/*
Copyright 2007-2010 Stefano Chizzolini. http://www.pdfclown.org
Contributors:
* Stefano Chizzolini (original code developer, http://www.stefanochizzolini.it)
This file should be part of the source code distribution of "PDF Clown library"
(the Program): see the accompanying README files for more info.
This Program 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.
This Program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY,
either expressed or implied; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the License for more details.
You should have received a copy of the GNU Lesser General Public License along with this
Program (see README files); if not, go to the GNU website (http://www.gnu.org/licenses/).
Redistribution and use, with or without modification, are permitted provided that such
redistributions retain the above copyright notice, license and disclaimer, along with
this list of conditions.
*/
package org.pdfclown.documents.contents.objects;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.util.List;
import org.pdfclown.PDF;
import org.pdfclown.VersionEnum;
import org.pdfclown.bytes.IOutputStream;
import org.pdfclown.documents.contents.ContentScanner.GraphicsState;
import org.pdfclown.tokens.Encoding;
import org.pdfclown.tokens.Symbol;
/**
Local graphics state [PDF:1.6:4.3.1].
@author Stefano Chizzolini (http://www.stefanochizzolini.it)
@since 0.0.4
@version 0.1.0
*/
@PDF(VersionEnum.PDF10)
public final class LocalGraphicsState
extends ContainerObject
{
// <class>
// <static>
// <fields>
public static final String BeginOperator = SaveGraphicsState.Operator;
public static final String EndOperator = RestoreGraphicsState.Operator;
private static final byte[] BeginChunk = Encoding.encode(BeginOperator + Symbol.LineFeed);
private static final byte[] EndChunk = Encoding.encode(EndOperator + Symbol.LineFeed);
// </fields>
// </static>
// <dynamic>
// <constructors>
public LocalGraphicsState(
)
{super();}
public LocalGraphicsState(
List<ContentObject> objects
)
{super(objects);}
// </constructors>
// <interface>
// <public>
@Override
public void scan(
GraphicsState state
)
{
Graphics2D context = state.getScanner().getRenderContext();
if(context != null)
{
/*
NOTE: Local graphics state is purposely isolated from surrounding graphics state,
so no inner operation can alter its subsequent scanning.
*/
// Save outer graphics state!
Shape clip = context.getClip();
render(state);
// Restore outer graphics state!
context.setClip(clip);
context.setTransform(state.getCtm());
}
}
@Override
public void writeTo(
IOutputStream stream
)
{
stream.write(BeginChunk);
super.writeTo(stream);
stream.write(EndChunk);
}
// </public>
// </interface>
// </dynamic>
// </class>
}