Java tutorial
/** * Product: Posterita Web-Based POS and Adempiere Plugin * Copyright (C) 2007 Posterita Ltd * This file is part of POSterita * * POSterita is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 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; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * Created on Feb 24, 2006 by praveen * */ package org.posterita.core; import java.awt.Color; import java.util.Iterator; import org.posterita.exceptions.OperationException; import com.lowagie.text.Chunk; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.Element; import com.lowagie.text.Image; import com.lowagie.text.Paragraph; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.PdfPCell; import com.lowagie.text.pdf.PdfPTable; public class CrossTabReportGenerator extends PDFReportGenerator { protected void writeDocument(Document document) throws OperationException { try { int noOfRows = dataSource.size(); String longestText = ""; int columnCount = 0; Object[] obj = null; Object[] header = (Object[]) dataSource.get(0); columnCount = header.length; PdfPTable table = new PdfPTable(columnCount); table.setWidthPercentage(100); table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); table.getDefaultCell().setVerticalAlignment(Element.ALIGN_MIDDLE); table.getDefaultCell().setPaddingBottom(5); table.getDefaultCell().setPaddingTop(5); //adding the headers for (int i = 0; i < columnCount; i++) { if (i == 0) { longestText = header[i].toString(); table.addCell(new Paragraph(header[i].toString())); } else { Image img = getTextAsImage(header[i].toString()); img.setRotationDegrees(90); img.setAlignment(Image.ALIGN_BOTTOM); PdfPCell cell = new PdfPCell(img); cell.setPadding(4); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setVerticalAlignment(Element.ALIGN_BOTTOM); //cell.setBackgroundColor(new Color(0, 0, 255)); table.addCell(cell); } } //adding the data for (int j = 1; j < noOfRows; j++) { obj = (Object[]) dataSource.get(j); for (int k = 0; k < columnCount; k++) { if (k == 0) { String text = obj[0].toString(); if (new Chunk(text, HEADER_FONT).getWidthPoint() > new Chunk(longestText, HEADER_FONT) .getWidthPoint()) { longestText = text; } Chunk txtck = new Chunk(obj[0].toString(), HEADER_FONT); PdfPCell cell = new PdfPCell(new Paragraph(txtck)); if (j == noOfRows - 1) { cell.setBackgroundColor(new Color(170, 170, 170)); } cell.setHorizontalAlignment(Element.ALIGN_LEFT); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setPaddingBottom(5); cell.setPaddingTop(5); cell.setPaddingLeft(5); table.addCell(cell); } else { Chunk txtck = new Chunk(obj[k].toString(), DATA_FONT); if (k == columnCount - 1) { PdfPCell cell = new PdfPCell(new Paragraph(txtck)); cell.setBackgroundColor(new Color(170, 170, 170)); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setPaddingBottom(5); cell.setPaddingTop(5); table.addCell(cell); } else { PdfPCell cell = new PdfPCell(new Paragraph(txtck)); cell.setHorizontalAlignment(Element.ALIGN_CENTER); cell.setVerticalAlignment(Element.ALIGN_MIDDLE); cell.setPaddingBottom(5); cell.setPaddingTop(5); if (j == noOfRows - 1) { cell.setBackgroundColor(new Color(170, 170, 170)); } table.addCell(cell); } } } } //setting table width Chunk dataChk = new Chunk("9999", DATA_FONT); Chunk headerChk = new Chunk(longestText, HEADER_FONT); float dataChkLength = dataChk.getWidthPoint() + 2 * CELLPADDING; float headerChkLength = headerChk.getWidthPoint() + 2 * CELLPADDING; float tableWidth = headerChkLength + dataChkLength * columnCount; float actualTableWidth = document.getPageSize().getWidth() - 2 * MARGIN; float columnWidth = dataChkLength; if (tableWidth < actualTableWidth) { columnWidth = (actualTableWidth - headerChkLength) / (columnCount - 1); } float[] widths = new float[columnCount]; widths[0] = headerChkLength + 2 * CELLPADDING; for (int i = 1; i < columnCount; i++) { widths[i] = columnWidth; } table.setWidths(widths); //writing the table document.add(table); } catch (DocumentException e) { throw new OperationException(e); } } protected Rectangle getDocumentDimension() { Document document = new Document(PAGE_SIZE, MARGIN, MARGIN, MARGIN, MARGIN); String longestText = ""; int columnCount = 0; Object[] obj = null; //Getting column count obj = (Object[]) dataSource.get(0); columnCount = obj.length; //Getting longest text Iterator iter = dataSource.iterator(); while (iter.hasNext()) { obj = (Object[]) iter.next(); String header = obj[0].toString(); if (header.length() > longestText.length()) { longestText = header; } } //setting the table width Chunk dataChk = new Chunk("9999", DATA_FONT); Chunk headerChk = new Chunk(longestText, HEADER_FONT); float dataChkLength = dataChk.getWidthPoint() + 2 * CELLPADDING; float headerChkLength = headerChk.getWidthPoint() + 2 * CELLPADDING; float tableWidth = headerChkLength + dataChkLength * columnCount; float actualTableWidth = document.getPageSize().getWidth() - 2 * MARGIN; //float actualTableHeight = document.getPageSize().height() - 2*MARGIN; //if the table size is greater than that of the page we should //scale the page if (tableWidth > actualTableWidth) { float documentWidth = document.getPageSize().getWidth(); float documentHeight = document.getPageSize().getHeight(); float newDocumentWidth = tableWidth + 2 * MARGIN; float newDocumentHeight = (documentHeight * newDocumentWidth) / documentWidth; return new Rectangle(newDocumentWidth, newDocumentHeight); } return document.getPageSize(); } }