001/* 002 * $Id: RegionTextRenderFilter.java 4784 2011-03-15 08:33:00Z blowagie $ 003 * 004 * This file is part of the iText (R) project. 005 * Copyright (c) 1998-2011 1T3XT BVBA 006 * Authors: Kevin Day, Bruno Lowagie, Paulo Soares, et al. 007 * 008 * This program is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Affero General Public License version 3 010 * as published by the Free Software Foundation with the addition of the 011 * following permission added to Section 15 as permitted in Section 7(a): 012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT, 013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. 014 * 015 * This program is distributed in the hope that it will be useful, but 016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 017 * or FITNESS FOR A PARTICULAR PURPOSE. 018 * See the GNU Affero General Public License for more details. 019 * You should have received a copy of the GNU Affero General Public License 020 * along with this program; if not, see http://www.gnu.org/licenses or write to 021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 022 * Boston, MA, 02110-1301 USA, or download the license from the following URL: 023 * http://itextpdf.com/terms-of-use/ 024 * 025 * The interactive user interfaces in modified source and object code versions 026 * of this program must display Appropriate Legal Notices, as required under 027 * Section 5 of the GNU Affero General Public License. 028 * 029 * In accordance with Section 7(b) of the GNU Affero General Public License, 030 * a covered work must retain the producer line in every PDF that is created 031 * or manipulated using iText. 032 * 033 * You can be released from the requirements of the license by purchasing 034 * a commercial license. Buying such a license is mandatory as soon as you 035 * develop commercial activities involving the iText software without 036 * disclosing the source code of your own applications. 037 * These activities include: offering paid services to customers as an ASP, 038 * serving PDFs on the fly in a web application, shipping iText with a closed 039 * source product. 040 * 041 * For more information, please contact iText Software Corp. at this 042 * address: sales@itextpdf.com 043 */ 044package com.itextpdf.text.pdf.parser; 045 046import java.awt.geom.Rectangle2D; 047 048 049/** 050 * A {@link RenderFilter} that only allows text within a specified rectangular region 051 * @since 5.0.1 052 */ 053public class RegionTextRenderFilter extends RenderFilter { 054 055 /** the region to allow text from */ 056 private final Rectangle2D filterRect; 057 058 /** 059 * Constructs a filter 060 * @param filterRect the rectangle to filter text against. Note that this is a java.awt.Rectangle ! 061 */ 062 public RegionTextRenderFilter(Rectangle2D filterRect) { 063 this.filterRect = filterRect; 064 } 065 066 /** 067 * @see com.itextpdf.text.pdf.parser.RenderFilter#allowText(com.itextpdf.text.pdf.parser.TextRenderInfo) 068 */ 069 public boolean allowText(TextRenderInfo renderInfo){ 070 LineSegment segment = renderInfo.getBaseline(); 071 Vector startPoint = segment.getStartPoint(); 072 Vector endPoint = segment.getEndPoint(); 073 074 float x1 = startPoint.get(Vector.I1); 075 float y1 = startPoint.get(Vector.I2); 076 float x2 = endPoint.get(Vector.I1); 077 float y2 = endPoint.get(Vector.I2); 078 079 return filterRect.intersectsLine(x1, y1, x2, y2); 080 } 081 082 083}