org.apache.fop.fonts

## Class CustomFont

- java.lang.Object
- - org.apache.fop.fonts.Typeface
  - - org.apache.fop.fonts.CustomFont

- All Implemented Interfaces:
    FontDescriptor, FontMetrics, MutableFont
  Direct Known Subclasses:
    CIDFont, SingleByteFont

      public abstract class CustomFont
      extends Typeface
      implements FontDescriptor, MutableFont

  Abstract base class for custom fonts loaded from files, for example.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected java.util.List<SimpleSingleByteEncoding>` | `additionalEncodings`
    `protected java.util.List<CMapSegment>` | `cmap` the character map, mapping Unicode ranges to glyph indices.
    `protected java.util.Map<java.lang.Character,SingleByteFont.UnencodedCharacter>` | `unencodedCharacters`

    - ### Fields inherited from class org.apache.fop.fonts.Typeface

      `eventListener, NOT_FOUND`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `CustomFont(InternalResourceResolver resourceResolver)`

  - ### Method Summary

    All Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addUnencodedCharacter(NamedCharacter ch, int width, java.awt.Rectangle bbox)` Adds an unencoded character (one that is not supported by the primary encoding).
    `SimpleSingleByteEncoding` | `getAdditionalEncoding(int index)` Returns an additional encoding.
    `int` | `getAdditionalEncodingCount()` Returns the number of additional encodings this single-byte font maintains.
    `int` | `getAscender()` Returns the ascender value of the font.
    `int` | `getAscender(int size)` Returns the ascent of the font described by this FontMetrics object.
    `int` | `getCapHeight()` Returns the capital height of the font.
    `int` | `getCapHeight(int size)` Returns the size of a capital letter measured from the font's baseline.
    `CMapSegment[]` | `getCMap()` Returns the character map for this font.
    `int` | `getDescender()` Returns the descender value of the font.
    `int` | `getDescender(int size)` Returns the descent of the font described by this FontMetrics object.
    `EmbeddingMode` | `getEmbeddingMode()` Returns the embedding mode for this font.
    `java.net.URI` | `getEmbedFileURI()` Returns an URI representing an embeddable font file.
    `java.lang.String` | `getEmbedFontName()` Returns the font name for font embedding (may include a prefix, Example: "1E28bcArialMT").
    `java.lang.String` | `getEmbedResourceName()` Returns the lookup name to an embeddable font file available as a resource.
    `java.util.Set<java.lang.String>` | `getFamilyNames()` Returns the font family names.
    `int` | `getFirstChar()` Returns the index of the first character defined in this font.
    `int` | `getFlags()` Returns the flags for the font.
    `int[]` | `getFontBBox()` Returns the font's bounding box.
    `java.lang.String` | `getFontName()` Returns the "PostScript" font name (Example: "Helvetica-BoldOblique").
    `java.lang.String` | `getFontSubName()` Returns font's subfamily name.
    `FontType` | `getFontType()` Returns the type of the font.
    `java.net.URI` | `getFontURI()` Returns the URI of the font file from which these metrics were loaded.
    `java.lang.String` | `getFullName()` Returns the font's full name (Example: "Helvetica Bold Oblique").
    `java.io.InputStream` | `getInputStream()` Returns an `InputStream` representing an embeddable font file.
    `int` | `getItalicAngle()` Returns the italic angle for the font.
    `java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>>` | `getKerningInfo()` Returns the kerning map for the font.
    `int` | `getLastChar()` Returns the index of the last character defined in this font.
    `int` | `getMissingWidth()` Returns the width to be used when no width is available.
    `boolean` | `getSimulateStyle()`
    `int` | `getStemV()` Returns the vertical stem width for the font.
    `int` | `getStrikeoutPosition(int size)` Returns the distance from the baseline to the center of the strikeout line (negative value indicates below baseline).
    `int` | `getStrikeoutThickness(int size)` Returns the thickness of the strikeout line.
    `java.lang.String` | `getStrippedFontName()` Returns the font family name stripped of whitespace.
    `int` | `getUnderlinePosition(int size)` Returns the distance from the baseline to the center of the underline (negative value indicates below baseline).
    `int` | `getUnderlineThickness(int size)` Returns the thickness of the underline.
