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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2023 Cloud Software Group, Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.engine.util.text;
import java.awt.Font;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import net.sf.jasperreports.engine.JRRuntimeException;
/**
* Complex text layout check that uses Java 9 {@link Font}.
*
* @author Lucian Chirita ([email protected])
*/
public class FontTextLayoutAssessor implements TextLayoutAssessor
{
private static final Log log = LogFactory.getLog(FontTextLayoutAssessor.class);
private final Method fontLayoutMethod;
public FontTextLayoutAssessor()
{
Method method;
try
{
method = Font.class.getMethod("textRequiresLayout", char[].class, int.class, int.class);
}
catch (NoSuchMethodException e)
{
if (log.isDebugEnabled())
{
log.debug("java.awt.Font.textRequiresLayout method not found: " + e.getMessage());
}
method = null;
}
fontLayoutMethod = method;
}
public boolean available()
{
return fontLayoutMethod != null;
}
@Override
public boolean hasComplexLayout(char[] chars)
{
try
{
return (boolean) fontLayoutMethod.invoke(null, chars, 0, chars.length);
}
catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e)
{
throw new JRRuntimeException(e);
}
}
}