Java tutorial
/* * $Id: PdfTable.java 3373 2008-05-12 16:21:24Z xlv $ * * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie * * The contents of this file are subject to the Mozilla Public License Version 1.1 * (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the License. * * The Original Code is 'iText, a free JAVA-PDF library'. * * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. * All Rights Reserved. * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. * * Contributor(s): all the names of the contributors are added in the source code * where applicable. * * Alternatively, the contents of this file may be used under the terms of the * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the * provisions of LGPL are applicable instead of those above. If you wish to * allow use of your version of this file only under the terms of the LGPL * License and not to allow others to use your version of this file under * the MPL, indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by the LGPL. * If you do not delete the provisions above, a recipient may use your version * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. * * This library is free software; you can redistribute it and/or modify it * under the terms of the MPL as stated above or under the terms of the GNU * Library General Public License as published by the Free Software Foundation; * either version 2 of the License, or any later version. * * This library 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 Library general Public License for more * details. * * If you didn't download this code from the following link, you should check if * you aren't using an obsolete version: * http://www.lowagie.com/iText/ */ package com.lowagie.text.pdf; import java.util.ArrayList; import java.util.Iterator; import com.lowagie.text.Cell; import com.lowagie.text.Element; import com.lowagie.text.Rectangle; import com.lowagie.text.Row; import com.lowagie.text.Table; /** * <CODE>PdfTable</CODE> is an object that contains the graphics and text of a table. * * @see com.lowagie.text.Table * @see com.lowagie.text.Row * @see com.lowagie.text.Cell * @see PdfCell */ public class PdfTable extends Rectangle { // membervariables /** this is the number of columns in the table. */ private int columns; /** this is the ArrayList with all the cell of the table header. */ private ArrayList headercells; /** this is the ArrayList with all the cells in the table. */ private ArrayList cells; /** Original table used to build this object*/ protected Table table; /** Cached column widths. */ protected float[] positions; // constructors /** * Constructs a <CODE>PdfTable</CODE>-object. * * @param table a <CODE>Table</CODE> * @param left the left border on the page * @param right the right border on the page * @param top the start position of the top of the table * @since a parameter of this method has been removed in iText 2.0.8 */ PdfTable(Table table, float left, float right, float top) { // constructs a Rectangle (the bottom value will be changed afterwards) super(left, top, right, top); this.table = table; table.complete(); // copying the attributes from class Table cloneNonPositionParameters(table); this.columns = table.getColumns(); positions = table.getWidths(left, right - left); // initialization of some parameters setLeft(positions[0]); setRight(positions[positions.length - 1]); headercells = new ArrayList(); cells = new ArrayList(); updateRowAdditionsInternal(); } // methods /** * Updates the table row additions in the underlying table object and deletes all table rows, * in order to preserve memory and detect future row additions. * <p><b>Pre-requisite</b>: the object must have been built with the parameter <code>supportUpdateRowAdditions</code> equals to true. */ void updateRowAdditions() { table.complete(); updateRowAdditionsInternal(); table.deleteAllRows(); } /** * Updates the table row additions in the underlying table object */ private void updateRowAdditionsInternal() { // correct table : fill empty cells/ parse table in table Row row; int prevRows = rows(); int rowNumber = 0; int groupNumber = 0; boolean groupChange; int firstDataRow = table.getLastHeaderRow() + 1; Cell cell; PdfCell currentCell; ArrayList newCells = new ArrayList(); int rows = table.size() + 1; float[] offsets = new float[rows]; for (int i = 0; i < rows; i++) { offsets[i] = getBottom(); } // loop over all the rows for (Iterator rowIterator = table.iterator(); rowIterator.hasNext();) { groupChange = false; row = (Row) rowIterator.next(); if (row.isEmpty()) { if (rowNumber < rows - 1 && offsets[rowNumber + 1] > offsets[rowNumber]) offsets[rowNumber + 1] = offsets[rowNumber]; } else { for (int i = 0; i < row.getColumns(); i++) { cell = (Cell) row.getCell(i); if (cell != null) { currentCell = new PdfCell(cell, rowNumber + prevRows, positions[i], positions[i + cell.getColspan()], offsets[rowNumber], cellspacing(), cellpadding()); if (rowNumber < firstDataRow) { currentCell.setHeader(); headercells.add(currentCell); if (!table.isNotAddedYet()) continue; } try { if (offsets[rowNumber] - currentCell.getHeight() - cellpadding() < offsets[rowNumber + currentCell.rowspan()]) { offsets[rowNumber + currentCell.rowspan()] = offsets[rowNumber] - currentCell.getHeight() - cellpadding(); } } catch (ArrayIndexOutOfBoundsException aioobe) { if (offsets[rowNumber] - currentCell.getHeight() < offsets[rows - 1]) { offsets[rows - 1] = offsets[rowNumber] - currentCell.getHeight(); } } currentCell.setGroupNumber(groupNumber); groupChange |= cell.getGroupChange(); newCells.add(currentCell); } } } rowNumber++; if (groupChange) groupNumber++; } // loop over all the cells int n = newCells.size(); for (int i = 0; i < n; i++) { currentCell = (PdfCell) newCells.get(i); try { currentCell.setBottom(offsets[currentCell.rownumber() - prevRows + currentCell.rowspan()]); } catch (ArrayIndexOutOfBoundsException aioobe) { currentCell.setBottom(offsets[rows - 1]); } } cells.addAll(newCells); setBottom(offsets[rows - 1]); } /** * Get the number of rows */ int rows() { return cells.isEmpty() ? 0 : ((PdfCell) cells.get(cells.size() - 1)).rownumber() + 1; } /** @see com.lowagie.text.Element#type() */ public int type() { return Element.TABLE; } /** * Returns the arraylist with the cells of the table header. * * @return an <CODE>ArrayList</CODE> */ ArrayList getHeaderCells() { return headercells; } /** * Checks if there is a table header. * * @return an <CODE>ArrayList</CODE> */ boolean hasHeader() { return !headercells.isEmpty(); } /** * Returns the arraylist with the cells of the table. * * @return an <CODE>ArrayList</CODE> */ ArrayList getCells() { return cells; } /** * Returns the number of columns of the table. * * @return the number of columns */ int columns() { return columns; } /** * Returns the cellpadding of the table. * * @return the cellpadding */ final float cellpadding() { return table.getPadding(); } /** * Returns the cellspacing of the table. * * @return the cellspacing */ final float cellspacing() { return table.getSpacing(); } /** * Checks if this <CODE>Table</CODE> has to fit a page. * * @return true if the table may not be split */ public final boolean hasToFitPageTable() { return table.isTableFitsPage(); } /** * Checks if the cells of this <CODE>Table</CODE> have to fit a page. * * @return true if the cells may not be split */ public final boolean hasToFitPageCells() { return table.isCellsFitPage(); } /** * Gets the offset of this table. * * @return the space between this table and the previous element. */ public float getOffset() { return table.getOffset(); } }