    `abstract char` | `getUnicodeFromGID(int glyphIndex)` Returns the character from it's original glyph index in the font
    `abstract java.util.Map<java.lang.Integer,java.lang.Integer>` | `getUsedGlyphs()` Returns a Map of used Glyphs.
    `int` | `getWeight()` Returns the font weight (100, 200...800, 900).
    `int` | `getXHeight(int size)` Determines the typical font height of this FontMetrics object
    `boolean` | `hasAdditionalEncodings()` Indicates whether the encoding has additional encodings besides the primary encoding.
    `boolean` | `hasKerningInfo()` Indicates if the font has kerning information.
    `boolean` | `isAdvancedEnabled()` Used to determine if advanced typographic features are enabled.
    `boolean` | `isKerningEnabled()` Used to determine if kerning is enabled.
    `boolean` | `isSymbolicFont()` Indicates whether the font is a symbolic font.
    `protected char` | `mapUnencodedChar(char ch)` Adds a character to additional encodings
    `void` | `putKerningEntry(java.lang.Integer key, java.util.Map<java.lang.Integer,java.lang.Integer> value)` Adds an entry to the kerning table.
    `void` | `replaceKerningMap(java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> kerningMap)` Replaces the existing kerning map with a new one.
    `void` | `setAdvancedEnabled(boolean enabled)` Enables/disabled advanced typographic features.
    `void` | `setAscender(int ascender)` Sets the ascent value.
    `void` | `setCapHeight(int capHeight)` Sets the capital height value.
    `void` | `setCMap(CMapSegment[] cmap)` Sets the character map for this font.
    `void` | `setDescender(int descender)` Sets the descent value.
    `void` | `setEmbeddingMode(EmbeddingMode embeddingMode)` Sets the embedding mode.
    `void` | `setEmbedResourceName(java.lang.String name)` Sets the resource name of the embeddable font file.
    `void` | `setEmbedURI(java.net.URI path)` Sets the URI to the embeddable font.
    `void` | `setFamilyNames(java.util.Set<java.lang.String> names)` Sets the font's family names (Example: "Helvetica").
    `void` | `setFirstChar(int index)` Sets the index of the first character in the character table.
    `void` | `setFlags(int flags)` Sets the font's flags
    `void` | `setFontBBox(int[] bbox)` Sets the font's bounding box
    `void` | `setFontName(java.lang.String name)` Sets the "PostScript" font name (Example: "Helvetica-BoldOblique").
    `void` | `setFontSubFamilyName(java.lang.String subFamilyName)` Sets the font's subfamily name.
    `void` | `setFontType(FontType fontType)` Sets the font type.
    `void` | `setFontURI(java.net.URI uri)` Sets the URI from which this font is or will be loaded.
    `void` | `setFullName(java.lang.String name)` Sets the font's full name (usually the one that the operating system displays).
    `void` | `setItalicAngle(int italicAngle)` Sets the font's italic angle.
    `void` | `setKerningEnabled(boolean enabled)` Enables/disabled kerning.
    `void` | `setLastChar(int index)` Sets the index of the last character in the character table.
    `void` | `setMissingWidth(int width)` Sets the font's default width
    `void` | `setSimulateStyle(boolean enabled)`
    `void` | `setStemV(int stemV)` Sets the font's StemV value.
    `void` | `setStrikeoutPosition(int strikeoutPosition)`
    `void` | `setStrikeoutThickness(int strikeoutThickness)`
    `void` | `setUnderlinePosition(int underlinePosition)`
    `void` | `setUnderlineThickness(int underlineThickness)`
    `void` | `setWeight(int weight)` Sets the font weight.
    `void` | `setXHeight(int xHeight)` Returns the XHeight value of the font.

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

      `getEncodingName, getMaxAscent, hadMappingOperations, hasChar, hasFeature, isCID, isMultiByte, mapChar, notifyMapOperation, setEventListener, toString, warnMissingGlyph`

    - ### Methods inherited from class java.lang.Object

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

    - ### Methods inherited from interface org.apache.fop.fonts.FontDescriptor

      `isEmbeddable, isSubsetEmbedded`

    - ### Methods inherited from interface org.apache.fop.fonts.FontMetrics

      `getBoundingBox, getMaxAscent, getWidth, getWidths, hasFeature, isMultiByte`

- - ### Field Detail

    - #### cmap

          protected java.util.List<CMapSegment> cmap

      the character map, mapping Unicode ranges to glyph indices.

