Package org.apache.fontbox.ttf.gsub

Class GsubWorkerForDflt

java.lang.Object
org.apache.fontbox.ttf.gsub.GsubWorkerForDflt
All Implemented Interfaces:
GsubWorker
public class GsubWorkerForDflt extends Object implements GsubWorker
DFLT (Default) script-specific implementation of GSUB system.

According to the OpenType specification, a Script table with the script tag 'DFLT' (default) is used in fonts to define features that are not script-specific. Applications should use the DFLT script table when no script table exists for the specific script of the text being processed, or when text lacks a defined script (containing only symbols or punctuation).

This implementation applies common, script-neutral typographic features that work across writing systems. The feature order follows standard OpenType recommendations for universal glyph substitutions.

Reference: OpenType ScriptList Table Specification

  • Method Details

    • applyTransforms

      public List<Integer> applyTransforms(List<Integer> originalGlyphIds)
      Description copied from interface: GsubWorker
      Applies language-specific transforms including GSUB and any other pre or post-processing necessary for displaying Glyphs correctly.
      Specified by:
      applyTransforms in interface GsubWorker
      Parameters:
      originalGlyphIds - list of original glyph IDs
      Returns:
      list of transformed glyph IDs