Package org.apache.fop.complexscripts.scripts

Class DefaultScriptProcessor

java.lang.Object
org.apache.fop.complexscripts.scripts.ScriptProcessor
org.apache.fop.complexscripts.scripts.DefaultScriptProcessor
Direct Known Subclasses:
ArabicScriptProcessor, HebrewScriptProcessor, IndicScriptProcessor, ThaiScriptProcessor
public class DefaultScriptProcessor extends ScriptProcessor

Default script processor, which enables default glyph composition/decomposition, common ligatures, localized forms and kerning.

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

  • Method Details

    • getSubstitutionFeatures

      public String[] getSubstitutionFeatures()
      Description copied from class: ScriptProcessor
      Obtain script specific required substitution features.
      Specified by:
      getSubstitutionFeatures in class ScriptProcessor
      Returns:
      array of suppported substitution features or null

    • getSubstitutionContextTester

      public ScriptContextTester getSubstitutionContextTester()
      Description copied from class: ScriptProcessor
      Obtain script specific substitution context tester.
      Specified by:
      getSubstitutionContextTester in class ScriptProcessor
      Returns:
      substitution context tester or null

    • getPositioningFeatures

      public String[] getPositioningFeatures()
      Description copied from class: ScriptProcessor
      Obtain script specific required positioning features.
      Specified by:
      getPositioningFeatures in class ScriptProcessor
      Returns:
      array of suppported positioning features or null

    • getPositioningContextTester

      public ScriptContextTester getPositioningContextTester()
      Description copied from class: ScriptProcessor
      Obtain script specific positioning context tester.
      Specified by:
      getPositioningContextTester in class ScriptProcessor
      Returns:
      positioning context tester or null

    • reorderCombiningMarks

      public GlyphSequence reorderCombiningMarks(GlyphDefinitionTable gdef, GlyphSequence gs, int[] unscaledWidths, int[][] gpa, String script, String language)
      Description copied from class: ScriptProcessor
      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 ScriptProcessor
      Parameters:
      gdef - the glyph definition table that applies
      gs - an input glyph sequence
      unscaledWidths - 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

    • isReorderedMark

      protected boolean isReorderedMark(GlyphDefinitionTable gdef, int[] glyphs, int[] unscaledWidths, int index, int[] pa)