/*
* $Id: 6a285f93bc4d5b7a4336efd74a7d9dc8d319d17c $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2015 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, Kevin Day, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text.pdf.parser;
import java.io.ByteArrayOutputStream;
import junit.framework.Assert;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.itextpdf.text.Document;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
/**
* @author kevin
*/
public class FilteredTextRenderListenerTest {
@Before
public void setUp() throws Exception {
}
@After
public void tearDown() throws Exception {
}
@Test
public void testRegion() throws Exception {
byte[] pdf = createPdfWithCornerText();
PdfReader reader = new PdfReader(pdf);
float pageHeight = reader.getPageSize(1).getHeight();
Rectangle upperLeft = new Rectangle(0, (int)pageHeight-30, 250, (int)pageHeight);
Assert.assertTrue(textIsInRectangle(reader, "Upper Left", upperLeft));
Assert.assertFalse(textIsInRectangle(reader, "Upper Right", upperLeft));
}
private boolean textIsInRectangle(PdfReader reader, String text, Rectangle rect) throws Exception{
FilteredTextRenderListener filterListener = new FilteredTextRenderListener(new LocationTextExtractionStrategy(), new RegionTextRenderFilter(rect) );
String extractedText = PdfTextExtractor.getTextFromPage(reader, 1, filterListener);
return extractedText.equals(text);
}
private byte[] createPdfWithCornerText() throws Exception{
final ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
final Document document = new Document(PageSize.LETTER);
PdfWriter writer = PdfWriter.getInstance(document, byteStream);
document.open();
PdfContentByte canvas = writer.getDirectContent();
canvas.beginText();
canvas.setFontAndSize(BaseFont.createFont(), 12);
canvas.showTextAligned(PdfContentByte.ALIGN_LEFT, "Upper Left", 10, document.getPageSize().getHeight() - 10 - 12, 0);
canvas.showTextAligned(PdfContentByte.ALIGN_RIGHT, "Upper Right", document.getPageSize().getWidth() - 10, document.getPageSize().getHeight() - 10 - 12, 0);
canvas.showTextAligned(PdfContentByte.ALIGN_LEFT, "Lower Left", 10, 10, 0);
canvas.showTextAligned(PdfContentByte.ALIGN_RIGHT, "Lower Right", document.getPageSize().getWidth() - 10, 10, 0);
canvas.endText();
document.close();
final byte[] pdfBytes = byteStream.toByteArray();
return pdfBytes;
}
}