Class TrueTypeFont

java.lang.Object
com.itextpdf.io.font.FontProgram
com.itextpdf.io.font.TrueTypeFont
Direct Known Subclasses:
DocTrueTypeFont
public class TrueTypeFont extends FontProgram

  • Field Details

    • fontParser

      private OpenTypeParser fontParser

    • bBoxes

      protected int[][] bBoxes

    • isVertical

      protected boolean isVertical

    • gsubTable

      private GlyphSubstitutionTableReader gsubTable

    • gposTable

      private GlyphPositioningTableReader gposTable

    • gdefTable

      private OpenTypeGdefTableReader gdefTable

    • kerning

      protected IntHashtable kerning
      The map containing the kerning information. It represents the content of table 'kern'. The key is an Integer where the top 16 bits are the glyph number for the first character and the lower 16 bits are the glyph number for the second character. The value is the amount of kerning in normalized 1000 units as an Integer. This value is usually negative.

    • fontStreamBytes

      private byte[] fontStreamBytes

  • Constructor Details

  • Method Details

    • hasKernPairs

      public boolean hasKernPairs()
      Overrides:
      hasKernPairs in class FontProgram

    • getKerning

      public int getKerning(Glyph first, Glyph second)
      Gets the kerning between two glyphs.
      Specified by:
      getKerning in class FontProgram
      Parameters:
      first - the first glyph
      second - the second glyph
      Returns:
      the kerning to be applied

    • isCff

      public boolean isCff()

    • getActiveCmap

      public Map<Integer,int[]> getActiveCmap()

    • getFontStreamBytes

      public byte[] getFontStreamBytes()

    • getPdfFontFlags

      public int getPdfFontFlags()
      Specified by:
      getPdfFontFlags in class FontProgram

    • getDirectoryOffset

      public int getDirectoryOffset()
      The offset from the start of the file to the table directory. It is 0 for TTF and may vary for TTC depending on the chosen font.
      Returns:
      directory Offset

    • getGsubTable

      public GlyphSubstitutionTableReader getGsubTable()

    • getGposTable

      public GlyphPositioningTableReader getGposTable()

    • getGdefTable

      public OpenTypeGdefTableReader getGdefTable()

    • getSubset

      public byte[] getSubset(Set<Integer> glyphs, boolean subset)

    • mapGlyphsCidsToGids

      public Set<Integer> mapGlyphsCidsToGids(Set<Integer> glyphs)
      Maps a set of glyph CIDs (as used in PDF file) to corresponding GID values (as a glyph primary identifier in the font file). This call is only meaningful for fonts that return true for isCff(). For other types of fonts, GID and CID are always the same, so that call would essentially return a set of the same values.
      Parameters:
      glyphs - a set of glyph CIDs
      Returns:
      a set of glyph ids corresponding to the passed glyph CIDs

    • isCmapPresent

      public boolean isCmapPresent(int platformID, int encodingID)
      Checks whether current TrueTypeFont program contains the “cmap” subtable with provided platform ID and encoding ID.
      Parameters:
      platformID - platform ID
      encodingID - encoding ID
      Returns:
      true if “cmap” subtable with provided platform ID and encoding ID is present in the font program, false otherwise

    • getNumberOfCmaps

      public int getNumberOfCmaps()
      Gets the number of the “cmap” subtables for the current TrueTypeFont program.
      Returns:
      the number of the “cmap” subtables

    • readGdefTable

      protected void readGdefTable() throws IOException
      Throws:
      IOException

    • readGsubTable

      protected void readGsubTable() throws IOException
      Throws:
      IOException

    • readGposTable

      protected void readGposTable() throws IOException
      Throws:
      IOException

    • initializeFontProperties

      private void initializeFontProperties() throws IOException
      Throws:
      IOException

    • getCodePagesSupported

      public String[] getCodePagesSupported()
      Gets the code pages supported by the font.
      Returns:
      the code pages supported by the font

    • isBuiltWith

      public boolean isBuiltWith(String fontProgram)
      Description copied from class: FontProgram
      Checks whether the FontProgram was built with corresponding fontName. Default value is false unless overridden.
      Overrides:
      isBuiltWith in class FontProgram
      Parameters:
      fontProgram - a font name or path to a font program
      Returns:
      true, if the FontProgram was built with the fontProgram. Otherwise false.

    • close

      public void close() throws IOException
      Throws:
      IOException

    • updateUsedGlyphs

      public void updateUsedGlyphs(SortedSet<Integer> usedGlyphs, boolean subset, List<int[]> subsetRanges)
      The method will update usedGlyphs with additional range or with all glyphs if there is no subset. This set of used glyphs can be used for building width array and ToUnicode CMAP.
      Parameters:
      usedGlyphs - a set of integers, which are glyph ids that denote used glyphs. This set is updated inside of the method if needed.
      subset - subset status
      subsetRanges - additional subset ranges

    • toCompactRange

      private static int[] toCompactRange(List<int[]> ranges)
      Normalizes given ranges by making sure that first values in pairs are lower than second values and merges overlapping ranges in one.
      Parameters:
      ranges - a List of integer arrays, which are constituted by pairs of ints that denote each range limits. Each integer array size shall be a multiple of two
      Returns:
      single merged array consisting of pairs of integers, each of them denoting a range