/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. 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 <http://www.gnu.org/licenses/>.
*/
/*
* Contributors:
* Greg Hilton
*/
package net.sf.jasperreports.engine.export;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import net.sf.jasperreports.engine.JRPrintElement;
/**
* Utility class used by grid exporters to create a grid for page layout.
*
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: CutsInfo.java 3659 2010-03-31 10:20:49Z shertage $
*/
public class CutsInfo
{
public static final int USAGE_NOT_EMPTY = 1;
public static final int USAGE_SPANNED = 2;
public static final int USAGE_BREAK = 4;
private final List cuts = new ArrayList();
private int[] cutUsage;
public CutsInfo()
{
addCut(Integer.valueOf(0));
}
public CutsInfo(int lastCut)
{
this();
addCut(Integer.valueOf(lastCut));
}
public List getCuts()
{
return cuts;
}
public int size()
{
return cuts.size();
}
public void use()
{
if (cutUsage == null)
{
cutUsage = new int[cuts.size()];
}
}
public int getCut(int index)
{
return ((Integer)cuts.get(index)).intValue();
}
public void addXCuts(JRPrintElement element, int offset)
{
addCut(element.getX() + offset);
addCut(element.getX() + element.getWidth() + offset);
}
public void addYCuts(JRPrintElement element, int offset)
{
addCut(element.getY() + offset);
addCut(element.getY() + element.getHeight() + offset);
}
protected boolean addCut(int cut)
{
return addCut(Integer.valueOf(cut));
}
public void addUsage(int index, int usage)
{
cutUsage[index] |= usage;
}
private boolean addCut(Integer cut)
{
int idx = Collections.binarySearch(cuts, cut);
if (idx >= 0)
{
return false;
}
cuts.add(-idx - 1, cut);
return true;
}
public int indexOfCut(int cut)
{
return indexOfCut(Integer.valueOf(cut));
}
private int indexOfCut(Integer cut)
{
int idx = Collections.binarySearch(cuts, cut);
if (idx < 0)
{
idx = -1;
}
return idx;
}
/**
* Decides whether a cut is empty or not.
*
* @param index the cut index
* @return <code>true</code> if and only if the cut is not empty
*/
public boolean isCutNotEmpty(int index)
{
return ((cutUsage[index] & USAGE_NOT_EMPTY) > 0);
}
/**
* Decides whether a cut is occupied by spanning cells or not.
*
* @param index the cut index
* @return <code>true</code> if and only if the cut is not empty
*/
public boolean isCutSpanned(int index)
{
return ((cutUsage[index] & USAGE_SPANNED) > 0);
}
/**
*
*/
public boolean isBreak(int index)
{
return ((cutUsage[index] & USAGE_BREAK) > 0);
}
public boolean hasCuts()
{
return !cuts.isEmpty();
}
public int getFirstCut()
{
return getCut(0);
}
public int getLastCut()
{
return getCut(size() - 1);
}
public int getTotalLength()
{
return hasCuts() ? getLastCut() - getFirstCut() : 0;
}
}