/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.layout.process.text;
import java.awt.font.FontRenderContext;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextLayout;
import java.text.AttributedCharacterIterator;
import java.text.BreakIterator;
import org.pentaho.reporting.engine.classic.core.layout.model.ParagraphRenderBox;
public class WordBreakingLineIterator extends LineBreakIterator
{
private static final float INFINITY = 10000000f;
private final BreakIterator wordInstance;
public WordBreakingLineIterator(final ParagraphRenderBox box,
final FontRenderContext fontRenderContext,
final AttributedCharacterIterator ci,
final String text)
{
super(box, fontRenderContext, ci);
wordInstance = BreakIterator.getWordInstance();
wordInstance.setText(text);
}
protected TextLayout postProcess(final int start,
final TextLayout textLayout,
final LineBreakMeasurer lineBreakMeasurer)
{
int end = lineBreakMeasurer.getPosition();
final TextLayout layout = performWordBreak(start, textLayout, lineBreakMeasurer, end);
return super.postProcess(start, layout, lineBreakMeasurer);
}
private TextLayout performWordBreak(final int start,
final TextLayout textLayout,
final LineBreakMeasurer lineBreakMeasurer, final int end)
{
final TextLayout layout;
if (wordInstance.isBoundary(end) != false)
{
return textLayout;
}
int preceding = wordInstance.preceding(end);
if (preceding == start)
{
// single word does not fit on the line, so print full word
lineBreakMeasurer.setPosition(start);
return lineBreakMeasurer.nextLayout(INFINITY, wordInstance.following(end), false);
}
else
{
lineBreakMeasurer.setPosition(start);
return lineBreakMeasurer.nextLayout(INFINITY, preceding, false);
}
}
}