ICU-400.38.tar.gz

[apple/icu.git] / icuSources / layout / ThaiLayoutEngine.h

diff --git a/icuSources/layout/ThaiLayoutEngine.h b/icuSources/layout/ThaiLayoutEngine.h
index aad7addfca9ead6945b974f388e3f082bcac4510..b0e1a52dd33667bd7063e190da8fa172cf3a19b7 100644 (file)
--- a/icuSources/layout/ThaiLayoutEngine.h
+++ b/icuSources/layout/ThaiLayoutEngine.h
@@ -1,7 +1,7 @@
 
 /*
  *
- * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
+ * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved
  *
  */
 
@@ -114,6 +114,28 @@ protected:
     virtual le_int32 computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft,
         LEGlyphStorage &glyphStorage, LEErrorCode &success);
 
+    /**
+     * This method does positioning adjustments like accent positioning and
+     * kerning. The default implementation does nothing. Subclasses needing
+     * position adjustments must override this method.
+     *
+     * Note that this method has both characters and glyphs as input so that
+     * it can use the character codes to determine glyph types if that information
+     * isn't directly available. (e.g. Some Arabic OpenType fonts don't have a GDEF
+     * table)
+     *
+     * @param chars - the input character context
+     * @param offset - the offset of the first character to process
+     * @param count - the number of characters to process
+     * @param reverse - <code>TRUE</code> if the glyphs in the glyph array have been reordered
+     * @param glyphStorage - the object which holds the per-glyph storage. The glyph positions will be
+     *                       adjusted as needed.
+     * @param success - output parameter set to an error code if the operation fails
+     *
+     * @internal
+     */
+    virtual void adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool reverse, LEGlyphStorage &glyphStorage, LEErrorCode &success);
+
 };
 
 U_NAMESPACE_END