net.sourceforge.wohenchan
Class HBFFont

java.lang.Object
  |
  +--net.sourceforge.wohenchan.HBFFont

public class HBFFont

extends java.lang.Object

Class hbf_font is used for manipulating HBF (Hanzi Bitmap Font) files for Chinese.

This font format is described in: http://www.ifcss.org/ftp-pub/software/info/HBF-1.1/

Sample HBF files can be downloaded from CND or IFCSS:

GB (simplified characters)

ftp://ftp.cnd.org/pub/software/fonts/gb/hbf/

ftp://ftp.ifcss.org/pub/software/fonts/gb/hbf/

Big5 (traditional characters)

ftp://ftp.cnd.org/pub/software/fonts/big5/hbf/

ftp://ftp.ifcss.org/pub/software/fonts/big5/hbf/

Field Summary

private java.lang.String	dirname
private HBFByte2Range[]	m_byte2Ranges
private int	m_byte2RangeTotal
private HBFCodeRange[]	m_codeRange
private int	m_fontAscent
private int	m_fontDescent
private int	m_pixelSize
static int	MAXIMUM_NARROW_CHAR

Constructor Summary

HBFFont(java.lang.String hbf_filename)
Opens and parses an HBF file.

Method Summary

private int	calculateRealOffset(char mychar, int idx)
byte[]	getarr(char mychar) Returns the bitmap corresponding to a character.
int	getFontAscent() Returns FONT_ASCENT as specified in the HBF file.
int	getFontDescent() Returns FONT_DESCENT as specified in the HBF file.
int	getPixelSize() Returns PIXEL_SIZE as specified in the HBF file.
private boolean	isNarrow(char mychar)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

m_byte2Ranges

private HBFByte2Range[] m_byte2Ranges

m_codeRange

private HBFCodeRange[] m_codeRange

m_byte2RangeTotal

private int m_byte2RangeTotal

m_pixelSize

private int m_pixelSize

m_fontAscent

private int m_fontAscent

m_fontDescent

private int m_fontDescent

dirname

private java.lang.String dirname

MAXIMUM_NARROW_CHAR

public static final int MAXIMUM_NARROW_CHAR

See Also:

Constant Field Values

Constructor Detail

HBFFont

public HBFFont(java.lang.String hbf_filename)
        throws java.io.FileNotFoundException

Opens and parses an HBF file.

Method Detail

getPixelSize

public final int getPixelSize()

Returns PIXEL_SIZE as specified in the HBF file.

getFontAscent

public final int getFontAscent()

Returns FONT_ASCENT as specified in the HBF file.

getFontDescent

public final int getFontDescent()

Returns FONT_DESCENT as specified in the HBF file.

calculateRealOffset

private int calculateRealOffset(char mychar,
                                int idx)
                         throws HBFByte2NotFoundException

HBFByte2NotFoundException

isNarrow

private boolean isNarrow(char mychar)

getarr

public byte[] getarr(char mychar)
              throws java.io.IOException,
                     HBFByte2NotFoundException

Returns the bitmap corresponding to a character. The length in bytes will be P*P/8 (for normal Chinese characters) or P*P/16 (for half-width ASCII characters) where P is the PIXEL_SIZE of the HBF font.

Throws:

HBFByte2NotFoundException - ???

java.io.IOException - codeRange.activateFile() throws this.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object