/*
* $Id: TextMarginFinder.java 4784 2011-03-15 08:33:00Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2011 1T3XT BVBA
* Authors: Bruno Lowagie, 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 1T3XT,
* 1T3XT 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: [email protected]
*/
package com.itextpdf.text.pdf.parser;
import java.awt.geom.Rectangle2D;
/**
* Allows you to find the rectangle that contains all the text in a page.
* @since 5.0.2
*/
public class TextMarginFinder implements RenderListener {
private Rectangle2D.Float textRectangle = null;
/**
* Method invokes by the PdfContentStreamProcessor.
* Passes a TextRenderInfo for every text chunk that is encountered.
* We'll use this object to obtain coordinates.
* @see com.itextpdf.text.pdf.parser.RenderListener#renderText(com.itextpdf.text.pdf.parser.TextRenderInfo)
*/
public void renderText(TextRenderInfo renderInfo) {
if (textRectangle == null)
textRectangle = renderInfo.getDescentLine().getBoundingRectange();
else
textRectangle.add(renderInfo.getDescentLine().getBoundingRectange());
textRectangle.add(renderInfo.getAscentLine().getBoundingRectange());
}
/**
* Getter for the left margin.
* @return the X position of the left margin
*/
public float getLlx() {
return textRectangle.x;
}
/**
* Getter for the bottom margin.
* @return the Y position of the bottom margin
*/
public float getLly() {
return textRectangle.y;
}
/**
* Getter for the right margin.
* @return the X position of the right margin
*/
public float getUrx() {
return textRectangle.x + textRectangle.width;
}
/**
* Getter for the top margin.
* @return the Y position of the top margin
*/
public float getUry() {
return textRectangle.y + textRectangle.height;
}
/**
* Gets the width of the text block.
* @return a width
*/
public float getWidth() {
return textRectangle.width;
}
/**
* Gets the height of the text block.
* @return a height
*/
public float getHeight() {
return textRectangle.height;
}
/**
* @see com.itextpdf.text.pdf.parser.RenderListener#beginTextBlock()
*/
public void beginTextBlock() {
// do nothing
}
/**
* @see com.itextpdf.text.pdf.parser.RenderListener#endTextBlock()
*/
public void endTextBlock() {
// do nothing
}
/**
* @see com.itextpdf.text.pdf.parser.RenderListener#renderImage(com.itextpdf.text.pdf.parser.ImageRenderInfo)
*/
public void renderImage(ImageRenderInfo renderInfo) {
// do nothing
}
}
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