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PkFontFile Class Reference

A specialization on FontFile for reading TeX-style .pk fonts. More...

#include <pkFontFile.h>

Inheritance diagram for PkFontFile:

List of all members.

Public Member Functions
	PkFontFile ()
virtual bool	read (const Filename &filename, bool extract_all, const string &extract_only)
	Attempts to read the font from the indicated file.
double	get_ds () const
	Returns the designed size of the font in points.
double	get_dpi () const
	Returns the resolution of the rasterized font in dots per inch.
double	get_vppp () const
	Returns the vertical pixels per point of the rasterized font characters.
double	get_hppp () const
	Returns the horizontal pixels per point of the rasterized font characters.
void	sort_chars_by_height ()
	Sorts the array of characters in the font as returned by get_char() so that the tallest ones appear first in the list.
int	get_num_chars () const
	Returns the number of characters (glyphs) read from the font.
CharBitmap *	get_char (int n) const
	Returns the nth character (glyph) read from the font.
Protected Types
typedef pvector< CharBitmap * >	Chars
Protected Attributes
double	_ds
double	_vppp
double	_hppp
Chars	_chars
Private Member Functions
unsigned int	fetch_nibble ()
	Returns the next 4-bit nibble from the pk stream.
unsigned int	fetch_packed_int ()
	Returns the next packed integer from the pk stream.
unsigned int	fetch_byte ()
	Returns the next 8-bit unsigned byte from the pk stream.
unsigned int	fetch_int (int n=4)
	Returns the next n-byte unsigned int from the pk stream.
int	fetch_signed_int (int n=4)
	Returns the next n-byte signed int from the pk stream.
bool	do_character (int flag_byte)
	Reads a single character from the pk file and processes it.
void	do_xxx (int num_bytes)
	The xxx1 ..
void	do_yyy ()
	The yyy command is an encoded number which might have meaning to a preceding xxx block, but means nothing to us.
void	do_post ()
	The beginning of the postamble.
void	do_pre ()
	The preamble.
bool	read_pk ()
Private Attributes
bool	_post
bool	_post_warning
int	_p
bool	_high
int	_dyn_f
int	_repeat_count
bool	_extract_all
string	_extract_only
pvector< unsigned char >	_pk

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Detailed Description

A specialization on FontFile for reading TeX-style .pk fonts.

Definition at line 38 of file pkFontFile.h.

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Member Typedef Documentation

typedef pvector<CharBitmap *> FontFile::Chars [protected, inherited]

Definition at line 67 of file fontFile.h.

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Constructor & Destructor Documentation

PkFontFile::PkFontFile (   )

Definition at line 506 of file pkFontFile.cxx. References Filename::open_read(), and Filename::set_binary().

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Member Function Documentation

bool PkFontFile::do_character (  int  flag_byte  )  [private]

Reads a single character from the pk file and processes it. Returns true if successful, false if something bad happened. Definition at line 691 of file pkFontFile.cxx.

void PkFontFile::do_post (   )  [private]

The beginning of the postamble. Definition at line 853 of file pkFontFile.cxx.

void PkFontFile::do_pre (   )  [private]

The preamble. Definition at line 866 of file pkFontFile.cxx. References _post, _post_warning, nout, and PK_NO_OP.

void PkFontFile::do_xxx (  int  num_bytes  )  [private]

The xxx1 .. xxx4 series of commands specify an embedded comment or some such silliness in the pk file that must be skipped. Definition at line 823 of file pkFontFile.cxx. References FontFile::_ds, FontFile::_hppp, _p, _pk, FontFile::_vppp, and nout.

void PkFontFile::do_yyy (   )  [private]

The yyy command is an encoded number which might have meaning to a preceding xxx block, but means nothing to us. Definition at line 840 of file pkFontFile.cxx.

unsigned int PkFontFile::fetch_byte (   )  [private]

Returns the next 8-bit unsigned byte from the pk stream. Definition at line 621 of file pkFontFile.cxx. References _p.

unsigned int PkFontFile::fetch_int (  int  n = 4  )  [private]

Returns the next n-byte unsigned int from the pk stream. Definition at line 638 of file pkFontFile.cxx. References _p, and _pk. Referenced by fetch_signed_int().

unsigned int PkFontFile::fetch_nibble (   )  [private]

Returns the next 4-bit nibble from the pk stream. Definition at line 559 of file pkFontFile.cxx. References _dyn_f.

unsigned int PkFontFile::fetch_packed_int (   )  [private]

Returns the next packed integer from the pk stream. Definition at line 580 of file pkFontFile.cxx.

int PkFontFile::fetch_signed_int (  int  n = 4  )  [private]

Returns the next n-byte signed int from the pk stream. Definition at line 662 of file pkFontFile.cxx. References _p, and fetch_int().

