org.apache.fop.render.java2d
Class FontMetricsMapper

java.lang.Object
  org.apache.fop.fonts.Typeface
      org.apache.fop.render.java2d.FontMetricsMapper

All Implemented Interfaces:

FontMetrics

public class FontMetricsMapper

extends Typeface

implements FontMetrics

This class implements org.apache.fop.layout.FontMetrics and is added to the hash table in FontInfo. It deferes the actual calculation of the metrics to Java2DFontMetrics. It only keeps the java name and style as member varibles

Constructor Summary

FontMetricsMapper(java.lang.String family, int style, java.awt.Graphics2D graphics)
Constructs a new Font-metrics.

Method Summary

int	getAscender(int size) Returns the ascent of the font described by this FontMetrics object.
int	getCapHeight(int size) Returns the size of a capital letter measured from the font's baseline.
int	getDescender(int size) Returns the descent of the font described by this FontMetrics object.
java.lang.String	getEncoding() Get the encoding of the font.
java.awt.Font	getFont(int size) Gets a Font instance of the Font that this FontMetrics describes in the desired size.
java.lang.String	getFontName() Returns the font name.
FontType	getFontType() Returns the type of the font.
java.util.Map	getKerningInfo() Returns the kerning map for the font.
int	getMaxAscent(int size) Returns the maximum ascent of the font described by this FontMetrics object.
int	getWidth(int i, int size) Return the width (in 1/1000ths of point size) of the character at code point i.
int[]	getWidths() Return the array of widths.
int	getXHeight(int size) Determines the typical font height of this FontMetrics object
boolean	hasChar(char c) Determines whether this font contains a particular character/glyph.
boolean	hasKerningInfo() Indicates if the font has kering information.
char	mapChar(char c) Map a Unicode character to a code point in the font.

Methods inherited from class org.apache.fop.fonts.Typeface

isMultiByte

Methods inherited from class java.lang.Object

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

Constructor Detail

FontMetricsMapper

public FontMetricsMapper(java.lang.String family,
                         int style,
                         java.awt.Graphics2D graphics)

Constructs a new Font-metrics.

Parameters:

family - the family name of the font (java value)

style - the java type style value of the font

graphics - a Graphics2D object - this is needed so that we can get an instance of java.awt.FontMetrics

Method Detail

getFontName

public java.lang.String getFontName()

Description copied from interface: FontMetrics

Returns the font name.

Specified by:

getFontName in interface FontMetrics

Returns:

the font name

See Also:

FontMetrics.getFontName()

getFontType

public FontType getFontType()

Description copied from interface: FontMetrics

Returns the type of the font.

Specified by:

getFontType in interface FontMetrics

Returns:

the font type

See Also:

FontMetrics.getFontType()

getMaxAscent

public int getMaxAscent(int size)

Description copied from interface: FontMetrics

Returns the maximum ascent of the font described by this FontMetrics object. Note: This is not the same as getAscender().

Specified by:

getMaxAscent in interface FontMetrics

Overrides:

getMaxAscent in class Typeface

See Also:

FontMetrics.getMaxAscent(int)

getAscender

public int getAscender(int size)

Description copied from interface: FontMetrics

Returns the ascent of the font described by this FontMetrics object. It returns the nominal ascent within the em box.

Specified by:

getAscender in interface FontMetrics

Parameters:

size - font size

Returns:

ascent in milliponts

See Also:

FontMetrics.getAscender(int)

getCapHeight

public int getCapHeight(int size)

Description copied from interface: FontMetrics

Returns the size of a capital letter measured from the font's baseline.

Specified by:

getCapHeight in interface FontMetrics

Parameters:

size - font size

Returns:

height of capital characters

See Also:

FontMetrics.getCapHeight(int)

getDescender

public int getDescender(int size)

Description copied from interface: FontMetrics

Returns the descent of the font described by this FontMetrics object.

Specified by:

getDescender in interface FontMetrics

Parameters:

size - font size

Returns:

descent in milliponts

See Also:

FontMetrics.getDescender(int)

getXHeight

public int getXHeight(int size)

Description copied from interface: FontMetrics

Determines the typical font height of this FontMetrics object

Specified by:

getXHeight in interface FontMetrics

Parameters:

size - font size

Returns:

font height in millipoints

See Also:

FontMetrics.getXHeight(int)

getWidth

public int getWidth(int i,
                    int size)

Description copied from interface: FontMetrics

Return the width (in 1/1000ths of point size) of the character at code point i.

Specified by:

getWidth in interface FontMetrics

Parameters:

i - code point index

size - font size

Returns:

the width of the character

See Also:

FontMetrics.getWidth(int, int)

getWidths

public int[] getWidths()

Description copied from interface: FontMetrics

Return the array of widths.

This is used to get an array for inserting in an output format. It should not be used for lookup.

Specified by:

getWidths in interface FontMetrics

Returns:

an array of widths

See Also:

FontMetrics.getWidths()

getFont

public java.awt.Font getFont(int size)

Gets a Font instance of the Font that this FontMetrics describes in the desired size.

Parameters:

size - font size

Returns:

font with the desired characeristics.

getKerningInfo

public java.util.Map getKerningInfo()

Description copied from interface: FontMetrics

Returns the kerning map for the font.

Specified by:

getKerningInfo in interface FontMetrics

Returns:

the kerning map

See Also:

FontMetrics.getKerningInfo()

hasKerningInfo

public boolean hasKerningInfo()

Description copied from interface: FontMetrics

Indicates if the font has kering information.

Specified by:

hasKerningInfo in interface FontMetrics

Returns:

True, if kerning is available.

See Also:

FontMetrics.hasKerningInfo()

getEncoding

public java.lang.String getEncoding()

Description copied from class: Typeface

Get the encoding of the font.

Specified by:

getEncoding in class Typeface

Returns:

the encoding

See Also:

Typeface.getEncoding()

mapChar

public char mapChar(char c)

Description copied from class: Typeface

Map a Unicode character to a code point in the font.

Specified by:

mapChar in class Typeface

Parameters:

c - character to map

Returns:

the mapped character

See Also:

Typeface.mapChar(char)

hasChar

public boolean hasChar(char c)

Description copied from class: Typeface

Determines whether this font contains a particular character/glyph.

Specified by:

hasChar in class Typeface

Parameters:

c - character to check

Returns:

True if the character is supported, Falso otherwise

See Also:

Typeface.hasChar(char)