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/**
* ===========================================
* LibLayout : a free Java layouting library
* ===========================================
*
* Project Info: http://reporting.pentaho.org/liblayout/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: SpacerRenderNode.java 2739 2007-04-02 11:41:22Z taqua $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.layouting.renderer.model;
/**
* A spacer reserves space for whitespaces found in the text. When encountered
* at the beginning or end of lines, it gets removed.
* <p/>
* Spacers are always considered discardable, so when encountered alone, they
* will get pruned.
*
* @author Thomas Morgner
*/
public class SpacerRenderNode extends RenderNode
{
private boolean empty;
private boolean preserve;
public SpacerRenderNode()
{
this(0,0,false);
}
public SpacerRenderNode(final long width,
final long height,
final boolean preserve)
{
this.preserve = preserve;
setMaximumBoxWidth(width);
setMinimumChunkWidth(0);
setIcmMetricsFinished(true);
empty = width == 0 && height == 0;
}
public boolean isEmpty()
{
return empty;
}
public boolean isDiscardable()
{
return preserve == false;
}
/**
* If that method returns true, the element will not be used for rendering.
* For the purpose of computing sizes or performing the layouting (in the
* validate() step), this element will treated as if it is not there.
* <p/>
* If the element reports itself as non-empty, however, it will affect the
* margin computation.
*
* @return
*/
public boolean isIgnorableForRendering()
{
return true;
}
}
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