pdfpcell.java

处理PDF

/*
 * $Id: PdfPCell.java 3533 2008-07-07 21:27:13Z Howard_s $
 *
 * Copyright 2001, 2002 Paulo Soares
 *
 * 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.List;

import com.lowagie.text.Chunk;
import com.lowagie.text.Element;
import com.lowagie.text.Image;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.events.PdfPCellEventForwarder;

/** A cell in a PdfPTable.
 */

public class PdfPCell extends Rectangle{
    
    private ColumnText column = new ColumnText(null);
    
    /** Holds value of property verticalAlignment. */
    private int verticalAlignment = Element.ALIGN_TOP;
    
    /** Holds value of property paddingLeft. */
    private float paddingLeft = 2;
    
    /** Holds value of property paddingLeft. */
    private float paddingRight = 2;
    
    /** Holds value of property paddingTop. */
    private float paddingTop = 2;
    
    /** Holds value of property paddingBottom. */
    private float paddingBottom = 2;
    
    /** Holds value of property fixedHeight. */
    private float fixedHeight = 0;
    
    /** Holds value of property noWrap. */
    private boolean noWrap = false;
    
    /** Holds value of property table. */
    private PdfPTable table;
    
    /** Holds value of property minimumHeight. */
    private float minimumHeight;
    
    /** Holds value of property colspan. */
    private int colspan = 1;
    
    /** Holds value of property image. */
    private Image image;
    
    /** Holds value of property cellEvent. */
    private PdfPCellEvent cellEvent;

    /** Holds value of property useDescender. */
    private boolean useDescender;

    /** Increases padding to include border if true */
    private boolean useBorderPadding = false;


    /** The text in the cell. */
    protected Phrase phrase;

    /** Constructs an empty <CODE>PdfPCell</CODE>.
     * The default padding is 2.
     */
    public PdfPCell() {
        super(0, 0, 0, 0);
        borderWidth = 0.5f;
        border = BOX;
        column.setLeading(0, 1);
    }

    /** Constructs a <CODE>PdfPCell</CODE> with a <CODE>Phrase</CODE>.
     * The default padding is 2.
     * @param phrase the text
     */
    public PdfPCell(Phrase phrase) {
        super(0, 0, 0, 0);
        borderWidth = 0.5f;
        border = BOX;
        column.addText(this.phrase = phrase);
        column.setLeading(0, 1);
    }
    
    /** Constructs a <CODE>PdfPCell</CODE> with an <CODE>Image</CODE>.
     * The default padding is 0.
     * @param image the <CODE>Image</CODE>
     */
    public PdfPCell(Image image) {
        this(image, false);
    }
    
    /** Constructs a <CODE>PdfPCell</CODE> with an <CODE>Image</CODE>.
     * The default padding is 0.25 for a border width of 0.5.
     * @param image the <CODE>Image</CODE>
     * @param fit <CODE>true</CODE> to fit the image to the cell
     */
    public PdfPCell(Image image, boolean fit) {
        super(0, 0, 0, 0);
        if (fit) {
            borderWidth = 0.5f;
            border = BOX;
            this.image = image;
            column.setLeading(0, 1);
            setPadding(borderWidth / 2);
        }
        else {
            borderWidth = 0.5f;
            border = BOX;
            column.addText(this.phrase = new Phrase(new Chunk(image, 0, 0)));
            column.setLeading(0, 1);
            setPadding(0);
        }
    }
    
    /** Constructs a <CODE>PdfPCell</CODE> with a <CODE>PdfPtable</CODE>.
     * This constructor allows nested tables.
     * The default padding is 0.
     * @param table The <CODE>PdfPTable</CODE>
     */
    public PdfPCell(PdfPTable table) {
        this(table, null);
    }
    
    /** Constructs a <CODE>PdfPCell</CODE> with a <CODE>PdfPtable</CODE>.
     * This constructor allows nested tables.
     * 
     * @param table The <CODE>PdfPTable</CODE>
     * @param style	The style to apply to the cell (you could use getDefaultCell())
     * @since 2.1.0
     */
    public PdfPCell(PdfPTable table, PdfPCell style) {
        super(0, 0, 0, 0);
        borderWidth = 0.5f;
        border = BOX;
        column.setLeading(0, 1);
        this.table = table;
        table.setWidthPercentage(100);
        table.setExtendLastRow(true);
        column.addElement(table);
        if (style != null) {
        	cloneNonPositionParameters(style);
        	verticalAlignment = style.verticalAlignment;
        	paddingLeft = style.paddingLeft;
        	paddingRight = style.paddingRight;
        	paddingTop = style.paddingTop;
        	paddingBottom = style.paddingBottom;
        	colspan = style.colspan;
        	cellEvent = style.cellEvent;
        	useDescender = style.useDescender;
        	useBorderPadding = style.useBorderPadding;
        	rotation = style.rotation;
        }
        else {
        	setPadding(0);
        }
    }
    
    /** Constructs a deep copy of a <CODE>PdfPCell</CODE>.
     * @param cell the <CODE>PdfPCell</CODE> to duplicate
     */
    public PdfPCell(PdfPCell cell) {
        super(cell.llx, cell.lly, cell.urx, cell.ury);
        cloneNonPositionParameters(cell);
        verticalAlignment = cell.verticalAlignment;
        paddingLeft = cell.paddingLeft;
        paddingRight = cell.paddingRight;
        paddingTop = cell.paddingTop;
        paddingBottom = cell.paddingBottom;
        phrase = cell.phrase;
        fixedHeight = cell.fixedHeight;
        minimumHeight = cell.minimumHeight;
        noWrap = cell.noWrap;
        colspan = cell.colspan;
        if (cell.table != null)
            table = new PdfPTable(cell.table);
        image = Image.getInstance(cell.image);
        cellEvent = cell.cellEvent;
        useDescender = cell.useDescender;
        column = ColumnText.duplicate(cell.column);
        useBorderPadding = cell.useBorderPadding;
        rotation = cell.rotation;
    }
    
    /**
     * Adds an iText element to the cell.
     * @param element
     */
    public void addElement(Element element) {
        if (table != null) {
            table = null;
            column.setText(null);
        }
        column.addElement(element);
    }
    
    /** Gets the <CODE>Phrase</CODE> from this cell.
     * @return the <CODE>Phrase</CODE>
     */
    public Phrase getPhrase() {
        return phrase;
    }
    
    /** Sets the <CODE>Phrase</CODE> for this cell.
     * @param phrase the <CODE>Phrase</CODE>
     */
    public void setPhrase(Phrase phrase) {
        table = null;
        image = null;
        column.setText(this.phrase = phrase);
    }
    
    /** Gets the horizontal alignment for the cell.
     * @return the horizontal alignment for the cell
     */
    public int getHorizontalAlignment() {
        return column.getAlignment();
    }
    
    /** Sets the horizontal alignment for the cell. It could be
     * <CODE>Element.ALIGN_CENTER</CODE> for example.
     * @param horizontalAlignment The horizontal alignment
     */
    public void setHorizontalAlignment(int horizontalAlignment) {
        column.setAlignment(horizontalAlignment);
    }
    
    /** Gets the vertical alignment for the cell.
     * @return the vertical alignment for the cell
     */
    public int getVerticalAlignment() {
        return verticalAlignment;
    }
    
    /** Sets the vertical alignment for the cell. It could be
     * <CODE>Element.ALIGN_MIDDLE</CODE> for example.
     * @param verticalAlignment The vertical alignment
     */
    public void setVerticalAlignment(int verticalAlignment) {
        if (table != null)
            table.setExtendLastRow(verticalAlignment == Element.ALIGN_TOP);
        this.verticalAlignment = verticalAlignment;
    }
    
    /** Gets the effective left padding.  This will include
     *  the left border width if {@link #isUseBorderPadding()} is true.
     * @return effective value of property paddingLeft.
     */
    public float getEffectivePaddingLeft() {
        return paddingLeft + (isUseBorderPadding() ? (getBorderWidthLeft()/(isUseVariableBorders()?1f:2f)) : 0);
    }
    
    /**
     * @return Value of property paddingLeft.
     */
    public float getPaddingLeft() {
        return paddingLeft;
    }

    /**
     * Setter for property paddingLeft.
     * @param paddingLeft New value of property paddingLeft.
     */
    public void setPaddingLeft(float paddingLeft) {
        this.paddingLeft = paddingLeft;
    }
    
    /** Gets the effective right padding.  This will include
     *  the right border width if {@link #isUseBorderPadding()} is true.
     * @return effective value of property paddingRight.
     */
    public float getEffectivePaddingRight() {
        return paddingRight + (isUseBorderPadding() ? (getBorderWidthRight()/(isUseVariableBorders()?1f:2f)) : 0);
    }
    
    /**
     * Getter for property paddingRight.
     * @return Value of property paddingRight.
     */
    public float getPaddingRight() {
        return paddingRight;
    }

    /**
     * Setter for property paddingRight.
     * @param paddingRight New value of property paddingRight.
     */
    public void setPaddingRight(float paddingRight) {
        this.paddingRight = paddingRight;
    }
    
    /** Gets the effective top padding.  This will include
     *  the top border width if {@link #isUseBorderPadding()} is true.
     * @return effective value of property paddingTop.
     */
    public float getEffectivePaddingTop() {
        return paddingTop + (isUseBorderPadding() ? (getBorderWidthTop()/(isUseVariableBorders()?1f:2f)) : 0);
    }
    
    /**
     * Getter for property paddingTop.
     * @return Value of property paddingTop.
     */
    public float getPaddingTop() {
        return paddingTop;
    }

    /**
     * Setter for property paddingTop.
     * @param paddingTop New value of property paddingTop.
     */
    public void setPaddingTop(float paddingTop) {
        this.paddingTop = paddingTop;
    }
    
    /** Gets the effective bottom padding.  This will include
     *  the bottom border width if {@link #isUseBorderPadding()} is true.
     * @return effective value of property paddingBottom.
     */
    public float getEffectivePaddingBottom() {
        return paddingBottom + (isUseBorderPadding() ? (getBorderWidthBottom()/(isUseVariableBorders()?1f:2f)) : 0);
    }
    
    /**
     * Getter for property paddingBottom.
     * @return Value of property paddingBottom.
     */
    public float getPaddingBottom() {
        return paddingBottom;
    }

    /**
     * Setter for property paddingBottom.