    - #### additionalEncodings

          protected java.util.List<SimpleSingleByteEncoding> additionalEncodings

    - #### unencodedCharacters

          protected java.util.Map<java.lang.Character,SingleByteFont.UnencodedCharacter> unencodedCharacters

  - ### Constructor Detail

    - #### CustomFont

          public CustomFont(InternalResourceResolver resourceResolver)

      Parameters:
        `resourceResolver` - the URI resource resolver for controlling file access

  - ### Method Detail

    - #### getFontURI

          public java.net.URI getFontURI()

      Returns the URI of the font file from which these metrics were loaded.
      Specified by:
        `getFontURI` in interface `FontMetrics`
      Returns:
        the font file's URI

    - #### getFontName

          public java.lang.String getFontName()

      Returns the "PostScript" font name (Example: "Helvetica-BoldOblique").
      Specified by:
        `getFontName` in interface `FontMetrics`
      Returns:
        the font name

    - #### getEmbedFontName

          public java.lang.String getEmbedFontName()

      Returns the font name for font embedding (may include a prefix, Example: "1E28bcArialMT").
      Specified by:
        `getEmbedFontName` in interface `FontMetrics`
      Returns:
        the name for font embedding

    - #### getFullName

          public java.lang.String getFullName()

      Returns the font's full name (Example: "Helvetica Bold Oblique").
      Specified by:
        `getFullName` in interface `FontMetrics`
      Returns:
        the font's full name

    - #### getFamilyNames

          public java.util.Set<java.lang.String> getFamilyNames()

      Returns the font family names.
      Specified by:
        `getFamilyNames` in interface `FontMetrics`
      Returns:
        the font family names (a Set of Strings)

    - #### getStrippedFontName

          public java.lang.String getStrippedFontName()

      Returns the font family name stripped of whitespace.
      Returns:
        the stripped font family
      See Also:
        `FontUtil.stripWhiteSpace(String)`

    - #### getFontSubName

          public java.lang.String getFontSubName()

      Returns font's subfamily name.
      Returns:
        the font's subfamily name

    - #### getEmbedFileURI

          public java.net.URI getEmbedFileURI()

      Returns an URI representing an embeddable font file.
      Returns:
        URI to an embeddable font file or null if not available.

    - #### getEmbeddingMode

          public EmbeddingMode getEmbeddingMode()

      Returns the embedding mode for this font.
      Returns:
        embedding mode

    - #### getInputStream

          public java.io.InputStream getInputStream()
                                             throws java.io.IOException

      Returns an `InputStream` representing an embeddable font file.
      Returns:
        `InputStream` for an embeddable font file
      Throws:
        `java.io.IOException` - if embedFileName is not null but Source is not found

    - #### getEmbedResourceName

          public java.lang.String getEmbedResourceName()

      Returns the lookup name to an embeddable font file available as a resource. (todo) Remove this method, this should be done using a resource: URI.
      Returns:
        the lookup name

    - #### getAscender

          public int getAscender()

      Returns the ascender value of the font. (Ascent in pdf spec)
      Specified by:
        `getAscender` in interface `FontDescriptor`
      Returns:
        the ascender

    - #### getDescender

          public int getDescender()

      Returns the descender value of the font. (Descent in pdf spec)
      Specified by:
        `getDescender` in interface `FontDescriptor`
      Returns:
        the descender value

    - #### getCapHeight

          public int getCapHeight()

      Returns the capital height of the font.
      Specified by:
        `getCapHeight` in interface `FontDescriptor`
      Returns:
        the capital height

    - #### getAscender

          public int getAscender(int size)

      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

    - #### getDescender

          public int getDescender(int size)

      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

    - #### getCapHeight

          public int getCapHeight(int size)

      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

    - #### getXHeight

          public int getXHeight(int size)

      Determines the typical font height of this FontMetrics object
      Specified by:
        `getXHeight` in interface `FontMetrics`
      Parameters:
        `size` - font size
      Returns:
        font height in millipoints

