	CheckCff ()
	Check whether the font is in compact font format (CFF)
void	CheckRestrictions ()
	Check the font's access restrictions.
wxString	GetBaseFont ()
	Get the base name of the font.
wxArrayString	GetUniqueNames (int id)
	Get a list of unique names.
wxArrayString	GetNames (int id, bool namesOnly=true)
	Get font names.
wxString	GetEnglishName (int id)
	Get the English language font name.
bool	ReadMaps ()
	Read font maps.
bool	ReadGlyphWidths (int numberOfHMetrics, int unitsPerEm)
	Read the glyph widths.
void	ReadKerning (int unitsPerEm)
	Read kerning information.
bool	ReadTableDirectory ()
	Read table directory.
wxPdfCMap *	ReadFormat0 ()
	Read a Format 0 CMap.
wxPdfCMap *	ReadFormat4 ()
	Read a Format 4 CMap.
wxPdfCMap *	ReadFormat6 ()
	Read a Format 6 CMap.
wxPdfCMap *	ReadFormat12 ()
	Read a Format 12 CMap.
int	GetGlyphWidth (unsigned int glyph)
	Get the width of a specific glyph.

Protected Attributes
size_t	m_directoryOffset
	offset of the table directory
wxPdfTableDirectory *	m_tableDirectory
	table directory of the font
bool	m_isMacCoreText
	Flag whether a Mac Core Text font is to be parsed.
Protected Attributes inherited from wxPdfFontParser
wxString	m_fileName
	File name of the font file.
wxString	m_fontName
	Name of font.
wxInputStream *	m_inFont
	Font file input stream.
wxString	m_style
	Font style.

Detailed Description

Class representing a TrueType/OpenType font parser.

Constructor & Destructor Documentation

wxPdfFontParserTrueType::wxPdfFontParserTrueType ( )

Default constructor.

virtual wxPdfFontParserTrueType::~wxPdfFontParserTrueType ( )

virtual

Default destructor.

Member Function Documentation

int wxPdfFontParserTrueType::CalculateChecksum	(	const char *	b,
		size_t	length
	)

protected

Calculate a check sum.

void wxPdfFontParserTrueType::CheckCff ( )

protected

Check whether the font is in compact font format (CFF)

void wxPdfFontParserTrueType::CheckRestrictions ( )

protected

Check the font's access restrictions.

bool wxPdfFontParserTrueType::CheckTables ( )

protected

Check whether the font contains all required tables.

void wxPdfFontParserTrueType::ClearTableDirectory ( )

protected

Clear the table directory.

wxString wxPdfFontParserTrueType::GetBaseFont ( )

protected

Get the base name of the font.

Gets the Postscript font name.

Returns:: the Postscript font name

int wxPdfFontParserTrueType::GetCollectionFontCount ( const wxString & fontFileName )

Get the number of fonts within a font collection.

Parameters:

fontFileName the fully qualified name of the font collection file

Returns:: the number of fonts in the collection

wxString wxPdfFontParserTrueType::GetEnglishName ( int id )

protected

Get the English language font name.

Parameters:

id	the name id to retrieve

Returns:: the English font name

int wxPdfFontParserTrueType::GetGlyphWidth ( unsigned int glyph )

protected

Get the width of a specific glyph.

wxArrayString wxPdfFontParserTrueType::GetNames	(	int	id,
		bool	namesOnly = `true`
	)

protected

Get font names.

Extracts the names of the font in all the languages available. Optionally the platform, encoding and language identifiers are extracted as well. In the latter case 4 consecutive entries in the resulting string array represent a single font name.

Parameters:

id	the name id to retrieve
namesOnly	flag whether to extract only names or names and identifiers

Returns:: a list of font names

wxArrayString wxPdfFontParserTrueType::GetUniqueNames ( int id )

protected

Get a list of unique names.

Extracts the names of the font in all the languages available.

Parameters:

id	the name id to retrieve

Returns:: a list of unique names

wxPdfFontData* wxPdfFontParserTrueType::IdentifyFont	(	const wxString &	fontFileName,
		int	fontIndex
	)

Identify font based on a font file.

Parameters:

fontFileName	fully qualified name of the font file
fontIndex	the index of the font within a font collection (if appropriate)

Returns:: a reference to a new font data instance

wxPdfFontData* wxPdfFontParserTrueType::IdentifyFont ( )

protected

Identify a font.

bool wxPdfFontParserTrueType::LoadFontData ( wxPdfFontData * fontData )

Load the font data.

Before using a font it's data have be loaded into memory. This method tries to load the required font data for a previously identified font.

Parameters:

fontData the font data instance to be loaded

Returns:: TRUE if the font data could be loaded successfully, FALSE otherwise

void wxPdfFontParserTrueType::LockTable ( const wxString & tableName )

protected

Lock font table.

bool wxPdfFontParserTrueType::PrepareFontData ( wxPdfFontData * fontData )

protected

Prepare the font data.

wxPdfCMap* wxPdfFontParserTrueType::ReadFormat0 ( )

protected

Read a Format 0 CMap.

wxPdfCMap* wxPdfFontParserTrueType::ReadFormat12 ( )

protected

Read a Format 12 CMap.

wxPdfCMap* wxPdfFontParserTrueType::ReadFormat4 ( )

protected

Read a Format 4 CMap.

wxPdfCMap* wxPdfFontParserTrueType::ReadFormat6 ( )

protected

Read a Format 6 CMap.

bool wxPdfFontParserTrueType::ReadGlyphWidths	(	int	numberOfHMetrics,
		int	unitsPerEm
	)

protected

Read the glyph widths.

Reads the glyphs widths. The widths are extracted from the table 'hmtx'. The glyphs are normalized to 1000 units.

Parameters:

numberOfHMetrics
unitsPerEm

Returns:: TRUE if the glyph widths could be read successfully, FALSE otherwise

void wxPdfFontParserTrueType::ReadKerning ( int unitsPerEm )

protected

Read kerning information.

bool wxPdfFontParserTrueType::ReadMaps ( )

protected

Read font maps.

Reads the tables 'head', 'hhea', 'OS/2' and 'post' filling several variables.

Returns:: TRUE if the font maps could be read successfully, FALSE otherwise

bool wxPdfFontParserTrueType::ReadTableDirectory ( )

protected

Read table directory.

void wxPdfFontParserTrueType::ReleaseTable ( )

protected

Release font table.

Member Data Documentation

size_t wxPdfFontParserTrueType::m_directoryOffset

protected

offset of the table directory

bool wxPdfFontParserTrueType::m_isMacCoreText

protected

Flag whether a Mac Core Text font is to be parsed.

wxPdfTableDirectory* wxPdfFontParserTrueType::m_tableDirectory

protected

table directory of the font

The documentation for this class was generated from the following file:

pdffontparsertruetype.h

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation