org.apache.fop.render.afp.fonts
Class RasterFont

java.lang.Object
  org.apache.fop.render.afp.fonts.BaseFont
      org.apache.fop.render.afp.fonts.RasterFont

All Implemented Interfaces:

org.apache.fop.layout.FontMetric

public class RasterFont

extends BaseFont

A font where each character is stored as an array of pixels (a bitmap). Such fonts are not easily scalable, in contrast to vectored fonts. With this type of font, the font metrics information is held in character set files (one for each size and style).

Field Summary

protected static org.apache.commons.logging.Log

LOGGER Static logging instance

Fields inherited from class org.apache.fop.render.afp.fonts.BaseFont

_name, _style, _weight

Constructor Summary

RasterFont(java.lang.String name, java.lang.String weight, java.lang.String style)
Constructor for the raster font requires the name, weight and style attribute to be available as this forms the key to the font.

Method Summary

void	addCharacterSet(int size, CharacterSet characterSet)
int	getAscender(int size) The ascender is the part of a lowercase letter that extends above the "x-height" (the height of the letter "x"), such as "d", "t", or "h".
int	getCapHeight(int size) Obtains the height of capital letters for the specified point size.
CharacterSet	getCharacterSet(int size) Get the character set metrics for the specified point size.
int	getDescender(int size) The descender is the part of a lowercase letter that extends below the base line, such as "g", "j", or "p".
int	getFirstChar() Get the first character in this font.
int	getLastChar() Get the last character in this font.
int[]	getWidths(int size) Get the width (in 1/1000ths of a point size) of all characters in this character set.
int	getXHeight(int size) The "x-height" (the height of the letter "x").
int	width(int character, int size) Obtain the width of the character for the specified point size.

Methods inherited from class org.apache.fop.render.afp.fonts.BaseFont

getName, getStyle, getWeight

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

protected static final org.apache.commons.logging.Log LOGGER

Static logging instance

Constructor Detail

RasterFont

public RasterFont(java.lang.String name,
                  java.lang.String weight,
                  java.lang.String style)

Constructor for the raster font requires the name, weight and style attribute to be available as this forms the key to the font.

Parameters:

name - the name of the font

weight - the weight of the font

style - the style of the font

Method Detail

addCharacterSet

public void addCharacterSet(int size,
                            CharacterSet characterSet)

getCharacterSet

public CharacterSet getCharacterSet(int size)

Get the character set metrics for the specified point size.

Parameters:

size - the point size

Returns:

the character set metrics

getFirstChar

public int getFirstChar()

Get the first character in this font.

getLastChar

public int getLastChar()

Get the last character in this font.

getAscender

public int getAscender(int size)

The ascender is the part of a lowercase letter that extends above the "x-height" (the height of the letter "x"), such as "d", "t", or "h". Also used to denote the part of the letter extending above the x-height.

Parameters:

size - the point size

getCapHeight

public int getCapHeight(int size)

Obtains the height of capital letters for the specified point size.

Parameters:

size - the point size

getDescender

public int getDescender(int size)

The descender is the part of a lowercase letter that extends below the base line, such as "g", "j", or "p". Also used to denote the part of the letter extending below the base line.

Parameters:

size - the point size

getXHeight

public int getXHeight(int size)

The "x-height" (the height of the letter "x").

Parameters:

size - the point size

width

public int width(int character,
                 int size)

Obtain the width of the character for the specified point size.

getWidths

public int[] getWidths(int size)

Get the width (in 1/1000ths of a point size) of all characters in this character set.

Parameters:

size - the point size

Returns:

the widths of all characters