    - #### getFontBBox

          public int[] getFontBBox()

      Returns the font's bounding box.
      Specified by:
        `getFontBBox` in interface `FontDescriptor`
      Returns:
        the bounding box

    - #### getFlags

          public int getFlags()

      Returns the flags for the font. (See pdf spec)
      Specified by:
        `getFlags` in interface `FontDescriptor`
      Returns:
        the flags

    - #### isSymbolicFont

          public boolean isSymbolicFont()

      Indicates whether the font is a symbolic font.
      Specified by:
        `isSymbolicFont` in interface `FontDescriptor`
      Returns:
        true if the font is a symbolic font (i.e. Symbol or ZapfDingbats)

    - #### getWeight

          public int getWeight()

      Returns the font weight (100, 200...800, 900). This value may be different from the one that was actually used to register the font.
      Returns:
        the font weight (or 0 if the font weight is unknown)

    - #### getStemV

          public int getStemV()

      Returns the vertical stem width for the font.
      Specified by:
        `getStemV` in interface `FontDescriptor`
      Returns:
        the vertical stem width

    - #### getItalicAngle

          public int getItalicAngle()

      Returns the italic angle for the font.
      Specified by:
        `getItalicAngle` in interface `FontDescriptor`
      Returns:
        the italic angle

    - #### getMissingWidth

          public int getMissingWidth()

      Returns the width to be used when no width is available.
      Returns:
        a character width

    - #### getFontType

          public FontType getFontType()

      Returns the type of the font.
      Specified by:
        `getFontType` in interface `FontMetrics`
      Returns:
        the font type

    - #### getFirstChar

          public int getFirstChar()

      Returns the index of the first character defined in this font.
      Returns:
        the index of the first character

    - #### getLastChar

          public int getLastChar()

      Returns the index of the last character defined in this font.
      Returns:
        the index of the last character

    - #### isKerningEnabled

          public boolean isKerningEnabled()

      Used to determine if kerning is enabled.
      Returns:
        True if kerning is enabled.

    - #### hasKerningInfo

          public final boolean hasKerningInfo()

      Indicates if the font has kerning information.
      Specified by:
        `hasKerningInfo` in interface `FontMetrics`
      Returns:
        true if kerning is available.

    - #### getKerningInfo

          public final java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> getKerningInfo()

      Returns the kerning map for the font.
      Specified by:
        `getKerningInfo` in interface `FontMetrics`
      Returns:
        the kerning map

    - #### isAdvancedEnabled

          public boolean isAdvancedEnabled()

      Used to determine if advanced typographic features are enabled. By default, this is false, but may be overridden by subclasses.
      Returns:
        true if enabled.

    - #### setFontURI

          public void setFontURI(java.net.URI uri)

      Sets the URI from which this font is or will be loaded.
      Specified by:
        `setFontURI` in interface `MutableFont`
      Parameters:
        `uri` - URI from which font is or will be loaded

    - #### setFontName

          public void setFontName(java.lang.String name)

      Sets the "PostScript" font name (Example: "Helvetica-BoldOblique").
      Specified by:
        `setFontName` in interface `MutableFont`
      Parameters:
        `name` - font name

    - #### setFullName

          public void setFullName(java.lang.String name)

      Sets the font's full name (usually the one that the operating system displays). Example: "Helvetica Bold Oblique".
      Specified by:
        `setFullName` in interface `MutableFont`
      Parameters:
        `name` - font' full name

    - #### setFamilyNames

          public void setFamilyNames(java.util.Set<java.lang.String> names)

      Sets the font's family names (Example: "Helvetica").
      Specified by:
        `setFamilyNames` in interface `MutableFont`
      Parameters:
        `names` - the font's family names (a Set of Strings)

    - #### setFontSubFamilyName

          public void setFontSubFamilyName(java.lang.String subFamilyName)

      Sets the font's subfamily name.
      Parameters:
        `subFamilyName` - the subfamily name of the font

    - #### setEmbedURI

          public void setEmbedURI(java.net.URI path)

      Sets the URI to the embeddable font.
      Specified by:
        `setEmbedURI` in interface `MutableFont`
      Parameters:
        `path` - URI to the font

