Field Detail

• output

  protected byte[] output

• realSize

  protected int realSize

• currentPos

  protected int currentPos

• offsets

  protected java.util.Map<OFTableName,​java.lang.Integer> offsets

• locaOffset

  protected int locaOffset

• glyphOffsets

  protected int[] glyphOffsets

  Stores the glyph offsets so that we can end strings at glyph boundaries

• newDirTabs

  protected java.util.Map<OFTableName,​OFDirTabEntry> newDirTabs

  The dir tab entries in the new subset font.

Constructor Detail

• TTFSubSetFile

  public TTFSubSetFile()

  Default Constructor

• TTFSubSetFile

  public TTFSubSetFile​(boolean useKerning,
                       boolean useAdvanced)

  Constructor

  Parameters:

  useKerning - true if kerning data should be loaded

  useAdvanced - true if advanced typographic tables should be loaded

Method Detail

• createDirectory

  protected void createDirectory()

  Create the directory table

• createLoca

  protected void createLoca​(int size)
                     throws java.io.IOException

  Create an empty loca table without updating checksum

  Throws:

  java.io.IOException

• createCvt

  protected boolean createCvt​(FontFileReader in)
                       throws java.io.IOException

  Copy the cvt table as is from original font to subset font

  Throws:

  java.io.IOException

• createFpgm

  protected boolean createFpgm​(FontFileReader in)
                        throws java.io.IOException

  Copy the fpgm table as is from original font to subset font

  Throws:

  java.io.IOException

• createName

  protected boolean createName​(FontFileReader in)
                        throws java.io.IOException

  Copy the name table as is from the original.

  Throws:

  java.io.IOException

• createOS2

  protected boolean createOS2​(FontFileReader in)
                       throws java.io.IOException

  Copy the OS/2 table as is from the original.

  Throws:

  java.io.IOException

• createMaxp

  protected void createMaxp​(FontFileReader in,
                            int size)
                     throws java.io.IOException

  Copy the maxp table as is from original font to subset font and set num glyphs to size

  Throws:

  java.io.IOException

• createPost

  protected void createPost​(FontFileReader in)
                     throws java.io.IOException

  Throws:

  java.io.IOException

• createPrep

  protected boolean createPrep​(FontFileReader in)
                        throws java.io.IOException

  Copy the prep table as is from original font to subset font

  Throws:

  java.io.IOException

• createHhea

  protected void createHhea​(FontFileReader in,
                            int size)
                     throws java.io.IOException

  Copy the hhea table as is from original font to subset font and fill in size of hmtx table

  Throws:

  java.io.IOException

• createHead

  protected void createHead​(FontFileReader in)
                     throws java.io.IOException

  Copy the head table as is from original font to subset font and set indexToLocaFormat to long and set checkSumAdjustment to 0, store offset to checkSumAdjustment in checkSumAdjustmentOffset

  Throws:

  java.io.IOException

• buildSubsetIndexToOrigIndexMap

  protected int[] buildSubsetIndexToOrigIndexMap​(java.util.Map<java.lang.Integer,​java.lang.Integer> glyphs)

• createHmtx

  protected void createHmtx​(FontFileReader in,
                            java.util.Map<java.lang.Integer,​java.lang.Integer> glyphs)
                     throws java.io.IOException

  Create the hmtx table by copying metrics from original font to subset font. The glyphs Map contains an Integer key and Integer value that maps the original metric (key) to the subset metric (value)

  Throws:

  java.io.IOException

• readFont

  public void readFont​(FontFileReader in,
                       java.lang.String name,
                       java.lang.String header,
                       java.util.Map<java.lang.Integer,​java.lang.Integer> glyphs)
                throws java.io.IOException

  Reads a font and creates a subset of the font.

  Parameters:

  in - FontFileReader to read from

  name - Name to be checked for in the font file

  glyphs - Map of glyphs (glyphs has old index as (Integer) key and new index as (Integer) value)

  Throws:

  java.io.IOException - in case of an I/O problem

• getFontSubset

  public byte[] getFontSubset()

  Returns a subset of the fonts (readFont() MUST be called first in order to create the subset).

  Returns:

  byte array

• stream

  public void stream​(TTFOutputStream ttfOut)
              throws java.io.IOException

  Description copied from class: OpenFont
  Streams a font.

  Overrides:

  stream in class OpenFont

  Parameters:

  ttfOut - The interface for streaming TrueType tables.

  Throws:

  java.io.IOException - file write error

• scanGlyphs

  protected void scanGlyphs​(FontFileReader in,
                            java.util.Map<java.lang.Integer,​java.lang.Integer> subsetGlyphs)
                     throws java.io.IOException

  Throws:

  java.io.IOException

• writeBytes

  protected void writeBytes​(byte[] b)

• writeUShort

  protected void writeUShort​(int s)

  Appends a USHORT to the output array, updates currentPost but not realSize

• writeUShort

  protected void writeUShort​(int pos,
                             int s)

  Appends a USHORT to the output array, at the given position without changing currentPos

• writeULong

  protected void writeULong​(int pos,
                            int s)

  Appends a ULONG to the output array, at the given position without changing currentPos

• pad4

  protected void pad4()

  Create a padding in the fontfile to align on a 4-byte boundary

• updateCheckSum

  protected void updateCheckSum​(int tableStart,
                                int tableSize,
                                OFTableName tableName)

• getCheckSum

  protected static int getCheckSum​(byte[] data,
                                   int start,
                                   int size)

• createCheckSumAdjustment

  protected void createCheckSumAdjustment()