Implemented this method that was missing from javax.swing.text.Utilities
and is needed for the implementation of WrappedPlainView that I'm
working on.
2005-10-25 Anthony Balkissoon <[EMAIL PROTECTED]>
* javax/swing/text/Utilities.java:
(getBreakLocation): New API method.
--Tony
Index: javax/swing/text/Utilities.java
===================================================================
RCS file: /cvsroot/classpath/classpath/javax/swing/text/Utilities.java,v
retrieving revision 1.14
diff -u -r1.14 Utilities.java
--- javax/swing/text/Utilities.java 6 Oct 2005 20:16:32 -0000 1.14
+++ javax/swing/text/Utilities.java 25 Oct 2005 17:34:22 -0000
@@ -486,4 +486,40 @@
}
}
}
+
+ /**
+ * Determine where to break the text in the given Segment, attempting to find
+ * a word boundary.
+ * @param s the Segment that holds the text
+ * @param metrics the font metrics used for calculating the break point
+ * @param x0 starting view location representing the start of the text
+ * @param x the target view location
+ * @param e the TabExpander used for expanding tabs (if this is null tabs
+ * are expanded to 1 space)
+ * @param startOffset the offset in the Document of the start of the text
+ * @return the offset at which we should break the text
+ */
+ public static final int getBreakLocation(Segment s, FontMetrics metrics,
+ int x0, int x, TabExpander e,
+ int startOffset)
+ {
+ int mark = Utilities.getTabbedTextOffset(s, metrics, x0, x, e, startOffset);
+ BreakIterator breaker = BreakIterator.getWordInstance();
+ breaker.setText(s.toString());
+
+ // If mark is equal to the end of the string, just use that position
+ if (mark == s.count)
+ return mark;
+
+ // Try to find a word boundary previous to the mark at which we
+ // can break the text
+ int preceding = breaker.preceding(mark + 1);
+
+ if (preceding != 0)
+ return preceding;
+ else
+ // If preceding is 0 we couldn't find a suitable word-boundary so
+ // just break it on the character boundary
+ return mark;
+ }
}
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