    - #### setEmbedResourceName

          public void setEmbedResourceName(java.lang.String name)

      Sets the resource name of the embeddable font file.
      Specified by:
        `setEmbedResourceName` in interface `MutableFont`
      Parameters:
        `name` - resource name

    - #### setEmbeddingMode

          public void setEmbeddingMode(EmbeddingMode embeddingMode)

      Sets the embedding mode.
      Specified by:
        `setEmbeddingMode` in interface `MutableFont`
      Parameters:
        `embeddingMode` - the embedding mode

    - #### setCapHeight

          public void setCapHeight(int capHeight)

      Sets the capital height value.
      Specified by:
        `setCapHeight` in interface `MutableFont`
      Parameters:
        `capHeight` - capital height

    - #### setXHeight

          public void setXHeight(int xHeight)

      Returns the XHeight value of the font.
      Parameters:
        `xHeight` - the XHeight value

    - #### setAscender

          public void setAscender(int ascender)

      Sets the ascent value.
      Specified by:
        `setAscender` in interface `MutableFont`
      Parameters:
        `ascender` - ascent height

    - #### setDescender

          public void setDescender(int descender)

      Sets the descent value.
      Specified by:
        `setDescender` in interface `MutableFont`
      Parameters:
        `descender` - descent value

    - #### setFontBBox

          public void setFontBBox(int[] bbox)

      Sets the font's bounding box
      Specified by:
        `setFontBBox` in interface `MutableFont`
      Parameters:
        `bbox` - bounding box

    - #### setFlags

          public void setFlags(int flags)

      Sets the font's flags
      Specified by:
        `setFlags` in interface `MutableFont`
      Parameters:
        `flags` - flags

    - #### setWeight

          public void setWeight(int weight)

      Sets the font weight. Valid values are 100, 200...800, 900.
      Parameters:
        `weight` - the font weight

    - #### setStemV

          public void setStemV(int stemV)

      Sets the font's StemV value.
      Specified by:
        `setStemV` in interface `MutableFont`
      Parameters:
        `stemV` - StemV

    - #### setItalicAngle

          public void setItalicAngle(int italicAngle)

      Sets the font's italic angle.
      Specified by:
        `setItalicAngle` in interface `MutableFont`
      Parameters:
        `italicAngle` - italic angle

    - #### setMissingWidth

          public void setMissingWidth(int width)

      Sets the font's default width
      Specified by:
        `setMissingWidth` in interface `MutableFont`
      Parameters:
        `width` - default width

    - #### setFontType

          public void setFontType(FontType fontType)

      Sets the font type.
      Specified by:
        `setFontType` in interface `MutableFont`
      Parameters:
        `fontType` - font type

    - #### setFirstChar

          public void setFirstChar(int index)

      Sets the index of the first character in the character table.
      Specified by:
        `setFirstChar` in interface `MutableFont`
      Parameters:
        `index` - index of first character

    - #### setLastChar

          public void setLastChar(int index)

      Sets the index of the last character in the character table.
      Specified by:
        `setLastChar` in interface `MutableFont`
      Parameters:
        `index` - index of the last character

    - #### setKerningEnabled

          public void setKerningEnabled(boolean enabled)

      Enables/disabled kerning.
      Specified by:
        `setKerningEnabled` in interface `MutableFont`
      Parameters:
        `enabled` - True if kerning should be enabled if available

    - #### setAdvancedEnabled

          public void setAdvancedEnabled(boolean enabled)

      Enables/disabled advanced typographic features.
      Specified by:
        `setAdvancedEnabled` in interface `MutableFont`
      Parameters:
        `enabled` - true if advanced typographic features should be enabled if available

    - #### setSimulateStyle

          public void setSimulateStyle(boolean enabled)

    - #### getSimulateStyle

          public boolean getSimulateStyle()

    - #### putKerningEntry

          public void putKerningEntry(java.lang.Integer key,
                                      java.util.Map<java.lang.Integer,java.lang.Integer> value)

      Adds an entry to the kerning table.
      Specified by:
        `putKerningEntry` in interface `MutableFont`
      Parameters:
        `key` - Kerning key
        `value` - Kerning value

