Package org.apache.fop.complexscripts.scripts

Class ArabicScriptProcessor

java.lang.Object
org.apache.fop.complexscripts.scripts.ScriptProcessor
org.apache.fop.complexscripts.scripts.DefaultScriptProcessor
org.apache.fop.complexscripts.scripts.ArabicScriptProcessor
public class ArabicScriptProcessor extends DefaultScriptProcessor

The ArabicScriptProcessor class implements a script processor for performing glyph substitution and positioning operations on content associated with the Arabic script.

This work was originally authored by Glenn Adams (gadams@apache.org).

  • Method Details

    • getSubstitutionFeatures

      public String[] getSubstitutionFeatures()
      Obtain script specific required substitution features.
      Overrides:
      getSubstitutionFeatures in class DefaultScriptProcessor
      Returns:
      array of suppported substitution features or null

    • getSubstitutionContextTester

      public ScriptContextTester getSubstitutionContextTester()
      Obtain script specific substitution context tester.
      Overrides:
      getSubstitutionContextTester in class DefaultScriptProcessor
      Returns:
      substitution context tester or null

    • getPositioningFeatures

      public String[] getPositioningFeatures()
      Obtain script specific required positioning features.
      Overrides:
      getPositioningFeatures in class DefaultScriptProcessor
      Returns:
      array of suppported positioning features or null

    • getPositioningContextTester

      public ScriptContextTester getPositioningContextTester()
      Obtain script specific positioning context tester.
      Overrides:
      getPositioningContextTester in class DefaultScriptProcessor
      Returns:
      positioning context tester or null

    • reorderCombiningMarks

      public GlyphSequence reorderCombiningMarks(GlyphDefinitionTable gdef, GlyphSequence gs, int[] widths, int[][] gpa, String script, String language)
      Reorder combining marks in glyph sequence so that they precede (within the sequence) the base character to which they are applied. N.B. In the case of RTL segments, marks are not reordered by this, method since when the segment is reversed by BIDI processing, marks are automatically reordered to precede their base glyph.
      Overrides:
      reorderCombiningMarks in class DefaultScriptProcessor
      Parameters:
      gdef - the glyph definition table that applies
      gs - an input glyph sequence
      widths - associated unscaled advance widths (also reordered)
      gpa - associated glyph position adjustments (also reordered)
      script - a script identifier
      language - a language identifier
      Returns:
      the reordered (output) glyph sequence