/*
Copyright 2008-2010 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.geom.Path2D;
import org.pdfclown.PDF;
import org.pdfclown.VersionEnum;
import org.pdfclown.documents.contents.ContentScanner;
import org.pdfclown.documents.contents.ContentScanner.GraphicsState;
import org.pdfclown.documents.contents.WindModeEnum;
/**
Clipping path operation [PDF:1.6:4.4.2].
@author Stefano Chizzolini (http://www.stefanochizzolini.it)
@since 0.0.7
@version 0.1.0
*/
@PDF(VersionEnum.PDF10)
public final class ModifyClipPath
extends Operation
{
// <class>
// <static>
// <fields>
public static final String EvenOddOperator = "W*";
public static final String NonZeroOperator = "W";
/**
'Modify the current clipping path by intersecting it with the current path,
using the even-odd rule to determine which regions lie inside the clipping path'
operation.
*/
public static final ModifyClipPath EvenOdd = new ModifyClipPath(EvenOddOperator, WindModeEnum.EvenOdd);
/**
'Modify the current clipping path by intersecting it with the current path,
using the nonzero winding number rule to determine which regions lie inside
the clipping path' operation.
*/
public static final ModifyClipPath NonZero = new ModifyClipPath(NonZeroOperator, WindModeEnum.NonZero);
// </fields>
// </static>
// <dynamic>
// <fields>
private WindModeEnum clipMode;
// </fields>
// <constructors>
private ModifyClipPath(
String operator,
WindModeEnum clipMode
)
{
super(operator);
this.clipMode = clipMode;
}
// </constructors>
// <interface>
// <public>
/**
Gets the clipping rule.
*/
public WindModeEnum getClipMode(
)
{return clipMode;}
@Override
public void scan(
GraphicsState state
)
{
ContentScanner scanner = state.getScanner();
Path2D pathObject = (Path2D)scanner.getRenderObject();
if(pathObject != null)
{
pathObject.setWindingRule(clipMode.toAwt());
scanner.getRenderContext().clip(pathObject);
}
}
// </public>
// </interface>
// </dynamic>
// </class>
}