/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox.util.operator.pagedrawer;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.util.List;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSNumber;
import org.apache.pdfbox.pdfviewer.PageDrawer;
import org.apache.pdfbox.util.PDFOperator;
import org.apache.pdfbox.util.operator.OperatorProcessor;
/**
* Implementation of content stream operator for page drawer.
*
* @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
*
*/
public class AppendRectangleToPath extends OperatorProcessor
{
/**
* process : re : append rectangle to path.
*
* @param operator The operator that is being executed.
* @param arguments List
*/
public void process(PDFOperator operator, List<COSBase> arguments)
{
PageDrawer drawer = (PageDrawer) context;
COSNumber x = (COSNumber) arguments.get(0);
COSNumber y = (COSNumber) arguments.get(1);
COSNumber w = (COSNumber) arguments.get(2);
COSNumber h = (COSNumber) arguments.get(3);
double x1 = x.doubleValue();
double y1 = y.doubleValue();
// create a pair of coordinates for the transformation
double x2 = w.doubleValue() + x1;
double y2 = h.doubleValue() + y1;
Point2D p0 = drawer.transformedPoint(x1, y1);
Point2D p1 = drawer.transformedPoint(x2, y1);
Point2D p2 = drawer.transformedPoint(x2, y2);
Point2D p3 = drawer.transformedPoint(x1, y2);
// to ensure that the path is created in the right direction, we have to create
// it by combining single lines instead of creating a simple rectangle
GeneralPath path = drawer.getLinePath();
path.moveTo((float) p0.getX(), (float) p0.getY());
path.lineTo((float) p1.getX(), (float) p1.getY());
path.lineTo((float) p2.getX(), (float) p2.getY());
path.lineTo((float) p3.getX(), (float) p3.getY());
// close the subpath instead of adding the last line so that a possible set line
// cap style isn't taken into account at the "beginning" of the rectangle
path.closePath();
}
}