    - #### replaceKerningMap

          public void replaceKerningMap(java.util.Map<java.lang.Integer,java.util.Map<java.lang.Integer,java.lang.Integer>> kerningMap)

      Replaces the existing kerning map with a new one.
      Parameters:
        `kerningMap` - the kerning map (the integers are character codes)

    - #### setCMap

          public void setCMap(CMapSegment[] cmap)

      Sets the character map for this font. It maps all available Unicode characters to their glyph indices inside the font.
      Parameters:
        `cmap` - the character map

    - #### getCMap

          public CMapSegment[] getCMap()

      Returns the character map for this font. It maps all available Unicode characters to their glyph indices inside the font.
      Returns:
        the character map

    - #### getUnderlinePosition

          public int getUnderlinePosition(int size)

      Description copied from interface: `FontMetrics`
      Returns the distance from the baseline to the center of the underline (negative value indicates below baseline).
      Specified by:
        `getUnderlinePosition` in interface `FontMetrics`
      Parameters:
        `size` - font size
      Returns:
        the position in 1/1000ths of the font size

    - #### setUnderlinePosition

          public void setUnderlinePosition(int underlinePosition)

    - #### getUnderlineThickness

          public int getUnderlineThickness(int size)

      Description copied from interface: `FontMetrics`
      Returns the thickness of the underline.
      Specified by:
        `getUnderlineThickness` in interface `FontMetrics`
      Parameters:
        `size` - font size
      Returns:
        the thickness in 1/1000ths of the font size

    - #### setUnderlineThickness

          public void setUnderlineThickness(int underlineThickness)

    - #### getStrikeoutPosition

          public int getStrikeoutPosition(int size)

      Description copied from interface: `FontMetrics`
      Returns the distance from the baseline to the center of the strikeout line (negative value indicates below baseline).
      Specified by:
        `getStrikeoutPosition` in interface `FontMetrics`
      Parameters:
        `size` - font size
      Returns:
        the position in 1/1000ths of the font size

    - #### setStrikeoutPosition

          public void setStrikeoutPosition(int strikeoutPosition)

    - #### getStrikeoutThickness

          public int getStrikeoutThickness(int size)

      Description copied from interface: `FontMetrics`
      Returns the thickness of the strikeout line.
      Specified by:
        `getStrikeoutThickness` in interface `FontMetrics`
      Parameters:
        `size` - font size
      Returns:
        the thickness in 1/1000ths of the font size

    - #### setStrikeoutThickness

          public void setStrikeoutThickness(int strikeoutThickness)

    - #### getUsedGlyphs

          public abstract java.util.Map<java.lang.Integer,java.lang.Integer> getUsedGlyphs()

      Returns a Map of used Glyphs.
      Returns:
        Map Map of used Glyphs

    - #### getUnicodeFromGID

          public abstract char getUnicodeFromGID(int glyphIndex)

      Returns the character from it's original glyph index in the font
      Parameters:
        `glyphIndex` - The original index of the character
      Returns:
        The character

    - #### hasAdditionalEncodings

          public boolean hasAdditionalEncodings()

      Indicates whether the encoding has additional encodings besides the primary encoding.
      Returns:
        true if there are additional encodings.

    - #### getAdditionalEncodingCount

          public int getAdditionalEncodingCount()

      Returns the number of additional encodings this single-byte font maintains.
      Returns:
        the number of additional encodings

    - #### getAdditionalEncoding

          public SimpleSingleByteEncoding getAdditionalEncoding(int index)
                                                         throws java.lang.IndexOutOfBoundsException

      Returns an additional encoding.
      Parameters:
        `index` - the index of the additional encoding
      Returns:
        the additional encoding
      Throws:
        `java.lang.IndexOutOfBoundsException` - if the index is out of bounds

    - #### addUnencodedCharacter

          public void addUnencodedCharacter(NamedCharacter ch,
                                            int width,
                                            java.awt.Rectangle bbox)

      Adds an unencoded character (one that is not supported by the primary encoding).
      Parameters:
        `ch` - the named character
        `width` - the width of the character

    - #### mapUnencodedChar

          protected char mapUnencodedChar(char ch)

      Adds a character to additional encodings
      Parameters:
        `ch` - character to map

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