CharBitmap * FontFile::get_char (  int  n  )  const [inline, inherited]

Returns the nth character (glyph) read from the font. Definition at line 121 of file fontFile.I.

double FontFile::get_dpi (   )  const [inline, inherited]

Returns the resolution of the rasterized font in dots per inch. This is mainly useful for user information; use get_vppp() and get_hppp() for more precises measurements. Definition at line 55 of file fontFile.I. References FontFile::_vppp.

double FontFile::get_ds (   )  const [inline, inherited]

Returns the designed size of the font in points. This is the basic height of a line of text in the given font. Definition at line 36 of file fontFile.I. References FontFile::_vppp, and INLINE.

double FontFile::get_hppp (   )  const [inline, inherited]

Returns the horizontal pixels per point of the rasterized font characters. This is the number of pixels wide each bitmap characters is per point of font. Definition at line 93 of file fontFile.I.

int FontFile::get_num_chars (   )  const [inline, inherited]

Returns the number of characters (glyphs) read from the font. Definition at line 108 of file fontFile.I.

double FontFile::get_vppp (   )  const [inline, inherited]

Returns the vertical pixels per point of the rasterized font characters. This is the number of pixels high each bitmap characters is per point of font. Definition at line 74 of file fontFile.I. References FontFile::_chars, and INLINE.

bool PkFontFile::read (  const Filename &  filename, bool  extract_all, const string &  extract_only )  [virtual]

Attempts to read the font from the indicated file. Returns true if successful, false if there is an error. Implements FontFile. Definition at line 522 of file pkFontFile.cxx. References _pk.

bool PkFontFile::read_pk (   )  [private]

Definition at line 901 of file pkFontFile.cxx. References nout.

void FontFile::sort_chars_by_height (   )  [inherited]

Sorts the array of characters in the font as returned by get_char() so that the tallest ones appear first in the list. Definition at line 77 of file fontFile.cxx.

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Member Data Documentation

Chars FontFile::_chars [protected, inherited]

Definition at line 68 of file fontFile.h. Referenced by FontFile::get_vppp(), and FontFile::~FontFile().

double FontFile::_ds [protected, inherited]

Definition at line 63 of file fontFile.h. Referenced by do_xxx().

int PkFontFile::_dyn_f [private]

Definition at line 62 of file pkFontFile.h. Referenced by fetch_nibble().

bool PkFontFile::_extract_all [private]

Definition at line 65 of file pkFontFile.h.

string PkFontFile::_extract_only [private]

Definition at line 66 of file pkFontFile.h.

bool PkFontFile::_high [private]

Definition at line 61 of file pkFontFile.h.

double FontFile::_hppp [protected, inherited]

Definition at line 65 of file fontFile.h. Referenced by do_xxx().

int PkFontFile::_p [private]

Definition at line 60 of file pkFontFile.h. Referenced by do_xxx(), fetch_byte(), fetch_int(), and fetch_signed_int().

pvector<unsigned char> PkFontFile::_pk [private]

Definition at line 68 of file pkFontFile.h. Referenced by do_xxx(), fetch_int(), and read().

bool PkFontFile::_post [private]

Definition at line 58 of file pkFontFile.h. Referenced by do_pre().

bool PkFontFile::_post_warning [private]

Definition at line 59 of file pkFontFile.h. Referenced by do_pre().

int PkFontFile::_repeat_count [private]

Definition at line 63 of file pkFontFile.h.

double FontFile::_vppp [protected, inherited]

Definition at line 64 of file fontFile.h. Referenced by do_xxx(), FontFile::get_dpi(), and FontFile::get_ds().

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

• pandatool/src/egg-mkfont/pkFontFile.h
• pandatool/src/egg-mkfont/pkFontFile.cxx

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